Abstract: The throwaway insert includes a base and a cutting edge member. The cutting edge member includes a rake face, a flank face, a first connecting face, a second connecting face, and a first ridgeline serving as a cutting edge. The rake face includes a main surface and a first chamfer provided at an edge tip portion of the cutting edge member, the edge tip portion including an extreme tip portion of the cutting edge member. In a plan view from an upper surface of the base, the flank face, the first connecting face, and the second connecting face are located external to the base. The first chamfer is inclined relative to the main surface so as to increase a thickness of the cutting edge member as the first chamfer is closer to the main surface.

Abstract: A joined component includes a first member provided with a first joint surface having an arranging part where a brazing filler material is arranged, a second member joined to the first member by brazing, and provided with a second joint surface having an accommodating recess that opposes the arranging part, a guide groove formed in the first joint surface or the second joint surface, and extending from the arranging part or the accommodating recess toward a fringe of the first joint surface or the second joint surface, and a chamfer formed along the fringe of the first joint surface or the second joint surface, and the guide groove communicates to the chamfer.

Abstract: A sintered gear of annular shape which has a composition including a metal, has a plurality of pores in a surface thereof, and has a relative density of 93% or more and 99.5% or less.

Abstract: A processing system that successively processes a plurality of workpieces includes: a tool that processes each of the workpieces; a motor that rotates the tool or each of the workpieces; a control unit that controls the motor; and a measurement unit that obtains an electrical quantity of the motor, where the control unit includes a first control unit that controls a rotational speed of the motor based on a first difference between a first electrical quantity and a second electrical quantity, the first electrical quantity is an electrical quantity obtained by the measurement unit at a specific processed portion of a first workpiece currently being processed, the second electrical quantity is an electrical quantity obtained by the measurement unit during processing of a portion of a second workpiece corresponding to the specific processed portion, and the second workpiece is a workpiece that was processed prior to the first workpiece.

Abstract: A sintered material containing a parent phase composed of a metal and a plurality of pores present in the parent phase, wherein the pores in a cross section have an average cross-sectional area of 500 ?m2 or less, and the sintered material has a relative density in the range of 93% to 99.5%.

Abstract: A method for manufacturing a sintered gear comprising the steps of: preparing a cylindrical green compact; gear-cutting the green compact with a hob; and sintering the gear-hobbed green compact, wherein the hob is such that a ratio of a number of cutting edges thereof per round to a number of starts thereof exceeds 8.

Abstract: A manufacturing system according to an aspect of the present disclosure includes: a molding apparatus configured to uniaxially press raw material powder containing metal powder to fabricate a powder compact whose whole or part has a relative density of 93% or more; a robot processing apparatus including an articulated robot configured to machine the powder compact to fabricate a processed molded article; and an induction heating sintering furnace configured to sinter the processed molded article by high frequency induction heating to fabricate a sintered product.

Abstract: A method of making a sintered body includes a step of preparing raw material powder containing powder of inorganic material, a step of producing a powder compact having a high-density portion with a relative density of 93% or more and a low-density portion with a relative density of less than 93% by compressing the raw material powder injected into a mold, a step of producing a machined compacted part by machining at least the high-density portion of the powder compact, and a step of sintering the machined compacted part to make a sintered body, wherein a perimeter shape of a cavity constituted by the mold in a cross-section perpendicular to an axial direction of the mold is such than a maximum stress applied to an inner perimeter surface of the mold during a compacting process using the mold is less than or equal to 2.

Abstract: A method for manufacturing a shaped article includes a step of providing a high-speed steel powder, a step of forming a powder layer by spreading the powder, a step of forming a solidified layer in which the powder is in a bound state by irradiating the powder layer with a scanning laser beam, and a step of stacking up solidified layers by sequentially repeating the step of forming a powder layer and the step of forming a solidified layer, thereby forming the shaped article. The laser beam has an energy density of 60 J/mm3 or more and less than 600 J/mm3.

Abstract: Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.

Abstract: Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.

Abstract: A sintered material with a composition composed of an iron-based alloy and a structure in which the number of compound particles 0.3 ?m or more in size is less than 200 per 100 ?m×100 ?m unit area in a cross section, wherein the sintered material has a relative density of 93% or more.

Abstract: A core for use in an axial gap rotating electric machine, the core including: a yoke having an annular plate shape; and a plurality of teeth having a columnar shape arranged at intervals in a circumferential direction of the yoke, wherein the yoke has: an outer-circumferential face; an inner-circumferential face; a first face having a flat shape connecting the outer-circumferential face and the inner-circumferential face to each other; and a plurality of recessed portions connected to the first face, each of the plurality of teeth has an outer-circumferential face protruding in an axial direction of the yoke with respect to the first face, each of the plurality of recessed portions are connected to at least a portion of each one of the plurality of teeth in a circumferential direction of the outer-circumferential face, all shortest distances between at least one of an outer-circumferential edge of the first face and an inner-circumferential edge of the first face and the outer-circumferential faces of the plu

Abstract: A core used in an axial-gap rotating electric device includes an annular back yoke and a plurality of teeth protruding in an axial direction that is perpendicular to a first flat surface of the back yoke. The plurality of teeth are provided on the first flat surface at intervals in a circumferential direction. The back yoke and the teeth are constituted of an integrally-molded powder compact. A first curved section that connects a peripheral surface of each tooth and the first flat surface of the back yoke is provided at a corner between the tooth and the back yoke. The first curved section has a curvature radius ranging between 0.2 mm and 1.5 mm inclusive.

Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.

Abstract: A method for manufacturing a powder magnetic core includes: a step of preparing a soft magnetic powder and an oxide powder and preparing, as a raw material powder, a mixed powder of the soft magnetic powder and the oxide powder, the soft magnetic powder containing composite soft magnetic particles containing pure iron and an Fe-? alloy having an element ? more oxidizable than Fe, the composite soft magnetic particles each having a core-shell structure where a core is made of one of pure iron and the Fe-? alloy and a shell is made of the other, the oxide powder containing oxide particles containing at least one selected from Fe and an element ? that forms an oxide having higher electrical resistance than Fe3O4; a step of compacting the mixed powder into a green compact; and a step o sintering the green compact at 900° C. or more and 1300° C. or less.

Abstract: A core that is used in an axial-gap rotary electric machine and that includes a body, and frame-shaped flange portions. The body includes an annular yoke and columnar teeth that are arranged in a circumferential direction of the yoke. The flange portions are fixed to end portions of the respective teeth. The yoke and the teeth are composed of a single powder compact. Each of the flange portions is composed of a powder compact that has a through-hole. The end portion of each of the teeth is inserted in the through-hole, and an end surface of each of the teeth is exposed from the through-hole. A ratio of an area of the end surface of each of the teeth to an area within an outer circumferential edge of each of the flange portions is 7.5% or more in a plan view in an axial direction of the yoke.

Abstract: A powder compaction mold includes a die and upper and lower punches configured to fit into the die and is configured to compress a powder between the upper and lower punches to manufacture a powder compact. Of the members forming the powder compaction mold, at least one of two members in sliding contact with each other has therein a vent passage through which gas is vented from a filling space for the powder surrounded by the die and the lower punch to an outside of the powder compaction mold. The vent passage has a gas intake port that is open to a clearance section formed between the two members and connecting to the filling space.

Abstract: A core for use in an axial-gap rotary electric machine is annular and includes a plurality of core pieces into which the core is divided in a circumferential direction. Each core piece includes a yoke portion and a tooth portion that is formed integrally with the yoke portion and that projects from the yoke portion in an axial direction. Each yoke portion includes a plurality of protrusions provided on one side surface connected to the yoke portion of an adjacent one of the core pieces, and a plurality of recesses provided on other side surface connected to the yoke portion of another adjacent one of the core pieces, the recesses corresponding to the protrusions. An interval between the protrusions is 80% or less of a length of the one side surface of the yoke portion, the length being a direct distance between inner and outer peripheries of the yoke portion.

Abstract: This stator core is a stator core for a rotating electric machine of an axial gap type and includes a body portion formed by a compaction-molded body of soft magnetic powder whose surfaces are coated with insulating films, wherein the body portion is provided with one or a plurality of through holes.