Control system of machine tool
US10001212B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2015 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Jun 26, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/404
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A control system of a machine tool with a rotary type spindle and a feed axis which generates feed motion of the spindle, comprising a current detecting part which detects a current through a spindle motor for driving the spindle, a temperature detecting part which detects a motor temperature, a remaining time estimating part which uses a predetermined maximum allowable temperature and a detected temperature value by the temperature detecting part as the basis to estimate a remaining time until the motor temperature would reach the maximum allowable temperature on the assumption that the detected current value by the current detecting part at the time of the detected temperature value would continue to flow through the spindle motor, and a feed speed changing part which changes speed of the feed motion in accordance with the estimated value of the remaining time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.