JP6548889B2 - Collision prevention device in tool presetter - Google Patents

Description

  The present invention relates to a tool presetter used to preset tools (tool) such as a tool or a drill in a tool holder for a machine tool, wherein the tool holder is set during automatic measurement by setting the tool in the tool holder. The present invention relates to an anti-collision device in a tool pre-setter that prevents accidents such as interfering or colliding with a column.

  Conventionally, in a tool presetter used to preset tools in a tool holder for a machine tool, a projection device including a light projector, a light receiver, and a screen is provided to confirm the shape and size (position) of the tool in advance. It is done. Moreover, this projection apparatus is installed in the fixed state in the position which opposes on both sides of the tool holder mounted to the spindle installed on the bed.

  Generally, when setting a tool in a tool holder in a tool presetter, rough setting is performed in advance before setting to a predetermined dimension, and then the correct position such as the shape and size of the tool is confirmed, and the final check is completed. The work of the tool preset is complete.

  And the confirmation work of a position, an angle, a shape, etc. is performed through a projection apparatus until said work completion (for example, refer patent document 1).

  Also, in recent years, in order to perform automatic measurement of the tool presetter, an automatic control device that drives the column in advance includes an axis in the horizontal direction (X-axis direction) or vertical direction (Z-axis) moving to the tool spindle side It is common to move the column toward the X and Z axis coordinates specified in the program by inputting the coordinates based on the conventional data and the shape and dimensions (positions) of the actual tool (object to be measured) It is.

  However, in the conventional automatic measurement of the tool presetter, the program is manually input to the control device, and the tool presetter is used when the operator inputs incorrect data or program and does not perform confirmation operation in particular. The tool column and the tool holder collide with each other, causing damage to the tool presetter, the tool holder and the tool, and delaying the measurement operation.

  In particular, a program to be executed may be a tool ring (tool) having a small diameter different from the conventional one, or a tool ring having a large diameter set on the presetter side. At this time, the coordinates of the movement destination move to a point close to the spindle axis, but the outermost diameter portion of the tooling actually set is at a point in the middle of movement, and a collision accident occurs here.

JP 10-138093 A

  The present invention pays attention to such conventional problems, and while the tool is set in the tool holder and automatic measurement is performed, the optical detection device detects that the tool holder or the tool interferes with or collides with the column. It is an object of the present invention to provide an anti-collision device in a tool presetter in which collision drive can be prevented in advance by stopping the driving device and the elevation driving device of the guide member.

In order to achieve the above object, the present invention provides a rotatably drivable spindle for mounting a tool holder for detachably mounting a tool on a bed installed on a machine base, and a drive with respect to this spindle A vertical column (Z direction) is provided so as to be movable forward and backward in the horizontal direction (X direction) through the device, and a guide member disposed vertically movable relative to the vertical column is orthogonal to the column A horizontal projection device consisting of a light projector, a light receiver and a projector at opposite positions across the tool holder via two support arms provided in the same direction, and a tool image from this horizontal projection device Horizontal movement (collapse) of the column (X direction) and collision based on the control signal from the controller and the control device to which the coordinate information consisting of the shape and position of the tool attached to the tool holder in advance is input. A tool presetter that performs automatic measurement while automatically controlling the vertical movement (Z direction) movement of a guide member arranged to be movable up and down with respect to each other, wherein the spindle side surface upper and lower portions of the column are opposed to each other The position is provided with a light detection device consisting of a light emitter and a light receiver for preventing the column and the guide member from colliding with the tool holder and the tool during automatic measurement of the tool, and the light emitter and the light receiver When the tool holder or the tool shields the optical axis between them, the driving device for the column and the lifting and lowering driving device for the guide member are stopped, and the guide disposed so as to be able to move up and down with respect to the column members, horizontal on the vertical projection shadow device consisting of light projector and a light receiver for projecting shadow tools be pivotable relative to said support arm attached to the tool holder from the horizontal and the upper vertical direction A light emitter and a light receiver for preventing collision of a column or guide member with a tool holder or tool during automatic measurement of the tool at opposite positions of two support arms provided on the guide member The present invention is summarized as providing another light detection device comprising

According to the present invention, a rotatably drivable spindle for attaching a tool holder for detachably mounting a tool on a bed installed on a machine base as described above, and a driving device for this spindle A vertical column (Z direction) which can be advanced and retracted in the horizontal direction (X direction), and a guide member disposed movably up and down with respect to the vertical column, in a direction perpendicular to the column A horizontal projection device comprising a light projector, a light receiver and a projector is installed at a position facing each other across the tool holder via two support arms provided, and a tool image signal from this horizontal projection device; Lifting of the column in the horizontal direction (X direction) and lifting of the column based on the control signal from the controller which input coordinate information consisting of the shape and position of the tool attached to the tool holder in advance. A tool presetter that performs automatic measurement while automatically controlling vertical movement (Z direction) movement of a guide member that is disposed, wherein the positions of the upper and lower sides of the spindle side of the column are opposite to each other. There is provided a light detection device comprising a light emitter and a light receiver for preventing the column and the guide member from colliding with the tool holder and the tool during automatic measurement of the tool, and an optical axis between the light emitter and the light receiver Since the driving device for the column and the lifting and lowering drive device for the guide member are stopped when the tool holder and the tool are shielded from light, the tool holder and the tool are set during automatic measurement by setting the tool in the tool holder. It is possible to prevent a collision accident by stopping the driving device of the column and the elevating and driving device of the guide member by detecting the occurrence of interference or collision with the column by the light detection device. Tool pre-setters and the tool holder, or a tool to damage, it is not possible to delay the measurement work, safely, yet there is an effect that it can be done efficiently measurement work.

It is a front view of the tool presetter which implemented this invention. It is a side view of FIG. It is a top view of FIG. FIG. 4 is a partially enlarged side view taken along line AA of FIG. 3;

Hereinafter, an embodiment of the present invention will be described based on the attached drawings.
1 is a front view of a tool presetter according to the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG. 4 is a partially enlarged side view of FIG. In the embodiment of the present invention, the tool presetter is configured to attach and detach a tool (tool) T to be a measurement object such as a tool or a drill used on a machine tool on a bed 2 horizontally installed on the machine base 1 The spindle 4 is mounted on a rotationally drivable (rotationally driven by a not-shown rotation drive motor) for attaching the tool holder 3 to be mounted, and a driving device such as a not-shown servo motor with respect to the spindle 4 A column 5 is provided so as to be movable forward and backward in the horizontal direction (X direction) on the bed 2.

  A guide member 6 which can be raised and lowered by a driving device (not shown) is disposed on a column 5 erected in a vertical direction (Z direction) with respect to the bed 2 and the guide member 6 is orthogonal to the column 5 Horizontal projector 11 consisting of a light projector 8, a light receiver 9 and a projector 10 at opposite positions across the tool holder 3 via two support arms 7a and 7b provided in the It is

  The tool presetter of the present invention is a tool image signal from the horizontal projection device 11 (an image signal obtained by projecting from the horizontal direction the tip of the tool T vertically mounted on the bed 2 via the tool holder 3) In addition, based on a control signal from a control device (not shown) to which coordinate information consisting of the shape and position of the tool T to be attached to the tool holder 3 is input in advance, movement of the column 5 in the horizontal direction (X direction) On the other hand, the automatic measurement is performed while automatically controlling the movement of the guide member 6 disposed so as to be able to move up and down in the vertical direction (Z direction).

As shown in FIGS. 1 to 3, the column 5 and the guide member 6 are mounted on the tool holder 3 or the guide member 6 during the automatic measurement of the tool T at opposite positions of the side surface upper and lower portions. A light detection device comprising a commercially available transmissive light emitter 13a and a light receiver 13b for preventing collision with the tool T is provided , and an optical axis between the light emitter 13a and the light receiver 13b. When the tool holder 3 or the tool T shields P from light, the driving device for the column 5 and the elevation driving device for the guide member 6 are stopped to prevent a collision accident in advance.

As another embodiment of the invention, the guide member 6 which is vertically movably disposed relative to the column 5 is attached to the tool holder 3 tools - to throw a shadow Le T from the horizontal and the upper vertical direction a horizontal upper vertical projection shadow device consisting of the light receiver 14b and pivotally mounted a light projector 14a which may, in the position of the pivot support arm 16 provided on the support arm 7a provided in the guide portion 6, automatic measurement tool T It is also possible to provide a second light detection device consisting of a light emitter 15a and a light receiver 15b for preventing the column 5 and the guide member 6 from colliding with the tool holder 3 and the tool T.

  In addition, even if it moves to a horizontal position or a vertical position by providing in the turning support arm 16, it operate | moves as a collision prevention apparatus.

  The present invention is configured as described above, and in the case of performing automatic measurement, the tool T which is a measurement object is attached to and set on the tool holder 3 of the spindle 4.

  Then, measurement is started in advance based on the control signal from the control device based on the conventional data program and new data program based on the X and Z axis coordinates of the measurement point.

For measurement, the X and Z axis coordinates of the measurement point previously input to the control device, and the tool image signal from the horizontal projection device 11 (the tip of the tool T mounted vertically on the bed 2 via the tool holder 3 The automatic measurement is performed while moving the column 5 while comparing with the image signal (projected in the horizontal direction), but the light emission arranged at the upper and lower portions of the column 5 while moving to the registered coordinate point When the tool holder 3 or the tool T shields the light axis P between the light source 13a and the light receiver 13b, this is detected to immediately stop the drive device for the column 5 and the elevation drive device for the guide member 6 And prevent collisions in advance.

  Thereby, it is possible to prevent the tool holder 3 and the tool T from interfering or colliding with the column 5 in advance, damaging the tool presetter, the tool holder 3 and the tool T, or delaying the measurement operation. The measurement work can be performed safely and efficiently. Therefore, the workability and productivity of the automatic measurement operation of the tool presetter can be improved.

1 machine 2 bet T tool (tool)
Reference Signs List 3 tool holder 4 spindle 5 column 6 guide member 7a, 7b support arm 8 light emitter 9 light receiver 10 projector 11 horizontal projection device 12 control unit control box 13a light emitter 13b light receiver 14a light emitter 14b light receiver 15a light emitter 15b light receiver 16 swivel support arm

Claims (1)

A rotatably drivable spindle for mounting a tool holder for detachably mounting a tool on a bed installed on a machine base, and a horizontal direction (X direction) with respect to the spindle via a drive device And a vertically (vertically) installed column (Z direction), and the two support members provided in the direction orthogonal to the column on a guide member disposed elevatingly with respect to the vertically installed column A horizontal projection device consisting of a light projector, a light receiver and a projector is installed at a position opposite to each other across the tool holder via an arm, and a tool image signal from this horizontal projection device and a tool attached in advance to the tool holder Of the column in the horizontal direction (X direction) based on the control signal from the controller which has input coordinate information consisting of the shape and position of A tool presetter to perform automatic measurement while automatically controlling the vertical movement (Z direction) of the member,
A light detection device consisting of a light emitter and a light receiver for preventing the column or guide member from colliding with the tool holder or tool during automatic measurement of the tool at opposite positions of the upper and lower spindle side surfaces of the column And, when the tool holder or the tool shields the optical axis between the light emitter and the light receiver, the driving device for the column and the elevation driving device for the guide member are stopped, and the column is provided. horizontal upper vertical to vertically movably disposed a guide member, consisting of light projector and a light receiver for projecting shadow tools be pivotable relative to said support arm attached to the tool holder from the horizontal and the upper vertical direction with respect to and projecting the shadow device, the on opposing positions of the two support arms provided on the guide member, the column and guide member toolholder or tool during automatic measurement of the tool Emitter and the light receiver and the other in anti-collision device in the tool presetter, characterized in that a light detecting device comprising a for preventing the collision.

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