| 摘要 |
For machining a surface having compound curvature by means of a numerically controlled machine tool, a rotary cutting or grinding tool is used. It has a convex working surface that has the same circular profile on any radial plane through the tool's rotational axis, which profile, on every such plane, has the same radius r about a center which has the same location relative to the tool axis. Machining is planned in terms of an imaginary reference surface which is at r distance from the desired surface as measured along outward normals to the desired surface at every point thereon. Said center in the tool is maintained in coincidence with the reference surface during machining. Various methods of determining the reference surface are disclosed.
|
