Propeller milling machine
US4046057A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1974 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Nov 27, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/308512
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A propeller milling machine having a double-column bridge under which a work to be machined is placed. A plurality of ram assemblies with built-in ram shafts are supported by a horizontal crossrail laid on the bridge so as to traverse horizontally along, and move vertically at right angles to, the crossrail. Each ram assembly carries an extension head with a built-in shaft coupled to the ram shaft. An inclined coupler, at least the upper surface or underside of which is inclined, is turnably disposed between each ram assembly and its extension head, permitting the latter to be tilted upward or downward. To one end of each extension head is detachably fitted a ball end mill which in turn is coupled to the extension shaft. To the other end of the extension head is swingably connected an angle head having a built-in main spindle coupled at a right angle to the extension shaft thereby to drive a main milling cutter for machining the work, in such a manner that the swing of the angle head causes the cutter to turn or swing about the extension shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.