A guide pin assembly for metal forming dies includes a cylindrical guide pin body with an external retainer groove adjacent one end thereof in which a retainer ring is received. An annular guide pin ring with an outside diameter greater than the pin body, has a counterbore adjacent the outside end thereof and a retainer groove in a medial portion thereof which receives the outer portion of the retainer ring to securely interconnect the pin body and the ring and thereby form an enlarged head at one end of the pin body which positively limits reciprocal motion between two associated die members. A circular guide pin head cap covers the outer end of the head ring, and includes a support collar that is closely received in the counterbore of the ring, and engages the retainer ring to securely hold the same in place.

A method of notching lamina workpieces with a notching press system. The method includes moving a ram and an upper tooling section to an open position and inserting a lamina workpiece onto an indexing spindle, and then moving the ram and the upper tooling section to a closed position, producing a cut opening in the lamina workpiece between a punch and a first die opening. The press ram and the upper tooling section are then moved back to the open position and the index motor is rotated to position the cut opening of the workpiece over a second die opening. The torque applied to the index motor is then reduced, and the press ram and the upper tooling section are moved to an intermediate position so that the piloting device cooperates with the cut opening of the workpiece for angular positioning of the workpiece.

A stamping die includes an upper die member, a lower die member, and at least one guidance member operably disposed to guide relative movement between the upper and lower die members. The members are movable relative to one another in reciprocating motion along an axis to generate work-pieces. The guidance member has a guiding surface for guiding relative movement between the die members. The guidance member also has at least one wear indicator cavity recessed from the guiding surface. A depth of the wear indicator cavity corresponds to the extent of acceptable wear of the guiding surface. The cavity allows for visual inspection of the extent of wear of the at least one guidance member and thus obviates the requirement that the guidance member be removed from the stamping die for inspection.

A stamping die includes an upper die member, a lower die member, and at least one guidance member operably disposed to guide relative movement between the upper and lower die members. The members are movable relative to one another in reciprocating motion along an axis to generate work-pieces. The guidance member has a guiding surface for guiding relative movement between the die members. The guidance member also has at least one wear indicator cavity recessed from the guiding surface. A depth of the wear indicator cavity corresponds to the extent of acceptable wear of the guiding surface. The cavity allows for visual inspection of the extent of wear of the at least one guidance member and thus obviates the requirement that the guidance member be removed from the stamping die for inspection.

An impact forming device and method for local small features on a metal thin-walled curved-surface part. The impact forming device includes impact forming dies, impact loading units and a forming supporting die, wherein the impact forming die is provided with an impact forming part, and the impact forming part is a convex part corresponding to a local small feature; the forming supporting die can support and fix a metal thin-walled curved-surface part without forming local small features, and the forming supporting die is provided with concave parts matched with the impact forming parts; and the impact loading unit includes a guide rail, an explosive ball and a detonating block, under the impact loading of the impact loading units, the impact forming parts can impact the metal thin-walled curved-surface part without forming local small features under the matching action of the concave parts to form the local small features.

An impact forming device and method for local small features on a metal thin-walled curved-surface part. The impact forming device includes impact forming dies, impact loading units and a forming supporting die, wherein the impact forming die is provided with an impact forming part, and the impact forming part is a convex part corresponding to a local small feature; the forming supporting die can support and fix a metal thin-walled curved-surface part without forming local small features, and the forming supporting die is provided with concave parts matched with the impact forming parts; and the impact loading unit includes a guide rail, an explosive ball and a detonating block, under the impact loading of the impact loading units, the impact forming parts can impact the metal thin-walled curved-surface part without forming local small features under the matching action of the concave parts to form the local small features.

The present invention discloses a device for assembling products in a die. The device comprises a pushing portion and an assembling portion. The pushing portion comprises a pushing block (11), a pushing spring (10) and a pushing wedge (9) wherein the pushing block (11) is connected with the pushing spring (10), the pushing wedge (9) is arranged above the pushing block (11) and is in wedge-shaped connection with the pushing block (11). The assembling portion comprises an assembling wedge (6), a transmission wedge (4) and an assembling male die (5), wherein the transmission wedge (4) is arranged above the assembling male die (5) in wedge-shaped connection and both of them are arranged in the lower die base (2), the assembling wedge (6) is arranged above the transmission wedge (4) in wedge-shaped connection while in contact.

Various designs of die shoe assemblies are provided, each assembly configured to adjust vertical positioning of a die platform within the assembly, in order to correspondingly adjust vertical positioning of a die used with the assembly. The assemblies address limitations often associated with conventional die shoes designed to be used with shims. The assemblies use various methods and corresponding mechanisms to make the adjustment a time efficient process, while in so doing also enabling the desired extent of adjustment to be effectively and accurately provided.

Various designs of die shoe assemblies are provided, each assembly configured to adjust vertical positioning of a die platform within the assembly, in order to correspondingly adjust vertical positioning of a die used with the assembly. The assemblies address limitations often associated with conventional die shoes designed to be used with shims. The assemblies use various methods and corresponding mechanisms to make the adjustment a time efficient process, while in so doing also enabling the desired extent of adjustment to be effectively and accurately provided.

A torsion shaft structure based multi-link all-electric servo synchronous bending machine, comprising a machine frame, a lower die fixedly connected to the machine frame and used for bending, a slider capable of moving up and down along the machine frame, and an upper die fixedly connected to the slider and cooperating with the lower die to perform bending, wherein the slider is left-right symmetrically connected to drive mechanisms for driving the slider to realize a transmission ratio adjustable motion.