Quick die changing clamp of CNC (computer numerical control) equipment

Abstract

The utility model belongs to the technical field of clamps, and provides a quick die changing clamp of CNC (computer numerical control) equipment, which comprises a workpiece clamp for fixing a workpiece and a fixing clamp, the fixing clamp comprises at least two positioning components, the workpiece clamp is provided with positioning structures corresponding to the positioning components, the positioning components are used for being embedded into the positioning structures, and the positioning components are embedded into the positioning structures. The workpiece clamp is positioned on the fixed clamp; the fixing clamp further comprises a first pressing module and a second pressing module, the first pressing module is used for pressing and fixing one side of the workpiece clamp, and the second pressing module is used for pressing and fixing the other side of the workpiece clamp. According to the utility model, the positioning assembly and the positioning structure are arranged, so that the positioning of the workpiece clamp becomes more convenient and accurate, and the first pressing module and the second pressing module are arranged to press the workpiece clamp, so that the displacement of the workpiece clamp is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamps, in particular to a quick die-changing clamp for CNC equipment. Background Art

[0002] With existing processing technology, every time a product is changed on a CNC machining center, manual fixture replacement is required. This requires six steps: 1. Manually loosen the screws and lower the fixture using a crane; 2. Clean the fixture's positioning points; 3. Manually raise the fixture using a crane and manually tighten the clamping screws; 4. Manually adjust the fixture to the desired position and place it in the positioning point; 5. Install the changed product; and 6. Manually adjust the tool's cutting position and machining program to meet the machining requirements. These six steps are extremely time-consuming.

[0003] CN202323037828.8 discloses a floating fixture that automatically enhances cutting rigidity, including a frame, a plurality of clamping components for clamping a workpiece, and a magnetic unit for adsorbing the workpiece. The magnetic units are symmetrically arranged and connected on both sides of the frame. The frame is provided with a floating unit and a clamping component. The floating unit and the clamping component are respectively arranged at both ends of the frame, and the multiple clamping components are respectively connected to the floating unit and the clamping component.

[0004] The above-mentioned technical solution also has the same problem. With this fixing method, when workers need to disassemble and replace the fixture, they need to loosen the screws connecting the frame and the workbench one by one. This has poor compatibility, and disassembly or replacement takes a long time and is inefficient. Moreover, when positioning the fixture, workers can only make visual judgments, which is prone to deviations and thus affects the quality of processing. Utility Model Content

[0005] The purpose of the present utility model is to solve the above-mentioned problems and provide a quick die-changing fixture for CNC equipment. The device makes the positioning of the workpiece fixture more convenient and accurate by setting a positioning component and a positioning structure, and a first clamping module and a second clamping die are set to clamp the workpiece fixture to avoid displacement of the workpiece fixture.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A quick die-changing fixture for CNC equipment includes a workpiece fixture for fixing a workpiece and a fixing fixture, wherein the fixing fixture includes at least two positioning components, the workpiece fixture is provided with a positioning structure corresponding to the positioning components, and the positioning components are used to be embedded in the positioning structure to position the workpiece fixture on the fixing fixture;

[0008] The fixing fixture further includes a first pressing module and a second pressing module. The first pressing module is used to press and fix one side of the workpiece fixture, and the second pressing module is used to press and fix the other side of the workpiece fixture.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] In the present invention, when positioning the workpiece fixture, workers can use the positioning component to embed it into the positioning structure to complete the fixation of the workpiece fixture. In order to avoid the workpiece fixture from being offset during the processing of the workpiece, a first clamping module and a second clamping module are set to clamp and fix the two sides of the workpiece fixture respectively. The clamping method can facilitate the replacement or disassembly of the workpiece fixture, and the worker can use the cooperation between the positioning component and the positioning structure to complete the positioning of the workpiece fixture, making it more convenient and accurate for the worker to position the workpiece fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a top view of a quick die change fixture of a CNC device in Example 1;

[0012] Figure 2 is a three-dimensional diagram of a fixing fixture of a quick die change fixture of a CNC device in Example 1;

[0013] Figure 3 1 is a top view of a workpiece fixture of a quick die change fixture of a CNC device in Example 1;

[0014] Figure 4 1. It is a bottom view of a workpiece fixture of a quick die change fixture of a CNC device according to Example 1;

[0015] Figure 5 yes Figure 2 A partial enlarged schematic diagram;

[0016] Figure 6 is a cross-sectional view of a quick die change fixture of a CNC device in Example 1;

[0017] Figure 7 yes Figure 6 A partial enlarged schematic diagram of B in the middle;

[0018] Among them, the reference numerals of each figure are:

[0019] 1. Workpiece fixture; 11. Fixed frame; 111. Base; 1111. First groove; 11111. Fixed block; 112. Clamping assembly; 12. Positioning structure; 13. Limiting unit; 131. First stop; 132. Second stop; 133. Third stop; 134. Fixed seat; 135. Connecting rod; 2. Fixing fixture; 21. Workbench; 22. Mounting seat; 221. Second groove; 222. Connecting block; 23. First clamping module; 231. First pneumatic clamp; 24. Second clamping module; 241. Second pneumatic clamp; 25. Positioning assembly. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] refer to Figures 1 to 7 A quick die-changing fixture for CNC equipment includes a workpiece fixture 1 for fixing a workpiece and a fixing fixture 2, wherein the fixing fixture 2 includes at least two positioning components 25, and the workpiece fixture 1 is provided with a positioning structure 12 corresponding to the positioning components 25. The positioning components 25 are used to be embedded in the positioning structure 12 to position the workpiece fixture 1 on the fixing fixture 2;

[0023] The fixing fixture 2 further includes a first pressing module 23 and a second pressing module 24 . The first pressing module 23 is used to press and fix one side of the workpiece fixture 1 , and the second pressing module 24 is used to press and fix the other side of the workpiece fixture 1 .

[0024] Under this design, when the workpiece needs to be processed, the workpiece is first placed on the workpiece fixture 1 for fixing, and then the workpiece fixture 1 is lifted by the crane and the workpiece fixture 1 is moved above the fixing fixture 2, and then the workpiece fixture 1 is slowly lowered, so that the positioning component 25 of the fixing fixture 2 is embedded in the positioning structure 12 of the workpiece fixture 1 to complete the positioning of the workpiece fixture 1. After completing the positioning, the first clamping module 23 and the second clamping module 24 are controlled to clamp and fix the two sides of the workpiece fixture 1 respectively to complete the positioning and fixation of the workpiece fixture 1. After completing the workpiece processing, the first clamping module 23 and the second clamping module 24 are first controlled to loosen, and then the workpiece fixture 1 is lifted by the crane; in this way, the positioning of the workpiece fixture 1 is completed by utilizing the cooperation between the positioning component 25 and the positioning structure 12, thereby reducing the error during processing, and the first clamping module 23 and the second clamping module 24 are set to complete the fixation of the workpiece fixture 1, thereby improving compatibility and improving work efficiency.

[0025] In this embodiment, the workpiece fixture 1 includes a rectangular fixed frame 11, and bases 111 are provided at the four corners of the bottom of the fixed frame 11;

[0026] The base 111 is provided with a first groove 1111 open downward, and the positioning structure 12 is located in the first groove 1111. The base 111 is used to cover the positioning assembly 25. When the base 111 covers the positioning assembly 25, the positioning assembly 25 can be embedded in the positioning structure 12.

[0027] The fixing frame 11 is provided with a clamping assembly 112 for clamping and fixing the workpiece.

[0028] The pressing assembly 112 has been disclosed in Chinese patent CN220944157U, so the structure of the pressing assembly 112 will not be described in detail in this embodiment.

[0029] Specifically, the workpiece is first clamped and fixed by the clamping assembly 112, and then the fixing frame 11 is hung above the fixing fixture 2, and the fixing frame 11 is slowly lowered. Since a downward-opening first groove 1111 is provided on the base 111, the base 111 can be covered on the positioning assembly 25, and the positioning assembly 25 can be embedded in the positioning structure 12. The base 111 can play a sealing role, reduce the entry of foreign matter into the positioning point, and eliminate the need for manual cleaning.

[0030] In this embodiment, the fixing fixture 2 also includes a workbench 21, and a mounting seat 22 corresponding to the base 111 is provided on the surface of the workbench 21. The first groove 1111 matches the shape of the mounting seat 22. The mounting seat 22 is provided with a second groove 221 open upward, and the positioning component 25 is located in the second groove 221. When the positioning component 25 is embedded in the positioning structure 12, the second groove 221 is located in the first groove 1111.

[0031] Specifically, the first groove 1111 matches the shape of the mounting seat 22. When the fixing frame 11 is lowered, the base 111 will cover the mounting seat 22, further improving the sealing effect. Moreover, the positioning component 25 located in the second groove 221 can be embedded in the positioning structure 12 to complete the positioning of the fixing frame 11.

[0032] Preferably, a fixing block 11111 is provided in the first groove 1111, a connecting block 222 is provided in the second groove 221, the positioning component 25 is diagonally arranged on the connecting block 222, and the positioning structure 12 is arranged on the fixing block 11111. When the positioning component 25 is embedded in the positioning structure 12, the connecting block 222 fits with the fixing block 11111.

[0033] Furthermore, the positioning accuracy is improved by arranging the positioning components 25 diagonally. When the positioning components 25 are embedded in the positioning structure 12, the connecting block 222 will fit with the fixing block 11111, thereby supporting the bottom of the fixing frame 11.

[0034] More preferably, the positioning assembly 25 is an insert provided on the connecting block 222, and the positioning structure 12 is a positioning groove provided on the fixing block 11111, wherein the positioning groove matches the shape of the insert. The insert is inserted into the positioning groove, thereby completing the positioning of the fixing frame 11.

[0035] Preferably, the insert may be a truncated cone structure or a stepped cone structure. The insert of the truncated cone structure or the stepped cone structure can improve the load-bearing capacity.

[0036] In practical applications, the first pressing module 23 includes a plurality of first pneumatic clamps 231 arranged at intervals along the length direction of the workbench 21;

[0037] The second pressing module 24 includes a plurality of second pneumatic clamps 241 arranged at intervals along the length direction of the workbench 21 .

[0038] Furthermore, by providing a plurality of first pneumatic clamps 231 and second pneumatic clamps 241 , the two sides of the workpiece fixture 1 are respectively pressed, thereby avoiding deviation during processing, thereby preventing the processing quality from being affected.

[0039] Preferably, the workpiece fixture 1 further comprises a limiting unit 13 provided on the fixing frame 11, and the limiting unit 13 is used to limit the two sides and ends of the workpiece. By providing the limiting unit 13, the workpiece is limited on both sides and both ends.

[0040] More preferably, the limiting unit 13 includes a first stopper 131 , a second stopper 132 , a third stopper 133 and a fixing seat 134 , which are arranged on the fixing frame 11 ;

[0041] The first abutment block 131 and the second abutment block 132 are respectively used to abut against two sides of the workpiece;

[0042] The third stop 133 and the fixing seat 134 are respectively located at two ends of the workpiece. A connecting rod 135 is threadedly connected to the fixing seat 134 . The workpiece can be brought into contact with the third stop 133 by rotating the connecting rod 135 .

[0043] Specifically, the first stop block 131 and the second stop block 132 are used to abut and limit the two sides of the workpiece to limit the workpiece in the lateral direction, and the connecting rod 135 is rotated to make the workpiece abut against the third stop block 133 to further limit the workpiece, thereby fixing the workpiece.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements or modifications can be made without departing from the principles of the present invention. These improvements or modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A quick die change fixture for CNC equipment, comprising a workpiece fixture and a fixing fixture for fixing a workpiece, characterized in that: The fixing fixture includes at least two positioning components, the workpiece fixture is provided with a positioning structure corresponding to the positioning components, and the positioning component is used to be embedded in the positioning structure to position the workpiece fixture on the fixing fixture; The fixing fixture further includes a first pressing module and a second pressing module. The first pressing module is used to press and fix one side of the workpiece fixture, and the second pressing module is used to press and fix the other side of the workpiece fixture.

2. The quick die change fixture for CNC equipment according to claim 1, characterized in that: The workpiece fixture comprises a rectangular fixed frame, and bases are provided at the four corners of the bottom of the fixed frame; The base is provided with a first groove open downward, the positioning structure is located in the first groove, and the base is used to cover the positioning component. When the base covers the positioning component, the positioning component can be embedded in the positioning structure; The fixing frame is provided with a pressing component for pressing and fixing the workpiece.

3. The quick die change fixture for CNC equipment according to claim 2, characterized in that: The fixing fixture also includes a workbench, and a mounting seat corresponding to the base is provided on the surface of the workbench. The first groove matches the shape of the mounting seat. The mounting seat is provided with a second groove open upward. The positioning component is located in the second groove. When the positioning component is embedded in the positioning structure, the second groove is located in the first groove.

4. The quick die change fixture for CNC equipment according to claim 3, characterized in that: A fixing block is provided in the first groove, a connecting block is provided in the second groove, the positioning component is arranged diagonally on the connecting block, and the positioning structure is arranged on the fixing block. When the positioning component is embedded in the positioning structure, the connecting block fits with the fixing block.

5. The quick die change fixture for CNC equipment according to claim 4, characterized in that: The positioning assembly is an insert block provided on the connecting block, and the positioning structure is a positioning groove provided on the fixing block, wherein the positioning groove matches the shape of the insert block.

6. The quick die change fixture for CNC equipment according to claim 5, characterized in that: The insert and the positioning groove may be a truncated cone structure or a stepped cone structure.

7. The quick die change fixture for CNC equipment according to claim 1, characterized in that: The first pressing module includes a plurality of first pneumatic clamps arranged at intervals along the length direction of the workbench; The second pressing module includes a plurality of second pneumatic clamps arranged at intervals along the length direction of the workbench.

8. The quick die change fixture for CNC equipment according to claim 2, characterized in that: The workpiece clamp further comprises a limiting unit arranged on the fixing frame, and the limiting unit is used to limit both sides and both ends of the workpiece.

9. The quick die change fixture for CNC equipment according to claim 8, characterized in that: The limiting unit includes a first stop block, a second stop block, a third stop block and a fixing seat arranged on the fixing frame; The first abutment block and the second abutment block are respectively used to abut against two sides of the workpiece; The third abutment block and the fixing seat are respectively located at two ends of the workpiece. A connecting rod is threadedly connected to the fixing seat, and the workpiece can be brought into contact with the third abutment block by rotating the connecting rod.

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