Three-disc brake structure of five-axis rotary table

Abstract

The utility model discloses a five-axis turntable three-disc brake structure, which relates to the field of machine tool braking, and adopts the technical scheme that the five-axis turntable three-disc brake structure comprises a base and a rotating shaft, the base is provided with a rotating hole, the rotating shaft is rotatably matched in the rotating hole, and the five-axis turntable three-disc brake structure is characterized in that the base on the periphery of the rotating hole is provided with an annular brake cavity; an air hole communicated with an air supply device is formed in the upper portion of the brake cavity, a lower brake pad is arranged at the bottom of the brake cavity, a piston is vertically matched with the upper portion of the brake cavity in a sliding mode, an upper brake pad is arranged on the lower side of the piston, and the rotating hole is provided with a transition channel extending to the lower portion of the brake cavity. A middle brake pad is fixed to the rotating shaft, and the outer edge of the middle brake pad extends to the position between the upper brake pad and the lower brake pad. The upper brake pad is controlled to slide downwards through the annular brake cavity, the lower brake pad is matched, the middle brake pad is clamped, the middle brake pad can be quickly braked, and the braking effect is very good.

Description

Technical Field

[0001] The utility model relates to a three-piece disc brake structure of a five-axis turntable, mainly relating to the field of machine tool braking. Background Art

[0002] High-end five-axis CNC machine tools have very high requirements for machining accuracy, and the corresponding braking requirements for the turntable are also relatively high. The currently common braking system drives a single brake pad by a piston to act on the brake pad of the rotating shaft, and this braking force is weak. Summary of the Utility Model

[0003] Aiming at the deficiencies of the above prior art, the utility model provides a three-piece disc brake structure of a five-axis turntable. By controlling the downward sliding of the upper brake pad through an annular brake cavity and cooperating with the lower brake pad to clamp the middle brake pad, the middle brake pad can be quickly braked, and the braking effect is very good.

[0004] To achieve the above object, the technical solution of the utility model is: including a base and a rotating shaft, the base is provided with a rotating hole, the rotating shaft is rotationally fitted in the rotating hole, and it is characterized in that an annular brake cavity is provided in the base around the rotating hole, an air hole communicated with a gas supply device is provided in the upper part of the brake cavity, a lower brake pad is provided at the bottom of the brake cavity, a piston is vertically slidably fitted in the upper part of the brake cavity, an upper brake pad is provided on the lower side of the piston, a transition channel extending to the lower part of the brake cavity is provided in the rotating hole, a middle brake pad is fixed on the rotating shaft, and the outer edge of the middle brake pad extends between the upper brake pad and the lower brake pad.

[0005] The technical principle and beneficial effects of the utility model are as follows:

[0006] In this solution, a brake cavity is provided in the base. By pressurizing the brake cavity, the piston is pushed to slide downward, and the upper brake pad, the middle brake pad and the lower brake pad are pushed to stick together to achieve the braking effect. By controlling the downward sliding of the upper brake pad through an annular brake cavity and cooperating with the lower brake pad to clamp the middle brake pad, the middle brake pad can be quickly braked, and then the rotating shaft in the middle can be braked. The braking effect is very good, and it is more stable and efficient.

[0007] Preferably, a return spring is provided between the piston and the brake cavity, and the return spring pushes the piston away from the middle brake pad. Through the return spring, the piston can be pushed upward, and then the upper brake pad and the middle brake pad can be separated to quickly release the brake.

[0008] Preferably, the return spring is provided between the piston and the bottom of the brake cavity. The installation position is more convenient for installation and disassembly.

[0009] Preferably, the brake chamber is provided with a column, and the upper brake pad and the lower brake pad are respectively connected to the column. The upper brake pad and the lower brake pad can be better fixed through the column.

[0010] Preferably, the column is threadedly fitted with an adjusting sleeve, and the upper brake pad and the lower brake pad are respectively circumferentially rotatable and axially non-slidable relative to the adjusting sleeve. The relative positions of the upper brake pad and the lower brake pad relative to the middle brake pad can be adjusted more conveniently through the adjusting sleeve.

[0011] Preferably, the column and the return spring are located in the non-boss region of the piston. It is convenient to set the positions of the column and the return spring.

[0012] Preferably, a sealing ring is provided between the piston and the brake chamber. The sealing performance of the piston can be improved. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only one of the drawings of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 It is a schematic diagram of an embodiment of the present invention.

[0015] Among them, base 1, rotating shaft 2, brake chamber 3, piston 4, upper brake pad 5, lower brake pad 6, return spring 7, column 8, adjusting sleeve 9, middle brake pad 10, sealing ring 11. Detailed Embodiments

[0016] The following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings. Obviously, the described embodiments are only the preferred embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0017] Embodiment

[0018] As Figure 1As shown in the figure, an embodiment of the present utility model includes a base 1 and a rotating shaft 2. The base 1 is provided with a rotating hole, and the rotating shaft 2 is rotationally fitted in the rotating hole. It is characterized in that an annular brake cavity 3 is provided on the base 1 around the rotating hole. An air hole communicating with an air supply device is provided at the upper part of the brake cavity 3. A lower brake pad 6 is provided at the bottom of the brake cavity 3. A piston 4 is vertically slidably fitted in the upper part of the brake cavity 3. An upper brake pad 5 is provided on the lower side of the piston 4. The rotating hole is provided with a transition channel extending to the lower part of the brake cavity 3. A middle brake pad 10 is fixed on the rotating shaft 2, and the outer edge of the middle brake pad 10 extends between the upper brake pad 5 and the lower brake pad 6.

[0019] In this solution, a brake cavity 3 is provided on the base 1. By pressurizing the brake cavity 3, the piston 4 is pushed to slide downward, and the upper brake pad 5, the middle brake pad 10 and the lower brake pad 6 are pushed to stick together to achieve the braking effect. By controlling the downward sliding of the upper brake pad 5 through the annular brake cavity 3 and clamping the middle brake pad 10, the middle brake pad 10 can be quickly braked, and then the middle rotating shaft 2 can be braked. The braking effect is very good, and it is more stable and efficient.

[0020] A return spring 7 is provided between the piston 4 and the brake cavity 3, and the return spring 7 pushes the piston 4 away from the middle brake pad 10. Through the return spring 7, the piston 4 can be pushed upward, so that the upper brake pad 5 is separated from the middle brake pad 10, and the braking is quickly released.

[0021] The return spring 7 is arranged between the piston 4 and the bottom of the brake cavity 3. The setting position is more convenient for installation and disassembly.

[0022] The brake cavity 3 is provided with a column 8, and the upper brake pad 5 and the lower brake pad 6 are respectively connected to the column 8. The upper brake pad and the lower brake pad 6 can be better fixed through the column 8.

[0023] The column 8 is threadedly fitted with an adjusting sleeve 9, and the upper brake pad 5 and the lower brake pad 6 can respectively rotate circumferentially relative to the adjusting sleeve 9 and cannot slide axially. The relative positions of the upper brake pad 5 and the lower brake pad 6 relative to the middle brake pad 10 can be adjusted more conveniently through the adjusting sleeve 9.

[0024] The column 8 and the return spring 7 are located in the non-boss area of the piston 4. It is convenient to set the positions of the column 8 and the return spring 7.

[0025] A sealing ring 11 is provided between the piston 4 and the brake cavity 3. The sealing performance of the piston 4 can be improved.

[0026] The upper brake pad 5, the middle brake pad 10 and the lower brake pad 6 are all made of manganese steel brake pads.

[0027] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A three-disc brake structure for a five-axis turntable, comprising a base (1) and a rotating shaft (2). The base (1) is provided with a rotating hole, and the rotating shaft (2) is rotatably fitted in the rotating hole. It is characterized in that, The base (1) around the rotation hole is provided with an annular brake cavity (3). An air hole communicating with an air supply device is arranged at the upper part of the brake cavity (3). A lower brake pad (6) is arranged at the bottom of the brake cavity (3). A piston (4) is vertically and slidably fitted in the upper part of the brake cavity (3). An upper brake pad (5) is arranged on the lower side of the piston (4). A transition channel extends to the lower part of the brake cavity (3) in the rotation hole. A middle brake pad (10) is fixed on the rotating shaft (2). The outer edge of the middle brake pad (10) extends between the upper brake pad (5) and the lower brake pad (6).

2. The three-piece disc brake structure of a five-axis turntable according to claim 1, wherein: A return spring (7) is arranged between the piston (4) and the brake cavity (3). The return spring (7) pushes the piston (4) away from the middle brake pad (10).

3. The three-piece disc brake structure of a five-axis turntable according to claim 2, characterized in that: The return spring (7) is arranged between the piston (4) and the bottom of the brake cavity (3).

4. A five-axis turntable three-piece disc brake structure according to claim 2, characterized in that: The brake cavity (3) is provided with a column (8). The upper brake pad (5) and the lower brake pad (6) are respectively connected with the column (8).

5. A three-disc brake structure of a five-axis turntable according to claim 4, characterized in that: The column (8) is threadedly fitted with an adjusting sleeve (9). The upper brake pad (5) and the lower brake pad (6) are respectively circumferentially rotatable and axially non-slidable relative to the adjusting sleeve (9).

6. A three-disc brake structure for a five-axis turntable according to claim 5, characterized in that: The column (8) and the return spring (7) are located in the non-boss area of the piston (4).

7. A five-axis turntable three-piece disc brake structure according to claim 1, characterized in that: A sealing ring (11) is arranged between the piston (4) and the brake cavity (3).

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