Publish Time: 2022-12-14 Origin: Site
CNC machining refers to the machining which is carried out by CNC machine tool machining equipment. Since CNC machining is controlled by computer after programming, CNC machining has stable machining quality, high machining accuracy, complex surface and high machining efficiency.
What is the principle of using a minimum number of tools during CNC machining?
What are the principles of CNC machining manufacturing?
What is the principle of using a minimum number of tools during CNC machining?
CNC machining is based on the distance of the machined part relative to the tool setting point. Generally, the part near the tool setting point is machined first, and the part away from the tool setting point is machined later to shorten the tool movement distance and reduce the idle stroke. Time. In turning, it is also beneficial to maintain the rigidity of the blank or semi-finished part and improve its cutting conditions. For machining parts with both face milling and drilling, it can be done in the order of first milling the plane and then drilling. Since the cutting force is large when milling the plane, the parts tend to deform. First, the surface is milled, and then the hole is drilled so that it can recover for a while. After the deformation is recovered, drilling is beneficial to ensure the machining accuracy of the hole. Second, if drilled first When the plane is milled after the hole, the hole will produce burrs and ridges, which will affect the assembly of the hole.
The principle of first inside, then outside, crossover between inside and outside.
For parts that have both an inside surface (internal shape, internal cavity) and an outside surface to machine, the inside surface should normally be machined first and then the outside surface when determining the machining sequence. Finished interior and exterior surfaces. Normally, it is not allowed to machine one part of the surface (outer surface or inner surface) of the part and then machine other surfaces (inner surface or outer surface) of the part in one setup.
In order to reduce the number of tool changes and compress idle time during CNC machining, the process and steps should be divided according to the tools used. Parts can be machined according to the tool concentration process method. In order to reduce the tool change time, the same tool process should be concentrated as much as possible, and the same cutting part on the surface of the part should be machined with the same tool as much as possible to avoid multiple calls and installations of the same tool. That is to say, in one setup, as far as possible, all parts of the workpiece that need to be machined with this tool should be machined with the same tool, and then replace the second tool to machine other parts.
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