Hollow multilayer air brake mechanism for rotary table

Abstract

The utility model provides a hollow multi-layer air brake mechanism for a rotary table, which comprises a hollow rotary connecting shaft, a brake seat, a brake outer sleeve mounted on the brake seat and a hollow brake rear cover mounted on the brake outer sleeve, and a hollow brake front cover is arranged at one end, far away from the brake rear cover, of the brake outer sleeve. A hollow brake driving assembly is arranged between the brake rear cover and the brake front cover, a disc assembly is arranged between the brake driving assembly and the brake seat, and a brake air inlet pipe and a vehicle loosening air inlet pipe are arranged on the brake rear cover. By means of the structure, under the cooperation of the brake driving assembly and the disc assembly, after the brake air inlet pipe is inflated with air, air pressure sequentially pushes the multiple coaxial pistons and the brake pressing piston of the brake driving assembly, and the brake pressing piston extrudes the disc assembly for braking; through the cooperation of the multiple coaxial pistons and the brake pressing piston, the brake torque can be greatly improved in a limited radial space, and the cutting rigidity and the cutting efficiency of a machine tool are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of machine tool turntable braking mechanisms, and in particular to a hollow multi-layer air brake mechanism for turntables. Background Technology

[0002] CNC rotary tables have a wide range of applications, frequently used in production workshops and other environments. They are used to transfer workpieces and perform multi-station operations. When machining centers and CNC machine tools perform complex surface machining on workpieces, continuous rotation and unequal-division rotation are required. This necessitates that the workpiece clamped on the CNC rotary table be quickly positioned at a precise angle, requiring precise braking of the CNC rotary table. Currently, drum brakes are commonly used for braking CNC rotary tables. Drum brake mechanisms are mostly hydraulic ring brakes, where the brake drum is a thin-walled part that deforms under hydraulic pressure to grip the rotating part, achieving the braking purpose.

[0003] However, the traditional drum brake mechanism of CNC rotary tables has poor braking torque, which affects the accuracy of braking. Furthermore, after long-term wear of the brake drum, the brake gap will increase, the braking force will weaken, or even the brake will fail. In severe cases, the brake drum will wear thin, affecting the lifespan and accuracy of the CNC rotary table. Utility Model Content

[0004] This utility model discloses a hollow multi-layer air brake mechanism for a turntable, which mainly solves the problems of torque difference and low braking accuracy of traditional CNC turntable drum brake mechanisms.

[0005] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows:

[0006] This utility model provides a hollow multi-layer air brake mechanism for a turntable, including a hollow rotary connecting shaft, a brake seat, a brake sleeve mounted on the brake seat, and a hollow brake rear cover mounted on the brake sleeve. A hollow brake front cover is provided at the end of the brake sleeve away from the brake rear cover. A hollow brake drive assembly is provided between the brake rear cover and the brake front cover. A hollow disc assembly is provided between the brake drive assembly and the brake seat. A brake air inlet pipe and a release air inlet pipe are provided on the brake rear cover.

[0007] The brake cover is provided with a release channel;

[0008] Along the direction from the front brake cover to the rear brake cover, the brake drive assembly is sequentially provided with a hollow brake clamping piston and multiple hollow coaxial pistons. Hollow piston partitions are provided between the brake clamping piston and the coaxial pistons, and between adjacent coaxial pistons. The end of the brake clamping piston away from the piston partition passes through the front brake cover to one side of the disc assembly. Multiple brake through holes are penetrating the coaxial piston, and the brake through holes are connected to the brake intake pipe. Release through holes are penetrating the piston partitions, and the release channel is connected to the release intake pipe through the release through holes.

[0009] In one embodiment, the disc assembly includes a plurality of brake discs and a plurality of outer discs, the brake discs and outer discs being arranged alternately, the brake discs being fixed to a rotating connecting shaft, and the outer discs being fixed to a brake seat.

[0010] In one embodiment, the coaxial piston has a venting ring groove on the side facing the brake cover, and the venting ring groove communicates with the brake through hole.

[0011] In one embodiment, the brake rear cover has a brake air intake hole through it at the position corresponding to the brake air intake pipe, and the brake air intake pipe is installed in the brake air intake hole.

[0012] In one embodiment, a release air inlet is provided through the brake cover at the position corresponding to the release through hole, and the release air inlet pipe is installed in the release air inlet, and the release air inlet communicates with the release through hole.

[0013] In one embodiment, O-rings are provided between the brake rear cover and the coaxial piston, between the coaxial piston and the piston partition, between the brake clamping piston and the piston partition, between the brake clamping piston and the brake front cover, between the brake rear cover and the piston partition, between the piston partition and the piston, between the brake clamping piston and the brake outer sleeve, and between the brake outer sleeve and the brake rear cover.

[0014] The advantages or beneficial effects of the above technical solution include at least the following: with the cooperation of the brake drive assembly and the disc assembly, after gas is injected into the brake intake pipe, the air pressure sequentially pushes multiple coaxial pistons and brake clamping pistons of the brake drive assembly, causing the brake clamping piston to squeeze the disc assembly for braking. With the cooperation of multiple coaxial pistons and brake clamping pistons, the braking torque can be greatly increased within a limited radial space. And through the effective braking torque, the braking rigidity of the direct drive rotary table is effectively guaranteed, thereby improving the cutting rigidity and cutting efficiency of the machine tool. Attached Figure Description

[0015] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0016] Figure 1 A schematic diagram of a hollow multi-layer air brake mechanism according to an exemplary embodiment of the present invention is shown;

[0017] Figure 2 An exemplary embodiment of the present invention is shown. Figure 1 An enlarged diagram of A in the diagram.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Rotary connecting shaft;

[0020] 2. Brake mount;

[0021] 3. Brake cover;

[0022] 4. Brake rear cover;

[0023] 41. Brake air intake; 42. Engine release air intake;

[0024] 5. Brake front cover;

[0025] 51. Vehicle release lane;

[0026] 6. Brake drive assembly;

[0027] 61. Brake clamping piston; 62. Coaxial piston; 621. Brake through hole; 622. Vent ring groove; 63. Piston partition; 631. Release through hole;

[0028] 7. Disc assembly;

[0029] 71. Brake disc; 72. Outer disc;

[0030] 8. Brake intake pipe;

[0031] 9. Loosen the air intake pipe. Detailed Implementation

[0032] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0033] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0035] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0036] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0037] See Figure 1 The present invention provides a hollow multi-layer air brake mechanism for a turntable, including a hollow rotary connecting shaft 1, a brake seat 2, a brake sleeve 3 mounted on the brake seat 2, and a hollow brake rear cover 4 mounted on the brake sleeve 3. A hollow brake front cover 5 is provided at the end of the brake sleeve 3 away from the brake rear cover 4. A hollow brake drive assembly 6 is provided between the brake rear cover 4 and the brake front cover 5. A hollow disc assembly 7 is provided between the brake drive assembly 6 and the brake seat 2. A brake air inlet pipe 8 and a release air inlet pipe 9 are provided on the brake rear cover 4.

[0038] A release passage 51 is provided in the front cover of the brake;

[0039] Along the direction from the front brake cover 5 to the rear brake cover 4, the brake drive assembly 6 is sequentially provided with a hollow brake clamping piston 61 and multiple hollow coaxial pistons 62. Hollow piston partitions 63 are provided between the brake clamping piston 61 and the coaxial pistons 62, and between adjacent coaxial pistons 62. The end of the brake clamping piston 61 away from the piston partition 63 passes through the front brake cover 5 to one side of the disc assembly 7. Multiple brake through holes 621 are passed through the coaxial piston 62, and the brake through holes 621 are connected to the brake intake pipe 8. Release through holes 631 are passed through the piston partition 63, and the release channel 51 is connected to the release intake pipe 9 through the release through holes 631.

[0040] With the above structure, through the cooperation of the brake drive assembly 6 and the disc assembly 7, after gas is injected into the brake intake pipe 8, the air pressure sequentially pushes multiple coaxial pistons 62 and brake clamping pistons 61 of the brake drive assembly 6, causing the brake clamping piston 61 to squeeze the disc assembly 7 for braking. Through the cooperation of multiple coaxial pistons 62 and brake clamping pistons 61, the braking torque can be greatly increased within a limited radial space. The effective braking torque effectively ensures the braking rigidity of the direct drive rotary table, improving the cutting rigidity and cutting efficiency of the machine tool. The hollow structure of the rotary connecting shaft 1, brake rear cover 4, brake front cover 5, brake drive assembly 6, and disc assembly 7 facilitates the hollow routing of the direct drive rotary table and the application of rotary tooling.

[0041] In one embodiment, see Figure 1 and Figure 2 The disc assembly 7 includes multiple brake discs 71 and multiple outer discs 72, with the brake discs 71 and outer discs 72 arranged alternately. The brake discs 71 are fixed to the rotary connecting shaft 1, and the outer discs 72 are fixed to the brake seat 2. In practical applications, the cooperation of the brake discs 71 and outer discs 72 can further increase the friction torque of the discs, thereby ensuring the braking rigidity of the turntable and improving the cutting rigidity and cutting efficiency of the machine tool.

[0042] In one embodiment, see Figure 1 The coaxial piston 62 has a venting ring groove 622 on the side facing the brake rear cover 4, and the venting ring groove 622 communicates with the brake through hole 621. In practical application, the venting ring groove 622 facilitates the introduction of gas into the brake intake pipe 8, making it easier for gas to enter the brake through hole 621.

[0043] The brake rear cover 4 has a brake air intake hole 41 passing through it, corresponding to the position of the brake air intake pipe 8. The brake air intake pipe 8 is installed in the brake air intake hole 41. In practical applications, the design of the brake air intake hole 41 facilitates the installation of the brake air intake pipe 8 on the brake rear cover 4.

[0044] A release air inlet 42 passes through the brake rear cover 4 at the position corresponding to the release through hole 631. The release air inlet pipe 9 is installed in the release air inlet 42, and the release air inlet 42 communicates with the release through hole 631. In practical applications, the design of the release air inlet 42 facilitates the installation of the release air inlet pipe 9 on the brake rear cover 4.

[0045] In one embodiment, see Figure 1 and Figure 2O-rings (not shown in the figure) are provided between the brake rear cover 4 and the coaxial piston 62, between the coaxial piston 62 and the piston partition 63, between the brake clamping piston 61 and the piston partition 63, between the brake clamping piston 61 and the brake front cover 5, between the brake rear cover 4 and the piston partition 63, between the piston partitions 63 and 63, between the brake clamping piston 61 and the brake outer sleeve 3, and between the brake outer sleeve 3 and the brake rear cover 4. In practical applications, the use of O-rings improves the sealing effect.

[0046] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A hollow multi-layer air brake mechanism for a turntable, characterized in that, The device includes a hollow rotating connecting shaft, a brake seat, a brake sleeve mounted on the brake seat, and a hollow brake rear cover mounted on the brake sleeve. A hollow brake front cover is provided at the end of the brake sleeve away from the brake rear cover. A hollow brake drive assembly is provided between the brake rear cover and the brake front cover. A hollow disc assembly is provided between the brake drive assembly and the brake seat. A brake air intake pipe and a release air intake pipe are provided on the brake rear cover. The brake cover is provided with a release channel; Along the direction from the front brake cover to the rear brake cover, the brake drive assembly is sequentially provided with a hollow brake clamping piston and multiple hollow coaxial pistons. Hollow piston partitions are provided between the brake clamping piston and the coaxial pistons, and between adjacent coaxial pistons. The end of the brake clamping piston away from the piston partition passes through the front brake cover to one side of the disc assembly. Multiple brake through holes are penetrating the coaxial piston, and the brake through holes are connected to the brake intake pipe. Release through holes are penetrating the piston partitions, and the release channel is connected to the release intake pipe through the release through holes.

2. The hollow multi-layer air brake mechanism for a turntable as described in claim 1, characterized in that, The disc assembly includes multiple brake discs and multiple outer discs, which are arranged alternately. The brake discs are fixed on a rotating connecting shaft, and the outer discs are fixed on a brake seat.

3. The hollow multi-layer air brake mechanism for a turntable as described in claim 1, characterized in that, The coaxial piston has a venting ring groove on the side facing the brake cover, and the venting ring groove communicates with the brake through hole.

4. The hollow multi-layer air brake mechanism for a turntable as described in claim 1, characterized in that, The brake rear cover has a brake air intake hole through it at the position corresponding to the brake air intake pipe, and the brake air intake pipe is installed in the brake air intake hole.

5. The hollow multi-layer air brake mechanism for a turntable as described in claim 1, characterized in that, The brake rear cover has a release air inlet hole through the corresponding position of the release through hole, and the release air inlet pipe is installed in the release air inlet hole. The release air inlet hole is connected to the release through hole.

6. The hollow multi-layer air brake mechanism for a turntable as described in claim 1, characterized in that, O-rings are provided between the brake rear cover and the coaxial piston, between the coaxial piston and the piston partition, between the brake clamping piston and the piston partition, between the brake clamping piston and the brake front cover, between the brake rear cover and the piston partition, between the piston partition and the piston, between the brake clamping piston and the brake outer sleeve, and between the brake outer sleeve and the brake rear cover.

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