Method for deburring a ceramic foundry core
US8490673B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2009 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | May 3, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B19/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for deburring a ceramic foundry core obtained by injecting a ceramic paste, the paste including a binder having a predetermined glass transition temperature, into a mold and having at least one surface portion with a surplus of material forming a burr to be eliminated. The method includes the following stages: a) disposing and attaching the molded, unfired foundry core onto a mounting; b) placing a milling tool, having an elongated shape with a helically cut edge, onto a tool holder; c) causing the tool to rotate around its axis and touching the milling tool to the surface portion to be deburred; and d) freezing the surface portion to be deburred such that the foundry core is maintained at a temperature lower than a glass transition temperature during the deburring operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.