Method for detecting backlash control size of rigid wheel for harmonic drive

Abstract

The invention discloses a method for detecting the backlash control size of a rigid wheel for harmonic drive. According to the method, two or three measuring blocks are adopted to be matched with a two-claw or three-claw inside micrometer for detection; and during measurement, a measuring block is adhered to each of the inner teeth of the rigid gear at an interval of 180 degrees or 120 degrees, and then the outer edge of the measuring head of the two-jaw or three-jaw inside micrometer is in contact with the inner wall of the measuring block to measure the control size H of the rigid gear whenthe harmonic gear is reasonably engaged with the backlash. According to the invention, the width of the measuring block is far greater than the tooth pitch of the harmonic gear, so that the measuringblock does not need to be strictly kept at equal intervals of 180 degrees or 120 degrees, and only the measuring contact of the inside micrometer needs to be ensured to be in contact with the inner wall of the measuring block; any position can be measured and is not limited by a rigid gear tooth groove or a tooth crest; comprehensive detection of the tooth surfaces of the rigid gear and the flexible gear can be realized, and errors caused by single-section detection are avoided; and the space position occupied by the flexible gear in actual assembly is simulated, and the control result is moreaccurate and effective.

Description

technical field [0001] The invention relates to a detection method for the side clearance control dimension of a rigid wheel for harmonic transmission, and belongs to the technical field of mechanical transmission detection. Background technique [0002] Harmonic drive is mainly composed of rigid wheel, flexible wheel and wave generator. The inner circle of the rigid spline is provided with internal teeth, and the outer circle of the flexible spline is provided with external teeth. The flexible spline is set on the oval wave generator, and the flexible spline undergoes controllable deformation under the action of the wave generator, so that The outer teeth of the flexible spline near the axis are completely meshed with the inner teeth of the rigid spline; the outer teeth of the flexible spline near the short axis of the wave generator are completely disengaged from the inner teeth of the rigid spline; the outer teeth of the flexible spline between the major axis and the shor...

AI Technical Summary

Problems solved by technology

However, the rigid wheel is difficult to align the extreme position of the two measuring rods when measuring the internal gear, and the accuracy of the measurement is not high

In addition, the cross-rod distance measurement method only reflects the size of a specific section, and cannot comprehensively reflect the influence of machining errors and tooth surface roughness caused by factors such as tools

Usually assembly also needs to be assembled in groups according to the degree of assembly tightness, so that the production efficiency of harmonic gears is not high, and the quality fluctuation range is wide

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