when drilling, the drill rotates and moves axially. Thus, The main motion is the motion of the drill.
举一反三
- There is one and only one ( ) on the various machine tools. A: main motion B: feed motion C: cutting motion D: tool motion
- The following methods belong to mechanical practice EXCEPT___. A: repetition drill B: substitution drill C: Transformation drill D: Doing a survey
- The slotting machine is mainly used for machining the inner surface of the workpiece, and the main motion is the vertical reciprocal rectilinear motion of the tool.
- When we choose two different reference frames to analyze the motion of an object, the description of motion can be different.
- According to the following teaching procedure, which practice activity is it ? A: Repetition drill B: Substitution drill C: Transformation drill D: Using songs