Apparatus for finishing pistons and the like and method therefor
US4867020A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Jan 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T82/2514
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for finishing pistons (10) and the like from foundry-turned castings during one clamping operation to provide enhanced manufacturing productivity. Separate boring and turning modules (34, 24) of the apparatus are mounted on a primary base (18) and a grooving module (54) is mounted on a secondary base (72). The modules automatically groove the ring grooves (11), turn the complex shape of the skirt (15) and bore the wrist pin bore (13) through an ordered sequence of manufacturing steps. The piston stock is mounted for rotation on headstock and tailstock assemblies (82, 84). These assemblies are carried on the secondary base (72) which is slidably mounted on the primary base for movement into operative position with respect to the boring and turning modules according to the ordered sequence. The method and system improve piston quality while reducing manufacturing costs including saving factory floor space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.