JPS639421Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a block-shaped workpiece attachment aid used when attaching a workpiece to a workpiece attachment such as a vise.

When attaching a workpiece to a vise, you must use the handle to loosen and tighten the clamping screws of the vise each time, but it is troublesome to adjust the forward and backward movement of the clamping screws by rotating the handle. It's inefficient. In this invention, a block-shaped auxiliary tool is placed together with the workpiece in the workpiece mounting opening, such as a vise, and the workpiece can be easily fixed in the mounting opening by simply expanding or contracting the width of the auxiliary tool. The purpose of the present invention is to provide an auxiliary tool for attaching a workpiece that is flexible.

An embodiment of the present invention will be described below in detail with reference to the drawings.
In Figures 1 and 2, 1 and 1a are rectangular parallelepiped-shaped blocks made of metal or synthetic resin, and both blocks 1 and 1a are originally one block with front and back sides in the center, as shown in Figure 3. A tapered female threaded hole 2 is provided through the tapered female threaded hole 2, and a plate-shaped space 3 passing through the center line C of the tapered female threaded hole 2 is cut out, and inner surfaces 3a and 3b of the notch face each other. They are arranged in pairs. 4 is the inner surface 3
a, 3b, and is located on both sides of the tapered female screw hole 2, penetrating through both blocks 1, 1a.An expansion hole 6 is formed on the block 1 side, and an expansion hole 6 is formed in the female screw hole 4. Head 5 of screwed bolt 5
a is loosely fitted into the expanded hole 6, and a coil spring 7 is compressed and interposed between the head portion 5a and the bottom of the expanded hole 6.
As a result, the inner surfaces 3a and 3b of both blocks 1 and 1a are normally urged so as to come into elastic contact with each other, and both blocks are coupled so as to be able to move away from and approach each other. As shown in FIG. 4, 8 is a tapered male screw having the same thread pitch as the tapered female screw hole 2 and screwed together with the female screw hole 2, and has a hexagonal wrench hole 9 at the top.
, and when it spirals optimally, blocks 1 and 1 are spaced apart by the width of the original plate-like space 3, as shown in FIG.
When a opens and the male screw 8 spirals upward,
As shown in FIG. 1, the inner surfaces 3a and 3b are in contact with each other so that the blocks 1 and 1a are closed.

The usage of the above-mentioned auxiliary tool will be explained using FIG.
First, the opening width of the workpiece mounting opening 10 such as a vise is set to be slightly larger than the width of the workpiece 11 and the width when both blocks 1 and 1a are closed, and then the auxiliary tool is attached to one side of the opening 10. The workpiece 11 is placed between the other inside of the opening 10 and the outside of the block 1. In this case, the pin 12 is
position. In this way, when a spanner is inserted into the spanner hole 9 and the tapered male screw 8 is screwed, both blocks 1 and 1a open outward from each other against the elasticity of the coil spring 7 due to the wedge effect. As shown in the figure, a workpiece 11 is fixed within a workpiece mounting space 10. When releasing this fixation and removing the workpiece 11, the tapered male screw 8 is screwed forward by the operation opposite to that described above. In this way, the blocks 1, 1a are closed again and the workpiece 11 can be freely removed.

In the embodiments described above, both blocks 1 and 1a are rectangular parallelepipeds of the same shape and size, but they do not have to be the same size and may have different shapes. For connecting both blocks, instead of using bolts 5 and coil springs 7, the side portions of both blocks may be elastically connected using leaf springs or the like.

Note that the fixture forming the workpiece mounting space 10 is not limited to a vise, but may be a fixture such as an integrated U-shaped frame, or may be a mounting space of an automatic machine tool. Mounting aids can be applied to all of these.

As described above, this device comprises two blocks which are connected so that they can be moved apart by cutting out a plate-shaped space passing through the centerline of the tapered male thread hole, and which have tapered female threads screwed into the tapered female thread holes. The wedge effect of the tapered male threads in the tapered female thread holes enables the two blocks to be quickly expanded in both outward directions. As a result, by placing the blocks together with the workpiece in the work mounting space, the workpiece can be attached and detached by slight rotation of the tapered male threads, and the device has the characteristic that the parts can be handled as a single block except when machining is being performed, without being separated.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway top view of an embodiment of the present invention;
Figure 2 is a front view of the same as above, Figure 3 is a top view of the same as above in an expanded state, Figure 4 is a sectional view taken along line A-A, and Figure 5 is a workpiece installation space using the same as above. FIG. In the figure, 1... rectangular parallelepiped block, 1a... rectangular block, 2... tapered female screw hole, 3...
...Plate space, 4...Female screw hole, 5...Bolt with head, 5a...Screw head, 7...Coil spring, 8...
Tapered male thread, 9...hexagon spanner hole, 10...
Workpiece installation space, 11...workpiece.

Claims (1)

[Scope of utility model registration request] Two blocks, which are cut out in a plate-like space passing through the center line of the tapered female threaded hole and are paired, are connected to each other so as to be able to move away from each other, and the tapered female threaded hole has a taper congruent with the female threaded hole. An auxiliary tool for attaching a workpiece, which is formed by screwing a tapered male thread and allowing two blocks to expand outwardly by the wedge effect caused by the threading of the tapered male thread.