Mobile universal metallographic sample polishing fixture and its application method for clamping samples

Abstract

The invention discloses a mobile general metallographic specimen polish-grinding clamp and a method for clamping a sample using the same. The middle section of a horizontal crossarm of an n-shaped support frame is fixedly provided with a driving element. The end part of a push rod, extended towards the inner side of the n-shaped support frame, of the driving element is fixedly provided with a clamp housing. A sector gear is rotatably installed in the clamp housing, and the tooth surface of the sector gear is meshed with a rack shaft. The lower end of the rack shaft moveably clamps upper crosssections of left and right transverse n-shaped connecting plates with opposite openings. Lower cross sections of the two transverse n-shaped connecting plates are fixedly provided with a left fastening block and a right fastening block. A sample clamping cavity is surrounded by the opposite sides of the two fastening blocks, and the reverse sides are inclined planes reverse to an inclined direction, the two fastening blocks are matched with the left and right inclined inner side walls of the clamp housing. A second elastic element downwards bears against the left fastening block and the rightfastening block. The device has the characteristics of convenient operation, automatic precision movement control, convenient movement, stable clamping, horizontal sample, extensive applicability, andstrong universality.

Description

technical field [0001] The invention relates to the field of metallographic analysis test equipment, in particular to a polishing fixture device used in the preparation process of metallographic samples. Background technique [0002] Metallographic analysis is one of the means of analyzing materials, which can reveal the real microstructure of materials. To conduct metallographic analysis, it is necessary to prepare metallographic samples that can be used for microscopic observation and inspection. In metallographic analysis, it is very important to prepare representative samples. Generally speaking, the preparation of metallographic samples will go through the following steps: sampling, grinding, polishing and corrosion. On the continuously variable speed polishing machine, the experimenter usually holds the metallographic sample by hand, which is not only time-consuming and labor-intensive, but also dangerous. For this situation, the usual treatment method is to use the ...

AI Technical Summary

Problems solved by technology

On the continuously variable speed polishing machine, the experimenter usually holds the metallographic sample by hand, which is not only time-consuming and labor-intensive, but also dangerous

For this situation, the usual treatment method is to use the sample preparation process to complete the sample preparation after inlaying first, but the inlaying of the sample is not only about inlaying equipment and inlaying materials, but also cannot be reused, and it is time-consuming and laborious, wasting resources.

[0003] At present, some special fixtures have been used to clamp metallographic samples and then grind and polish them. This method can solve the disadvantages of manual clamping and metallographic sample inlays, but usually the special fixtures can only be used for one specification and shape. same, but not universal

There is also a key problem that it is possible to clamp the metallographic sample, but it still needs to be held by hand. The consequence of this is that the levelness of the metallographic sample to be ground and polished cannot be guaranteed and the polished surface is inclined. , not conducive to the observation and analysis of microstructure

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