B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 27/16 (2006.01) B23B 27/06 (2006.01) B23C 5/22 (2006.01)
Patent
CA 2204638
An arrangement has been provided for the fastening of cutting inserts on an insert holder with or without a shim. The bottom side of the cutting insert and the support surface of the shim or of the insert holder are shaped with inter- fitting ribs and grooves for stabilizing the cutting insert. The bottom side of the insert has grooves (12, 12', 12") and substantially planar portions (14) between said grooves, and said support surface (15, 15', 15") has a portion with ribs (13, 13', 13"), which ribs are intended to be accommodated in a corresponding number of grooves of the cutting insert. At least a part of the planar portions (14, 14', 14") functions as bearing surfaces for the cutting insert against parts of the support surface (15, 15', 15") which do not have ribs. With this construction, a very strong and stable fastening has been achieved, without any high demands on dimension tolerances.
L'invention concerne un système de fixation de plaquettes de coupe dans un porte-outil avec ou sans rondelle. La face inférieure de la plaquette de coupe et la surface support de la rondelle ou du porte-outil sont respectivement dotées de rainures et de nervures d'assemblage pour une bonne stabilité de la plaquette de coupe. La face inférieure de la plaquette de coupe présente des rainures (12,12',12'') séparées par des parties (14) sensiblement planes tandis que ladite surface de support (15,15',15'') présente une partie dotée de nervures (13,13',13''), lesquelles sont destinées à s'emboîter dans un nombre correspondant de rainures de la plaquette de coupe. Au moins une partie des portions planes (14,14',14'') fait office de surface portante pour la plaquette de coupe, cette surface venant en contact avec les parties de la surface support (15,15',15'') dépourvues de nervures. Grâce à cette conception, on obtient une fixation solide, stable, sans exigences élevées en termes de tolérances dimensionnelles.
Bystrom Lennart
Wiman Jorgen
Gowling Lafleur Henderson Llp
Sandvik Ab
Sandvik Intellectual Property Ab
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