Contour error on-line measuring device of non-circular pin-hole of piston

Abstract

The invention discloses a contour error on-line measuring device of the non-circular pin-hole of a piston. According to the measuring device, guide rails are horizontally fixed onto a machine tool base, a support board is mounted on the guide rails and moves horizontally along the guide rails, a centering rod is mounted on the support board through a centering rod support, the piston is fixedly mounted on the support board through a clamping device, and the piston pin-hole is aligned with the centering rod; a box is mounted on the machine tool base, a measuring rod is connected with a machine tool main shaft inside the box, a measuring sleeve is fixedly sleeved outside the tail end of the measuring rod, the measuring head is mounted on the measuring sleeve, a photoelectric encoder is connected with the machine tool main shaft through an encoder support, and the measuring rod coincides with the central axis of the piston pin-hole and is parallel to the guide rails; a sensing synchronizer and a limit switch is mounted on the machine tool base, and the sensing synchronizer, the measuring head and the photoelectric encoder are all connected with a computer through data acquisition cards. The contour error on-line measuring device of the non-circular pin-hole of the piston works in an on-line measuring mode, is simple in structure, achieves measuring convenience, omits secondary clamping, has high precision and a wide application range, and can measuring the axial cross section and the radial cross section of the non-circular pin-hole of the piston.

Description

technical field [0001] The invention relates to a contour error detection device, in particular to a contour error in-position detection device for a piston shaped pin hole. Background technique [0002] With the increasing requirements for the output power and speed of the engine, people began to pursue pistons with heat resistance, wear resistance, good sealing performance and stable guidance, and at the same time required to meet the requirements of high work efficiency, low energy consumption and low noise. , while the traditional cylindrical piston pin hole will produce serious stress concentration phenomenon when the engine is running at high speed, which will deteriorate the working condition of the piston. The research and test results show that designing and processing the cylindrical pin hole of the piston into a non-cylindrical shape is the most effective way to homogenize the stress distribution and eliminate the stress concentration. However, the dimensional ch...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of detection of piston shaped pin holes, the object of the present invention is to provide a contour error detection device for piston shaped pin holes

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