Numerically controlled lathe
US5315526A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1991 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Oct 7, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T82/2535
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A numerically controlled lathe capable of machining a workpiece by numerically controlling a machining table provided with a machining tool. In order to prevent a local uneven abrasion of parts, which make a sliding contact, due to a mass production of workpieces having a simple form or a machining in a non-circular shape, there are provided a main carriage and a sub carriage. A machining tool is positioned on the sub carriage, and the sub carriage traverses on the main carriage along an axis which the main carriage and the sub carriage have in common. When a circular machining is carried out, the main carriage and the sub carriage respectively traverse by an equal amount in directions opposite to each other, and the cutting tool is constantly maintained at a position designated by an instruction. At the time of a non-circular machining, the main carriage and the sub carriage respectively traverse in directions opposite to each other; moreover, the sub carriage rapidly traverses in response to an instruction designating a location of the tool. Thus parts which make a sliding contact are evenly worn out by shifting the relative positions of both the main and sub carriages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.