Many CNC machining enterprises have encountered the problem of hard parts. Next, Xiaobian explains why CNC parts are hard to process. CNC hardware parts processing technology in order to reach the accurate surface of processing parts, it needs to choose the dream processing principle and precise forming activities. But beside the essential work, it is very difficult to finish the accurate machining principle of mechanical numerical control, and there is a big gap between it and the dream value. If we only seek for accurate comments, it will affect the machining efficiency and fail to achieve the expected economic benefits.
The key factors that affect the hardness of CNC parts are as follows:
Factors of raw materials to be processed: the hardness of raw materials to be processed is small, and the more plastic the raw materials are, the more important the level of hard cold working is.
2. The form factor of the tool: the front angle, the edge fillet and the wear amount of the back edge of the CNC machining tool have a great influence on the cold working hard layer. The hardness and depth of the hard layer increase with the decrease of the front angle and the increase of the wear of the edge and the back edge.
The change of cutting speed and feed rate has a great influence on cold work hardness. When the cutting speed increases, the contact time between the cutter and the workpiece is short, the plastic deformation level is small, and the hardness and hard layer are reduced. As the feed speed increases, the plastic deformation level increases, and the surface cold hardening level increases.
Therefore, as long as the correct prevention of the above factors, there will be no problem of CNC machining parts.
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