Method and special stop-pass caliper gauge for detecting low-taper circular conical surface

Abstract

The invention provides a method for detecting a low-taper circular conical surface. By the method, the low-taper circular conical surface can be precisely detected in real time and a workpiece to be detected is not damaged during processing, and the problem that a detection result is not matched with data which is measured by a coordinate measuring machine is solved. The method comprises the following steps of: cutting out two sections which are away from a Z plane by different distances on a circular conical surface solid of the workpiece to be detected; producing a special stop-pass caliper gauge according to the design tolerance requirements of section contour circles which are taken as detection objects; and detecting the two corresponding section contour circles on the circular conical surface solid of the workpiece to be detected by the special stop-pass caliper gauge, wherein if the two section contour circles can respectively pass through a go end of the special stop-pass caliper gauge and are limited by a not-go-end of the special stop-pass caliper gauge, the low-taper circular conical surface is judged to be qualified. The whole special stop-pass caliper gauge is in the shape of reversed C; the whole thickness of the special stop-pass caliper gauge is equal to the distance between each section to be detected and a detection reference surface; an upper edge and a lower edge of a C-shaped opening of the special stop-pass caliper gauge are parallel in the horizontal direction; a go-end limit edge is arranged at an outer side end of an inner wall of each of the upper edge and the lower edge of the C-shaped opening of the special stop-pass caliper gauge; and a not-go-end limit edge is arranged at an inner side end of each go-end limit edge.

Description

technical field [0001] The invention relates to the technical field of detection of guide vanes of gas turbine compressors, in particular to the technical field of detection of conical surfaces of assembly parts of guide vanes of gas turbine compressors, specifically a detection method of low-taper conical surfaces and a special non-passage caliper. Background technique [0002] The conical surfaces 5 and 6 of the assembly parts of the gas turbine compressor guide vane located at both ends are low-tapered conical surfaces, see figure 1 , its machining precision is high, and the machining of the conical surface mainly uses CNC turning and cylindrical grinding as the main processing means. It needs to be able to directly measure the workpiece state on the machine tool in real time to obtain measurement data, and adjust the processing parameters accordingly. The final guaranteed processing accuracy, the current international general test report is based on the submission of the...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a detection method of a low-taper conical surface, which can realize accurate real-time detection of workpieces during processing, avoid production pauses caused by only relying on three-coordinate detection, and effectively shorten the debugging cycle of new products , and its detection will not damage the workpiece to be measured, and can solve the problem of mismatch between the detection result and the three-coordinate detection data

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