Press machine and press method
US10279556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2014 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Nov 23, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H25/20
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A press machine includes a drive mechanism that moves at least one of an upper tool and a lower tool and machines a workpiece placed between the upper and lower tools. The drive mechanism includes a first drive source that rotates a screw shaft serving as an advance-retract component and a second drive source that rotates a nut connected to the screw shaft. A structure including the upper tool and lower tools includes a casing supporting the screw shaft such that the screw shaft is rotatable, a movable member that is movably formed in the casing and can contact an end of the screw shaft or retract therefrom, and a drive unit that moves the movable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.