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. 21, 2023
Filed:
May. 14, 2020
Nissan Motor Co., Ltd., Yokohama, JP;
Noriko Uchiyama, Kanagawa, JP;
Hirotaka Miwa, Kanagawa, JP;
Hidenori Watanabe, Kanagawa, JP;
Toshikazu Nanbu, Kanagawa, JP;
NISSAN MOTOR CO., LTD., Yokohama, JP;
Abstract
An incremental forming tool of the present invention includes a holding portion attached to an incremental forming apparatus and a free curved surface part for pressing a metal plate. The free curved surface part is made of at least a hard metal base material and a surface of the free curved surface part is covered with a hard film. The surface of the hard film has an Rpk of 0.15 μm or less, the Rpk is defined by JIS B 0671 and is calculated from a material ratio curve of a roughness curve, and has an Ra of 0.2 μm or less, the Ra is defined by JIS B 0601 and is calculated from a roughness curve. Therefore, a molded product having a smooth worked surface with no roughness can be produced without adding any extra equipment for preventing adhesion.