The selection of NC cutting tools and the determination of cutting parameters are important contents in CNC machining process. They not only affect the machining efficiency of CNC machine tools, but also directly affect the processing quality. So how do CNC machining enterprises choose cutting tools?
The tool selection and cutting parameter determination of CNC machining center is completed in the man-machine interaction state, which forms a sharp contrast with the ordinary machine tool processing. At the same time, it also requires the programmer to master the basic principles of tool selection and cutting parameter determination, and fully consider the characteristics of numerical control processing in programming, and be able to correctly select the cutting tools and cutting parameters.
The general principles of tool selection are: easy installation and adjustment, good rigidity, high durability and precision. On the premise of meeting the machining requirements, the shorter toolholder should be selected as far as possible to improve the rigidity of tool processing
Familiar with the importance of cutting tools for CNC machining, it is inevitable that tool collision will occur in the process of use. For example, problems in the origin and coordinate system of CNC machining center will lead to Tool Collision fault. How to solve this problem?
When starting the machine, the origin of the machine tool is not set. If the program is run at this time, it will cause the machine tool to collide with the cutter, because the system does not know the exact position of the machine tool, and the mechanical origin is incorrect. So we should check the CNC machining center coordinate system origin setting before starting.
For the setting of workpiece coordinate system, before machining operation, zero point setting or coordinate system setting of workpiece coordinate system are correct. At this time, CNC machining center will not have the problem of tool collision or incorrect size of workpiece
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