A machine tool worktable structure for easy and quick workpiece change

Abstract

This utility model discloses a machine tool worktable structure that facilitates rapid workpiece change. It includes a worktable body, a fixture mounted on the top of the worktable body, and equally spaced grooves on the outer wall of the fixture. A clamping block is mounted inside each groove via a rotating shaft. A workpiece body is positioned on the top of the fixture, and a drive cavity is provided inside the fixture. A movable disc is located inside the drive cavity, and equally spaced snap-fit ​​grooves are provided on the outer wall of the movable disc. A threaded hole is located at the center of the movable disc. The snap-fit ​​portion at the bottom of the clamping block engages with the snap-fit ​​grooves, and a clamping portion is provided on the top of the clamping block. A motor is installed inside the worktable body. This utility model enables rapid clamping and releasing actions, facilitating quick workpiece change.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically to a machine tool worktable structure that facilitates quick workpiece replacement. Background Technology

[0002] The machine tool worktable is one of the core components of a CNC machine tool. In the machining and manufacturing process, workpiece clamping is a very important step, which involves firmly fixing the workpiece on the machine tool or fixture for processing.

[0003] Currently, when machining ring-shaped workpieces, the workpiece is clamped from both sides by clamping blocks on the worktable to fix it on the machine tool worktable. However, when changing workpieces, it is necessary to remove the clamping blocks one by one, then replace the workpiece, and then tighten the clamping blocks one by one to fix the workpiece. The operation is very cumbersome and reduces the machining efficiency. Therefore, we propose a machine tool worktable structure that facilitates quick workpiece changes. Utility Model Content

[0004] The purpose of this invention is to provide a machine tool worktable structure that facilitates quick workpiece replacement, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a machine tool worktable structure for easy and quick workpiece replacement, comprising a worktable body, a fixture mounted on the top of the worktable body, and equally spaced grooves provided on the outer wall of the fixture, with a clamping block mounted inside the grooves via a rotating shaft, a workpiece body mounted on the top of the fixture, a drive cavity provided inside the fixture, a movable disk provided inside the drive cavity, and equally spaced snap-fit ​​grooves provided on the outer wall of the movable disk, with a threaded hole provided at the center of the movable disk, the snap-fit ​​part at the bottom of the clamping block engaging with the snap-fit ​​groove, and a clamping part provided on the top of the clamping block, a motor mounted inside the worktable body, and the output end of the motor fixedly connected to the bottom end of a threaded rod.

[0006] Preferably, an annular step is provided on the inner wall of the fixture below the workpiece body, and a chip collection disc is provided on the surface of the annular step. The chip collection disc collects the waste chips generated during processing, and the waste chips can be quickly cleaned by removing the chip collection disc.

[0007] Preferably, the chip collection disc is an annular structure with an open upper end and a sealed lower end, and the outer wall of the chip collection disc is in contact with the inner wall of the annular step.

[0008] Preferably, the grooves and clamping blocks are provided in three sets and are distributed at equal intervals, and the snap-fit ​​grooves are provided in three sets and correspond one-to-one with the clamping blocks, so as to firmly fix the workpiece body on the worktable.

[0009] Preferably, the top end of the threaded rod extends into the interior of the threaded hole and engages with its threads, while the bottom end of the threaded rod extends into the interior of the worktable body.

[0010] Preferably, a support spring is provided below the movable disk. The support spring is sleeved on the outside of the threaded rod. The top end of the support spring is fixedly connected to the movable disk, and the bottom end of the support spring is fixedly connected to the inner wall of the bottom of the drive cavity, so as to provide elastic support force for the movable disk.

[0011] Preferably, limit guide rods are fixed on both sides of the bottom end of the movable disk, and the bottom end of the limit guide rods extends into the limit guide cylinder inside the drive cavity.

[0012] Preferably, an anti-slip sheet is adhered to the inner wall of the clamping part. The anti-slip sheet is made of rubber, which can not only increase the friction and make the clamping firm, but also prevent the workpiece from wearing.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The motor drives the threaded rod to rotate in the threaded hole inside the movable disc, driving the movable disc to move downwards. The movable disc engages with the clamping part through the snap-fit ​​groove, causing the clamping block to rotate around the pivot. The clamping block rotates towards the workpiece body and clamps the workpiece body through the clamping part. There are three sets of clamping blocks evenly distributed around the periphery of the workpiece body, which can firmly fix the workpiece body on the worktable. When it is necessary to change the workpiece body, simply control the motor to drive the threaded rod to rotate in the opposite direction, causing the movable disc to move upwards and drive the clamping block to open, so that the workpiece body can be released and then removed for replacement. This allows for quick clamping and releasing, facilitating rapid workpiece replacement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 2 This is an enlarged cross-sectional view of the movable disc of this utility model; Figure 3 This is a schematic diagram of the clamping block release state structure of this utility model; Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a top view of the structure of this utility model.

[0015] In the diagram: 1. Workbench body; 2. Motor; 3. Fixture; 4. Groove; 5. Clamping block; 6. Rotating shaft; 7. Workpiece body; 8. Drive cavity; 9. Movable disc; 10. Support spring; 11. Threaded rod; 12. Threaded hole; 13. Snap-fit ​​groove; 14. Limiting guide rod; 15. Limiting guide cylinder; 16. Clamping part; 17. Snap-fit ​​part; 18. Annular step; 19. Chip collection disc; 20. Anti-slip plate. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figure 1-5 An embodiment of this utility model is provided: a machine tool workbench structure that facilitates quick workpiece replacement, including a workbench body 1, a clamp 3 installed at the top of the workbench body 1, and grooves 4 with equal spacing provided on the outer wall of the clamp 3, and a clamping block 5 installed inside the groove 4 through a rotating shaft 6, and a workpiece body 7 provided at the top of the clamp 3. The fixture 3 has a drive cavity 8 inside, and a movable disk 9 inside the drive cavity 8. The outer wall of the movable disk 9 has equally spaced snap-fit ​​grooves 13. A threaded hole 12 is provided at the center of the movable disk 9. The snap-fit ​​part 17 at the bottom of the clamping block 5 snaps into the snap-fit ​​groove 13. The top of the clamping block 5 is provided with a clamping part 16. The workbench body 1 has a motor 2 installed inside, and the output end of the motor 2 is fixedly connected to the bottom end of the threaded rod 11. Specifically, the workpiece is placed on top of the fixture 3. Next, the motor 2 drives the threaded rod 11 to rotate within the threaded hole 12 inside the movable disc 9. Under the rotational action of the threaded rod 11 and the limiting action of the limiting guide rod 14 and the limiting guide cylinder 15, the movable disc 9 overcomes the elasticity of the support spring 10 and moves downward along the threaded rod 11. The movable disc 9, through the engaging action of the engaging groove 13 and engaging part 17, engages with the clamping block 5, causing it to rotate around the rotating shaft 6. The clamping block 5 rotates towards the workpiece body 7 and clamps the workpiece body 7 through the clamping part 16. There are three sets of clamping blocks 5 evenly distributed around the periphery of the workpiece body 7, thus firmly fixing the workpiece body 7 onto the worktable 1. An annular step 18 is provided on the inner wall of the fixture 3 below the workpiece body 7, and a chip collection disc 19 is provided on the surface of the annular step 18. The chip collection disc 19 is an annular structure with an open top and a sealed bottom, and the outer wall of the chip collection disc 19 is in contact with the inner wall of the annular step 18. Furthermore, since the chip collection disc 19 is located below the workpiece body 7, the chip collection disc 19 collects the waste chips generated during processing. The waste chips can be quickly cleaned by removing the chip collection disc 19. The grooves 4 and clamping blocks 5 are provided in three sets and are equally spaced. The snap-fit ​​grooves 13 are provided in three sets and correspond one-to-one with the clamping blocks 5. The top end of the threaded rod 11 extends into the interior of the threaded hole 12 and engages with its threads, while the bottom end of the threaded rod 11 extends into the interior of the worktable body 1. A support spring 10 is provided below the movable disk 9. The support spring 10 is sleeved on the outside of the threaded rod 11. The top end of the support spring 10 is fixedly connected to the movable disk 9, and the bottom end of the support spring 10 is fixedly connected to the inner wall of the bottom of the drive cavity 8. The workpiece body 7 is processed by the machine tool. When the workpiece body 7 needs to be replaced, the motor 2 is controlled to drive the threaded rod 11 to rotate in the opposite direction, so that the movable plate 9 moves up and drives the clamping block 5 to open, thereby releasing the workpiece body 7. Then the workpiece body 7 can be taken away and replaced. This design can quickly realize the clamping and releasing action, thus facilitating the quick replacement of workpieces. Limiting guide rods 14 are fixed on both sides of the bottom of the movable plate 9, and the bottom end of the limiting guide rods 14 extends into the limiting guide cylinder 15 inside the drive cavity 8. An anti-slip sheet 20 is adhered to the inner wall of the clamping part 16. The anti-slip sheet 20 is made of rubber, which can not only increase the friction and make the clamping firm, but also prevent the workpiece from wearing.

[0019] In this embodiment, the workpiece is first placed on top of the fixture 3. Then, the motor 2 drives the threaded rod 11 to rotate within the threaded hole 12 inside the movable disc 9. Under the rotation of the threaded rod 11 and the limiting action of the limiting guide rod 14 and the limiting guide cylinder 15, the movable disc 9 overcomes the elasticity of the support spring 10 and moves downwards along the threaded rod 11. The movable disc 9, through the engaging action of the engaging groove 13 and engaging part 17, engages with the clamping block 5, causing it to rotate around the rotating shaft 6. The clamping block 5 rotates towards the workpiece body 7 and clamps the workpiece body 7 through the clamping part 16. Three sets of clamping blocks 5 are evenly distributed around the periphery of the workpiece body 7, thus firmly fixing the workpiece body 7 to the worktable. On the upper part, the anti-slip sheet 20 adhering to the inner wall of the clamping part 16 not only increases the friction and makes the clamping firm, but also prevents the workpiece from wearing. Then, the workpiece body 7 is processed by the machine tool. When it is necessary to replace the workpiece body 7, simply control the motor 2 to drive the threaded rod 11 to rotate in the opposite direction, so that the movable disk 9 moves up and drives the clamping block 5 to open, thereby releasing the workpiece body 7. Then the workpiece body 7 can be taken away and replaced. This design can quickly realize the clamping and releasing action, thus facilitating the quick replacement of workpieces. In addition, since the chip collection disk 19 is located below the workpiece body 7, the chip collection disk 19 collects the waste chips generated during processing. The waste chips can be quickly cleaned by removing the chip collection disk 19.

[0020] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A machine tool worktable structure for easy and quick workpiece change, comprising a worktable body (1), characterized in that, The top of the workbench body (1) is equipped with a clamp (3), and the outer wall of the clamp (3) is provided with equally spaced grooves (4), and the inside of the grooves (4) is equipped with a clamping block (5) through a rotating shaft (6). The top of the clamp (3) is provided with a workpiece body (7), the inside of the clamp (3) is provided with a drive cavity (8), the inside of the drive cavity (8) is provided with a movable disk (9), and the outer wall of the movable disk (9) is provided with equally spaced snap-fit ​​grooves (13). The center position inside the movable disk (9) is provided with a threaded hole (12). The snap-fit ​​part (17) at the bottom of the clamping block (5) snaps into the snap-fit ​​groove (13), and the top of the clamping block (5) is provided with a clamping part (16). The inside of the workbench body (1) is equipped with a motor (2), and the output end of the motor (2) is fixedly connected to the bottom end of the threaded rod (11).

2. The machine tool worktable structure for easy and quick workpiece changing according to claim 1, characterized in that: An annular step (18) is provided on the inner wall of the clamp (3) below the workpiece body (7), and a chip collection disc (19) is provided on the surface of the annular step (18).

3. The machine tool worktable structure for easy and quick workpiece change according to claim 2, characterized in that: The chip collection disc (19) is an annular structure with an open upper end and a sealed lower end. The outer wall of the chip collection disc (19) is in contact with the inner wall of the annular step (18).

4. The machine tool worktable structure for easy and quick workpiece change according to claim 1, characterized in that: The groove (4) and clamping block (5) are provided in three sets and are distributed at equal intervals. The snap-fit ​​groove (13) is provided in three sets and corresponds one-to-one with the clamping block (5).

5. The machine tool worktable structure for easy and quick workpiece changing according to claim 1, characterized in that: The top end of the threaded rod (11) extends into the interior of the threaded hole (12) and engages with its threads, while the bottom end of the threaded rod (11) extends into the interior of the worktable body (1).

6. The machine tool worktable structure for easy and quick workpiece change according to claim 1, characterized in that: A support spring (10) is provided below the movable disk (9). The support spring (10) is sleeved on the outside of the threaded rod (11). The top end of the support spring (10) is fixedly connected to the movable disk (9), and the bottom end of the support spring (10) is fixedly connected to the inner wall of the bottom of the drive cavity (8).

7. The machine tool worktable structure for easy and quick workpiece change according to claim 1, characterized in that: Limiting guide rods (14) are fixed on both sides of the bottom of the movable disk (9), and the bottom end of the limiting guide rods (14) extends into the limiting guide cylinder (15) inside the drive cavity (8).

8. The machine tool worktable structure for easy and quick workpiece changing according to claim 1, characterized in that: An anti-slip sheet (20) is adhered to the inner wall of the clamping part (16), and the anti-slip sheet (20) is made of rubber.

Images