CN219452727U

CN219452727U - A tight arresting gear of stopping for numerical control revolving stage

Info

Publication number: CN219452727U
Application number: CN202320449533.2U
Authority: CN
Inventors: 张娜; 刘恺; 吴广新
Original assignee: Yantai Nanjing University Of Technology Global Intelligent Equipment Co ltd
Current assignee: Yantai Nanjing University Of Technology Global Intelligent Equipment Co ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-08-01
Anticipated expiration: 2033-03-10

Abstract

The utility model relates to the technical field of rotary tables, in particular to a tightening and braking device for a numerical control turntable, which comprises a braking fixed base, a piston, a lever support, a braking pressing plate and at least one braking sheet, wherein the piston is connected with the braking pressing plate through a locking component; the locking assembly comprises a gland fixed at the end part of the piston, a spring A is arranged between the bottom end of the gland and the brake pressing plate, and the spring A is sleeved on the piston. The brake pressure plate can be provided with a cylindrical groove, and the bottom end of the spring A is embedded into the cylindrical groove. With this effect through gland and spring A for brake clamp plate and locking subassembly remain dynamic compaction state throughout, when guaranteeing the motion nimble between spherical packing ring and the brake clamp plate, avoided the emergence of interference problem, and can also reduce the processing cost of piston.

Description

A tight arresting gear of stopping for numerical control revolving stage

Technical Field

The utility model relates to the technical field of rotary tables, in particular to a tightening and braking device for a numerical control turntable.

Background

The utility model patent CN104613104A of China is a locking braking device, which mainly comprises a braking fixed base, wherein a braking hydraulic oil inlet pipeline and a piston cavity are arranged in the braking fixed base, and the piston cavity is communicated with the braking hydraulic oil inlet pipeline; the piston comprises a piston head and a stepped piston rod, the piston head is arranged in the piston cavity, the stepped piston rod is fixedly connected with the piston head, and the piston moves in the piston cavity along the axial direction of the stepped piston rod under the action of hydraulic oil in a brake hydraulic oil inlet pipeline; the lever support is fixedly connected to the brake fixing base; the brake pressing plate is hinged to the lever support and connected with the stepped piston rod, so that the axial movement of the stepped piston rod drives the brake pressing plate to rotate; at least one brake pad, each brake pad is provided with a braking end connected with a part to be braked and a friction end clamped between the brake fixing base and the brake pressing plate. The piston head is connected with the brake pressing plate through a nut; a small spring or a disc spring is arranged between the stepped piston rod and the lever support. The device can realize high-power braking with low-power input, can compensate micro deformation generated during braking, and improves precision. However, during use, there are the following problems:

1) The processing cost of the screw thread and the through hole of the piston head is high, and the assembly is complex.

2) In order to flexibly move between the spherical joint and the brake pressing plate, the nut and the brake pressing plate cannot be compacted, so that the uncertainty of the position adjustment operation is large, and interference is easy to occur.

3) When the piston is released, the piston dead weight and the small spring or the disc spring are used for releasing, and the brake pressing plate is used for releasing by dead weight, so that the condition that the brake pressing plate is blocked and fixed sometimes occurs.

Accordingly, there is a need for an improvement in the locking brake apparatus to solve the above-described problems.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings in the prior art, and provides the tightening and braking device for the numerical control turntable, which can avoid the situation that a braking pressing plate is blocked and is not movable, and is convenient to install and low in cost.

In order to achieve the aim, the utility model provides a tightening and braking device for a numerical control turntable, which comprises a braking fixed base, a piston, a lever support, a braking pressing plate and at least one braking sheet, wherein the piston is connected with the braking pressing plate through a locking component; the locking assembly comprises a gland fixed at the end part of the piston, a spring A is arranged between the bottom end of the gland and the brake pressing plate, and the spring A is sleeved on the piston.

Further, the gland is bolted to the piston by a cylindrical head screw.

Further, a spherical washer is arranged between the bottom end of the brake pressing plate and the piston; the spherical washer is in coaxial clearance fit with the piston; the bottom of the brake pressing plate is provided with a spherical surface matched with the spherical washer.

Further, a cylinder body is hermetically embedded between the piston and the brake fixing base, an oil cavity A and an oil cavity B are arranged in the cylinder body, a loosening oil port is arranged on the side face of the oil cavity A, and a tightening oil port is arranged at the bottom of the oil cavity B; the tightening oil port and the loosening oil port are both arranged on the cylinder body; when the oil cavity A and the oil cavity B are respectively filled with oil, the piston can slide in the cylinder body in a sealing way.

Further, a sealing sleeve is arranged at the top of the oil cavity A, the sealing sleeve is in sealing connection with the inner wall of the cylinder body, and the sealing sleeve is in sealing connection with the lever support; the piston sealingly slidably passes through the sealing sleeve.

Further, a plurality of springs B are arranged between the bottom end of the sealing sleeve and the piston, and one ends of the springs B are embedded into grooves on the piston.

Further, the brake pressing plate is rotationally connected with the lever support through a pin shaft; the pin shaft is subjected to position limiting through a set screw; the set screw is disposed on the lever support.

Further, a plurality of annular sealing rings A are arranged between the sealing sleeve and the piston.

Further, a plurality of annular sealing rings B are arranged between the cylinder body and the piston.

Further, the spring B is one of a cylindrical spiral spring and a disc spring.

Compared with the prior art, the utility model has the beneficial effects that: through the action of the gland and the spring A, when the brake pad is loosened or braked, the brake pressing plate and the locking assembly always keep a dynamic compaction state, so that the spherical gasket and the brake pressing plate are ensured to move flexibly, the interference problem is avoided, and the processing cost of the piston is reduced; secondly, through setting up the cylinder body, adopt hydraulic oil to promote the piston motion when the brake block is released, avoided spring B to lead to the fact the condition emergence that the brake clamp plate blocked motionless because of the resilience is not thorough.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Wherein: 1. a brake fixing base; 2. a piston; 3. a lever support; 4. a brake pressure plate; 5. a brake pad; 6. a cylinder; 7. sealing sleeve; 8. a locking assembly; 21. a sealing ring B; 22. a spring B; 41. a pin shaft; 42. a set screw; 61. an oil cavity A; 62. an oil cavity B; 63. a tightening oil port; 64. loosening an oil port; 71. a sealing ring A; 81. a spring A; 82. a gland; 83. cylindrical head screw; 84. spherical washers.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

Referring to fig. 1, the utility model provides a brake device for a numerical control turntable, which comprises a brake fixing base 1, a piston 2, a lever support 3, a brake pressing plate 4 and at least one brake pad 5, wherein the piston 2 is connected with the brake pressing plate 4 through a locking component 8; the locking assembly 8 comprises a gland 82 fixed at the end part of the piston 2, a spring A81 is arranged between the bottom end of the gland 82 and the brake pressure plate 4, and the spring A81 is sleeved on the piston 2. The brake pressure plate 4 may be provided with a cylindrical groove, in which the bottom end of the spring a81 is embedded.

Preferably, the gland 82 is bolted to the piston 2 by means of a cylindrical head screw 83.

Preferably, a spherical washer 84 is arranged between the bottom end of the brake pressure plate 4 and the piston 2; the spherical washer 84 is in coaxial clearance fit with the piston 2; the bottom end of the brake pressure plate 4 is provided with a spherical surface matched with the spherical washer 84.

As an embodiment of the utility model, a cylinder body 6 is hermetically embedded between a piston 2 and a brake fixing base 1, an oil cavity A61 and an oil cavity B62 are arranged in the cylinder body 6, a loosening oil port 64 is arranged on the side surface of the oil cavity A61, and a tightening oil port 63 is arranged at the bottom of the oil cavity B62; the tightening oil port 63 and the loosening oil port 64 are both arranged on the cylinder body 6; when the oil chamber a61 and the oil chamber B62 are respectively filled with oil, the piston 2 can slide in the cylinder 6 in a sealing manner.

Preferably, the top of the oil cavity A61 is provided with a sealing sleeve 7, the sealing sleeve 7 is in sealing connection with the inner wall of the cylinder body 6, and the sealing sleeve 7 is in sealing connection with the lever support 3; the piston 2 is sealingly slidably passed through the sealing sleeve 7.

Preferably, a plurality of springs B22 are arranged between the bottom end of the sealing sleeve 7 and the piston 2, and one ends of the springs B22 are embedded in grooves on the piston 2.

Preferably, the brake pressure plate 4 is rotatably connected with the lever support 3 through a pin 41; the pin 41 is limited in position by a set screw 42; a set screw 42 is provided on the lever support 3. Specifically, gaps exist between two sides of the brake pressing plate 4 and the lever support 3, the pin shaft 41 penetrates through the lever support 3 and the brake pressing plate 4, and the portion, located in the lever support 3, of the pin shaft 41 is limited through the set screw 42.

Preferably, a plurality of annular sealing rings A71 are arranged between the sealing sleeve 7 and the piston 2.

Preferably, a plurality of annular sealing rings B21 are arranged between the cylinder body 6 and the piston 2.

Preferably, the spring B22 is one of a cylindrical coil spring and a disc spring.

The working process of the utility model comprises the following steps:

when the oil is introduced into the tightening oil port 63, the oil cavity B62 is filled with oil and pushes the piston 2 to move upwards, the spring B22 is compressed, the spherical surface of the spherical washer 84 is propped against the brake pressing plate 4, and the brake pressing plate 4 can rotate around the pin 41 for a small angle under the limitation of the spherical washer 84 and the pin 41 and compress the brake pad 5 because the contact surface of the brake pressing plate 4 and the spherical washer 84 is spherical and the brake pressing plate 4 is hinged on the lever support 3.

When the oil port 64 is loosened and oil is filled, the oil cavity A61 is filled with oil and pushes the piston 2 to move downwards, the spring B22 assists in pushing the piston 2 to move downwards, the piston 2 drives the gland 82 to move downwards, the spring A81 below the gland 82 is pressed and then drives the brake pressing plate 4 to move, and the brake pad 5 can rotate around the pin 41 by a small angle under the restriction of the spherical washer 84 and the pin 41 and is loosened. The utility model can automatically adapt to the interference caused by the angle deflection during the tightening by the action of the spring A81 and the gland 82 and the arrangement of the cylinder body 6, overcomes the phenomena of loose locking and loose braking, and has the advantage of high reliability.

The present utility model may be summarized in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, the above-described embodiments of the present utility model are to be considered in all respects only as illustrative of the present utility model. And not as limiting the utility model, the scope of the utility model is indicated by the appended claims, and any changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The braking device for the numerical control turntable comprises a braking fixed base (1), a piston (2), a lever support (3), a braking pressing plate (4) and at least one braking sheet (5), and is characterized in that the piston (2) is connected with the braking pressing plate (4) through a locking component (8); the locking assembly (8) comprises a gland (82) fixed at the end part of the piston (2), a spring A (81) is arranged between the bottom end of the gland (82) and the brake pressure plate (4), and the spring A (81) is sleeved on the piston (2).

2. The tight brake according to claim 1, characterized in that the gland (82) is bolted to the piston (2) by means of a cylindrical head screw (83).

3. The tight brake device according to claim 2, characterized in that a spherical washer (84) is arranged between the bottom end of the brake pressure plate (4) and the piston (2); the spherical washer (84) is in coaxial clearance fit with the piston (2); the bottom end of the brake pressing plate (4) is provided with a spherical surface matched with the spherical washer (84).

4. A tightening brake according to any one of claims 1 to 3, characterized in that a cylinder (6) is sealed and embedded between the piston (2) and the brake fixing base (1), an oil cavity a (61) and an oil cavity B (62) are arranged in the cylinder (6), a loosening oil port (64) is arranged on the side surface of the oil cavity a (61), and a tightening oil port (63) is arranged at the bottom of the oil cavity B (62); the tightening oil port (63) and the loosening oil port (64) are both arranged on the cylinder body (6); when the oil cavity A (61) and the oil cavity B (62) are respectively filled with oil, the piston (2) can slide in the cylinder body (6) in a sealing way.

5. The tight brake device according to claim 4, characterized in that a sealing sleeve (7) is arranged at the top of the oil cavity a (61), the sealing sleeve (7) is in sealing connection with the inner wall of the cylinder (6), and the sealing sleeve (7) is in sealing connection with the lever support (3); the piston (2) passes through the sealing sleeve (7) in a sealing sliding manner.

6. The tight brake device according to claim 5, characterized in that a plurality of springs B (22) are arranged between the bottom end of the sealing sleeve (7) and the piston (2), and one end of the springs B (22) is embedded in a groove on the piston (2).

7. The tightening brake according to claim 5, characterized in that the brake pressure plate (4) is rotatably connected to the lever support (3) by means of a pin (41); the pin shaft (41) is used for limiting the position through a set screw (42); the set screw (42) is arranged on the lever support (3).

8. The tight brake according to claim 5, characterized in that a number of annular sealing rings a (71) are arranged between the sealing sleeve (7) and the piston (2).

9. The tight brake according to claim 5, characterized in that a number of annular sealing rings B (21) are arranged between the cylinder (6) and the piston (2).

10. The tight brake apparatus according to claim 6, wherein the spring B (22) is one of a cylindrical coil spring and a disc spring.