Quasi-cam-roller type gear pair mechanism and design method thereof

Abstract

The invention discloses a quasi-cam-roller type gear pair mechanism and a design method thereof. The gear pair mechanism comprises a driving gear, a driven gear, a guide rod, a sliding rail and a rack. The driving gear is mounted on the rack and rotates around the rotary center of the rack. The driving gear is a non-circular gear, the driven gear is a cylindrical gear, and the driven gear and the driving gear are engaged and are in center-distance-variable dual-face engagement transmission all the time. The guide rod is movably mounted on the sliding rail, meanwhile, one end of the guide rod is connected with the center of the driven gear, and the motion direction of the guide rod and the center connecting line of the driven gear and the driving gear are on the same straight line. The design method comprises the steps that a pitch curve of the driving gear is obtained through a motion curve of the driven gear; and through the gear engagement principle, the tooth shape of the driving gear is obtained, and design of the quasi-cam-roller type gear pair mechanism is completed. According to the quasi-cam-roller type gear pair mechanism and the design method thereof, reciprocal rectilinear motion of the cam roller mechanism can be achieved like a cam mechanism, and the characteristic of gear transmission is achieved; and transmission is accurate, motion is stable, noise is low, wear resistance is achieved, and lubricating is easy.

Description

technical field [0001] The invention relates to a cam-roller-like gear pair mechanism and its design method, especially the gear pair mechanism can replace the cam-roller mechanism to realize special motion. Background technique [0002] Cam mechanism is a commonly used high-level mechanism in machinery, which is mainly composed of three basic components: cam, follower and frame. The cam is a component with a curved profile. If the profile curve of the cam is properly designed, any predetermined movement law of the follower can be realized. This is a major advantage of the cam mechanism. The disadvantage of the cam mechanism is that there is high contact between the cam and the follower, the pressure is high, and it is easy to wear. It is generally only used in occasions where the transmission power is not large. [0003] Gear transmission has become the most important and widely used transmission in mechanical transmission due to its advantages of high efficiency, compact ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a cam-like roller gear pair mechanism and its design method in view of the above-mentioned deficiencies existing in the existing cam mechanism and gear transmission, which can realize any predetermined movement law of the follower like a cam mechanism , can meet the movement requirements of the cam roller mechanism, and has the characteristics of gear transmission, accurate transmission, stable movement, low noise, wear resistance and easy lubrication

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