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:
May. 04, 2004
Filed:
May. 30, 2002
Junzo Ikeda, Yao, JP;
Koyo Machine Industries Co., Ltd., Osaka, JP;
Abstract
A centerless grinder according to the present invention comprises a bed , a grinding wheel spindle stock , a regulating wheel spindle stock , a work rest , and the like. The grinding wheel spindle stock and the regulating wheel spindle stock are respectively moved toward and away from each other by feed devices . The feed devices respectively comprise feed screws each having one end fixed to the work rest . Nuts are respectively retained in the grinding wheel spindle stock and the regulating wheel spindle stock in threading engagement with the feed screws so that axial movements thereof along the feed screws are restricted and rotational movements thereof about axes thereof are permitted. The nuts are respectively rotated by driving motors . In the centerless grinder , the feed screws are fixed to the work rest and, therefore, even if the bed is thermally deformed by heat generated during grinding, a reduction in machining accuracy can be minimized.