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CNC Machining needs to pay attention to four major matters
Let's imagine if a machine is in dark and humid for a long time, dusty, oil and other chemical liquid corrosion, and production personnel move the machine without authorization, what problems will occur. It goes without saying that so many problems, not only the processing accuracy and performance of the machine will decrease, the loss will increase greatly, the frequency of replacement of parts will soar, and a lot of time and cost will increase, and our precision machines will be easy to scrap. So today to summarize the high probability of affecting CNC machining matters, you can refer to avoid to reduce loss.
First, CNC machining precautions of overcut inspection:
Overcutting is a recurring problem that requires special attention. The most important way to review is to model the toolpath and repeat the inspection in the top view and side view, and the toolpath without review is not allowed to be machined. When milling the shape, the lower tool position is selected as small and will also be overcut, which can be avoided by changing the lower tool point.
Second, CNC machining precautions of mold tolerance:
The accuracy of the parts processed by CNC lathes is very strict, only to achieve the required accuracy, can be used and judge this accuracy, mainly to see his ability to control the size, if this accuracy in the tolerance can fluctuate within the specified range, the part is qualified, if the tolerance is exceeded, it is unqualified.
Third, CNC machining precautions for clamping tools:
Before the knife head is installed on the machine, its taper fits the position and should be wiped clean with a cleaning cloth. The length of the tool adopts the tool tip to knife method (special cases with the case of knife in the knife), and the program list should be carefully checked when the tool is set. When the program is interrupted or the tool must be re-aligned again, attention should be paid to whether the depth can be connected with the front, under normal circumstances, the 0.1mm line can be adjusted first, and then adjusted according to the situation. Rotary retractable tool heads, if water-soluble cutting fluid is used, should be immersed in lubricating oil for several hours every half month for maintenance.
4. Arrangement of processing sequence of CNC machining precautions:
When arranging the processing sequence, the basic principles must be observed, including "first face before hole", "first rough and then fine", etc., in addition to these basic principles, it should also: according to the tool centralized process processing, avoid the same tool repeated use, reduce the number of tool changes and time. The hole system with high coaxiality requirements should be processed after the processing of the hole system is completed after one positioning, and then the hole system at other coordinate positions is processed, which can eliminate the error generated by repeated positioning and improve the coaxiality of the hole system. Choose to determine the tool point and tool change point, once determined, it is not suitable to replace.
These are all issues that CNC machining should pay attention to, and they are also issues worth thinking about
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