How to divide the machining process and work steps of CNC lathe

January 28, 2023

Due to the different structural shapes of each part and the technical requirements of each surface, the positioning methods are different in CNC lathe processing. Generally, when the shape of the part is machined, it is positioned in an inner shape; when the shape of the part is machined, it is positioned in an outer shape.

The process can be divided according to the positioning method. The same surface is finished in the order of roughing, semi-finishing, and finishing, or the entire surface is separately processed by roughing and finishing. Use the tool to divide the work steps. The turning time of some lathe worktables is shorter than the tool change time. It is possible to divide the work steps according to the use of tools to reduce the number of tool changes and improve the processing efficiency. When the process is divided according to factors such as machining accuracy, rigidity and deformation of the part, the division process can be carried out according to the principle of separation of coarse and fine machining, that is, roughing is performed first, followed by finishing. It is now possible to work with different machines or different tools. Usually in one installation,

It is not allowed to machine the surface of a part of the part before processing other parts of the part. For parts that have both a milling plane and a boring surface, the boring of the plane can be machined first. Because the work steps are divided according to this method, the processing precision of the holes can be improved. Because the cutting force is large when milling the plane, the parts are prone to deformation. By first milling the plane and then boring, it can be restored for a period of time and reduce the influence of the deformation on the accuracy of the hole. In order to reduce the number of tool changes, shorten the idle travel time, and reduce unnecessary positioning errors, the machining process of the parts can be divided according to the method of using the same tool to concentrate the machining process.

Whenever possible, use the same tool to machine all the parts that can be machined, and then replace the other parts of the other part. This method is often used in dedicated CNC machine tools and machining centers. The division of work steps is mainly considered from the aspects of machining accuracy and production efficiency. It is often necessary to process different surfaces with different cutting tools and cutting amounts in one process. In order to facilitate the analysis and description of complex parts, it is subdivided into steps in the process. The principle of division of work steps is:
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