举一反三
- 中国大学MOOC: In the following cutting tool materials, which is usually used for ultraprecision machining.
- The rake angle of the cutting tool affects the deformation in the cutting process, and the strength of the tool.
- Processing plastic metallic materials , Cutting tool materials are often used ( ) cemented carbide. A: YT B: YG C: 金刚石 D: T8
- When installing the turning tool, the turning tool ( ) must coincide with the rotating center of the workpiece. A: main cutting edge B: side cutting edge C: front cutting surface D: blade tip
- The technological system consists of A: machine tool B: fixture C: cutting tool D: workpiece
内容
- 0
On a CNC milling machine, actual position of the cutting tool is detected by ( ).
- 1
The<br/>back angle of the tool is measured in the () plane. A: Cutting plane PS B: In the orthogonal plane Po passing the selected point of the main<br/>cutting edge C: None of the above is true D: Inside the base PR passing the selected point of the main cutting<br/>edge
- 2
When the tip of turning tool is at the highest position of the main cutting edge, The inclination angle of the edge is ( ) A: - B: + C: 0 D: uncertain
- 3
There is one and only one ( ) on the various machine tools. A: main motion B: feed motion C: cutting motion D: tool motion
- 4
The required data contained in each line of the manuscript includes all machining instructions for transferring the cutting tool from one point to the next one.( )