Wire electric-discharge machining apparatus
US6723941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2002 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Apr 26, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H2600/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In the wire electric-discharge machining apparatus, when a measured voltage exceeds a proportional constant switching voltage that is set higher than a short circuit reference voltage, a relative feed rate determining unit outputs a relative feed rate based on a preliminarily set proportional constant A according to an increase in the measured voltage. When the measured voltage is equal to a reference voltage, the relative feed rate determining unit outputs a target feed rate that becomes a target value, and also outputs a relative feed rate that follows a preset proportional constant B (<A) and that is a positive value when the measured voltage exceeds the short circuit reference voltage but is below the proportional constant switching voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.