Numerical control system
US4591771A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1982 |
| Grant date | May 27, 1986 |
| Priority date | — |
| Expiry date | Jun 18, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/50356
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In order to permit manual operation under a condition where the axial direction of a tool and the direction of a hole to be machined in a workpiece are held in agreement, the tool of a radius .gamma. is rotated by .theta. in the vertical rotational direction and by .rho. in the horizontal rotational direction in a orthogonal coordinate system and in a spherical coordinate system the origins of which coincide with the center of rotation of the tool. Upon doing so, in the orthogonal coordinates, the position of the front end of the tool becomes X.sub.0 =.gamma. sin .theta..multidot.cos .rho., Y.sub.0 =.gamma. sin .theta..multidot.sin .rho. and Z.sub.0 =.gamma. cos .theta.. Therefore, a train of pulses (Hp) from a manual pulse generator are distributed as X-, Y- and Z-axial components in the proportion to the above values by a manual pulse distribution circuit, and motors for the respective axes are driven through servo circuits by the pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.