Abrading – Precision device or process - or with condition responsive... – With feeding of tool or work holder
Reexamination Certificate
2004-11-16
2008-11-18
Morgan, Eileen P. (Department: 3723)
Abrading
Precision device or process - or with condition responsive...
With feeding of tool or work holder
C451S049000, C451S246000
Reexamination Certificate
active
07452263
ABSTRACT:
A method of grinding the outer circumferential surface of a workpiece5formed of a hard and brittle material into a predetermined shape using a grinding wheel while rotating the workpiece5is disclosed. The method includes plunge grinding the workpiece5at an arbitrary portion (plunge ground portion21) in the longitudinal direction of the workpiece5by causing the grinding wheel to come in contact with the workpiece5in a direction which intersects a rotational axis8of the workpiece5, and traverse grinding the workpiece5toward the plunge ground portion21by moving the grinding wheel relative to the workpiece5in a direction parallel to the rotational axis8of the workpiece5. 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.
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patent: A-2001-191236 (2001-07-01), None
Itoh Yuji
Noro Takashi
Morgan Eileen P.
NGK Insulators Ltd.
Oliff & Berridg,e PLC
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