CNC machining rapid metal prototyping

In fact, most of the actual machining errors are caused by unreasonable machining processes, and the basic machining processes are guaranteed (such as “pre-roughing, first-faced rear holes, first large-faced small faces” or fixtures in milling CNC machining”

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How to make the size of aluminum parts more accurate?


1.Processing technology

In fact, most of the actual machining errors are caused by unreasonable machining processes, and the basic machining processes are guaranteed (such as “pre-roughing, first-faced rear holes, first large-faced small faces” or fixtures in milling CNC machining” Reduce the number of clamping times, try to use the combination of fixtures and other basic processing technology details, to minimize the machining error caused by iron filings on aluminum parts, because the aluminum parts are very soft, the excluded iron filings can easily cause machining errors in aluminum parts. . For example, in the FANUC or Central China Machining Center, the deep hole should be used as much as possible with the G83 command, so that the iron filings can be discharged instead of the G73 command.

CNC machining rapid metal prototyping


2. Cutting three elements: cutting speed vc, feed rate f, cutting depth ap and tool compensation

In simple terms, under the premise of ensuring the processing quality and tool wear, the adjustment parameters fully exert the cutting performance of the tool, so that the cutting efficiency is the highest and the processing cost is the lowest.

In the CNC lathe, there are also factors such as cutter head wear compensation.

 

CNC machining rapid metal prototyping


3. Tool setting

Inaccurate tool setting is also a factor in size error. Therefore, try to choose a good edge finder. If the machine has an automatic tool aligner, it is better.