Patents by Inventor Ingemar Hessman
Ingemar Hessman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7578638Abstract: A cutting tool including a basic body and a plurality of cutting inserts arranged in series one after the other. Each insert includes a topside, an underside, two opposite side surfaces, front and rear ends, and a cutting edge adjacent to the front end. The rear end of a first cutting insert faces the front end of a second cutting insert disposed rearward of the first insert, and a chip space forward of the cutting edge of the second cutting insert is delimited by a chip-forming surface extending in the forward direction from the rear end of the first cutting insert, and a chip-forming surface extending downward from the cutting edge of the second cutting insert.Type: GrantFiled: July 6, 2007Date of Patent: August 25, 2009Assignee: Sandvik Intellectual Property ABInventors: Ingemar Hessman, Åke Johansson
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Patent number: 7547164Abstract: A face-milling insert, including a chip-removing main cutting edge adjacent to a first clearance surface, and a surface-wiping secondary edge adjacent to a second clearance surface, the main cutting edge forming an angle of 45° with an imaginary straight line in the extension of the secondary edge. Adjacent to a third clearance surface, an intermediate cutting edge is formed between the main cutting edge and the secondary edge, the intermediate cutting edge being shorter than the main cutting edge and forming an angle within a range of 20-40° with the extension line. The intermediate cutting edge transforms into the adjacent edges via arched part edges adjacent to convex clearance surfaces.Type: GrantFiled: May 18, 2007Date of Patent: June 16, 2009Assignee: Sandvik Intellectual Property ABInventor: Ingemar Hessman
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Patent number: 7431542Abstract: A cutting insert preferably for milling of extremely highly alloyed grey cast iron, of a substrate and a coating and methods of making and using the insert are disclosed. The cemented carbide substrate includes WC, of from about 3 to about 8 weight-% Co and less than about 0.5 weight-% carbides of metals from groups IVb, Vb or VIb of the periodic table. The coating has a first, innermost layer of TiCxNyOz with x+y+z=1, y>x and z less than about 0.2, preferably y greater than about 0.8, and z=0, with equiaxed grains with size less than about 0.5 ?m and a total thickness of from about 0.1 to about 1.5 ?m, a layer of TiCxNy with x+y=1, x greater than about 0.3 and y greater than about 0.3, preferably x greater than or equal to about 0.5, with a thickness of greater than about 3 to about 5 ?m with columnar grains with an average diameter of less than about 5 ?m, a layer of a smooth, fine-grained, grain size of from about 0.5 to about 2 ?m, ?-Al2O3 with a thickness of from about 0.Type: GrantFiled: October 31, 2005Date of Patent: October 7, 2008Assignee: Sandvik Intellectual Property ABInventor: Ingemar Hessman
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Patent number: 7431977Abstract: Coated milling inserts particularly useful for milling of grey cast iron with or without cast skin under dry conditions at generally high cutting speeds and milling of nodular cast iron and compacted graphite iron with or without cast skin under dry conditions at rather high cutting speeds are disclosed. The inserts are characterised by a WC—Co cemented carbide with a low content of cubic carbides and a highly W-alloyed binder phase and a coating including an inner layer of TiCxNy with columnar grains followed by a wet blasted layer of ?-Al2O3.Type: GrantFiled: October 31, 2005Date of Patent: October 7, 2008Assignee: Sandvik Intellectual Property ABInventor: Ingemar Hessman
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Patent number: 7429151Abstract: Coated milling inserts particularly useful for milling of highly alloyed grey cast iron with or without cast skin under wet conditions at preferably rather high cutting speeds and milling of nodular cast iron and compacted graphite iron with or without cast skin under wet conditions at moderate cutting speeds are disclosed. The inserts are characterised by a WC—Co cemented carbide with a low content of cubic carbides and a highly W-alloyed binder phase and a coating including an inner layer of TiCxNy with columnar grains followed by a layer of ?-Al2O3 and a top layer of TiN.Type: GrantFiled: October 31, 2005Date of Patent: September 30, 2008Assignee: Sandvik Intellectual Property ABInventor: Ingemar Hessman
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Patent number: 7422805Abstract: Coated cemented carbide cutting tool inserts for bimetal machining under wet conditions at moderate cutting speeds, and in particular, cutting tool inserts for face milling of engine blocks formed from alloys of cast iron and aluminium and/or magnesium. The inserts are characterized by a submicron WC—Co cemented carbide and a coating including an inner layer of TiCxNy with columnar grains followed by a layer of ?-Al2O3 and a top layer of TiN.Type: GrantFiled: February 15, 2005Date of Patent: September 9, 2008Assignee: Sandvik Intellectual Property AktiebolagInventor: Ingemar Hessman
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Publication number: 20080131725Abstract: The present invention discloses coated inserts particularly useful for milling of compacted graphite iron under wet conditions at moderate cutting speeds comprising a cemented carbide body and a coating. The cemented carbide body comprises WC, from about 7.3 to about 7.9 wt-% Co and from about 1.0 to about 1.8 wt-% cubic carbides of Ta and Nb and a highly W-alloyed binder phase. The radius of the uncoated cutting edge is from about 25 to about 45 ?m. The coating comprises: a first, less than about 1 ?m, TiCxNyOz layer adjacent to the cemented carbide having a composition of x+y=1, x is greater than or equal to 0; a second, from about 1 to about 2 ?m, TiCxNyOz layer having a composition of x greater than about 0.4, y greater than about 0.4 and z is less than about 0.1 and equal to or greater than zero; a third, less than about 1 ?m, TiCxNyOz layer having a composition of x+y+z greater than or equal to about 1 and z greater than about 0; an ?-Al2O3-layer with a thickness of from about 2.1 to about 3.Type: ApplicationFiled: November 16, 2007Publication date: June 5, 2008Inventors: Emmanuel David, Ingemar Hessman
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Publication number: 20080063481Abstract: A cutting tool including a basic body and a plurality of cutting inserts arranged in series one after the other. Each insert includes a topside, an underside, two opposite side surfaces, front and rear ends, and a cutting edge adjacent to the front end. The rear end of a first cutting insert faces the front end of a second cutting insert disposed rearward of the first insert, and a chip space forward of the cutting edge of the second cutting insert is delimited by a chip-forming surface extending in the forward direction from the rear end of the first cutting insert, and a chip-forming surface extending downward from the cutting edge of the second cutting insert.Type: ApplicationFiled: July 6, 2007Publication date: March 13, 2008Inventors: Ingemar Hessman, Ake Johansson
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Publication number: 20070297865Abstract: A face-milling insert, including a chip-removing main cutting edge adjacent to a first clearance surface, and a surface-wiping secondary edge adjacent to a second clearance surface, the main cutting edge forming an angle of 45° with an imaginary straight line in the extension of the secondary edge. Adjacent to a third clearance surface, an intermediate cutting edge is formed between the main cutting edge and the secondary edge, the intermediate cutting edge being shorter than the main cutting edge and forming an angle within a range of 20-40° with the extension line. The intermediate cutting edge transforms into the adjacent edges via arched part edges adjacent to convex clearance surfaces.Type: ApplicationFiled: May 18, 2007Publication date: December 27, 2007Inventor: Ingemar Hessman
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Publication number: 20070283554Abstract: The present invention relates to a cutting tool insert for side and face milling of rolled low alloyed steel at low and at moderate cutting speeds comprising a cemented carbide body and a coating and a method for making same. The cemented carbide body comprises WC, from about 7.3 to about 7.9 wt-% Co and from about 1.0 to about 1.8 wt-% cubic carbides of Ta and Nb and a highly W-alloyed binder phase with a CW-ratio of from about 0.86 to about 0.94. The coating comprises: a first (innermost) layer of TiCxNyOz with a thickness of from about 0.1 to about 2 ?m, and with equiaxed grains with size less than about 0.5 ?m a layer of TiCxNyOz with a thickness of from about 2 to about 10 ?m with columnar grains with a diameter of about less than about 5 ?m a layer of TiCxNyOz with a thickness of 0.1-2 ?m and with equiaxed or needlelike grains with size less than about 0.5 ?m an outer layer of a smooth, textured, finegrained ?-Al2O3 layer with a thickness of from about 2 to about 10 ?m.Type: ApplicationFiled: May 4, 2007Publication date: December 13, 2007Inventor: Ingemar Hessman
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Publication number: 20070160844Abstract: The present invention discloses a cutting tool insert particularly for deep hole drilling comprising a cemented carbide body and a coating. The cemented carbide body is WC, from about 8 to about 11 wt-% Co and from about 0.1 to about 0.5 wt-% Cr with an HcJ-value of from about 18 to about 22 kA/m and with a CW-value of from about 0.78 to about 0.90. The coating comprises a first, innermost layer of TiCxNyOz with equiaxed grains with size and a total thickness of from about 0.1 to about 1.5 ?m, a layer of TiCxNy with a thickness of from about 2 to about 3 ?m with columnar grains, a layer of a smooth, fine-grained ?-Al2O3 with a thickness of from about 1 to about 2.5 ?m and an outer layer of TiN with a thickness of from about 0.5 to about 1.0 ?m, where the outermost layer of TiN is missing along the cutting edge.Type: ApplicationFiled: December 18, 2006Publication date: July 12, 2007Inventor: Ingemar Hessman
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Patent number: 7232603Abstract: The present invention relates to a cutting tool insert for side and face milling of rolled low alloyed steel at low and at moderate cutting speeds comprising a cemented carbide body and a coating and a method for making same. The cemented carbide body comprises WC, from about 7.3 to about 7.9 wt-% Co and from about 1.0 to about 1.8 wt-% cubic carbides of Ta and Nb and a highly W-alloyed binder phase with a CW-ratio of from about 0.86 to about 0.94. The coating comprises: a first (innermost) layer of TiCxNyOz with a thickness of from about 0.1 to about 2 ?m, and with equiaxed grains with size less than about 0.5 ?m a layer of TiCxNyOz with a thickness of from about 2 to about 10 ?m with columnar grains with a diameter of about less than about 5 ?m a layer of TiCxNyOz with a thickness of 0.1-2 ?m and with equiaxed or needlelike grains with size less than about 0.5 ?m an outer layer of a smooth, textured, finegrained ?-Al2O3 layer with a thickness of from about 2 to about 10 ?m.Type: GrantFiled: May 20, 2005Date of Patent: June 19, 2007Assignee: Sandvik Intellectual Property ABInventor: Ingemar Hessman
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Publication number: 20060147755Abstract: A cutting insert preferably for milling of extremely highly alloyed grey cast iron, of a substrate and a coating and methods of making and using the insert are disclosed. The cemented carbide substrate includes WC, of from about 3 to about 8 weight-% Co and less than about 0.5 weight-% carbides of metals from groups IVb, Vb or VIb of the periodic table. The coating has a first, innermost layer of TiCxNyOz with x+y+z=1, y>x and z less than about 0.2, preferably y greater than about 0.8, and z=0, with equiaxed grains with size less than about 0.5 ?m and a total thickness of from about 0.1 to about 1.5 ?m, a layer of TiCxNy with x+y=1, x greater than about 0.3 and y greater than about 0.3, preferably x greater than or equal to about 0.5, with a thickness of greater than about 3 to about 5 ?m with columnar grains with an average diameter of less than about 5 ?m, a layer of a smooth, fine-grained, grain size of from about 0.5 to about 2 ?m, ?-Al2O3 with a thickness of from about 0.Type: ApplicationFiled: October 31, 2005Publication date: July 6, 2006Inventor: Ingemar Hessman
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Patent number: 7063487Abstract: A tool for the fine-turning of grooves in workpieces including a basic body having a rearwardly extending mounting part, and a forwardly projecting bracket. The bracket includes a narrow neck part and an enlarged support part disposed at an end of the neck part. The support part, which forms an insert seat, extends laterally from the neck part wherein the seat is arranged asymmetrically with respect to an imaginary center line of the basic body. A cutting insert includes a bottom side supported on the insert seat. The insert includes two spaced apart convexly arched side cutting edges arranged so that the imaginary center line passes therebetween. A hole is provided through the insert for receiving a fastening screw. The bottom side and the insert seat include mutually engaging stabilizing structures preventing angular displacement of the insert about an axis of the hole.Type: GrantFiled: March 15, 2004Date of Patent: June 20, 2006Assignee: Sandvik Intellectual Property ABInventors: Ingemar Hessman, Kenneth Lundberg, Ove Lund, Carl-Göran Petersson, Anders Wretland
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Publication number: 20060115683Abstract: Coated milling inserts particularly useful for milling of grey cast iron with or without cast skin under dry conditions at generally high cutting speeds and milling of nodular cast iron and compacted graphite iron with or without cast skin under dry conditions at rather high cutting speeds are disclosed. The inserts are characterised by a WC—Co cemented carbide with a low content of cubic carbides and a highly W-alloyed binder phase and a coating including an inner layer of TiCxNy with columnar grains followed by a wet blasted layer of ?-Al2O3.Type: ApplicationFiled: October 31, 2005Publication date: June 1, 2006Inventor: Ingemar Hessman
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Publication number: 20060110532Abstract: Coated milling inserts particularly useful for milling of highly alloyed grey cast iron with or without cast skin under wet conditions at preferably rather high cutting speeds and milling of nodular cast iron and compacted graphite iron with or without cast skin under wet conditions at moderate cutting speeds are disclosed. The inserts are characterised by a WC—Co cemented carbide with a low content of cubic carbides and a highly W-alloyed binder phase and a coating including an inner layer of TiCxNy with columnar grains followed by a layer of ?-Al2O3 and a top layer of TiN.Type: ApplicationFiled: October 31, 2005Publication date: May 25, 2006Inventor: Ingemar Hessman
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Patent number: 7048248Abstract: A method of loading cutting tool inserts in a PVD (Physical Vapor Deposition) coating equipment consists in using a tube manufactured of a non-magnetic metallic material surrounding a stack of alternating discs of a magnetic material and iron. The north poles of the magnets are directed towards each other and the cutting inserts are positioned on the outer wall of the solid tube and kept in place by the magnetic forces.Type: GrantFiled: July 4, 2000Date of Patent: May 23, 2006Assignee: Sandvik Intellectual Property ABInventors: Tor Norrgrann, Ingemar Hessman
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Publication number: 20060078737Abstract: An insert for turning of titanium is provided. By using inserts with a reduced length of primary land compared to prior art an unexpected increase in tool life and productivity has been obtained. Said positive results are further improved by subjecting the inserts to an additional heat treatment after grinding to final shape and dimension.Type: ApplicationFiled: November 21, 2005Publication date: April 13, 2006Inventors: Ingemar Hessman, Bjorn Olsson, Carl-Goran Petersson
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Patent number: RE39912Abstract: Coated milling insert has a WC-Co cemented carbide with a low content of cubic carbides and a highly W-alloyed binder phase and a coating including an inner layer of TiCxNy with columnar grains followed by a layer of ?-Al2O3 and a top layer of TiN. The coated milling insert is particularly useful for milling of grey cast iron with or without cast skin under wet conditions at low and moderate cutting speeds and milling of nodular cast iron and compacted graphite iron with or without cast skin under wet conditions at moderate cutting speeds.Type: GrantFiled: June 9, 2006Date of Patent: November 6, 2007Assignee: Sandvik Intellectual Property ABInventors: Anders Nordgren, Ingemar Hessman, Marian Mikus
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Patent number: RE40082Abstract: Coated milling insert has a WC—Co cemented carbide with a low content of cubic carbides and a highly W-alloyed binder phase and a coating including an inner layer of TiCxNy with columnar grains followed by a layer of ?-Al2O3 and a top layer of TiN. The coated milling insert is particularly useful for milling of grey cast iron with or without cast skin under wet conditions at low and moderate cutting speeds and milling of nodular cast iron and compacted graphite iron with or without cast skin under wet conditions at moderate cutting speeds.Type: GrantFiled: June 8, 2006Date of Patent: February 19, 2008Assignee: Sandvik Intellectual Property ABInventors: Anders Nordgren, Ingemar Hessman, Marian Mikus