B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 27/14 (2006.01) B23C 5/16 (2006.01)
Patent
CA 2567077
It is an object to provide a cutting tool which can perform high-quality, high-efficiency machining of a workpiece such as hardened steel. The cutting tool includes a finishing cutting edge 6 which initially cuts into the workpiece, and superfinishing cutting edges 7 for finishing the workpiece cut by the finishing cutting edge. The superfinishing cutting edges 7 project from the finishing cutting edge by a predetermined amount B in such a direction that the depth of cut of the superfinishing cutting edges increases. Each superfinishing cutting edge includes a burnishing portion 7a having a predetermined width L in the feed direction of the tool, and a wiper portion 7b. The superfinishing cutting edges 7 burnish the finished surface formed by the finishing cutting edge, while removing a affected layer formed by the finishing cutting edge.
Cette invention concerne un outil de coupe permettant un usinage haute qualité et haut rendement d'un matériau de pièce en acier trempé. L'outil de coupe possède un bord de finition (6) destiné à opérer une première coupe dans le matériau de pièce et un bord de superfinition (7) destiné à superfinir le matériau suite à l'action du premier bord (6). Le second bord (7) fait saillie sur une distance prédéterminée (B) depuis la position du bord de finition (6) dans la direction dans laquelle une grandeur de coupe augmente. En outre, le bord de superfinition comprend une section de brunissage (7a) dont une largeur de tranche prédéterminée (L) s'étend dans un sens d'avancée de l'outil et une section d'essuyage (7b). Le bord de superfinition (7) réalise le brunissage d'une surface finie tout en éliminant une couche détériorée d'une surface usinée avec le bord de finition.
Fukaya Tomohiro
Kukino Satoru
Kuroda Yoshihiro
Okamura Katsumi
Marks & Clerk
Sumitomo Electric Hardmetal Corp.
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