A five-axis machining center for preventing C-axis tube entanglement

Abstract

This invention discloses a five-axis machining center for preventing C-axis tube entanglement, relating to the field of machining technology. The five-axis machining center includes a turntable rotatably mounted on an operating table, with a pneumatic slip ring connected to the turntable. The pneumatic slip ring includes an inner ring and an outer ring. One end of the inner ring is connected to the turntable, and the other end is connected to a pneumatic clamp. An air outlet pipe is provided on the inner ring, connected to the air pipe of the pneumatic clamp. The outer ring is connected to an external air source via an air inlet pipe. A clamping assembly is also provided on the operating table for fixing the outer ring. This five-axis machining center for preventing C-axis tube entanglement utilizes the inner ring of the pneumatic slip ring to connect the turntable and the pneumatic clamp, allowing the pneumatic clamp to rotate synchronously with the turntable. Simultaneously, the outer ring is fixed by the clamping assembly, preventing air pipe entanglement during C-axis machining, thus improving production efficiency and reducing equipment failure rate.

Description

Technical Field

[0001] This invention belongs to the field of machine tool technology, and specifically relates to a five-axis machining tool for preventing C-axis tube entanglement. Background Technology

[0002] A five-axis machining center is a CNC machine tool capable of moving along five independent axes. It is widely used in precision manufacturing and the machining of complex parts. Compared to traditional three-axis machining centers (X-axis, Y-axis, Z-axis), five-axis machining centers offer greater machining capabilities and flexibility, making them particularly suitable for complex geometries, curved surfaces, molds, aerospace, and medical devices.

[0003] Five-axis machining centers typically use pneumatic fixtures to clamp workpieces. However, many workpieces require several rotations in the same direction along the C-axis during machining. This can easily lead to problems such as the air hoses connected to the fixture becoming tangled, snagging on the product, or interfering with the tool's machining path, resulting in the tool damaging the product or part. Alternatively, the air hose connections may detach when they reach their torque critical point, causing the fixture to lose vacuum balance and the workpiece to detach from the fixture during machining, among other unpredictable risks. Summary of the Invention

[0004] The purpose of this invention is to provide a five-axis machining center with a simple structure and reasonable design to prevent C-axis tube entanglement in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A five-axis machining center for preventing C-axis tube entanglement includes a base, on which a Y-axis slide rail and an X-axis slide rail are provided. A trunnion is slidably provided on the X-axis slide rail. A column is also provided on the base, on which a Z-axis slide rail is provided. A tool assembly is slidably provided on the Z-axis slide rail.

[0007] The trunnion includes an operating table with a turntable rotatably mounted on it. A pneumatic slip ring is connected to the turntable, and the pneumatic slip ring includes an inner ring and an outer ring. One end of the inner ring is connected to the turntable, and the other end is connected to a pneumatic clamp. An air outlet pipe is provided on the inner ring and is connected to the air pipe of the pneumatic clamp. The outer ring is connected to an external air source through an air inlet pipe. A clamping assembly is also provided on the operating table for fixing the outer ring.

[0008] Furthermore, the clamping assembly includes two sets of clamping parts, which are arranged symmetrically in mirror image with respect to the axis of the turntable. A driving component is connected to the side of the clamping part away from the turntable, and the driving component is used to drive the clamping part to clamp the outer ring.

[0009] Furthermore, a connecting member is provided on the side of the turntable away from the pneumatic slip ring. The connecting member has a cylindrical structure and multiple sets of protrusions are arranged axially inside the connecting member. A limiting member is slidably arranged inside the connecting member. The limiting member has a limiting groove adapted to the protrusion. The limiting member is connected to the connecting member in the moving direction by a first spring. The end of the limiting member away from the turntable is connected to the driving end of the first driving device.

[0010] Furthermore, the operating table has a groove adapted to the turntable, and the limiting member is disposed in the second groove.

[0011] Furthermore, the operating table has a first cavity inside, which is connected to the first groove. A push rod is horizontally slidably arranged inside the first cavity. The push rod is inclined at one end near the first groove, and the end away from the first groove is connected to the inner wall of the first cavity through a second spring. The clamping assembly is activated by the push rod being squeezed by the turntable.

[0012] Furthermore, a control box is provided on the operating table, and a vertical rod is rotatably installed inside the control box. A first gear is provided at one end of the vertical rod and is located in the first cavity. A first rack that meshes with the first gear is provided on the push rod. The vertical rod is rotated by moving the push rod.

[0013] A second gear is provided at the end of the vertical rod away from the first gear. The second gear is connected to the movable rod through a second rack. The end of the movable rod near the turntable is connected to the clamping part.

[0014] Furthermore, an anti-slip layer is provided on the side of the clamping part near the outer ring.

[0015] Furthermore, a pressing part is sleeved on the end of the vertical rod away from the first gear. The pressing part is slidably connected to the vertical rod through a third spring. The second gear is disposed on the pressing part near the end of the first gear. The pressing part is rotatably connected to the control box through the end of the second gear and extends out of the control box.

[0016] Furthermore, the movable rod is connected to the inner wall of the control cavity via an elastic rope in the direction of movement.

[0017] Furthermore, a groove is provided at one end of the vertical rod near the pressing part, and a corresponding slider is provided inside the pressing part.

[0018] The present invention has at least the following beneficial effects: The present invention connects the turntable and the pneumatic fixture by using the inner ring of the pneumatic slip ring, so that the pneumatic fixture can rotate synchronously with the turntable. At the same time, the outer ring is fixed by the clamping assembly, which prevents the air pipe from getting tangled when the five-axis machine tool is performing C-axis machining, thereby improving production efficiency and reducing equipment failure rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the trunnion structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the turntable connector structure of the present invention;

[0022] Figure 4 This is a cross-sectional view of the operating table of the present invention;

[0023] Figure 5 This is a structural diagram of the internal structure of the control box of the present invention;

[0024] Figure 6 This is a schematic diagram of the pressing part structure of the present invention.

[0025] In the diagram: 1. Base; 2. Y-axis slide rail; 3. X-axis slide rail; 4. Trunnion; 401. Operating table; 402. Turntable; 403. Connector; 404. First spring; 405. Limiting component; 407. Limiting groove; 5. Column; 6. Z-axis slide rail; 7. Tool assembly; 8. Pneumatic slip ring; 801. Air inlet pipe; 802. Air outlet pipe; 803. Inner ring; 804. Outer ring; 9. Pneumatic clamp; 10. First drive device; 11. Clamping part; 13. First groove; 14. Second groove; 15. First cavity; 16. Push rod; 17. Second spring; 18. Control box; 19. Vertical rod; 20. First gear; 21. First rack; 22. Second rack; 23. Movable rod; 24. Second gear; 25. Pressing part; 26. Third spring; 27. Elastic rope. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0027] like Figure 1 , Figure 2As shown, a five-axis machining center for preventing C-axis tube entanglement includes a base 1, on which a Y-axis slide rail 2 and an X-axis slide rail 3 are provided. A trunnion 4 is slidably provided on the X-axis slide rail 3. A column 5 is also provided on the base 1, on which a Z-axis slide rail 6 is provided. A tool assembly 7 is slidably provided on the Z-axis slide rail 6.

[0028] The trunnion 4 includes an operating table 401, on which a turntable 402 is rotatably mounted. A pneumatic slip ring 8 is connected to the turntable 402. The pneumatic slip ring 8 includes an inner ring 803 and an outer ring 804. One end of the inner ring 803 is connected to the turntable 402, and the other end is connected to a pneumatic clamp 9. An air outlet pipe 802 is provided on the inner ring 803, and the air outlet pipe 802 is connected to the air pipe of the pneumatic clamp 9. The outer ring 804 is connected to an external air source through an air inlet pipe 801. A clamping assembly is also provided on the operating table 401, which is used to fix the outer ring 804.

[0029] In actual use, the outer ring 804 is fixed by the clamping assembly. When the turntable 402 rotates, it drives the inner ring 803 to rotate. The inner ring 803 drives the pneumatic clamp 9 to rotate. That is, the inner ring 803 and the pneumatic clamp 9 rotate synchronously, which can avoid problems such as air pipe entanglement during the rotation of the pneumatic clamp 9 and improve processing efficiency.

[0030] In a specific embodiment, the clamping assembly includes two sets of clamping parts 11, which are arranged symmetrically in mirror image with respect to the axis of the turntable 402. A driving component is connected to the side of the clamping part 11 away from the turntable 402, and the driving component is used to drive the clamping part 11 to clamp the outer ring 804.

[0031] In actual use, the driving component drives the clamping part 11 to move towards the outer ring 804, thereby fixing the two sets of clamping parts 11 to the outer ring 804. When the inner ring 803 rotates, it can ensure that the outer ring 804 does not rotate, thus preventing the air intake pipe 801 connected to the external air source from getting tangled. The driving component can be an electric telescopic rod, which is set on the operating table 401. The driving end of the electric telescopic rod is connected to the clamping part 11, and the clamping part 11 is controlled to clamp the outer ring 804 by controlling the electric telescopic rod.

[0032] In specific implementation methods, such as Figure 3As shown, a connector 403 is provided on the side of the turntable 402 away from the pneumatic slip ring 8. The connector 403 has a cylindrical structure and multiple sets of protrusions are provided axially inside the connector 403. A limiting member 405 is slidably provided inside the connector 403. A limiting groove 407 adapted to the protrusion is provided on the limiting member 405. The limiting member 405 is connected to the connector 403 in the moving direction by a first spring 404. The end of the limiting member 405 away from the turntable 402 is connected to the driving end of the first driving device 10.

[0033] In specific implementation methods, such as Figure 4 , Figure 5 As shown, the operating table 401 has a groove adapted to the turntable 402, and the limiting member 405 is disposed in the second groove 14.

[0034] Under normal circumstances, when no items are placed on the turntable 402, including the pneumatic slip ring 8 or the pneumatic clamp 9, the turntable 402 is positioned directly above the first groove 13 under the elastic force of the first spring 404. When the pneumatic slip ring 8 is placed on the turntable 402, the first spring 404 is compressed, causing the turntable 402 to be positioned within the first groove 13.

[0035] In a specific embodiment, the operating table 401 has a first cavity 15 inside, which is connected to the first groove 13. A push rod 16 is horizontally slidably arranged inside the first cavity 15. The push rod 16 is inclined at one end near the first groove 13, and the end of the push rod 16 away from the first groove 13 is connected to the inner wall of the first cavity 15 through a second spring 17. The clamping assembly is activated by pressing the push rod 16 through the turntable 402.

[0036] It should be noted that a distance sensor can be set at the end of the push rod 16 away from the first groove 13. When the push rod 16 is fully pressed into the first cavity 15, the distance sensor transmits a signal to the control module, which then controls the operation of the clamping assembly.

[0037] In a specific embodiment, a control box 18 is provided on the operating table 401, and a vertical rod 19 is rotatably provided inside the control box 18. A first gear 20 is provided at one end of the vertical rod 19 and is located in the first cavity 15. A first rack 21 that meshes with the first gear 20 is provided on the push rod 16. The vertical rod 19 is rotated by moving the push rod 16.

[0038] A second gear 24 is provided at the end of the vertical rod 19 away from the first gear 20. The second gear 24 is connected to the movable rod 23 through the second rack 22. The end of the movable rod 23 near the turntable 402 is connected to the clamping part 11.

[0039] In actual use, the pneumatic slip ring 8 is placed on the turntable 402. Under the action of gravity, the first spring 404 is compressed, and the turntable 402 contacts the inclined surface of the push rod 16 and squeezes it into the first cavity 15. During the movement, the first rack 21 meshes with the first gear 20, driving the vertical rod 19 to rotate. As a result, the second gear 24 meshes with the second rack 22, driving the movable rod 23 to move towards the side closer to the turntable 402, thereby realizing the clamping part 11 clamping the outer ring 804.

[0040] In a specific embodiment, the clamping part 11 is provided with an anti-slip layer on the side near the outer ring 804.

[0041] In specific implementation methods, such as Figure 6 As shown, a pressing part 25 is sleeved on the end of the vertical rod 19 away from the first gear 20. The pressing part 25 is slidably connected to the vertical rod 19 through a third spring 26. The second gear 24 is disposed on the pressing part 25 near the end of the first gear 20. The pressing part 25 is rotatably connected to the control box 18 through the end of the second gear 24 and extends out of the control box 18.

[0042] In a specific embodiment, the movable rod 23 is connected to the inner wall of the control cavity via an elastic rope 27 in the direction of movement.

[0043] When the pneumatic slip ring 8 needs to be removed, press the pressing part 25 so that the second gear 24 and the second rack 22 are no longer engaged. At this time, the elastic rope 27 pulls the movable rod 23, so that the movable rod 23 drives the clamping part 11 to move into the control box 18, so that the clamping part 11 releases the clamping part from the outer ring 804. After the pneumatic slip ring 8 is removed, release the pressing part 25. Under the action of the third spring 26, the pressing part 25 is reset, which drives the second gear 24 to reset, so that the second gear 24 and the second rack 22 re-engage, so that the outer ring 804 can be clamped again when used next time.

[0044] It should be noted that a limiting component should be provided between the pressing part 25 and the vertical rod 19 to ensure that the two can rotate synchronously.

[0045] In a specific embodiment, a sliding groove is provided at one end of the vertical rod 19 near the pressing part 25, and a corresponding slider is provided inside the pressing part 25.

[0046] Operating principle: First, place the pneumatic slip ring 8 on the turntable 402. It can be fixed to the turntable 402 using a fixing structure. Connect the air inlet pipe 801 to an external air source. Place the pneumatic clamp 9 on the pneumatic slip ring 8. Similarly, it can be fixed to the pneumatic slip ring 8 using a fixing structure. Connect the air outlet pipe 802 to the air pipe of the pneumatic clamp 9. Under the action of gravity, the first spring 404 is compressed, and the turntable 402 contacts the inclined surface of the push rod 16, squeezing it into the first cavity 15. During the movement, the first rack 21 meshes with the first gear 20, driving the vertical rod 19 to rotate. Thus, the second gear 24 meshes with the second rack 22, driving the movable rod 23 towards... The clamping part 11 moves closer to the turntable 402 to clamp the outer ring 804. When the pneumatic slip ring 8 needs to be removed, the pressing part 25 is pressed, so that the second gear 24 and the second rack 22 are no longer meshed. At this time, the elastic rope 27 pulls the movable rod 23, so that the movable rod 23 drives the clamping part 11 to move into the control box 18, so that the clamping part 11 releases the clamping part 11 from the outer ring 804. After the pneumatic slip ring 8 is removed, the pressing part 25 is released. Under the action of the third spring 26, the pressing part 25 is reset, which drives the second gear 24 to reset, so that the second gear 24 and the second rack 22 re-mesh, so that the outer ring 804 can be clamped again when used next time.

[0047] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A five-axis machining center for preventing C-axis tube entanglement, characterized in that, Includes a base (1), on which a Y-axis slide rail (2) and an X-axis slide rail (3) are provided, on which a trunnion (4) is slidably provided, on which a column (5) is also provided, on which a Z-axis slide rail (6) is provided, and on which a tool assembly (7) is slidably provided; The trunnion (4) includes an operating table (401), on which a turntable (402) is rotatably mounted. A pneumatic slip ring (8) is connected to the turntable (402). The pneumatic slip ring (8) includes an inner ring (803) and an outer ring (804). One end of the inner ring (803) is connected to the turntable (402), and the other end is connected to a pneumatic clamp (9). An air outlet pipe (802) is provided on the inner ring (803), and the air outlet pipe (802) is connected to the air pipe of the pneumatic clamp (9). The outer ring (804) is connected to an external air source through an air inlet pipe (801). A clamping assembly is also provided on the operating table (401), which is used to fix the outer ring (804). The clamping assembly includes two sets of clamping parts (11); A connector (403) is provided on the side of the turntable (402) away from the pneumatic slip ring (8). A limiter (405) is slidably provided inside the connector (403). The limiter (405) is connected to the connector (403) in the moving direction by a first spring (404). The operating table (401) is provided with a first groove that is adapted to the turntable (402), and the limiting member (405) is provided in the second groove (14); The operating table (401) has a first cavity (15) inside, which is connected to the first groove (13). A push rod (16) is horizontally slidably arranged inside the first cavity (15). The push rod (16) is inclined at one end near the first groove (13), and the end of the push rod (16) away from the first groove (13) is connected to the inner wall of the first cavity (15) through a second spring (17). The clamping assembly is activated by pressing the push rod (16) through the turntable (402). The control box (18) is provided on the operating table (401). A vertical rod (19) is rotatably provided inside the control box (18). A first gear (20) is provided at one end of the vertical rod (19) and is located in the first cavity (15). A first rack (21) that meshes with the first gear (20) is provided on the push rod (16). The vertical rod (19) is rotated by moving the push rod (16). The vertical rod (19) has a second gear (24) at the end away from the first gear (20). The second gear (24) is connected to the movable rod (23) through the second rack (22). The movable rod (23) is connected to the clamping part (11) at the end near the turntable (402). The vertical rod (19) is provided with a pressing part (25) at the end away from the first gear (20). The pressing part (25) is slidably connected to the vertical rod (19) through a third spring (26). The second gear (24) is disposed at the end of the pressing part (25) close to the first gear (20).

2. A five-axis machining center for preventing C-axis tube entanglement according to claim 1, characterized in that, The two sets of clamping parts (11) are arranged in a mirror symmetrical manner with respect to the axis of the turntable (402). A driving component is connected to the side of the clamping part (11) away from the turntable (402). The driving component is used to drive the clamping part (11) to clamp the outer ring (804).

3. A five-axis machining center for preventing C-axis tube entanglement according to claim 2, characterized in that, The connector (403) has a cylindrical structure. Multiple sets of protrusions are arranged axially inside the connector (403). The limiting member (405) has a limiting groove (407) that matches the protrusions. The end of the limiting member (405) away from the turntable (402) is connected to the driving end of the first driving device (10).

4. A five-axis machining center for preventing C-axis tube entanglement according to any one of claims 2-3, characterized in that, The clamping part (11) is provided with an anti-slip layer on the side near the outer ring (804).

5. A five-axis machining center for preventing C-axis tube entanglement according to claim 4, characterized in that, The end of the pressing part (25) away from the second gear (24) is rotatably connected to the control box (18) and extends out of the control box (18).

6. A five-axis machining center for preventing C-axis tube entanglement according to claim 5, characterized in that, The movable rod (23) is connected to the inner wall of the control box via an elastic rope (27) in the direction of movement.

7. A five-axis machining center for preventing C-axis tube entanglement according to claim 6, characterized in that, The vertical rod (19) has a groove at one end near the pressing part (25), and a corresponding slider is provided in the pressing part (25).

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