Feed rate control method and apparatus in numerical control system
US5528506A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1995 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Aug 3, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/43203
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The tolerable maximum feed rate Fd is calculated in real time during operation based on the tolerable minimum moving time Ta to be determined by the data interpretation and the moving distance L of each machining block. If the command feed rate Fc exceeds the tolerable maximum feed rate Fd, the actual feed rate for the block is set to the tolerable maximum feed rate Fd, thereby realizing smooth deceleration and preventing mechanical shock of the machine tool and reduction in machining accuracy. Required time for each processing element is determined in advance, the sum of processing times corresponding each element is calculated by judging the processing mode element contained in machining for each block. Then, the feed rate is controlled by determining the tolerable minimum moving time for each block based on the calculated sum of processing times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.