Multiple piercing apparatus and method
US5036574A · kind A · utility
21Cited by
16References
54Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1989 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Oct 31, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/935
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A multiple piercing apparatus for piercing a workpiece having a plurality of reference marks defining the piercing locations. A plurality of adjustably movable piercing unit cases are opposedly arranged on opposite sides of a machine bed. A piercing element, such as a twist drill or punching assembly, is mounted for movement with respect to the unit case to be aligned with a respective reference mark in response to data received from a sensor, such as a camera or photo-sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.