Auxiliary clamp of full-automatic grinding and polishing machine for polishing disc-shaped sample

Abstract

The invention discloses an auxiliary clamp of a full-automatic grinding and polishing machine for polishing a disc-shaped sample. The auxiliary clamp comprises a clamp main body, a plurality of limiting columns are arranged at the top end of the clamp main body, and at least one assembling groove is formed at the bottom end of the clamp main body. By means of the auxiliary clamp, the full-automatic grinding and polishing machine achieves the full-automatic grinding and polishing function on the large-size disc-shaped sample under the conditions of different rotating speeds and lower pressures; the parallelism of the upper and lower surfaces of the ground and polished sample is ensured; and three disc-shaped samples with the maximum diameter of 2.74 inches can be polished at the same time in unit time to achieve the mirror surface effect, the polishing effects of the disc samples are consistent, and the polishing efficiency is effectively improved.

Description

technical field [0001] The invention belongs to the field of mechanical polishing devices, and in particular relates to an auxiliary fixture for polishing disk-type samples of a fully automatic grinding and polishing machine. Background technique [0002] With reference to ASTM G99-2017 "Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus" formulated by the American Society for Testing and Materials, in order to ensure the stability of the wear system at high speeds, The high-precision friction and wear testing machines developed on this basis in the United States, Europe, Japan and other countries usually default to a disc-shaped sample with a diameter of 2.74 inches (about 69.6 mm) and a height of 0.26 inches (about 6.6 mm). Determined as the standard disc-type sample size. [0003] In the friction and wear test, the state and degree of wear are directly related to the surface quality of the tested sample, and the surface quality of the tested sample must b...

AI Technical Summary

Problems solved by technology

[0005] Although the automatic grinding and polishing machine can realize multi-station grinding and polishing, due to the small size of the circular sample holding slot (the maximum diameter is only suitable for circular samples with a diameter of about 30mm), it cannot meet the requirements of relatively large friction and wear tests. The surface polishing of large-size disc-shaped samples is urgently needed to design an auxiliary fixture that matches with it when relying on a fully automatic grinding and polishing machine to process the surface polishing quality of larger-size discs.

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