Workpiece clamp tool for numerical control lathe

Abstract

The utility model relates to numerical control lathe technical field, concretely is a kind of workpiece clamp frock for numerical control lathe, include: claw disc main body, claw disc main body is equidistantly driven and is moved and is provided with dog, dog side wall is fixedly provided with installation platform, dog head is set on installation platform by connecting assembly and fixed component;By poking moving block so that limit plate moves and compresses spring, until after the insertion post is retracted into square groove, the T-shaped block of dog head back is inserted into T-shaped slot, spring reset pushes limit plate to move so that the insertion post is inserted into the position of T-shaped block fixed in insertion slot, after rotating positioning turnplate and make it be clamped into the positioning slot on moving block, rotate knob bolt and make its end limit post be inserted into limit slot and limit positioning turnplate, complete dog head fixed setting on dog, simple and quick operation, without the aid of auxiliary tool, improve the replacement rate of dog head to adapt to hold different size circular workpiece, avoid affecting numerical control lathe processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, specifically to a workpiece fixture for a CNC lathe. Background Technology

[0002] Chinese patent document CN214867334U discloses a tooling fixture for a CNC lathe, including a three-jaw chuck and an ejector pin. The ejector pin is located on the right side of the three-jaw chuck. Three jaws are arranged in a ring at equal intervals on the right side of the three-jaw chuck. The three-jaw chuck has three parallel side rails corresponding to the jaws. Three grooves communicating with and parallel to the side rails are opened on the right side of the three-jaw chuck. The lower ends of the jaws are embedded in the grooves. A limiting block is provided at the lower end of the jaw, the width of which is greater than the width of the jaw. The limiting block is slidably connected to the side rails. The three grooves and side rails all extend towards the center of the three-jaw chuck and communicate at the center. The three-jaw chuck has three power components corresponding to the jaws, which are used to move the jaws closer to or away from the center of the three-jaw chuck. This invention effectively ensures that both ends of the workpiece are on the same horizontal line, effectively enhancing the accuracy of workpiece machining.

[0003] However, in the above-mentioned solutions and existing technologies, when CNC lathes process circular workpieces, they usually use a chuck to clamp the circular workpiece. Therefore, the ends of the chuck heads on the chuck must be arc-shaped and fit the circular workpiece to avoid scratching it. When processing circular workpieces of different sizes, it is necessary to replace the appropriate chuck heads. The existing chuck heads are usually fixed on the chucks on the chuck with screws tightened by auxiliary tools. The replacement of chuck heads is cumbersome and time-consuming, which affects the processing efficiency of CNC lathes and needs to be improved and optimized. Utility Model Content

[0004] The purpose of this utility model is to provide a workpiece fixture for CNC lathes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a workpiece fixture for a CNC lathe, comprising: The claw disk body has equidistant driving claws on the claw disk body, and a mounting platform is fixedly installed on the side wall of the claws. The claw head has an arc groove at its end and anti-slip ridges fixedly installed inside the arc groove. A T-shaped block is fixedly installed on the back of the claw head. The claw head is mounted on the mounting platform through a connecting component and a fixing component.

[0006] Preferably, the slots in the connecting assembly are symmetrically opened on the side wall of the T-shaped block, the T-shaped groove is opened on the side wall of the mounting platform, the claw head engages with the mounting platform, the T-shaped block is inserted into the T-shaped groove, and a square groove is opened inside the mounting platform.

[0007] Preferably, a limiting plate is movably engaged within the square groove, and an insertion post is fixedly installed on the side wall of the limiting plate. The insertion post passes through the T-shaped groove and is inserted into the slot. A connecting rod is fixedly installed on the side wall of the limiting plate.

[0008] Preferably, the connecting rod is sleeved with a spring, and the two ends of the spring are respectively engaged with the limiting plate and the inner wall of the square groove. The end of the connecting rod is fixedly mounted with a moving block through the mounting platform, and the moving block is provided with a positioning groove.

[0009] Preferably, the positioning rotating plate in the fixing assembly is rotatably mounted on the side wall of the claw via a rotating shaft, and the positioning rotating plate is engaged with the positioning groove.

[0010] Preferably, a knob bolt is threadedly connected to the side wall of the positioning plate, and a limit post is fixedly provided at the end of the knob bolt. A limit groove is opened on the side wall of the mounting platform, and the limit post is inserted into the limit groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By moving the movable block, the limiting plate moves and compresses the spring until the insert retracts into the square groove. Then, the T-shaped block on the back of the chuck head is inserted into the T-groove. The spring returns to its original position, pushing the limiting plate to move so that the insert is inserted into the slot and the T-shaped block is fixed in place. After rotating the positioning plate so that it is engaged in the positioning groove on the movable block, the knob bolt is turned so that the limiting post at the end is inserted into the limiting groove to limit the positioning plate. This completes the fixing of the chuck head on the chuck. The operation is simple and quick, without the need for auxiliary tools, which improves the chuck head replacement rate to accommodate round workpieces of different sizes and avoids affecting the machining efficiency of CNC lathes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the mounting platform structure of this utility model; Figure 3 This is a schematic diagram of the claw head structure of this utility model; Figure 4 This is a half-sectional view of the mounting platform structure of this utility model.

[0013] In the diagram: 1. Claw plate body; 2. Claw; 3. Mounting platform; 4. Claw head; 5. T-block; 6. Slot; 7. T-groove; 8. Square groove; 9. Limiting plate; 10. Insert post; 11. Connecting rod; 12. Spring; 13. Moving block; 14. Positioning groove; 15. Positioning rotating plate; 16. Rotating shaft; 17. Knob bolt; 18. Limiting post; 19. Limiting groove. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] Please see Figures 1-4 The present invention provides the following two preferred embodiments: Example 1: A workpiece fixture for a CNC lathe includes: a jaw disc body 1, on which jaws 2 are equidistantly driven to move, and a mounting platform 3 is fixedly mounted on the side wall of the jaws 2; jaw heads 4, the ends of which are formed by arc grooves and anti-slip ridges are fixedly provided within the arc grooves, and T-shaped blocks 5 are fixedly mounted on the back of the jaw heads 4; the jaw heads 4 are mounted on the mounting platform 3 via connecting components and fixing components; slots 6 in the connecting components are symmetrically opened on the side wall of the T-shaped blocks 5, and T-shaped grooves 7 are opened on the side wall of the mounting platform 3; the jaws... The head 4 is snapped into the mounting platform 3, the T-shaped block 5 is inserted into the T-shaped groove 7, and the mounting platform 3 has a square groove 8. A limiting plate 9 is movably snapped into the square groove 8, and a pin 10 is fixedly installed on the side wall of the limiting plate 9. The pin 10 passes through the T-shaped groove 7 and is inserted into the slot 6. A connecting rod 11 is fixedly installed on the side wall of the limiting plate 9. A spring 12 is sleeved on the connecting rod 11. The two ends of the spring 12 are snapped into the limiting plate 9 and the inner wall of the square groove 8, respectively. A moving block 13 is fixedly installed through the mounting platform 3 at the end of the connecting rod 11. A positioning groove 14 is provided on the moving block 13.

[0016] In use, the positioning groove 14 is used to move the moving block 13, causing the limiting plate 9 to move and compress the spring 12 until the insert post 10 retracts into the square groove 8. Then, the T-shaped block 5 on the back of the chuck head 4 is inserted into the T-shaped groove 7. After that, the moving block 13 is released, the spring 12 returns to its original position, and pushes the limiting plate 9 to move, so that the insert post 10 is inserted into the slot 6 to fix the position of the T-shaped block 5. After fixing the position of the moving block 13, the chuck head 4 is fixedly set on the chuck 2. The chuck disc body 1 on the CNC lathe drives the chuck 2 to move, so that the chuck head 4 clamps the round workpiece for processing. The operation is simple and quick, without the need for auxiliary tools, which improves the replacement rate of the chuck head 4 to adapt to clamping round workpieces of different sizes and avoids affecting the processing efficiency of the CNC lathe.

[0017] Example 2: Based on Example 1, the positioning rotating plate 15 in the fixing assembly is rotatably mounted on the side wall of the claw 2 via the rotating shaft 16, and the positioning rotating plate 15 is engaged with the positioning groove 14; a knob bolt 17 is threadedly connected to the side wall of the positioning rotating plate 15, and a limit post 18 is fixedly provided at the end of the knob bolt 17. The limit groove 19 is opened on the side wall of the mounting platform 3, and the limit post 18 is inserted into the limit groove 19.

[0018] In use, the spring 12 resets and pushes the limiting plate 9 to move, so that the insert post 10 is inserted into the slot 6 and the position of the T-shaped block 5 is fixed. Then, the moving block 13 is engaged with the side wall of the mounting platform 3. After that, the positioning plate 15 is rotated to engage with the positioning groove 14 on the moving block 13. Then, the knob bolt 17 is rotated to insert the limiting post 18 at its end into the limiting groove 19 to limit the positioning plate 15, so that the position of the moving block 13 is fixed and the insert post 10 is prevented from separating from the slot 6. This ensures the fixed installation of the claw head 4. The operation is time-saving and does not require auxiliary tools, so as to achieve quick replacement of the claw head 4.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A workpiece fixture for a CNC lathe, characterized in that: include: The claw plate body (1) has a claw (2) that is driven to move at equal intervals on the claw plate body (1), and a mounting platform (3) is fixedly installed on the side wall of the claw (2). The claw head (4) has an arc groove at its end and anti-slip ridges are fixedly provided in the arc groove. A T-shaped block (5) is fixedly provided on the back of the claw head (4). The claw head (4) is set on the mounting platform (3) through the connecting component and the fixing component.

2. The workpiece fixture for a CNC lathe according to claim 1, characterized in that: The slots (6) in the connecting assembly are symmetrically opened on the side wall of the T-shaped block (5), the T-shaped groove (7) is opened on the side wall of the mounting platform (3), the claw head (4) is engaged with the mounting platform (3), the T-shaped block (5) is inserted into the T-shaped groove (7), and a square groove (8) is opened in the mounting platform (3).

3. The workpiece fixture for a CNC lathe according to claim 2, characterized in that: A limiting plate (9) is provided in the square groove (8) and a pin (10) is fixedly provided on the side wall of the limiting plate (9). The pin (10) passes through the T-shaped groove (7) and is inserted into the slot (6). A connecting rod (11) is fixedly provided on the side wall of the limiting plate (9).

4. The workpiece fixture for a CNC lathe according to claim 3, characterized in that: The connecting rod (11) is fitted with a spring (12), and the two ends of the spring (12) are respectively engaged with the inner wall of the limiting plate (9) and the square groove (8). The end of the connecting rod (11) passes through the mounting platform (3) and is fixedly fitted with a moving block (13), and the moving block (13) is provided with a positioning groove (14).

5. A workpiece fixture for a CNC lathe according to claim 1, characterized in that: The positioning rotating plate (15) in the fixed assembly is rotatably mounted on the side wall of the claw (2) via a rotating shaft (16), and the positioning rotating plate (15) is engaged with the positioning groove (14).

6. A workpiece fixture for a CNC lathe according to claim 5, characterized in that: The positioning plate (15) is threaded with a knob bolt (17) on its side wall. A limit post (18) is fixedly provided at the end of the knob bolt (17). A limit groove (19) is opened on the side wall of the mounting platform (3). The limit post (18) and the limit groove (19) are inserted into each other.

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