Five-axis turntable with harmonic structure

Abstract

The utility model relates to the field of numerical control center tooling equipment, in particular to a five-axis turntable with a harmonic structure, which is characterized in that a first bearing and a second bearing are respectively arranged on two sides of a C-axis assembly, and the C-axis assembly is respectively arranged on a tailstock assembly and an A-axis assembly on the left side and the right side through the first bearing and the second bearing; the A shaft assembly comprises a second motor, and a first gear and a roller are in transmission through a cam; the C-axis assembly comprises a C-axis box body, a first motor is arranged on the C-axis box body, a harmonic speed reducer is arranged on the first motor in a transmission mode, and a dial is installed on the harmonic speed reducer. According to the utility model, the speed reduction from the first motor to the dial is realized by using the harmonic speed reducer, the harmonic speed reducer is an integral device, so that the installation convenience is improved, the harmonic speed reducer can provide more flexible rotation ratio selection, and the harmonic speed reducer has the characteristic of no back clearance in structure, so that the reliability of the device is improved. And higher rotation precision can be provided for the C-axis assembly.

Description

Technical Field

[0001] This utility model relates to the field of CNC center tooling equipment technology, and in particular to a five-axis rotary table with a harmonic structure. Background Technology

[0002] A five-axis rotary table is a high-precision mechanical device that integrates three linear axes and two rotary axes. It achieves complex spatial motion through five-axis linkage and is a key piece of equipment for modern manufacturing industries that pursue high precision and high efficiency.

[0003] Most five-axis rotary tables on the market currently use a cam roller structure for their A / C axes. When arranging the C-axis assembly using this structure, it's necessary to simultaneously arrange the gear transmission structure, cam rollers, and support bearings, making installation cumbersome. Furthermore, the choice of the rotary table's transmission ratio is limited by the arrangement of these components within the housing. Additionally, due to the large number of parts and issues such as gear backlash, improving the rotary table's accuracy is difficult. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a five-axis turntable with a harmonic structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A five-axis turntable with a harmonic structure includes an A-axis assembly, a C-axis assembly, and a tailstock assembly. The C-axis assembly is provided with a first bearing and a second bearing on both sides, and the C-axis assembly is mounted on the tailstock assembly and the A-axis assembly on the left and right sides respectively through the first bearing and the second bearing.

[0007] The A-axis assembly includes a second motor, which drives the first gear to rotate via a second gear. A turret is provided on the inner ring of the second bearing, and rollers are provided on the turret. The first gear and the rollers are driven by a cam.

[0008] The C-axis assembly includes a C-axis housing, on which a first motor is mounted, and a harmonic reducer is driven on the first motor, with a dial mounted on the harmonic reducer.

[0009] Furthermore, in a preferred configuration, the second gear drive is mounted on the output shaft of the second motor, and the first gear and the second gear mesh and drive each other.

[0010] Furthermore, in a preferred configuration, the first gear is fastened to a cam, the cam is provided with a helical groove, and the helical groove and the roller engage in transmission.

[0011] Furthermore, in a preferred configuration, a connecting disc and a turret are fixedly mounted on the inner ring of the second bearing, and rollers are mounted on the turret.

[0012] Furthermore, in a preferred configuration, the outer ring of the harmonic reducer is fixedly mounted on the C-axis housing, and the output shaft of the first motor is fixedly connected to the inner ring of the harmonic reducer for transmission.

[0013] Furthermore, in a preferred configuration, the dial is fixedly mounted on the inner ring of the harmonic reducer, and the dial is locked in place by screws.

[0014] In addition, a preferred structure is that a front cover is fixedly installed on the C-axis housing by screws, a brake ring is installed inside the C-axis housing by high-pressure gas through an air passage, a matching brake pad is provided between the brake ring and the front cover, and the brake pad is fixedly installed on the dial.

[0015] The beneficial effects of this utility model are as follows: by using a harmonic reducer to achieve speed reduction from the first motor to the dial, the harmonic reducer is an integral device, which improves the ease of installation, and the harmonic reducer can provide more flexible rotation ratio selection. Moreover, due to the backlash-free structure of the harmonic reducer, it can also provide higher rotational accuracy for the C-axis assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a five-axis turntable with a harmonic structure proposed in this utility model;

[0017] Figure 2 for Figure 1 The sectional view at point AA.

[0018] In the diagram: 1 Brake ring, 2 Dial, 3 Front cover, 4 C-shaft housing, 5 First motor, 6 Harmonic reducer, 7 Tailstock housing, 8 First bearing, 9 Connecting disc, 10 Second bearing, 11 Turret, 12 Cam, 13 Roller, 14 First gear, 15 Second gear, 16 Second motor, 17 Brake pad. Detailed Implementation

[0019] 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-2 A five-axis turntable with a harmonic structure includes an A-axis assembly, a C-axis assembly, and a tailstock assembly. A first bearing 8 and a second bearing 10 are respectively provided on both sides of the C-axis assembly. The C-axis assembly is mounted on the tailstock assembly and the A-axis assembly on the left and right sides respectively through the first bearing 8 and the second bearing 10.

[0021] The A-axis assembly includes a second motor 16, which drives the first gear 14 to rotate via a second gear 15. A turret 11 is provided on the inner ring of the second bearing 10, and rollers 13 are provided on the turret 11. The first gear 14 and rollers 13 are driven by a cam 12.

[0022] The C-axis assembly includes a C-axis housing 4, on which a first motor 5 is mounted. A harmonic reducer 6 is driven on the first motor 5, and a dial 2 is mounted on the harmonic reducer 6.

[0023] The second gear 15 is mounted on the output shaft of the second motor 16, and the first gear 14 and the second gear 15 mesh with each other. Through the meshing arrangement between the first gear 14 and the second gear 15, the power output from the second motor 16 can be transmitted.

[0024] The first gear 14 is fastened to the cam 12, which has a helical groove that meshes with the roller 13. A connecting disc 9 and a turret 11 are fixedly mounted on the inner ring of the second bearing 10, with the roller 13 mounted on the turret 11. The first gear 14 drives the cam 12 to rotate, and the meshing of the helical groove and roller 13 drives the turret 11 to rotate.

[0025] The outer ring of the harmonic reducer 6 is fixedly mounted on the C-axis housing, and the output shaft of the first motor 5 is fixedly connected to the inner ring of the harmonic reducer 6 for transmission. This enables transmission between the first motor and the harmonic reducer 6.

[0026] The dial 2 is fixedly mounted on the inner ring of the harmonic reducer 6 and is locked in place by screws. This allows the dial 2 to rotate together with the inner ring of the harmonic reducer 6.

[0027] The C-axis housing 4 is fixedly mounted with a front cover 3 by screws. Inside the C-axis housing 4, a brake ring 1 is installed by high-pressure gas through an air passage. A matching brake pad 17 is positioned between the brake ring 1 and the front cover 3, and the brake pad 17 is fixedly mounted on the dial 2. The high-pressure gas entering through the air passage pushes the brake ring 1 to move, causing the brake ring 1 to push the brake pad 17 and press it against the front cover 3, thereby achieving braking of the dial 2.

[0028] In this embodiment, the C-axis assembly of the middle harmonic structure is supported by bearings on the A-axis assemblies and tailstock assemblies on the left and right sides to achieve free rotation of the C-axis assembly.

[0029] Furthermore, in the A-axis assembly cam roller structure, the second gear 15 is fixed integrally with the second motor 16, and transmission is achieved through the meshing of the first gear 14 and the second gear 15. The first gear 14 is fastened to the cam 12, and the roller 13 is meshed in the helical groove of the cam 12. The roller 13 is mounted on the turret 11. When the cam 12 rotates, the roller 13 drives the turret 11 to rotate. The turret 11 and the connecting disc 9 are simultaneously fixed on the inner ring of the second bearing 10, achieving free rotation.

[0030] Furthermore, in the C-axis assembly structure, the C-axis assembly with a harmonic structure is mounted on the A-axis assembly and the tailstock assembly via the first bearing 8 and the second bearing 10, enabling the assembly to rotate around its axis. In the C-axis assembly, the first motor 5 provides power, and the motor shaft is fixedly connected to the inner ring of the harmonic reducer 6 to achieve transmission. The outer ring of the harmonic reducer 6 is fixed to the C-axis housing 4. The dial 2 is screwed onto the inner ring of the harmonic reducer 6 and rotates with the inner ring.

[0031] A front cover 3 is fixedly mounted on the C-axis housing 4 with screws. Inside the C-axis housing 4, a brake ring 1 is installed by high-pressure gas through an air passage. A matching brake pad 17 is positioned between the brake ring 1 and the front cover 3, and the brake pad 17 is fixedly mounted on the dial 2. The high-pressure gas entering through the air passage pushes the brake ring 1 to move, causing the brake ring 1 to push the brake pad 17 and press it against the front cover 3, thereby achieving braking of the dial 2.

[0032] Furthermore, this structure differs from conventional five-axis rotary tables. Instead of using a cam roller and gear transmission structure for the C-axis, this structure uses a harmonic reducer 6 to achieve speed reduction from the first motor 5 to the dial 2.

[0033] The harmonic reducer 6 is an integral unit that can be directly installed inside the C-shaft housing 4 during installation. This makes it more compact and simpler than the cam roller gear structure, and easier to install.

[0034] Meanwhile, the harmonic reducer 6 structure offers a more flexible reduction ratio selection, while the cam roller structure is limited by the gear size and cam roller structure, restricting the selection of the reduction ratio.

[0035] In addition, the backlash-free structure of the harmonic reducer 6 provides higher rotational accuracy for the C-axis assembly.

[0036] In this invention, a harmonic reducer 6 is used to reduce the speed of the first motor 5 to the dial 2. Since the harmonic reducer 6 is an integral device, the ease of installation is improved. Furthermore, the harmonic reducer 6 can provide a more flexible rotation ratio selection. Moreover, due to the backlash-free structure of the harmonic reducer 6, it can also provide higher rotational accuracy for the C-axis assembly.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A five-axis turntable of harmonic structure, comprising an A-axis assembly, a C-axis assembly and a tailstock assembly, characterized in that, The C-axis assembly is provided with a first bearing (8) and a second bearing (10) on both sides respectively. The C-axis assembly is mounted on the tailstock assembly and the A-axis assembly on the left and right sides respectively through the first bearing (8) and the second bearing (10). The A-axis assembly includes a second motor (16), which drives the first gear (14) to rotate via a second gear (15). A turret (11) is provided on the inner ring of the second bearing (10), and a roller (13) is provided on the turret (11). The first gear (14) and the roller (13) are driven by a cam (12). The C-axis assembly includes a C-axis housing (4), on which a first motor (5) is mounted, and a harmonic reducer (6) is driven on the first motor (5), and a dial (2) is mounted on the harmonic reducer (6).

2. The five-axis turntable of claim 1, wherein, The second gear (15) is driven on the output shaft of the second motor (16), and the first gear (14) and the second gear (15) mesh and drive each other.

3. The five-axis turntable of claim 2, wherein, The first gear (14) is fastened to the cam (12), which has a helical groove and meshes with the roller (13).

4. The five-axis turntable of claim 3, wherein, The inner ring of the second bearing (10) is fixedly mounted with a connecting disc (9) and a turret (11), and rollers (13) are mounted on the turret (11).

5. The five-axis harmonic structure of claim 1, wherein, The outer ring of the harmonic reducer (6) is fixedly mounted on the C-axis housing, and the output shaft of the first motor (5) is fixedly connected to the inner ring of the harmonic reducer (6) for transmission.

6. A five-axis rotary table with a harmonic structure according to claim 1, characterized in that, The dial (2) is fixedly installed on the inner ring of the harmonic reducer (6), and the dial (2) is locked by screws.

7. The five-axis harmonic structure of claim 1, wherein, The front cover (3) is fixedly installed on the C-axis housing (4) by screws. A brake ring (1) is installed inside the C-axis housing (4) by high-pressure gas through the air passage. A matching brake pad (17) is provided between the brake ring (1) and the front cover (3), and the brake pad (17) is fixedly installed on the dial (2).

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