Abstract: A hot-forged TiAl-based alloy having excellent oxidation resistance and high strength at high temperatures, and a process for producing such an alloy. A TiAl-based alloy comprising Al: (40+a) atomic % and Nb: b atomic %, with the remainder being Ti and unavoidable impurities, wherein a and b satisfy formulas (1) and (2) below. 0?a?2??(1) 3+a?b?7+a??(2) Also, a TiAl-based alloy comprising Al: (40+a) atomic % and Nb: b atomic %, and further comprising one or more elements selected from the group consisting of V: c atomic %, Cr: d atomic % and Mo: e atomic %, with the remainder being Ti and unavoidable impurities, wherein a to e satisfy formulas (3) to (9) shown below. 0?a?2??(3) 3+a?b+1.0c+1.8d+3.

Abstract: A process for producing a metal hollow body comprising a first axial portion with a first cross-sectional area and a second axial portion with a second cross-sectional area, and in which the two axial portions are connected to one another by means of a shape transition running in the axial direction, the method includes producing a preform body having at least one transition region which extends in the axial direction and is arranged between the first and second axial portions, wherein, in the transition region, the cross-sectional area of the preform body continuously changes from the cross-sectional area of the first axial portion into the cross-sectional area of the second axial portion, accommodating the preform body in a die, a shaping mandrel into the preform body, and axially moving the shaping mandrel to upset the preform body in the die into the final shape of the hollow body.

Abstract: Die for high temperature forging of metal components, in particular intermetal components, including and upper an a lower die, characterized in that provided to each die part, at room temperature and with some clearance, is a surrounding reinforcing ring against which each die part is positioned when heated due to its thermal expansion and via which a compressive stress is exerted onto each die part (4).

Abstract: A method for manufacturing a cover of an electronic device includes steps of offering a metallic green piece comprising a top plate, a bottom plate and a connecting plate interconnecting a side of the top and bottom plates; offering a profile molding insert and a lower mold, the profile molding insert forming a shaping surface, the lower mold defining a cavity to receive an end of the green piece; putting the profile molding insert in the green piece, the shaping surface of the profiling molding insert being oriented towards the end of the green piece; inserting the end of the green piece in the cavity of the lower mold and punching the lower mold to enable the top and bottom plates at the end of the green piece bent along the shaping surface of the profile molding insert toward each other.

Abstract: This invention relates to the development of method for creating pattern on any metal surfaces used for structuring and decorative purposes by impression with the aid of heating. The method of the present invention can be modified to suite any industrial manufacturing processes.

Abstract: A device for producing at least partly closed profiles from a blank includes at least one first die and at least one second die which can be positioned opposite the first die. The first die has a cavity and two side walls, wherein the side walls and the cavity of the first die can be raised and lowered relative to one another. A U-punch is provided to produce a U-shaped cross-sectional shape of the blank with the first die. The second die of the device has a cavity for producing an at least partly closed cross-sectional shape from a U-shaped blank. The device also has at least one supporting core. The cavity of the second die has elongated side walls in the direction of the first die, with which, the side walls of the first die can be lowered relative to the cavity of the first die.

Abstract: An inner ring of a constant velocity universal joint includes ball grooves formed in an outer surface at predetermined intervals in a circumferential direction. Portions of side walls of each of the ball grooves that form edge lines with the outer surface are formed with a chamfer along the entire length of the axial direction.

Abstract: The present invention provides a rocker arm manufacturing method capable of improving the durability and excellent in productivity. In the method according to the present invention, an intermediate product 13 having both side walls 20 extended in a predetermined direction and arranged in parallel with each other and one end side connection wall 30 connecting lower ends of a longitudinal one end of both the side walls is obtained. Next, both side walls 20 formed at the one end of the intermediate product 13 are inwardly bent. Thereafter, ironing dies 60 are pressed down against outer surfaces of both the inclined side walls 20 from an upper side to a lower side to execute ironing of outer surface portions of both the side walls 20 to downwardly plastically fluidize the constituent material of both the side walls 20 to thereby form valve stem guide walls 35 at both sides of the one end side connection wall 30 in a downwardly protruded manner.

Abstract: A terminal crimping apparatus includes an anvil for supporting a metal terminal including a base plate portion for placing an electric wire thereon and a pair of crimping piece portions extending upwardly respectively from opposite side edges of the base plate portion and a crimper which includes a press-deforming portion having a generally arch-shape formed of two arc-shaped surfaces which are opposed to the anvil. The anvil and the crimper cooperate to press the crimping piece portions for crimping the crimping piece portions to the electric wire placed on the metal terminal. The shape of the crimper satisfies a formula, Index a=c·cos ?, where c represents a length of the arc-shaped surface of the crimper, and ? represents an angle formed by a tangential line to the arc-shaped surface at a central portion of the crimper and a vertical line.

Abstract: A crimping apparatus includes an anvil for supporting a metal terminal including a base plate portion for mounting an electric wire thereon and a pair of crimping piece portions extending upwardly respectively from opposite side edges of the base plate portion and a crimper which includes a groove portion being opposed to a supporting portion of the anvil. An inner surface of the groove portion of the anvil and a terminal support face of the supporting portion of the crimper cooperate to press the crimping piece portions for crimping the crimping piece portions to the electric wire mounted on the metal terminal. A width of the groove portion of the crimper is not more than 1.0 mm. The terminal support surface of the anvil is formed into a concavely curved surface in which a depth of the concavely curved surface is not smaller than 0.06 mm and is not larger than 0.17 mm in a cross-section of the anvil perpendicular to an axis direction of the electric wire.

Abstract: A dual ram assembly for a turret machine includes a first and second ram. The first ram comprises a first cam follower bracket and a first set of cam followers. An outer die tooling is connected to the first ram. The second ram comprises a second cam follower bracket and second set of cam followers. An inner knockout tooling is connected to the second ram. The first set of cam followers is configured to follow a first cam surface. The second set of cam followers is configured to follow a second cam surface. The first ram is connected to the second ram on a slide block. As the first and second sets of cam followers follow the first and second cam surfaces, the inner knockout tooling and the outer die tooling move toward or away from an article to be worked on.

Abstract: A wheel bearing device of the invention includes a flanged shaft member that includes a shaft portion to which a rolling bearing is assembled, a fitting shaft portion that is formed on one end side of the shaft portion and that is fitted to a center hole of a wheel, and a plurality of flange portions that extend radially outward on an outer peripheral surface located between the shaft portion and the fitting shaft portion and each of which has a bolt hole in which a hub bolt for fastening the wheel is arranged. Each flange portion is formed by side extrusion when a forged recess is formed at a center of an end surface of the fitting shaft portion by cold forging.

Abstract: A method and apparatus are present for manufacturing a part. The part is comprised of a metal alloy and is positioned to form a positioned part. An electromagnetic field is generated that heats the positioned part. A surface of the positioned part is exposed to an inert gas, while the electromagnetic field is generated to create an inverse thermal gradient between an exterior of the positioned part and an interior section of the positioned part to form a heat treated part.

Abstract: A method for producing a metal forged product having a plurality of branches includes a preliminary forging step of forming a preform by closed forging from a cylindrical material (301) having a surface layer (302) on a circumferential surface thereof such that the surface layer is contained in a surface region of the preform; an intermediate forging step of subjecting the preform to forging to thereby extrude the surface layer in the form of flash outside a periphery of a forged product corresponding to a target product; a final forging step of forging the forged product into a product assuming a target product shape; and a flash removal step of removing the flash containing the surface layer from the product assuming a target product shape to thereby produce a target forged product. The forged product is enhanced in mechanical characteristics and has no flash removal mark.

Abstract: An electric staking die that joins a joined material to a shaping material, wherein a bump is formed in the shaping material, the bump is inlaid in a hole made in the joined material and the electric staking die presses a shaping portion that is a portion exserting from the joined material as well as a part of the bump, have a recess on a pressing surface that presses said shaping portion of said shaping material wherein an open hole of said recess is larger than said hole made in said joined material, has been offered. The volume of the recess room is more than the volume of the shaping portion of the shaping material. The manufacturing facility comprises a supporting table, the electric staking die and a control means. A method to carry out the electrical staking operation using the electric staking die is presented as sufficient strength staking.

Abstract: A vapor chamber with a wick structure of different thickness includes a casing, a wick structure, a supporting body and a working fluid. The casing has a chamber. The wick structure is adhered to the inner wall of the chamber. The wick structure has a first wick section and a second wick section extending from the first wick structure. The thickness of the first wick section is larger than that of the second wick section. The supporting body is received within the wick structure. The working fluid is filled within the chamber. Via the above arrangement, the heat-conducting efficiency can be increased while the cost can be reduced.

Abstract: A fixed constant velocity universal joint includes: an outer race (10) having a spherical inner circumferential surface (14), the outer race (10) including axially extending ball grooves (16) formed in the spherical inner circumferential surface (14) at regular circumferential intervals; an inner race (20) having a spherical outer circumferential surface (24), the inner race (20) including axially extending ball grooves (26) formed in the spherical outer circumferential surface (24) at regular circumferential intervals; balls (30) interposed between pairs of the ball grooves (16) of the outer race and the ball grooves (26) of the inner race; and a cage (40) having pockets (46) for receiving the balls (30), the pockets (46) being formed at predetermined circumferential intervals. The outer race (10) is produced by hot forging or lathe-turning and subjected to thermal refining treatment.

Abstract: The invention relates to a method for cold-form profiling cylindrical, thin-walled hollow parts (1), comprising profiles (4) which extend in an essentially parallel manner in relation to the longitudinal axis (A) of the hollow part (1). At least one profiling tool (5) engages in a strike-like hammering manner with the outside of the hollow part (1) in a radial manner in relation to the longitudinal axis (A) of the hollow part (1). The profiling tool (5) engages, respectively, in an essentially vertical and oscillating manner on the surface of the hollow part (1). Then, the profiling tool (5) is displaced in an axial manner in relation to the hollow part (1) at a constant radial adjusting depth until the desired profile length is obtained.

Abstract: A deep drawing apparatus is provided in which a sheet material is subjected to optimal heating and cooling, whereby the limiting draw ratio is increased and a product can be worked more deeply, and uniformity of the sheet thickness of the product can be controlled. This apparatus includes: a punch 2 for subjecting a sheet material 9 to deep drawing; a die 3, used along with the punch, for forming the sheet material and subject the same to deep drawing; an anti-wrinkling component 4 for preventing wrinkling around the periphery of the forming portion in the sheet material; an induction heating coil 5 for directly heating the sheet material at a portion supported by the anti-wrinkling component; a heating controller 6 for controlling the amount of heating of the sheet material by the induction heating coil; and cooling means 21 to 23 for cooling the sheet material at the portion formed by the punch.

Abstract: A device for the production and/or machining of parts, in particular for the production of stampings, by at least one die which is capable of being put under pressure and/or force, and which has at least one plate and one die element, the die element being supported in the plate against pressure elements via a resilient element.

Abstract: A method of manufacturing a part with a tooth profile by cold forging includes an initial step of forming a initial tooth profile and a finishing step of forming a completed tooth profile by sizing. Between the initial step and the finishing step, is an intermediate step tooth thickness of the initial tooth profile is either maintained or reduced by 10% or less from the tooth thickness of the initial tooth profile. In the intermediate step an addendum part is expanded beyond the initial tooth profile by cold forging.

Abstract: A sputtering target manufactured by die forging is provided. It is characterized in that an average crystal grain size D at a portion where an average crystal grain size is the largest and an average crystal grain size d at a portion where an average crystal grain size is the smallest are related as 1.0<D/d<2.0. Further provided is a method capable of constantly manufacturing a sputtering target excellent in characteristics by improving and elaborating forging and heat treatment processes to render a crystal size fine and uniform, and a sputtering target excellent in quality obtained by this method.

Abstract: The cylinder/piston unit for a counterforce ram or vee ring of a fineblanking or stamping press equipped with at least one tool is continuously maintained at a preadjustable cushion pressure (P1) and is then subjected to a preadjustable displacement pressure (P2) from a connectable high-pressure source, with said pressure being set to a pressure (PU) varying between the cushion pressure (P1) and the pressure for forming or blanking by supplying a separate control oil quantity to a second accumulator via a central control unit, whereby a rise in pressure caused by the impact between the tool and the workpiece is regulated, independently of quantity of the control oil, from the pressure (P3) in the second accumulator to a permissible set pressure by discharging a significant part of the pressure pulse into a separate tank and the available cushion pressure allows ejection of the workpiece to be synchronized with retraction of the press ram.

Abstract: A semifinished hardenable-steel workpiece is introduced into a gap between a punch tool and a complementary die tool while the workpiece is heated above the AC3 point. Then one of the tools is vertically shifted toward the other tool so as to deform the workpiece to a predetermined shape. Subsequently the workpiece is gripped between the punch and the die tools while cooling at least one of the tools to press-quench the workpiece. Finally, but before the press-quenching is completed, an edge is cut off the still hot workpiece by relatively shifting an upper die and a lower die vertically past each other.

Abstract: A clinching tool (20) for producing a load-bearing, supporting or stable connection of a first metal workpiece (11) with a second metal workpiece (12). The clinching tool (20) comprises a die tool (20) and a counter-tool (30) which together form and join, by local plastic reshaping or deformation of the metal workpieces (11, 12), a clinch connection (13) which connects or permanently joins the first metal workpiece (11) and the second metal workpiece (12). The die tool (20) comprises a die having a flank (25) arranged concentrically with respect to the rotational axis (24). The flank (25) has a front end surface (23) perpendicular to the rotational axis (24). The flank (25) is conically shaped at least in the lower transition region (21) to the front end surface (23) and has a flank angle (W, W1, W2) smaller than or equal to 10 degrees, preferably smaller than or equal to 5 degrees.

Abstract: Method of producing a load-bearing steel construction connection, wherein a clinch connection (13) connecting a first metal workpiece (6.1, 6.2) with a second metal workpiece (6.3, 6.4) is formed by local deformation by means of a die tool (20) and a counter-tool (30). In that case initially the first metal workpiece (6.1, 6.2) and the second metal workpiece (6.3, 6.4) are placed one on the other on a processing surface of the counter-tool and aligned. The die of the die tool is then advanced and sunk into the two metal workpieces (6.1, 6.2; 6.3, 6.4) placed one on the other until the clinch connection (13) has been formed by plastic deformation. The first metal workpiece (6.1, 6.2) has a first workpiece thickness (t1) and the second metal workpiece (6.3, 6.4) has a second workpiece thickness (t2), which together give a total workpiece thickness (tt) which is thicker than 8 millimetres.

Abstract: A brake caliper for a disk brake, in particular for motorcycles and/or bicycles, includes a housing (30) in which a disk space (39) for receiving a brake disk and a brake cylinder (35) for receiving a brake piston (25) are formed. The brake cylinder (35) is connected to the disk space (39) and has, on its side opposite to the disk space (39), an assembly opening (50) through which the brake piston (25) can be inserted into the brake cylinder (35). A closure element (10) closes the assembly opening (50) after the insertion of the brake piston (25) into the brake cylinder (35). A securing element (21) secures the closure element (10) in the assembly opening (50) against forces in the direction of the main axis of the brake cylinder (35).

Abstract: A method for producing a piston for internal combustion engines includes the following steps: a first part is pre-fabricated by hot forging and a recess which has an undercut is formed in the first part during pre-fabrication by forming on the first part a projection, to which projection a lateral force is applied to form the undercut; a second part is pre-fabricated by hot forging and a projection is formed on this second part whose dimensions are matched to the dimensions of the recess; the two parts are joined together so that the projection on one part engages in the recess in the other part; and a compressive force is applied to the two parts which is sufficiently large and so aligned that the material of the projection on one part flows into the recess in the other part and completely fills it to connect the parts by positive fit.

Abstract: An improved, light weight ball member for universal connections having a hollow interior both in its ball portion and connecting portion for providing high strength and light weight and method for forming it through an improved forging process, using improved forging dies.

Abstract: The invention relates to a heat sink (1) for cooling a light element. The heat sink (1) has a thermally conducting inner part (2) suitable for accommodating the light element. The heat sink (1) additionally has a thermally conducting outer part (3) which encloses the inner part in at least one plane. The at least one light element is galvanically shielded from the thermally conducting inner part. The inner part (2) and the outer part (3) can be joined to one another via at least one thermally conducting bridging link (4) in such a way that there is at least one opening (5) between the inner part (2) and the outer part (3).

Abstract: A sprocket is formed by fine-blanking a steel plate using a die having a cutting edge shaped to produce rounded edges on the back sides of the sprocket tooth heads, and protrusions on the front sides. Thereafter the edges of the front sides of the sprocket tooth heads are formed in a press so that the protrusions are removed, and the edges of the front sides of the sprocket tooth heads have a rounded cross-sectional shape substantially the same as that of the edges of the front sides.

Abstract: A process for cold forging a metal fastener such as a self-clinching standoff includes a punch and die set at the final head trimming station which produces the shear burr only on the underside of the fastener head where it is not visible after installation. A knock-out pin which is reciprocal within the bore of the punch forcibly ejects the fastener through a passage in the die to a point beyond an opposite side of the die. A stripper sleeve which is reciprocal about the outside surface of the punch then moves from a retracted position over the end of the punch pushing a residual scrap ring from around the outside of the punch.

Abstract: A method of manufacturing a cam for a camshaft, comprising the steps of continuously applying, to a billet having a volume larger by a specified volume than a final product, a plurality of cold forging steps formed of a preliminary outline upsetting, an outline drawing, a simultaneous piercing of inner and outer diameter surfaces, a press-molding forming excess amount as burrs on the inner diameter surface, a piercing of the inner diameter surface for removing the burrs from the inner diameter surface, and a simultaneous ironing of the inner and outer diameter surfaces. The final finishing (machining) of a cam (profile) surface can be eliminated, and the final product of the cam for the camshaft having a high dimensional accuracy can be provided.

Abstract: A method for cold forging a stainless steel tool includes a preparation step, a cold forging step, a trimming step and a hardening step. At the preparation step, there is provided a billet of stainless steel. At the cold forging step, the billet is cold forged into a forged billet in a plurality of rounds. A gap between a round and a previous round is shorter than the time required for the time needed for the forged billet to return to the temperature in the beginning of the previous round. At the trimming step, the forged billet is lathed and grounded. At the hardening step, thermal treatment is conducted on the lathed, grounded, forged billet. A stainless steel tool is formed after cooling.

Abstract: A horizontal can necking machine assembly includes a plural of main turrets and a plural of transfer starwheels. Each main turret includes a main turret shaft, a main gear mounted on the main turret shaft, a pusher assembly, and a die capable of necking a can body upon actuation of the turret shaft. Each transfer starwheel includes a transfer shaft and a transfer gear mounted on the transfer shaft. The main gears are engaged with the transfer gears such that lines through the main gear center and the centers of opposing transfer gears form an included angle of less than 170 degrees, thereby increasing the angular range available for necking the can body. The main turrets and transfer starwheels may operate to neck and move at least 2800 cans per minute, and each pusher assembly may have a stroke length relative to the die that is at least 1.5 inches.

Abstract: The present invention provides a method and apparatus for forming a ductile sheet or work piece into a part or component. The method includes using a forming apparatus wherein the workpiece is placed between and upper die and a blank holder and then lowered onto a punch such that continued lowering of the upper die draws the workpiece around the punch. Once the draw process is complete, gas pressure acts on one side of the workpiece to press the workpiece against a forming surface of the punch to complete the forming process.

Abstract: A connecting rod is a fracture split-type connecting rod made of an ?+? type titanium alloy, including a rod main body and a big end provided at an end of the rod main body, the big end being fracture-split. The structure of the rod main body is an equiaxed ? structure, and the structure of fractured surfaces of the big end is an acicular ? structure.

Abstract: After a rod-like titanium material 20 is accommodated in a generally linear-shaped groove 13 of a first mold 7, a first guide portion 15 of a second mold 8 is fitted to the groove 13. Thereafter, the first mold 7 is moved along an arrow A direction relative to the second mold 8 fixed to an anchor block, by which the titanium material 20 substantially immovably retained in the groove 13 of the first mold 7 is bent and pushed into a through hole 24 of the second mold 8 by the first guide portion 15, thus being plastically deformed.

Abstract: The invention presents method and apparatus for forming of large thin panels and similar parts having integral stiffeners at one side of a board. The method includes progressive forming of preheated billets into sculptured dies of corresponding length and width by a forging die of substantially identical width and short length with slightly inclined and flat forging surfaces providing a smoothly convergent working zone, and a periodical transfer of the sculptured die into the working zone between successive strokes of the forging die. Control of the material flow is performed by selection of a ratio of the working zone length to the billet thickness, variable contact friction at both dies and application of additional compressive forces to the billet at ends of the working zone. For semi-continuous processing of very long parts, the sculptured die is composed by plurality of sectioned elements.

Abstract: Method of manufacturing a hollow blade (1) for a turbomachine in which the blade (1) is made from a preform (14) obtained from external primary parts (28, 30). In order to reduce costs, the root part (2) of the blade is formed from spare material (34) entirely located on only one of the two external primary parts of the preform (14).

Abstract: A rotatable contamination barrier is disclosed that has a plurality of closely packed blades configured to trap contaminant material coming from a radiation source. The blades are radially oriented relative to a central rotation axis of the contamination barrier. The blades comprise a metal compound having crystals oriented generally radially relative to the central rotation axis.

Abstract: A forging method for upsetting end portions of a raw material as diameter expansion scheduled portions includes: providing an upsetting apparatus having a fixing die, guides each having an insertion passage for inserting and holding an end portion of the raw material in a buckling preventing state, and punches each for axially pressing the end portion of the raw material inserted in and held by the insertion passage; inserting end portions of the raw material with the end portions protruded from the fixing die into the insertion passages; and moving the guides in direction opposite to moving direction of the punches such that length of exposed portion of the raw material becomes equal to or less than buckling limit length at cross-sectional area of the exposed portion of the raw material while simultaneously axially pressing the end portions of the raw material with the punches.

Abstract: A rotary swaging method for the tapering of metal tubes is disclosed. The method comprises the use of a rotary swaging machine comprising a die comprising a die taper comprising a length of greater than about 12 inches, a diameter reduction of greater than about 30%, and/or a taper angle of less than about 12 degrees.

Abstract: An exemplary metallic cover (20) includes a bottom base (21) and a plurality of side walls (22, 23, 24, 25). The side walls extend from bottom base. The bottom base and each of the side walls are connected by an edge structure (26). The metallic cover is made of a metallic material that has a yield strength in the range from about 80 MPa to about 150 MPa, an elongation ratio in the range from about 15% to about 28%, and a hardness in the range from about 45 HV0.2 to about 70 HV0.2. A method for making the metallic cover is also provided.

Abstract: The invention is to provide a magnesium alloy material such as a magnesium alloy cast material or a magnesium alloy rolled material, excellent in mechanical characteristics and surface precision, a producing method capable of stably producing such material, a magnesium alloy formed article utilizing the rolled material, and a producing method therefor. The invention provides a producing method for a magnesium alloy material, including a melting step of melting a magnesium alloy in a melting furnace to obtain a molten metal, a transfer step of transferring the molten metal from the melting furnace to a molten metal reservoir, and a casting step of supplying a movable mold with the molten metal from the molten metal reservoir, through a pouring gate, and solidifying the molten metal to continuously produce a cast material. In a process from the melting step to the casting step, parts contacted by the molten metal are formed by a low-oxygen material having an oxygen content of 20 mass % or less.

Abstract: A process for cold forging a metal fastener such as a self-clinching standoff includes a punch and die set at the final head trimming station which produces the shear burr only on the underside of the fastener head where it is not visible after installation. A knock-out pin which is reciprocal within the bore of the punch forcibly ejects the fastener through a passage in the die to a point beyond an opposite side of the die. A stripper sleeve which is reciprocal about the outside surface of the punch then moves from a retracted position over the end of the punch pushing a residual scrap ring from around the outside of the punch.

Abstract: A formation tool is used for deforming sheet metal on punching machines. The formation tool has an upper or top die tool and a lower or bottom die tool. Toward the top die, there is an upper mold insert movable relative to a holding-down device, and toward the bottom die, a lower mold insert movable relative to a stripper plate. The deformation of the metal sheet is effected upward with respect to a punching stroke plane. The formation tool has a lifting device for aiding in lifting the lower mold insert from an initial position which is at or below the punch stroke plane before a deforming operation, to a level above the punching stroke plane.

Abstract: A forging apparatus 1A includes a swaging apparatus 2 equipped with a fixing die 10, a guide 20 having an insertion passage 22 for inserting and holding a bar-shaped raw material 5 in a buckling preventing state, and a punch 30. The raw material 5 is fixed to the fixing die 10 with the one end portion of the raw material protruded. The one end portion of the raw material 5 is inserted into the insertion passage 22 of the guide 20. Thereafter, while pressing the raw material 5 with the punch 30 in the axial direction, in a state in which an entire peripheral surface of the exposed portion 8 of the raw material 5 exposed between the guide 20 and the fixing die 10 is not restrained, the guide 20 is moved in a direction opposite to the moving direction of the punch 30 so that a length of the exposed portion 8 of the raw material 5 becomes a budding limit length or less at a cross-sectional area of the exposed portion 8 of the raw material 5.

Abstract: A method and a tool for fabricating a toothing at a three-dimensional body produced by forming and fine blanking, especially an attachment for car seat components or the like produced out of a flat strip, wherein the flat strip by forming and fine blanking in a tool is formed into a pot-shaped body with inner forms and a substantially evenly curved edge. Afterwards, a toothing is fabricated into the edge radially extending to the inner side of the body. The toothing in the edge of the pot-shaped body is exclusively produced by cutting and/or shaving with a fine blanking die and/or a shaving device, and a burr and/or shaving chips developing during cutting and/or shaving are pressed into a recess in the base of the pot-shaped body allocated to the toothing.

Abstract: Disclosed herein is a hot forming method and apparatus that can improve strength of a product via die operation. The hot forming apparatus includes a lower die on which a workpiece is placed, an upper die coupled to the lower die to press the workpiece, a holder disposed between the upper and lower dies to form an inner space of the workpiece, and a cooling unit to cool the workpiece. The hot forming method includes coupling an upper die, a lower die and a holder with a workpiece placed on the lower die, followed by pressing the workpiece to perform a hot forming operation, determining whether or not a preset time has elapsed after pressing the workpiece, and cooling the workpiece by supplying a cooling fluid around the workpiece, if the preset time has elapsed.