Apparatus for measuring and regulating the position of a wire end of a spiral spring in a coiling machine
US4476702A · kind A · utility
5Cited by
1References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1983 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Feb 28, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21F33/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A machine for producing spiral springs whose ends are twisted around the adjacent coils includes inductive proximity switches 18, 19 for sensing the position of the wire end 3a of each spring 3 conveyed from a coil forming station A. The measurement results are fed to a preselector counter 21, and when deviations from the correct wire length exceed a certain predetermined number a regulating motor 23 adjusts a tool which determines the coil diameter of the spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.