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. 27, 2001
Filed:
Jul. 21, 2000
Yoshinobu Makino, Machida, JP;
Kiyoshi Yamada, Akishima, JP;
Katsunori Minami, Fujisawa, JP;
Masahiro Yamada, Yokohama, JP;
Kazunori Hamada, Atsugi, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In a method of manufacturing a turbine nozzle having a nozzle blade body, a flat plate is prepared. A first support plate for supporting an inner ring side of the turbine nozzle is blanked from the flat plate by using laser beam cutting. A second support plate for supporting an outer ring side of the turbine nozzle is blanked from the flat plate by using laser beam cutting. Each of the first and second support plates in bent so as to form each of the first and second support plates as a ring member. While controlling laser beam based on a program, by the laser beam, the ring-formed first and second support plates are drilled so as to form holes therethrough. At that time, each of the holes has a three-dimensional blade profile, and the three-dimensional blade profile corresponds to a three-dimensional profile of the nozzle blade body. After that, the nozzle blade body is inserted into the holes of the first and second support platen so as to weld the nozzle blade body thereto by using a laser beam. On the other hand, a diaphragm inner ring and a diaphragm outer ring are prepared and the first and second support plates are welded into the diaphragm inner and outer rings, respectively so as to manufacture the turbine nozzle.