The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2013
Filed:
Nov. 25, 2009
Zhongde Shan, Beijing, CN;
Xinya LI, Beijing, CN;
Feng Liu, Beijing, CN;
LI Zhan, Beijing, CN;
Xiaoli Dong, Beijing, CN;
Xianglei Wang, Beijing, CN;
Zhongde Shan, Beijing, CN;
Xinya Li, Beijing, CN;
Feng Liu, Beijing, CN;
Li Zhan, Beijing, CN;
Xiaoli Dong, Beijing, CN;
Xianglei Wang, Beijing, CN;
Abstract
A digital processing method of a large or medium-size sand mold includes inverting a three-dimensional CAD model of a mold into a numeric controlling code, putting a prepared sand blank on a hollow grid-shaped processing platform to proceed the digital milling procedure, bringing away waste sand generated during processing by high pressure gas blown out from a nozzle near a cutter and the waste sand entering to a collecting device below the processing platform. A device for carrying out the method is disclosed. The method and the device reduce the processing steps.