Method and device for measuring radial runout of precise main shaft without standard rod

Abstract

The invention discloses a method and a device for measuring radial runout of a precise main shaft without a standard rod. At present, a standard rod is often used for measuring the radial runout of the main shaft, and roundness errors and installation eccentricity errors can be introduced into a measuring system. The precise main shaft radial runout measuring device comprises a laser mounting disc, a laser and a CMOS sensor. The laser mounting disc is fixed on the main shaft end face. And the laser is mounted on the laser mounting disc. The plane of the CMOS sensor is perpendicular to the axis of the main shaft, and the CMOS sensor is arranged on the outer side of the laser mounting disc. The CMOS sensor is matched with the laser rotating along with the main shaft, the radial runout of the main shaft can be directly obtained, a standard rod does not need to be used in the measurement process, therefore, the technical links of eccentric error separation and roundness error separation needed by a common measurement method can be avoided, and the measurement efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of precision measurement, and in particular relates to a method and device for measuring the radial runout of a precision spindle without using a standard rod. Background technique [0002] The level and quality of machinery industry equipment directly affect the production technology level and economic benefits of various sectors of the national economy. With the rapid development of modern industry, the progress of various scientific and technological fields requires the support of the manufacturing industry. At present, the machining accuracy requirements of machine tools have gradually moved towards the nanometer level, that is, ultra-precision machining. Precision machine tools are a necessary condition for machining precision parts. There are many factors that affect the machining accuracy of machine tools, the most critical of which is the core component of machine tools—the precision spindle. Exper...

AI Technical Summary

Problems solved by technology

These methods often use capacitive displacement sensors or eddy current displacement sensors to measure the radial runout of the main shaft. It is necessary to place a standard rod on the end face of the main shaft, which introduces eccentricity errors and roundness errors, reduces the measurement accuracy, and increases the measurement system. Complexity

Images