Metallographic cutting machines are mainly divided into two categories: grinding wheel metallographic cutting machines and precision metallographic cutting machines. Regardless of which type of metallographic cutting machine is used, in practical applications, the entire sample cutting process takes a lot of time in the selection of clamping schemes and the clamping operation process. Therefore, for an irregularly shaped or complex sample clamping, it may involve one or more clamping release operation solutions, This is quite time-consuming.

    The purpose of clamping is to fix the cut sample for accurate positioning during cutting operations, without cutting displacement, ensuring accurate sample cutting dimensions, smooth and flat cutting sections, and no burrs. Clamping samples can be done in many ways, and the appropriate selection of the solution directly affects the cutting quality of the sample.

    When choosing clamping solutions, we often need to first consider the simple or complex geometric structure of the sample, whether it is one or multiple samples to be cut, whether the physical properties of the sample material are brittle, and whether it is a material sensitive to pressure; It may be many different samples or repeated cutting of the same sample. Furthermore, it is necessary to refer to the possibilities or limitations of the cutting table, cutting direction and mode provided by the metallographic cutting machine itself, and ultimately choose an appropriate sample clamping scheme to achieve reliable, stable, and smooth and accurate cutting of the sample.


Secondly, the layout of the cut sample relative to the cutting blade also affects the cutting quality. The conventional method is to clamp the lower part of the front of the cutting blade, which can better optimize the effect of the coolant.

    In addition, clamping on both sides of the cutting piece can effectively avoid burrs at the bottom of the cut sample, and also prevent cutting from being blocked or stopped due to materials with high internal stress gripping the cutting piece, which is also a serious situation.


For the cutting of most samples, it is necessary to lightly clamp the portion of the sample that will be cut off.


Metallographic cutting machine manufacturers also consider the diversity of samples and various application situations, and therefore design various fixtures that meet standard or unique requirements, such as standardized universal fixtures for quick and vertical clamping, such as clamping round rods, spheres, pipelines, bolts, and many other standardized fixtures. Of course, fixtures can also be customized for special needs.


Therefore, when choosing a metallographic cutting machine, we need to consider the selection of fixtures. We must choose fixtures that meet our own sample cutting and clamping plan to reduce the number and time of clamping operations, making sample cutting quality better and work easier.


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