Linear reciprocating type pre-milling machine

Abstract

The invention relates to a device for pre-milling before a metallic phase of metal is observed and a stress test sample is polished, in particular to a linear reciprocating type pre-milling machine which comprises a milling platform, a reciprocating link mechanism, a motor and a supporting base, wherein the milling platform comprises a linear guide rail, a plane milling plate and a sand paper fixing clamp; the reciprocating link mechanism comprises a cam and a connecting rod; a small-size alternated current motor with a speed-regulating device is served as the motor; a frame type simple supporting base is served as the supporting base; and a speed-regulating switch is placed on one side of the supporting base. The linear reciprocating type pre-milling machine can be used for keeping straight and homonymous scratches of a metal test piece all the time during a milling process and increasing the milling precision; the milling reciprocating speed can be adjusted according to the requirement during the milling process, so that the polishing and milling efficiency is increased. The linear reciprocating type pre-milling machine has the advantages of convenience in operation, simple and compact structure, space-saving property, cost-lowering property, wide application scope and capability of meeting the polishing and milling demands of various test pieces.

Description

technical field [0001] The invention relates to a device for pre-grinding treatment of metallographic observation and stress detection samples before polishing, in particular to a linear reciprocating pre-grinding machine. Background technique [0002] For metallographic observation and stress testing of metal materials, it is necessary to prepare metallographic samples. In the process of metallographic sample preparation, pre-grinding is an essential process before polishing. After pre-grinding the sample, the efficiency of sample preparation can be improved. effect. [0003] The existing pre-grinding treatment methods mainly include disc pre-grinding machine pre-grinding and manual pre-grinding, and most of them use manual pre-grinding, which requires a hand-held sample to reciprocate on the flat sandpaper, which is time-consuming and laborious, and it is difficult to grasp the rough surface of the sample. At present, although the disc pre-grinding machine that has been p...

AI Technical Summary

Problems solved by technology

[0003]The existing pre-grinding methods mainly include disc pre-grinding machine pre-grinding and manual pre-grinding, and most of them use manual pre-grinding. The reciprocating friction on the sandpaper is time-consuming and labor-intensive, and it is difficult to grasp the balance of the surface roughness of the sample; At present, the disc pre-grinding machine that has been put into use has a high efficiency in pre-grinding the specimen, and can basically meet the general experimental requirements. , but there are also some disadvantages; for example, in many metallographic observation experiments, the sample roughness requirements are relatively high, and it is required to keep polishing in a straight line during pre-grinding, that is, the scratches on the surface of the metal sample keep the same direction, so that Improve polishing accuracy

And because the disc pre-grinding machine uses the rotation of the grinding disc to polish the sample, for example, the patented product with the publication number CN3662086 and the patent name "pre-grinding machine (M-2)" cannot guarantee that the scratches on the sample are along the same direction, and the rotation speed of the disk is different, resulting in uneven surface roughness of the sample, which limits the precision of polishing. sex

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