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:
Nov. 18, 2008
Filed:
Nov. 16, 2004
Yuji Itoh, Toyota, JP;
Takashi Noro, Nagoya, JP;
Yuji Itoh, Toyota, JP;
Takashi Noro, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A method of grinding the outer circumferential surface of a workpieceformed of a hard and brittle material into a predetermined shape using a grinding wheel while rotating the workpieceis disclosed. The method includes plunge grinding the workpieceat an arbitrary portion (plunge ground portion) in the longitudinal direction of the workpieceby causing the grinding wheel to come in contact with the workpiecein a direction which intersects a rotational axisof the workpiece, and traverse grinding the workpiecetoward the plunge ground portionby moving the grinding wheel relative to the workpiecein a direction parallel to the rotational axisof the workpiece. This allows the outer circumferential surface of the workpiece made of a hard and brittle material, such as a honeycomb structure used for a DPF, to be ground into a predetermined shape in a short time, and prevents occurrence of chipping during grinding.