Mechanism capable of achieving constant-speed motion law and reverse design method

Abstract

The invention discloses a mechanism capable of achieving a constant-speed motion law and a reverse design method. The mechanism comprises a combined mechanism, wherein the combined mechanism is formedby connecting a non-circular gear mechanism with a sine mechanism in series; the non-circular gear mechanism comprises a driving gear and a driven gear; the driving gear and the driven gear are connected in a matching manner; the sine mechanism, namely a connecting rod mechanism, comprises a crank, a sliding block, a driven part and a rack; the crank and the driven gear are coaxially; one end part of the crank is rotationally connected with the sliding block; the sliding block is slidably connected with the driven part; and the driven part is slidably connected with the rack. By adoption of the series combination between the non-circular gear mechanism and the sine mechanism, an constant-speed reciprocating motion law of the driven part can be strictly achieved; the mechanism provided bythe invention can serve as a main transmission system of a machine, so as to transfer relatively great power; according to a reverse kinematics design method, the constant-speed motion law of the driven part can be achieved through the combined mechanism; and according to the further extended application, any speed variation laws of the driven part can be achieved through the combined mechanism.

Description

technical field [0001] The invention relates to a reciprocating mechanism with constant-velocity motion, in particular to a mechanism capable of realizing constant-velocity motion and a reverse design method. Background technique [0002] In mechanical engineering, the main transmission system of some machines, its executive components must be able to strictly or approximately realize the law of uniform reciprocating motion, such as energy-dissipating shock absorber testing machines, tension and compression materials widely used in mechanical engineering and construction engineering The working requirement of the fatigue testing machine is that its main transmission system can strictly realize the law of constant speed reciprocating motion, so that the test results can be credible. At present, the transmission system that can realize the strict constant velocity law is mainly the hydraulic transmission system, but the mechanical transmission system is rare. Therefore, the m...

AI Technical Summary

Problems solved by technology

However, the hydraulic transmission system is expensive, and there are deficiencies such as oil change or oil leakage, and short service life.

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