Numerical control system
US4503373A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1982 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Jun 18, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/50356
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Ordinarily, an interpolator (102) executes pulse calculations on the basis of a movement command from a command tape (101), to generate the respective distributed pulses XP, YP, ZP, BP and CP of cartesian coordinate axes and spherical coordinate axes, and these pulses drive corresponding servomotors (113)-(117) through servo circuits (108)-(112). In order to keep the relative position between the nose of a tool and a workpiece unchanged in a manual operation, a tool holder is positioned in the cartesian coordinate system, whereupon manual pulses in the B-axial or C-axial direction are generated by a manual pulse generator (103). Then, the distributed pulses BP and CP are generated through the interpolator (102) and rotate the servomotors (116) and (117). The distributed pulses are simultaneously impressed on a compensation circuit (104), which calculates the compensation pulses XHP, YHP and ZHP so as to drive the servomotors with pulses obtained by adding the compensation pulses to the distributed pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.