摘要:
Provided is a coated tool in which a hard coating layer has excellent hardness and toughness and exhibits chipping resistance and defect resistance during long-term use. A surface-coated cutting tool is formed by coating the surface of a tool body with a (Ti 1-x Al x ) (C y N 1-y ) layer (the average amount Xavg of Al and the average amount Yavg of C satisfy 0.60 ‰¤ Xavg ‰¤ 0.95 and 0 ‰¤ Yavg ‰¤ 0.005). Crystal grains having an NaCl type face-centered cubic structure in the layer have {111} orientation, a columnar structure in which the average grain width W of the individual crystal grains having an NaCl type face-centered cubic structure is 0.1 µm to 2.0 µm and the average aspect ratio A thereof is 2 to 10 is included, and in the individual crystal grains having an NaCl type face-centered cubic structure, a periodic compositional variation in Ti and Al in the composition formula: (Ti 1-x Al x ) (C y N 1-y ) is present and the difference ”x between the average of maximum values of x which varies periodically and the average of minimum values thereof is 0.03 to 0.25.
摘要:
The invention relates to a cutting-tool main body (2), having a first end (21) for fastening to a holder of a machine tool and a second end (22), which has at least one seat (24) for an exchangeable cutting insert (3). The seat (24) has a threaded bore (27) for receiving a fastening screw (6) for the exchangeable cutting insert (3). The first end (21) and the second end (22) having the seat (24) are formed of a hard metal or cermet as a single piece.
摘要:
A surface-coated cutting tool of the present invention includes a base material and a coating formed on the base material, the coating includes one or two or more layers, a layer among these layers that abuts on the base material is a TiN layer, the TiN layer contains at least one element together with TiN, the element has a concentration distribution in a thickness direction of the TiN layer, and the concentration distribution includes a region where the concentration of the element decreases in a direction from the base material toward a surface of the coating.
摘要:
Provided is a coated tool which exhibits excellent wear resistance even in a case where carbon steel, alloy steel, high hardness steel, or the like is cut under high-speed cutting conditions with the generation of a high-temperature heat. In a surface-coated cutting tool in which a hard coating layer having a total layer thickness of 0.5 to 10 µm is deposited on a surface of a tool body made of WC-based cemented carbide or TiCN-based cermet, the hard coating layer has an alternately laminated structure of A layers and B layers, in a case where the A layer is expressed by a composition formula: (Al a Ti 1-a )N (here, a is in atomic ratio), the A layer satisfies 0.50 ‰¤ a
摘要:
Provided are: a method for manufacturing a cubic boron nitride cutting tool including a base metal and a sintered cubic boron nitride compact at a corner portion of the base metal, the method being capable of improving the accuracy of the center height to a large extent and sufficiently reducing the angle of inclination or the width of a negative rake face; and the cubic boron nitride cutting tool. The method includes grinding the sintered cubic boron nitride compact by pressing the sintered cubic boron nitride compact against an end face of a grindstone of a grinder, whose position and orientation are controllable, to form a flank face and a rake face on the sintered cubic boron nitride compact while the base metal of the cubic boron nitride cutting tool is tightly held by a chuck of the grinder. The grinding is performed in such a manner that the sintered cubic boron nitride compact is substantially ground. In the grinding to form the rake face, the rake face is formed so as to be recessed from a top face of the base metal or only a portion of the sintered cubic boron nitride compact that protrudes from a base-metal rake face is ground while the tool is continuously held by the chuck.
摘要:
The present invention relates to a tool (10) for machining a workpiece. The tool (10) has a cutting insert (14) with at least one cutting edge (26). In addition, the tool (10) has a tool holder (12) which extends substantially along a holder longitudinal axis (18) and has a cutting-insert receptacle (20), at a workpiece-side end, for receiving the cutting insert (14), said cutting-insert receptacle (20) having an upper clamping finger (22) and a lower clamping jaw (24). Moreover, the tool (10) has a substantially wedge-shaped clamping element (16) which is able to be fastened in the cutting-insert receptacle (20) in order to clamp the cutting insert (14) in the tool holder (12). Furthermore, the tool (10) comprises a fastening element for fastening the clamping element (16) in the cutting-insert receptacle (20) and simultaneously clamping the cutting insert (14) in the tool holder (12).
摘要:
An object of the present invention is to provide a coated cutting tool, which is a coated cutting tool to be applied to severer cutting, and improved in fracture resistance without lowering wear resistance and can be applied to processing for a long period of time. The present invention relates to a coated cutting tool, which is a coated cutting tool comprising a substrate and a coating layer formed onto a surface of the substrate, wherein the coating layer contains a hard layer of a composition represented by (Ti x M 1-x )N [wherein M represents at least one kind of an element selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al, Si and Y, and x represents an atomic ratio of a Ti element based on a sum of the Ti element and an M element, and satisfies 0.45≦x≦0.9.], an average grain size of grains constituting the hard layer is 200 nm or more and 600 nm or less, and the grains of the hard layer satisfy predetermined conditions.
摘要:
This surface-coated cutting tool includes a cutting tool body made of tungsten carbide-based cemented carbide and a hard coating layer deposited on a surface of the cutting tool body, in which the hard coating layer has at least one (Ti 1-x Al x )N layer (0.4 ≤ X ≤ 0.7, X is an atomic ratio) with an average layer thickness of 0.5 to 10 µm, the (Ti, Al)N layer has a cubic crystal structure, and Ia-Ib
摘要翻译:该表面被覆切削工具具备由碳化钨基超硬合金构成的切削工具主体和在该切削工具主体的表面上形成的硬质被覆层,硬质被覆层具有至少一个(Ti 1-x Al x)N (Ti,Al)N层具有立方晶体结构,Ia-Ib <5时,满足Ia-Ib <5的层(0.4≤X≤0.7,X为原子比) %)是波长400〜500nm处的硬涂层的平均吸光度,Ib(%)是波长600〜700nm处的硬涂层的平均吸光度。