Any linkage which contains a screw pair, for example, is a spatial mechanism, since the relativemotion within a screw pair is helical.
举例子,任何含有螺旋副的连杆机构,由于它的相对运动是螺旋线形的,因此是空间的机构。
2
Cold beating lead screw plays the role of high-speed relativemotion in the way of high-speed blowing shaft blanks, so that local plastic deformation forms a non-chip metal forming technique.