Abstract

2) 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.

IPC Classes  ?

• B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
• B23B 27/14 - Cutting tools of which the bits or tips are of special material
• B23B 51/02 - Twist drills
• B23C 5/06 - Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
• B23C 5/20 - Milling-cutters characterised by physical features other than shape with removable cutter-bits or teeth
• B23B 27/04 - Cutting-off tools

Abstract

L).

IPC Classes  ?

• B23C 5/20 - Milling-cutters characterised by physical features other than shape with removable cutter-bits or teeth
• B23B 27/14 - Cutting tools of which the bits or tips are of special material
• B23B 51/02 - Twist drills
• B23C 5/06 - Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
• B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
• B23B 27/00 - Tools for turning or boring machinesTools of a similar kind in generalAccessories therefor
• B23B 27/04 - Cutting-off tools
• B23B 27/22 - Cutting tools with chip-breaking equipment
• G06F 17/50 - Computer-aided design
• B23P 15/34 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
• B29C 33/00 - Moulds or coresDetails thereof or accessories therefor
• B22F 3/03 - Press-moulding apparatus therefor
• B23D 61/04 - Circular saw blades with inserted saw teeth

Abstract

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 comer of angle α. The cutting edge comprises a first cutting segment (S1) 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.

IPC Classes  ?

• B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
• B23B 27/14 - Cutting tools of which the bits or tips are of special material
• B23C 5/20 - Milling-cutters characterised by physical features other than shape with removable cutter-bits or teeth
• B23C 5/06 - Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
• B23B 27/04 - Cutting-off tools
• B23B 51/02 - Twist drills

Abstract

A method for designing a cutting edge of a cutting element configured for removing material from a workpiece to leave therein a desired end profile (B22,B24,B26). The method comprises the steps of modeling a desired end profile (B22,B24,B26) of the workpiece, the profile having a longitudinal axis and being defined by a bottom surface (B12), a side surface (B16) and an adjoining surface (B14) extending therebetween; defining a lead profile plane (RPL) and an trail profile plane (RPT) spaced therefrom, each of the planes being oriented perpendicular to the longitudinal axis; determining a profile contour defined by the intersection line between the end profile (B22,B24,B26)and the lead profile plane (RPL). The contour profile includes a bottom contour, an adjoining contour and a side contour defined as the intersection lines between the lead profile plane (RPL) and the bottom surface (B12), the adjoining surface (B14) and the side surface (B16) respectively; designing a rake surface and a relief surface, the intersection line between which defines a cutting edge lying in the adjoining surface (B14) and spanning between the lead profile plane (RPL) and the trail profile plane (RPT). The cutting edge is designed such that in any reference plane (RP; fig 6A) oriented perpendicularly to the cutting edge, the intersection between each of the rake surface and the relief surface with the reference plane (RP) defines a respective rake line (RK; fig 7) and relief line (RF; fig 7), the angle (θB) between the lines RK,RF) being equal to or smaller than a similar angle (θB) taken along each of a plurality of similar reference planes (RP) disposed between the reference plane (RPn) and the lead profile plane (RPL)

IPC Classes  ?

• B23B 51/02 - Twist drills
• B23C 5/06 - Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
• B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
• B23C 5/20 - Milling-cutters characterised by physical features other than shape with removable cutter-bits or teeth
• B22F 3/03 - Press-moulding apparatus therefor
• B27B 33/02 - Structural design of saw blades or saw teeth
• B23D 61/04 - Circular saw blades with inserted saw teeth
• B23D 61/14 - Straight saw bladesStrap saw blades with inserted saw teeth
• B23B 27/00 - Tools for turning or boring machinesTools of a similar kind in generalAccessories therefor
• B23B 27/04 - Cutting-off tools
• B23B 27/14 - Cutting tools of which the bits or tips are of special material
• B23B 27/22 - Cutting tools with chip-breaking equipment
• G06F 17/50 - Computer-aided design

Abstract

A cutting element for use in a cutting operation, comprising a cutting edge (CE) capable of cutting out material from a workpiece during the operation, to form therein a workpiece corner of angle alpha. There exists at least one view of the cutting edge in which a portion of the cutting edge is delimitable by a first (L1) and a second (L2) line oriented tangentially to the portion of the cutting edge portion at respective tangency points A and B. The lines form therebetween a cutting angle corresponding to the workpiece corner angle alpha and have a vertex 0. For a bisector of the cutting angle intersecting the portion of the cutting edge at the point C, the projection C of the point C of the portion of the cutting edge on a line OL passing through the vertex 0 perpendicularly to the plane of the one view is located between projections A1 and B′ of the respective points A and B of the portion of the cutting edge on the line OL.

IPC Classes  ?

• B23C 5/20 - Milling-cutters characterised by physical features other than shape with removable cutter-bits or teeth
• B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
• B23B 27/16 - Cutting tools of which the bits or tips are of special material with exchangeable cutting bits, e.g. able to be clamped
• B23B 29/04 - Tool holders for a single cutting tool
• B23B 51/02 - Twist drills
• B23C 5/06 - Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
• B23C 5/08 - Disc-type cutters
• B23C 5/16 - Milling-cutters characterised by physical features other than shape
• B23D 61/04 - Circular saw blades with inserted saw teeth

Abstract

A cutting element for use in a cutting operation, comprising a cutting edge (CE) capable of cutting out material from a workpiece during the operation, to form therein a workpiece corner of angle alpha. There exists at least one view of the cutting edge in which a portion of the cutting edge is delimitable by a first (Ll) and a second (L2) line oriented tangentially to the portion of the cutting edge portion at respective tangency points A and B. The lines form therebetween a cutting angle corresponding to the workpiece corner angle alpha and have a vertex 0. For a bisector of the cutting angle intersecting the portion of the cutting edge at the point C, the projection C of the point C of the portion of the cutiing edge on a line OL passing through the vertex 0 perpendicularly to the plane of the one view is located between projections A1 and B ' of the respective points A and B of the portion of the cutting edge on the line OL.

IPC Classes  ?

• B23B 27/16 - Cutting tools of which the bits or tips are of special material with exchangeable cutting bits, e.g. able to be clamped
• B23B 29/04 - Tool holders for a single cutting tool
• B23B 51/02 - Twist drills
• B23C 5/06 - Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
• B23C 5/08 - Disc-type cutters
• B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
• B23C 5/16 - Milling-cutters characterised by physical features other than shape
• B23C 5/20 - Milling-cutters characterised by physical features other than shape with removable cutter-bits or teeth
• B23D 45/08 - Sawing machines or sawing devices with circular saw blades or with friction saw discs with a ring blade having inside saw teeth