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Pre-tightening device for eliminating transmission chain gaps

A transmission chain and clearance technology, which is applied in the direction of transmission parts, belts/chains/gears, mechanical equipment, etc., can solve the problem that the long-term stability and precision retention of the feeding system cannot be guaranteed, and affect the transmission accuracy and machining accuracy of equipment or mechanisms. High requirements and other problems, to achieve the effect of low cost, small space occupation, simple processing technology and assembly process

Inactive Publication Date: 2019-09-17
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned devices or methods for eliminating or reducing the transmission chain gap have complex structures, require high processing precision for contact parts such as gears, and cannot guarantee the long-term stability and precision retention of the feed system, which affects the reliability of equipment or mechanisms. Transmission accuracy

Method used

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  • Pre-tightening device for eliminating transmission chain gaps
  • Pre-tightening device for eliminating transmission chain gaps
  • Pre-tightening device for eliminating transmission chain gaps

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] figure 1 It is a schematic diagram of the working principle of the transmission chain of the feed system. Generally, the transmission chain is powered by the output end 1 (such as a motor or other power source) and transmitted to the power output shaft 2. Through the gear pair 3, the universal joint 4 and the key 5 and other methods to realize the functions of transmission chain such as speed change or direction change, and finally transmit the power to the execution end 7 to complete the transmission of force or torque, but there is a meshing gap in the gear pair 3, a transmission gap in the universal joint 4, and the key 5 and the keyway There is a fit gap, which leads to an error between the actual rotation angle or position of the execution end 7 of the transmission chain and the power output shaft 2 of the feed system after multiple long-ter...

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Abstract

The invention belongs to the technical field of feed system transmission chains, and particularly relates to a pre-tightening device for eliminating transmission chain gaps. The device is used for eliminating a transmission error between the output end and the execution end which are connected through a transmission chain contact part. The device comprises a disc-shaped fixed end which is arranged on a transmission shaft of the execution end and is coaxial with the transmission shaft, a first plane volute spiral spring and a second plane volute spiral spring, wherein the first plane volute spiral spring and the second plane volute spiral spring are nested with each other, the first plane volute spiral spring and the second plane volute spiral spring are the same in structure, consistent in size and the same in torque generation direction, the torque of the springs is gradually increased along with the forward rotation of the transmission shaft, when the transmission shaft rotates reversely, the torque of the springs is automatically released, and the transmission chain gaps are eliminated; and one end of the inner side of the first plane volute spiral spring and one end of the inner side end of the second plane volute spiral spring are symmetrically fixed on the two sides of the transmission shaft, and one end of the outer side of the first plane volute spiral spring and one end of the outer side end of the second plane volute spiral spring are symmetrically fixed on the fixed end. According to the pre-tightening device, various gaps on a transmission chain of a feeding system can be automatically eliminated on the premise that the machining and manufacturing precision of contact parts such as a gear is not required to be improved, and the transmission precision is high.

Description

technical field [0001] The invention belongs to the technical field of transmission chains of feed systems, and in particular relates to a pretensioning device for eliminating gaps in transmission chains. Background technique [0002] The performance of the feed system of modern mechatronic equipment directly determines the transmission accuracy and efficiency of the equipment. Its performance is affected by many factors, the most important of which is the gap between the contact parts of the transmission chain, including the meshing gap of the gear pair, the universal joint Clearance, keyway fit clearance, etc. The equipment or mechanism feed system, especially the continuous control system, requires accurate control of the position and speed of the feed motion (including linear motion and rotary motion) at the same time, which requires the mechanical transmission system to have a high positioning. Accuracy and transmission response characteristics. Since the feed system ...

Claims

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Application Information

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IPC IPC(8): F16H57/12
CPCF16H57/12F16H2057/127
Inventor 郭志家衣大勇张金山彭朝晖范月容冯嘉敏赵守智周寅鹏石辰蕾姚成志
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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