JPH0525816Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a vise device such as a cutting machine or a corner chisel.

(Prior Art) Conventionally, various types of vise devices have been proposed for quickly and easily tightening a workpiece. An example of this is disclosed in Japanese Utility Model Application Publication No. 57-189775.

However, this device has a complicated locking member that engages with the vice shaft and its surrounding structure, and has a large number of parts. Therefore, there is a problem that the assembly work is not easy and the manufacturing cost is high.

(Technical Problems to be Solved) Therefore, the technical problems to be solved in this invention are to simplify the structure and improve the workability of assembly.

(Means for Achieving the Problem) The means for achieving the above problem is a vise device such as a cutting machine that clamps and fixes the workpiece in a fixed position. a vice screw having a screw shaft portion and a vice plate at its tip; a screw guide fixed on the base into which the screw shaft portion is loosely inserted; and a screw guide having a larger diameter than the vice screw and having a screw shaft portion a vise nut having screw holes of equal pitch to the screw pitch and inserted into the screw shaft; It is configured to be switchable between a position that allows free movement in the axial direction of the vise screw and a position that allows the screw shaft of the vise screw to engage with the screw of the screw hole and allow the vise screw to screw forward and backward. This is what is being done.

(Function) Therefore, according to the above configuration, when the vise nut is not engaged with the vise screw, the vise screw can be quickly axially displaced, and the workpiece can be fixed between the vise and the vise plate. Loosely sandwich it between the After this, when the vise nut is reversed, the vise nut is prevented from rotating by the cam action of the cam surface and engages with the vise screw, so the workpiece can be firmly tightened by the screw operation of the vise screw. .

(Example) Hereinafter, an example embodying the present invention will be described in detail with reference to the drawings.

In the drawings, reference numeral 1 denotes a base, and a fixing vise 2 is provided at the center of the upper surface of the base. This fixed vice 2 has one edge bent at a substantially right angle to form a vice surface 2a. In addition, the entire structure can be rotated on the base 1 using support bolts 3.
In order to guide the rotational movement, a long hole 4 is formed over a predetermined range, into which a guide bolt 5 attached to the base 1 is inserted so as to be relatively movable.

On the other hand, a screw guide 6 is fixed to the upper edge of the base 1 shown in FIG. 1 by tightening screws. As shown in FIG. 2, the screw guide 6 has a pair of bearing pieces 8 and
8 are formed facing each other. Further, an insertion hole 9 coaxially passes through both bearing pieces 8, 8, and a threaded shaft portion 10a of a vice screw 10 is loosely inserted therein so as to be movable in the axial direction.

The vice screw 10 has a handle 11 for operation at one end, and a vice plate 12 having a vice surface 12a for clamping a work (not shown) between it and the vice surface 2a of the stationary vise 2 is attached to the other end. There is. That is, it is attached to the vise plate 12 by inserting the attachment pin 13 into the screw shaft portion 10a. The lower end side of the mounting pin 13 is attached to the screw shaft portion 1 in the base 1.
The screw guide 6 is displaceably inserted into a guide groove 14 recessed in parallel at a position substantially directly below the screw guide 6 to guide movement of the screw guide 6 in the axial direction.

A vice nut 15 is interposed between both bearing pieces 8, 8 of the screw guide 6. The screw shaft portion 1 of the vise screw 10 is attached to the vise nut 15.
A screw hole 16 through which Oa can be inserted passes through it. This screw hole 16 is a female thread having an inner diameter (mountain diameter) larger than the outer diameter of the male thread of the screw shaft portion 10a,
It is also formed at the same pitch as the screw shaft portion 10a.

On the other hand, approximately half of the outer peripheral surface of the vise nut 15 is a mountain-shaped operating piece 17, and the other half is a cam surface 18 that slides into contact with the mounting piece 7 of the screw guide 6. . As shown in FIG. 3, this cam surface 18 has a free position where the screw shaft portion 10a and the screw hole 16 are concentrically aligned, and a fourth position.
As shown in the figure, two positions are set, including a meshing position where the lower surface side of the screw shaft portion 10a meshes. That is, the wall thickness of the vise nut 15 on the grounding side in the free position is set to be thinner than the wall thickness on the installation side in the meshing position. Flat surfaces 19a and 19b are formed in portions corresponding to these two positions, respectively.

The vice device of this example is formed as described above. When tightening and fixing a workpiece, first place the vise nut 15 in the free position shown in FIG. 3. In this position, as described above, the screw shaft portion 10a and the screw hole 16 are aligned, so when the operating handle 11 is pushed, the vice screw 10 is pushed out as is. In this case, since the mounting pin 13 moves along the guide groove 14, the axial movement of the vice screw 10 is guided. In this way, the workpiece is held loosely between the stationary vice 2 and both vice surfaces 2a, 12a of the vice plate 12. Note that by loosening the guide bolt 5 of the fixed vise 2 and rotating the vise 2 appropriately to match the shape of the work, it is possible to handle workpieces of various shapes.

After doing the above, tighten the vise nut 15.
It is turned 180 degrees and angularly displaced to the meshing position shown in Fig. 4. Along with this, the hole position of the screw hole 16 is displaced upward by the action of the cam surface 18, so that the screw of the screw hole 16 and the lower part of the screw shaft portion 10a mesh with each other with the pitches aligned. Therefore, if the operating handle 11 is rotated in this state,
Since the flat surface 19b of the vise nut 15 comes into contact with the mounting piece 17 and is prevented from rotating as a whole, the vise screw 10 screws and moves forward in the axial direction. As a result, the workpiece is
It is firmly tightened at a and 12a.

In this way, the vise device of this example has the vise nut 1
Since it is possible to engage the vise screw 10 only by reversing the workpiece 5, there is no need to turn the vise screw 10 many times when tightening and releasing the workpiece, and the work can be done quickly and easily. .

(Effects of the Invention) According to the vice device of the present invention, the number of parts is small and the structure is simplified, so that manufacturing costs can be reduced. In addition, it is easy to handle,
It can also be expected to improve the efficiency of assembly work. especially,
In the present invention, the screw hole of the vise nut is formed to have a larger diameter than the vise screw and at the same pitch as the thread pitch of the screw shaft, so that the screw hole and the screw shaft of the vise screw are connected to each other. A position where the vise screw is aligned concentrically and allows free movement in the axial direction, and a threaded shaft portion of the vise screw is engaged with the screw of the screw hole to allow the vise screw to screw forward and backward. This makes it possible to switch between the two positions, and the switching operation, as well as the tightening and release operations for the work as a vise device that accompany the switching operation, can be performed extremely smoothly and reliably.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the vise device of this example, Figure 2 is a plan view showing the vise device of this example;
The figure is a perspective view of the vise nut and the screw guide, and FIGS. 3 and 4 are sectional views for explaining the operation of the vise nut, respectively. 1...Base, 2...Fixed vise, 6...Screw guide, 10...Vise screw, 10
a...Screw shaft portion, 12...Vise plate, 16
...Screw hole, 18...Cam surface.

Claims (1)

[Scope of utility model registration request] A vise device such as a cutting machine that clamps and fixes a workpiece in position, comprising a fixed vise fixed to a base, a vise screw having a screw shaft portion and a vise plate facing the fixed vise at its tip; a screw guide fixed on a base and into which the screw shaft is loosely inserted; and a screw guide having a screw hole having a diameter larger than the vice screw and having the same pitch as the screw pitch of the screw shaft, and the screw guide is inserted into the screw shaft. and a vise nut, the vise nut having a position where the screw hole thereof and the screw shaft of the vise screw are concentrically aligned to allow free movement of the vise screw in the axial direction, and a screw of the screw hole. A vise device characterized in that it is configured to be able to be switched to a position in which a threaded shaft portion of a vise screw is engaged and the vise screw is allowed to be screwed forward and backward.