CN104128819A - Clamp for slow wire feeding machine tool - Google Patents

Abstract

The invention relates to a fixture used on a slow-moving wire machine tool, which includes a fixed claw and a movable claw. The fixed claw includes a support plate for supporting a workpiece, a first clamping arm arranged on the support plate, and a A fixed arm that is integrated with the holding arm. A guide groove is provided on the fixed arm. A through hole is provided on the rear side of the guide groove. A bolt is provided in the through hole. The movable claw includes the second clamping arm and the second clamping arm. Connected sliding arm, the sliding arm is inserted in the guide groove, and is connected with the bolt provided in the through hole, by rotating the bolt, the sliding arm slides in the guiding groove, and the second clamping arm approaches the first clamping arm and clamp the workpiece. Compared with the prior art, the present invention has the advantages of simple structure, convenient use, wide application range, less damage to the workpiece surface and the like.

Description

A kind of fixture used on the slow-moving wire machine tool

technical field

The invention relates to a clamp, in particular to a clamp used on a slow-moving wire machine tool.

Background technique

During the use of slow-moving wire machine tools, it is sometimes necessary to process round or similar round workpieces, so it is necessary to have a fixture that can hold such workpieces. At present, the general fixtures on the market adopt the method of direct docking of two V-shaped blocks, and use the friction force and centering force generated by the clamping force between the V-shaped blocks and the workpiece to clamp the workpiece. This kind of fixture can be used for Clamp most round or similar round workpieces, but when encountering large workpieces or workpieces with high mass, due to the large friction force required, the V-shaped block is required to exert a large force on the workpiece during the clamping process. If the clamping force is too high, it will easily cause excessive deformation or surface damage of the workpiece, which will affect the accuracy of wire cutting. At the same time, since the V-shaped block and the workpiece are in line contact and the contact area is small, the friction between the V-shaped block and the workpiece can only be provided by increasing the clamping force, which will also shorten the life of the fixture.

Chinese patent CN202398915U discloses a fixture for slow wire cutting machine, including: a side part of the fixture connected with the machine tool workbench; two positioning holes are set on the side part; and a workpiece placement platform is also included The other part of the fixture; 4 fasteners are placed on the four corners of the other side part of the fixture; a hexagon socket screw is placed on the side of each fastener; the hexagon socket Screw fastening said workpiece. This patent solves the problem of clamping, but the structure of the clamp is relatively complicated and the scope of use is relatively narrow.

Contents of the invention

The object of the present invention is to provide a fixture for slow wire-feeding machine tools with simple structure, convenient use and wide application range in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

A clamp used on a slow wire walking machine tool, comprising a fixed claw and a movable claw, the fixed claw includes a support plate for supporting a workpiece, a first clamping arm arranged on the support plate, and a first clamping arm A fixed arm integrated with the holding arm, the fixed arm is provided with a guide groove, the rear side of the guide groove is provided with a through hole, the through hole is provided with a bolt, and the movable claw includes the second clamping arm and The sliding arm connected with the second clamping arm is inserted in the guide groove and connected with the bolt provided in the through hole. By rotating the bolt, the sliding arm slides in the guide groove, so that the second clamping arm Approach and clamp the workpiece to the first clamping arm. The guide groove supports and guides the sliding arm.

Bolt holes threaded with bolts are opened in the sliding arm.

The first clamping arm is vertically connected to the fixed arm, and the second clamping arm is vertically connected to the sliding arm.

The inner sides of the first clamping arm and the second clamping arm are fixed with flexible gaskets by screws, and the flexible gaskets can increase frictional force and reduce workpiece damage.

The flexible gasket is a rubber gasket.

The inner sides of the first clamping arm and the second clamping arm are both opened as two connected planes, and the angle between the two planes is between 90° and 180°.

One corner of the support plate is set in an arc shape.

The fixing arm is provided with a mounting hole for fixing the fixing claw on the workbench of the wire-feeding machine tool.

When using this fixture to clamp the workpiece, first place the workpiece on the support plate of the fixed claw, and then slowly rotate the bolt to move the second clamping arm to the first clamping arm until the second clamping arm is in contact with the first clamping arm. Clamp and center the workpiece. The fixture can clamp workpieces with a diameter of 100-135mm.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

(1) When clamping a workpiece with a large mass, because of the support force of the support plate, it does not require a large clamping force to clamp the workpiece, which reduces unnecessary surface damage and overshooting of the workpiece to a certain extent. Great deformation.

(2) Since the inner sides of the first clamping arm and the second clamping arm are provided with flexible gaskets, the contact between the first clamping arm and the second clamping arm and the workpiece is surface contact, and the clamping force is small Larger friction force can be generated, and the deformation of the workpiece is smaller. In addition, because it is not in rigid contact, the surface damage of the workpiece is also smaller.

(3) The fixture of the present invention is simple in structure and easy to use, and is suitable for clamping workpieces with a diameter of 100-135 mm.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the front structure of the fixed claw;

Fig. 3 is a side view structural schematic diagram of a fixed claw;

Fig. 4 is a schematic diagram of the front view structure of the movable claw;

Fig. 5 is a schematic view of the structure of the movable claw viewed from above.

In the figure: 1 is the fixed claw, 11 is the support plate, 12 is the guide groove, 13 is the fixed arm, 14 is the installation hole, 15 is the through hole, 16 is the screw hole, 17 is the first clamping arm, 2 is the movable claw , 21 is the second clamping arm, 22 is the sliding arm, 23 is the bolt hole, 3 is the bolt.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

A clamp used on a slow-moving wire machine tool, as shown in FIG. 1 , includes a fixed claw 1 and a movable claw 2 . As shown in Fig. 2 and Fig. 3, the fixed claw 1 includes a support plate 11 for supporting the workpiece, a first clamping arm 17 arranged on the support plate 11, and an integrally arranged clamping arm 17 with the first clamping arm 17. The fixed arm 13 is provided with a guide groove 12, and a through hole 15 is arranged on the rear side of the guide groove 12, and a bolt 3 is arranged in the through hole 15. The structure of the movable claw 2 is shown in Figure 4 and Figure 5, the movable claw 2 includes a second clamping arm 21 and a sliding arm 22 connected with the second clamping arm 21, the sliding arm 22 is inserted in the guide groove 12, and It is connected with the bolt 3 arranged in the through hole 15, and the bolt hole 23 threadedly connected with the bolt 3 is opened in the sliding arm 22. By rotating the bolt 3, the sliding arm 22 slides in the guide groove 12, so that the second clamping arm 21 approaches and clamps the workpiece toward the first clamping arm 17. The guide groove 12 supports and guides the sliding arm 22 .

Wherein, the first clamping arm 17 is vertically connected to the fixed arm 13 , and the second clamping arm 21 is vertically connected to the sliding arm 22 . The inner side of the first clamping arm 17 and the second clamping arm 21 is provided with a screw hole 16, and the flexible gasket is fixed on the inner side of the first clamping arm 17 and the second clamping arm 21 through the cooperation of the screw and the screw hole 16 , The flexible gasket plays the role of increasing friction and reducing workpiece damage. The flexible gasket can be a rubber gasket. The inner sides of the first clamping arm 17 and the second clamping arm 21 are both opened as two connected planes, and the angle between the two planes is between 90° and 180°. One corner of the support plate 11 is set in an arc shape. The fixing arm 13 is provided with a mounting hole 14 for fixing the fixing claw 1 on the workbench of the wire-feeding machine tool.

When using this fixture to clamp a workpiece, first place the workpiece on the support plate 11 of the fixed jaw 1, then slowly rotate the bolt 3 to move the second clamping arm 21 to the first clamping arm 17 until the second clamping arm 21 Clamp and center the workpiece with the first clamping arm 17 . The fixture can clamp workpieces with a diameter of 100-135mm.

Claims (8)

1. A clamp used on a slow wire walking machine tool, characterized in that it includes a fixed claw and a movable claw, and the fixed claw includes a support plate for supporting the workpiece, a first clamping arm on the support plate , and a fixed arm integrally arranged with the first clamping arm, the fixed arm is provided with a guide groove, the rear side of the guide groove is provided with a through hole, the through hole is provided with a bolt, and the movable claw includes The second clamping arm and the sliding arm connected with the second clamping arm, the sliding arm is inserted in the guide groove, and connected with the bolt arranged in the through hole, by rotating the bolt, the sliding arm slides in the guide groove, The second clamping arm approaches the first clamping arm and clamps the workpiece. 2. A fixture for a slow-moving wire-traveling machine tool according to claim 1, wherein a bolt hole threaded with a bolt is opened in the sliding arm. 3. A clamp for slow wire walking machine tools according to claim 1, characterized in that, the first clamping arm is vertically connected to the fixed arm, and the second clamping arm is connected to the fixed arm The sliding arms are connected vertically. 4. A fixture for a slow wire walking machine tool according to claim 1, characterized in that the inner sides of the first clamping arm and the second clamping arm are fixed with flexible gaskets by screws. 5. A fixture for slow wire walking machine tools according to claim 4, characterized in that the flexible gasket is a rubber gasket. 6. A fixture for slow wire walking machine tools according to claim 1, characterized in that, the inner sides of the first clamping arm and the second clamping arm are opened as two connected planes, The angle between the two planes is between 90° and 180°. 7. A fixture for a slow-moving wire-traveling machine tool according to claim 1, wherein one corner of the support plate is set in an arc shape. 8. A fixture for a slow wire-moving machine tool according to claim 1, wherein the fixing arm is provided with a mounting hole for fixing the fixing claw on the workbench of the slow-moving wire-walking machine tool.