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:
Jan. 22, 2002
Filed:
Dec. 21, 1999
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A pin and an oil hole are modeled in an X, Y, and Z space (a three-dimensional coordinate system). Then, the model is cut with a plane which passes through a central axis of the hole and which includes a line normal to a tangent of the pin at a point at which the central axis of the oil hole and the surface of the pin (cylindrical surface) intersect. By this operation, shapes of the pin and the oil hole are recognized in two dimensions. Following this, a point of a chamfering drill is made to overlap the pin and the oil hole on a plane. Since a shape of the chamfering drill is already known, dimensions of a chamfered portion when viewed on said plane can be determined geometrically. Then, chamfering is performed with the chamfering drill kept at such an angle of inclination that desired dimensions of chamfer can be obtained on said plane.