A punching method includes: punching out a plurality of electrical steel sheets in a stacked state by a mold, wherein sheet thicknesses of the electrical steel sheets are set to be 0.35 mm or less, a Vickers hardness (test force 1 kg) of the sheets is set to be 150 to 400, and an average crystal grain size of the sheets is set to be 50 to 250 μm, a clearance of the mold is set to be 7% or more of a minimum sheet thickness of the sheet thicknesses of the electrical steel sheets and equal to or lower than 7% of a total sheet thickness of the electrical steel sheets, and a pressure that a sheet presser of the mold applies to the electrical steel sheets is set to be 0.10 MPa or more.

A press working apparatus includes: a first positioner that is provided to at least one press of a first press or a second press and that performs positioning of at least one die of the at least one press; and a second positioner that performs positioning of the at least one die and that positions the at least one die in a position deviated in a feeding direction with respect to the first positioner.

A workpiece transport device capable of improving a workpiece transport speed to increase productivity is provided. The workpiece transport device transports a workpiece pressed by a press machine. The workpiece transport device includes a base portion, a crossbar that holds the workpiece, a parallel mechanism, and a motor. The parallel mechanism is supported on the base portion. The parallel mechanism is configured to change a position of the crossbar relative to the base portion by operating in a plane defined by a transport direction in which the workpiece is transported and an up-down direction. The motor generates a driving force for driving the parallel mechanism. The motor is mounted on the base portion.

The invention relates to a method for cutting up punching scrap running as waste from a punching device, in particular from a fine blanking press, by means of a waste-cutting device, in particular which is arranged as a progressive tool with respect to the punching device, wherein, by way of the waste-cutting device, the punching scrap is completely cut through perpendicularly to the running direction thereof at a cutting edge by a cutting knife and in this way punching-scrap portions are formed, wherein, together with the stroke of the cutting knife, at least one scrap web of the punching scrap that is spaced apart from the punching-scrap boundaries is cut through by at least one punch which is spaced apart from the cutting knife, preferably by at least two punches, in particular so that each punching-scrap portion is subdivided into at least two punching-scrap sub-portions. The invention also relates to a waste-cutting device of a punching device, comprising a cutting knife and a cutting edge, wherein, by way of the interaction of cutting knife and cutting edge during a stroke of the cutting knife, punching scrap which can be passed through between cutting knife and cutting edge in a running direction can be completely cut through perpendicularly to the running direction, in which, spaced apart from the cutting knife, provision is made of at least one punch which is arranged in a locationally fixed manner with respect to the cutting knife and which can be moved together with the cutting knife, in particular by way of which at least one scrap web of the punching scrap can be cut through in the punching scrap.

A fin manufacturing method and apparatus includes: a first inter-row slit device that forms, by forming in a thin metal plate having a plurality of openings a plurality of slits extending in a longitudinal direction of the thin metal plate while leaving an uncut portion between the plurality of slits, metal strips partially coupled to each other in a transverse direction; a feed roller and a feeding device that convey, in the longitudinal direction, the metal strips in which the plurality of slits is formed by the first inter-row slit device; and a stacking device that (i) forms fins by cutting the uncut portion via which the metal strips are coupled to each other, to separate the metal strips and by cutting the metal strips at regular length intervals and (ii) stacks the formed fins.

A carrier is configured to hold a product carried on a material strip during horizontal conveying of the material strip. The carrier comprises a first holding member positioned on the upper or lower side of the product on the material strip during the horizontal conveying of the material strip and extending along a conveying direction of the material strip. A first contact surface is formed on the side of the first holding member facing the product, the first contact surface is configured to contact the product during the horizontal conveying of the material strip to limit the up and down bouncing movement of the product.

In a progressive pressing device, a first state of a lifting part is a state not sandwiching an elongated metal plate between a lifting plate and an upper plate in a state in which a positioning pin and a positioning hole are not engaged, a second state is a state not sandwiching an elongated metal plate between a lifting plate and an upper plate in a state in which a positioning pin and a positioning hole are engaged, and a third state is a state sandwiching an elongated metal plate between a lifting plate and an upper plate in a state in which a positioning pin and a positioning hole are engaged.

A machine arrangement for manufacturing sheet metal includes a workpiece carrier configured to store a sheet metal workpiece and/or a sheet metal manufacturing product, and three spatially separate functional units. The functional units include two manufacturing units and a secondary functional unit. Each manufacturing unit includes a manufacturing apparatus that has a work area. The workpiece carrier is arrangeable in the work area in a manufacturing position. The secondary functional unit has a functional area. The workpiece carrier is arrangeable in the functional area in a functional position. The machine arrangement further includes a transporting unit movable in a driven manner together with the workpiece carrier between the functional units, thereby enabling the workpiece carrier to be transferred between the functional units. The workpiece carrier is a universal workpiece carrier arrangeable at the two manufacturing units in the manufacturing position and at the secondary functional unit in the functional position.

Methods and devices for removing a workpiece part from a remaining workpiece, comprise a holding apparatus that is moveable in a removal direction and switchable between a fixing state for fixing the workpiece part to the holding apparatus and a release state for releasing the workpiece part from the holding apparatus. The holding apparatus has at least one electrically conductive first contact element for contacting the workpiece part at one or more first contact points and at least one electrically conductive second contact element for contacting the workpiece part at one or more second contact points. The device also has a sensor apparatus that uses the contact elements to check, in a first check state, the complete separation of the workpiece part from the remaining workpiece and to check, in a second check state, fixing of the workpiece part to the holding apparatus being in the fixing state.

A sheet material machining system includes a sheet material machining machine which is configured to machine a workpiece to produce a machined workpiece that includes a plurality of products and a residual material. The machined workpiece is configured to be placed on a sorting table. The plurality of products are configured to be placed on a temporary placement table. At least one product among the plurality of products are configured to be placed on a discharge table. A carrier includes an attracting actuator and a mobile actuator. The order management processor is configured to control the carrier and includes a storage configured to memorize a layout of the plurality of products in the workpiece. The plurality of products are associated with an attracting order.