How about the CNC milling technology for precision parts processing?
Precision parts processing is relatively extensive in the industry. Why do you say that? In fact, we can see it in our lives. The effect is obvious. There will be more applications on some mechanical equipment. You need to know CNC The requirements for precision machining of precision parts are also high. Why? Because customers are demanding quality, and the advantages of CNC precision parts processing itself are great, so we must do better and make customers more trustworthy. This is CNC precision. Parts processing needs to be done.
When CNC milling flat parts, the side edge of an end mill is usually used for cutting. In order to reduce the traces of the knife and ensure the appearance quality of the parts, the cutting-in and cutting-out procedures of the cutting tool are carefully designed. When generalizing the outer surface of cnc milling, the cutting-in and cutting-out points of the milling cutter should cut into and out of the part surface along the extension line of the part's general curve, instead of directly cutting into the part along the normal direction to avoid scratches on the processing surface and ensure the part General lubrication.
When milling the closed inner summary surface, if the inner summary curve permits the extension, it should be cut in and out along the tangent direction. If the inner summary curve does not allow extension, the tool can only cut in and out along the normal direction of the inner summary curve, and select the cut-in and cut-out points at the intersection of the two generalized elements of the part. When there are no intersections between the internal elements, in order to avoid leaving a notch at the general corner when the tool compensation is undone, the cutting-in and cutting-out point of the tool should be far away from the corner.
shows the path of the tool when CNC milling the outer circle with the circular interpolation method. When the complete circle machining is finished, do not retract the tool at the tangent point 2. Instead, let the tool move a certain distance in the tangential direction to avoid the collision of the CNC lathe tool with the surface of the workpiece when the tool compensation is canceled, which constitutes the workpiece to be invalid. When milling internal arcs, we must also follow the guidelines of tangential cutting, and organize the processing path from arc to arc, which can improve the machining accuracy and processing quality of the inner surface of the hole.
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