Method for machining the screw of a compression or expansion machine and a device for the application of said method
US4222691A · kind A · utility
2Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1978 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Apr 18, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/300112
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tool having only an end cutting-edge carries out a first movement of penetration into a screw blank so as to produce a groove having flanks substantially parallel to the pinion axis. The tool-holder is angularly displaced with respect to the spindle which carries the screw blank. A second movement of tool penetration takes place while the relative displacement is progressively reduced in order to obtain an inclined flank which produces a V-shaped profile. The screw is intended to form part of a compression and expansion machine and to cooperate with at least one pinion having V-form teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.