JPS609664A - Fixing device for work - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a workpiece fixing device such as a vise for fixing field crops.

When machining or hand finishing a workpiece, it is necessary to fix the workpiece in terms of work safety and work efficiency. This workpiece is generally fixed using a vise. FIG. 1 is an example of a conventional vise used for fixing such workpieces.

In FIG. 1, the vice 10 has a main body 1 at one end of the main body 12.
A fixed jaw 14 is formed integrally with 2. A base 16 is fixedly attached to the fixed jaw 14. Further, a movable handle 18 is provided on the main body 12 so as to face the base 16. The movable jaw 18 is slidable on the main body 12, and has a spindle 20 at its rear end (the left end in FIG. 1).
is rotatably attached. This spindle 2o
A male thread 22 is threaded on the outer circumferential surface, and an operating portion 24 is formed at the rear end. A male thread 22 formed on the spindle 20 is engaged with a female thread 26 provided at the end of the main body 12 to move the movable saw 18 forward and backward relative to the fixed jaw 14. Note that the symbols 28 and 30 shown in FIG.
This is a notch for fixing with delts etc.

Fixing of the workpiece using the vise 10 is performed as follows. First, the notch 28.301Cyf bolt is inserted to fix the vise 10 on a machine tool or a workbench. next,
Grip the operation part 24 of the spindle 20 with a spanner or the like,
The moving spindle 18 is retracted from the fixed jaw 14 by rotating the spindle 2o. When the distance between the nozzle 16 and the moving saw 18 has opened to a sufficient distance to insert the workpiece, the workpiece is inserted between the nozzle 16 and the movable saw 18, and the spindle 2o is reversed. The workpiece is held and fixed between the mouthpiece 16 and the movable jaws 18 by rotating the workpiece in the direction shown in FIG.

However, in such conventional workpiece fixing devices,
When a force in the Y direction acts on a workpiece, the workpiece is likely to be displaced. That is, when a force in the X direction (a force applied to the axis of the spindle 20) is applied to the workpiece, the force is transferred to the fixed jaw 14.
Alternatively, the workpiece does not move because it is received by the moving saw 18. On the other hand, when a force in the Y direction is applied to the workpiece, the force in the Y direction must be resisted by the frictional force caused by the contact between the workpiece, the die 16, and the movable jaw 18, and the workpiece tends to move easily. Therefore, when a force in the Y direction acts on the workpiece during grinding, drilling, etc., the workpiece is displaced and tilted, making it impossible to obtain sufficient machining accuracy. In particular, when processing heavy objects, there is a risk that the heavy object held in the vise may fall off, which also poses a safety problem during work.

Furthermore, it is difficult to fix the workpiece in a predetermined position, making it impossible to improve work efficiency. In order to securely fix the workpiece, it is necessary to apply a large rotational force to the spindle 20, which requires a large amount of labor and power from the operator.

The present invention was made in order to eliminate the drawbacks of the prior art, and an object of the present invention is to provide a workpiece fixing device that can securely fix a workpiece.

The present invention fixes a pair of auxiliary shows that clamp the workpiece to one of a pair of jaws that clamps the workpiece, clamps the workpiece in two directions, and determines what kind of force is applied to the workpiece. It is constructed so that it can be securely fixed even when

A preferred embodiment of the workpiece fixing device according to the present invention will be described in detail with reference to the accompanying drawings. Note that the same reference numerals are given to the parts corresponding to the parts explained in the prior art, and the explanation thereof will be omitted.

FIG. 2 is a perspective view of a mechanical vise which is an embodiment of the workpiece fixed loading according to the present invention. In Fig. 2, vice 10
In this case, an auxiliary vise 32 is fixedly attached to the fixed jaw 14 at the base υ. This auxiliary vise 32 is fixed with gel and is detachable from the fixed jaw 14. As shown in FIG. 3, the auxiliary vice 32 has an auxiliary fixing jaw 36 attached to one end of a pace 34 by a gel 38. The hole into which the bolt 38 of the auxiliary fixing jaw 36 is inserted is a long hole, so that the auxiliary fixing jaw 36 can be moved and fixed in a direction perpendicular to the longitudinal direction of the pace 34. And, at the other end of the pace 34,
A female threaded portion 40 is provided, and a male threaded portion 43 of an auxiliary spindle 42 is screwed into this female threaded portion 40. The auxiliary spindle 42 has a distal end (the left end in FIG. 3) rotatably connected to the auxiliary moving jaw 44, and a handle 46 is rotatably attached to the rear end via a pin 48. There is. The auxiliary movable jaw 44 is slidable on the pace 34, and has a substantially semicircular cutout at the center of its rear end. Further, between the auxiliary fixed show 36 and the auxiliary movable jaw 44 of the pace 34, a protractor main body 50 is placed between the gel 52 and the auxiliary movable jaw 44.
It can be attached and detached freely. This protractor body 50
An arcuate groove 54 is formed in the auxiliary movable jaw 44, which is rotated around the bolt 52 as shown by an arrow 56.
It can be fixed by gels 52 and 58 by tilting it arbitrarily. Furthermore, the protractor main body 50 includes:
As shown in FIG. 4, a substantially T-shaped sliding groove 60 is formed perpendicular to the plane of the paper, and a T-shaped nut 62 is fitted into this sliding groove 60. The T-shaped nut 62 is fitted with a Deltro 6 for fixing the stopper 64 to the protractor main body 50.
is screwed in.

As shown in FIG. 5, a hole 68 is formed in the protractor main body 50, and a gel 70 is screwed into this hole 68. The spring 72 compressed by this del door 0 is
4 to pace 34. The pace 34 has spherical recesses 7 at 5 degree intervals around the gel 52.
6 is formed so that a steel ball 74 can be inserted therein. Further, a female threaded portion 78 is formed in the pace 34.
A bolt 80 is screwed in so that a degree scale (not shown) can be attached.

The auxiliary spindle 42 has a spherical tip 82 as shown in FIG. 6, and this tip 82 abuts a spherical washer 84 provided on the auxiliary movable jaw 44. Further, a circumferential groove 86 is formed on the circumferential surface of the tip portion 82.
The tip of a set screw 88 screwed into the auxiliary moving show 44 is fitted into the circumferential groove 86 of the auxiliary moving show 44. On the other hand, as shown in FIG. 7, the auxiliary fixed jaw 36 is provided with a substantially T-shaped sliding groove 90 perpendicular to the paper surface, and a T-shaped nut 92 is fitted into this sliding groove @COO. . A bolt 96 for attaching the stopper 94 to the auxiliary fixing jaw 36 is screwed into this T-shaped nut 92.

The operation of the embodiment configured as described above is as follows.

First, when processing the workpiece normally, the auxiliary vise 3
2, and the auxiliary vise 32 is fixed to the fixed jaw 14 of the vise 1o. Then, the handle 46 of the auxiliary vise 32 is operated to open the distance between the auxiliary fixed jaw 36 and the auxiliary movable jaw 44 to the extent that a workpiece (not shown) can fit into the gap between the two. Then, the lower end of the workpiece is maintained in contact with the stopper 94, and the handle 46 is operated again to grip the workpiece between the auxiliary fixed jaw 36 and the auxiliary movable jaw 44. Note that when the workpiece is small, the bolt 38 is loosened and the auxiliary fixed jaw 36 is moved upward in the vise 10. The clamping position of the workpiece is adjusted by loosening the seat 96 and moving the stopper 94.

After the SCV, the spindle 2 is
0 is rotated, the movable jaw 18 is advanced toward the fixed jaw 14, and the workpiece being clamped in the auxiliary vise 32 is clamped between the auxiliary vise 32 and the fixed jaw 18.

When the workpiece is fixed in vise 1o in this way,
Even if a force in the Y direction is applied to the workpiece, the auxiliary fixed jaw 36 and the auxiliary movable jaw 44 of the auxiliary vise 32 receive the force, so the workpiece does not move and is securely fixed. I can do it.

Therefore, not only can the machining accuracy of the workpiece be greatly improved, but also the workpiece can be prevented from falling off from the vise 10, improving work safety. Moreover, since the workpiece can be quickly and accurately fixed in a predetermined position, work efficiency can be improved. In addition, even if the lower end of the workpiece is larger than the upper end, the auxiliary fixed jaw 36
By moving and clamping the upper end of the workpiece, it is possible to securely fix the workpiece. In addition, since the tip end 82 of the auxiliary spindle 42 is formed into a spherical shape and comes into contact with the spherical washer 84, if the axes of the auxiliary spindle 42 and the auxiliary movable show 44 are misaligned when clamping the workpiece, However, the axes can be easily aligned,
The clamping force is transmitted evenly to the auxiliary movable jaws, and the workpiece can be reliably clamped.

On the other hand, machining in which the surfaces of the workpiece are not orthogonal, such as so-called angle cutting, is carried out as follows. first,
The protractor main body 5o is tilted at a predetermined angle with respect to the auxiliary moving jaw 44 and attached to the pace 34 of the auxiliary vise 32 with bolts 52, 58.

Then, in the same manner as described above, the workpiece is inserted between the auxiliary moving jaw 44 and the protractor main body 5o with the workpiece facing upward in FIG. Next, one flat side of the workpiece is brought into contact with the surface of the protractor main body 5o, and the lower end of the workpiece is brought into foil contact with the stopper 64. After that, the handle 46
The auxiliary movable jaw 44 is moved forward, and the workpiece is held between the auxiliary movable jaw 44 and the protractor body 50. The clamping position of the workpiece can be adjusted by moving the stopper 64 in the same manner as the stopper 94, depending on the size of the workpiece. Furthermore, this workpiece is placed in a vise as described above.
0 movable jaw 18 and auxiliary vise 32 to process the surface to be machined. At this time, since one surface of the workpiece is in contact with the surface of the protractor main body 5o, the workpiece can be fixed safely and reliably.

Therefore, it is possible to easily and quickly perform angle cutting, etc., which was difficult to perform with conventional general fixing devices.

In the above embodiment, the movable jaw 18 of the vise 10 and the auxiliary movable jaw 44 of the auxiliary vise 32 are operated by rotation of a spindle having a male screw. It may be actuated by an actuating device, a hydraulic actuating device, an electric motor, or the like.

As explained above, according to the present invention, the workpiece can be reliably fixed by attaching the pair of auxiliary jaws that clamp the workpiece to one of the pair of jaws that clamp the workpiece.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional vice, FIG. 2 is a perspective view of a vice according to an embodiment of the present invention, FIG. 3 is a front view of an embodiment of an auxiliary vice used in the embodiment of FIG. 2, and FIG. The figure is a partially cutaway side view of the auxiliary vise, Figure 5 is a sectional view taken along line V-v in Figure 3, Figure 6 is a sectional view taken along line Vl-Vl in Figure 3, The figure is a sectional view taken along the line ■-■ in FIG. 3. 10...Vise, 14...Fixed) El-118
...Moving jaw, 20...Spindle, 22...
・Male thread, 26...Female thread part, 32...Auxiliary vise, 36...Auxiliary fixing jaw, 40...Female thread part,
42...Auxiliary spindle, 43...Male thread part, 4
4...Auxiliary moving show, 50...Protractor body. Agent Tatsuyuki Unuma (and 1 other person)

Claims (1)

[Claims] In a workpiece fixing device comprising a pair of jaws that clamp a workpiece and a drive shaft that moves at least one of the pair of jaws forward and backward relative to the other, the workpiece fixing device is provided on one of opposing surfaces of the pair of jaws. A workpiece fixing device comprising: a pair of auxiliary jaws that clamp the workpiece; and a drive shaft that moves at least one of the pair of auxiliary jaws forward and backward relative to the other auxiliary jaw.