Measuring tool for measuring space between involute odd tooth internal spline large-sized rods in part

Abstract

The invention discloses a measuring tool for measuring space between involute odd tooth internal spline large-sized rods in a part. Via the measuring tool, a maximum value and a minimum value of the space between involute odd tooth internal spline large-sized rods in the part on a machine tool can be measured easily. The measuring tool has a split structure, the measuring tool also comprises a support cylinder of which a length corresponds to an aperture of a via hole of a cylinder in the part, three measuring rods are arranged in the measuring tool, a measuring gauge body comprises a measuring gauge main body, a large end and a small end; the large body is perpendicular to the lengthways direction of the measuring gauge main body and is symmetric to an axis of the measuring gauge main body, and the small end comprises a front end face and a rear end face; distance between end faces, positioned far away from two sides of the measuring gauge main body, of the large end corresponds to asum of a diameter of one measuring rod and distance between two neighboring tooth grooves; distance between the front end face of the small end and the end faces of the large end corresponds to a minimum value of the space between the rods, distance between the rear end face thereof and the end faces of the large end face corresponds to a maximum value of the space between the rods, and a middle part of the support cylinder is connected with the measuring gauge main body via through holes on projections to form a cross-shaped structure.

Description

technical field [0001] The invention relates to a measuring tool for measuring the distance between spline rods in involute teeth in parts, in particular to a measuring tool for measuring the distance between large-sized rods in splines in involute odd-numbered teeth in parts. Background technique [0002] Parts 5 including internal splines with involute odd teeth are widely used in many wind power gear boxes. see figure 1 and figure 2 , the whole of the part 5 is a cylinder including a cylindrical through hole 5-3 with a diameter of D3, and the middle part of the cylindrical through hole 5-3 is provided with a spline major diameter D1, a spline middle diameter D and a spline Involute odd-numbered inner spline 5-2 of minor diameter D2. Depend on figure 1 and figure 2 It can be seen that in this part 5, the diameter D3 of the cylindrical through hole 5-3 is larger than the major diameter D1 of the involute inner spline 5-2. Those skilled in the art know that the inspe...

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Problems solved by technology

[0003] 1. The overall volume is relatively large and heavy, and it is difficult to measure the large-size rod spacing M of the involute odd-numbered inner spline in part 5 on the machine tool;

[0004] 2. Measuring the maximum value of the large-size rod spacing M of the involute odd-tooth internal splines in part 5 requires a set of measuring tools to measure the large-size rod spacing M of the involute odd-tooth internal splines in part 5. The maximum value requires another set of measuring tools, and there are many measurement procedures, which are time-consuming and labor-intensive;

[0005] 3. During the measurement process, the measuring rods 3 at both ends of the measuring tool are not easy to be inserted into the tooth grooves of the involute inner spline at the same time, and the measurement is time-consuming and laborious and the efficiency is low

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