Dual internal spline coaxiality inspection device

Abstract

The invention discloses a dual internal spline coaxiality inspection device. The inspection device is composed of a fixed plug gage, a movable plug gage and a nut, wherein the fixed plug gage is of a vertical stepped shaft structure, the outer wall of the bottom section of the fixed plug gage is axially provided with external splines, the middle section of the fixed plug gage is provided with a cylindrical shaft, and the cylindrical shaft section is provided with an external thread matched with the nut; the movable plug gage is in a pored flange shape, a middle through hole is in clearance fit with the cylindrical shaft at the middle section of the fixed plug gage, and the outer wall of the movable plug gas is axially provided with external splines; and the movable plug gage and the fixed plug gage are coaxially sleeved and axially limited by the nut, thereby simultaneously forming a fixed plug gage rotational structure relative to a unlimited movable plug gage. According to the invention, the fixed plug gage is utilized as a standard, the movable plug gage is used for testing the coaxiality of double splined sleeves, if the two internal splines have a teeth position error, the adjusting position of the movable plug gage is rotated, and the structure is not influenced by the teeth position error in a coaxiality test. The inspection device provided by the invention has the advantages of convenience in check operation, high efficiency, and capability of objectively and qualitatively judging the coaxiality deviation condition of the double splined sleeves, thus being especially suitable for being used in a production field.

Description

technical field [0001] The invention relates to a checking tool for measuring position tolerances, in particular, the invention relates to a checking tool for measuring the coaxiality of two internal splines together. Background technique [0002] The double spline sleeve is a key component of the automobile differential lock. Its structural feature is that there are internal splines in the inner holes at both ends. Although the two internal splines are of different sizes, the coaxial precision requirements are high. The technology uses the plug gauge to test its shape separately, but it cannot test the coaxiality of the two inner splines. The three-dimensional electronic measuring device is the most advanced testing instrument in the existing technology, which can accurately measure the coaxiality of two inner splines through stereotaxic positioning. Because the three-dimensional electronic measuring device has high requirements on the testing conditions and environment, it...

AI Technical Summary

Problems solved by technology

[0002] The double spline sleeve is a key component of the automobile differential lock. Its structural feature is that there are internal splines in the inner holes at both ends. Although the two internal splines are of different sizes, the coaxial precision requirements are high. The plug gauge can be used to test the shape separately, but the coaxiality of the two inner splines cannot be tested

The three-dimensional electronic measuring device is the most advanced testing instrument in the existing technology, which can accurately measure the coaxiality of two inner splines through stereotaxic positioning. Because the three-dimensional electronic measuring device has high requirements on the testing conditions and environment, it is only suitable for Type inspection in the inspection room, not suitable for on-site production inspection

Due to the lack of necessary inspection tools on the production site, the coaxiality deviation between the two inner flowers cannot be found in time during the production process, and it is easy to cause losses due to out-of-tolerance batch products

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