Ball sizing machine and method
US4005591A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1976 |
| Grant date | Feb 1, 1977 |
| Priority date | — |
| Expiry date | Feb 11, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C37/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A ball sizing machine for sizing an internal passage in a workpiece in which pressure is employed to force a sizing ball through the passage against a fluid counter-pressure. The opposite ends of a passage to be sized are sealed at each end with a tapered ram plug with the sizing ball within the head end of the passage. The passage is filled with a fluid, such as oil, from the tail end of the passage. When passsage has been filled from the tail end to a predetermined pressure, the system is conditioned to permit a metered flow of fluid out of the tail end when pressure is applied to the head end of the passage in front of the ball to force the ball through the passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.