CN212020008U - Revolving shaft braking device and machine tool with same - Google Patents

Abstract

The utility model provides a revolving axle arresting gear and have its lathe, revolving axle arresting gear includes: the braking part is fixedly connected with the rotating shaft; the driving part comprises a driving part and a braking part, the driving part and the braking part are oppositely arranged, the braking part is positioned between the driving part and the braking part, the driving part is movably arranged, and the driving part is provided with an avoiding position and a braking position; when the driving piece is in the avoiding position, the driving piece is arranged to avoid the braking part, so that the braking part and the braking part are arranged at intervals; when the driving element is at the braking position, the braking part is abutted against the braking part under the pushing action of the driving element, so that the braking part and the rotating shaft stop moving through the friction between the braking part and the braking part; wherein, the drive part is a hydraulic drive structure. Through the technical scheme provided by the utility model, can solve among the prior art and carry out the relatively poor technical problem of stability of braking to the revolving axle.

Description

Revolving shaft braking device and machine tool with same

Technical Field

The utility model relates to a processing equipment technical field particularly, relates to a revolving axle arresting gear and have its lathe.

Background

At present, among the functional components in the prior art, a rotating shaft is a very common moving component, and the rotating shaft is often used for transmitting force, torque, rotating motion and the like. When certain machining requirements need to be met, such as machining of a specified angle plane of a workpiece, the rotating shaft is required to be clamped and loosened quickly.

However, in the clamping and loosening operation in the prior art, the insufficient rigidity of the transmission mechanism is easy to cause forced deformation, so that the vibration of the tool or the workpiece is caused, and the processing quality is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a revolving axle arresting gear and have its lathe to solve among the prior art and carry out the relatively poor technical problem of stability of braking to the revolving axle.

In order to achieve the above object, according to one aspect of the present invention, there is provided a swing shaft braking device including: the braking part is fixedly connected with the rotating shaft; the driving part comprises a driving part and a braking part, the driving part and the braking part are oppositely arranged, the braking part is positioned between the driving part and the braking part, the driving part is movably arranged, and the driving part is provided with an avoiding position and a braking position; when the driving piece is in the avoiding position, the driving piece is arranged to avoid the braking part, so that the braking part and the braking part are arranged at intervals; when the driving element is at the braking position, the braking part is abutted against the braking part under the pushing action of the driving element, so that the braking part and the rotating shaft stop moving through the friction between the braking part and the braking part; wherein, the drive part is a hydraulic drive structure.

Further, the brake portion is an annular brake pad, at least a portion of which is located between the actuating member and the brake member.

Further, the driving member is a piston, and the hydraulic driving structure includes: the oil cylinder is internally provided with an accommodating cavity and a circulation channel, and the circulation channel is communicated with the accommodating cavity so that liquid in the circulation channel flows into the accommodating cavity; the piston is movably arranged in the containing cavity, and the liquid in the circulating channel pushes the piston to move after entering the containing cavity so as to enable the piston to move to an avoiding position or a braking position.

Furthermore, the accommodating cavity comprises a first cavity and a second cavity, the piston comprises a first connecting section, a driving section and a second connecting section which are sequentially connected, the first connecting section and the driving section are arranged in the first cavity, the second connecting section is arranged in the second cavity, the first connecting section is matched with the first cavity in shape, and the second connecting section is matched with the second cavity; the cross-sectional dimension of the driving section is smaller than the flow area of the second cavity, so that liquid in a channel formed between the driving section and the second cavity pushes the driving section to move.

Furthermore, the first cavity is a cylindrical cavity, and the driving section is located in the cylindrical cavity, so that an annular channel is formed between the driving section and the cylindrical cavity.

Further, the hydraulic drive structure further includes: and the first sealing element is sleeved on the first connecting section and is positioned between the first connecting section and the inner wall of the first cavity.

Further, the hydraulic drive structure further includes: and the second sealing piece is sleeved on the second connecting section and is positioned between the second connecting section and the inner wall of the second cavity.

Further, the hydraulic drive structure further includes: the piece that resets, the setting is holding the intracavity, and the end that resets of piece that resets is used for promoting the piston and resets.

Further, the hydraulic drive structure further includes: the oil cylinder and the braking piece are arranged on the box body at intervals.

According to another aspect of the present invention, there is provided a machine tool, comprising: a rotating shaft; and the rotating shaft braking device is in driving connection with the rotating shaft and is the rotating shaft braking device provided above.

Use the technical scheme of the utility model, can drive the driving piece through the hydraulic drive structure steadily and move to dodging position or braking position to dodge or brake the braking portion through the driving piece when needs, the drive process is stable, has avoided cutter or work piece to take place vibrations, and then can guarantee processingquality. Therefore, through the utility model provides a technical scheme can solve among the prior art and carry out the relatively poor technical problem of stability of braking to the revolving axle.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a swing shaft brake device according to an embodiment of the present invention;

FIG. 2 shows an enlarged view of the left half of the structure of FIG. 1; and

fig. 3 shows an enlarged view of the right half structure of fig. 1.

Wherein the figures include the following reference numerals:

10. a brake section; 20. a drive section; 21. a drive member; 211. a first connection section; 212. a drive section; 213. a second connection section; 22. a stopper; 23. an oil cylinder; 231. an accommodating chamber; 232. a flow-through channel; 233. a cylinder body; 234. pressing a plate; 24. a first seal member; 25. a second seal member; 26. a reset member; 27. a box body; 271. an oil supply passage; 30. a rotating shaft; 40. a work bench.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 3, according to an aspect of the present invention, there is provided a swing shaft brake device, which includes a braking portion 10 and a driving portion 20, wherein the braking portion 10 is fixedly connected to a swing shaft 30, and the swing shaft 30 is a hollow shaft. The driving part 20 comprises a driving part 21 and a braking part 22, the driving part 21 is arranged opposite to the braking part 22, the braking part 10 is arranged between the driving part 21 and the braking part 22, the driving part 21 is movably arranged, and the driving part 21 has an avoiding position and a braking position. When the driving member 21 is in the retracted position, the driving member 21 is disposed away from the braking portion 10, so that the braking portion 10 and the braking member 22 are disposed at an interval. When the driving member 21 is at the braking position, the braking portion 10 is abutted against the braking member 22 by the pushing action of the driving member 21, so that the braking portion 10 is stopped by the friction torque generated by the friction between the braking member 22 and the braking portion 10, and the rotation shaft 30 is also stopped by the braking portion 10. The driving unit 20 is a hydraulic driving structure.

By adopting the revolving shaft braking device provided by the embodiment, under the hydraulic action of the hydraulic driving structure, the driving part 21 can be stably driven to move to the avoiding position or the braking position, so that the braking part 10 can be quickly avoided or braked through the driving part 21 when needed, the driving process of the hydraulic driving is stable, the vibration of a cutter or a workpiece is avoided, and the processing quality can be further ensured. Therefore, the rotation shaft braking device according to the present embodiment can solve the problem of poor stability of braking the rotation shaft 30 in the related art.

The clamping mode of the rotating shaft braking device in the embodiment has the advantages that the clamping mode is to realize quick release by pressure and quick clamping by pressure relief when in work, so that the rotating shaft 30 can be clamped under the condition of accident or sudden power failure, and the damage of a cutter or a workpiece caused by unexpected action of the rotating shaft 30 due to the self gravity or magnetic force can be effectively prevented, and huge economic loss is caused. Meanwhile, the processing quality and the processing precision can be effectively improved, the safety is guaranteed, the structural design in the embodiment can avoid the influence of impurities such as scrap iron, and the like, and the processing method has obvious advantages.

Specifically, the brake portion 10 in this embodiment is an annular brake pad, at least a portion of which is located between the driving member 21 and the braking member 22. Specifically, the edge of the annular brake pad is located between the actuator 21 and the brake member 22. For better braking of the braking portion 10, the braking member 22 in this embodiment is also of a ring structure, and the braking member 22 is disposed on the rotation shaft 30.

In the present embodiment, the driver 21 is a piston. The hydraulic driving structure further comprises an oil cylinder 23, the oil cylinder 23 comprises a cylinder body 233 and a pressure plate 234, and the pressure plate 234 is positioned at the lower part of the cylinder body 233. An accommodating cavity 231 and a flow passage 232 are arranged in the oil cylinder 23, and the flow passage 232 is communicated with the accommodating cavity 231, so that liquid in the flow passage 232 flows into the accommodating cavity 231. The piston is movably disposed in the accommodating chamber 231, and the liquid in the flow channel 232 enters the accommodating chamber 231 to push the piston to move, so that the piston moves to the avoiding position or the braking position. By adopting the structure, the piston can be conveniently and stably pushed to move to the avoiding position or the braking position. Specifically, in order to further improve the braking stability, the number of the pistons in the present embodiment may be plural, a plurality of piston rings are spaced around the circumference of the rotating shaft 30, a plurality of corresponding flow passages 232 are provided, and a plurality of accommodating cavities 231 are provided.

Specifically, the accommodating cavity 231 in this embodiment includes a first cavity and a second cavity, the piston includes a first connecting section 211, a driving section 212, and a second connecting section 213 that are connected in sequence, the first connecting section 211 and the driving section 212 are both disposed in the first cavity, the second connecting section 213 is disposed in the second cavity, the first connecting section 211 is adapted to the shape of the first cavity, and the second connecting section 213 is adapted to the second cavity. The cross-sectional dimension of the drive section 212 is smaller than the flow area of the second cavity such that liquid in the channel formed between the drive section 212 and the second cavity pushes the drive section 212 in motion. With this arrangement, the drive section 212 will be urged to move under the action of the liquid in the second chamber to move the piston to the retracted or braking position.

In order to further improve the braking stability, the first cavity is a cylindrical cavity, and the driving section 212 is located in the cylindrical cavity, so that an annular passage is formed between the driving section 212 and the cylindrical cavity. With this arrangement, the force applied to the driving section 212 can be made uniform to drive the driving section 212 to move stably.

In this embodiment, the hydraulic driving structure further includes a first sealing member 24, the first sealing member 24 is sleeved on the first connecting section 211, and the first sealing member 24 is located between the first connecting section 211 and the inner wall of the first cavity. Specifically, the first sealing element 24 may be an annular rubber ring to improve sealing performance and prevent liquid from flowing out of the first cavity.

Specifically, the hydraulic driving structure further includes a second sealing element 25, the second sealing element 25 is sleeved on the second connection section 213, and the second sealing element 25 is located between the second connection section 213 and the inner wall of the second cavity. Specifically, the second sealing element 25 may also be an annular rubber ring to improve sealing performance and prevent liquid from flowing out of the second cavity.

In this embodiment, the hydraulic driving structure further includes a reset member 26, the reset member 26 is disposed in the accommodating cavity 231, and a reset end of the reset member 26 is used for pushing the piston to reset. Specifically, the reset member 26 is used to reset the piston from the avoiding position to the braking position, and the reset member 26 may be a disc spring, a spring, or the like.

Specifically, the hydraulic drive structure in this embodiment further includes a tank 27, an oil supply channel 271 is disposed on the tank 27, the oil supply channel 271 is communicated with the circulation channel 232, and the oil cylinder 23 and the braking member 22 are disposed on the tank 27 at intervals. By adopting the structure, the compactness of the structure can be improved, and the structural layout is optimized. Specifically, the box body 27 in this embodiment is also of an annular structure, the box body 27 is sleeved on the rotating shaft 30, the box body 27 is provided with a plurality of oil supply channels 271, the plurality of oil supply channels 271 and the plurality of circulation channels 232 are arranged in a one-to-one correspondence, and each oil supply channel 271 is used for supplying oil to the corresponding circulation channel 232.

The second embodiment of the present invention provides a machine tool, which includes a rotating shaft 30 and a rotating shaft braking device, wherein the rotating shaft braking device is drivingly connected to the rotating shaft 30, and the rotating shaft braking device is the rotating shaft braking device provided in the first embodiment. The machine tool in the embodiment further comprises a workbench 40, the workbench 40 is fixed during installation, and other structures are positioned by taking the workbench 40 as a reference. Then the rotating shaft 30, the annular brake pad, the piston, the disc spring, the cylinder 23, the pressing plate 234, and the first and second sealing members 24 and 25 are installed in sequence. The first sealing element 24 and the second sealing element 25 are arranged on the periphery of the piston, the first sealing element 24, the second sealing element 25 and the oil cylinder 23 clamp the piston together, the disc spring is arranged below the piston, the oil cylinder 23 is connected with the pressing plate 234 through a bolt, the oil cylinder 23, the pressing plate 234, the piston and the disc spring form a cavity, the cavity and a hole drilled in the box body 27 form an oil path, the box body 27 is connected with the backing plate through a bolt, and high-pressure oil enters the oil path for pressure ventilation and pressure relief. The cylinder 23, the first seal 24, and the second seal 25 seal the piston contact portion. Wherein, the rotating shaft 30 and the brake block are connected with the workbench 40 through bolts to play a role of fixing and positioning.

When the product processing is started, the workpiece to be processed is positioned and clamped on the workbench 40, and the surfaces of the workpiece to be processed can be fully processed as the rotating shaft 30 and the workbench 40 rotate together. In case of an accident, the rotation of the table 40 is controlled by locking the rotary shaft 30 when the table 40 is stopped during machining of the workpiece. High-pressure oil enters the cavity through the oil way, the disc spring is compressed by the pressure transmitted by the piston, the piston is far away from the brake pad, the brake pad is loosened, and the rotating shaft 30 rotates normally. After pressure relief, the disc spring rebounds, the piston props against the brake pad, the brake pad is clamped tightly to generate friction force, the friction force torque is utilized to play a braking role, the rotating shaft 30 stops rotating, and the rotating shaft 30 can be effectively tightened and loosened through pressure relief and pressure relief of high-pressure oil to perform normal operation.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the rotary shaft is clamped or loosened quickly, and the processing quality and the processing precision are improved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A device for braking a rotating shaft, comprising:

the braking part (10), the braking part (10) is fixedly connected with the rotating shaft (30);

the brake device comprises a driving part (20), the driving part (20) comprises a driving part (21) and a braking part (22), the driving part (21) is arranged opposite to the braking part (22), the braking part (10) is positioned between the driving part (21) and the braking part (22), the driving part (21) is movably arranged, and the driving part (21) has an avoiding position and a braking position; when the driving piece (21) is in the avoiding position, the driving piece (21) is arranged to avoid the braking part (10) so that the braking part (10) and the braking part (22) are arranged at intervals; when the driving element (21) is in the braking position, the braking part (10) is abutted on the braking part (22) under the pushing action of the driving element (21) so as to stop the braking part (10) and the revolving shaft (30) from moving through the friction between the braking part (22) and the braking part (10);

wherein the driving part (20) is of a hydraulic driving structure.

2. The pivot brake assembly according to claim 1, characterized in that the brake portion (10) is an annular brake pad, at least part of which is located between the actuating member (21) and the brake member (22).

3. The swing shaft braking apparatus according to claim 1, wherein the driving member (21) is a piston, and the hydraulic driving structure comprises:

the oil cylinder (23), an accommodating cavity (231) and a circulation channel (232) are arranged in the oil cylinder (23), the circulation channel (232) is communicated with the accommodating cavity (231), so that liquid in the circulation channel (232) flows into the accommodating cavity (231); the piston is movably arranged in the containing cavity (231), and liquid in the flowing channel (232) enters the containing cavity (231) and pushes the piston to move so that the piston moves to the avoiding position or the braking position.

4. The revolving shaft braking device according to claim 3, characterized in that the accommodating cavity (231) comprises a first cavity and a second cavity, the piston comprises a first connecting section (211), a driving section (212) and a second connecting section (213) which are connected in sequence, the first connecting section (211) and the driving section (212) are both arranged in the first cavity, the second connecting section (213) is arranged in the second cavity, the first connecting section (211) is adapted to the shape of the first cavity, and the second connecting section (213) is adapted to the second cavity; the cross-sectional dimension of the driving section (212) is smaller than the flow area of the second cavity, so that the liquid in the channel formed between the driving section (212) and the second cavity pushes the driving section (212) to move.

5. The device according to claim 4, wherein said first chamber is a cylindrical cavity, and said driving section (212) is located in said cylindrical cavity such that an annular passage is formed between said driving section (212) and said cylindrical cavity.

6. The apparatus of claim 4, wherein said hydraulic drive arrangement further comprises:

a first sealing member (24) fitted over the first connection section (211), the first sealing member (24) being located between the first connection section (211) and an inner wall of the first cavity.

7. The apparatus of claim 4, wherein said hydraulic drive arrangement further comprises:

and the second sealing element (25) is sleeved on the second connecting section (213), and the second sealing element (25) is positioned between the second connecting section (213) and the inner wall of the second cavity.

8. The apparatus of claim 3, wherein said hydraulic drive arrangement further comprises:

the resetting piece (26) is arranged in the accommodating cavity, and the resetting end of the resetting piece (26) is used for pushing the piston to reset.

9. The apparatus of claim 3, wherein said hydraulic drive arrangement further comprises:

the oil cylinder is characterized by comprising a box body (27), wherein an oil supply channel (271) is arranged on the box body (27), the oil supply channel (271) is communicated with the circulation channel, and the oil cylinder (23) and the braking piece (22) are arranged on the box body (27) at intervals.

10. A machine tool, characterized in that it comprises:

a rotating shaft (30);

a device for braking a rotating shaft, which is drivingly connected to the rotating shaft (30), according to any one of claims 1 to 9.

Images