Tooling and method for detecting intersection point dimension of axial cone of interlock shaft

Abstract

The invention provides a tooling and method for detecting the intersection point dimension of an axial cone of an interlock shaft. The tooling is composed of a base, two wedges, a dial indicator and a standard gauge; a V-shaped groove is formed in the base; a mounting groove perpendicular to the V-shaped groove is formed in the base according to the slope position of the interlock shaft; wedge surfaces of the unilateral wedges are arranged oppositely and are fixed with the base in the mounting groove, and a wedge angle of the wedges are equal to a design angle of the slope of the interlock shaft; the dial indicator is fixedly mounted at the front end of the base. The standard gauge is firstly placed in the V-shaped groove, the rear end of the standard gauge aligns to the rear end face of the base, and the front end of the standard gauge contacts with a measuring head of the dial indicator to reset the dial indicator; the interlock shaft is then placed in the V-shaped groove, and the axial cone dimension of the interlock shaft is judged to be qualified or not according to reading of the dial indicator. By the arrangement, difficulty in detecting the intersection point dimension of the axial cone of the interlock shaft is simplified.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a tool and a method for detecting the size of the intersection point of an axial taper surface of an interlock shaft. Background technique [0002] The interlock shaft is a matching part for the heavy truck gearbox, and the size requirements of the parts are as follows: figure 1 As shown, the material is 8620H, the surface hardness of the part is required to be HRC58-63, the depth of the cyanide infiltration layer is 0.76-0.89, and the roughness of the outer surface is required to be Ra0.8. The function of this part is: the three shift fork shafts in the gearbox are linked to push the inclined plane to make the interlock shaft move left and right, thereby pushing the double H air valve ejector rod and switch button on the rear end face to realize motion transmission. [0003] Due to the structural characteristics of the interlocking shaft parts and the hardness of the heat-tre...

AI Technical Summary

Problems solved by technology

[0003] Due to the structural characteristics of the interlocking shaft parts and the hardness of the heat-treated surface, vibrations are likely to occur during the machining of the inclined surface, resulting in uneven and asymmetric surfaces of the three axial sections of the inclined surface, which affect the machining accuracy such as linear dimensions and surface runout tolerances.

However, at present, it is only possible to use a three-coordinate testing instrument or a projector to randomly select points on the slope to generate a virtual straight line and the outer circle to generate intersection points for measurement, resulting in a large difference in the size of the intersection between the three sections of the inclined plane and the outer circle; at the same time, the three-coordinate testing instrument Or the disadvantages of projector measurement are: long detection cycle, far away from the production line, seriously affecting the production beat

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