Feed rate control system for numerical control machine tool
US4020331A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1976 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Feb 19, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/43006
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A feed rate control system for a numerical control system comprising a circuit to produce a unit movement quantity .DELTA.S and a unit feed rate .DELTA.F, a circuit to accumulate the unit feed rate .DELTA.F at each pulse of the pulse generator and to store them, a ratio calculator to obtain the ratio M of the output numerical value .SIGMA..DELTA.F to said unit movement quantity .DELTA.S, multipliers MUL.sub.1, MUL.sub.2, and MUL.sub.3 to multiply said unit movement quantity .DELTA.S, a Z-axis increment .DELTA.Z of said unit movement quantity .DELTA.S and a X-axis increment .DELTA.X, respectively, by said ratio calculator output M, and a circuit to compare the output numerical value .SIGMA..DELTA.F of the storage circuit with the unit movement quantity .DELTA.S and to produce an accumulating signal t whenever said .SIGMA..DELTA.F is larger than said .DELTA.S, said accumulating signal controlling t the feed rate of the machine tool, which is provided with a high feed rate circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.