A laminated iron core includes a plurality of blanked iron core pieces laminated together, a continuity of side parts of the iron core pieces configuring a side surface of the laminated iron core. The side part of each iron core piece includes a specific light reflection area having a prescribed width along a circumferential direction, where the specific light reflection area has different light reflection characteristics from the other area of the side part of the iron core piece, and a striped pattern, configured by the specific light reflection areas, exists on the side surface of the laminated iron core.

A laminated iron core includes a plurality of blanked iron core pieces laminated together, a continuity of side parts of the iron core pieces configuring a side surface of the laminated iron core. The side part of each iron core piece includes a specific light reflection area having a prescribed width along a circumferential direction, where the specific light reflection area has different light reflection characteristics from the other area of the side part of the iron core piece, and a striped pattern, configured by the specific light reflection areas, exists on the side surface of the laminated iron core.

A notching tool for notching a workpiece, the notching tool having a notching punch and a die having an inner surface. The notching punch includes first and second punch portions, the first punch portion has a punch plane intended to hit the workpiece in a notching operation. The second punch portion protrudes from the punch plane in a direction which is substantially perpendicular to the punch plane, and is intended to contact the inner surface of the die when the notching punch hits the workpiece. The disclosure further provides a use of this notching tool and a method of notching which involves the operation of such a notching tool.

Making a plurality of notching marks on flanges of a rule to enable bending of the rule, including: punching the plurality of notching marks on the flanges of the rule to enable shaping of the rule into a channel letter; and tapering the flanges positioned around sharp notching angles made on the channel letter.

An adhesively-laminated core for a stator capable of suppressing an iron loss of an electric motor and also having excellent productivity is provided. The adhesively-laminated core for a stator includes a plurality of electrical steel sheets which are stacked on one another and of which both surfaces are coated with insulation coatings, and adhesion parts which are disposed between the electrical steel sheets adjacent to each other in a stacking direction and cause the electrical steel sheets to be adhered to each other. All sets of the electrical steel sheets adjacent to each other in the stacking direction are adhered via the adhesion parts. An adhesive forming the adhesion parts is a two-agent type acrylic-based adhesive (SGA) which includes an acrylic-based compound, an oxidizer, and a reducer and in which a portion of the acrylic-based compound and the oxidizer are assigned to a first agent and the remaining portion of the acrylic-based compound and the reducer are assigned to a second agent. The adhesion parts are partially provided between the electrical steel sheets adjacent to each other in the stacking direction.

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 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 laminated core can be contained in a rotor and/or in a stator and include at least one first sheet metal part assembly and at least one second sheet metal part assembly. The two sheet metal part assemblies are arranged alternately lying one against the other in a stacking direction. Every first sheet metal part has first teeth projecting from a connecting part radially relative to the axis of rotation. Correspondingly, every second sheet metal part has second teeth projecting from a second connecting part. The first teeth extend from the axis of rotation at a distance different from how far the second teeth extends from the axis of rotation to form a step to mesh the rotor with an associated stator and increase the air gap between them without increasing dimensions of the laminated cores in the stacking direction.

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 front succeeding material still passing through the notching and bending station.

A die apparatus includes a first die and a second die which are respectively used in adjacent working stations that sequentially blank or stamp out a progressively fed thin metal sheet. The first and second dies are held in a state where outer peripheral surfaces of the first and second dies directly contact each other.