CA2601783C - Cutting bit for a tool, in particular for a milling tool - Google Patents
Cutting bit for a tool, in particular for a milling tool Download PDFInfo
- Publication number
- CA2601783C CA2601783C CA2601783A CA2601783A CA2601783C CA 2601783 C CA2601783 C CA 2601783C CA 2601783 A CA2601783 A CA 2601783A CA 2601783 A CA2601783 A CA 2601783A CA 2601783 C CA2601783 C CA 2601783C
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- Prior art keywords
- cutting
- face
- chip
- disposed
- workpiece
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/06—Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/165—Milling-cutters characterised by physical features other than shape with chipbreaking or chipdividing equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/202—Plate-like cutting inserts with special form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
- B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23C2222/04—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23C2222/52—Magnesium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23C2222/64—Nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/12—Boron nitride
- B23C2226/125—Boron nitride cubic [CBN]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/31—Diamond
- B23C2226/315—Diamond polycrystalline [PCD]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The cutting bit (2) is provided in particular for high-speed milling of light metals, in particular aluminium. To guarantee a reliable and defined chip flow as well as a defined chip control, the cutting bit includes a chip-breaker face (26), which is oriented towards a cutting edge (8) and extends at an acute angle (a) up to a machining surface (36).
Description
Description Cutting bit for a tool, in particular for a milling tool The invention relates to a cutting bit for a tool, in particular for a milling tool, with a cutting insert comprising a workpiece face and an end face, forming a corner area where a cutting edge for metal-cutting machining of the workpiece is arranged. Furthermore, the cutting insert includes a chip-breaker face.
Such cutting bits are described, for example, in DE 197 16 818 C2 or DE 20 2004 007 811 U1. These known cutting bits serve for application in a surface milling cutter, on which several of the bits are fastened on a cylindrical tool base body and are distributed over its periphery. The tool base body consists of light metal, in particular of aluminium or an aluminium alloy. Due to the relatively soft material, a chip-deflecting element or a chip breaker are provided according to the state of the art, which keeps the chip removed by metal-cutting machining of the workpiece away from the tool base body to avoid that the latter is damaged.
In DE 197 16 818 C2, a chip flute of the cutting bit properly speaking is extended by an additional chip-deflecting element in peripheral direction of the surface milling cutter. In DE 20 2004 007 811 U1, a chip breaker projecting over the contour of the cutting bit and limiting the chip flute is described for the same purpose.
These two chip-deflecting elements serve, however, only for the protection of the tool base body. In particular metal-cutting machining of soft materials, such as, for example, light-metal workpieces made of aluminium, entails the problem that die cut-off light-metal chips are very difficult to remove and show a relatively high adhesive strength. Therefore, there is the risk that such a chip might damage the workpiece surface.
An embodiment of the present invention is, therefore, based on the object to provide a cutting bit guaranteeing a safe and reliable chip flow, thus avoiding damage to both the tool base body and the workpiece to be machined.
-1a-An aspect of the invention relates to a cutting bit for a tool, in particular for a milling tool, with a cutting insert including a workpiece face defining a machining surface defined by a radial direction and a cutting direction, an end face, adjacent to the workpiece face, defined by the cutting direction and an axial direction, a cutting edge for metal-cutting machining of a workpiece, arranged in a front corner area, viewed in a cutting direction, which is formed by the workpiece face and the end face, a chip-breaker comprising a chip-breaker face, extending it cutting direction beyond the cutting edge and at a distance from the latter in radial direction, wherein the chip-breaker face is oriented towards the cutting edge and is disposed at an acute angle a with respect to each of a back surface of said chip-breaker and said machining surface.
Another aspect of the invention relates to a face milling cutter for cutting aluminum, said face milling cutter comprising: a rotary tool body comprising one of: aluminum and an aluminum alloy; said tool body comprising a shank end and a cutting end; said shank end being configured to be connected to a tool holder to permit rotation of said tool body about a central rotational axis, and radial and axial movement of said tool body with respect to the central rotational axis, in a cutting process; said cutting end having an end face being configured to face toward a machining surface of a workpiece to be cut during a cutting process;
said cutting end comprising a plurality of receiving pockets disposed about the periphery thereof; a plurality of cutting inserts; each of said plurality of cutting inserts being disposed in a corresponding one of said plurality of receiving pockets; each of said cutting inserts comprising a through hole; a plurality of fastening screws; each of said fastening screws being disposed to pass through a corresponding one of said through holes to fasten said cutting inserts to said tool body; each of said cutting inserts further comprising: a workpiece face being disposed to extend along a substantially radial direction away from the central rotational axis of said tool body; said workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process; an end face being disposed adjacent and substantially perpendicular to said workpiece face, and to face radially outward and away from the central rotational axis of said tool body; said end face being configured and -1b-disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process; a front face being disposed substantially transverse to each of said workpiece face and said end face, and to extend along a substantially radial direction away from the central rotational axis of said tool body; said front face being configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process; a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face; a chip-breaker wedge being disposed to project out of and away from said front face substantially in the direction of rotation said rotary tool body; said cutting edge being disposed radially further from said central rotational axis of said tool body than said chip-breaker wedge; said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface; said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process; said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process; said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of aluminum chips produced during cutting of an aluminum workpiece away from both the workpiece and said tool body to minimize damage to the workpiece and said tool body caused by the chips.
A further aspect of the invention relates to a milling cutter for cutting light metals, said milling cutter comprising: a rotary tool body comprising a light metal; said tool body comprising a shank end and a cutting end; said shank end being configured to be connected to a tool holder to permit rotation of said tool body about a central rotational axis, and radial and axial movement of said tool body with respect to the central rotational axis, in a cutting process; said cutting end having an end face being configured to face toward a machining surface of a workpiece to be cut during a cutting process; said cutting end comprising a plurality of receiving pockets disposed about the periphery thereof; a plurality of - 1c-cutting inserts; each of said plurality of cutting inserts being disposed in a corresponding one of said plurality of receiving pockets; and each of said cutting inserts further comprising: a workpiece face being disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process; an end face being disposed adjacent and substantially perpendicular to said workpiece face; a front face being disposed substantially transverse to each of said workpiece face and said end face; a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face; a chip-breaker wedge being disposed to project out of and away from said front face;
said cutting edge being disposed radially further from said central rotational axis of said tool body than said chip-breaker wedge; said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface; said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process; said back surface being connected to and disposed to extend from said workpiece face; said chip-breaker surface being disposed to face substantially toward said corner area; said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process; said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of chips produced during cutting of a workpiece away from both the workpiece and said tool body in which said cutting inserts are mounted to minimize damage to the workpiece and said tool body caused by the chips.
A still further aspect of the invention relates to a cutting insert for a milling cutter comprising: a workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process;
an end face being disposed adjacent and substantially perpendicular to said workpiece face; a front face being disposed substantially transverse to each of said workpiece face and said end face; a cutting edge being disposed at a corner -1d-area formed at the intersection of said workpiece face, said end face, and said front face; a chip-breaker wedge being disposed to project out of and away from said front face; said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface;
said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process; said back surface being connected to and disposed to extend from said workpiece face; said chip-breaker surface being disposed to face substantially toward said corner area; said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process; said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of chips produced during cutting of a workpiece away from both the workpiece and a tool body in which said cutting inserts are mounted to minimize damage to the workpiece and the tool body caused by the chips.
The cutting bit comprises a cutting insert, which usually has a rectangular parallel epipedal basic geometry. The cutting insert includes a workpiece face, which in mounted condition and during operation of the milling tool faces the workpiece. The workpiece face defines a machining surface which during operation coincides with the surface of the workpiece to be machined.
In principle, this workpiece surface can also be curved. The machining surface is defined by a radial direction and a cutting direction of the workpiece face.
The cutting insert is, furthermore, limited by an end face, which is usually perpendicular to the machining surface and forms a corner area with the workpiece face. In this corner area, a cutting edge, designed in particular as a cutting corner, is arranged for chipping or metal-cutting machining of the workpiece. To enable a safe and reliable chip flow, the cutting insert comprises, furthermore, a chip-breaker face, oriented towards the cutting edge and extending at an acute angle up to the machining surface.
-1e-Therefore, the chip-breaker face is designed such that it merges into the machining surface as continually as possible and without an abrupt transition.
Thus, altogether, a chip-deflecting element is formed which, viewed from the side or in cross-section, is wedge-shaped, the wedge "sliding" at a little distance over the surface of the workpiece and being oriented with the tip of the wedge facing the cutting edge. Through this measure, the chip removed by the cutting edge is lifted from the surface of the tool by the gradually ascending chip-breaker face and is safely removed. This avoids damage to the tool surface.
In addition to safe chip deflection, the chip-breaker face serves for chip control. For this purpose, the chip-breaker face is expediently of a curved shape. Therefore, the chip-deflecting element including the chip-breaker face can also be qualified as a chip former.
The radial direction and the cutting direction are defined by the arrangement of, in particular, the cutting edge. As the cutting bit with the cutting edge is fastened to a rotatable tool base body, there must be sufficient clearance in front of the cutting edge in peripheral direction or direction of rotation of the milling tool. The peripheral direction or direction of rotation of the milling tool is understood to be the cutting direction. The radial direction is oriented perpendicularly to the cutting direction. In the following, one understands by radial sides or faces those faces of the cutting bit which extend parallelly or substantially parallelly to the radial direction.
Such a cutting bit is provided, together with a plurality of further cutting bits, for being fastened to a cylindrical tool base body in order to form a surface milling cutter. The cutting bit can also be used in other milling tools. The cutting bit is provided in particular for machining light-metal workpieces at high cutting speeds up to more than 2000 m per minute.
In view of the desired safe chip flow, the acute angle preferably lies in the range of approx. 30 to 600 and is particular approx. 45 .
The cutting insert preferably comprises a chip flute including a chip-flute wall substan-tially oriented in cutting direction, said chip-flute wall including the chip-breaker face.
This chip-flute wall oriented in cutting direction is formed in particular by the chip-breaker face. The main direction of extension of the chip-breaker face is perpendicular to the peripheral direction or direction of rotation (cutting direction) of the milling tool in operation. The wedge formed by the chip-deflecting element is, therefore, oriented in radial direction, i.e. the tip of the wedge is facing radially outwards.
According to an expedient development, the chip-breaker face is inclined to the axial direction at an angle of inclination. Thanks to the inclined design, the chip is reliably directed into the chip flute, without the risk of exiting the chip flute in cutting direction.
To achieve a reliable and defined chip control and chip deflection, the chip-breaker face is in an expedient design curved and forms approximately a quarter circle.
Therefore, the chip-breaker face extends approximately over an angular range of 900.
According to an expedient development, the chip flute comprises a radial chip-flute wall extending in substantially radial direction and oriented towards the end face.
At least in the area of the end face, it is inclined to the latter at a radial angle of inclination, so that an angle < 90 is formed between the radial chip-flute wall and the end face.
Therefore, the radial chip-flute wall does not run out perpendicularly to the boundary surface on the end face of the cutting bit, but also forms with this boundary surface an acute angle, so that here, too, a kind of chip-breaker wedge is formed, which directs the chip safely into the chip flute.
Due to the intended high cutting speeds of high-speed milling of up to over 2000 m per minute, very high radial forces are acting upon the cutting bit. To guarantee a defined position of the cutting bit during high-speed milling operations, a protruding element is provided for radial locking. This protruding element projects over a cutting-insert bearing face extending in radial direction, with which the cutting bit is clamped against a counter-support on the tool base body. Therefore, the protruding element forms in mounted condition a positive locking which is effective in radial direction.
This design can in principle also be used independently of the special geometry and arrangement of the chip-breaker face and is in general advantageous for cutting bits intended for a high-speed milling application. In connection with the chip breaker, this design for radial locking offers the particular advantage that the defined specified position of the entire cutting bit, necessary for the specific chip flow, is maintained during the operation. The filing of a divisional application for this aspect, independently of the special design of the chip-breaker face, is reserved.
To achieve the simplest design possible, the cutting insert consists of a base body and a cutting element fastened to it, which includes the cutting edge. This cutting element is designed in particular in the manner of a cutting plate and is firmly joined to the base body by gluing and in particular by brazing.
To achieve good cutting results, in particular in light-metal machining, the cutting element according to an expedient development consists of a diamond or a boron-nitride cutting material. In particular, polycristalline diamond or polycristalline boron nitride are used here. Alternatively, carbide or ceramic can also be used as cutting materials for the cutting element.
In an advantageous design, the base body is manufactured and formed by means of a sintering process. The design as a sintered base body enables an economic manu-facture even of complex geometries with the desired properties of the material. In particular for the special geometry of the chip-breaker face described here, other manufacturing variants are complicated and, therefore, expensive. The formation of the cutting bit or its base body as a sintered body can be used for cutting bits in general and is not limited to a cutting bit with the special geometry of the chip-breaker face described here. The filing of a divisional application for this aspect, independently of the special design of the chip-breaker face, is reserved.
Expediently, the sintered base body is in this case made of a metal powder.
Its basic material is preferably iron, with admixtures of nickel and copper.
Expediently, the share of nickel lies in the range of approx. 3.5 - 4.5 % in weight, the share of copper, in the range of approx. 1.2 - 1.8 % in weight. Furthermore, a share of molybdenum in the range of approx. 0.4 - 0.6 % in weight is provided. The remaining shares are iron. In addition, the sintered base body includes additives, in particular in the range of 0.7 -0.9 % in weight, which are added as sintering aids.
Such cutting bits are described, for example, in DE 197 16 818 C2 or DE 20 2004 007 811 U1. These known cutting bits serve for application in a surface milling cutter, on which several of the bits are fastened on a cylindrical tool base body and are distributed over its periphery. The tool base body consists of light metal, in particular of aluminium or an aluminium alloy. Due to the relatively soft material, a chip-deflecting element or a chip breaker are provided according to the state of the art, which keeps the chip removed by metal-cutting machining of the workpiece away from the tool base body to avoid that the latter is damaged.
In DE 197 16 818 C2, a chip flute of the cutting bit properly speaking is extended by an additional chip-deflecting element in peripheral direction of the surface milling cutter. In DE 20 2004 007 811 U1, a chip breaker projecting over the contour of the cutting bit and limiting the chip flute is described for the same purpose.
These two chip-deflecting elements serve, however, only for the protection of the tool base body. In particular metal-cutting machining of soft materials, such as, for example, light-metal workpieces made of aluminium, entails the problem that die cut-off light-metal chips are very difficult to remove and show a relatively high adhesive strength. Therefore, there is the risk that such a chip might damage the workpiece surface.
An embodiment of the present invention is, therefore, based on the object to provide a cutting bit guaranteeing a safe and reliable chip flow, thus avoiding damage to both the tool base body and the workpiece to be machined.
-1a-An aspect of the invention relates to a cutting bit for a tool, in particular for a milling tool, with a cutting insert including a workpiece face defining a machining surface defined by a radial direction and a cutting direction, an end face, adjacent to the workpiece face, defined by the cutting direction and an axial direction, a cutting edge for metal-cutting machining of a workpiece, arranged in a front corner area, viewed in a cutting direction, which is formed by the workpiece face and the end face, a chip-breaker comprising a chip-breaker face, extending it cutting direction beyond the cutting edge and at a distance from the latter in radial direction, wherein the chip-breaker face is oriented towards the cutting edge and is disposed at an acute angle a with respect to each of a back surface of said chip-breaker and said machining surface.
Another aspect of the invention relates to a face milling cutter for cutting aluminum, said face milling cutter comprising: a rotary tool body comprising one of: aluminum and an aluminum alloy; said tool body comprising a shank end and a cutting end; said shank end being configured to be connected to a tool holder to permit rotation of said tool body about a central rotational axis, and radial and axial movement of said tool body with respect to the central rotational axis, in a cutting process; said cutting end having an end face being configured to face toward a machining surface of a workpiece to be cut during a cutting process;
said cutting end comprising a plurality of receiving pockets disposed about the periphery thereof; a plurality of cutting inserts; each of said plurality of cutting inserts being disposed in a corresponding one of said plurality of receiving pockets; each of said cutting inserts comprising a through hole; a plurality of fastening screws; each of said fastening screws being disposed to pass through a corresponding one of said through holes to fasten said cutting inserts to said tool body; each of said cutting inserts further comprising: a workpiece face being disposed to extend along a substantially radial direction away from the central rotational axis of said tool body; said workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process; an end face being disposed adjacent and substantially perpendicular to said workpiece face, and to face radially outward and away from the central rotational axis of said tool body; said end face being configured and -1b-disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process; a front face being disposed substantially transverse to each of said workpiece face and said end face, and to extend along a substantially radial direction away from the central rotational axis of said tool body; said front face being configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process; a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face; a chip-breaker wedge being disposed to project out of and away from said front face substantially in the direction of rotation said rotary tool body; said cutting edge being disposed radially further from said central rotational axis of said tool body than said chip-breaker wedge; said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface; said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process; said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process; said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of aluminum chips produced during cutting of an aluminum workpiece away from both the workpiece and said tool body to minimize damage to the workpiece and said tool body caused by the chips.
A further aspect of the invention relates to a milling cutter for cutting light metals, said milling cutter comprising: a rotary tool body comprising a light metal; said tool body comprising a shank end and a cutting end; said shank end being configured to be connected to a tool holder to permit rotation of said tool body about a central rotational axis, and radial and axial movement of said tool body with respect to the central rotational axis, in a cutting process; said cutting end having an end face being configured to face toward a machining surface of a workpiece to be cut during a cutting process; said cutting end comprising a plurality of receiving pockets disposed about the periphery thereof; a plurality of - 1c-cutting inserts; each of said plurality of cutting inserts being disposed in a corresponding one of said plurality of receiving pockets; and each of said cutting inserts further comprising: a workpiece face being disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process; an end face being disposed adjacent and substantially perpendicular to said workpiece face; a front face being disposed substantially transverse to each of said workpiece face and said end face; a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face; a chip-breaker wedge being disposed to project out of and away from said front face;
said cutting edge being disposed radially further from said central rotational axis of said tool body than said chip-breaker wedge; said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface; said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process; said back surface being connected to and disposed to extend from said workpiece face; said chip-breaker surface being disposed to face substantially toward said corner area; said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process; said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of chips produced during cutting of a workpiece away from both the workpiece and said tool body in which said cutting inserts are mounted to minimize damage to the workpiece and said tool body caused by the chips.
A still further aspect of the invention relates to a cutting insert for a milling cutter comprising: a workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process;
an end face being disposed adjacent and substantially perpendicular to said workpiece face; a front face being disposed substantially transverse to each of said workpiece face and said end face; a cutting edge being disposed at a corner -1d-area formed at the intersection of said workpiece face, said end face, and said front face; a chip-breaker wedge being disposed to project out of and away from said front face; said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface;
said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process; said back surface being connected to and disposed to extend from said workpiece face; said chip-breaker surface being disposed to face substantially toward said corner area; said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process; said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of chips produced during cutting of a workpiece away from both the workpiece and a tool body in which said cutting inserts are mounted to minimize damage to the workpiece and the tool body caused by the chips.
The cutting bit comprises a cutting insert, which usually has a rectangular parallel epipedal basic geometry. The cutting insert includes a workpiece face, which in mounted condition and during operation of the milling tool faces the workpiece. The workpiece face defines a machining surface which during operation coincides with the surface of the workpiece to be machined.
In principle, this workpiece surface can also be curved. The machining surface is defined by a radial direction and a cutting direction of the workpiece face.
The cutting insert is, furthermore, limited by an end face, which is usually perpendicular to the machining surface and forms a corner area with the workpiece face. In this corner area, a cutting edge, designed in particular as a cutting corner, is arranged for chipping or metal-cutting machining of the workpiece. To enable a safe and reliable chip flow, the cutting insert comprises, furthermore, a chip-breaker face, oriented towards the cutting edge and extending at an acute angle up to the machining surface.
-1e-Therefore, the chip-breaker face is designed such that it merges into the machining surface as continually as possible and without an abrupt transition.
Thus, altogether, a chip-deflecting element is formed which, viewed from the side or in cross-section, is wedge-shaped, the wedge "sliding" at a little distance over the surface of the workpiece and being oriented with the tip of the wedge facing the cutting edge. Through this measure, the chip removed by the cutting edge is lifted from the surface of the tool by the gradually ascending chip-breaker face and is safely removed. This avoids damage to the tool surface.
In addition to safe chip deflection, the chip-breaker face serves for chip control. For this purpose, the chip-breaker face is expediently of a curved shape. Therefore, the chip-deflecting element including the chip-breaker face can also be qualified as a chip former.
The radial direction and the cutting direction are defined by the arrangement of, in particular, the cutting edge. As the cutting bit with the cutting edge is fastened to a rotatable tool base body, there must be sufficient clearance in front of the cutting edge in peripheral direction or direction of rotation of the milling tool. The peripheral direction or direction of rotation of the milling tool is understood to be the cutting direction. The radial direction is oriented perpendicularly to the cutting direction. In the following, one understands by radial sides or faces those faces of the cutting bit which extend parallelly or substantially parallelly to the radial direction.
Such a cutting bit is provided, together with a plurality of further cutting bits, for being fastened to a cylindrical tool base body in order to form a surface milling cutter. The cutting bit can also be used in other milling tools. The cutting bit is provided in particular for machining light-metal workpieces at high cutting speeds up to more than 2000 m per minute.
In view of the desired safe chip flow, the acute angle preferably lies in the range of approx. 30 to 600 and is particular approx. 45 .
The cutting insert preferably comprises a chip flute including a chip-flute wall substan-tially oriented in cutting direction, said chip-flute wall including the chip-breaker face.
This chip-flute wall oriented in cutting direction is formed in particular by the chip-breaker face. The main direction of extension of the chip-breaker face is perpendicular to the peripheral direction or direction of rotation (cutting direction) of the milling tool in operation. The wedge formed by the chip-deflecting element is, therefore, oriented in radial direction, i.e. the tip of the wedge is facing radially outwards.
According to an expedient development, the chip-breaker face is inclined to the axial direction at an angle of inclination. Thanks to the inclined design, the chip is reliably directed into the chip flute, without the risk of exiting the chip flute in cutting direction.
To achieve a reliable and defined chip control and chip deflection, the chip-breaker face is in an expedient design curved and forms approximately a quarter circle.
Therefore, the chip-breaker face extends approximately over an angular range of 900.
According to an expedient development, the chip flute comprises a radial chip-flute wall extending in substantially radial direction and oriented towards the end face.
At least in the area of the end face, it is inclined to the latter at a radial angle of inclination, so that an angle < 90 is formed between the radial chip-flute wall and the end face.
Therefore, the radial chip-flute wall does not run out perpendicularly to the boundary surface on the end face of the cutting bit, but also forms with this boundary surface an acute angle, so that here, too, a kind of chip-breaker wedge is formed, which directs the chip safely into the chip flute.
Due to the intended high cutting speeds of high-speed milling of up to over 2000 m per minute, very high radial forces are acting upon the cutting bit. To guarantee a defined position of the cutting bit during high-speed milling operations, a protruding element is provided for radial locking. This protruding element projects over a cutting-insert bearing face extending in radial direction, with which the cutting bit is clamped against a counter-support on the tool base body. Therefore, the protruding element forms in mounted condition a positive locking which is effective in radial direction.
This design can in principle also be used independently of the special geometry and arrangement of the chip-breaker face and is in general advantageous for cutting bits intended for a high-speed milling application. In connection with the chip breaker, this design for radial locking offers the particular advantage that the defined specified position of the entire cutting bit, necessary for the specific chip flow, is maintained during the operation. The filing of a divisional application for this aspect, independently of the special design of the chip-breaker face, is reserved.
To achieve the simplest design possible, the cutting insert consists of a base body and a cutting element fastened to it, which includes the cutting edge. This cutting element is designed in particular in the manner of a cutting plate and is firmly joined to the base body by gluing and in particular by brazing.
To achieve good cutting results, in particular in light-metal machining, the cutting element according to an expedient development consists of a diamond or a boron-nitride cutting material. In particular, polycristalline diamond or polycristalline boron nitride are used here. Alternatively, carbide or ceramic can also be used as cutting materials for the cutting element.
In an advantageous design, the base body is manufactured and formed by means of a sintering process. The design as a sintered base body enables an economic manu-facture even of complex geometries with the desired properties of the material. In particular for the special geometry of the chip-breaker face described here, other manufacturing variants are complicated and, therefore, expensive. The formation of the cutting bit or its base body as a sintered body can be used for cutting bits in general and is not limited to a cutting bit with the special geometry of the chip-breaker face described here. The filing of a divisional application for this aspect, independently of the special design of the chip-breaker face, is reserved.
Expediently, the sintered base body is in this case made of a metal powder.
Its basic material is preferably iron, with admixtures of nickel and copper.
Expediently, the share of nickel lies in the range of approx. 3.5 - 4.5 % in weight, the share of copper, in the range of approx. 1.2 - 1.8 % in weight. Furthermore, a share of molybdenum in the range of approx. 0.4 - 0.6 % in weight is provided. The remaining shares are iron. In addition, the sintered base body includes additives, in particular in the range of 0.7 -0.9 % in weight, which are added as sintering aids.
To enable a safe, troublefree chip deflection with as little friction as possible, the cutting bit according to an advantageous development is provided with a suitable coating, at least in partial areas. This coating is a sliding layer or a hard-material coating. It is applied in particular in those areas of the cutting bit which get into contact with the chips. These are in particular the chip-breaker face as well as the other chip-flute walls defining the chip flute. In principle, it is also possible to provide the entire cutting bit with the coating. Only the cutting element provided with the cutting edge has to be covered during the coating process in order to avoid a coating of the cutting edge.
Suitable sliding layers are here in particular an MoS2 layer or a DLC (diamond-like carbon) layer.
A suitable hard-material layer would be, for example, a TiAIN layer or a TiB2 layer.
One embodiment of the invention will be described in detail in the following, by means of the drawing, in which, in schematic and partly simplified representation:
Fig. 1 is a view of a cutting bit in a first perspective representation, Fig. 2 is a view of the cutting bit in a second perspective representation, Fig. 3 is a top view of the top side of the cutting bit according to Fig. 1 and 2 in a schematic representation, Fig. 4 is a front view of a chip-flute face of the cutting bit, Fig. 5 is a top view from below of a workpiece face of the cutting bit, Fig. 6 is a detail view of the area marked in Fig. 4 by a circle, in which a cutting element is arranged, and Fig. 7 is a perspective view of a surface milling cutter with a plurality of cutting bits arranged along the periphery.
In the figures, parts having identical effects are marked with identical reference numbers.
The cutting bit represented in Fig. 1 to 5 consists of an integral cutting insert 2, which in turn consists of a sintered base body 4 and a cutting element 6 fastened to the latter, in particular by brazing. As is evident in particular from Fig. 1 and 2, the cutting element 6 is a cutting plate of prism-like shape. The cutting element 6 consists in particular of a polycristalline diamond material. The base body 4 is made by a sintering process of a metal powder. By means of this shaping and manufacturing method of the base body 4, in particular the complex geometry of the embodiment can be produced in an economic way and with relatively low expenditure.
The cutting element 6 includes a cutting edge 8, designed in particular as a cutting corner. When machining a metal workpiece, this cutting edge 8 is in engagement with the surface of the workpiece.
The cutting insert 2 has altogether an approximately parallel epipedal basic geometry, part of this parallel epipedal basic geometry being free from material and constituting a chip flute 10. The cutting insert 2 has a bottom workpiece face 12 assigned to the workpiece during the machining operation and, opposite to it, a top side 14, which is approximately parallel to it. The other four sides of the parallelepiped lying between these two sides 12, 14 are a front end face 16, which is at least substantially perpen-dicular to the workpiece face 12, a bearing face 18, which is parallel to the latter, a cutting-insert support face 20 as well as, opposite to the cutting-insert support face 20, a chip-flute face 22. The chip flute 10 itself is defined by a radial chip-flute wall 24 and another chip-flute wall, which is approximately perpendicular to it and which is designed as a chip-breaker face 26.
Approximately in the center of the radial chip-flute wall 24, a through hole 28 is provided, through which a fastening element, in particular a fastening screw 32, is passed for fastening to a tool base body 30 (see Fig. 7).
Furthermore, the cutting insert 2 includes on its cutting-insert support face 20 a pro-truding element 34 projecting from that face. The latter has substantially the shape of an elongated parallelepiped with an insertion bevel and is in alignment with the axial bearing face 18. Thus, the protruding element 34 is arranged in the rear area remote from the cutting edge 8. As is evident in particular from Fig. 2, the protruding element 34 is set back from the top side 14 by an offset.
The workpiece face 12 substantially defines a machining surface 36, as shown in Fig. 7. This machining surface 36 corresponds to the plane defined by the individual cutting corners of the cutting edges 8 of the surface milling cutter 38 shown in Fig. 7.
In general, the cutting insert 2 is fastened to the rotatable, substantially cylindrical tool base body 30. The free end of the cutting element 6 is oriented towards the chip flute 10 and in the direction of rotation or peripheral direction. This peripheral direction is in the following referred to as cutting direction 40. Perpendicular to it, a radial direction 42 is defined. Together, they define the machining surface 36. An axial direction 44 is oriented perpendicularly to this surface.
As can is evident in particular from the perspective view of Fig. 2, the chip-breaker face 26 forms the surface of a chip-breaker element integrally formed into the cutting insert 2. Said chip-breaker element latter is shaped like a wedge whose tip is oriented towards the cutting element 6. The surface of the wedge is formed by the chip-breaker face 26.
The bottom side of the wedge is formed by the workpiece face 12 oriented towards the workpiece. Therefore, during machining of the workpiece, the wedge-shaped chip-de-flecting element almost rests on the surface of the workpiece. The chip-breaker face 26 runs out towards the machining surface 36, forming an acute wedge angle a. The front edge 46, limiting the chip-breaker face 26, is set back in radial direction 42 from the cutting element 6. In the exemplary embodiment, the wedge angle a is approx.
50 . The definition of the wedge angle a is best seen in the view of Fig. 4.
As is evident in particular from the views of Fig. 2 and 3, the cutting insert 2 is provided with a second chip-breaker wedge, which is formed by the front end face 16 and the course of the radial chip-flute wall 24 in the area of the front end face 16.
In the area of the cutting element 6, the radial chip-flute wall 24 extends at a radial angle of inclination R1 to the radial direction 42. The radial angle of inclination l31 lies preferably in the range of 20 to 45 . In the exemplary embodiment, it is approx. 30 .
Just like the radial chip-flute wall 24, the chip-flute wall forming the chip-breaker face 26 is also inclined to the pure cutting direction 40 by an angle of inclination (32, as is evi-dent in particular from Fig. 3. The angle of inclination (32 lies, for example, in the range of 15 to 30 .
Further details of the cutting insert 2 are evident from Fig. 4 to 6. Fig. 4 is a top view of the chip-flute face 22, in which the wedge angle a and the curved course of the chip-breaker face 26 can be seen. The latter extends approximately along part of a circle and over an angular range of approx. 90 . Furthermore, it is evident from Fig.
4 that in radial direction 42, adjacent to the cutting edge 8, the cutting element 6 has a positive rake angle yin the range of approx. 10 . The bottom side of the chip-breaker element (bottom side of the wedge) oriented towards the workpiece face 12 is set back a little from the machining face 36 or machining plane and is slightly inclined to the latter in radial direction 42. The corresponding angle of inclination 5 is in the exemplary embodi-ment approx. 3 .
Fig. 5 is a view of the cutting insert 2 shown in Fig. 4, rotated anticlockwise by 90 , so that Fig. 5 is a top view from below of the workpiece face 12 facing the workpiece to be machined. In this representation, the angle of inclination (31, which is in this case 22 , can be seen very well. Furthermore, the protruding element 34 is clearly evident from Fig. 5.
Fig. 6 is an enlarged view of the cutting-edge area marked with a circle in Fig. 4. From Fig. 4 and Fig. 6, it is evident that the cutting element 6 is flush with the front end face 16 and in the edge area facting the workpiece face 12 forms the cutting edge 8. In the edge area, the cutting edge 8 is provided with a chamfer 48.
Fig. 7 shows the surface milling cutter 38 with cutting inserts 2 distributed over its circumference. The individual cutting inserts 2 are mounted in pocket-like recesses of the tool base body 30. Alternatively, the cutting inserts 2 can also be mounted in cassettes which are provided for that purpose and fastened on the tool base body 30.
The cutting-insert support faces 20 as well as the bearing face 18 of the individual cutting inserts 2 are clamped against corresponding counter-bearing faces of the tool base body 30. The latter is provided with a recess, not recognizable here, for receiving the protruding element 34. The protruding element 34 lies in this recess with perfect positive fit, so that a positive locking acting in radial direction 42 is given. The direction of rotation 50 of the surface milling cutter 38 during milling is indicated by an arrow. The tool base body 30 preferably consists of light metal.
The cutting insert 2 described here is characterized by a very efficient and reliable chip flow, in particular during high-speed milling of light-metal workpieces. The chip-breaker face 26 running out towards the machining surface 36 at an acute angle provides a safe chip deflection and a defined chip control, thus avoiding damage to both the milling tool 38 and the workpiece to be machined. The specific chip guidance is further supported by the design of the chip-breaker face 26 and the radial chip-flute wall 24, which are inclined to each other, so that the chip is guided into the chip flute and then deflected in Z-direction away from the workpiece surface to be machined.
Suitable sliding layers are here in particular an MoS2 layer or a DLC (diamond-like carbon) layer.
A suitable hard-material layer would be, for example, a TiAIN layer or a TiB2 layer.
One embodiment of the invention will be described in detail in the following, by means of the drawing, in which, in schematic and partly simplified representation:
Fig. 1 is a view of a cutting bit in a first perspective representation, Fig. 2 is a view of the cutting bit in a second perspective representation, Fig. 3 is a top view of the top side of the cutting bit according to Fig. 1 and 2 in a schematic representation, Fig. 4 is a front view of a chip-flute face of the cutting bit, Fig. 5 is a top view from below of a workpiece face of the cutting bit, Fig. 6 is a detail view of the area marked in Fig. 4 by a circle, in which a cutting element is arranged, and Fig. 7 is a perspective view of a surface milling cutter with a plurality of cutting bits arranged along the periphery.
In the figures, parts having identical effects are marked with identical reference numbers.
The cutting bit represented in Fig. 1 to 5 consists of an integral cutting insert 2, which in turn consists of a sintered base body 4 and a cutting element 6 fastened to the latter, in particular by brazing. As is evident in particular from Fig. 1 and 2, the cutting element 6 is a cutting plate of prism-like shape. The cutting element 6 consists in particular of a polycristalline diamond material. The base body 4 is made by a sintering process of a metal powder. By means of this shaping and manufacturing method of the base body 4, in particular the complex geometry of the embodiment can be produced in an economic way and with relatively low expenditure.
The cutting element 6 includes a cutting edge 8, designed in particular as a cutting corner. When machining a metal workpiece, this cutting edge 8 is in engagement with the surface of the workpiece.
The cutting insert 2 has altogether an approximately parallel epipedal basic geometry, part of this parallel epipedal basic geometry being free from material and constituting a chip flute 10. The cutting insert 2 has a bottom workpiece face 12 assigned to the workpiece during the machining operation and, opposite to it, a top side 14, which is approximately parallel to it. The other four sides of the parallelepiped lying between these two sides 12, 14 are a front end face 16, which is at least substantially perpen-dicular to the workpiece face 12, a bearing face 18, which is parallel to the latter, a cutting-insert support face 20 as well as, opposite to the cutting-insert support face 20, a chip-flute face 22. The chip flute 10 itself is defined by a radial chip-flute wall 24 and another chip-flute wall, which is approximately perpendicular to it and which is designed as a chip-breaker face 26.
Approximately in the center of the radial chip-flute wall 24, a through hole 28 is provided, through which a fastening element, in particular a fastening screw 32, is passed for fastening to a tool base body 30 (see Fig. 7).
Furthermore, the cutting insert 2 includes on its cutting-insert support face 20 a pro-truding element 34 projecting from that face. The latter has substantially the shape of an elongated parallelepiped with an insertion bevel and is in alignment with the axial bearing face 18. Thus, the protruding element 34 is arranged in the rear area remote from the cutting edge 8. As is evident in particular from Fig. 2, the protruding element 34 is set back from the top side 14 by an offset.
The workpiece face 12 substantially defines a machining surface 36, as shown in Fig. 7. This machining surface 36 corresponds to the plane defined by the individual cutting corners of the cutting edges 8 of the surface milling cutter 38 shown in Fig. 7.
In general, the cutting insert 2 is fastened to the rotatable, substantially cylindrical tool base body 30. The free end of the cutting element 6 is oriented towards the chip flute 10 and in the direction of rotation or peripheral direction. This peripheral direction is in the following referred to as cutting direction 40. Perpendicular to it, a radial direction 42 is defined. Together, they define the machining surface 36. An axial direction 44 is oriented perpendicularly to this surface.
As can is evident in particular from the perspective view of Fig. 2, the chip-breaker face 26 forms the surface of a chip-breaker element integrally formed into the cutting insert 2. Said chip-breaker element latter is shaped like a wedge whose tip is oriented towards the cutting element 6. The surface of the wedge is formed by the chip-breaker face 26.
The bottom side of the wedge is formed by the workpiece face 12 oriented towards the workpiece. Therefore, during machining of the workpiece, the wedge-shaped chip-de-flecting element almost rests on the surface of the workpiece. The chip-breaker face 26 runs out towards the machining surface 36, forming an acute wedge angle a. The front edge 46, limiting the chip-breaker face 26, is set back in radial direction 42 from the cutting element 6. In the exemplary embodiment, the wedge angle a is approx.
50 . The definition of the wedge angle a is best seen in the view of Fig. 4.
As is evident in particular from the views of Fig. 2 and 3, the cutting insert 2 is provided with a second chip-breaker wedge, which is formed by the front end face 16 and the course of the radial chip-flute wall 24 in the area of the front end face 16.
In the area of the cutting element 6, the radial chip-flute wall 24 extends at a radial angle of inclination R1 to the radial direction 42. The radial angle of inclination l31 lies preferably in the range of 20 to 45 . In the exemplary embodiment, it is approx. 30 .
Just like the radial chip-flute wall 24, the chip-flute wall forming the chip-breaker face 26 is also inclined to the pure cutting direction 40 by an angle of inclination (32, as is evi-dent in particular from Fig. 3. The angle of inclination (32 lies, for example, in the range of 15 to 30 .
Further details of the cutting insert 2 are evident from Fig. 4 to 6. Fig. 4 is a top view of the chip-flute face 22, in which the wedge angle a and the curved course of the chip-breaker face 26 can be seen. The latter extends approximately along part of a circle and over an angular range of approx. 90 . Furthermore, it is evident from Fig.
4 that in radial direction 42, adjacent to the cutting edge 8, the cutting element 6 has a positive rake angle yin the range of approx. 10 . The bottom side of the chip-breaker element (bottom side of the wedge) oriented towards the workpiece face 12 is set back a little from the machining face 36 or machining plane and is slightly inclined to the latter in radial direction 42. The corresponding angle of inclination 5 is in the exemplary embodi-ment approx. 3 .
Fig. 5 is a view of the cutting insert 2 shown in Fig. 4, rotated anticlockwise by 90 , so that Fig. 5 is a top view from below of the workpiece face 12 facing the workpiece to be machined. In this representation, the angle of inclination (31, which is in this case 22 , can be seen very well. Furthermore, the protruding element 34 is clearly evident from Fig. 5.
Fig. 6 is an enlarged view of the cutting-edge area marked with a circle in Fig. 4. From Fig. 4 and Fig. 6, it is evident that the cutting element 6 is flush with the front end face 16 and in the edge area facting the workpiece face 12 forms the cutting edge 8. In the edge area, the cutting edge 8 is provided with a chamfer 48.
Fig. 7 shows the surface milling cutter 38 with cutting inserts 2 distributed over its circumference. The individual cutting inserts 2 are mounted in pocket-like recesses of the tool base body 30. Alternatively, the cutting inserts 2 can also be mounted in cassettes which are provided for that purpose and fastened on the tool base body 30.
The cutting-insert support faces 20 as well as the bearing face 18 of the individual cutting inserts 2 are clamped against corresponding counter-bearing faces of the tool base body 30. The latter is provided with a recess, not recognizable here, for receiving the protruding element 34. The protruding element 34 lies in this recess with perfect positive fit, so that a positive locking acting in radial direction 42 is given. The direction of rotation 50 of the surface milling cutter 38 during milling is indicated by an arrow. The tool base body 30 preferably consists of light metal.
The cutting insert 2 described here is characterized by a very efficient and reliable chip flow, in particular during high-speed milling of light-metal workpieces. The chip-breaker face 26 running out towards the machining surface 36 at an acute angle provides a safe chip deflection and a defined chip control, thus avoiding damage to both the milling tool 38 and the workpiece to be machined. The specific chip guidance is further supported by the design of the chip-breaker face 26 and the radial chip-flute wall 24, which are inclined to each other, so that the chip is guided into the chip flute and then deflected in Z-direction away from the workpiece surface to be machined.
Claims (37)
1. A cutting bit for a tool, in particular for a milling tool, with a cutting insert including - a workpiece face defining a machining surface defined by a radial direction and a cutting direction, - an end face, adjacent to the workpiece face, defined by the cutting direction and an axial direction, - a cutting edge for metal-cutting machining of a workpiece, arranged in a front comer area, viewed in a cuffing direction, which is formed by the workpiece face and the end face, - a chip-breaker comprising a chip-breaker face, extending in cutting direction beyond the cutting edge and at a distance from the latter in radial direction, wherein the chip-breaker face is oriented towards the cutting edge and is disposed at an acute angle a with respect to each of a back surface of said chip-breaker and said machining surface.
2. The cutting bit according to claim 1, wherein the acute angle a lies in the range of approx. 30° to 60°.
3. The cutting bit according to claim 2, wherein the acute angle is approx. 45°.
4. The cutting bit according to any one of claims 1 to 3, wherein the cutting insert includes a chip flute with a chip-flute wall oriented in cutting direction and comprising the chip-breaker face.
5. The cutting bit according to any one of claims 1 to 4, wherein the chip-breaker face is arranged with an inclination towards the cutting direction at an angle of inclination.
6. The cutting bit according to any one of claims 1 to 5, wherein the chip-breaker face is curved and forms approximately a quarter circle.
7. The cutting bit according to any one of claims 4 to 6, wherein the chip flute includes a chip-flute wall, which extends approximately in radial direction and is arranged at an inclination towards the end face, at a radial angle of inclination to the radial direction, so that between the chip-flute wall and the end face an angle of < 90° is formed.
8. The cutting bit according to any one of claims 1 to 7, wherein the cutting insert includes a cutting-insert support face, extending in radial direction, for location at the tool, from which a protruding element projects.
9. The cutting bit according to any one of claims 1 to 8, wherein the cutting insert consists of a base body and a cutting element fastened on it, which includes the cutting edge.
10. The cutting bit according to claim 9, wherein the cutting element consists of a diamond cutting material or a boron nitride cutting material.
11. The cutting bit according to claim 9 or 10, wherein the base body is a sintered base body.
12. The cutting bit according to claim 11, wherein the sintered base body is made of a metal powder.
13. The cutting bit according to claim 12, wherein the basic material of the sintered base body is iron with admixtures of nickel and copper.
14. The cutting bit according to claim 3, wherein the sintered base body is composed of nickel in the range of approx. 3.5 - 4.5% in weight, of copper in the range of approx. 1.2 - 1.8% in weight, of molybdenum in the range of approx.
0.4 -0.6% in weight, the remainder being iron.
0.4 -0.6% in weight, the remainder being iron.
15. The cutting bit according to any one of claims 1 to 14, wherein it is provided at least in the area of the chip-breaker face with a sliding layer or a hard-material coating.
16. A milling tool, with several cutting bits according to any one of claims 1 to 15.
17. A surface milling cutter comprising the milling tool of claim 16.
18. A face milling cutter for cutting aluminum, said face milling cutter comprising:
a rotary tool body comprising one of: aluminum and an aluminum alloy;
said tool body comprising a shank end and a cutting end;
said shank end being configured to be connected to a tool holder to permit rotation of said tool body about a central rotational axis, and radial and axial movement of said tool body with respect to the central rotational axis, in a cutting process;
said cutting end having an end face being configured to face toward a machining surface of a workpiece to be cut during a cutting process;
said cutting end comprising a plurality of receiving pockets disposed about the periphery thereof;
a plurality of cutting inserts;
each of said plurality of cutting inserts being.disposed in a corresponding one of said plurality of receiving pockets;
each of said cutting inserts comprising a through hole;
a plurality of fastening screws;
each of said fastening screws being disposed to pass through a corresponding one of said through holes to fasten said cutting inserts to said tool body;
each of said cutting inserts further comprising:
a workpiece face being disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process;
an end face being disposed adjacent and substantially perpendicular to said workpiece face, and to face radially outward and away from the central rotational axis of said tool body;
said end face being configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
a front face being disposed substantially transverse to each of said workpiece face and said end face, and to extend along a substantially radial direction away from the central rotational axis of said tool body;
said front face being configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face;
a chip-breaker wedge being disposed to project out of and away from said front face substantially in the direction of rotation said rotary tool body;
said cutting edge being disposed radially further from said central rotational axis of said tool body than said chip-breaker wedge;
said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface;
said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of aluminum chips produced during cutting of an aluminum workpiece away from both the workpiece and said tool body to minimize damage to the workpiece and said tool body caused by the chips.
a rotary tool body comprising one of: aluminum and an aluminum alloy;
said tool body comprising a shank end and a cutting end;
said shank end being configured to be connected to a tool holder to permit rotation of said tool body about a central rotational axis, and radial and axial movement of said tool body with respect to the central rotational axis, in a cutting process;
said cutting end having an end face being configured to face toward a machining surface of a workpiece to be cut during a cutting process;
said cutting end comprising a plurality of receiving pockets disposed about the periphery thereof;
a plurality of cutting inserts;
each of said plurality of cutting inserts being.disposed in a corresponding one of said plurality of receiving pockets;
each of said cutting inserts comprising a through hole;
a plurality of fastening screws;
each of said fastening screws being disposed to pass through a corresponding one of said through holes to fasten said cutting inserts to said tool body;
each of said cutting inserts further comprising:
a workpiece face being disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process;
an end face being disposed adjacent and substantially perpendicular to said workpiece face, and to face radially outward and away from the central rotational axis of said tool body;
said end face being configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
a front face being disposed substantially transverse to each of said workpiece face and said end face, and to extend along a substantially radial direction away from the central rotational axis of said tool body;
said front face being configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face;
a chip-breaker wedge being disposed to project out of and away from said front face substantially in the direction of rotation said rotary tool body;
said cutting edge being disposed radially further from said central rotational axis of said tool body than said chip-breaker wedge;
said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface;
said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of aluminum chips produced during cutting of an aluminum workpiece away from both the workpiece and said tool body to minimize damage to the workpiece and said tool body caused by the chips.
19. The face milling cutter according to claim 18, wherein the acute angle is approximately 45°.
20. The face milling cutter according to claim 19, wherein:
the cutting insert includes a chip flute with a chip-flute wall oriented in a cutting direction and comprising the chip-breaker surface;
the chip-breaker surface is arranged with an inclination towards the cutting direction at an angle of inclination;
the chip-breaker surface is curved and forms approximately a quarter circle;
the chip flute includes a chip-flute wall, which extends approximately in radial direction and is arranged at an inclination towards the end face, at a radial angle of inclination to the radial direction, so that between the chip-flute wall and the end face an angle of < 90° is formed;
the cutting insert includes a cutting-insert support face, extending in radial direction, for location at the tool, from which a protruding element projects;
and the cutting insert comprises a base body and a cutting element fastened on it, which includes the cutting edge.
the cutting insert includes a chip flute with a chip-flute wall oriented in a cutting direction and comprising the chip-breaker surface;
the chip-breaker surface is arranged with an inclination towards the cutting direction at an angle of inclination;
the chip-breaker surface is curved and forms approximately a quarter circle;
the chip flute includes a chip-flute wall, which extends approximately in radial direction and is arranged at an inclination towards the end face, at a radial angle of inclination to the radial direction, so that between the chip-flute wall and the end face an angle of < 90° is formed;
the cutting insert includes a cutting-insert support face, extending in radial direction, for location at the tool, from which a protruding element projects;
and the cutting insert comprises a base body and a cutting element fastened on it, which includes the cutting edge.
21. The face milling cutter according to claim 20, wherein:
the cutting element comprises a diamond cutting material or a boron nitride cutting material;
the base body is a sintered base body;
the sintered base body is made of a metal powder;
the basic material of the sintered base body is iron with admixtures of nickel and copper;
the sintered base body is composed of nickel in the range of approximately 3.5 - 4.5% in weight, of copper in the range of approximately 1.2 - 1.8% in weight, of molybdenum in the range of approximately 0.4 - 0.6%
in weight, the remainder being iron; and the cutting insert is provided at least in the area of the chip-breaker surface with a sliding layer or a hard-material coating.
the cutting element comprises a diamond cutting material or a boron nitride cutting material;
the base body is a sintered base body;
the sintered base body is made of a metal powder;
the basic material of the sintered base body is iron with admixtures of nickel and copper;
the sintered base body is composed of nickel in the range of approximately 3.5 - 4.5% in weight, of copper in the range of approximately 1.2 - 1.8% in weight, of molybdenum in the range of approximately 0.4 - 0.6%
in weight, the remainder being iron; and the cutting insert is provided at least in the area of the chip-breaker surface with a sliding layer or a hard-material coating.
22. A milling cutter for cutting light metals, said milling cutter comprising:
a rotary tool body comprising a light metal;
said tool body comprising a shank end and a cutting end;
said shank end being configured to be connected to a tool holder to permit rotation of said tool body about a central rotational axis, and radial and axial movement of said tool body with respect to the central rotational axis, in a cutting process;
said cutting end having an end face being configured to face toward a machining surface of a workpiece to be cut during a cutting process;
said cutting end comprising a plurality of receiving pockets disposed about the periphery thereof;
a plurality of cutting inserts;
each of said plurality of cutting inserts being disposed in a corresponding one of said plurality of receiving pockets; and each of said cutting inserts further comprising:
a workpiece face being disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process;
an end face being disposed adjacent and substantially perpendicular to said workpiece face;
a front face being disposed substantially transverse to each of said workpiece face and said end face;
a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face;
a chip-breaker wedge being disposed to project out of and away from said front face;
said cutting edge being disposed radially further from said central rotational axis of said tool body than said chip-breaker wedge;
said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface;
said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process;
said back surface being connected to and disposed to extend from said workpiece face;
said chip-breaker surface being disposed to face substantially toward said corner area;
said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of chips produced during cutting of a workpiece away from both the workpiece and said tool body in which said cutting inserts are mounted to minimize damage to the workpiece and said tool body caused by the chips.
a rotary tool body comprising a light metal;
said tool body comprising a shank end and a cutting end;
said shank end being configured to be connected to a tool holder to permit rotation of said tool body about a central rotational axis, and radial and axial movement of said tool body with respect to the central rotational axis, in a cutting process;
said cutting end having an end face being configured to face toward a machining surface of a workpiece to be cut during a cutting process;
said cutting end comprising a plurality of receiving pockets disposed about the periphery thereof;
a plurality of cutting inserts;
each of said plurality of cutting inserts being disposed in a corresponding one of said plurality of receiving pockets; and each of said cutting inserts further comprising:
a workpiece face being disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process;
an end face being disposed adjacent and substantially perpendicular to said workpiece face;
a front face being disposed substantially transverse to each of said workpiece face and said end face;
a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face;
a chip-breaker wedge being disposed to project out of and away from said front face;
said cutting edge being disposed radially further from said central rotational axis of said tool body than said chip-breaker wedge;
said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface;
said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process;
said back surface being connected to and disposed to extend from said workpiece face;
said chip-breaker surface being disposed to face substantially toward said corner area;
said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of chips produced during cutting of a workpiece away from both the workpiece and said tool body in which said cutting inserts are mounted to minimize damage to the workpiece and said tool body caused by the chips.
23. The milling cutter according to claim 22, wherein the acute angle lies in the range of approximately 30° to 60°.
24. The milling cutter according to claim 23, wherein the acute angle is approximately 45°.
25. The milling cutter according to claim 24, wherein:
the cutting insert includes a chip flute with a chip-flute wall oriented in a cutting direction and comprising the chip-breaker surface; and the chip-breaker surface is arranged with an inclination towards the cutting direction at an angle of inclination.
the cutting insert includes a chip flute with a chip-flute wall oriented in a cutting direction and comprising the chip-breaker surface; and the chip-breaker surface is arranged with an inclination towards the cutting direction at an angle of inclination.
26. The milling cutter according to claim 25, wherein:
the chip-breaker surface is curved and forms approximately a quarter circle;
the chip flute includes a chip-flute wall, which extends approximately in radial direction and is arranged at an inclination towards the end face, at a radial angle of inclination to the radial direction, so that between the chip-flute wall and the end face an angle of < 90° is formed;
the cutting insert includes a cutting-insert support face, extending in radial direction, for location at the tool, from which a protruding element projects;
and the cutting insert comprises a base body and a cutting element fastened on it, which includes the cutting edge.
the chip-breaker surface is curved and forms approximately a quarter circle;
the chip flute includes a chip-flute wall, which extends approximately in radial direction and is arranged at an inclination towards the end face, at a radial angle of inclination to the radial direction, so that between the chip-flute wall and the end face an angle of < 90° is formed;
the cutting insert includes a cutting-insert support face, extending in radial direction, for location at the tool, from which a protruding element projects;
and the cutting insert comprises a base body and a cutting element fastened on it, which includes the cutting edge.
27. The milling cutter according to claim 26, wherein:
the cutting element comprises a diamond cutting material or a boron nitride cutting material;
the base body is a sintered base body;
the sintered base body is made of a metal powder;
the basic material of the sintered base body is iron with admixtures of nickel and copper;
the sintered base body is composed of nickel in the range of approximately 3.5 - 4.5% in weight, of copper in the range of approximately 1.2 - 1.8% in weight, of molybdenum in the range of approximately 0.4 - 0.6%
in weight, the remainder being iron; and the cutting insert is provided at least in the area of the chip-breaker surface with a sliding layer or a hard-material coating.
the cutting element comprises a diamond cutting material or a boron nitride cutting material;
the base body is a sintered base body;
the sintered base body is made of a metal powder;
the basic material of the sintered base body is iron with admixtures of nickel and copper;
the sintered base body is composed of nickel in the range of approximately 3.5 - 4.5% in weight, of copper in the range of approximately 1.2 - 1.8% in weight, of molybdenum in the range of approximately 0.4 - 0.6%
in weight, the remainder being iron; and the cutting insert is provided at least in the area of the chip-breaker surface with a sliding layer or a hard-material coating.
28. The milling cutter according to claim 22, wherein:
said end face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said front face is disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said front face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker wedge is disposed to project substantially in the direction of rotation of said rotary tool body; and said chip-breaker surface is disposed substantially transverse and at an acute angle to said workpiece face.
said end face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said front face is disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said front face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker wedge is disposed to project substantially in the direction of rotation of said rotary tool body; and said chip-breaker surface is disposed substantially transverse and at an acute angle to said workpiece face.
29. A cutting insert for a milling cutter comprising:
a workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process;
an end face being disposed adjacent and substantially perpendicular to said workpiece face;
a front face being disposed substantially transverse to each of said workpiece face and said end face;
a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face;
a chip-breaker wedge being disposed to project out of and away from said front face;
said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface;
said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process;
said back surface being connected to and disposed to extend from said workpiece face;
said chip-breaker surface being disposed to face substantially toward said corner area;
said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of chips produced during cutting of a workpiece away from both the workpiece and a tool body in which said cutting inserts are mounted to minimize damage to the workpiece and the tool body caused by the chips.
a workpiece face being configured and disposed to face toward a machining surface of a workpiece to be cut during a cutting process;
an end face being disposed adjacent and substantially perpendicular to said workpiece face;
a front face being disposed substantially transverse to each of said workpiece face and said end face;
a cutting edge being disposed at a corner area formed at the intersection of said workpiece face, said end face, and said front face;
a chip-breaker wedge being disposed to project out of and away from said front face;
said chip-breaker wedge comprising a chip-breaker surface and a back surface disposed at an acute angle with respect to said chip-breaker surface;
said back surface being configured and disposed to face a machining surface of a workpiece to be cut during a cutting process;
said back surface being connected to and disposed to extend from said workpiece face;
said chip-breaker surface being disposed to face substantially toward said corner area;
said chip-breaker surface being configured and disposed to face away from a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker surface being configured and disposed to be disposed at an acute angle to a machining surface of a workpiece to be cut during a cutting process; and said chip-breaker surface being configured and disposed to guide a substantial number of chips produced during cutting of a workpiece away from both the workpiece and a tool body in which said cutting inserts are mounted to minimize damage to the workpiece and the tool body caused by the chips.
30. The cutting insert according to claim 29, wherein the acute angle lies in the range of approximately 30° to 60°.
31. The cutting insert according to claim 30, wherein the acute angle is approximately 45°.
32. The cutting insert according to claim 31, wherein:
the cutting insert includes a chip flute with a chip-flute wall oriented in a cutting direction and comprising the chip-breaker surface; and the chip-breaker surface is arranged with an inclination towards the cutting direction at an angle of inclination.
the cutting insert includes a chip flute with a chip-flute wall oriented in a cutting direction and comprising the chip-breaker surface; and the chip-breaker surface is arranged with an inclination towards the cutting direction at an angle of inclination.
33. The cutting insert according to claim 32, wherein:
the chip-breaker surface is curved and forms approximately a quarter circle;
the chip flute includes a chip-flute wall, which extends approximately in radial direction and is arranged at an inclination towards the end face, at a radial angle of inclination to the radial direction, so that between the chip-flute wall and the end face an angle of < 90° is formed;
the cutting insert includes a cutting-insert support face, extending in radial direction, for location at the tool, from which a protruding element projects;
and the cutting insert comprises a base body and a cutting element fastened on it, which includes the cutting edge.
the chip-breaker surface is curved and forms approximately a quarter circle;
the chip flute includes a chip-flute wall, which extends approximately in radial direction and is arranged at an inclination towards the end face, at a radial angle of inclination to the radial direction, so that between the chip-flute wall and the end face an angle of < 90° is formed;
the cutting insert includes a cutting-insert support face, extending in radial direction, for location at the tool, from which a protruding element projects;
and the cutting insert comprises a base body and a cutting element fastened on it, which includes the cutting edge.
34. The cutting insert according to claim 33, wherein:
the cutting element comprises a diamond cutting material or a boron nitride cutting material;
the base body is a sintered base body; and the sintered base body is made of a metal powder.
the cutting element comprises a diamond cutting material or a boron nitride cutting material;
the base body is a sintered base body; and the sintered base body is made of a metal powder.
35. The cutting insert according to claim 34, wherein:
the basic material of the sintered base body is iron with admixtures of nickel and copper;
the sintered base body is composed of nickel in the range of approximately 3.5 - 4.5% in weight, of copper in the range of approximately 1.2 - 1.8% in weight, of molybdenum in the range of approximately 0.4 - 0.6%
in weight, the remainder being iron; and the cutting insert is provided at least in the area of the chip-breaker surface with a sliding layer or a hard-material coating.
the basic material of the sintered base body is iron with admixtures of nickel and copper;
the sintered base body is composed of nickel in the range of approximately 3.5 - 4.5% in weight, of copper in the range of approximately 1.2 - 1.8% in weight, of molybdenum in the range of approximately 0.4 - 0.6%
in weight, the remainder being iron; and the cutting insert is provided at least in the area of the chip-breaker surface with a sliding layer or a hard-material coating.
36. The cutting insert according to claim 35, wherein:
said end face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said front face is disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said front face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker wedge is disposed to project substantially in the direction of rotation said rotary tool body; and said chip-breaker surface is disposed substantially transverse and at an acute angle to said workpiece face.
said end face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said front face is disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said front face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker wedge is disposed to project substantially in the direction of rotation said rotary tool body; and said chip-breaker surface is disposed substantially transverse and at an acute angle to said workpiece face.
37. The cutting insert according to claim 29, wherein:
said end face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said front face is disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said front face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker wedge is disposed to project substantially in the direction of rotation said rotary tool body; and said chip-breaker surface is disposed substantially transverse and at an acute angle to said workpiece face.
said end face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said front face is disposed to extend along a substantially radial direction away from the central rotational axis of said tool body;
said front face is configured and disposed to be disposed substantially transverse to a machining surface of a workpiece to be cut during a cutting process;
said chip-breaker wedge is disposed to project substantially in the direction of rotation said rotary tool body; and said chip-breaker surface is disposed substantially transverse and at an acute angle to said workpiece face.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005023532A DE102005023532A1 (en) | 2005-05-21 | 2005-05-21 | Cutting insert for a tool, in particular for a milling tool |
| DE102005023532.8-14 | 2005-05-21 | ||
| PCT/EP2006/004048 WO2006125508A1 (en) | 2005-05-21 | 2006-04-29 | Cutting insert for a tool in particular a milling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2601783A1 CA2601783A1 (en) | 2006-11-30 |
| CA2601783C true CA2601783C (en) | 2011-03-15 |
Family
ID=36685741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2601783A Expired - Fee Related CA2601783C (en) | 2005-05-21 | 2006-04-29 | Cutting bit for a tool, in particular for a milling tool |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP1883487B1 (en) |
| JP (1) | JP4969570B2 (en) |
| KR (1) | KR20080000552A (en) |
| CN (1) | CN100496835C (en) |
| BR (1) | BRPI0606296A2 (en) |
| CA (1) | CA2601783C (en) |
| DE (2) | DE102005023532A1 (en) |
| MX (1) | MX2007006088A (en) |
| RU (1) | RU2395374C2 (en) |
| WO (1) | WO2006125508A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007019933A1 (en) * | 2007-04-27 | 2008-10-30 | Kennametal Inc. | Blade holder with soldered cutting body and milling cutter head |
| US9079260B2 (en) * | 2007-11-01 | 2015-07-14 | GM Global Technology Operations LLC | Polycrystalline diamond cutting tool with coated body |
| BRPI0821062A2 (en) | 2007-12-06 | 2015-06-16 | Mapal Fabrik Für Prazisionswerkzeuge Dr Kress Kg | Tool for chip removal machining of workpieces |
| DE102008064631B4 (en) | 2008-03-26 | 2012-03-08 | Audi Ag | milling tool |
| DE102008015603B4 (en) | 2008-03-26 | 2011-05-12 | Audi Ag | milling tool |
| US8740507B2 (en) | 2008-03-26 | 2014-06-03 | Audi Ag | Milling tool, particularly face-milling cutter |
| SE0950096A1 (en) * | 2009-02-20 | 2010-07-06 | Seco Tools Ab | Control arrangement for a cutting tool and cutting tool which includes a control arrangement |
| CN101890528B (en) * | 2010-06-25 | 2012-04-25 | 成都工研科技股份有限公司 | Disc-shaped cutting tool |
| CN103192103B (en) * | 2013-04-22 | 2015-07-22 | 无锡蠡湖叶轮制造有限公司 | Chip-breakable groove cutter |
| JP6434534B2 (en) * | 2014-12-17 | 2018-12-05 | 京セラ株式会社 | Cutting insert, cutting tool, and manufacturing method of cut workpiece |
| DE102016116466B4 (en) | 2016-09-02 | 2021-12-30 | Audi Ag | Chip guide cover for cutting tool |
| CN109414772B (en) | 2017-03-24 | 2021-04-30 | 住友电工硬质合金株式会社 | Milling tool |
| CN107139343B (en) * | 2017-06-21 | 2019-02-15 | 哈尔滨理工大学 | A kind of milling method of wave ceramic antenna window |
| DE102017114391A1 (en) | 2017-06-28 | 2019-01-03 | Gühring KG | cutting tool |
| EP3593929B1 (en) * | 2018-05-15 | 2023-03-01 | Sumitomo Electric Hardmetal Corp. | Cutting insert and milling tool |
| CN109202060A (en) * | 2018-08-24 | 2019-01-15 | 长沙市萨普新材料有限公司 | Sintered diamond tool and application thereof and preparation method |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH501464A (en) * | 1969-06-03 | 1971-01-15 | Bbc Brown Boveri & Cie | Device for deforming and breaking chips from cutting tools and their use |
| JPS60127913A (en) * | 1983-12-14 | 1985-07-08 | Hitachi Ltd | L-shaped throw away tip |
| US4854784A (en) * | 1988-10-19 | 1989-08-08 | Kennametal Inc. | Diamond tipped chip control insert |
| JPH0760512A (en) * | 1993-08-25 | 1995-03-07 | Mitsubishi Materials Corp | Throwaway tip |
| US5538367A (en) * | 1993-10-22 | 1996-07-23 | Kennametal Inc. | Metal cutting tool assembly having an automatically adjustable chipbreaker |
| US5542795A (en) * | 1995-01-30 | 1996-08-06 | Kennametal Inc. | Plunge and face milling cutter with universal insert seats |
| IL115338A (en) * | 1995-09-18 | 1999-07-14 | Iscar Ltd | Exchangeable cutting insert and a tool assembly for use therewith |
| DE19716818C2 (en) * | 1997-04-22 | 2002-07-04 | Mapal Fab Praezision | milling cutter |
| AU7356698A (en) * | 1997-05-09 | 1998-12-08 | Xiaoping Li | Apparatus for breaking chips |
| US6120218A (en) * | 1997-08-29 | 2000-09-19 | Bishop; Todd | Planing tool |
| US5944456A (en) * | 1997-12-04 | 1999-08-31 | Kennametal Inc. | Three dimensional mill and milling inserts |
| JP2000024807A (en) * | 1998-07-15 | 2000-01-25 | Mitsubishi Heavy Ind Ltd | Chip breaker for rotary cutting tool |
| SE514032C2 (en) * | 1998-09-08 | 2000-12-11 | Seco Tools Ab | Tools and cutters for milling |
| DE29901414U1 (en) * | 1999-01-28 | 1999-08-26 | Hartmetallwerkzeugfabrik Andreas Maier GmbH, 88477 Schwendi | Cutting tool |
| DE10142049A1 (en) * | 2001-08-28 | 2003-03-20 | Kennametal Inc | Cutting insert and its use |
| DE10343673B4 (en) * | 2003-09-18 | 2010-01-14 | Gühring Ohg | Tool for milling |
-
2005
- 2005-05-21 DE DE102005023532A patent/DE102005023532A1/en not_active Withdrawn
-
2006
- 2006-04-29 KR KR1020077004654A patent/KR20080000552A/en not_active Application Discontinuation
- 2006-04-29 RU RU2007147659/02A patent/RU2395374C2/en not_active IP Right Cessation
- 2006-04-29 MX MX2007006088A patent/MX2007006088A/en active IP Right Grant
- 2006-04-29 BR BRPI0606296-2A patent/BRPI0606296A2/en not_active IP Right Cessation
- 2006-04-29 CN CNB2006800009279A patent/CN100496835C/en not_active Expired - Fee Related
- 2006-04-29 WO PCT/EP2006/004048 patent/WO2006125508A1/en active Application Filing
- 2006-04-29 CA CA2601783A patent/CA2601783C/en not_active Expired - Fee Related
- 2006-04-29 EP EP06724661A patent/EP1883487B1/en not_active Not-in-force
- 2006-04-29 DE DE502006007922T patent/DE502006007922D1/en active Active
- 2006-04-29 JP JP2008511585A patent/JP4969570B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE502006007922D1 (en) | 2010-11-04 |
| WO2006125508A1 (en) | 2006-11-30 |
| DE102005023532A1 (en) | 2006-11-23 |
| CN101031377A (en) | 2007-09-05 |
| CA2601783A1 (en) | 2006-11-30 |
| JP4969570B2 (en) | 2012-07-04 |
| CN100496835C (en) | 2009-06-10 |
| EP1883487A1 (en) | 2008-02-06 |
| EP1883487B1 (en) | 2010-09-22 |
| JP2008540147A (en) | 2008-11-20 |
| RU2395374C2 (en) | 2010-07-27 |
| RU2007147659A (en) | 2009-06-27 |
| MX2007006088A (en) | 2007-07-11 |
| BRPI0606296A2 (en) | 2009-06-09 |
| KR20080000552A (en) | 2008-01-02 |
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Legal Events
| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed |