The division of NC lathe process and work steps
Division of CNC lathe process
(1) Divide the process by the clamping and positioning method of the parts. Because the structure and shape of each part are different, the technical requirements of each surface are also different, so in the processing, the positioning methods are different. Generally, when processing the shape of a part, it is positioned by the inner shape; when processing the inner shape of a part, it is positioned by the shape. Processes can be divided according to different positioning methods.
(2) Dividing processing according to rough and finishing processes. When dividing processes according to factors such as the machining accuracy, rigidity and deformation of the parts, the processes can be divided according to the principle of separating rough and finishing, that is, roughing first, then finishing . At this time, different machine tools or different tools can be used for processing. Usually in one installation, it is not allowed to process other surfaces of the part after a certain part of the surface is processed.
In order to reduce the number of tool changes, shorten the running time of the idle stroke, 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. As far as possible, use the same tool to process all the parts that can be processed, and then replace another tool to process other parts of the part. This method is often used in special CNC machine tools and machining centers.
Division of CNC lathe processing steps
The division of CNC lathe processing steps is mainly considered from two aspects: machining accuracy and production efficiency. It is often necessary to use different cutting tools and cutting parameters to process different surfaces in one process. In order to facilitate the analysis and description of complex parts, the process is subdivided into work steps.
The principle of division of CNC lathe process steps is:
(1) Rough machining, semi-finishing, and finishing of the same surface are completed in sequence, or all the processed surfaces are separated according to roughing and finishing.
(2) For parts that have both milling planes and boring machining surfaces, the machining can be performed by milling the plane first and then boring. Because the process steps are divided according to this method, the machining accuracy of the hole can be improved. Because the cutting force is large when milling the plane, the parts are prone to deformation. Milling the plane first and then boring the hole can restore the deformation for a period of time and reduce the impact on the accuracy of the hole caused by the deformation.
(3) Divide the working steps according to the tools used. The rotation time of some machine tool tables is shorter than the tool change time. You can divide the work steps according to the used tools to reduce the number of tool changes and improve the processing efficiency.
