A punch processing method for a laminated iron core includes sequentially feeding the steel sheets to a mold; and performing a plurality of processes in the mold, the plurality of processes includes fixing the steel sheets being stacked to each other at a first fixing part that is positioned outside a closed curved line corresponding to an outermost periphery of the laminated iron core and a second fixing part that is positioned in a portion that finally serves as the laminated iron core; and performing punch processing on the outermost periphery of the laminated iron core while the steel sheets are stacked.

This disclosure relates to methods and apparatuses for production of a workpiece. A first workpiece part is cut free from a first plate-shaped material by a separating cut made via the punch-handling tool. The first workpiece part is held in at least one of a clamped manner and tensioned manner via at least one of an upper tool and a lower tool of a punch-handling tool while being cut free. The workpiece part is aligned with the first plate-shaped material, a further plate-shaped material that differs from a material of the first workpiece part, and a second workpiece part and the aligned pieces are clinching with a clinch tool to connect the pieces at a connection point that is free from a filler material.

A rivet structure includes a female rivet plate and a male rivet plate. The female rivet plate defines an elongated countersunk hole. A size of the countersunk hole increases from a first side of the female rivet plate to a second side of the female rivet plate. The male rivet plate includes a rivet including a shaft portion and two head portions. The shaft portion extends from the male rivet plate. The two head portions are respectively arranged on opposite sides of the shaft portion on a side of the shaft portion facing away from the male rivet plate. The two head portions extend through the countersunk hole from the first side of the female rivet plate to the second side of the female rivet plate. The two head portions are configured to be stamped by a stamping member to fill in the countersunk hole.

An apparatus and method for manufacturing a container upper plate including a handle coupled thereto are disclosed. The apparatus includes a steel-plate-shaping unit for forming at least one projection on an upper surface of a steel plate, a holding-plate-supply unit for supplying a holding plate including a reception portion, and a mounting portion bilaterally extending from the reception portion and coupled to the steel plate, the mounting portion having at least one groove or at least one hole formed therein, to the steel-plate-shaping unit, a loading unit for loading the holding plate onto the steel plate such that the at least one projection on the steel plate is fitted into the at least one groove or the at least one hole, and a coupling unit for coupling the holding plate to the steel plate by pressing a fitted portion by means of a press plate.

A shaped component includes a main metal sheet and at least one torsion tab. The torsion tab has a torsion region and a tab head. An extension of the torsion region perpendicular to a center longitudinal axis of the torsion tab is less than an extension of the tab head perpendicular to the center longitudinal axis of the torsion tab such that the tab head provides a clamping region for clamping a sheet metal component such as a cable guide component to the main metal sheet. Also, the shaped component can include at least two torsions tabs such that at least two sheet metal components can be clamped to the shaped component.

A riveting structure for a thin heat sink fin and a thin cover plate is disclosed. The riveting structure includes a plurality of thin heat sink fins and a thin cover plate. The top of each thin heat sink fin is provided with a raised portion, the thin cover plate is formed with a plurality of riveting holes, and the raised portion is riveted and fixed to a corresponding one of the riveting holes in a rolling manner by a rolling device, instead of the traditional manual welding method. This improves the assembly efficiency greatly, reduces the labor cost, and reduces the product defect rate effectively.

A riveting structure and a riveting method are provided. The riveting structure includes a first metal element and a second metal element. The first metal element includes a first upper surface, a pressure-receiving portion and a recess portion. The recess portion is recessed from the first upper surface. The pressure-receiving portion is protruded from a surface of the recess portion. The second metal element includes a second lower surface and a protrusion portion and has a through hole. The protrusion portion is protruded from the second lower surface and correspondingly disposed in the recess portion. The through hole penetrates the second metal element via a central part of the protrusion portion. The pressure-receiving portion is correspondingly received in the through hole and is adapted to be pressed and deformed to be riveted to the through hole.

A robot assembling system for assembling a multi-layer cage comprises a first assembling workstation, a second assembling workstation, a third assembling workstation, and a robot. The multi-layer cage includes a bottom case, a top case, a partition plate, and a partition assembly. The first assembling workstation assembles the partition plate and the partition assembly to form a partition device. The second assembling workstation assembles the partition device and the top case to form a top case assembly. The third assembling workstation assembles the top case assembly and the bottom case to form the multi-layer cage. The robot transmits the bottom case, the top case, the partition plate, the partition assembly, the partition device, or the top case assembly between the workstations. The robot assists an assembly process at each of the workstations.

This disclosure relates to methods and apparatuses for production of a workpiece. A first workpiece part is cut free from a first plate-shaped material by a separating cut made via the punch-handling tool. The first workpiece part is held in at least one of a clamped manner and tensioned manner via at least one of an upper tool and a lower tool of a punch-handling tool while being cut free. The workpiece part is aligned with the first plate-shaped material, a further plate-shaped material that differs from a material of the first workpiece part, and a second workpiece part and the aligned pieces are clinching with a clinch tool to connect the pieces at a connection point that is free from a filler material.

An improved electro-hydraulic clinching system involves generating, through a high potential electric shock, a forceful wave in a fluid such as water, and applying the force of the wave to a sheet of metal. The force of the wave results in deforming the sheet and making the sheet material move through a hole in a second sheet adjacent to the first sheet, thus joining the two sheets. In an alternative implementation, in which neither sheet includes an opening, the force of the wave moves both sheets simultaneously, thereby causing them to join together at the point of impact.