Question

Which of the following statements is correct about the cutting accuracy inspection of CNC machine tools?

CNC machine tool cutting accuracy inspection (  ), a comprehensive inspection of machine geometric accuracy and positioning accuracy.

A. Also known as static accuracy inspection, it is under cutting conditions

B. Also known as dynamic accuracy inspection, it is under no-load conditions

C. Also known as dynamic accuracy inspection, it is under cutting conditions

D. Also known as static accuracy inspection, it is under no-load conditions

Answer 1

Answer: C

Analysis: According to the characteristics of CNC machine tools, the cutting accuracy inspection of CNC machine tools is usually carried out under dynamic accuracy inspection, that is, under cutting conditions.

Therefore, option C "also known as dynamic accuracy testing, performed under cutting conditions" is correct.

Static accuracy inspection is usually used to check the geometric accuracy and positioning accuracy of machine tools, while dynamic accuracy inspection pays more attention to the performance of machine tools under actual operating conditions, including cutting accuracy, repeatability, consistency, etc. Therefore, options A and B are inaccurate.

In addition, although the accuracy check performed under no-load conditions can reflect the performance of the machine under unloaded conditions, it is not fully representative of the accuracy level of the machine under actual cutting conditions, so option D is also inaccurate.