Cutting tool for chip removal and a locking pin
US5938377A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Apr 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T407/2278
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a tool for chip removal including a holder and a cutting insert provided with a through-hole to abut against a base surface and support surfaces in a cutting insert pocket in the holder. A locking pin threaded into a boring in the holder is received by the insert hole. The pin includes a head, a waist, a conical portion, and a threaded portion, which pin portions have a common center axis in an unloaded condition. The locking pin is of a quick action type. The boring includes an eccentric conical recess provided to displace the cutting insert in a direction towards the support surfaces in cooperation with the pin during tightening of the pin in the threaded part of the boring. The pin is provided to be able to secure both negative and positive cutting inserts in the insert pocket, by the head and the waist at a final phase of the pin tightening provided to elastically bend in a direction from the support surfaces. A transition between the head and waist cooperates with a profiled hole in a first type of cutting insert while the head cooperates with a cylindrical insert hole in another type of cutting insert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.