Piston skirt detecting device

Abstract

The invention relates to a piston skirt detecting device, comprising a base. A plurality of laminated adjusting flat plates are mounted on the base; a piston is placed on the adjusting flat plates; one ends of the adjusting flat plates are provided with a limiting post; one end face of the limiting post abuts against the diameter end of a piston skirt; the other ends of the adjusting flat plates are provided with a bracket; the bracket is provided with a horizontal hole and a thread hole vertically communicated with the horizontal hole; a detecting rod of a dial indicator is inserted into the horizontal hole of the bracket, and is fastened through a screw in a screw hole; and an indicator head of the dial indicator abuts against the diameter end of the piston skirt. With the adoption of the piston skirt detecting device provided by the invention, the adjusting flat plates are used as the basic height of the piston, and the limiting post abuts against the diameter end of the piston as the measurement basic face, so that the piston skirt detecting device can conveniently and rapidly measure the diameter of the piston skirt. Therefore, the piston skirt detecting device has the advantages of rapid and accurate measurement, high measurement precision, high working efficiency and wide applicability.

Description

technical field [0001] The invention relates to engine component detection equipment, in particular to a piston skirt size detection device for the engine. Background technique [0002] The piston is the core component of the engine. It is located in the cylinder and moves up and down linearly. It is pushed by the high-pressure gas to drive the crankshaft to rotate through the connecting rod to do work. The piston skirt, as the lower part of the last piston ring groove, acts as a guide for the piston to move up and down in the cylinder and to bear side pressure. The cross-section of the piston skirt is a circular structure, and the diameter tolerance accuracy of the piston skirt is required to be high, which affects the wear degree of the movement in the cylinder. [0003] In the prior art, the commonly used method for the tolerance inspection of the piston skirt is: hold the piston, and manually use a lever micrometer to measure the skirt. Since the piston skirt has a circ...

AI Technical Summary

Problems solved by technology

[0004] The applicant aims at the disadvantages of low detection accuracy and low work efficiency of using a lever micrometer in the above-mentioned existing production technology, and provides a piston skirt detection device with reasonable structure and convenient operation, so as to quickly and accurately detect the size of the piston skirt. Improved detection efficiency

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