Auxiliary tool for clamping tool

Abstract

The utility model discloses an auxiliary tool for a clamping tool. The auxiliary tool comprises a positioning plate, a bolt and a base plate, the positioning plate is of a plate-shaped structure of a cuboid structure, the upper surface of the positioning plate is used for fixing a workpiece, and a step tangent to the workpiece in appearance is arranged on the positioning plate to limit longitudinal movement of the workpiece. A hole is formed in the positioning plate and is in close fit with a cylindrical protrusion at the head of a workpiece, the hole formed in the positioning plate is in clearance fit with a hole formed in the workpiece, the workpiece is limited to move in the vertical direction, and positioning of the workpiece on the positioning plate is achieved. According to the tool, the clamping and positioning precision of the workpieces can be ensured without aligning the batch of the parts. According to the utility model, not only can the machined workpiece be accurately positioned and errors in the machining process be reduced, but also the idle time and other auxiliary time of a machine tool can be reduced, the production cost is reduced, and meanwhile, the rejection rate caused by improper positioning or clamping is reduced. The device can be quickly adjusted and replaced, and the production flexibility is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of part positioning, and particularly relates to an auxiliary tool for a clamping fixture. Background Technique

[0002] Due to the tight production tasks and large batch sizes. For some workpieces with thin thickness and complex shapes, during the processing, the workpieces may fly out due to insecure clamping, causing personal injuries. As shown in the appendix Figure 4 When processing, it is necessary to position each surface one by one before processing. Due to its complex shape, in order to meet the processing accuracy, it takes a lot of time to align and position the clamping for each surface, resulting in very low work efficiency during processing and unable to meet the progress requirements of batch processing.

[0003] There is a protrusion at the head of the workpiece, and the tail is triangular. The workpiece is thin in the thickness direction, and both symmetrical surfaces need to be processed. As shown in the appendix Figure 1 For the shown part, it is necessary to first mill out the cylindrical protrusion at the head of the workpiece with a CNC milling machine, and then turn the workpiece over to process surfaces A, B, and C of the workpiece. When processing surfaces A, B, and C of the workpiece, due to the thin thickness in the thickness direction, during the processing, if the clamping is not firm, the workpiece is likely to fly out and cause personal injuries. This workpiece is first processed to the initial state by a CNC milling machine as shown in the appendix Figure 1 shown. Content of the Utility Model

[0004] The utility model provides an auxiliary tool for a clamping fixture, and the technical problem to be solved is: to solve the problem that for some workpieces with thin thickness and complex shapes, during the processing, the workpieces fly out due to insecure clamping, causing personal injuries.

[0005] To solve the above technical problems, the utility model provides an auxiliary tool for a clamping fixture, which is characterized in that: it includes a positioning plate 1 and a backing plate 4; the positioning plate is a plate-shaped structure, the upper surface of the positioning plate is used to fix the workpiece, the positioning plate is provided with a step tangent to the outer shape of the workpiece to limit the longitudinal movement of the workpiece; a hole is opened on the positioning plate, which is closely matched with the cylindrical protrusion at the head of the workpiece to limit the vertical movement of the workpiece; the backing plate is arranged between the workpiece and the positioning plate.

[0006] A through hole is provided at the center of the cylindrical protrusion at the head of the workpiece.

[0007] Beneficial Effects: The utility model can not only achieve precise positioning of the processed workpiece, reduce errors during the processing, but also reduce the idle time and other auxiliary times of the machine tool, reduce production costs, and at the same time reduce the rejection rate caused by improper positioning or clamping. It can be quickly adjusted and replaced, enhancing the flexibility of production, extending the service life of the equipment, improving the competitiveness of the enterprise, reducing costs, ensuring production safety, and providing strong support for the development of the enterprise. Description of the Drawings

[0008] Figure 1 , Figure 7 They are the workpiece structure diagram and the main view respectively.

[0009] Figure 2 Positioning plate structure diagram

[0010] Figure 3 Workpiece initial state

[0011] Figure 4 , Figure 8 They are the structural diagram and main view of the surface of the workpiece that needs to be machined.

[0012] Figure 5 Schematic diagram of clamping workpiece A, B, C surfaces

[0013] Figure 6 , Figure 9 The structural diagram and main view of an efficient clamping tool are

[0014] Figure numerals: 1-positioning plate; 2-workpiece; 3-bolt; 4-shim plate. DETAILED DESCRIPTION

[0015] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below.

[0016] The utility model provides a clamping tool auxiliary tool, comprising: a positioning plate 1, a bolt 3, and a pad 4;

[0017] The positioning plate is a rectangular plate structure. The upper surface of the positioning plate is used to fix the workpiece. The positioning plate is provided with a step tangent to the shape of the workpiece to limit the longitudinal movement of the workpiece. The positioning plate has a hole that fits tightly with the cylindrical protrusion on the head of the workpiece to limit the vertical movement of the workpiece and realize the positioning of the workpiece on the positioning plate. This tooling can ensure the clamping and positioning accuracy of the workpiece without alignment for batches of such parts.

[0018] The workpiece is a part with a complex shape. The head has a boss and a symmetrical cylindrical protrusion, and the tail is a plate-like triangular shape. Both the front and back sides need to be processed. See the attached Figure 3 .

[0019] The number of bolts can be adjusted at any time. It is a columnar thread structure. Through the pad, bolts and workbench, it is closely matched with the workpiece to achieve the positioning of the workpiece in the Y direction.

[0020] The pad is set between the workpiece and the positioning plate, and the number can be adjusted at any time. The pad is a plate-like structure with a center hole in the middle. The center hole cooperates with the bolt to press the workpiece to achieve positioning of the workpiece in the Y direction.

[0021] The connection relationship of the above-mentioned components is as follows:

[0022] Take the Figure 5 processing of the ABC surface as an example: The bolt is matched with the workbench, the lower surface of the bottom of the positioning plate is matched with the upper surface of the vise, a special U-shaped backing plate in the numerical control equipment is used to fasten with the bolt, and the workpiece and the positioning plate are locked on the workbench through the bolt and the backing plate, so as to realize the positioning of the processed part in the Y direction. The triangular-shaped outer processing surface at the tail of the workpiece is tangent to the step on the upper surface of the positioning plate to realize its positioning in the XZ direction; the backing plate is matched with the bolt, and the processed part is closely attached to the positioning plate. The processing of the ABC surface is realized by turning over and clamping.

[0023] Processing process: First, the workpiece is processed to the initial state of the part by a numerical control milling machine (as shown in the Figure 3 attachment). For the part shown in the Figure 4 attachment, the numerical control milling machine needs to first mill out the cylindrical protrusion at the head, and then process the triangular step shape at the tail (as shown in the Figure 5 attachment). The step on the upper surface of the positioning plate fixes the part surface to realize its positioning in the XZ direction. Then, the backing plate is placed under the workpiece and pressed tightly with bolts; the side of the positioning plate is matched with the vise of the numerical control milling machine to be clamped tightly to realize its positioning in the Y direction, and the A, B, and C surfaces of the workpiece are processed.

[0024] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A clamping tool auxiliary tool, characterized in that: It includes a positioning plate and a pad; the positioning plate is a plate-like structure, the upper surface of the positioning plate is used to fix the workpiece, and the positioning plate is provided with a step tangent to the shape of the workpiece to limit the longitudinal movement of the workpiece; a hole is opened on the positioning plate, which fits tightly with the cylindrical protrusion on the head of the workpiece to limit the vertical movement of the workpiece; the pad is arranged between the workpiece and the positioning plate.

2. A clamping tool auxiliary tool according to claim 1, characterized in that: The positioning plate is a rectangular parallelepiped structure.

3. A clamping tool auxiliary tool according to claim 1, characterized in that: The workpiece head has a boss and a symmetrical cylindrical protrusion, the tail is a plate-like triangular shape and both the front and back sides need to be processed.

4. The clamping tool auxiliary tool according to claim 1, characterized in that: The pad is a plate-like structure with a center hole in the middle.

5. A clamping tool auxiliary tool according to claim 4, characterized in that: The backing plate cooperates with the bolt through the center hole.

6. The clamping tool auxiliary tool according to claim 1, characterized in that: The lower surface of the bottom of the positioning plate matches with the upper surface of the flat-nose pliers and is fixed on the workbench.

7. The clamping tool auxiliary tool according to claim 3, characterized in that: The triangular-shaped machining surface at the tail of the workpiece is tangent to the step on the upper surface of the positioning plate.

8. The clamping tool auxiliary tool according to claim 1, characterized in that: The positioning plate is fixed to the workbench by bolts.

9. The clamping tool auxiliary tool according to claim 1, characterized in that: A through hole is arranged at the center of the cylindrical protrusion on the workpiece head.

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