Cutting system controls, including height control
US7071441B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Dec 10, 2003 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Mar 27, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K10/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cutting system is disclosed for a plasma cutting torch movable by a driver relative to a work piece along a Z-axis. During cutting, the torch provides an arc voltage proportional to a distance between the torch and the work piece. A height control feedback circuit is connected to the torch and includes sensor circuitry providing an electrical signal proportional to the arc voltage and an analog-to-digital converter for converting the proportional signal to a digital signal. A computer and controller, including controls for selecting a desired height of the plasma torch, receive the digital signal, compare the actual height to the desired height, and actuate the driver to move the torch to within a preset limit of the desired height.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.