Ultra-precise rapid circularity measuring tool

Abstract

The invention relates to an ultra-precise rapid circularity measuring tool which comprises a tool body and a ball fixing device. The tool body is of a hollow structure, the upper portion of the tool body includes a vacumm chamber, the lower portion of the tool body includes a buffering chamber, and the vacuum chamber is separated from the buffering chamber via a separator plate; the vacumm chamber is internally provided with a vacuum pump accommodating cavity which is fixed in the vacuum chamber via damping springs; and the vacuum pump accommodating cavity is internally provided with a vacuum pump which is fixed in the vacuum pump accommodating cavity via extension springs. The ultra-precise rapid circularity measuring tool reduces vibration of a circularity test during motion greatly via dual damping, the ball to be tested is fixed in a vacuum absorption manner instead of using an external binder, the balls of different materials can be tested, and the circularity of the ball can be determined rapidly and accurately.

Description

technical field [0001] The invention relates to a quick measurement of ultra-precision roundness tooling, which belongs to the field of optical instruments. Background technique [0002] High-precision spheres are important components in roundness meters, gyroscopes, bearings and precision measurement, and are often used as the benchmark for precision measurement. They play a very important role in precision equipment and precision machining, especially in ball bearings. The key part of the ball bearing, the progress of the bearing ball, directly affects the technical indicators such as the motion accuracy, noise and service life of the ball bearing, which in turn affects the performance of equipment and instruments; in addition, high-precision spheres are also widely used in high-precision optical instruments and equipment middle. [0003] Precision machining of high-precision spheres and accurate roundness testing are two major problems that have plagued the industry for ...

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Problems solved by technology

[0003] Precision machining of high-precision spheres and accurate roundness testing are two major problems that have plagued the industry for a long time. In the prior art, triangular chucks or magnet adsorption are used for roundness testing. The disadvantage is that there is a lack of reliable ball fixing devices. The center of the ball is not easy to determine (it often takes several hours to center), and the vibration of the device during the test is relatively large, so it is difficult to achieve accurate measurement of roundness, and magnet adsorption is not suitable for non-magnetic metal and non-metal balls. unable to absorb

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