JPH0741518B2 - Tool presetter device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a tool presetter device used when setting a tool holder to which a tool to be measured is attached to a tool presetter.

(Prior Art) A tool presetter sets various conditions such as the length from the reference end face of the tool holder to the tip of the attached tool, etc. It is used for presetting, and a jig interposed between the tool holder on which the tool to be measured is attached and the spindle on the tool presetter side is also used.

This jig has a tool holder mounting part for detachably fitting and fixing the mounting shaft part of the tool holder at the tip and a taper shank part for mounting to the tool presetter at the rear end. In the conventional jig of this type, even if the tool holder for mounting the tool to be measured is equipped with a tool rear end positioning tool that is internally screw-fitted so that the axial direction position can be adjusted, With the structure attached to the jig, the tool rear end positioning tool cannot be rotated from the outside to adjust the axial position.

(Problems to be Solved by the Invention) When the tool holder provided with the tool rear end positioning tool is used as described above, the tool presetter is used to measure the tool presetter using the tool holder and the jig. Set the tool, as a result of measuring the length between the tip of the measured tool and the reference end surface of the tool holder, when there is an error between the measured value and the set value, in the tool holder It is necessary to rotate the tool rear end positioner to adjust the amount of protrusion of the tool from the tool holder.However, in the conventional jig as described above, after the measurement, the tool holder is temporarily removed from the jig, After rotating the tool rear end positioning tool from the rear end mounting shaft side of the tool holder, set the tool holder on the jig again or move the tool from the tool holder to which the jig is attached. It is necessary to remove the tool once, rotate the tool rear end positioning tool from the tool mounting hole side, and then set the tool in the tool holder again.

Therefore, a great deal of labor and time is required for the rotation operation of the tool rear end positioning tool in the tool holder, which causes a significant decrease in work efficiency.

(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, the present invention provides
According to claim 1, the mounting shaft portion 3 of the tool holder 2,
Tool holder mounting part for detachably fitting and fixing 3'4,
A tool presetter jig 1, 1'having a tip 4'is provided with an operation rod 12 penetrating the tool holder mounting portions 4, 4'in a concentric state. The operation rod 12 is installed so that it can be moved.
Can be independently moved in the axial direction.
The rotary operation tool 15, 15 'that rotates integrally with 12 is attached to the jig 1, 1'
In addition, it is supported so that it can only rotate at a fixed position, and the rotary operation tool 1
The openings 17,17 'for rotating 5,15'
An elastic member 13 is provided inside 1, 1 ', and further urges the operation rod 12 in a direction to project from the tool holder mounting portion 4, 4', and at the tip of the operation rod 12, the tool holder 2 is attached. Proposal of a tool presetter device that is provided with a rotary operation fitting portion 22 that can be fitted to the rotary operation fitted portion 21 of the tool rear end positioning tool 20 that is internally screw-fitted so that the axial position can be adjusted. To do.

Alternatively, according to the present invention, in claim 1, a taper shank portion 5 for mounting on a tool presetter spindle 29 is provided at a rear end of the tool presetter jig 1, and the jig 1 includes the spindle 29. It is characterized in that it can be detachably attached to.

Further, according to the present invention, in the apparatus according to claim 1, the tool presetter jig 1'is integrally formed with a tool presetter spindle 29 'and is a part of the spindle 29'. To do.

(Operation of the Invention) The rear end mounting shafts 3, 3'of the tool holder 2 are attached to the jigs 1, 1 '.
Of the rotary operation tool 15, 15 'is fitted and fixed to the tool holder attachment portion 4, 4'of the jig 1, 1'.
By rotating the operation rod 12 by rotating it through 7 ', the rotation operation fitting portion 22 at the tip of the operation rod 12 which is urged by the elastic member 13 in the protruding direction is provided in the tool holder 2. It can be fitted to the rotary operation fitting portion 21 of the tool rear end positioning tool 20. This operation is performed irrespective of the initial position of the tool tip positioning tool 20 because the operation rod 12 can move backwards against the elastic member 13.

The length from the reference end surface 9,29'a of the tool holder 2 to the tip of the tool is measured by the jigs 1 and 1'integral with or integral with the springs 29,29 'of the tool presetter, as is conventionally known. However, when it is necessary to adjust the position of the tool rear end positioning tool 20 in the tool holder 2 based on the measurement result, the rotary operation tools 15, 15 'of the jigs 1, 1'can be adjusted. The operating rod 12 is rotated through the openings 17, 17 'of the jigs 1, 1'. The rotation of the operation rod 12 is caused by the fitting portion 22 at the tip and the fitted portion on the tool rear end positioning tool 20 side.
21 is transmitted to the tool rear end positioning tool 20 via the tool 21, and the tool rear end positioning tool 20 screwed into the tool holder 2 is rotated in conjunction with the tool rear end positioning tool 20 to move in the axial direction with respect to the tool holder 2. Will be done. When this moving direction is the forward direction (tool pushing direction), the operating rod 12 biased by the elastic member 13 in the projecting direction also follows, and the moving direction of the tool rear end positioning tool 20 is the backward direction. Sometimes,
The operation rod 12 is pressed against the biasing force of the elastic member 13 by the tool rear end positioning tool 20 and integrally moves backward.

Prior to the above operation, the tool for the tool holder 2
If the fixing of 27 is released and the tool 27 is moved along with the movement of the tool rear end positioning tool 20, the tool tip position is immediately measured again after adjusting the position of the tool rear end positioning tool 20. You can do it.

(Example) Hereinafter, one example of the present invention will be described with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a jig main body, which has a tool holder mounting portion 4 at which the mounting shaft portion 3 of the tool holder 2 is detachably fitted and fixed, and at the rear end. Has a tapered shank portion 5 for attachment to a tool presetter. The tool holder mounting portion 4 has a tool holder mounting hole 6 into which the mounting shaft portion 3 of the tool holder 2 is fitted.
A fixing screw shaft 8 which can be inserted into and removed from a fixing hole 7 provided in the mounting shaft portion 3 in a radial direction, and a front end face 10 with which a rear end face of the tool holder 2, that is, a reference end face 9 comes into contact. It consists of and. Reference numeral 11 is a pull bolt attached to the jig body 1 so as to project from the rear end of the tapered shank portion 5.

Reference numeral 12 is an operation rod that is concentrically housed inside the jig body 1, and the tip end side thereof is the tool holder mounting portion 4
, A compression coil spring 13 which is concentrically penetrated through the tool holder mounting hole 6 and protrudes from the jig tip and is interposed between the rear end flange 12a and the inner end of the pull bolt 11.
Is urged in the protruding direction. The operation rod 12
As shown in FIG. 3 and FIG. 4, except for the rear end flange portion 12a, a cylindrical rod is machined into a square columnar shape with cylindrical surfaces 12b left at the four corners. The jig body 1 is provided with a cylindrical operation rod support hole 14 for supporting the operation rod 12 through the cylindrical surface 12b of the jig so that the operation rod 12 can rotate about its axis and move in the axis direction. There is.

Reference numeral 15 denotes a rotary operation tool for rotationally operating the operation rod 12, which allows the operation rod 12 to move independently in the axial direction through the square hole 16, but is designed to rotate integrally with the operation rod 12. A diametrical through hole 17 fitted on the jig body 1 and provided in the jig body 1.
It is loosely fitted inside so that it can only rotate. Both end openings 17a of the through hole 17 are widened in the circumferential direction, and the peripheral surface 15a of the rotary operation tool 15 exposed to the outside can be easily rotated through the openings 17a. In addition, a spacer 18 such as a tetragonal resin that reduces frictional resistance is provided between both ends of the rotary operation tool 15 in the axial direction and both side surfaces of the through hole 17.
Further, a plurality of holes 19 that can be used when rotating using a tool are provided on the peripheral surface of the rotary operation tool 15 at appropriate intervals in the circumferential direction.

As shown in FIGS. 2 and 5, the distal end of the operation rod 12 is screwed into the tool holder 2 so that the axial position of the tool holder 2 can be adjusted. A fitting portion (convex portion) 22 for rotation operation, which can be fitted to the joint portion (concave groove) 21 so as to be relatively non-rotatable, is provided in a protruding manner. Reference numeral 23 is an axial through hole provided concentrically in the tool holder 2, and the tool rear end positioning tool 20 is screwed into a screw hole portion 23a formed in an intermediate portion thereof, and a tool is provided at a tip end portion thereof. A gripping chuck 24 is attached. In addition, the tool rear end positioning device 20,
A conical concave portion 25 for receiving the rear end of the tool, a through hole 26 penetrating between the concave portion 25 and the fitted portion (concave groove) 21, and a square hole portion 26a formed in the through hole 26. I have it.

As shown in phantom lines in FIG. 6, the tool holder 2 has
A tool 27 such as a drill is attached using the tool gripping chuck 24. At this time, the protruding end of the tool 27 from the tool holder 2, in other words, the reference end surface of the tool holder 2, is obtained by fitting and abutting the rear end of the tool 27 into the recess 25 of the tool rear end positioning device 20. Length from 9 to the tip of tool 27 l ₁
Is determined.

The tool holder 2 to which the tool 27 is attached as described above,
It is attached to the jig body 1 as follows. That is, the first
As shown in FIGS. 2 and 3, the operation rod 12 of the jig body 1
With the urging force of the spring 13 at the protruding limit position, the mounting shaft portion 3 of the tool holder 2 is fitted into the tool holder mounting hole 6 of the jig body 1, and the reference end surface 9 and the jig body are The tip surface 10 of 1 is brought into contact. Then, with the fixing hole 7 aligned with the tip position of the fixing screw shaft 8, the fixing screw shaft 8
6 is rotated in the tightening direction to press the tip taper shaft portion 8a of the fixing screw shaft 8 into the fixing hole 7 as shown in FIG. 6, so that the tool holder 2 is attached to the tip of the jig body 1. Combined and integrated concentrically.

At this time, the tool rear end positioning tool in the tool holder 2
The operation rod 12 projecting from the jig body 1 is pressed against the spring 13 to move the operation rod 12.
Even if the rotating operation fitting portion 22 and the rotating operation fitted portion 21 of the tool rear end positioning tool 20 in the tool holder 2 are not fitted to each other, they are urged by the spring 13 to bring the end surfaces into contact with each other. They are in contact with each other. Therefore, by rotating the rotary operation tool 15 from the outside of the jig body 1 to rotate the operation rod 12 around its axis, as shown in FIG. The part 22 can be reliably fitted to the rotary operation fitted part 21 of the tool rear end positioning tool 20.

When the tool holder 2 having the tool 27 attached thereto is set on the jig body 1 as described above, the jig body 1 is attached to the spindle 29 of the tool presetter body 28 as shown in FIG.
By fitting the taper shank portion 5 of
Pull bolt protruding from the tapered shank portion 5
The jig body 1 is concentrically connected to the spindle 29 by 11 and pull bolt pulling means connected to the spindle 29. In this state, move the stylus 30 of the tool presetter up and down (spindle 29 and axial direction) to the spindle.
Move the stylus 30 to the horizontal direction intersecting the axis of 29 using the movement operation knobs 31 and 32 in each direction.
Then, the length L from the upper end reference level 33 of the spindle 29 to the tip of the tool 27 is measured.

When the tapered shank portion 5 of the jig body 1 is fitted and fixed to the spindle 29 as described above, the upper end reference position 5a of the tapered shank portion 5 shown in FIG. 6 and the upper end of the spindle 29 shown in FIG. Since it matches the reference level 33, the upper end reference position 5a of the taper shank portion 5 in the jig body 1
By subtracting a constant length l ₀ from the tip end face 10 to the measured length L, the reference end face 9 in the tool holder 2
The length l ₁ from to the tip of the tool 27 can be obtained.

However, when the length l ₁ obtained by the tool presetter as described above is different from the target value, the position adjustment of the tool rear end positioning tool 20 in the tool holder 2 must be performed. At this time, the tool gripping chuck 24
Rotating the rotary operation tool 15 on the jig body 1 side as described above in a state where the fixing action of the tool 27 by the is released and the tool 27 can freely move in and out of the tool holder 2 in the axial direction. Let

That is, by rotating the operation rod 12 with the rotation operation tool 15 in the screwing direction of the tool rear end positioning tool 20, the fitting portion 22 on the operation rod 12 side and the fitted portion of the tool rear end positioning tool 20 foot. The tool rear end positioning tool 20 that is interlocked with the operation rod 12 by fitting with the tool 21 rotates in the screw-in direction to rotate the tool 27.
Move in the direction to push the
It follows and moves forward with the urging force of. On the contrary, by rotating the operation rod 12 in the screw return direction of the tool rear end positioning tool 20 by the rotation operation tool 15, the tool rear end positioning tool 20 rotates in the screw return direction and the operation rod 12 is rotated by the spring 13. It moves backward while pushing back against the urging force of. In this way, the tool rear end positioning tool 20 is moved back and forth in the axial direction, and the tool 27
If the rear end receiving position of the rear end is finely adjusted in the axial direction, the tool 27 is fixed by the tool gripping chuck 24 with its rear end abutting against the concave portion 25 of the tool rear end positioning tool 20, and again the above-mentioned. As described above, the length L is measured, the length l ₁ is calculated, and it is confirmed that the length l ₁ is the target value.

FIG. 8 shows another embodiment of the present invention. In the above embodiment, the jig body 1 is detachably attached to the spindle 29 of the two presetter body 28 by the shank portion 5, and at the time of attachment. The pulling force is applied to the pull bolt 11 so that the jig body 1 is integrally fixed to the spindle 29. In the present embodiment, however, the jig body 1'is extended by the extension of the spindle 29 '. Is integrally formed on the jig 29 'to form a part of the spindle 29'. The jig body 1'which forms a part of the spindle 29 'is provided with the same reference numeral as the structure having the same role as that of the above embodiment. As shown in FIG. 9, the rotary operation tool 15 is directly operated in the above-mentioned embodiment, but in this embodiment, it is shown in FIG. As shown in the figure, the gear part 15'a ₁
The provided the auxiliary rotary operating member 15'a with the outer peripheral gear portion 15'a ₂ meshing with this' coaxially with pivot 15'b, the jig body 1 'spindle 29 opening 17 provided in the' By rotating the sub-rotating operation tool 15'a in the arrow direction or the counter-arrow direction through the taper shank portion 3 '.
It is possible to measure the length l ₁ to the tip of the tool 27 attached to the tool holder 2 supported by being fitted into the tool holder attachment portion 4'of the jig body 1 '.

In this embodiment, the structure is simple because it is directly provided on the tool presetter spindle, and the tip surface 29'a of the spindle 29 'serves as the reference position, which facilitates the measurement. .

(Effects of the Invention) As described above, according to the tool presetter device of the present invention,
Without removing the tool holder set on the jig integrated with the tool presetter (first embodiment) or integrated with the jig (second embodiment) from the jig or removing the tool from the tool holder, The rotation operation of the tool rear end positioning tool in the tool holder can be easily and easily performed from the outside of the jig, and the adjustment work of the axial position of the tool rear end positioning tool in the tool holder can be performed very efficiently. You can do it.

[Brief description of drawings]

1 is a vertical side view of the jig, FIG. 2 is an external side view of the jig and a vertical side view of the tool holder, and FIG. 3 is AA of FIG.
A line sectional view, FIG. 4 is a sectional view taken along line BB of FIG. 1, FIG. 5 is a perspective view showing the tip end portion of the operating rod and the tool rear end positioning tool, and FIG. 6 is a jig with a tool holder. FIG. 7 is a side view for explaining a usage state of the tool presetter, FIG. 8 is a side view for longitudinally using the tool presetter in another embodiment of the present invention, and FIG. 9 is FIG. 6 is a cross-sectional view taken along line CC of FIG. 1, 1 '... Jig body, 2 ... Tool holder, 3 ... Mounting shaft part, 4 ... Tool holder mounting part, 5 ... Taper shank part, 9 ... Tool holder reference end face, 10 ... Tip surface of jig main body, 12 …… operation rod, 13 …… compression coil spring, 14 …… cylindrical operation rod support hole, 15,1
5 '... Rotating operation tool, 16 ... square hole, 17 ... through hole, 20 ...
… Tool rear end positioning tool, 21 …… Rotating mating part (concave groove), 22 …… Rotating mating part (convex), 24 …… Tool gripping chuck, 27 …… Tool, 28 ...... Tool presetter body, 29,29 '...... Spindle, 30 ...... Stylus, 33 ...
… The upper reference level of the spindle 29.

Claims (3)

[Claims] 1. A tool presetter jig 1, 1'having a tool holder mounting portion 4, 4'for detachably fitting and fixing the mounting shaft portion 3, 3'of the tool holder 2 to the tool. Operation rod 1 that passes through holder mounting parts 4, 4'concentrically
2 is installed so that it can rotate about its axis and move in the axis direction, and the operation rod 12 can be independently moved in the axis direction. Openings 17, 17 'for supporting the rotating operation tools 15, 15' that rotate integrally with the jigs 1, 1'for rotation only in a fixed position and for rotating the rotating operation tools 15, 15 '. Is provided on the jig 1, 1 ', and the operation rod 12 is further attached to the tool holder mounting portion.
A tool rear end positioning tool, which is internally provided with an elastic member 13 for urging in a direction of projecting from 4, 4 ', and is internally screw-fitted into the tool holder 2 at the tip of the operation rod 12 so as to adjust the axial position thereof. A tool presetter device comprising a rotary operation fitting part (22) capable of fitting to a rotary operation fitted part (21). 2. The tool presetter jig 1 has a taper shank portion 5 for attachment to a tool presetter spindle 29 at the rear end thereof, and the jig 1 is detachably attached to the spindle 29. The tool presetter device according to claim 1, wherein: 3. The tool presetter jig 1'is integrally formed with a tool presetter spindle 29 'and is a part of the spindle 29'.
The described tool presetter device.