Study On Practical Measurement Technology Of Geometric Parameters In Enterprise

Geometric parameter measurement is an important branch of check and measurement technique. Geometric parameter occupies important position in modern check and measurement. Comparing with advanced countries, the geometric parameter check in our country is still weak in production front line.There are various species for geometric parameters with their different characteristics. Generally speaking, there are many methods to assess a geometric parameter. According to the measuring equipment the enterprise owns, based on precision principle and economical efficiency principle, starting with the selection of measuring method, the paper studies the determination of geometric parameter acceptance limit in enterprise, the selection principle of measuring instruments and the foundation & embodiment of measuring benchmark. It detailedly introduces length measuring, angle measuring and the measuring of shape, position and tolerance. Meanwhile, the paper conducts applicability studies to the usual surface roughness measurement, common thread parameter measuring and the measuring method of cylinder involute gear parameter in the manufacturing process of enterprise. In addition, the paper introduces the reason, compose and elimination method of the measuring error in the process of measurement. Finally it discusses the evaluate method to the uncertainty of measuring.