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:
Jul. 14, 1987
Filed:
Nov. 06, 1984
Tadashi Hirata, Yamato, JP;
Hidekatsu Ikeda, Hatano, JP;
Yoshitaka Arima, Isehara, JP;
Yoshihiko Kashihara, Isehara, JP;
Amada Company, Limited, , JP;
Abstract
A shearing machine is so arranged that the ram, when vertically moved, is resiliently guided by spring guides and is driven in such a manner as to be kept urged into contact with the guides. The shearing machine is provided with hold-down clamps which can firmly hold the work-sheet being sheared without damaging the work-sheet. A hydraulic pump for the the hold-down clamps is provided with a large diameter piston which will supply a large amount of flow under low pressure and damp the surge and a small diameter piston which will supply a small amount of flow under high pressure. The shearing machine is also provided with hold-up supports which will hold up the work-sheet being sheared to prevent the work-sheet from bending and curling. The shearing machine also has with a back gauge which can be used to set the widths or lengths into which the work-sheet is to be sheared but can be moved out of the way.