A rotatable axis-rotating pair based on helical motion

Abstract

The invention relates to a rotatable axis revolute based on spiral motion. The rotatable axis revolute based on spiral motion comprises a sliding sleeve and a rotating shaft arranged in the sliding sleeve. One end of the rotating shaft is connected to the side wall of the sliding sleeve through a rotating shaft connecting rod, the other end of the rotating shaft is in rotating connection into a rotating sleeve, the upper end of the rotating sleeve is connected with a rotating sleeve connecting rod, the lower end of the rotating sleeve is fixed in a ring groove of a ring part, and the ring partis arranged in the sliding sleeve. A spiral through groove and spiral blind grooves are formed in the sliding sleeve, the ring part is provided with protrusions matched with the spiral grooves of thesliding sleeve, and the ring part can relatively slide or spirally move along the spiral grooves of the sliding sleeve. The rotatable axis revolute based on spiral motion is novel in design, compactand reasonable in structure, high in practicability and convenient to use and popularize.

Description

technical field [0001] The invention belongs to the technical field of mechanical mechanisms, and relates to a rotatable axis rotation pair that can be used for medical robots, bionic robots, virtual axis machine tools, and other robots or mechanical equipment that require variable configurations, and specifically relates to a rotatable axis rotation pair based on spiral motion. vice. Background technique [0002] Mechanisms are the basic building blocks of robots and mechanical devices. The components of the mechanism are connected by kinematic pairs (revolving pairs, moving pairs, Hooke hinges, etc.), which have certain degrees of freedom and motion trajectories, so that the mechanism forms a definite configuration and realizes a specific action process. The revolving pair connects two components so that they can rotate relative to each other around a common axis, and is the most commonly used kinematic pair in mechanism design. [0003] Robot is the product of the combi...

AI Technical Summary

Problems solved by technology

This kind of rotating pair is used in the field of robots, which limits the working range of the robot, makes it impossible to change the configuration in time, and is difficult to adapt to complex action requirements

For the rotatable axis rotary pair mentioned in the document "Constraint analysis on mobility change of a novel metamorphicparallel mechanism", its axis can only rotate in the plane formed by the axis and the centerline of a certain component, and a special driving device needs to be added , not convenient for the application of small space robots

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