Method for measuring precision cone

Abstract

The invention discloses a method for measuring a precision cone. The method comprises the following specific steps of: clinging the end face of one smaller end of the precision cone on a measurement reference surface of a flat plate; respectively arranging two cylindrical measuring rods at the two sides of the smaller end of the precision cone, and leading the two cylindrical measuring rods to be parallel to each other, wherein each cylindrical measuring rod clings to the tilt surface of the precision cone and the measurement reference surface; measuring a vertical distance between two outermost side points departed from each other in the two cylindrical measuring rods to obtain measurement data D; and according to a formula, obtaining the diameter of the end face of the smaller end of the precision cone. According to the method for measuring the precision cone, the diameter of the end face of the smaller end of the precision cone is not directly measured but is obtained by using indirect measurement and calculation of the cylindrical measuring rods, so that the diameter of the end face of the smaller end of the precision cone can be more accurately obtained; and therefore, the processing precision of the diameter of the end face of the smaller end of the precision cone can be accurately obtained.

Description

technical field [0001] The invention relates to the technical field of measuring instrument design, in particular to a measuring method for a precision cone. Background technique [0002] In production practice, the manufacturing accuracy requirements for the dimensions of the cone part of precision cone parts are relatively strict, and the length, slope, and diameter tolerances of the cone should meet the geometric tolerance requirements of precision cone parts. Before the precision machining of the precision cone parts, the two ends of the surface are ground first so that the non-parallelism of the two ends is not more than 0.01mm, and the two ends of the surface are used as the benchmark for calibration and measurement. see figure 1 , in finishing machining, the machining accuracy of the bevel angle a of the precision cone can be achieved by adjusting the rotation angle of the small tool holder of the processing device, the length L of the cone 3 The machining accuracy ...

AI Technical Summary

Problems solved by technology

[0003] At present, many companies produce precision cone parts in small batches, so the company does not have professional machine tool fixtures and measuring tools for precision cone parts processing. Therefore, vernier calipers are usually used to directly measure precision cones during processing. The end face diameter L of the smaller end 1 , and then use the end face diameter L of the smaller end 1 , taper angle a and taper length L 3 Convert to get the end face diameter L of the larger end 2 , and then obtain the machining accuracy of precision cone parts, but use a vernier caliper to measure the end face diameter L of the smaller end 1 Since the slope of the precision cone has a certain angle, the vernier caliper cannot be clamped just at the two ends of the diameter of the smaller end face, but at a distance from the smaller end face, so direct measurement is more accurate. The end face diameter L of the smaller end 1 The results obtained often have relatively large errors, and the end face diameter L of the smaller end of the precision conical part cannot be accurately obtained 1 machining accuracy

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