Hydraulic cycloidal drive
US4136519A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Jul 26, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B7/005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transfer system having a transfer mechanism which is located directly on or adjacent the production machine. The transfer mechanism comprises a reciprocating workpiece shuttle driven by a hydraulic driving unit, specifically a hydraulic transfer cylinder. The latter is connected to a remote hydraulic cycloidal drive unit by long conduits which may be positioned overhead. The remote hydraulic cycloidal drive unit employs a pumping cylinder having an elongated stationary piston rod on which the cylinder housing is slidably supported, with the pressure fluid from the pumping cylinder being supplied through the conduits to the transfer cylinder. The housing of the pumping cylinder is reciprocated by a crank associated with a cycloidal mechanical drive. This crank is connected to and rotates with a gear which is rotatably supported on a slide and reacts with a stationary rack so that reciprocation of the slide causes alternate rotation of the gear. The slide of the cycloidal mechanical drive is in turn reciprocated by a hydraulic drive cylinder which is disposed adjacent and parallel to both the pumping cylinder and the slide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.