Patents by Inventor Padmakumar Muthuswamy
Padmakumar Muthuswamy 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: 11850670Abstract: Cutting tool systems including a cutting tool holder and cutting inserts are disclosed. The cutting inserts have eight cutting edges and eight wiper edges. The first and second faces each include at least two cutting edges or two wiper edges on alternating sides of the cutting insert. The cutting edges and wiper edges are structured and arranged to allow the cutting insert to be interchangeably used in both right handed and left handed cutting tool holders.Type: GrantFiled: April 21, 2021Date of Patent: December 26, 2023Assignee: KENNAMETAL INDIA LTD.Inventors: Padmakumar Muthuswamy, Bharath Arumugam
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Publication number: 20230271258Abstract: A tool is provided having a tool holder and a brazed top clamp positioned in a portion of the tool holder. The brazed top clamp is made of a material that has a hardness that is greater than the material that makes up the tool holder. In certain embodiments, the tool holder has a slot that is in the shape of a “T-slot” and the top clamp is in the shape of a “T shaped rail” that is positioned within the “T-slot” of the tool holder.Type: ApplicationFiled: February 23, 2023Publication date: August 31, 2023Inventors: Santhosha Borapura, Padmakumar Muthuswamy
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Publication number: 20230226626Abstract: A milling tool includes a rotatable tool body, a cutting insert, and first and second coolant outlets. The rotatable tool body is configured to rotate around an axis. The rotatable tool body includes a circumferential outer surface with a pocket defined therein. The pocket includes a seating surface. The cutting insert is disposed within the pocket. The cutting insert includes a seating face and a rake face opposed to the seating face. The seating face is disposed against the seating surface. The first coolant outlet is disposed in or attached to the rotatable tool body disposed on an opposite side of the rake face as the seating face. The second coolant outlet is disposed in or attached to the rotatable tool body disposed on an opposite side of the seating face as the rake face. The second coolant outlet is disposed outside of and adjacent to the seating face.Type: ApplicationFiled: November 22, 2022Publication date: July 20, 2023Inventors: Bharath Arumugam, Padmakumar Muthuswamy
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Publication number: 20230226624Abstract: A milling tool cutter includes a tool body, a plurality of cutting inserts, a plurality of clamping studs, a clamping ring, and a detachable fastening member. The tool body has a plurality of pockets disposed circumferentially around the tool body. Each of the cutting inserts is disposed in one of the respective pockets. Each of the clamping studs is attached to one of the respective cutting inserts. The clamping ring is disposed within the tool body. The clamping ring includes a face surface, a seating surface, and a circumferential outer surface extending between the face surface and the seating surface. The seating surface sits against the plurality of clamping studs. The detachable fastening member is disposed in an attached state fixedly attaching the clamping ring to the tool body causing the clamping studs and their respective cutting inserts to be fixedly attached to the tool body.Type: ApplicationFiled: January 17, 2023Publication date: July 20, 2023Inventors: Bharath Arumugam, Padmakumar Muthuswamy, Ruy Frota de Souza Filho
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Patent number: 11484953Abstract: A toolholder (10) has a pocket (20) that accommodates two styles of cutting inserts (25, 25?) having different clearance angles (CA). A support pad (78, 80) protrudes from two side walls (82, 84) of the pocket (20). Each support pad (78, 80) includes a first, planar wall (78a, 80a) and a second, planar wall (78b, 80b) formed at a composite angle defined by a first angle (92) and a second angle (94). The first, planar wall (78a, 80a) enables the pocket (20) to accommodate the second style of cutting insert (25?), and the second, planar wall (78b, 80b) enables the pocket (20) to accommodate the first style of cutting insert (25). In one aspect, the support pads (78, 80) extend the entire length, L, of the support pad (78, 80). In another aspect, an indentation (112, 114) divides one or both of the support pads (178, 180) into two portions, each portion having two planar walls (178a, 178b, 178c, 178d, 180a, 180b, 180c, 180d).Type: GrantFiled: June 18, 2020Date of Patent: November 1, 2022Assignee: KENNAMETAL INDIA LIMITEDInventors: Bharath Arumugam, Padmakumar Muthuswamy
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Patent number: 11325196Abstract: A double-sided, polygonal cutting insert includes a first surface and a second surface opposite the first surface. A plurality of side surfaces extend between the first surface and the second surface. A plurality of primary concave cutting edges are formed at an intersection between the plurality of side surfaces and the first and second surfaces, and a plurality of convex wiper edges are formed at an intersection between the plurality of side surfaces and the first and second surfaces. Each wiper edge has a step extending radially outward from a respective side surface. The cutting insert is mounted in a cutting tool such that the primary cutting edge and a wiper edge contact a workpiece to produce a high-quality surface finish on the workpiece.Type: GrantFiled: June 29, 2020Date of Patent: May 10, 2022Assignee: KENNAMETAL INDIA LIMITEDInventors: Andreas Wuerfels, Padmakumar Muthuswamy, Bharath Arumugam
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Publication number: 20210331258Abstract: Cutting tool systems including a cutting tool holder and cutting inserts are disclosed. The cutting inserts have eight cutting edges and eight wiper edges. The first and second faces each include at least two cutting edges or two wiper edges on alternating sides of the cutting insert. The cutting edges and wiper edges are structured and arranged to allow the cutting insert to be interchangeably used in both right handed and left handed cutting tool holders.Type: ApplicationFiled: April 21, 2021Publication date: October 28, 2021Inventors: Padmakumar Muthuswamy, Bharath Arumugam
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Publication number: 20210001408Abstract: A double-sided, polygonal cutting insert includes a first surface and a second surface opposite the first surface. A plurality of side surfaces extend between the first surface and the second surface. A plurality of primary concave cutting edges are formed at an intersection between the plurality of side surfaces and the first and second surfaces, and a plurality of convex wiper edges are formed at an intersection between the plurality of side surfaces and the first and second surfaces. Each wiper edge has a step extending radially outward from a respective side surface. The cutting insert is mounted in a cutting tool such that the primary cutting edge and a wiper edge contact a workpiece to produce a high-quality surface finish on the workpiece.Type: ApplicationFiled: June 30, 2020Publication date: January 7, 2021Inventors: Bharath ARUMUGAM, Padmakumar MUTHUSWAMY, Andreas WÜRFELS
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Publication number: 20210001417Abstract: A double-sided, polygonal cutting insert includes a first surface and a second surface opposite the first surface. A plurality of side surfaces extend between the first surface and the second surface. A plurality of primary concave cutting edges are formed at an intersection between the plurality of side surfaces and the first and second surfaces, and a plurality of convex wiper edges are formed at an intersection between the plurality of side surfaces and the first and second surfaces. Each wiper edge has a step extending radially outward from a respective side surface. The cutting insert is mounted in a cutting tool such that the primary cutting edge and a wiper edge contact a workpiece to produce a high-quality surface finish on the workpiece.Type: ApplicationFiled: June 29, 2020Publication date: January 7, 2021Applicant: Kennametal India LimitedInventors: Andreas Wuerfels, Padmakumar Muthuswamy, Bharath Arumugam
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Publication number: 20200398352Abstract: A toolholder (10) has a pocket (20) that accommodates two styles of cutting inserts (25, 25?) having different clearance angles (CA). A support pad (78, 80) protrudes from two side walls (82, 84) of the pocket (20). Each support pad (78, 80) includes a first, planar wall (78a, 80a) and a second, planar wall (78b, 80b) formed at a different angle (94) than an angle (92) of the first, planar wall (78a, 80a). The first, planar wall (78a, 80a) enables the pocket (20) to accommodate the second cutting insert (25?), and the second, planar wall (78b, 80b) enables the pocket (20) to accommodate the first cutting insert (25). In one aspect, the support pads (78, 80) extend the entire length, L, of the support pad (78, 80). In another aspect, an indentation (112, 114) divides one or both of the support pads (178, 180) into two portions, each portion having two planar walls (178a, 178b, 178c, 178d, 180a, 180b, 180c, 180d).Type: ApplicationFiled: June 18, 2020Publication date: December 24, 2020Inventors: Bharath Arumugam, Padmakumar Muthuswamy
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Publication number: 20200368834Abstract: A cutting insert includes a body portion having an upper surface, a lower surface located opposite the upper surface, and side surfaces extending between the upper surface and the lower surface. The body portion disposed about an axis passing through the upper and lower surfaces. The cutting insert further including a plurality of projecting portions provided integrally with the body portion at an outer position thereof in a direction orthogonal to the axis. Each projecting portion has an upper and lower surface, two side surfaces, a side end surface extending between the side surfaces, a round corner surface extending between the upper and side end surfaces, and a cutting edge formed between at least one of the side surfaces and the side end surface. The side surface of each projecting portion is structured to engage a first or second contact surface of a mounting seat formed in a cutter body.Type: ApplicationFiled: May 6, 2020Publication date: November 26, 2020Inventors: Padmakumar MUTHUSWAMY, Bharath Arumugam
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Patent number: 10239124Abstract: A cutting insert including a body having three vertices, an upper face, a lower face, and flank faces joining the upper and lower faces. At least one cutting edge is formed at an intersection between the upper face and the flank faces. A generally triangular-shaped island surrounds a central axis of the cutting insert and is higher in elevation than at least one portion of the upper face.Type: GrantFiled: January 31, 2018Date of Patent: March 26, 2019Assignee: KENNAMETAL INC.Inventors: Padmakumar Muthuswamy, Arunachalam Muthuchidambaram, Arvind Mani
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Patent number: 10005131Abstract: A cutting insert includes a body having three vertices, an upper face, a lower face, and six planar flank faces perpendicular to and joining the upper and lower faces. A cutting edge is formed at an intersection between the upper and lower faces and each of the planar flank faces. A triangular-shaped island surrounds a central axis, A, of the cutting insert and is higher in elevation than the upper and lower faces. A tool holder includes a tool holder body having a generally triangular-shaped insert-receiving pocket with a triangular-shaped recess that is substantially identical in shape to the triangular-shaped island of the cutting insert that interacts with the island to properly locate and prevent rotation of the cutting insert when mounted in the tool holder.Type: GrantFiled: March 16, 2015Date of Patent: June 26, 2018Assignee: KENNAMETAL INC.Inventors: Padmakumar Muthuswamy, Arunachalam Muthuchidambaram, Arvind Mani
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Publication number: 20180154452Abstract: A cutting insert including a body having three vertices, an upper face, a lower face, and flank faces joining the upper and lower faces. At least one cutting edge is formed at an intersection between the upper face and the flank faces. A generally triangular-shaped island surrounds a central axis of the cutting insert and is higher in elevation than at least one portion of the upper face.Type: ApplicationFiled: January 31, 2018Publication date: June 7, 2018Inventors: Padmakumar Muthuswamy, Arunachalam Muthuchidambaram, Arvind Mani
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Publication number: 20150283619Abstract: A tool holder includes a body having a forward end with a clamp seating surface, and a clamp mounted on the clamp seating surface with an integrated insert-receiving pocket for receiving a cutting insert. The insert-receiving pocket is formed by a pair of side walls formed at an angle with respect to each other, depending on the shape of the cutting insert. A slot is formed in side walls to allow the clamp to act as a cantilevered member when a clamp screw is received in an insert screw, thereby causing the clamp to press against the cutting insert to securely hold the cutting insert in the insert-receiving pocket of the clamp.Type: ApplicationFiled: March 27, 2015Publication date: October 8, 2015Inventors: Arunachalam Muthuchidambaram, Padmakumar Muthuswamy
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Publication number: 20150273590Abstract: A cutting insert includes a body having three vertices, an upper face, a lower face, and six planar flank faces perpendicular to and joining the upper and lower faces. A cutting edge is formed at an intersection between the upper and lower faces and each of the planar flank faces. A triangular-shaped island surrounds a central axis, A, of the cutting insert and is higher in elevation than the upper and lower faces. A tool holder includes a tool holder body having an generally triangular-shaped insert-receiving pocket with a triangular-shaped recess that is substantially identical in shape to the triangular-shaped island of the cutting insert that interacts with the island to properly locate and prevent rotation of the cutting insert when mounted in the tool holder.Type: ApplicationFiled: March 16, 2015Publication date: October 1, 2015Inventors: Padmakumar Muthuswamy, Arunachalam Muthuchidambaram, Arvind Mani
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Patent number: D832319Type: GrantFiled: February 15, 2017Date of Patent: October 30, 2018Assignee: KENNAMETAL INC.Inventors: Padmakumar Muthuswamy, Andreas Wuerfels, Sivapapachari Chennuri, Shivanna Muniyappa, Bharath Kumar Arumugam