Explain the causes of several common machining parts overcut

If the workpiece is over-cut, if it is manually programmed, it will be forgotten to consider the tool radius in the programming, which is caused by carelessness. If it is software programming, it may be the center of the selected tool, rather than tangent, both programming methods will Cause the workpiece to be over cut

2. The over-cutting of the processed parts is another mistake in the tool selection. For example, a 16mm diameter cutter is used in the program, but the result is a 20mm cutter. Although the 4mm difference does not appear to be different to the naked eye, the processed parts will be made. The whole becomes smaller. This requires that you carefully check whether the tool diameter is reasonable before machining, and do not be lucky.

3. Another reason for overcutting of the workpiece is that the workpiece coordinate system is wrongly entered when hitting the zero position. Remember to offset the radius value of a zero bar, the tool compensation input is wrong, the tool length, and the tool radius compensation must be entered correctly. If the tool length input is 0.5mm, the workpiece will be 0.5mm more, and it can't be used directly for large workpieces. It should also be considered before the tool radius compensation is positive or negative tool compensation. If it is directly cut, it will also lead to The workpiece is overcut.

　　The above are the reasons for overcutting of several common processed parts. Others such as loose spindles and low precision of ball screws will cause overcutting during the machining process. After overcutting, you should check the reasons in time and prevent similar situations from happening again.