JP7610258B2 - Turret, tool holder installation method and tool holder - Google Patents

Description

The present invention relates to a technology that enables a tool holder to be attached with high precision to the tool holder mounting surface of a turret.

2. Description of the Related Art In machine tools such as lathes, a tool rest to which a tool holder for holding a tool can be attached is used. A tool rest is disclosed in, for example, Patent Document 1 (JP 2006-167862 A).
The tool rest disclosed in Patent Document 1 includes a turret, a drive mechanism, and an indexing mechanism. The turret is rotatable around a rotation center line, and a plurality of tool holder mounting surfaces are provided along the circumferential direction on the outer periphery. Tool holders are detachably mounted on the tool holder mounting surfaces of the turret. Tools are held in the tool holders. The indexing mechanism sequentially indexes the tool holders, which hold the tools used to machine a workpiece, to machining positions. The drive mechanism rotates the tools held in the tool holders indexed to the machining positions, thereby machining the workpiece.
Here, if the tool holder is not accurately attached to the tool holder mounting surface of the turret, machining accuracy will decrease. For this reason, the turret disclosed in Patent Document 1 is equipped with a positioning mechanism that positions the tool holder on the tool holder mounting surface of the turret. The positioning mechanism is composed of a key formed on the tool holder mounting surface of the turret and a key groove formed on the mounting surface of the tool holder with which the key can engage.

JP 2006-167862 A

The turret disclosed in Patent Document 1 is provided with a positioning mechanism that is configured with a key and a key groove into which the key can engage, and that positions the tool holder on the tool holder mounting surface. However, even if such a positioning mechanism is used, there are cases where the tool holder cannot be accurately mounted on the tool holder mounting surface. For example, there are cases where the center line of the tool held in the tool holder is misaligned or tilted.
The present invention has been made in view of the above circumstances, and has an object to provide a technique that enables a tool holder to be attached with high accuracy to a tool holder attachment surface of a turret.

The first invention relates to a turret. The turret is rotatable about a rotation center line, and has a plurality of tool holder mounting surfaces extending along the axial direction and the circumferential direction formed on the outer periphery. Preferably, the turret is formed in a polygon having the tool holder mounting surfaces as side surfaces.
The turret of the present invention includes a first member and a second member attached to a first tool holder mounting surface and a third tool holder mounting surface formed on one circumferential side and the other circumferential side among three circumferentially adjacent tool holder mounting surfaces, and a tool holder attached to a second tool holder mounting surface formed in the circumferential center. That is, the tool holder is attached to the second tool holder mounting surface with the first member and the second member attached to the first tool holder mounting surface and the third tool holder mounting surface. The tool holder is attached to the second tool holder mounting surface by a mounting means. As the mounting means, any suitable mounting means can be used. As the mounting means for mounting the first member and the second member to the first tool holder mounting surface and the third tool holder mounting surface, the same mounting means as the mounting means for mounting the tool holder to the second tool holder mounting surface may be used, or a different mounting means may be used. As the first member and the second member, a tool holder (a tool holder different from the tool holder attached to the second tool holder attachment surface) or a dummy tool holder is used.
Also included is a first wedge member, a second wedge member and an adjustment means.
The tool holder mounted on the second tool holder mounting surface and the first and second members mounted on the first and third tool holder mounting surfaces are configured so that the distance between the first wall surface on one circumferential side of the tool holder and the wall surface on the other circumferential side of the first member and the distance between the second wall surface on the other circumferential side of the tool holder and the wall surface on one circumferential side of the second member decrease from the radially outer peripheral side toward the radially inner peripheral side.
The first wedge member is disposed between the tool holder and the first member, with a first wall surface on one circumferential side of the first wedge member and a second wall surface on the other circumferential side in contact with a wall surface on the other circumferential side of the first member and a first wall surface of the tool holder. Preferably, the first wedge member is movable along the radial direction with the first wall surface on one circumferential side and the second wall surface on the other circumferential side in contact with a wall surface on the other circumferential side of the first member and a first wall surface of the tool holder, and is disposed such that a distance between the first wall surface of the tool holder and the wall surface on the other circumferential side of the first member increases as the first wedge member moves from the radially outer peripheral side to the radially inner peripheral side.
The second wedge member is disposed between the tool holder and the second member with a first wall surface on one circumferential side and a second wall surface on the other circumferential side of the second wedge member in contact with the second wall surface of the tool holder and the wall surface on the one circumferential side of the second member. Preferably, the second wedge member is movable along the radial direction with the first wall surface on the one circumferential side and the second wall surface on the other circumferential side in contact with the second wall surface of the tool holder and the wall surface on the one circumferential side of the second member, and is disposed such that the interval between the second wall surface of the tool holder and the wall surface on the one circumferential side of the second member increases as the second wedge member moves from the radially outer peripheral side to the radially inner peripheral side.
The adjustment means is configured to generate a force on at least one location on the second wall surface of the first wedge member that moves the tool holder in a direction away from the first member, and to generate a force on at least one location on the first wall surface of the second wedge member that moves the tool holder in a direction away from the second member. The at least one location on the second wall surface of the first wedge member and the at least one location on the second wall surface of the second wedge member can be set to any appropriate location .
The mounting state of the tool holder relative to the second tool holder mounting surface can be adjusted by adjusting at least one of the force generated at at least one location on the second wall surface of the first wedge member and the force generated at at least one location on the first wall surface of the second wedge member. For example, the tool centerline of a tool held in the tool holder can be moved parallel to the extension direction of the second tool holder mounting surface, or the tool centerline can be rotated on the second tool holder mounting surface.
By using the turret of the present invention, the tool holder can be attached to the tool holder attachment surface of the turret with high accuracy.
In a different embodiment of the first invention, the adjustment means is configured to generate forces at a plurality of axially spaced locations on the second wall surface of the first wedge member to move the tool holder in a direction away from the first member, and to generate forces at a plurality of axially spaced locations on the first wall surface of the second wedge member to move the tool holder in a direction away from the second member.
The plurality of axially spaced apart locations on the second wall surface of the first wedge member may be set at any suitable locations , but are preferably set to be located on both sides of the axial center of the second wall surface of the first wedge member. The plurality of axially spaced apart locations on the first wall surface of the second wedge member are set in a similar manner.
In this embodiment, the mounting state of the tool holder relative to the tool holder mounting surface can be adjusted with higher accuracy.
In another embodiment of the first invention, the first wedge member is composed of a plurality of split wedge members. The plurality of split wedge members constituting the first wedge member are arranged between the tool holder and the first member at a distance in the axial direction (including a state of contact), with a first wall surface on one circumferential side of each split wedge member and a second wall surface on the other circumferential side contacting a wall surface on the other circumferential side of the first member and a first wall surface of the tool holder. Preferably, each split wedge member is arranged movably along the radial direction with a first wall surface on one circumferential side and a second wall surface on the other circumferential side contacting a wall surface on the other circumferential side of the first member and a first wall surface of the tool holder.
The second wedge member is composed of a plurality of split wedge members. The split wedge members constituting the second wedge member are arranged between the tool holder and the second member at a distance (including a state of contact), with a first wall surface on one circumferential side of each split wedge member and a second wall surface on the other circumferential side in contact with the second wall surface of the tool holder and the wall surface on the one circumferential side of the second member. Preferably, each split wedge member is arranged to be movable along the radial direction with the first wall surface on one circumferential side and the second wall surface on the other circumferential side in contact with the second wall surface of the tool holder and the wall surface on the one circumferential side of the second member.
The adjustment means is configured to generate a force on at least one location on the second wall surface of each of the plurality of split wedge members constituting the first wedge member to move the tool holder in a direction away from the first member, and to generate a force on at least one location on the first wall surface of each of the plurality of split wedge members constituting the second wedge member to move the tool holder in a direction away from the second member. In this embodiment, since the first wedge member and the second wedge member are formed of a plurality of split wedge members arranged spaced apart in the axial direction, the mounting state of the tool holder with respect to the tool holder mounting surface can be more easily adjusted.
In another embodiment of the first aspect of the present invention, the mounting means has a mounting hole having a female thread and a mounting bolt having a male thread that can be screwed into the female thread formed in the mounting hole, and the adjustment means has an adjustment hole having a female thread and an adjustment bolt having a male thread that can be screwed into the female thread formed in the adjustment hole.
The male threads formed on the mounting bolt, the female threads formed on the mounting hole, and the male threads formed on the adjustment bolt, and the female threads formed on the adjustment hole have a tolerance that allows adjustment of the mounting state of the tool holder relative to the second tool holder mounting surface. For example, with the tool holder temporarily mounted to the tool holder mounting surface by the mounting bolt, the mounting state of the tool holder relative to the tool holder mounting surface can be adjusted by adjusting the position of the adjustment bolt.
In this embodiment, the mounting means and the adjustment means can be constructed simply.
In a different embodiment of the first invention, the adjustment means has an adjustment hole having a female thread formed therein, and an adjustment bolt having a male thread that can be screwed into the female thread formed in the adjustment hole.
The arrangement positions of the adjustment holes and the insertion positions of the adjustment bolts can be set appropriately.
For example, the adjustment hole includes a circumferential one-side adjustment hole formed in the tool holder and opening into a first wall surface of the tool holder, a circumferential other-side adjustment hole formed in the tool holder and opening into a second wall surface of the tool holder, an adjustment hole formed in the first wedge member and opening into a second wall surface of the first wedge member, and an adjustment hole formed in the second wedge member and opening into a first wall surface of the second wedge member. The adjustment bolt includes an adjustment bolt inserted into the adjustment hole opening into the second wall surface of the first wedge member and the circumferential one-side adjustment hole opening into the first wall surface of the tool holder, and an adjustment bolt inserted into the adjustment hole opening into the first wall surface of the second wedge member and the circumferential other-side adjustment hole opening into the second wall surface of the tool holder.
Alternatively, the adjustment hole includes an adjustment hole formed in the first member and opening into a wall surface on the other circumferential side of the first member, an adjustment hole formed in the second member and opening into a wall surface on one circumferential side of the second member, an adjustment hole formed in the first wedge member and opening into a first wall surface of the first wedge member, and an adjustment hole formed in the second wedge member and opening into a second wall surface of the second wedge member. The adjustment bolt includes an adjustment bolt inserted into the adjustment hole opening into the first wall surface of the first wedge member and the adjustment hole opening into the wall surface on the other circumferential side of the first member, and an adjustment hole opening into the second wall surface of the second wedge member and the adjustment bolt opening into the wall surface on one circumferential side of the second member.
In this embodiment, the adjustment means can be configured simply.
In a different embodiment of the first aspect of the present invention, at least one of the first member and the third member is a dummy of a tool holder.
In this embodiment, the mounting state of the tool holder with respect to the tool holder mounting surface can be adjusted inexpensively. As the dummy tool holder, for example, a member that does not have a tool holding portion that detachably holds a tool, or a member in which a tool holding portion does not hold a tool, etc., can be used.
The second invention relates to a tool holder mounting method for mounting a tool holder on a tool holder mounting surface of a turret.
The present invention has the following first to third steps.
(First stage)
Among three circumferentially adjacent tool holder mounting surfaces, a first member is mounted to a first tool holder mounting surface formed on one circumferential side, a second member is mounted to a third tool holder mounting surface formed on the other circumferential side, and a tool holder is temporarily mounted by a mounting means to the second tool holder mounting surface formed in the circumferential center. A first wedge member is disposed between the tool holder and the first member with a first wall surface on one circumferential side and a second wall surface on the other circumferential side of the first wedge member in contact with a wall surface on the other circumferential side of the first member and a first wall surface on the one circumferential side of the tool holder, and a second wedge member is disposed between the tool holder and the second member with a first wall surface on one circumferential side and a second wall surface on the other circumferential side of the second wedge member in contact with a second wall surface on the other circumferential side of the tool holder and a wall surface on the one circumferential side of the second member.
(Second stage)
The mounting condition of the tool holder relative to the second tool holder mounting surface is adjusted by performing at least one of the following operations: generating a force on at least one location on the second wall surface of the first wedge member that moves the tool holder in a direction away from the first member; and generating a force on at least one location on the first wall surface of the second wedge member that moves the tool holder in a direction away from the second member.
(Third stage)
The tool holder is mounted (secured) to the second tool holder mounting surface by a mounting means.
The term "temporarily attached" means that the tool holder is attached to the second tool holder mounting surface so that the mounting state of the tool holder can be adjusted relative to the second tool holder mounting surface by performing at least one of an operation of generating a force at at least one location on the second wall surface of the first wedge member and an operation of generating a force at at least one location on the second wall surface of the second wedge member.
The manner of adjusting the mounting state of the tool holder with respect to the second tool holder mounting surface includes, for example, a manner in which the tool holder is translated along the extension direction of the second tool holder mounting surface so as to eliminate misalignment of the tool centerline of the tool held in the tool holder, and a manner in which the tool holder is rotated on the second tool holder mounting surface so as to eliminate inclination of the tool centerline.
By using the tool holder mounting method of the present invention, the tool holder can be mounted with high precision on the tool holder mounting surface of the turret.
The third invention relates to a tool holder that is attached to the tool holder mounting surface of the turret.
The turret is rotatable about a rotation centerline and has a plurality of tool holder mounting surfaces formed along a circumferential direction on an outer periphery thereof. The tool holder of the present invention is mounted on one of the plurality of tool holder mounting surfaces. The tool holder mounting surface is preferably formed so as to extend along an axial direction and a circumferential direction.
The tool holder of the present invention has a mounting surface, a first wall surface, a second wall surface, a mounting hole, and an adjustment hole.
The mounting surface is disposed opposite one of the tool holder mounting surfaces and is preferably formed to extend along an axial direction and a circumferential direction.
The first wall surface and the second wall surface are formed on one circumferential side and the other circumferential side of the mounting surface, respectively, and are formed to extend along the axial and radial directions.
The mounting hole is formed so that a mounting bolt can be screwed into the mounting surface, pressing the mounting surface against one of the tool holder mounting surfaces of the turret. Preferably, the mounting bolt is configured so that it can be inserted into the mounting hole formed in the tool holder and the mounting hole formed in the turret and opening into one of the tool holder mounting surfaces . At least one mounting hole is formed.
The adjustment hole has a circumferential one side adjustment hole and a circumferential other side adjustment hole.
The one-side circumferential adjustment hole opens into the first wall surface and is formed so that an adjustment bolt can be screwed therethrough for adjusting the position of the first wedge member disposed between the first wall surface of the tool holder and the other-side circumferential wall surface of the first member attached to a tool holder mounting surface formed on one circumferential side of one of the multiple tool holder mounting surfaces. Preferably, the adjustment bolt is configured so that it can be inserted into the one-side circumferential adjustment hole formed in the tool holder and an adjustment hole formed in the first member and opening into the wall surface on the other circumferential side of the first member. At least one one-side circumferential adjustment hole is formed.
The other circumferential side adjustment hole opens into the second wall surface and is formed so that an adjustment bolt can be screwed into the other circumferential side adjustment hole formed in the tool holder and the second wall surface of the tool holder to adjust the position of the second wedge member disposed between the wall surface on one circumferential side of the second member attached to a tool holder mounting surface formed on the other circumferential side of one of the multiple tool holder mounting surfaces and the second wall surface of the tool holder. Preferably, the adjustment bolt is configured so that it can be inserted into the other circumferential side adjustment hole formed in the tool holder and the adjustment hole formed in the second member and opening into the wall surface on the one circumferential side of the second member. At least one other circumferential side adjustment hole is formed.
By using the tool holder of the present invention, the tool holder can be attached with high precision to the tool holder attachment surface of the turret.

By using the turret, tool holder mounting method, and tool holder of the present invention, the tool holder can be mounted with high precision on the tool holder mounting surface of the turret.

FIG. 1 is a diagram showing a first embodiment of a turret of the present invention. FIG. 2 is a view of FIG. 1 as seen in the direction of arrow II. 3 is a cross-sectional view taken along the line III-III of FIG. 2. 4 is a cross-sectional view taken along the line IV-IV of FIG. 2. 13A to 13C are diagrams illustrating an operation for adjusting a deviation of a tool center line. 13A to 13C are diagrams illustrating an operation for adjusting the inclination of a tool center line. FIG. 4 is a diagram showing a second embodiment of the turret of the present invention. FIG. 13 is a diagram showing a third embodiment of the turret of the present invention.

Hereinafter, an embodiment of the present invention will be described.
In this specification, the direction in which the rotation center line P extends (the front-rear direction of the paper in FIG. 1, and the left-right direction in FIG. 2) is referred to as the "axial direction". In addition, when viewed from one side in the direction in which the rotation center line P extends (see FIG. 2), the direction of the line passing through the rotation center line P is referred to as the "radial direction", the side of the rotation center line P along the radial direction is referred to as the "inner peripheral side" or "radially inner peripheral side", and the side opposite the rotation center line P along the radial direction is referred to as the "outer peripheral side" or "radially outer peripheral side". In addition, the direction along the circle centered on the rotation center line P is referred to as the "circumferential direction", and one side and the other side along the circumferential direction are referred to as the "one circumferential side" and the "other circumferential side". In the following embodiment, in FIG. 1, the counterclockwise direction centered on the rotation center line P is referred to as the "one circumferential side", and the clockwise direction is referred to as the "other circumferential side". Of course, the opposite direction may be used.
It should be noted that with respect to the tool holder and the wedge member, the terms "axial direction", "circumferential direction" and "radial direction" refer to the "axial direction", "circumferential direction" and "radial direction" in a state in which the tool holder and the wedge member are attached to the turret.

A first embodiment of a turret according to the present invention will be described with reference to FIGS.
Fig. 1 is a front view of a turret 110 according to the first embodiment, and Fig. 2 is a view taken from the direction of an arrow II in Fig. 1. Fig. 3 is a cross-sectional view taken from the direction of an arrow III-III in Fig. 2, and Fig. 4 is a cross-sectional view taken from the direction of an arrow IV-IV in Fig. 2.

The turret 110 is configured to be rotatable about a rotation center line P. The turret 110 is formed into a polygonal prism having a cross section perpendicular to the axial direction that is a polygon. In this embodiment, the turret 110 is formed into an octagonal prism. Note that the shape of the turret 110 is not limited to a polygonal prism.
A tool holder mounting surface on which a tool holder is attached is formed on the outer periphery of the turret 110. In this embodiment, a plurality of tool holder mounting surfaces extending in the axial and circumferential directions are formed along the circumferential direction on the outer periphery of the turret 110. In other words, the tool holder mounting surfaces are formed on the side surfaces of a polygonal prism. Note that only the tool holder mounting surfaces denoted by reference numerals 111a to 111c are shown in FIG. 1.

Tool holders are detachably attached to the tool holder attachment surfaces 111a to 111c. Note that only the tool holders 10, 20, and 30 are shown in Figures 1 and 2. Since the tool holders 10, 20, and 30 have the same basic configuration, the following description will focus on the tool holder 20.
The tool holder 20 is configured to be able to detachably hold the tool 20A. For example, the tool holder 20 has a tool holding portion that is able to detachably hold the tool 20A.
The tool holder 20 has a mounting surface 21a that is mounted to the tool holder mounting surfaces 111a to 111c of the turret 110. The tool holder 20 also has a first side surface 21b and a second side surface 21c. When the tool holder 20 is mounted to the tool holder mounting surfaces 111a to 111c, the first side surface 21b is located on one circumferential side and extends along the axial and radial directions. When the tool holder 20 is mounted to the tool holder mounting surfaces 111a to 111c, the second side surface 21c is located on the other circumferential side and extends along the axial and radial directions.
The first side surface 21b and the second side surface 21c of the tool holder 20 are formed so that the distance between the tool holder (including a dummy tool holder) attached to the adjacent tool holder attachment surfaces on one circumferential side and the other circumferential side gradually decreases from the radially outer periphery toward the radially inner periphery. The first side surface 21b and the second side surface 21c of the tool holder 20 are formed so as to extend in an appropriate direction (angle) including a direction perpendicular to the extension direction of the attached surface 21a (tool holder attachment surfaces 111a to 111c).

Wedge members are arranged between the tool holder to be mounted (the object of adjustment of the mounting state) and a member attached (fixed) to the tool holder mounting surface located adjacent to the tool holder mounting surface on one circumferential side to which the tool holder to be mounted is mounted, and between a member attached (fixed) to the tool holder mounting surface located adjacent to the tool holder mounting surface on the other circumferential side.
The member attached to the tool holder mounting surface disposed adjacent to one circumferential side and the other circumferential side of the tool holder mounting surface to which the tool holder to be mounted is attached may be a tool holder or a dummy tool holder.
In the following description, a case will be described in which the tool holders 10 and 30 are attached (fixed) to the tool holder mounting surfaces 111a and 111c which are arranged adjacent to one circumferential side and the other circumferential side of the tool holder mounting surface 111b to which the tool holder 20 to be attached is attached.

A first wedge member is disposed between the tool holder 20 attached to the tool holder mounting surface 111b and the tool holder 10 attached to the tool holder mounting surface 111a disposed on one circumferential side of the tool holder mounting surface 111b.
In this embodiment, the first wedge member has two split wedge members 120 and 130 arranged spaced apart (including in contact) in the axial direction. The split wedge members 120 and 130 are arranged on one axial side (the side close to the rotation shaft 115) and the other axial side (the side opposite to the rotation shaft 115) of the axial center of the first side surface 21b of the tool holder 20.
The split wedge member 120 (130) has an inner surface 121a (131a) on the radially inner side, a first side surface 121b (131b) on one circumferential side, a second side surface 121c (131c) on the other circumferential side, and an outer surface 121d (131d) on the radially outer side.
The split wedge member 120 (130) is arranged so as to be movable along the radial direction with the first side surface 121b and the second side surface 121c of the split wedge member 120 (the first side surface 131b and the second side surface 131c of the split wedge member 130) in contact with the second side surface 11c of the tool holder 10 and the first side surface 21b of the tool holder 20.
That is, when the split wedge member 120 (130) moves radially inward, the gap between the tool holder 20 and the tool holder 10 increases, and the force F1 (F2) moving the tool holder 20 in the direction away from the tool holder 10 attached (fixed) to the tool holder mounting surface 111 a (to the other circumferential side) increases.

In addition, a second wedge member is disposed between the tool holder 20 attached to the tool holder mounting surface 111b and the tool holder 30 attached to the tool holder mounting surface 111c disposed on the other circumferential side of the tool holder mounting surface 111b.
In this embodiment, the second wedge member has two split wedge members 140 and 150 arranged spaced apart (including in contact) in the axial direction. The split wedge members 140 and 150 are arranged on one axial side (the side close to the rotation shaft 115) and the other axial side (the side opposite to the rotation shaft 115) of the axial center of the second side surface 21 c of the tool holder 20.
The split wedge member 140 (150) is formed so as to be movable along the radial direction with the first side surface 141b and the second side surface 141c of the split wedge member 140 (the first side surface 151b and the second side surface 151c of the split wedge member 150) in contact with the second side surface 21c of the tool holder 20 and the first side surface 31b of the tool holder 30.
That is, when the split wedge member 140 (150) moves radially inward, the gap between the tool holder 20 and the tool holder 30 increases, and the force F3 (F4) moving the tool holder 20 in a direction (to one circumferential side) away from the tool holder 30 attached (fixed) to the tool holder mounting surface 111c increases.

In this embodiment, of the three tool holder mounting surfaces 111a to 111c, tool holder mounting surface 111a corresponds to a "first tool holder mounting surface formed on one circumferential side" of the present invention, tool holder mounting surface 111c corresponds to a "third tool holder mounting surface formed on the other circumferential side" of the present invention, and tool holder mounting surface 111b corresponds to a "second tool holder mounting surface formed in the circumferential center" of the present invention.
Moreover, the tool holder 10 corresponds to "a first member attached to a first tool holder mounting surface formed on one circumferential side" of the present invention, the tool holder 30 corresponds to "a second member attached to a third tool holder mounting surface formed on the other circumferential side" of the present invention, and the tool holder 20 corresponds to "a tool holder attached to a second tool holder mounting surface formed in the circumferential center" of the present invention.
The mounting surface 21a of the tool holder 20 corresponds to the "mounting surface arranged opposite the tool holder mounting surface" of the present invention, the first side surface 21b corresponds to the "first wall surface on one circumferential side of the tool holder" or the "first wall surface formed on one circumferential side of the mounting surface" of the present invention, the second side surface 21c corresponds to the "second wall surface on the other circumferential side of the tool holder" or the "second wall surface formed on the other circumferential side of the mounting surface" of the present invention, the second side surface 11c of the tool holder 10 corresponds to the "wall surface on the other circumferential side of the first member" of the present invention, and the first side surface 31b of the tool holder 30 corresponds to the "wall surface on one circumferential side of the second member" of the present invention.
Furthermore, split wedge members 120 and 130 constitute the "first wedge member" of the present invention, the first side surface 121b on one circumferential side of split wedge member 120 and the first side surface 131b on one circumferential side of second split wedge member 130 constitute the "first side surface on one circumferential side of the first wedge member" of the present invention, and the second side surface 121c on the other circumferential side of split wedge member 120 and the second side surface 131c on the other circumferential side of split wedge member 130 constitute the "second side surface on the other circumferential side of the first wedge member" of the present invention. The split wedge members 140 and 150 constitute the "second wedge member" of the present invention, the first side surface 141b on one circumferential side of the split wedge member 140 and the first side surface 151b on one circumferential side of the split wedge member 150 constitute the "first side surface on one circumferential side of the second wedge member" of the present invention, and the second side surface 141c on the other circumferential side of the split wedge member 140 and the second side surface 151c on the other circumferential side of the split wedge member 150 constitute the "second side surface on the other circumferential side of the second wedge member" of the present invention.
Moreover, split wedge members 120, 130, 140 and 150 correspond to the "first split wedge member", the "second split wedge member", the "third split wedge member" and the "fourth split wedge member" of the present invention, respectively.

The tool holder 20 is attached to the tool holder attachment surface 111b of the turret 110 by an attachment means. In this embodiment, the attachment means is composed of an attachment hole having a female thread and an attachment bolt having a male thread that can be screwed into the female thread formed in the attachment hole.
Specifically, first to fourth mounting holes 22a to 22d opening onto the mounting surface 21a are formed in the tool holder 20 at locations spaced apart in the axial direction from one circumferential side region and the other circumferential side region, respectively. Female threads are formed on the inner circumferential surfaces of the first to fourth mounting holes 22a to 22d.
The turret 110 has first to fourth mounting holes 112a to 112d that open onto the tool holder mounting surface 111b at locations spaced apart in the axial direction on one circumferential side region and the other circumferential side region of the tool holder mounting surface 111b. Female threads are formed on the inner circumferential surfaces of the first to fourth mounting holes 112a to 112d.
Further, on the outer circumferential surfaces of the first to fourth mounting bolts 160a to 160d, male threads are formed which can be screwed together with female threads formed in the first to fourth mounting holes 22a to 22d of the tool holder 20 and the first to fourth mounting holes 112a to 112d of the turret 110. The first to fourth mounting bolts 160a to 160d are inserted (screwed) into the first to fourth mounting holes 22a to 22d of the tool holder 20 and the first to fourth mounting holes 112a to 112d of the turret 110.
The tool holder 20 is attached to the tool holder mounting surface 111b by inserting (screwing) the first to fourth mounting bolts 160a to 160d into the first to fourth mounting holes 22a to 22d of the tool holder 20 and the first to fourth mounting holes 112a to 112d of the turret 110 and tightening them in a direction pressing the tool holder 20 against the tool holder mounting surface 111b.
The mounting means for mounting the tool holders 10, 30 to the tool holder mounting surfaces 111a to 111c also have a similar configuration.

Further, a force is applied to the tool holder 20 by the adjustment means for adjusting the mounting state with respect to the tool holder mounting surface 111b.
In this embodiment, the adjustment means is composed of an adjustment hole having a female thread formed therein, and an adjustment bolt having a male thread that can be screwed into the female thread formed in the adjustment hole.
Specifically, the split wedge member 120 has an adjustment hole 122 that opens into a second side surface 121c on the other circumferential side, and the split member 130 has an adjustment hole 132 that opens into a second side surface 131c on the other circumferential side. The split wedge member 140 has an adjustment hole 142 that opens into a first side surface 141b on one circumferential side, and the split wedge member 150 has an adjustment hole 152 that opens into a first side surface 151b on one circumferential side. Female threads are formed on the inner circumferential surfaces of the adjustment holes 122-152.
In addition, the tool holder 20 has a first adjustment hole 23a and a second adjustment hole 23b (not shown) that open onto a first side surface 21b on one circumferential side formed at positions spaced apart in the axial direction in a region on one circumferential side, and a third adjustment hole 23c and a fourth adjustment hole 23d (not shown) that open onto a second side surface 21c on the other circumferential side formed at positions spaced apart in the axial direction in a region on the other circumferential side. Female threads are formed on the inner circumferential surfaces of the first to fourth adjustment holes 23a to 23d.
Further, the outer peripheral surfaces of the first to fourth adjustment bolts 170a to 170d are formed with male threads that can be screwed into female threads formed in the split wedge members 120, 130, 140, 150 and the tool holder 20. The first to fourth adjustment bolts 170a to 170d are inserted (threaded) into the adjustment hole 122 of the split wedge member 120 and the first adjustment hole 23a of the tool holder 20, the adjustment hole 132 of the split wedge member 130 and the second adjustment hole 23b of the tool holder 20, the adjustment hole 142 of the split wedge member 140 and the third adjustment hole 23c of the tool holder 20, and the adjustment hole 152 of the split wedge member 150 and the fourth adjustment hole 23d of the tool holder 20, respectively.

When the first adjustment bolt 170a is inserted (screwed) into the adjustment hole 122 of the split wedge member 120 and the adjustment hole 23a of the tool holder 20 and tightened in a direction to press the second side surface 121c of the split wedge member 120 against the first side surface 21b of the tool holder 20, the split wedge member 120 moves radially inward along the side surface 11c on the other circumferential side of the tool holder 10 attached to the tool holder mounting surface 111a, as shown by the arrow (the position of the split wedge member 120 is adjusted). As a result, the force F1 applied to the portion of the first side surface 21b of the tool holder 20 corresponding to the portion where the adjustment hole 23a is formed, which moves the tool holder 20 in the direction away from the tool holder 10 (to the other circumferential side), increases.
Similarly, by rotating the second adjustment bolt 170b while it is inserted into the adjustment hole 132 of the split wedge member 130 and the adjustment hole 23b of the tool holder 20, the position of the split wedge member 130 can be adjusted, and the force F2 that moves the tool holder 20 in the direction away from the tool holder 10 (to the other circumferential side) and is applied to the location of the first side surface 21b of the tool holder 20 corresponding to the location where the adjustment hole 23b is formed can be adjusted.
Furthermore, when the third adjustment bolt 170c is inserted into the adjustment hole 142 of the split wedge member 140 and the adjustment hole 23c of the tool holder 20 and tightened in a direction to press the second side surface 141c of the split wedge member 140 against the second side surface 21c of the tool holder 20, the split wedge member 140 moves radially inward along the side surface 31b on one circumferential side of the tool holder 30 attached to the tool holder attachment surface 111c as shown by the arrow (the position of the split wedge member 140 is adjusted). This increases the force F3 that moves the tool holder 20 in the direction away from the tool holder 30 (to one circumferential side) and is applied to the second side surface 21c of the tool holder 20 corresponding to the position where the adjustment hole 23c is formed.
Similarly, by rotating the fourth adjustment bolt 170d while it is inserted into the adjustment hole 152 of the split wedge member 150 and the adjustment hole 23d of the tool holder 20, the position of the split wedge member 150 can be adjusted, and a force F4 that moves the tool holder 20 in a direction away from the tool holder 30 (to one circumferential direction) and is applied to a location of the second side surface 21c of the tool holder 20 corresponding to the location where the adjustment hole 23d is formed can be adjusted.
The mounting state of the tool holder 20 relative to the tool holder mounting surface 111b can be adjusted by adjusting at least one of the forces F1 to F4 applied to the first side surface 21b and the second side surface 21c of the tool holder 20. For example, the tool holder 20 can be translated to one circumferential side or the other circumferential side along the extending direction of the tool holder mounting surface 111b, or can be rotated on the tool holder mounting surface 111b.
In this embodiment, the first adjustment bolt 170a and the second adjustment bolt 170b, which constitute the adjustment means, connect the first wedge member (split wedge members 120 and 130) to the tool holder 20, and the third adjustment bolt 170c and the fourth adjustment bolt 170d connect the second wedge member (split wedge members 140 and 150) to the tool holder 20.

In this embodiment, the location where adjustment hole 122 of split wedge member 120 is formed and the location where adjustment hole 132 of split wedge member 130 is formed correspond to "at least one location on the second wall surface of the first wedge member" of the present invention, and the location where adjustment hole 142 of split wedge member 140 is formed and the location where adjustment hole 152 of split wedge member 150 is formed correspond to "at least one location on the first wall surface of the second wedge member" of the present invention.
In addition, the adjustment holes 23a, 23b opening into the first side surface 21b of the tool holder 20 correspond to "at least one circumferential side adjustment hole opening into the first wall surface of the tool holder 20" of the present invention, and the adjustment holes 23c, 23d opening into the second side surface 21c of the tool holder 20 correspond to "at least one circumferential side adjustment hole opening into the second wall surface of the tool holder 20" of the present invention.

Although not shown, an indexing mechanism and a driving mechanism are also provided.
The indexing mechanism rotates the turret 110 and indexes the tool holder holding the tool to be used for the machining operation to a machining position from among the tools held in the tool holders attached to the tool holder mounting surfaces 111a to 111c.
The drive mechanism transmits the rotation of the rotary shaft 115 of the turret 110, which is driven by the main spindle of the machine tool, to a tool held in a tool holder indexed to a processing position.
The turret 110, the indexing mechanism, and the drive mechanism constitute a tool rest 100.
The tool rest 100 corresponds to a first embodiment of the tool rest of the present invention.

Next, an operation for mounting a tool holder on the turret 110 of this embodiment will be described. In the following, a case where the tool holder 20 is mounted on the tool holder mounting surface 111b of the turret 110 will be described.
In this embodiment, a first member and a second member are attached (fixed) to tool holder mounting surfaces 111a and 111c, which are arranged adjacent to one circumferential side and the other circumferential side of the tool holder mounting surface 111b to which the tool holder 20 is attached, and are used as auxiliary members to adjust the mounting state of the tool holder 20 with respect to the tool holder mounting surface 111b.
(Stage 1)
For this purpose, first, a first member and a second member are attached (fixed) to tool holder mounting surfaces 111a and 111c, which are disposed adjacent to one circumferential side and the other circumferential side of tool holder mounting surface 111b. If a member is attached to at least one of tool holder mounting surfaces 111a and 111c, it is assumed that a member has been attached to at least one of tool holder mounting surfaces 111a and 111c, and the process proceeds to the next step.
In the following, a case will be described in which the tool holders 10 and 30 are attached to the tool holder attachment surfaces 111a and 111c as a first member and a second member.
As the first and second members to be attached to the tool holder attachment surfaces 111a and 111c, a dummy tool holder or the like may also be used.
The tool holders 10 and 30 can be attached to the tool holder mounting surfaces 111a and 111c by the above-mentioned attachment means, similar to the method of attaching the tool holder 20 to the tool holder mounting surface 111b. A similar attachment method can also be used when attaching a dummy tool holder.
When the tool holders 10 and 30 are attached to the tool holder attachment surfaces 111a and 111c using the above-mentioned attachment means, the tool holders 10 and 30 are attached approximately in a target attachment state. Therefore, by using the tool holders 10 and 30 attached using the above-mentioned attachment means as auxiliary members, it is possible to adjust the attachment state of the tool holder 20 relative to the tool holder attachment surface 111b. The same applies when a tool holder dummy is used as the first member or the second member.
It should be noted that if it becomes necessary to adjust the mounting condition of the tool holder relative to tool holder mounting surface 111a or 111b after the tool holder is mounted as the first member or the second member on tool holder mounting surface 111a or 111c, a similar method can be used.

(Stage 2)
Next, the tool holder 20 is temporarily attached to the tool holder attachment surface 111b using an attachment means. For example, the first to fourth attachment bolts 260a to 260d are inserted into the first to fourth attachment holes 22a to 22d of the tool holder 20 and the first to fourth attachment holes 112a to 112d of the turret 110 and tightened. At this time, the tool holder 20 is temporarily attached so that it can move when adjusting the attachment state of the tool holder 20 relative to the tool holder attachment surface 111b (the bolts are tightened slightly loosely, not completely).

(Stage 3)
Next, the mounting state of the tool holder 20 relative to the tool holder mounting surface 111b is adjusted using an adjustment means. For example, at least one of the following is rotated (adjusting the position of at least one of the split wedge members 120 to 150): the first adjustment bolt 170a inserted in the adjustment hole 122 of the split wedge member 120 and the first adjustment hole 23a of the tool holder 20, the second adjustment bolt 170b inserted in the adjustment hole 132 of the split wedge member 130 and the second adjustment hole 23b of the tool holder 20, the third adjustment bolt 170c inserted in the adjustment hole 142 of the split wedge member 140 and the third adjustment hole 23c of the tool holder 20, and the fourth adjustment bolt 170d inserted in the adjustment hole 152 of the split wedge member 150 and the fourth adjustment hole 23d of the tool holder 20).

Here, as shown in Fig. 5(a), when the tool center line 20T of the tool 20A held by the tool holder 20, which is shown by a dashed line, is misaligned (misaligned) with the reference line 20Ts, which is shown by a two-dot dashed line, the tool holder 20 needs to be adjusted so that the tool center line 20T coincides with the reference line 20Ts. That is, as shown in Fig. 5(b), the tool holder 20 needs to be moved to the other circumferential side (upward in Fig. 5(a)) along the extending direction of the tool holder mounting surface 111b.
Forces F1 and F2 are applied to the first side surface 21b of the tool holder 20 at locations corresponding to the adjustment hole 122 of the split wedge member 120 and the adjustment hole 132 of the split wedge member 130 to move the tool holder 20 to the other circumferential side, and forces F3 and F4 are applied to the second side surface 21c at locations corresponding to the adjustment hole 142 of the split wedge member 140 and the adjustment hole 152 of the split wedge member 150 to move the tool holder 20 to one circumferential side. Therefore, a method of adjusting at least one of the forces F1 to F4 can be used as a method of moving the tool holder 20.
Specifically, forces F1 and F2 applied to the tool holder 20 shown in Fig. 5A are made relatively larger than forces F3 and F4. For example, a method of making forces F1 and F3 larger, a method of making forces F3 and F4 smaller, or a method of making forces F1 and F2 larger and forces F3 and F4 smaller can be used.
The female threads formed in the first to fourth mounting holes 22a to 22d of the tool holder 20 and the first to fourth mounting holes 112a to 112d of the turret 110, the male threads formed in the first to fourth mounting bolts 160a to 160d, the female threads formed in the adjustment holes 122 to 152 of the split wedge members 120 to 150 and the adjustment holes 23a to 23d of the tool holder 20, and the male threads formed in the first to fourth adjustment bolts 170a to 170d are formed to have a tolerance to allow such movement of the tool holder 20.

Also, as shown in Fig. 6(a), when the tool center line 20T of the tool 20A held by the tool holder 20, shown by a dashed line, is inclined with respect to the reference line 20Ts, shown by a dashed line, the tool holder 20 needs to be adjusted so that the tool center line 20T coincides with the reference line 20Ts. That is, as shown in Fig. 6(b), the tool holder 20 needs to be rotated (counterclockwise in Fig. 6(a)) about the tool holder center point S along the axial direction on the tool center line 20T.
Specifically, forces F2 and F3 applied to the tool holder 20 shown in Fig. 6A are made relatively larger than forces F1 and F4. For example, a method of making forces F2 and F3 larger, a method of making forces F1 and F4 smaller, or a method of making forces F2 and F3 larger and forces F1 and F4 smaller can be used.
The female threads formed in the first to fourth mounting holes 22a to 22d of the tool holder 20 and the first to fourth mounting holes 112a to 112d of the turret 110, the male threads formed in the first to fourth mounting bolts 160a to 160d, the female threads formed in the adjustment holes 122 to 152 of the split wedge members 120 to 150 and the adjustment holes 23a to 23d of the tool holder 20, and the male threads formed in the first to fourth adjustment bolts 270a to 270d are formed to have a tolerance to allow such rotation of the tool holder 20.

In the first embodiment, a wedge member made up of a plurality of split wedge members is disposed, but it is also possible to dispose an integral wedge member.
A second embodiment of the turret of the present invention will now be described with reference to FIG.
The turret 210 of the second embodiment includes a tool holder, a wedge member, and an adjustment means, similar to the turret 110 of the first embodiment.
The turret 210 of the second embodiment differs only in the configuration of the wedge member, and therefore, the configuration of the wedge member will be described below.
The tool rest 200 corresponds to a second embodiment of the tool rest of the present invention.

In this embodiment, a first wedge member 220 is disposed between the tool holder 20 attached to the tool holder mounting surface 211b and the tool holder 10 attached to the tool holder mounting surface 211a disposed on one circumferential side of the tool holder mounting surface 211b.
The first wedge member 220 is formed with a first adjustment hole 222a and a second adjustment hole 222b at positions spaced apart in the axial direction. Female threads are formed on the inner peripheral surfaces of the first adjustment hole 222a and the second adjustment hole 222b. The first adjustment hole 222a and the second adjustment hole 222b are formed to be located on one axial side (the side toward the rotation shaft 115) and the other axial side (the side opposite to the rotation shaft 115) of the axial center of the first side surface 21b of the tool holder 20.
The first wedge member 220 has an inner surface 221a (not shown) on the radially inner side, a first side surface 221b on one circumferential side, a second side surface 221c on the other circumferential side, and an outer surface 221d on the radially outer side.
The first wedge member 220 is arranged so as to be movable along the radial direction (its position along the radial direction is adjustable) with the first side surface 221b and the second side surface 221c of the first wedge member 220 in contact with the second side surface 11c on the other circumferential side of the tool holder 10 and the first side surface 21b of the tool holder 20.
That is, when the first wedge member 220 moves radially inward, the gap between the tool holder 20 and the tool holder 10 increases, and the forces F1 and F2 that move the tool holder 20 in a direction away from the tool holder 10 attached to the tool holder mounting surface 211a (to the other circumferential side) increase.

In addition, a second wedge member 240 is disposed between the tool holder 20 attached to the tool holder mounting surface 211b and the tool holder 10 attached to the tool holder mounting surface 211c disposed on the other circumferential side of the tool holder mounting surface 211b.
The second wedge member 240 is formed with a third adjustment hole 242a and a fourth adjustment hole 242b at positions spaced apart in the axial direction. Female threads are formed on the inner peripheral surfaces of the third adjustment hole 242a and the fourth adjustment hole 242b. The third adjustment hole 242a and the fourth adjustment hole 242b are formed to be located on one axial side (the side of the rotation shaft 115) and the other axial side (the side opposite to the rotation shaft 115) of the axial center of the second side surface 21c of the tool holder 20.
The second wedge member 240 has an inner surface 241a (not shown) on the radially inner side, a first side surface 241b on one circumferential side, a second side surface 241c on the other circumferential side, and an outer surface 241d on the radially outer side.
The second wedge member 240 is positioned so as to be movable along the radial direction (its position along the radial direction is adjustable) with the first side surface 241b and the second side surface 241c of the second wedge member 240 in contact with the second side surface 21c of the tool holder 20 and the first side surface 31b on one circumferential side of the tool holder 30.
That is, when the second wedge member 240 moves radially inward, the gap between the tool holder 20 and the tool holder 30 increases, and forces F3 and F4 that move the tool holder 20 in a direction away from the tool holder 30 attached to the tool holder mounting surface 111c (to one circumferential side) increase.
In this embodiment, the first adjustment bolt 270a and the second adjustment bolt 270b, which constitute the adjustment means, connect the first wedge member 220 and the tool holder 20, and the third adjustment bolt 270c and the fourth adjustment bolt 270d connect the second wedge member 240 and the tool holder 20.

In this embodiment, similarly to the first embodiment, the first to fourth mounting bolts 260a to 260d constituting the mounting means are inserted into the first to fourth mounting holes 22a to 22d of the tool holder 20 and the first to fourth mounting holes 212a to 212d (not shown) of the turret 210.
Further, the first adjustment bolt 270a (not shown) constituting the adjustment member is inserted into the first adjustment hole 222a of the first wedge member 220 and the first adjustment hole 23a of the tool holder 20, the second adjustment bolt 270b (not shown) is inserted into the second adjustment hole 222b of the first wedge member 220 and the second adjustment hole 23b of the tool holder 20, the third adjustment bolt 270c (not shown) is inserted into the third adjustment hole 242a of the second wedge member 240 and the third adjustment hole 23c of the tool holder 20, and the fourth adjustment bolt 270d (not shown) is inserted into the fourth adjustment hole 242b of the second wedge member 240 and the fourth adjustment hole 23d of the tool holder 20.
The operation of mounting the tool holder 20 on the tool holder mounting surface 211b (not shown) of the turret 210 is similar to that of the first embodiment.

In the first and second embodiments, the adjustment bolt constituting the adjustment means is disposed so as to connect the first wedge member to the tool holder and the second wedge member to the tool holder, but this is not limiting.
A third embodiment of the turret of the present invention will now be described with reference to FIG.
The turret 310 of the third embodiment includes a tool holder, a wedge member, and an adjustment member, similar to the turret 110 of the first embodiment.
The turret 310 of the third embodiment differs from that of the first embodiment only in the arrangement of the adjustment bolts that constitute the adjustment means. The arrangement of the adjustment bolts that constitute the adjustment means will be described below.
The tool rest 300 corresponds to a third embodiment of the tool rest of the present invention.

In the first embodiment, the adjustment holes into which the adjustment bolts are inserted are formed in the tool holder, the first wedge member arranged between the tool holder and the first member, and the second wedge member arranged between the tool holder and the second member. In the present embodiment, however, the adjustment holes are formed in the first wedge member arranged between the tool holder and the first member, the second wedge member arranged between the tool holder and the second member, the first member, and the second member.
In this embodiment, similarly to the first embodiment, the first wedge member and the second wedge member are configured by a plurality of split wedge members.

In this embodiment, the split wedge member 320 constituting the first wedge member is formed with an adjustment hole 323 opening to a first side surface 321b on one circumferential side, and the split wedge member 330 (not shown) is formed with an adjustment hole 333 opening to a first side surface 331b on one circumferential side. The split wedge member 340 constituting the second wedge member is formed with an adjustment hole 343 opening to a second side surface 341c on the other circumferential side, and the split wedge member 350 (not shown) is formed with an adjustment hole 353 opening to a second side surface 351c on the other circumferential side.
The tool holder 10 attached to the tool holder mounting surface 311a arranged on one circumferential side relative to the tool holder mounting surface 311b is formed with a third adjustment hole 14c and a fourth adjustment hole 14d (not shown) opening on the second side surface 11c on the other circumferential side at positions spaced apart in the axial direction. The tool holder 30 attached to the tool holder mounting surface 311c arranged on the other circumferential side relative to the tool holder mounting surface 311b is formed with a first adjustment hole 34a and a second adjustment hole 34b (not shown) opening on the first side surface 31b on one circumferential side at positions spaced apart in the axial direction.
A female thread is formed on the inner circumferential surfaces of the adjustment holes 323 to 353 of the split wedge members 320 to 350, the third adjustment hole 14c and the fourth adjustment hole 14d of the first tool holder 10, and the first adjustment hole 34a and the second adjustment hole 34b of the tool holder 30.

The first adjustment bolt 370a constituting the adjustment means is inserted into the adjustment hole 323 of the split wedge member 320 constituting the first wedge member and the third adjustment hole 14c of the tool holder 10, the second adjustment bolt 370b (not shown) is inserted into the adjustment hole 333 of the split wedge member 330 (not shown) constituting the first wedge member and the fourth adjustment hole 14d (not shown) of the tool holder 10, the third adjustment bolt 370c is inserted into the adjustment hole 343 of the split wedge member 340 constituting the second wedge member and the first adjustment hole 34a of the tool holder 30, and the fourth adjustment bolt 370d (not shown) is inserted into the adjustment hole 353 of the split wedge member 350 (not shown) constituting the second wedge member and the second adjustment hole 34b (not shown) of the tool holder 30.
The operation of mounting the tool holder 20 on the tool holder mounting surface 311b of the turret 310 is similar to that of the first embodiment. In this embodiment, the split wedge members 320 and 330 move along the first side surface 21b of the tool holder 20, and the split wedge members 340 and 350 move along the second side surface 21c of the tool holder 20.
In the present embodiment, the third adjustment hole 14c and the fourth adjustment hole 14d of the tool holder 10 correspond to the "adjustment hole opening in the wall surface on the other circumferential side of the first member" of the present invention, the first adjustment hole 34a and the second adjustment hole 34b of the tool holder 30 correspond to the "adjustment hole opening in the wall surface on one circumferential side of the second member" of the present invention, the adjustment hole 323 opening in the first side surface 321b of the split wedge member 320 and the adjustment hole 333 opening in the first side surface 331b of the split wedge member 330 correspond to the "adjustment hole opening in the first side surface of the first wedge member" of the present invention, and the adjustment hole 343 opening in the second side surface 341c of the split wedge member 340 and the adjustment hole 353 opening in the second side surface 351c of the split wedge member 350 correspond to the "adjustment hole opening in the second side surface of the second wedge member" of the present invention.

In the above embodiment, a tool holder mounting method for mounting a tool holder to a turret or a tool holder mounting surface of a turret has been described, but the present invention can also be configured as a tool holder that is mounted to one of the tool holder mounting surfaces of a turret.
for example,
"A tool holder has a mounting surface disposed opposite to one tool holder mounting surface, a first wall surface and a second wall surface formed on one circumferential side and the other circumferential side of the mounting surface and extending along an axial direction and a radial direction, at least one mounting hole opening in the mounting surface, at least one circumferential side adjustment hole opening in the first wall surface, and at least one circumferential side adjustment hole opening in the second wall surface,
The mounting hole is formed so that a mounting bolt can be screwed to press the mounting surface against one of the tool holder mounting surfaces,
the one-circumferential-side adjustment hole is formed so that an adjustment bolt can be screwed into the one-circumferential-side adjustment hole to adjust a position of a first wedge member disposed between the first wall surface and a wall surface on the other circumferential side of the first member attached to a tool holder mounting surface formed on one circumferential side with respect to one tool holder mounting surface,
The tool holder is characterized in that the other circumferential side adjustment hole is formed so that an adjustment bolt can be screwed into the other circumferential side adjustment hole to adjust the position of a second wedge member disposed between a wall surface on one circumferential side of the second member attached to a tool holder mounting surface formed on the other circumferential side of one tool holder mounting surface and the second wall surface.
It can be configured as:
The number and positions of the mounting holes can be changed as appropriate. Preferably, two mounting holes are formed at positions spaced apart in the axial direction on each of one circumferential side and the other circumferential side of the mounting surface. Also preferably, the mounting bolt is configured to be insertable into a mounting hole formed in the tool holder and a mounting hole formed in the turret and opening into one of the tool holder mounting surfaces.
The number and positions of the one-side circumferential adjustment holes and the other-side circumferential adjustment holes can be changed as appropriate. Preferably, the two one-side axial adjustment holes and the other-side circumferential adjustment holes are formed at positions spaced apart in the axial direction. Also, preferably, the adjustment bolt is configured to be insertable into the one-side circumferential adjustment hole and an adjustment hole formed in the first wedge member and opening into a wall surface on the other side of the circumferential direction of the first wedge member.

The present invention is not limited to the configurations described in the embodiments, and various modifications, additions, and deletions are possible.
The first member and the second member attached to the tool holder mounting surface, which are disposed on one circumferential side and the other circumferential side of the tool holder mounting surface to which the tool holder to be mounted (the object of adjustment of the mounting state) is attached, are not limited to the tool holder, and a tool holder dummy or the like can be used.
The mounting means for mounting the tool holder to the tool holder mounting surface is not limited to the mounting means having the configuration described in the embodiment. For example, the number and arrangement of mounting holes constituting the mounting means can be changed as appropriate. Furthermore, the mounting means is not limited to the mounting means constituted by mounting holes and mounting bolts.
The wedge members disposed between the tool holder and the first member and between the tool holder and the second member are not limited to the wedge members described in the embodiment. For example, the shape and position of the wedge members, and the shapes, number and positions of the split wedge members constituting the wedge members can be appropriately changed.
The adjustment means for adjusting the mounting state of the tool holder relative to the tool holder mounting surface of the turret is not limited to the adjustment means described in the embodiment. For example, the number and arrangement of adjustment holes constituting the adjustment means can be changed as appropriate. Furthermore, the adjustment means is not limited to the adjustment holes and adjustment bolts.
The shape, number, arrangement, etc. of the tool holder mounting surface of the turret can be changed as appropriate.
The shape of the tool holder attached to the tool holder attachment surface of the turret can be changed as appropriate.

10, 20, 30 Tool holder 10A, 20A, 20A Tool 11a, 21a, 31a Mounting surface 11b, 21b, 31b First side surface (first wall surface)
11c, 21c, 31c Second side (second wall)
22a to 22d Mounting holes 100, 200, 300 Tool rest 110, 210, 310 Turrets 111a to 111c, 311a to 311c Tool holder mounting surface 112a to 112d Mounting holes 115, 215 Rotating shafts 120 to 150, 320 to 350 Split wedge member 121a ~151a Inner circumferential surface 121b ~ 151b, 221b, 241b, 321b ~ 351b First side surface (first wall surface)
121c to 151c, 221c, 241c, 321c to 351c Second side surface (second wall surface)
121d to 151d, 221d, 241d, 321d to 351d Outer circumferential surfaces 122 to 152, 222a, 222b, 242a, 242b, 323 to 353 Adjustment holes 160a to 160d, 260a to 260d Mounting bolts (mounting members)
170a to 170d Adjustment bolts (adjustment members)
220, 240 Wedge member

Claims (9)

A turret that is rotatable about a rotation center line and has a plurality of tool holder mounting surfaces extending along an axial direction and a circumferential direction formed on an outer periphery thereof along a circumferential direction,
a first member attached to a first tool holder mounting surface formed on one circumferential side among three circumferentially adjacent tool holder mounting surfaces, a second member attached to a third tool holder mounting surface formed on the other circumferential side, and a tool holder attached by a mounting means to the second tool holder mounting surface formed in the circumferential center;
A first wedge member;
A second wedge member;
and an adjustment means,
a gap between a first wall surface on one circumferential side of the tool holder and a wall surface on the other circumferential side of the first member and a gap between a second wall surface on the other circumferential side of the tool holder and a wall surface on one circumferential side of the second member are configured to decrease from a radially outer peripheral side toward a radially inner peripheral side,
the first wedge member is disposed between the tool holder and the first member with a first wall surface on one circumferential side and a second wall surface on the other circumferential side being in contact with the wall surface of the first member and the first wall surface of the tool holder,
the second wedge member is disposed between the tool holder and the second member with a first wall surface on one circumferential side and a second wall surface on the other circumferential side being in contact with the second wall surface of the tool holder and the wall surface of the second member,
the adjustment means is configured to generate, at at least one location on the second wall surface of the first wedge member, a force for moving the tool holder in a direction away from the first member, and to generate, at at least one location on the first wall surface of the second wedge member, a force for moving the tool holder in a direction away from the second member,
a force generated at the at least one location on the second wall surface of the first wedge member and a force generated at the at least one location on the first wall surface of the second wedge member, thereby making it possible to adjust a mounting state of the tool holder relative to the second tool holder mounting surface. 2. The turret of claim 1,
the adjustment means is configured to generate, at a plurality of axially spaced locations on the second wall surface of the first wedge member, forces for moving the tool holder in a direction away from the first member, and to generate, at a plurality of axially spaced locations on the first wall surface of the second wedge member, forces for moving the tool holder in a direction away from the second member. 2. The turret of claim 1,
the first wedge member is composed of a plurality of split wedge members,
the second wedge member is composed of a plurality of split wedge members,
the plurality of split wedge members constituting the first wedge member are arranged between the tool holder and the first member at intervals in the axial direction, with a first wall surface on one circumferential side of each split wedge member and a second wall surface on the other circumferential side thereof being in contact with the wall surface of the first member and the first wall surface of the tool holder,
the plurality of split wedge members constituting the second wedge member are arranged between the tool holder and the second member at intervals in the axial direction, with a first wall surface on one circumferential side of each split wedge member and a second wall surface on the other circumferential side thereof being in contact with the second wall surface of the tool holder and the wall surface of the second member,
the adjustment means is configured to generate, at at least one location on the second wall surface of each of the plurality of split wedge members constituting the first wedge member, a force for moving the tool holder in a direction away from the first member, and to generate, at at least one location on the second wall surface of each of the plurality of split wedge members constituting the second wedge member, a force for moving the tool holder in a direction away from the second member. A turret according to any one of claims 1 to 3,
The mounting means includes a mounting hole having a female thread formed therein, and a mounting bolt having a male thread formed therein that can be screwed into the female thread formed in the mounting hole,
The adjustment means has an adjustment hole having a female thread formed therein, and an adjustment bolt having a male thread formed therein that can be screwed into the female thread formed in the adjustment hole,
the male thread formed on the mounting bolt, the female thread formed on the mounting hole, and the male thread formed on the adjustment bolt, and the female thread formed on the adjustment hole have a tolerance that can accommodate adjustment of the mounting state of the tool holder with respect to the second tool holder mounting surface. A turret according to any one of claims 1 to 4,
The adjustment means has an adjustment hole having a female thread formed therein, and an adjustment bolt having a male thread formed therein that can be screwed into the female thread formed in the adjustment hole,
the adjustment holes are formed in the tool holder and include a circumferential one-side adjustment hole opening in the first wall surface of the tool holder and an other circumferential other-side adjustment hole opening in the second wall surface of the tool holder, an adjustment hole formed in the first wedge member and opening in the second wall surface of the first wedge member, and an adjustment hole formed in the second wedge member and opening in the first wall surface of the second wedge member,
the adjustment bolts include an adjustment bolt inserted into the adjustment hole opening in the second wall surface of the first wedge member and the one-circumferential-side adjustment hole opening in the first wall surface of the tool holder, and an adjustment bolt inserted into the adjustment hole opening in the first wall surface of the second wedge member and the other-circumferential-side adjustment hole opening in the second wall surface of the tool holder. A turret according to any one of claims 1 to 4,
The adjustment means has an adjustment hole having a female thread formed therein, and an adjustment bolt having a male thread formed therein that can be screwed into the female thread formed in the adjustment hole,
the adjustment holes include an adjustment hole formed in the first member and opening into the wall surface of the first member, an adjustment hole formed in the second member and opening into the wall surface of the second member, an adjustment hole formed in the first wedge member and opening into the first wall surface of the first wedge member, and an adjustment hole formed in the second wedge member and opening into the second wall surface of the second wedge member,
The turret is characterized in that the adjustment bolt includes an adjustment bolt that is inserted into the adjustment hole opening in the first wall surface of the first wedge member and the adjustment hole opening in the wall surface of the first member, and an adjustment bolt that is inserted into the adjustment hole opening in the second wall surface of the second wedge member and the adjustment hole opening in the wall surface of the second member. A turret according to any one of claims 1 to 6,
A turret, wherein at least one of the first member and the second member is a dummy for a tool holder. 1. A tool holder mounting method of a turret, the turret being rotatable about a rotation center line and having a plurality of tool holder mounting surfaces extending along an axial direction and a circumferential direction on an outer periphery thereof, the tool holder mounting surfaces comprising:
a step of attaching a first member to a first tool holder mounting surface formed on one circumferential side among three circumferentially adjacent tool holder mounting surfaces, attaching a second member to a third tool holder mounting surface formed on the other circumferential side, temporarily attaching a tool holder to a second tool holder mounting surface formed in a circumferential center by a mounting means, disposing a first wedge member between the tool holder and the first member with a first wall surface on one circumferential side and a second wall surface on the other circumferential side of the first wedge member in contact with a wall surface on the other circumferential side of the first member and a first wall surface on the one circumferential side of the tool holder, and disposing a second wedge member between the tool holder and the second member with a first wall surface on one circumferential side and a second wall surface on the other circumferential side of the second wedge member in contact with a second wall surface on the other circumferential side of the tool holder and a wall surface on the one circumferential side of the second member;
adjusting a mounting state of the tool holder relative to the second tool holder mounting surface by performing at least one of an operation of generating, on at least one location of the second wall surface of the first wedge member, a force that moves the tool holder in a direction away from the first member, and an operation of generating, on at least one location of the first wall surface of the second wedge member, a force that moves the tool holder in a direction away from the second member;
mounting the tool holder to the second tool holder mounting surface by the mounting means;
A tool holder mounting method comprising: A tool holder is attached to one of a plurality of tool holder attachment surfaces formed along a circumferential direction on an outer periphery side of a turret that is rotatable about a rotation center line,
a mounting surface disposed opposite the one of the plurality of tool holder mounting surfaces ;
a first wall surface formed on one circumferential side of the mounting surface and extending along an axial direction and a radial direction;
a second wall surface formed on the other circumferential side of the mounting surface and extending along the axial direction and the radial direction;
At least one mounting hole opening on the mounting surface;
At least one circumferential side adjustment hole opening in the first wall surface;
At least one other circumferential side adjustment hole opening in the second wall surface,
the mounting hole is formed so that a mounting bolt can be screwed into the mounting hole to press the mounting surface against the one of the plurality of tool holder mounting surfaces ;
the one-circumferential-side adjustment hole is formed so that an adjustment bolt can be screwed into the one -circumferential-side adjustment hole to adjust a position of a first wedge member disposed between the first wall surface and a wall surface on the other circumferential side of a first member attached to a tool holder mounting surface formed on one circumferential side with respect to the one of the plurality of tool holder mounting surfaces,
the other-circumferential-side adjustment hole is formed to allow a screw connection of an adjustment bolt for adjusting a position of a second wedge member disposed between a wall surface on one circumferential side of a second member attached to a tool holder mounting surface formed on the other circumferential side with respect to the one of the plurality of tool holder mounting surfaces and the second wall surface.

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