Abstract:
An indexable, helical cutting insert (10, 100, 200, 300, 400) includes at least one axial clearance slash extending from a bottom surface (240) to one of said side walls (254, 256, 258, 260) forming a wiper (202, 204, 206, 208) on an edge of the axial clearance slash. In another embodiment, the cutting insert (300) includes at least one inside cutting edge (310, 312) that extends outwardly a distance (318) from the side wall (354, 356). In another embodiment, the helical cutting insert (100) includes at least one progressive cutting edge (102, 166, 104, 168). In another embodiment, the cutting insert (400) includes at least one helical cutting edge (466, 468) that is curved inwardly to enable the cutting insert (400) to perform machining operations on cutters having different diameters (402, 408).
Abstract:
The present invention relates to a router tool for edging the peripheral edge of eyeglass lenses. The tool comprises a longitudinally extending body rotatable on the axis thereof. A first blade extends axially and radially from the body, and has a first cutting portion for shaping an edge of a lens to a first configuration. A second blade is provided that is axially spaced from the first blade. The second blade extends axially and radially fromt he body, and has a second cutting portion for shaping an edge of a lens to a second configuration different than the first configuration. The present invention also relates to an edger having the disclosed router tool, and a method for shaping the edge of eyeglass lenses.
Abstract:
A tangential milling cutting insert (10, 210) having two identical opposing end surfaces (12, 212) which are mirror symmetrical with respect to a median plane (M), with two identical opposing major side surfaces (18, 218) of a generally isosceles trapezoidal shape and two identical opposing minor side surfaces (16, 216) extending between the end surfaces (12, 212) is disclosed. Each end surface (12, 212) has a peripheral edge (40, 240) containing cutting edges (50, 250) and four corners (24, 26, 224, 226) of which two diagonally opposed corners (26, 226) are lowered and the other two (24, 224) are raised. Each end surface (12, 212) is provided with an abutment member (28, 228) having an abutment surface (30, 230). In each cross section of the cutting insert (10, 210) taken in a plane parallel to a minor plane (P1) of the cutting insert (10, 210), the abutment surface (30, 230) is closer to the median plane (M) than a respective leading section (66, 266) of a major cutting edge (52, 252).
Abstract:
This invention relates to a slotting cutter which comprises a circular disc (1) along the periphery of which, there are spaced-apart chip channels (2) which house indexable cutting inserts (9), being mountable in seats (8), e.g. in cassettes (3). On the bottom side thereof, each cutting insert (9) has a recess (20) that is laterally displaced and arranged to be pressed against a male element (21) in connection with the seat (8). In doing so, the seats (8) for every second cutting insert have the male element (21) thereof situated on a left side, while the seats for other cutting inserts have the male element thereof situated on a right side. In this way, when the recesses and the male elements are brought into engagement with each other, one and the same indexable cutting insert can, on mounting, be obliged to assume one single position, viz . the correct position. Furthermore, the invention relates to a cuting insert as such.
Abstract:
The invention relates to a cutting insert used for cutting metal, especially for milling for example camshafts. The inventive insert comprises at least one cutting edge (4, 4') that is formed by the intersection of a face (2) with a flank (3). The aim of the invention is to provide a cutting insert for a milling cutter and a corresponding milling cutter the noise level of which, even if at full load, is considerably reduced for high-speed milling. To this end, the cutting edges (4, 4') extend at an angle deviating from 90 DEG relative to the cutting direction of the cutting insert.
Abstract:
The present invention relates to a cutting insert (10) for enhanced chip control. The insert includes a rake surface (75) extending partially along a side cutting edge (70a) of the insert to a transition location (T) and extending inwardly toward the center of the insert. A deflecting surface (80) extends upwardly and inwardly toward the center of the insert from the rake surface (75) and beyond the transition location (T) extends upwardly and inwardly from the side cutting edge (70a).
Abstract:
The present invention relates to a tool and a cutting insert for milling. The cutting insert is intended to be mounted in a milling body to be rotated in a milling machine. The milling body comprises at least one pocket in order to receive a parallelepipedical cutting insert. The cutting insert comprises two major sides (11) and them uniting minor sides (14) and upper and lower sides (15, 16), and comprises at least one pair of cutting edges (17, 19; 18, 20) which is formed at the transition of the upper side (15) and a major side and a minor side of the cutting insert. The upper side constitutes a chip surface and the major side and the minor side constitute clearance surfaces. Each pair of cutting edges consists of a major cutting edge (17, 18) at the major side and a minor cutting edge (19, 20) at the minor side, which intersect in the area of a cutting corner. The corner is provided inside an imaginary extension line of a major part of the minor side. The minor cutting edge is provided to generate a surface of a work piece. The major cutting edge slopes such that it forms an acute angle with the lower side (16). Each pair of cutting edges (17, 19; 18, 20) connects in direction towards the lower side to a first clearance surface (22A, 22B) protruding relative to the plane containing the major part of the minor and major sides (11). Recesses (30) are formed in surfaces (24) provided in the major sides (11).