Avoidable factors:
1.The machining process must control the machining error, and it is inseparable from the reasonable machining process. When the process is arranged, in addition to the basic machining process (such as the "rough first and then fine, face first, hole first, large face first in the process of CNC milling" In principle, the basic machining process details such as “rear face” or “reducing the number of clamping times and using modular fixtures as much as possible” in the use of fixtures) are based on the principle of minimizing the processing errors caused by aluminum chips. We all know that aluminum parts It is very soft, and the removed scraps are very easy to cause machining errors in aluminum parts.
2. Three elements of cutting: cutting speed vc, feed f, cutting depth ap and tool compensation. In this regard, in simple terms, it is to adjust the cutting parameters under the premise of ensuring tool wear and machining quality to make the cutting of the tool The performance can be fully exerted, so that the cutting efficiency can reach the highest and the processing cost is the lowest. In CNC lathes, there are also factors such as tool head wear compensation that need to be considered.
3. Numerical calculation of manual programming In manual programming, errors in the calculation process are very common. Although it is basically automatic programming now, if you encounter manual programming, you should pay more attention.
4. The knife is accurate.
If the tool setting is not accurate, it will also cause dimensional errors. Therefore, try to choose a better edge finder. If possible, it is best to equip the machine with a laser tool setting instrument to ensure the accuracy of the tool setting. If there is no edge finder, and there are no conditions, there is only the simplest way to try cutting!
