Flatness and parallelism measurement device and flatness and parallelism measurement method

Abstract

The invention discloses a flatness and parallelism measurement device and a flatness and parallelism measurement method. The flatness and parallelism measurement device comprises a working table. The working table is provided with a lower measurement base and vertical sliding rails located on the two sides of the lower measurement base. An upper measurement base is arranged above the lower measurement base, up-and-down sliding connection is formed by the upper measurement base and the vertical sliding rails, the upper measurement base and the lower measurement base are respectively provided with a plurality of first displacement sensors and a plurality of second displacement sensors, and the first displacement sensors and the second displacement sensors are annularly distributed around the same vertical surrounding center shaft at equal interval. When measurement is carried out, the zero values of the first displacement sensors and the zero values of the second displacement sensors are set through a standard verification block, then the coordinate value of each measured point of a workpiece is measured, a data processing system can conduct fitting to obtain the datum plane of the upper measurement face and the datum plane of the lower measurement face, the flatness error values of the upper measurement face and the lower measurement face of the workpiece can be further calculated, and the parallelism error value of the upper measurement face relative to the lower measurement face can be further calculated. According to the flatness and parallelism measurement device and the flatness and parallelism measurement method, the flatness and the parallelism can be measured at the same time, the measurement procedures are rapid, the measurement accuracy is high, and the flatness and parallelism measurement device and the flatness and parallelism measurement method are suitable for on-line measurement.

Description

technical field [0001] The present invention relates to the field of measurement technology, in particular to a measuring device and method for measuring flatness and parallelism, which is suitable for measuring the flatness and parallelism of an oil cooler with two circular planes. Measurement. [0002] Background technique [0003] Some workpieces with high shape requirements usually have flatness and parallelism tolerance requirements, although the flatness of a single plane and the parallelism of two parallel planes can be measured by a three-coordinate measuring instrument or related special measuring instruments , but due to the problems of high price and complex measurement procedures of the above-mentioned equipment and instruments, they cannot be widely used in industrial production, especially not suitable for fast online detection on the production line, and it is difficult to measure the flatness and parallelism of two planes at the same time Spend. Usually, p...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a flatness and parallelism measuring device which is difficult to measure the flatness and parallelism at the same time in the existing measuring device, the measuring procedure is complicated so that it is not suitable for on-line measurement, and the accuracy of measuring the parallelism is low. It is suitable for measuring workpieces such as oil coolers with two coaxial circular planes, and can measure the flatness and parallelism between the upper and lower parallel planes at the same time. Degree, and the measurement procedure is fast, the measurement accuracy of parallelism is high, so it is suitable for online measurement

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