摘要:
A cutting insert having low cutting resistance and excellent chip discharge performance is provided. The cutting insert 1 according to an embodiment of the present invention includes an upper surface 2, a lower surface 3, a side surface, and a cutting edge 5 disposed between an intersection of the upper surface 2 and the side surface 4. The upper surface 2 includes a rake surface continuous with the cutting edge 5. The rake surface includes a first rake surface 21 which is located correspondingly to a middle part of the cutting edge 5, and is parallel to a horizontal plane L including the intersection or is inclined downward as the first rake surface separates from the cutting edge 5, and a pair of second rake surfaces which are located on both sides of the first rake surface 21 and are inclined upward as the second rake surfaces separate from the cutting edge 5, and which include concave parts 2231b and 221c. A cutting tool including the cutting insert, and a method of manufacturing a machined product using the cutting tool are also provided.
摘要:
A cutting member comprising a cutting edge (S1, S2, Si,) defining a cutting envelope and configured for removing material from a workpiece leaving therein a corner of angle α. The cutting edge comprises a first cutting segment (Si) and a second cutting segment (S2) spaced from the first cutting segment (S2). Respective first and second imaginary tangents (T1, T2) of the first and second cutting segments (S1, S2) intersect one another at point O located outside the cutting envelope, forming an angle corresponding to angle α, thereby defining a cutting frame at least a portion of which extends beyond the cutting envelope. The cutting edge further comprises an adjoining cutting segment (Si), extending between and bridging the first cutting segment (S1) and the second cutting segment (S2), and at least partially contained within the cutting frame. The cutting member further comprises at least one auxiliary cutting element (AT1, AT2) comprising an auxiliary cutting edge (CE′, CE″) extending generally along one of the imaginary tangents (T1 , T2) and beyond the cutting envelope. The auxiliary cutting edge (CE′, CE″) does not intersect the other of the imaginary tangents (CE″, CE′) and/or a bisector (B) of the angle α.
摘要:
[Object] To provide a cutting insert capable of performing good chip control. [Solution] A cutting insert (1) includes: a prism-shaped insert body (2); a rake face (3) on an upper surface of an end portion of the insert body (2) in a longitudinal direction; a cutting edge (4) on a ridge line between the rake face (3) and an end surface of the insert body (2); side cutting edges (5) on ridge lines between the rake face (3) and side surfaces of the insert body (2), being respectively connected to both end portions of the front cutting edge (4); and a breaker convex portion (6) on the rake face (3). The breaker convex portion (6) includes two breaker island portions (10) which extend toward the side cutting edge (5) sides as extending closer to the front cutting edge (4) side. The breaker island portions (10) each include from the front cutting edge (4) side a first raised portion (13), a descending portion (14) which gradually becomes lower from a top portion of the first raised portion (13), and a second raised portion (15) which gradually becomes higher, from the descending portion (14), than the top portion of the first raised portion (13).
摘要:
A cutting insert (1) includes an end cutting edge (5a) located along an intersection of an upper surface (2) and a front clearance surface (4a), and a pair of side cutting edges (5b) respectively located along intersections of the upper surface (2) and a pair of side clearance surfaces (4b). The upper surface (2) includes an end rake surface (21a) that is continuous with the end cutting edge (5a) and is inclined downward as departing from the end cutting edge (5a), a pair of major protrusions (22a) that are located apart from the end cutting edge (5a) and are less apart from each other as departing from the end cutting edge (5a) in a top view, and a pair of minor protrusions (22d) that are respectively located close to their adjacent side clearance surface (4b) of the pair of side clearance surface (4b) with respect to the pair of major protrusions (22a) in the top view. The pair of minor protrusions (22d) are located further apart from the end cutting edge (5a) than an end portion of each of the pair of major protrusions (22a) which is close to the end cutting edge (5a). A top portion of each of the pair of minor protrusions (22d) is lower than a top portion of each of the major protrusions (22a).
摘要:
Die vorliegende Erfindung offenbart einen Srhneldwerkzeughalter (1) mit einem Halterkörper (1'), der einen Schneidwerkzeugsitz (123) hat. Der Halterkörper (1') weist einen Einspannabschnitt (11) zum Einspannen des Schneidwerkzeughalters (1) in einer Werkzeugmaschine auf. Im Halterkörper (1') liegt wenigstens ein erster Kühlschmiermittelkanal (193) vor, der zumindest eine Austrittsöffnung (18a,18b) an einer Seitenfläche (122") des Halterkörpers hat und schräg aus der Seitenfläche (122") austritt. Die Austrittsöffnung (18a) ist so ausgerichtet, dass ein Kühlschmiermittelstrahl (K), der aus dem Kohlschmiermittelkanal (193) austritt auf eine Fläche eines Schneidwerkzeugs, das in dem Schneidwerkzeugsitz (123) aufgenommen ist, gerichtet werden kann. Darüber hinaus wird ein Herstellverfahren für den Schneidwerkzeughalter (1) unter Verwendung einer generativen Fertigungsvorrichtung und eine Verwendung der generativen Fertigungsvorrichtung offenbart.