Method of forming a drive surface on an eccentric pin
US6203257A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Sep 24, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/400175
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of forming a drive surface on an eccentric pin of a drive shaft for a scroll-type compressor is provided. First, an eccentric pin having an axis and a generally cylindrical outer surface disposed radially about the axis is provided. Next, a broaching tool having a machining face with a contour is provided. The contour may be a concave shallow bell-shaped curve. Finally, the drive surface is formed by engaging the outer surface with the machining face transverse to the axis. In this manner, the machining face forms a shape complementary to the contour on the eccentric pin thereby forming a slight crown on the drive surface. The broaching tool produces an adequate surface finish so that no subsequent machining operations to the drive surface are necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.