Abrégé

A chamfering tool that chamfers an opening edge of a target hole formed in a work, the chamfering tool including a support shaft, a base shaft having the support shaft on a tip end side thereof and being eccentric with respect to the support shaft, and a blade portion having a rake face that is a step surface of a step protrusion portion protruded laterally from the support shaft or that is an end surface of the support shaft. The blade portion including an edge line in a shape of a curve and being bulged to a side away from a center axis of the support shaft, and the edge line being inclined with respect to an axial direction of the support shaft.

Classes IPC  ?

• B23D 5/00 - Machines à raboter ou à mortaiser taillant autrement que par déplacement relatif de l'outil et de la pièce à usiner selon une ligne droite
• B23C 3/12 - Ébavurage ou finition des arêtes, p. ex. ébarbage des angles soudés
• B23B 51/10 - Forets à chanfreiner, p. ex. travaillant comme des fraises
• B23D 7/06 - Machines à raboter, ou à mortaiser, caractérisées uniquement par la structure d'organes particuliers des agencements de porte-outils
• B23D 13/00 - Outils ou porte-outils spécialement conçus pour les machines à raboter ou à mortaiser

Abrégé

A cutting tip, a cutting tool and a gear edge cut-off device have greater ease-of-use than the conventional art. The cutting tip has a shaft portion supported linearly movably and forwardly biased in a linearly moving direction, an angular base portion provided at a front end of the shaft portion and having a pair of skirt faces and a ridge portion that extends obliquely with respect to the linearly moving direction, a groove depressed near the ridge portion of the skirt face, a blade edge on the cutting blade, positioned on a border line between the ridge portion and the groove, a rake face provided on the cutting blade and positioned further toward the groove side than the blade edge, and a flank face positioned further toward the ridge portion side than the blade edge and jutting out in the forward direction as it retracts from the blade edge.

Classes IPC  ?

• B23F 19/06 - Rasage des faces des dents d'engrenages
• B23F 19/10 - Chanfreinage des dents d'engrenage
• B23F 21/00 - Outils spécialement conçus pour être utilisés avec des machines servant à la fabrication de dents d'engrenage
• B23F 21/04 - Outils de rabotage ou de mortaisage
• B23B 1/00 - Méthodes de tournage ou méthodes de travail impliquant l'utilisation de toursUtilisation d'équipements auxiliaires en relation avec ces méthodes

Abrégé

An object is to provide a gear edge cut-off tool and a gear edge cut-off device capable of suppressing variation in the amount to cut off side edges of a gear. A gear edge cut-off tool of the present invention has a shape, in a first main plane (rake face) of a first cutting blade portion capable of cutting off a side edge of a gear wheel, that is curved or bent in a concave shape in an edge line direction.

Classes IPC  ?

• B23F 19/10 - Chanfreinage des dents d'engrenage
• B23F 21/28 - Lames de rasage
• B23F 19/06 - Rasage des faces des dents d'engrenages