Rotary machining tool and method of its manufacture
US4744278A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1986 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Oct 9, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/1942
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention is a rotary machining tool and a method of making it using an easily replaceable cutter element assembly. A circular saw is exemplary of a cutting tool which can be made using the present invention. The cutter element assembly comprises two portions. The first is an inverted, generally U-shaped clevis with spaced apart side portions that fit over the circumferential edge of a sawplate. The clevis has an upper portion which extends outwardly from the sawplate edge thereby defining a tooth retaining socket between the sawplate edge and the clevis. The side portions of the clevis are apertured to accept a pin for attachment to the sawplate which has a corresponding aperture. A buttress attached to the clevis normally bears against the leading edge of a gullet and prevents rearward rotation when in use. The second member is an insertable tooth having a head and an elongated tapered shank. The shank has a taper on its upper surface sufficient to form a self-releasing taper, usually between 3.degree. and 10.degree.. The sides of the shank have less taper so as to form a self-locking taper, typically between 0.degree. and 2.5.degree.. The tooth shank is driven into t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.