Coolant feeding device of machine tool
US6702199B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2001 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Oct 4, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/46
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention prevents coolant from leaking out of a valve (23) after a feed pump (4) stops feeding the coolant, and diminishes a time-lag between the onset of feeding the coolant and mist generation, when the feed pump (4) starts feeding the coolant again. In the machine tool of this invention, the coolant is fed from a feed pump (4) into a mist generating device (13) provided on the tip of a spindle (8) by way of a feed line (7), and a valve (23) is provided at an inflow part for coolant of the mist generating device (13) to be closed when the coolant pressure within the feed line (7) lowers below a fixed level. A coolant sucking and delivering (2) sucks a fixed amount of coolant in the feed line (7), when the feed pump (4) stops feeding the coolant. On the other hand, the device (2) feeds a fixed amount of coolant into the feed line (7), when the feed pump (4) begins feeding the coolant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.