Machine tool
US4819311A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1987 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Jun 15, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/309352
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A machine tool comprises an upstanding column, a tool-driving unit vertically movable on the column, and a pair of guide rails on a front surface of the column to extend vertically thereon and horizontally spaced apart from each other for guiding the upward and downward movement of the tool-driving unit. The tool-driving unit includes a lift frame on the guide rails and a tilting-type turret head which is supported on a front surface of the lift frame and is rotatable about an axis inclined relative to the longitudinal direction of the frame in a horizontal plane. One of the pair of guide rails is relatively disposed forwardly of the other guide rail, so that the individual guide rails both assume positions close to the turret head thereby to minimize the amount of overhang of the tool-driving unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.