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:
Apr. 25, 1995
Filed:
Jul. 16, 1993
Applicant:
Inventors:
Hiromu Tomiyama, Kure, JP;
Yuzo Uotani, Higashihiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
2988808 ; 29888 ; 29 3 / ;
Abstract
In a method of producing crankshafts in a mass-production line, after a crankshaft casting is ground to its specified geometry, it is measured to detect a dynamic imbalance. Then, at least one radial balancing bore is drilled in a specified counterweight to a depth according to a resultant imbalance so as to balance the crankshaft if the crankshaft is judged, based on the resultant imbalance, to fall within a region in which a dynamic imbalance is eliminated by drilling bores. Otherwise, the crank shaft is removed out of the mass-production line if it is judged to be out of the region.