A press die includes: a die base; a plurality of die members arranged on the die base so as to produce a forming surface; a plurality of shims each of which is interposed between the die base and each of the plurality of die members; and a frame that surrounds the die base, the plurality of die members, and the plurality of shims. Each of the plurality of shims has a hardness higher than the plurality of die members. A regulating means that carries out a regulation so that an amount of displacement of each of the plurality of die members caused by pressure applied during press forming becomes smaller in proportion to proximity of the die member to the frame is provided between the die base and the plurality of die members or provided on the die base.

A pilot assembly and method has a cylindrical pilot body with a tapered outer end, a grooved inner end, and a central portion with at least one inwardly curved side wall relief, as well as internally mounted reciprocating ejector pins with outer ends that protrude through holes in the outer body end to strip stock from the pilot. A spring has its outer end mounted in the groove in the outer body end, and an inner end attached to the inner body end in a pre-tensed condition. A cap screw has an enlarged head that has at least a portion thereof fit into the pilot sidewall relief, and a threaded shank that anchors the pilot in an associated die member.

A pilot assembly and method has a cylindrical pilot body with a tapered outer end, a grooved inner end, and a central portion with at least one inwardly curved side wall relief, as well as internally mounted reciprocating ejector pins with outer ends that protrude through holes in the outer body end to strip stock from the pilot. A spring has its outer end mounted in the groove in the outer body end, and an inner end attached to the inner body end in a pre-tensed condition. A cap screw has an enlarged head that has at least a portion thereof fit into the pilot sidewall relief, and a threaded shank that anchors the pilot in an associated die member.

Provided is a method for producing a hot forged material capable of preventing the generation of double-barreling shaped forging defects. The method for producing a hot forged material, wherein both an upper die and a lower die are made of Ni-based super heat-resistant alloy and the method comprises a hot forging step of pressing a material for hot forging by the lower die and the upper die in the air to form the hot forged material, the method comprising: a raw material heating step of heating the material for hot forging in a furnace to a heating temperature within a range of 1025 to 1150 C.; a die heating step of heating the upper die and the lower die to a heating temperature within a range of 950 to 1075 C.; and a transferring step of transferring the material for hot forging onto the lower die by a manipulator after the completion of the raw material heating step and the die heating step, wherein a value obtained by subtracting the heating temperature of the upper die and the lower die from the heating temperature of the material for hot forging is 75 C. or more.

Provided is a method for producing a hot forged material capable of preventing the generation of double-barreling shaped forging defects. The method for producing a hot forged material, wherein both an upper die and a lower die are made of Ni-based super heat-resistant alloy and the method comprises a hot forging step of pressing a material for hot forging by the lower die and the upper die in the air to form the hot forged material, the method comprising: a raw material heating step of heating the material for hot forging in a furnace to a heating temperature within a range of 1025 to 1150 C.; a die heating step of heating the upper die and the lower die to a heating temperature within a range of 950 to 1075 C.; and a transferring step of transferring the material for hot forging onto the lower die by a manipulator after the completion of the raw material heating step and the die heating step, wherein a value obtained by subtracting the heating temperature of the upper die and the lower die from the heating temperature of the material for hot forging is 75 C. or more.

A composite manufacturing method with extruding and turning process for extruding and turning a workpiece includes a clamping step, an isolating step, an extruding step and a turning step. The composite manufacturing method is used for manufacturing a surgical instrument. The clamping step is for positioning a clamping portion of the workpiece by a lathe chuck of the lathe apparatus. The isolating step is for blocking a lathe extruding force via an isolating portion of an extruding apparatus. The extruding step is for extruding a processing end portion of the workpiece by the extruding apparatus and generating the lathe extruding force transmitted toward a clamping portion of the workpiece. The turning step is for turning the processing end portion of the extruded workpiece by a lathe apparatus. The extruding apparatus is disposed on the lathe apparatus.

A composite manufacturing method with extruding and turning process for extruding and turning a workpiece includes a clamping step, an isolating step, an extruding step and a turning step. The composite manufacturing method is used for manufacturing a surgical instrument. The clamping step is for positioning a clamping portion of the workpiece by a lathe chuck of the lathe apparatus. The isolating step is for blocking a lathe extruding force via an isolating portion of an extruding apparatus. The extruding step is for extruding a processing end portion of the workpiece by the extruding apparatus and generating the lathe extruding force transmitted toward a clamping portion of the workpiece. The turning step is for turning the processing end portion of the extruded workpiece by a lathe apparatus. The extruding apparatus is disposed on the lathe apparatus.

A method of processing a material by use of high kinetic energy comprises a piston driven from a start position by a hydraulic system pressure by a drive chamber, by only one stroke, to transfer high kinetic energy to a blank/tool to be processed, whereafter there is a risk that a rebound of the piston will occur, so a step is taken in connection with said stroke performed, to prevent said piston from making a rebound with an essential content of kinetic energy to avoid negative effects as a result, whereafter the piston is returned to said start position by means of a second chamber, wherein a valve means closes the driving connection between the system pressure and the piston, the valve means is controlled by a pilot valve controlling the entire striking progress, and the second chamber is pressurized with the system pressure during the entire striking progress.

A method of processing a material by use of high kinetic energy comprises a piston driven from a start position by a hydraulic system pressure by a drive chamber, by only one stroke, to transfer high kinetic energy to a blank/tool to be processed, whereafter there is a risk that a rebound of the piston will occur, so a step is taken in connection with said stroke performed, to prevent said piston from making a rebound with an essential content of kinetic energy to avoid negative effects as a result, whereafter the piston is returned to said start position by means of a second chamber, wherein a valve means closes the driving connection between the system pressure and the piston, the valve means is controlled by a pilot valve controlling the entire striking progress, and the second chamber is pressurized with the system pressure during the entire striking progress.

A forging method serving to use shaping tooling suitable for high temperature forging of a preformed metal part having angular twist undercuts (49) in its final shape, the method comprising placing the preformed metal part on a movable central insert (44) of the tooling and blocking it in the tooling (40), and forming side fins of the preformed metal part (30) in their final shape by moving a movable top first die and the movable central insert in a common direction towards a stationary bottom die, the movable central insert including at least two cutaway zones (20, 52) for eliminating the angular twist undercuts and thus enabling the preformed metal part in its final shape to be dislodged in a single extraction direction.