JPH11170135A - Workpiece positioning jig for workpiec vise - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a workpiece positioning jig for a workpiece vise which is adapted to be attached to a workpiece vise body so as to regulate a position of a workpiece clamped by the vise, in a direction orthogonal to the clamping direction thereof. SOLUTION: A workpiece positioning jig for a workpiece vise is composed of a single attaching bolt 31, a sleeve 32 having a bore through which the attaching bolt extends, an arm block 33 attached to the sleeve so as to be rotatable about the axis of the attaching bolt 31, stoppers 33, 34 for regulating the rotationend of the arm block and a positioning rod 35 attached to the front end of the arm block so that it can be advanced and reteacted in a direction parallel with the axis of the attaching bolt 31, and can be fixed. The workpiece positioning jig is attached to a side surface of the workpiece vise 23 by the attaching bolt 31 directly or through the intermediary of a spacer 36. A workpiece is clamped in a condition in which the arm block 33 is turned down toward the workpiece so as to allow the workpiece to abut against the front end of the positioning rod 35. When a side surface of the workpiece on the side which abuts against the positioning rod 35, is machined, the arm block 33 is turned toward the side opposite to the workpiece.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vise used for fixing a work (workpiece) to a table of a machine tool, and more particularly to a work vise in a direction perpendicular to a holding direction of a work held by the vise. The present invention relates to a positioning jig to be attached to a work vise main body and used for defining a position.

[0002]

2. Description of the Related Art When drilling a workpiece with a drilling machine, the drilling position is set in two-dimensional coordinates. Since this two-dimensional position is set by the relative positional relationship between the tool and the table, in order to perform machining at an accurate position, either fix the work at the exact position on the table or fix the work on the table at the fixed position. Must be detected to determine the position of the tool. When the work is fixed to the table via the work vise, the position of the work in the clamping direction is determined by the position of the fixing claw of the vise. However, the position of the work in the direction perpendicular to the pinch cannot be defined only by the vise.

FIG. 4 is a plan view schematically showing a state in which a work 5 is clamped by a work vise 23 fixed to a table of a machine tool. The work 5 includes a fixed claw 3 and a movable claw 4 of the vise.
And is sandwiched between. The fixed claw 3 is fixed to a fixed block 17 integrated with the base 2 of the vise. On the other hand, the movable claw 4 is fixed to a movable base 7 which is screwed to a screw rod 8b which is rotated by a rotation operation of a handle 8 and which advances and retreats. Therefore,
Once the work vise 23 is fixed to the table,
Since the position of the fixed claw 3 is determined, if the work is clamped with the processing reference side of the work 5 as the fixed claw side, the processing position in the direction of being clamped by the vise can be easily set. However, since the position of the work in the direction orthogonal to the holding direction is not determined, the positioning block 2 is attached to the table.
2 is mounted, and the side of the work 5 is held in contact with the positioning block 22 by the vice 23 so that the fixed position of the positioning block 22 is used as a reference.
It becomes possible to set the processing position of the work in the direction perpendicular to the holding direction.

[0004]

However, when such a positioning block 22 is used, when the side surface of the work is to be machined by a milling machine or a slotter, the positioning block 22 is in the way and cannot be machined. . When the positioning block 22 is removed for processing,
Next, since the positional accuracy when the positioning block is attached is not guaranteed, it is necessary to measure the position of the positioning block 22 again. Although it is not impossible to define the fixed position of the positioning block 22 on the table by using the knock pin or the key groove of the table, it is troublesome to attach and detach the positioning blocks 22 one by one. In addition, since the two members, the vise and the positioning block, must be positioned and fixed on the table, much more time is required for the setup work before processing.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is possible to easily set a reference position in a direction perpendicular to the direction in which a work to be mounted on a work vise and held by the vise is held, and When processing the side of the work,
It is an object of the present invention to obtain technical means capable of avoiding interference between a positioning jig and a tool with a simple operation.

[0006]

According to the present invention, there is provided a work positioning jig for a work vise, comprising: a mounting bolt 31; a sleeve 32 having a hollow hole through which the mounting bolt passes;
An arm block 33 mounted on this sleeve so as to be freely rotatable around the axis of the mounting bolt, stoppers 34 and 34 for defining a rotating end of the arm block, and an end of the arm block parallel to the axis of the mounting bolt 31. And a positioning rod 35 which is mounted to be able to move forward and backward and to be fixed.
With or without the spacer 36 attached to the side surface of the work vise 23.

According to a second aspect of the present invention, in the work positioning jig having the above structure, the nut 3 is screwed to the sleeve 32 to hold the arm block 33 between the sleeve 32 and the flange 32a of the sleeve.
7 and a detent 41 for fixing a screwing position between the nut and the sleeve, and the stoppers 34, 34 are provided on the nut 37 or the flange 32a of the sleeve.

The spacer 36 has, at one end, a threaded rod 36a identical to the mounting bolt 31, and at the other end a tap hole 36b into which the mounting bolt 31 is screwed. The positioning rod 35 is a stud screwed to the arm block 33 for practical use, and a fixing nut 38 for fixing the advance / retreat position thereof.
Is provided.

If the spacer 36 has the above-mentioned structure and the length of the screw rod 36a is the same as the length of the mounting bolt 31, the positioning jig 39 of the present invention can be mounted in multiple stages via the spacer 36. Can be. In this case, by selectively rotating the arm blocks of the positioning jigs mounted in multiple stages toward the work side, the position of the work in the direction perpendicular to the clamping can be positioned at a plurality of positions.

[0010]

The positioning jig 39 of the present invention is generally fixed to the side surface of the work vise 23 via the spacer 36. That is, a tap hole 40 is provided on the side surface of the work vise so as to be screwed with the screw of the mounting bolt.
The spacer 36 is fixed by screwing 6a. Next, the tip of the mounting bolt penetrating through the sleeve 32 is screwed into the tap hole 36b of the spacer, and the sleeve 32 is tightened with a force that does not rotate the sleeve 32. Stopper 3
The positions of the stoppers 34 are set so that the arm blocks 33 are supported by the positions where the arm blocks 33 fall on the workpiece side and the positions where the arm blocks 33 fall on the opposite side. Then, the positioning rod 35 at the tip of the arm block is moved forward and backward to set the reference position on the side of the work 5 and then the position of the positioning rod is fixed.

After the work positioning jig 39 is attached to the work vise 23 in this manner, the work 5 is fixed to the work side and the work 5 is fixed to the work claw 3 and the tip of the positioning rod 35 of the positioning jig. The movable claw 4 is advanced in a state where the movable claw 4 is in contact with the workpiece, and the workpiece is nipped. When processing the side of the work on which the positioning rod 35 abuts, the processing is performed in a state where the arm block 33 is rotated to the opposite side of the work.

[0012]

FIG. 5 is a perspective view showing an example of a work vise using a work positioning jig 39 according to the present invention. The work vise has an elongated rectangular base 2, and a guide groove 15 is provided on both side surfaces in a longitudinal direction, and a portion above the guide groove is provided with a slide guide 6 for guiding the movable tables 7 and 19. Has become. A fixed block 17 is fixed to one end of the base 2 by positioning with a key 16, and the fixed claw 3 is fixed to the fixed block. A tap hole 40 is provided on the side surface of the fixed block.

A plurality of guide holes 18 are arranged on the base 2 at regular intervals so that the center of the guide groove 15 is substantially coincident with the lower side. Each guide hole 18 reaches the inner surface of the guide groove 15, so that the portion located in the guide groove has a semicircular cross section, and the inner end has a circular cross section.

Although not shown in FIG.
Is provided with a skirt 19a extending to both sides so as to cover the guide groove 15, and a ridge fitted into the guide groove 15 is formed inside the skirt. A knock hole penetrating the skirt 19a is provided in a lower side portion of the ridge, so that the knock hole has a circular cross section at the entrance and a semicircular cross section at the upper half on the back side. In other words, when the upper half of the knocking hole of the first moving table 19 and the lower half of the knocking hole provided in the base match each other, the knocking hole of the circular cross section is formed. Becomes The first movable base 19 is fixed at a predetermined position on the base 2 by inserting a knock pin 20 into the knock hole with its knock hole aligned with one of the knock holes of the base. The first moving table 19 has the guide groove 1
A screw rod is mounted in parallel with 5 so that it cannot move in the axial direction.
The threaded portion of the threaded rod is screwed with a female screw formed on the second movable base 7. The movable claw 4 is fixed to the second movable table 7. The head of the screw rod is exposed on the back surface of the first moving table. By rotating the head 8a or the handle 8, the second moving table 7 is moved forward and backward to move the work between the fixed pawl 3 and the second moving table 7. Hold and release.

FIGS. 1 to 3 show an embodiment of the work positioning jig of the present invention used in the work vise shown in FIG. 5, and FIG. 1 shows a state where the positioning jig is attached to the work vise via a spacer. FIG. 3 is a cross-sectional view of FIG. The spacer 36 has a threaded rod 36a formed at one end of a hexagonal rod material cut to a predetermined size, and a threaded rod 36a at the other end.
And a tapped hole 36b coaxial with the screw rod 36a.
And the screw of the tap hole 40 have the same shape. The work positioning jig 39 is turned around the sleeve 32 while being loosely held between the sleeve 32 having the mounting bolt 31 and the flange 32a, the nut 37 screwed into the threaded portion 32b of the sleeve, and the flange 32a and the nut 37. Arm block 33 movably mounted
And a stud 35 screwed to the tip of the arm block 33
And a fixing nut 38 screwed to the stud.

The sleeve 32 has a hollow hole through which the mounting bolt 31 is inserted, and the tip of the mounting bolt 31 penetrating the sleeve is screwed into a tap hole 36b of a spacer. The sleeve 32 integrally includes a flange 32a, a cylindrical portion 32c that supports the arm block 33, and a screw portion 32b.
Is shorter than the thickness of the arm block 33, and the cylindrical portion 32c
The length of the arm block 33 plus the screw portion 32b is shorter than the length of the arm block 33 plus the thickness of the nut 37. The nut 37 is provided with a radial set screw 41, and stopper pins 34 are erected at two radial positions.

The arm block 33 has a cylindrical portion 32c of the sleeve.
The stopper pins 42 are fitted on the rear surface so as to be relatively rotatable. At the end of the arm block 33, a screw hole in a direction parallel to the axis of the sleeve is provided. A stud 35 having a hexagonal hole at one end is screwed into the screw hole, and a fixing nut 38 is provided.
Can fix the screwing position.

The nut 37 is attached to the sleeve 32 by the arm block 3.
3 is screwed into the threaded portion 32b of the sleeve,
The arm block 33 is lightly sandwiched between the flange 32a and the nut 37, and is tightened so that the arm block 33 can be relatively rotated without rattling and when a certain amount of force is applied. Fix with. The spacer 36 is screwed into the tap hole provided on the side of the work vise and fixed.
Next, the tip of the mounting bolt inserted into the center hole of the sleeve is screwed into the tap hole 40 of the spacer, and the sleeve 32 is fastened so as not to rotate. When performing this fastening, the nut 37
The position of the sleeve 32 in the rotational direction is determined and fixed so that the stopper pins 34, 34 provided on the arm 32 support the arm block 33 at a position rotated to the work side and a position rotated at the opposite side. In this state, the stud 35 is advanced and retracted to determine the position of the tip of the stud at a position defining the side of the work, and the rotation of the stud is fixed by the fixing nut 38.

When the work positioning jig 39 of the present invention is mounted on the work vise 23 in this manner, the side of the work is brought into contact with the tip of the stud 35 while the arm block 33 is rotated toward the work. When the work is clamped by the work vise, the work is fixed in a state where the direction of the work clamped by the vise and the direction perpendicular to the work are positioned.

FIG. 2 is a perspective view showing an embodiment in which the work positioning jig of the present invention is provided in two stages using the intermediate spacer 43. The intermediate spacer 43 is the spacer 36 described above.
But the screw rod 43a is attached to the mounting bolt 3
It has the same length as 1. Therefore, instead of using the first-stage mounting bolt, the intermediate spacer screw rod 43a
The work positioning jig 39 of the second stage is mounted, and the work positioning jig 39a of the second stage is mounted on the tip of the intermediate spacer 43 in the same manner as described above. According to such a mounting mode, the reference position of the side of the fixed workpiece can be easily changed by selectively advancing the arm blocks of the workpiece positioning jigs 39 and 39a provided in two stages to the workpiece side. be able to. This is convenient when the reference position is changed according to the length of the work, for example, when there are a long work and a short work having the same shape.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of a work positioning jig of the present invention.

FIG. 2 is a perspective view of a second embodiment.

FIG. 3 is a sectional plan view of FIG. 1;

FIG. 4 is a plan view schematically showing a state in which a work is held between work vises.

FIG. 5 is a perspective view of a work vise using the work positioning jig of the present invention.

[Explanation of symbols]

 23 Work vise 31 Mounting bolt 32 Sleeve 32a Flange 33 Arm block 34 Stopper 35 Positioning rod 37 Nut 41 Set screw

Claims (2)

[Claims] 1. A sleeve (32) provided with a hollow hole through which one mounting bolt (31) penetrates, and a positioning member (35) mounted on the sleeve so as to freely rotate around the axis of the mounting bolt. ) Provided with an arm block (33) and a stopper (34) for defining a rotating end of the arm block, and attached to a side of the work vise (23) by a mounting bolt (31). Positioning jig. 2. A sleeve which is screwed to a sleeve (32) to form a collar of the sleeve.
(32) Nut (37) for holding arm block (33)
And a detent (41) for fixing the screwed position of the nut and the sleeve, and the stopper (34, 34) is provided with the nut (37).
The work positioning jig according to claim 1, wherein the work positioning jig is provided on a collar (32a) of the sleeve.