Cryogen shot blast deflashing system
US4648214A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1983 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Oct 28, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24C3/263
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cryogen shot blast deflashing apparatus includes an upstanding frame which movably supports a receptacle assembly. The receptacle assembly includes an enclosure having a housing that enshrouds a rotatable drum, and a door which selectively opens and closes an open outer end of the drum. A throwing wheel is carried on the door for discharging particulate media and cryogen gas into the drum for impacting workpieces embrittling workpiece flash. A recirculation system is provided for withdrawing cryogen gas and particulates from the drum during operation of the machine, for separating reusable particulate media from particles of waste material such as workpiece flash, and for returning a controlled flow of pressurized cryogen gas and particulate media to the throwing wheel. The recirculation system includes a blower for recirculating cryogen gas to the throwing wheel from the drum by evacuating cryogen from the drum through a return conduit, and by redelivering pressurized cryogen to the throwing wheel through a supply conduit, whereby the blower cooperates with the throwing wheel to establish the desired high velocity flow of cryogen gas through the drum. A metering device introduce…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.