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.

The apparatus for manufacturing a laminated core of a motor according to the present invention includes a laminating unit 1 for forming a base material 100 into a lamina member 201 by continuous press processing, and laminating a plurality of lamina members 201 to manufacture a laminated core 200; a pre-treatment unit 2 installed in the back of the laminating unit 1 to coat an activator on the front surface of the base material 100; and a discharge conveyor 10 installed at one side of the laminating unit 1 to transfer the laminated core 200 manufactured in the laminating unit 1, wherein the base material 100 has an adhesive coating layer 102 on the front surface and back surface of an electrical steel sheet 101.

A blanking die apparatus includes a lower die in which a plurality of working stations are arranged, and an upper the which moves upward and downward with respect to the lower die. A progressively fed sheet is sequentially blanked or stamped out respectively in the working stations to form iron core pieces, and then to laminate the iron core pieces to form a laminated iron core. The lower die includes a lifter part which lifts the sheet from the lower die when the sheet is progressively fed. The lifter part first lifters installed in an outer peripheral area in each of the working stations, and second lifters installed on an upper surface of a blank die which has a blanking hole formed for blanking the iron core pieces in an external form, or on an upper surface of a blank die holder.

A blanking die apparatus includes a lower die in which a plurality of working stations are arranged, and an upper the which moves upward and downward with respect to the lower die. A progressively fed sheet is sequentially blanked or stamped out respectively in the working stations to form iron core pieces, and then to laminate the iron core pieces to form a laminated iron core. The lower die includes a lifter part which lifts the sheet from the lower die when the sheet is progressively fed. The lifter part first lifters installed in an outer peripheral area in each of the working stations, and second lifters installed on an upper surface of a blank die which has a blanking hole formed for blanking the iron core pieces in an external form, or on an upper surface of a blank die holder.

The present invention relates to a method for manufacturing lamellas (20) from sheet metal (30) for a stack of such lamellas (20), i.e. a lamination, such as the core of a transformer or of a rotor or a stator of an electric machine. According to the present invention, in a first manufacturing step (A), the individual lamellas (20) are only partly cut loose from the sheet material (30), while connecting tabs (32) are left between the lamellas (20) and a remaining frame part (31) of the sheet material (30). As a result, the lamellas (20) can be subsequently processed (SP) separately, favorably without requiring the individual and/or direct handling thereof. Only thereafter, in second manufacturing step according to the present invention (B), the lamellas (20) are completely cut loose from the frame part (31) of the sheet material (30) by cutting the said connecting tabs (32) there between.

The present invention relates to a method for manufacturing lamellas (20) from sheet metal (30) for a stack of such lamellas (20), i.e. a lamination, such as the core of a transformer or of a rotor or a stator of an electric machine. According to the present invention, in a first manufacturing step (A), the individual lamellas (20) are only partly cut loose from the sheet material (30), while connecting tabs (32) are left between the lamellas (20) and a remaining frame part (31) of the sheet material (30). As a result, the lamellas (20) can be subsequently processed (SP) separately, favorably without requiring the individual and/or direct handling thereof. Only thereafter, in second manufacturing step according to the present invention (B), the lamellas (20) are completely cut loose from the frame part (31) of the sheet material (30) by cutting the said connecting tabs (32) there between.

Method and Apparatus for fabricating a spacer frame for use in an insulating glass unit. One of a multiple number of possible spacer frame materials is chosen for the spacer frame. An elongated strip of the material is moved to a notching station where notches are formed at corner locations. The character of the notches is adjusted based on the selection of the metal strip material and more particularly to achieve bending of the material in an repeatable, straightforward manner. Downstream from the notching station the metal strip is bent into a channel shaped elongated frame member having side walls. Further downstream a leading strip of channel shaped material is severed or separated from succeeding material still passing through the notching and bending station.

A low-pressure aluminum casting mold and a low-pressure aluminum casting process for a motor rotor. The low-pressure aluminum casting mold includes an upper blade profile assembly, a lower blade profile assembly, a rotor core, a dummy shaft and a diverter. The upper blade profile assembly includes an upper backing plate and an upper mold, and the lower blade profile assembly includes a lower backing plate and a lower mold. The low-pressure aluminum casting mold further includes a first pressing device and four sets of second pressing devices. The low-pressure aluminum casting process includes the steps of cold lamination, heating of the rotor core, mold preparation, hot lamination, and low-pressure casting.

In a method for manufacturing a laminated iron core from a thin sheet, the method includes coining the thin sheet from below to form a thinned bridge portion on an outer peripheral portion of an iron core piece, blanking the iron core piece from the thin sheet from above or below after forming the bridge portion, and laminating the iron core piece on another iron core piece to manufacture the laminated iron core.

In a method for manufacturing a laminated iron core from a thin sheet, the method includes coining the thin sheet from above to form a thinned bridge portion on an outer peripheral portion of an iron core piece, blanking the iron core piece downwardly from the thin sheet using a set of an outer-shape blanking punch and a die after forming the bridge portion, wherein the outer-shape blanking punch includes a projection portion fitted into the bridge portion when blanking, and laminating the iron core piece on another iron core piece to manufacture the laminated iron core.