Green body and cutting tool having helical superhard-material rake face
AssigneeShanghai Nagoya Precision Tools Co., Ltd.
InventorSi-Rui Sun
Life of this patent
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Abstract
A green body is provided. The green body is made of a superhard material, is used for being fixed on a matrix so as to be machined into a cutting edge part of a cutter. The green body includes a first side surface and a second side surface. Both the first side surface and the second side surface twist at a set helical angle. After being fixed to the matrix, the green body is machined into an edge part for cutting, such as a main cutting edge and a center cutting edge located on the green body made of a same superhard material. The green body is applied to machining the cutting edge of the cutter. A rotating center has a continuous and intact center cutting edge formed by a superhard material.
Claims7
A blank for manufacturing a cutter, wherein the blank comprises a main body, one end of the main body is machined into a cutting part, and the cutting part comprises a helical slot body crossing in a radial direction;
- and a green body is assembled with the slot body and is fixed via welding or bonding;
- the green body, made of a superhard material, wherein the green body is capable of being machined into a cutting edge part of a cutter, the green body comprising a first side surface and a second side surface both twisting at a set helix angle;
- the edge part comprises a main cutting edge and a center cutting edge located on the green body made of a same superhard material;
- and
- the green body is platy, and has a thickness greater than 0.3 mm and less than or equal to 4 mm, a length greater than 4 mm and less than or equal to 20 mm, and a width greater than 4 mm and less than or equal to 20 mm.
A cutting tool, comprising:
- a platy green body, made of a superhard material and comprising a first plate surface and a second plate surface, the first plate surface at least comprising a first helical surface, and the second plate surface at least comprising a second helical surface;
- and
- a matrix, comprising a main body and a longitudinal axis, the main body rotating around the longitudinal axis, one end of the main body being set into a handle part capable of being mounted on rotary machinery, an other end being machined into a cutting part for implementing cutting machining, and the cutting part comprising a helical slot body crossing in a radial direction,
- wherein the green body and the slot body are assembled, and a center cutting edge close to the longitudinal axis and having a rake face and a flank face, and a main cutting edge having a rake face and a flank face are then machined and formed on the green body;
- a main cutting edge is made of a continuous and intact superhard material, and has a helical rake face;
- and a center cutting edge is made of a same intact superhard material and crosses a rotating center;
- and
- the green body is platy, and has a thickness greater than 0.3 mm and less than or equal to 4 mm, a length greater than 4 mm and less than or equal to 20 mm, and a width greater than 4 mm and less than or equal to 20 mm.
Dependencies are inferred from the claim text.