- spiral spline broach
- 螺旋花键槽拉刀
English-Chinese electricity dictionary (电气专业词典). 2013.
English-Chinese electricity dictionary (电气专业词典). 2013.
Broach (metalworking) — Broaching is a machining operation which uses a toothed tool called a broach to remove material. Broaching can remove material from either the inside or outside of the workpiece depending on the position of the machine. Broaching machines usually … Wikipedia
Drill — For other uses, see Drill (disambiguation). Drill scheme A drill or drill motor is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for drilling holes in various materials or… … Wikipedia