Brake locking mechanism

Abstract

The utility model provides a brake locking mechanism which comprises a cylinder body, a piston, a stator fixing disc and a brake pad, the piston is movably arranged in the cylinder body, and an elastic piece is arranged between the piston and the cylinder body; a stator fixing disc is connected with the cylinder body, an abutting part and an oil way are arranged on the stator fixing disc, and an oil cavity is formed between an outlet of the oil way and the piston; the brake pad is connected with the mandrel, and the brake pad is arranged between the piston and the abutting part; the piston has a braking state and an unlocking state; in the braking state, the piston is driven by the elastic force of the elastic piece to move towards the abutting portion till the brake pad is clamped by the piston and the abutting portion. And in the unlocking state, oil enters the oil way to push the piston to overcome the elastic force to loosen the brake pad. The elastic piece is a disc spring, the disc spring has the advantages of being fast in response, high in output force and the like, the deflection angle of the five-axis cradle rotary table under the conditions of power failure and sudden stop is effectively reduced, and the comprehensive cost of the locking mechanism is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tools, and particularly relates to a brake locking mechanism. Background Art

[0002] The five-axis cradle turntable is a kind of numerical control turntable and belongs to a common component for machine tool processing. Among them, the rotating shaft rotating around the X axis is defined as the A axis, and the rotating shaft rotating around the Z axis is defined as the C axis. Through the combination of the A axis and the C axis, the workpiece fixed on the output flange can meet the processing requirements.

[0003] At present, most five-axis cradle turntables use an active brake locking structure, that is, hydraulic pressure is introduced into the oil cylinder for locking. If this structure encounters situations such as power failure or emergency stop, the turntable will have a position yaw, which may cause unnecessary losses to customers. For this reason, although some five-axis cradle turntables increase zero-leakage hydraulic solenoid valve group units, UPS battery storage devices, etc., which can solve the yaw problem to a certain extent in case of sudden power failure or emergency stop, not all turntables can be effectively solved by this method, and it also increases the overall application cost of the five-axis turntable. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is that when the five-axis cradle turntable in the prior art encounters situations such as power failure or emergency stop, the turntable will have a position yaw.

[0005] For this purpose, the utility model provides a brake locking mechanism, including:

[0006] A cylinder block;

[0007] A piston, which is movably arranged in the cylinder block, and an elastic member is arranged between the piston and the cylinder block; a stator fixed disk, which is connected to the cylinder block, and an abutting portion and an oil passage are arranged on the stator fixed disk, and an oil cavity is arranged between the outlet of the oil passage and the piston;

[0008] A brake pad, which is connected to a core shaft, and the brake pad is arranged between the piston and the abutting portion;

[0009] Wherein, the piston has a braking state and an unlocking state;

[0010] In the braking state, the piston is driven by the elastic force of the elastic member to move towards the abutting portion until the brake pad is clamped between the piston and the abutting portion;

[0011] In the unlocking state, the oil inlet of the oil passage pushes the piston to overcome the elastic force and loosen the brake pad.

[0012] Optionally, in the unlocking state, there is a gap between the brake pad, the piston and the abutting portion.

[0013] Optionally, the brake locking mechanism further includes a brake pad pressing ring and a brake pad adjusting pad, which are clamped at the end of the brake pad and are both fixed to the mandrel.

[0014] Optionally, the elastic member is a disc spring.

[0015] Optionally, the brake locking mechanism further includes a positioning pin shaft, which is fixed to the cylinder block, and the disc spring is sleeved on the periphery of the positioning pin shaft.

[0016] Optionally, the brake locking mechanism further includes:

[0017] A first sealing ring, which is installed on the piston;

[0018] An adapting sealing ring, which is installed on the stator fixing plate;

[0019] The first sealing ring and the adapting sealing ring are arranged on both sides of the oil cavity.

[0020] Optionally, the adapting sealing ring is a Gleason ring.

[0021] Optionally, the brake locking mechanism further includes a second sealing ring, which is arranged at the connection between the cylinder block and the stator fixing plate.

[0022] Optionally, the brake locking mechanism further includes a guiding wear-resistant ring, which is connected to the piston, and the guiding wear-resistant ring is arranged between the periphery of the piston and the cylinder block.

[0023] Optionally, the brake locking mechanism is adapted to be connected to the motor, and the brake locking mechanism is arranged on the back side of the motor.

[0024] The brake locking mechanism provided by the present utility model has the following advantages:

[0025] 1. The present utility model provides a brake locking mechanism, including a cylinder block, a piston, a stator fixing plate and a brake pad. The piston is movably arranged in the cylinder block, and an elastic member is arranged between the piston and the cylinder block; the stator fixing plate is connected to the cylinder block, and an abutting portion and an oil passage are arranged on the stator fixing plate. An oil cavity is arranged between the outlet of the oil passage and the piston; the brake pad is connected to the mandrel, and the brake pad is arranged between the piston and the abutting portion; wherein, the piston has a braking state and an unlocking state; in the braking state, the piston is driven by the elastic force of the elastic member to move towards the abutting portion until the brake pad is clamped between the piston and the abutting portion; in the unlocking state, the oil inlet of the oil passage pushes the piston to overcome the elastic force and release the brake pad.

[0026] For the brake locking mechanism of this structure, in the unlocked state, there is a gap between the piston and the abutting part on the stator fixed disk. The top of the brake pad is fixedly connected to the core shaft, and the bottom of the brake pad is arranged within the gap between the piston and the abutting part on the stator fixed disk, enabling the core shaft to rotate freely. Among them, in order to separate the piston from the abutting part on the stator fixed disk, an oil circuit is arranged on the stator fixed disk. There is an oil cavity between the oil circuit outlet and the piston. When working, the oil inlet for releasing the brake is always supplied with oil. By providing pressure to the piston, the piston is made to overcome the elastic force of the elastic part and move away from the abutting part of the stator fixed disk, maintaining a gap between the two. When a sudden power failure or emergency stop occurs, the solenoid valve connected to the oil inlet for releasing the brake will suddenly change direction, causing the oil inlet for releasing the brake to stop supplying oil. The oil in the oil cavity flows back, reducing the pressure provided to the piston. The elastic part uses its elastic force to push the piston towards the abutting part until the two clamp the brake pad, achieving braking of the core shaft. The elastic part is a disc spring. The advantages of fast response and high output force of the disc spring are used to effectively reduce the yaw angle of the five-axis cradle turntable in case of power failure and emergency stop, and reduce the comprehensive cost of the locking mechanism.

[0027] 2. The present utility model provides a brake locking mechanism, which is adapted to be connected to a motor, and the brake locking mechanism is arranged on the back side of the motor.

[0028] For the brake locking mechanism of this structure, the whole set of brake locking mechanism is placed at the rear end of the motor 19, which is convenient for maintenance, installation and disassembly. Description of the Drawings

[0029] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a structural schematic view of the brake locking mechanism provided in the embodiment of the present utility model.

[0031] Description of the Reference Numerals:

[0032] 1 - Screw One;

[0033] 2 - Stator Fixed Disk;

[0034] 3 - Sealing Ring One;

[0035] 4 - Screw Two;

[0036] 5 - Sealing Ring Two;

[0037] 6 - Elastic Part;

[0038] 7 - Positioning pin shaft;

[0039] 8 - Screw three;

[0040] 9 - Cylinder block;

[0041] 10 - Sealing ring three;

[0042] 11 - Guide wear-resistant ring;

[0043] 12 - Brake pad compression ring;

[0044] 13 - Screw four;

[0045] 14 - Mandrel;

[0046] 15 - Brake pad adjustment pad;

[0047] 16 - Brake pad;

[0048] 17 - Piston;

[0049] 18 - Adapted sealing ring;

[0050] 19 - Motor;

[0051] 20 - Housing;

[0052] 21 - Brake release oil inlet. Detailed implementation mode

[0053] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0055] Embodiment

[0056] This embodiment provides a brake locking mechanism, which includes screw one 1, stator fixing disk 2, seal ring one 3, screw two 4, seal ring two 5, disc spring, positioning pin shaft 7, screw three 8, cylinder block 9, seal ring three 10, guide wear-resistant ring 11, brake pad pressing ring 12, screw four 13, core shaft 14, brake pad adjusting pad 15, brake pads 16, piston 17, adapter seal ring 18, motor 19 and housing 20.

[0057] In this embodiment, piston 17 is movably arranged in cylinder block 9. An elastic member 6 is provided between piston 17 and cylinder block 9. Stator fixing disk 2 is connected to cylinder block 9. The stator fixing disk 2 is provided with an abutting portion and an oil passage. An oil cavity is provided between the oil passage outlet and piston 17. Brake pads 16 are connected to core shaft 14. Brake pads 16 are arranged between piston 17 and the abutting portion. Among them, piston 17 has a braking state and an unlocking state. In the braking state, piston 17 is driven by the elastic force of elastic member 6 to move towards the abutting portion until it clamps brake pads 16 with the abutting portion. In the unlocking state, the oil in the oil passage enters to push piston 17 to overcome the elastic force and loosen brake pads 16.

[0058] In the unlocking state, there is a gap between piston 17 and the abutting portion on stator fixing disk 2. The top of brake pads 16 is fixedly connected to core shaft 14. The bottom of brake pads 16 is arranged in the gap between piston 17 and the abutting portion on stator fixing disk 2, so that core shaft 14 can rotate freely. Among them, in order to separate piston 17 from the abutting portion on stator fixing disk 2, an oil passage is arranged on stator fixing disk 2. An oil cavity is provided between the oil passage outlet and piston 17. When working, the brake release oil inlet 21 is always in oil passage. By providing pressure to piston 17, piston 17 is made to overcome the elastic force of elastic member 6 and move away from the abutting portion of stator fixing disk 2, keeping a gap between the two.

[0059] When sudden power failure or emergency stop occurs, the solenoid valve connected to brake release oil inlet 21 will suddenly change direction, resulting in the stop of oil passage at brake release oil inlet 21. The oil in the oil cavity flows back, reducing the pressure provided to piston 17. Elastic member 6 pushes piston 17 towards the abutting portion by its elastic force until the two clamp brake pads 16, realizing the braking of core shaft 14.

[0060] In this embodiment, elastic member 6 is a disc spring. The advantages of fast response and high output force of the disc spring are effectively used to reduce the yaw angle of the five-axis cradle turntable in case of power failure and emergency stop, and reduce the comprehensive cost of the locking mechanism.

[0061] As Figure 1 shown, positioning pin shaft 7 is fixed to cylinder block 9 through screw three 8. The disc spring is sleeved on positioning pin shaft 7.

[0062] In this embodiment, brake pad pressing ring 12 and brake pad adjusting pad 15 are clamped at the end of brake pads 16 and are both fixed to core shaft 14. Specifically, asFigure 1 As shown, the brake pad pressing ring 12, the brake pad 16, and the brake pad adjusting pad 15 are sequentially fixed to the mandrel 14 by the third screw 8. The brake pad adjusting pad 15 is arranged inside the brake pad 16 to ensure that there is a gap between the brake pad 16 and the abutting portion in the unlocked state.

[0063] In this embodiment, the first sealing ring 3 is installed on the piston 17, and the mating sealing ring 18 is installed on the stator fixing plate 2. The first sealing ring 3 and the mating sealing ring 18 are arranged on both sides of the oil chamber. The two seals of the first sealing ring 3 and the mating sealing ring 18 are used to seal the oil chamber to prevent oil leakage in the oil chamber when oil enters through the oil inlet 21 for releasing the brake. Among them, the mating sealing ring 18 is a Gleitring.

[0064] In this embodiment, the second sealing ring 5 is arranged at the connection between the cylinder block 9 and the stator fixing plate 2, and the second sealing ring 5 is arranged at the contact between the upper part of the cylinder block 9 and the piston 17. The third sealing ring 10 and the second sealing ring 5 are used to prevent oil from leaking to the outside of the components, and at the same time prevent water and contaminants from the outside from entering the brake.

[0065] In this embodiment, the guiding wear-resistant ring 11 is connected to the piston 17, and the guiding wear-resistant ring 11 is arranged between the circumferential side of the piston 17 and the cylinder block 9 to play a role of supporting and guiding.

[0066] For the brake locking mechanism provided in this embodiment, the cylinder block 9 is fixed to the stator fixing plate 2 by the second screw 4. In the natural state, the cylinder block 9, the stator fixing plate 2, and the piston 17 compress the elastic member 6, so that the piston 17 presses against the brake pad 16, causing the brake pad 16 to elastically deform and press against the stator fixing plate 2 to achieve the purpose of passive braking. When the shaft cradle turntable (mandrel 14) needs to rotate, oil is passed through the oil inlet 21 for releasing the brake, so that the piston 17 moves away from the brake pad 16, further compressing the elastic member 6, and the brake pad 16 rebounds to the initial state, that is, a gap state is maintained between the brake pad 16 and the stator fixing plate 2 and the piston 17, achieving the purpose of releasing the brake, and the turntable can rotate normally. When the turntable is working, the oil inlet 21 for releasing the brake is always passing oil to keep the brake in the released state. When the turntable encounters sudden power failure or emergency stop, the solenoid valve will suddenly change direction, resulting in the oil inlet 21 for releasing the brake to stop passing oil. At the same time, the compressed elastic member 6 will quickly push the piston 17 to move towards the direction of pressing the brake pad 16, causing the brake pad 16 to press against the end face of the stator fixing plate 2, achieving the purpose of rapid braking, stopping the turntable from yawing, and achieving the purpose of protecting parts and reducing customer losses. The entire set of brake locking mechanism is placed at the rear end of the motor 19, which is convenient for maintenance, installation, and disassembly.

[0067] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of this utility model creation.

Claims

1. A brake locking mechanism, characterized in that, Comprising: Cylinder block (9); Piston (17), movably arranged within the cylinder block (9), with an elastic member (6) provided between the piston (17) and the cylinder block (9); Stator fixing plate (2), connected to the cylinder block (9), the stator fixing plate (2) being provided with an abutting portion and an oil passage, and an oil chamber being provided between the outlet of the oil passage and the piston (17); Brake pad (16), connected to the core shaft (14), the brake pad (16) being arranged between the piston (17) and the abutting portion; Wherein, the piston (17) has a braking state and an unlocking state; In the braking state, the piston (17) is driven by the elastic force of the elastic member (6) to move towards the abutting portion until the brake pad (16) is clamped between the piston (17) and the abutting portion; In the unlocking state, the oil inlet of the oil passage pushes the piston (17) to overcome the elastic force and release the brake pad (16).

2. The brake locking mechanism according to claim 1, characterized in that In the unlocking state, there is a gap between the brake pad (16), the piston (17), and the abutting portion.

3. The brake locking mechanism according to claim 2, wherein, It further includes a brake pad pressing ring (12) and a brake pad adjusting pad (15), the brake pad pressing ring (12) and the brake pad adjusting pad (15) being clamped at the end of the brake pad (16) and both being fixed to the core shaft (14).

4. The brake locking mechanism according to claim 1, characterized in that, The elastic member (6) is a disc spring.

5. The brake locking mechanism according to claim 4, characterized in that, It further includes a positioning pin shaft (7), fixed to the cylinder block (9), and the disc spring is sleeved on the periphery of the positioning pin shaft (7).

6. The brake locking mechanism according to claim 1 or 4, characterized in that, It further includes: Sealing ring one (3), installed on the piston (17); Adapter sealing ring (18), installed on the stator fixing plate (2); The sealing ring one (3) and the adapter sealing ring (18) are arranged on both sides of the oil chamber.

7. The brake locking mechanism according to claim 6, characterized in that, The adapter sealing ring (18) is a Gleitring.

8. The brake locking mechanism according to claim 6, wherein, It further includes a sealing ring two (5), arranged at the connection between the cylinder block (9) and the stator fixing plate (2).

9. The brake locking mechanism according to claim 1 or 4, characterized in that It further includes a guiding wear-resistant ring (11), connected to the piston (17), the guiding wear-resistant ring (11) being arranged between the periphery of the piston (17) and the cylinder block (9).

10. The brake locking mechanism according to claim 1 or 4, characterized in that The brake locking mechanism is adapted to be connected to the motor (19), and the brake locking mechanism is arranged on the back side of the motor (19).

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