Adjustable clamp

Abstract

The invention relates to the field of metal and alloy metallographic specimen preparation, in particular to an adjustable clamp. The adjustable clamp comprises a force application rod 1, a force application shaft 2, a sample clamp guide rail 3, a connecting key 4, a sample clamp 5, a right-angle connecting rod 6, a spring 7, a disc 8, a base 9 and a bottom plate 10. The whole adjustable clamp is simple in structural design and easy to manufacture, grinding and polishing machining of metallographic samples in general shapes can be met, grinding and polishing of metallographic samples with welding seams of different thicknesses and heights can also be met, and multiple purposes are achieved; the grinding and polishing direction can be changed and the grinding and polishing position can be adjusted under the condition that the metallographic samples are not changed; the applied force can be flexibly adjusted according to the grinding and polishing degree of the samples; and meanwhile, grinding and polishing work of four metallographic samples can be carried out, so that the grinding and polishing efficiency can be effectively improved, and the grinding and polishing time is greatly shortened.

Description

technical field [0001] The invention belongs to the field of metallographic sample preparation of metals and alloys thereof, and in particular relates to an adjustable clamp. Background technique [0002] After heat treatment of metals and their alloy materials or in the process of developing new materials, corresponding experiments are required to study the influence of technology on the mechanical properties of materials, and metallographic experiments are an indispensable experiment. Before conducting the metallographic microstructure observation experiment, the metallographic sample needs to be ground, polished and corroded, and then the sample can be placed under a microscope to observe the metal structure. The common metallographic sample preparation process includes rough grinding, fine grinding, rough polishing, fine polishing, corrosion and other steps, and the quality of grinding and polishing determines the effect of corrosion and affects the observation of metal ...

AI Technical Summary

Problems solved by technology

At present, in the grinding and polishing work, manual hand-held samples are generally used for grinding and polishing, which often requires a lot of manpower, material resources and a lot of time; The speed of the machine is relatively fast, which can easily cause the sample to fly out, thus causing unnecessary safety accidents

In addition, in the process of metallographic experiments, a large number of sample materials are usually required to be observed in order to draw corresponding conclusions. Simply relying on manual grinding and polishing of a single sample is slow in efficiency and time-consuming; and due to human instability factors , the metallographic samples produced by grinding and throwing have different heights, uneven flatness, and partial surface grinding of the samples, which will cause inconvenience to the subsequent observation of the metallographic structure and affect the quality of observation

Although there are automatic grinding and polishing machines in the market at present, the automatic grinding and polishing machines are not only expensive, but also the force applied during the grinding and polishing process is generally fixed, and cannot be automatically adjusted according to the current situation of grinding and polishing, thus affecting the grinding and polishing effect of the sample

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