C-axis brake locking device

Abstract

The utility model relates to the technical field of machine tool manufacturing, in particular to a C-axis brake locking device which comprises an installation frame and a brake shoe. The brake shoes are symmetrically arranged on the inner side of the mounting frame left and right, and the lower ends of the brake shoes are hinged to the supporting plate; the friction plate is fixed on the inner side wall of the brake shoe; one end of the return spring is hung on the outer side of the upper end of the brake shoe, and the other end of the return spring is connected with the mounting frame; the guide rod is arranged above the brake shoe, and the upper end of the guide rod is fixedly connected with the mounting frame; the pressing block is slidably connected with the guide rod in an inserted mode, and the inner wall of the pressing block abuts against the brake shoe. The electric cylinder is fixed to the middle position of the top face of the mounting frame. By improving the C-shaft braking and locking device, the C-shaft braking and locking device has the advantages of being simple in structure, high in response speed and adjustable in braking force, and therefore the problems and defects in the prior art and equipment are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool manufacturing technology, and more specifically, to a C-axis braking and locking device. Background Technology

[0002] The C-axis is an important concept in CNC programming and machining. It represents a rotary axis, which is an axis that rotates around the Z-axis. The C-axis is usually used to control the rotary motion in machining processes such as turning, milling, and drilling. When machining parts, sometimes a locking device is needed to fix them and maintain the stability of the machining process.

[0003] In the utility model patent CN214053667U, a machine tool spindle locking device is used, which uses two motors on both sides to drive the worm gear to drive the clamping plate to lock the spindle. This uses two motors, which is costly. In addition, the device has a long response time due to the multiple transmissions through the worm gear and screw.

[0004] In view of this, we have studied and improved the existing problems to provide a C-axis braking and locking device, which aims to solve the problems and improve the practical value through this technology. Utility Model Content

[0005] The purpose of this invention is to provide a C-axis braking and locking device to solve the problems and deficiencies mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a C-axis braking and locking device, which is accomplished by the following specific technical means:

[0007] A C-axis brake locking device includes: a mounting frame, a support plate, brake shoes, friction pads, a return spring, a pressure block, a guide rod, an electric cylinder, an adjusting rod, and a locking nut. The support plate is symmetrically fixed at the middle position of the bottom of the mounting frame. The brake shoes are symmetrically arranged on the inner side of the mounting frame, and the lower end of the brake shoes is hinged to the support plate. The friction pads are fixed on the inner side wall of the brake shoes. One end of the return spring is hung on the outer side of the upper end of the brake shoes, and the other end of the return spring is connected to the mounting frame. The guide rod is arranged above the brake shoes, and the upper end of the guide rod is fixedly connected to the mounting frame. The pressure block is slidably inserted into the guide rod, and the inner wall of the pressure block abuts against the brake shoes. The electric cylinder is fixed at the middle position of the top surface of the mounting frame. The upper end of the adjusting rod is fixed to the telescopic end of the adjusting rod by a threaded rotation, and the lower end of the adjusting rod passes through the pressure block, and the pressure block is fixed by a locking nut.

[0008] As a further optimization of this technical solution, the brake shoe of the C-axis braking locking device of this utility model is a semi-circular strip structure, and the upper end of the semi-circular strip structure is provided with a block structure with an outer inclined surface.

[0009] As a further optimization of this technical solution, the pressure block of the C-axis braking locking device of this utility model is a block structure with an isosceles trapezoidal groove in the middle, and the pressure block has a circular hole through which the guide rod and the adjusting rod pass.

[0010] As a further optimization of this technical solution, the return spring of the C-axis braking locking device of this utility model is provided in two places.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0012] 1. The present invention features a sliding connection between the pressure block and the guide rod, with the inner wall of the pressure block abutting against the brake shoe. The pressure block is driven to move downward by an electric cylinder, causing the upper end of the brake shoe to move inward. The friction plate clamps the C-axis and locks the C-axis. The structure is simple and the response speed is fast.

[0013] 2. The upper end of the adjusting rod of this utility model is fixed to the telescopic end of the adjusting rod by a threaded rotation, and the lower end of the adjusting rod passes through the pressure block. The pressure block is fixed by a locking nut. When the friction plate becomes thinner after a period of use, the position of the pressure block on the adjusting rod can be adjusted by turning the locking nut to keep the braking force constant.

[0014] 3. This utility model improves the C-axis braking locking device, which has the advantages of simple structure, fast response speed and adjustable braking force, thus effectively solving the problems and shortcomings in the existing technology and equipment. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the brake shoe and pressure block structure of this utility model.

[0018] In the diagram: 1. Mounting bracket; 2. Support plate; 3. Brake shoe; 4. Friction pad; 5. Return spring; 6. Pressure block; 7. Guide rod; 8. Electric cylinder; 9. Adjusting rod; 10. Locking nut. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 2 This utility model provides a specific technical implementation scheme for a C-axis braking and locking device:

[0021] A C-axis brake locking device includes: a mounting bracket 1, a support plate 2, a brake shoe 3, a friction pad 4, a return spring 5, a pressure block 6, a guide rod 7, an electric cylinder 8, an adjusting rod 9, and a locking nut 10. The support plate 2 is symmetrically fixed at the middle position of the bottom of the mounting bracket 1. The brake shoes 3 are symmetrically arranged on the inner side of the mounting bracket 1, and the lower end of the brake shoes 3 is hinged to the support plate 2. The brake shoes 3 are semi-circular strip structures, and the upper end of the semi-circular strip structure has a block structure with an outer inclined surface. The friction pad 4 is fixed on the inner wall of the brake shoes 3, and the C-axis is locked by contacting the surface of the C-axis through the friction pad 4. One end of the return spring 5 is hung on the outer side of the upper end of the brake shoes 3, and the other end of the return spring 5 is connected to the mounting bracket 1. The return spring 5 is provided in two places, and the elastic force of the return spring 5 resets the brake shoes 3. The guide rod 7 is provided on the brake shoes 1. Above the brake shoe 3, and the upper end of the guide rod 7 is fixedly connected to the mounting bracket 1; the pressure block 6 is a block structure with an isosceles trapezoidal groove in the middle, and a round hole is opened on the pressure block 6 to pass through the guide rod 7 and the adjusting rod 9; the pressure block 6 and the guide rod 7 are slidably inserted, and the inner wall of the pressure block 6 abuts against the brake shoe 3; the electric cylinder 8 is fixed in the middle position of the top surface of the mounting bracket 1; the electric cylinder 8 drives the pressure block 6 to move downward, and the pressure block 6 causes the upper end of the brake shoe 3 to move inward, the friction plate 4 clamps the C-axis, and locks the C-axis. The structure is simple and the response speed is fast; the upper end of the adjusting rod 9 is fixed to the telescopic end of the adjusting rod 9 by screw rotation, and the lower end of the adjusting rod 9 passes through the pressure block 6, and the pressure block 6 is fixed by the locking nut 10. When the friction plate 4 becomes thinner after a period of use, the position of the pressure block 6 on the adjusting rod 9 can be adjusted by turning the locking nut 10 to keep the braking force unchanged.

[0022] Specific implementation steps:

[0023] In use, the electric cylinder 8 extends, driving the pressure block 6 to move downward. The pressure block 6 brings the upper ends of the brake shoes 3 closer together, and the friction plate 4 locks the C-shaft. When the C-shaft needs to rotate, the electric cylinder 8 retracts, the pressure block 6 rises, and the return spring 5 pulls the brake shoes 3 back to their original position, allowing the C-shaft to rotate. When the friction plate 4 becomes thinner, the locking nut 10 is tightened to move the pressure block 6 downward a certain distance, which can adjust the distance at which the brake shoes 3 retract inward and maintain the locking force of the C-shaft.

[0024] In summary, this C-axis braking locking device features a sliding connection between a pressure block and a guide rod, with the inner wall of the pressure block abutting against the brake shoe. An electric cylinder drives the pressure block downwards, causing the upper end of the brake shoe to move inwards. The friction pad clamps the C-axis, locking it in place. The device boasts a simple structure and fast response. The upper end of an adjusting rod is threaded and fixed to the telescopic end of the adjusting rod, while the lower end of the adjusting rod passes through the pressure block, which is then secured by a locking nut. As the friction pad thins over time, the position of the pressure block on the adjusting rod can be adjusted by tightening the locking nut, maintaining a constant braking force. This invention, through improvements to the C-axis braking locking device, offers advantages such as simple structure, fast response, and adjustable braking force, effectively solving the problems and shortcomings of existing technologies and equipment.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A C-axis brake lock-up device comprising: Mounting frame (1), support plate (2), brake shoe (3), friction plate (4), return spring (5), pressing block (6), guide rod (7), electric cylinder (8), adjusting rod (9), locking nut (10), characterized in that: the support plate (2) is symmetrically fixed in the middle position of the bottom of the mounting frame (1); the brake shoe (3) is symmetrically arranged on the inner side of the mounting frame (1), and the lower end of the brake shoe (3) is hingedly connected with the support plate (2); the friction plate (4) is fixed on the inner side wall of the brake shoe (3); one end of the return spring (5) is hung on the outer side of the upper end of the brake shoe (3), and the other end of the return spring (5) is connected with the mounting frame (1); the guide rod (7) is arranged above the brake shoe (3), and the upper end of the guide rod (7) is fixedly connected with the mounting frame (1); the pressing block (6) is slidingly inserted with the guide rod (7), and the inner wall of the pressing block (6) abuts against the brake shoe (3); the electric cylinder (8) is fixed in the middle position of the top surface of the mounting frame (1); the upper end of the adjusting rod (9) is fixedly screwed in the telescopic end of the adjusting rod (9), and the lower end of the adjusting rod (9) penetrates the pressing block (6), and the pressing block (6) is fixed by the locking nut (10).

2. A C-axis brake lock apparatus according to claim 1, characterized in that: The brake shoe (3) is a semicircular strip structure, and the upper end of the semicircular strip structure is provided with a block structure with a beveled outer side.

3. A C-axis brake lock apparatus according to claim 1, wherein: The pressing block (6) is a block structure with an isosceles trapezoidal slot in the middle, and a circular hole is formed in the pressing block (6) to penetrate the guide rod (7) and the adjusting rod (9).

4. A C-axis brake lock apparatus according to claim 1, wherein: The return spring (5) is provided with two parts.

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