The invention relates to a device for welding rod-shaped conductors (14), comprising a compression chamber for receiving joining sections (13) of the conductors to be joined together, the compression chamber being limited in a first axial direction (z-axis) on two opposite sides by an active surface of a sonotrode (16) transmitting ultrasonic vibrations in the direction of the z-axis and by a counter surface of a counter electrode (18), the device having a knife device which is provided with a drive device and comprises a knife (24) movable in the direction of the z-axis, said knife having a cutting edge which can be moved past the compression chamber, wherein a drive motor of the drive device is arranged in an installation space arranged below the sonotrode, the drive motor being connected to a knife holder (26) via a deflection gear (31) in order for the knife to be able to perform a cutting motion, the knife being moveable in the direction of the z-axis.

This application relates to a device for cutting sheet metal to provide a positive coupling between the cutting clearance and the immersion depth. The device includes a first circular blade having a first blade edge and a second circular blade having a second blade edge. The sheet metal to be cut is located between the first and the second circular blades during cutting. The first circular blade is rotatably mounted about a first axis of rotation and the second circular blade is rotatably mounted about a second axis of rotation which runs parallel to the first axis of rotation. A relative position of the first circular blade relative to the second circular blade can be adjusted. A distance between the first circular blade and the second circular blade is defined by a cutting clearance by which the first blade edge is axially spaced apart from the second blade edge in the direction of the first axis of rotation, and by an immersion depth by which the first blade edge and the second blade edge radially overlap each another in a direction perpendicular to the axes of rotation.

This application relates to a device for cutting sheet metal to provide a positive coupling between the cutting clearance and the immersion depth. The device includes a first circular blade having a first blade edge and a second circular blade having a second blade edge. The sheet metal to be cut is located between the first and the second circular blades during cutting. The first circular blade is rotatably mounted about a first axis of rotation and the second circular blade is rotatably mounted about a second axis of rotation which runs parallel to the first axis of rotation. A relative position of the first circular blade relative to the second circular blade can be adjusted. A distance between the first circular blade and the second circular blade is defined by a cutting clearance by which the first blade edge is axially spaced apart from the second blade edge in the direction of the first axis of rotation, and by an immersion depth by which the first blade edge and the second blade edge radially overlap each another in a direction perpendicular to the axes of rotation.

A metal plate shearing apparatus, a control method thereof, and a metal plate shearing method are disclosed. The metal plate shearing apparatus includes a lower pad, an upper pad installed on the lower pad to ascend and descend and configured to press and fix an upper surface of a metal plate of a cut target placed on the lower pad, a shear blade installed adjacent to one side surface of the upper pad to ascend and descend and configured to shear a cutting line of the metal plate by descending, and a heating device configured to locally heat the cutting line of the metal plate.

A scrap cutter is provided in a subsequent stage of the press machine and cuts the scrap material fed from the press machine. The scrap cutter includes: a slide configured to be driven to reciprocate in the vertical direction by a Scotch yoke mechanism; an upper blade attached to the slide; and a lower blade attached to a frame and configured to cut the scrap material in cooperation with the upper blade. A shear angle formed by the upper blade and the lower blade has an angle that gradually decreases from a start of cutting of the scrap material toward an end of cutting to allow the driving torque of the crankshaft of the Scotch yoke mechanism to be constant from the start of cutting to the end of cutting in cutting a scrap material of a cutting capacity limit.

A cutting method using a stamping press according to the present disclosure is a method to cut a workpiece that is configured from a first metal sheet and a second metal sheet joined at a weld portion and that has a heat-affected zone around the weld portion, in which the workpiece is cut using a punch. The punch includes a flat portion and a projecting portion projected more toward the workpiece than a flat portion of the punch. The workpiece is positioned with respect to the punch at a position such that the projecting portion starts cutting at least at one out of the heat-affected zone or the weld portion before the flat portion cuts the workpiece. The workpiece is then cut by moving the punch and a die relative to each other in this state of positioning so as to shear across the weld portion on the workpiece.

The electromechanical vertical cutting shear (1) comprises an electric servomotor (4) combined with a gear reducer (5) at least one shaft (6) bearing one or more spools (7), at least one motion transmission means (8) which is connected to a guillotine (11), and a cutting system comprising at least a pair of knives (12). The electromechanical shear (1) comprises a pulley system (9) for every motion transmission means (8).

The electromechanical vertical cutting shear (1) comprises an electric servomotor (4) combined with a gear reducer (5) at least one shaft (6) bearing one or more spools (7), at least one motion transmission means (8) which is connected to a guillotine (11), and a cutting system comprising at least a pair of knives (12). The electromechanical shear (1) comprises a pulley system (9) for every motion transmission means (8).

There is provided a cutting method for cutting a workpiece using a cutting tool comprising a die and a punch, including: arranging the workpiece between the die and the punch, and in a state in which a wedge-shaped first cutting part of the die and a wedge-shaped second cutting part of the punch are opposed, pushing the punch relatively to the die side to cut the workpiece; wherein: a front end angle θ.sub.1 of the first cutting part and a front end angle θ.sub.2 of the second cutting part are each 100 or more and 1200 or less, and a front end radius R.sub.1 of the first cutting part and a front end radius R.sub.2 of the second cutting part are each 0.5% or more and 35.0% or less of a sheet thickness.

There is provided a cutting method for cutting a workpiece using a cutting tool comprising a die and a punch, including: arranging the workpiece between the die and the punch, and in a state in which a wedge-shaped first cutting part of the die and a wedge-shaped second cutting part of the punch are opposed, pushing the punch relatively to the die side to cut the workpiece; wherein: a front end angle θ.sub.1 of the first cutting part and a front end angle θ.sub.2 of the second cutting part are each 100 or more and 1200 or less, and a front end radius R.sub.1 of the first cutting part and a front end radius R.sub.2 of the second cutting part are each 0.5% or more and 35.0% or less of a sheet thickness.