Cutters – for shaping – Including holder having seat for inserted tool – With separate means to fasten tool to holder
Patent
1997-04-18
1999-08-17
Pitts, Andrea L.
Cutters, for shaping
Including holder having seat for inserted tool
With separate means to fasten tool to holder
407105, 407103, B23B 2904
Patent
active
059383771
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.
REFERENCES:
patent: 3341920 (1967-09-01), Kelm
patent: 3341921 (1967-09-01), Welller et al.
patent: 3341923 (1967-09-01), Kelm
patent: 3533150 (1970-10-01), Welch
patent: 3740807 (1973-06-01), Getts
patent: 4283163 (1981-08-01), Grafe et al.
patent: 4397592 (1983-08-01), Erickson
Jansson Mikael
Jordberg Jonas
Pitts Andrea L.
Seco Tools AB
Tsai Henry W. H.
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