Helical cutting insert with offset cutting edges

Details Helical cutting insert with offset cutting edges Helical cutting insert with offset cutting edges

B - Operations, Transporting

23

C

B23C 5/10 (2006.01) B23C 5/22 (2006.01)

Patent

CA 2211854

A cutting insert (20) for use in a rotary milling tool (10) is provided. The cutting insert (20) includes an insert body including a bottom face (22), a top face (24) and a side face (26). A stepped cutting edge (20) is formed at the intersection of the top face (24) and the side face (26) for engaging a workpiece and removing a chip from it. The stepped cutting edge includes at least two offset edge portions (30a-c) which produce distinct, transversely- spaced chip segments during the cutting operation. The offset edge portions (30a-c) are connected by transition edge portions (30d-e) which are disposed at an obtuse angle with respect to the offset edge portions. The angle of the transition edge portions tends to spread the individual chip segments apart during the machining operation to effect a thinning of the chip between the individual chip segments. The entire cutting edge is helically curved so that the cutting edge lies on the surface of a circumscribing cylinder defined by the rotation of the cutting edge about the axis of the milling cutter.

L'invention porte sur une plaquette de coupe rapportée (20) pour outil rotatif d'enlèvement de matière (10) comportant une face inférieure (22), une face supérieure (24) et une face latérale (26). L'arrête de coupe segmentée formée par l'intersection de la face supérieure (24) et de la face latérale (26) entre en contact avec la pièce à usiner pour enlever de la matière. Ladite arête comporte au moins deux parties décalées (30a-c) produisant lors de la coupe des segments de copeaux distincts séparés transversalement. Les parties décalées de l'arête (30a-c) sont reliées par des zones de transition (30d-e) formant avec lesdites parties décalées un angle obtus tendant à étaler les différents segments de copeaux pendant l'usinage et à amincir les parties du copeau reliant les différents segments. La totalité de l'arête de coupe est incurvée hélicoïdalement de manière à être circonscrite dans le cylindre engendré par la rotation de l'arête autour de l'axe de la fraise.

Affiliated with

Also associated with

Rating

Helical cutting insert with offset cutting edges does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Helical cutting insert with offset cutting edges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Helical cutting insert with offset cutting edges will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2033583