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:
Feb. 20, 1990
Filed:
Feb. 06, 1987
Katsuyoshi Sakamoto, Kanagawa, JP;
Takeshi Takahashi, Kanagawa, JP;
Amada Company, Limited, , JP;
Abstract
To easily mount the ram drive unit on the upper frame of a punch press without being subjected to the influence of heat generated from the ram drive unit, the ram drive unit (23) is mounted on the upper frame symmetrical right and left when seen from the front. To accurately determine the angular position of a tool set, the punch holder (95) is fitted to the cylindrical pivotal member (113) with a positive fit tolerance to eliminate a or slip along the circumferential direction thereof. Further, the punch press is provided with a die holder (17) including a die fixing device (133) composed of a die push member (169), a hydraulic cylinder (165) and a piston rod (167) and further with an automatic tool exchange device (29) located equidistantly away from the process position and the tool exchange position.