A device for measuring the arc tooth space width of internal splines

Abstract

The present invention relates to a measuring instrument, more specifically, it relates to a measuring device for internal spline arc tooth groove width, which includes a pair of upper wedge-shaped upper and lower wedges with flat bottom and inclined surfaces with the same inclination angle. The upper wedge block and the lower wedge block are provided with two corresponding chutes on the slope of the upper wedge block, the corresponding two chute slots on the lower wedge block are provided with convex lines slidingly connected with the chute, and the lower wedge block is provided with positioning slides. The upper wedge is provided with a slider that can extend into the positioning chute and slide relative to the positioning groove. The upper wedge and the lower wedge are provided with movable parts that control the sliding of the upper wedge relative to the lower wedge. The invention has reasonable and simple structure, strong practicability, and strong stability when the upper wedge-shaped block slides relative to the lower wedge-shaped block for detection.

Description

technical field [0001] The present invention relates to a measuring instrument, more specifically, it relates to a measuring device for inner spline arc tooth groove width. Background technique [0002] The tooth profiles of involute internal gears or various internal splines, and the arc tooth width at the indexing circle (referred to as the arc tooth width) are crucial to whether the meshing of the inner and outer gears is reasonable, and whether the fit of the inner and outer splines is accurate. important structural parameters. Since this value is the arc length, it cannot be measured directly. After a series of calculations, it is usually indirectly measured and guaranteed with the corresponding rod spacing. The rod spacing of involute internal gears and various internal splines is generally measured by the following two methods: one is to first place two measuring rods of the same diameter into the corresponding internal gear or internal spline respectively Then plac...

AI Technical Summary

Problems solved by technology

The above two measurement methods have the following deficiencies: 1) Although the measurement of the first method is more accurate, the measurement efficiency is too low due to the complexity, so it is not suitable for the inspection of mass production; 2) The measurement of the second method , due to the influence of human factors, the neutrality is poor, it is difficult to measure accurately, the measurement error is large, especially the repeatability error is also large, very unstable, and the measurement accuracy is difficult to meet the requirements

[0004] During the sliding process of the above upper wedge relative to the lower wedge, since the inspector pushes the upper wedge to slide with his fingers, when the upper wedge stops at the corresponding position, he needs to hold the upper wedge with his fingers. Jitter, which in turn will affect the accuracy of detection

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