摘要:
Herein a cutting insert (2) and a shoulder milling tool are disclosed. The cutting insert (2) comprises a surface-wiping secondary cutting edge (28) inclined in relation to a median plane (4) of the cutting insert (2) such that a distance to the median plane (4) decreases in a direction toward a corner cutting edge (26). A circumferential surface (18) comprises a clearance surface (50) extending along a main cutting edge (24). The clearance surface (50) along the main cutting (24) edge extends at an acute angle to the median plane (4), such that the clearance surface (50) is forming a negative nominal clearance angle, and wherein the circumferential surface (18) comprises first and second abutment surfaces (90) configured for abutment against axial and/or radial support surfaces of the milling tool, the abutment surfaces (90) extending along at least part of the main cutting edge (24) and the surface-wiping secondary cutting edge (28).
摘要:
A cutting insert (1) according to an embodiment of the present invention has a cutting edge having a first corner cutting edge (5a), a flat cutting edge (6), a connecting edge (8), a major cutting edge (7), and a second corner cutting edge (5b) in the order named. The major cutting edge (7) has an upwardly protruding curvilinear portion (71), a first straight line portion (72) extending from the curvilinear portion (71) toward the connecting edge (8), and a second straight line portion (73) extending from the curvilinear portion (71) toward the second corner cutting edge (5b). The flat cutting edge (6) and the major cutting edge (7) have a straight line shape, and the connecting edge (8) has an outwardly protruding curvilinear shape in a top view. The flat cutting edge (6), the connecting edge (8), and the first straight line portion (72) are located on a straight line in a side view.
摘要:
A single-sided tangential ramping milling insert (14) for high speed milling includes opposite insert seating and top surfaces (20,22) and a peripheral surface (24) which extends therebetween. The milling insert (14) has a reference plane (P) which passes through the entire peripheral surface (24), midway between the seating and top surfaces (20,22). The peripheral surface (24) includes two opposite side surfaces (26). Each side surface (26) includes a first cutting edge (40), a second cutting edge (42) connected to the first cutting edge (40) and extending transversely thereto, a ramping cutting edge (44) connected to the second cutting edge (42) and located opposite the first cutting edge (40), and a rake surface (38) which extends from at least a portion of the first cutting edge (40) toward the insert seating surface (20). The milling insert (14) includes two ramping relief surfaces (60), each of which extends from a ramping cutting edge (44) of one side surface (26) towards the first cutting edge (40) of the opposite side surface (26).
摘要:
The present invention relates to a cutting insert having cutting edge portions at intersection ridge portions between each of two end surfaces at the opposite side to each other and the peripheral side surface. Both the end surfaces are formed to be plane-symmetrical. In each end surface, long side portions and short side portions are alternately connected through raised corners or lowered corners. Each cutting edge portion is formed in regard to the raised corner, and has a corner cutting edge formed in the raised corner, a major cutting edge connected to the corner cutting edge and extending in the long side portion, and a minor cutting edge connected to the corner cutting edge at the opposite side and extending in the short side portion.
摘要:
L'invention se rapporte à un outil de fraisage comportant une dent de fraisage (13) unique, destinée à être entraînée en rotation à une vitesse comprise entre 8000 et 20000 tours par minute, l'outil (9) présentant une vitesse d'avance de 300 à 600 millimètres par minute, et ladite dent (13) présentant : - un angle d'hélice nul, - un angle de coupe nul, - un plat de planage (15) d'une longueur comprise entre 1,3 et 1,5 millimètres, ayant une dépouille comprise entre 5° et 8°, et situé à une distance à l'axe de rotation ( B ) de 4 à 8 millimètres. L'invention se rapporte aussi au procédé de fraisage (200) associé.