机械专业英语作文
题目：请你用英语就机械领域的一个主题（如车床，螺母等）写一篇科技短文，字数在200以上。
Cutting tools（车刀）
In mechanical engineering high-speed development today, cutting tools of development has become a necessary condition, but we also want to know the kinds of tools and applications in order to complete the cutting work, and maintain the good life of cutter
According to the shape of the lathe tools, we generally use point form part of the car have the following kinds
1. The thick car, mainly used for cutting a lot of excess the diameter size close to need
2. Fine cars, this dao oil-stone available knife, so that the car is very smooth surface.
3. Cutting, only for end of cutting piece, can be used to cut materials. Turning part of the job is produce and deal with scraps of parts, including the blade, and broken broken or roll on scraps of structure, scraps discharge or let store the space of the chip, cutting fluids such as the channel structure elements. The cutting tool in part by the main cutting
edge, deputy cutting edge sword face, Lord, before after face and vice knife knife after surface, the knife sharp edges into. The cutting tool parts and handle department (namely the clamping part) of combining ways mainly have integral, welding type, mechanical clip solid type and welding machinery clip solid type. Mechanical clip solid type lathe tools can avoid hard alloy blades in high temperature and stress of welding crack, and the handle can be repeated use. Mechanical clip solid type lathe tools with screws and linking piece is generally the blades will be clamping, outfit can turn a blade mechanical clip solid type lathe tools. After using blunt blade can turn a continue to use, and parking cutter replacement time turning
Short, thus achieved rapid development
Through the above some introduction, hope everybody can better and faster cutting of workpiece.
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