CN210499540U

CN210499540U - Small machine type improved U-shaft

Info

Publication number: CN210499540U
Application number: CN201921126042.4U
Authority: CN
Inventors: 杨子星; 姜建春; 汤超
Original assignee: Changzhou Curve Cnc Technology Co Ltd
Current assignee: Changzhou Curve Cnc Technology Co Ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-05-12
Anticipated expiration: 2029-07-18

Abstract

The utility model discloses a cell-phone type improvement U axle, including servo motor, servo motor's output shaft fixedly connected with planetary reducer, planetary reducer's output shaft passes through shaft coupling fixedly connected with ball, and ball's surface threaded connection has the sloping block, and ball's fixed surface is connected with combination bearing. This small-size model U axle improvement, one end inner wall through setting up the protection seat is pegged graft with planetary reducer's surperficial slip, the surface of protection seat has the casing under the mill frame through screw threaded connection, the inside of casing is provided with the improvement device under the mill frame, the improvement device is including the hinge pin, thereby it can obtain great well high volume to have, make the grinding machine can adapt to more grinding technology, the drive chain shape is direct, obtain more accurate drive ratio, great load has been absorbed with simple sloping block structure, accurate speed reducer part safety has been guaranteed, the characteristics of reverse clearance to the micro-feed influence have been reasonably avoided.

Description

Small machine type improved U-shaft

Technical Field

The utility model relates to a mechanical axis technical field, more specifically say, it relates to a cell phone type improvement U axle.

Background

The U shaft is a necessary mechanical shaft for grinding various roller shapes by a roller grinder, the feed amount of the U shaft reaches micron level, namely the minimum feed amount of the U shaft is 0.001mm, but the reverse clearance of a servo shaft with a common structure is usually larger than the value, therefore, the roll grinder which needs high precision needs a shaft which can stably feed, which is commonly called as a U shaft, the traditional U shaft only uses a mechanical amplification principle of a cam mechanism way, because the relationship between the feed amount and the motor rotation in the principle of cam mechanism amplification is a curve similar to a parabola, a small section of cam rotation is usually taken for use, the curve is approximate to a straight line, therefore, the obtained transmission ratio is an inaccurate value, has certain errors, and is greatly limited in practical production, so that the improvement of the U shaft of the small machine type is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a little model U axle improvement, it has the grinding technology that can adapt to more, obtains more accurate drive ratio, the reasonable characteristics of having avoided the influence of reverse clearance to the micro-feed.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a cell-phone type improvement U axle, including servo motor, servo motor's output shaft fixedly connected with planetary reducer, planetary reducer's output shaft passes through shaft coupling fixedly connected with ball, ball's surperficial threaded connection has the sloping block, ball's fixed surface is connected with combination bearing, combination bearing's fixed surface is connected with mounting plate, mounting plate's fixed surface is connected with the protection seat, the one end inner wall of protection seat is pegged graft with planetary reducer's surface slip, the surface of protection seat has the mill frame lower casing through screw threaded connection, the inside of the casing is provided with the improvement device under the mill frame, the improvement device is including the hinge pin.

Furthermore, the two ends of the hinge shaft are in threaded connection with the surfaces of the two sides of the lower grinding frame shell through screws, and the center surface of the hinge shaft is fixedly connected with a bearing, so that the transmission chain is direct in shape, and a more accurate transmission ratio is obtained.

Furthermore, the outer ring of the bearing is fixedly connected with a grinding frame upper shell, and one end of the grinding frame upper shell is provided with a power-off protection oil cylinder, so that the power-off protection effect is achieved.

Furthermore, the telescopic shaft of the power-off protection oil cylinder is hinged with a roller, and the surface of the roller is in sliding insertion connection with the surface of the inclined block, so that the purpose of absorbing heavy load by using a simple inclined block structure is achieved, and the safety of the precision speed reducer is ensured.

Furthermore, the surface of the lower shell of the grinding frame is provided with a sliding rail, the inner wall of the sliding rail is inserted with a sliding block in a sliding mode, and the surface of the sliding block is fixedly connected with the surface of the inclined block, so that the effect of positioning and facilitating the sliding of the inclined block is achieved.

Furthermore, a grinding wheel device is arranged on the surface of the other side of the upper shell of the grinding frame, a central shaft of the grinding wheel device penetrates through the surface of the upper shell of the grinding frame, and a grinding wheel is fixedly connected to the other end of the central shaft.

To sum up, the utility model discloses following beneficial effect has:

1. through the surperficial slip grafting of the one end inner wall that sets up the protection seat and planetary reducer, there is the grinding frame lower casing on the surface of protection seat through screw threaded connection, the inside of grinding frame lower casing is provided with the improvement device, the improvement device is including the hinge pin, thereby it is big well high to have to obtain, make the grinding machine can adapt to more grinding processes, the drive chain shape is direct, obtain more accurate drive ratio, great load has been absorbed with simple sloping block structure, accurate speed reducer part safety has been guaranteed, the reasonable characteristics of reverse clearance to the micro-feeding influence of having avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged view of a structure a in fig. 1 according to the present invention.

In the figure: 1. a servo motor; 2. a planetary reducer; 3. a ball screw; 4. a sloping block; 5. a combination bearing; 6. mounting a bottom plate; 7. a protective seat; 8. a lower housing of the mill stand; 9. a hinge axis; 10. a shell is arranged on the grinding frame; 11. a roller; 12. a slide rail; 13. a slider; 14. and (5) grinding wheels.

Detailed Description

Example (b):

the present invention will be described in further detail with reference to the accompanying fig. 1-2.

A small machine type improved U shaft is shown in a figure 1-2 and comprises a servo motor 1, wherein an output shaft of the servo motor 1 is fixedly connected with a planetary reducer 2, an output shaft of the planetary reducer 2 is fixedly connected with a ball screw 3 through a coupler, the surface of the ball screw 3 is in threaded connection with an inclined block 4, the surface of the ball screw 3 is fixedly connected with a combined bearing 5, the surface of the combined bearing 5 is fixedly connected with a mounting bottom plate 6, the surface of the mounting bottom plate 6 is fixedly connected with a protective seat 7, the inner wall of one end of the protective seat 7 is in sliding insertion connection with the surface of the planetary reducer 2, the surface of the protective seat 7 is in threaded connection with a lower grinding frame shell 8 through a screw, an improvement device is arranged inside the lower grinding frame shell 8, and; two ends of the hinge shaft 9 are in threaded connection with two side surfaces of the grinding frame lower shell 8 through screws, and a bearing is fixedly connected to the center surface of the hinge shaft 9, so that the transmission chain is direct in shape, and a more accurate transmission ratio is obtained; the outer ring of the bearing is fixedly connected with an upper grinding frame shell 10, and one end of the upper grinding frame shell 10 is provided with a power-off protection oil cylinder, so that the power-off protection effect is achieved; the telescopic shaft of the power-off protection oil cylinder is hinged with a roller 11, and the surface of the roller 11 is in sliding insertion connection with the surface of the inclined block 4, so that the heavy load is absorbed by a simple inclined block structure, and the safety of a part of the precision speed reducer is ensured;

the surface of the lower grinding frame shell 8 is provided with a sliding rail 12, the inner wall of the sliding rail 12 is inserted with a sliding block 13 in a sliding manner, and the surface of the sliding block 13 is fixedly connected with the surface of the inclined block 4, so that the effect of positioning and facilitating the sliding of the inclined block is achieved;

a grinding wheel device is arranged on the other side surface of the upper shell 10 of the grinding frame, a central shaft of the grinding wheel device penetrates through the surface of the upper shell 10 of the grinding frame, and a grinding wheel 14 is fixedly connected to the other end of the central shaft; through the one end inner wall that sets up protection seat 7 and planetary reducer 2's surperficial slip grafting, protection seat 7's surface has through screw threaded connection and grinds casing 8 under the frame, grind the inside of casing 8 under the frame and be provided with the improvement device, the improvement device is including hinge pin 9, thereby it is big well high volume to have to obtain, make the grinding machine can adapt to more grinding processes, the driving chain is like directly, obtain more accurate drive ratio, great load has been absorbed with simple sloping block structure, accurate speed reducer part safety has been guaranteed, the reasonable characteristics of reverse clearance to the micro-feeding influence of having avoided.

The working principle is as follows: the servo motor 1 obtains a large-torque torsion force through the planetary reducer 2, the large-torque torsion force is converted into an axial force through the ball screw 3, the inclined block 4 is pushed to do linear motion, the inclined block 4 pushes the roller 11 to enable the grinding wheel 14 to rotate around the hinge shaft 9, a power arm is formed from the center of the roller 11 to the center of the hinge shaft 9, and a resistance arm is formed from the center of the grinding wheel 14 to the center of the hinge shaft 9. The micro-feeding is realized by the transmission chains, and in the micro-feeding, the shell on the grinding frame is always firmly pressed on the inclined block, the rolling friction is formed between the roller and the inclined block, and the roller 11 is always pressed on the inclined block 4 by the shell on the grinding frame under the action of gravity, so that no reverse gap exists in the transmission chains, and the transmission precision is ensured.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a small-size model improvement U axle, includes servo motor (1), its characterized in that: the output shaft of the servo motor (1) is fixedly connected with a planetary reducer (2), the output shaft of the planetary reducer (2) is fixedly connected with a ball screw (3) through a coupler, the surface of the ball screw (3) is connected with an inclined block (4) in a threaded manner, the surface of the ball screw (3) is fixedly connected with a combined bearing (5), the surface of the combined bearing (5) is fixedly connected with a mounting base plate (6), the surface of the mounting base plate (6) is fixedly connected with a protective seat (7), the inner wall of one end of the protective seat (7) is connected with the planetary reducer (2) in a sliding manner in a plugging manner, the surface of the protective seat (7) is connected with a lower grinding frame shell (8) through screw threads, an improvement device is arranged inside the lower grinding frame shell (8), and the improvement device comprises a hinge shaft (9).

2. The small machine type improved U shaft according to claim 1, characterized in that: the two ends of the hinge shaft (9) are in threaded connection with the surfaces of the two sides of the grinding frame lower shell (8) through screws, and the center surface of the hinge shaft (9) is fixedly connected with a bearing.

3. The small machine type improved U shaft according to claim 2, characterized in that: the outer ring of the bearing is fixedly connected with a grinding frame upper shell (10), and one end of the grinding frame upper shell (10) is provided with a power-off protection oil cylinder.

4. The small machine type improved U shaft according to claim 3, characterized in that: the telescopic shaft of the power-off protection oil cylinder is hinged with a roller (11), and the surface of the roller (11) is in sliding insertion connection with the surface of the inclined block (4).

5. The small machine type improved U shaft according to claim 1, characterized in that: the surface of the grinding frame lower shell (8) is provided with a sliding rail (12), the inner wall of the sliding rail (12) is inserted with a sliding block (13) in a sliding mode, and the surface of the sliding block (13) is fixedly connected with the surface of the inclined block (4).

6. The small machine type improved U shaft according to claim 3, characterized in that: and a grinding wheel device is arranged on the surface of the other side of the upper shell (10) of the grinding frame, a central shaft of the grinding wheel device penetrates through the surface of the upper shell (10) of the grinding frame, and a grinding wheel (14) is fixedly connected to the other end of the central shaft.