There is provided a punching device for punching a workpiece into a predetermined shape using a die and a punch, the device including: load sensors which measure a load in a punching direction at at least three predetermined points different from each other; and a control device that calculates a first moment, which is a sum of moments of the measured load around a first axis, and a second moment, which is a sum of moments of the measured load around a second axis, with respect to the first and second axes on a plane perpendicular to the punching direction, and determines that foreign matter is generated in a case where a magnitude of at least one of the first and second moments is deviated from a range of predetermined values.

There is provided a punching device for punching a workpiece into a predetermined shape using a die and a punch, the device including: load sensors which measure a load in a punching direction at at least three predetermined points different from each other; and a control device that calculates a first moment, which is a sum of moments of the measured load around a first axis, and a second moment, which is a sum of moments of the measured load around a second axis, with respect to the first and second axes on a plane perpendicular to the punching direction, and determines that foreign matter is generated in a case where a magnitude of at least one of the first and second moments is deviated from a range of predetermined values.

There is provided a punching device for punching a workpiece into a predetermined shape using a die and a punch, the device including: load sensors which measure a load in a punching direction at at least three predetermined points different from each other; and a control device that calculates a first moment, which is a sum of moments of the measured load around a first axis, and a second moment, which is a sum of moments of the measured load around a second axis, with respect to the first and second axes on a plane perpendicular to the punching direction, and determines that foreign matter is generated in a case where a magnitude of at least one of the first and second moments is deviated from a range of predetermined values.

There is provided a punching device for punching a workpiece into a predetermined shape using a die and a punch, the device including: load sensors which measure a load in a punching direction at at least three predetermined points different from each other; and a control device that calculates a first moment, which is a sum of moments of the measured load around a first axis, and a second moment, which is a sum of moments of the measured load around a second axis, with respect to the first and second axes on a plane perpendicular to the punching direction, and determines that foreign matter is generated in a case where a magnitude of at least one of the first and second moments is deviated from a range of predetermined values.

A system and process for fabricating components from sheet material. Various embodiments of the disclosure combine punching of components from sheet material with a scoring process that outlines the components prior to the punching operation. In addition, a system and process where the scored portion of the sheet material that includes the scored outline is subjected to a high compression flattening process prior to the punching operation is disclosed. Performing the flattening operation prior to the punching operation has the effect of streamlining the process. That is, the sheet material can be easily handled and conveyed from the scoring process, through the flattening process, and to the punching process without need for separate handling of the component.

Metal foil base material placed on lower blade is first restricted under pressure by lower blade and pad and then cut by a shearing action based on an engagement of lower blade side cutting edge and upper blade side cutting edge. Resin face sheets are fixed to the top surface of lower blade and the pressing surface of pad, the face sheets having a larger friction coefficient than that of these surfaces. By frictional forces imparted by face sheets, metal foil base material is prevented from being dragged and moved by the pressing force of the upper blade prior to cutting. Consequently, the occurrence of burr, roll-up, and so forth is eliminated thereby ensuring a good cutting quality.

Metal foil base material placed on lower blade is first restricted under pressure by lower blade and pad and then cut by a shearing action based on an engagement of lower blade side cutting edge and upper blade side cutting edge. Resin face sheets are fixed to the top surface of lower blade and the pressing surface of pad, the face sheets having a larger friction coefficient than that of these surfaces. By frictional forces imparted by face sheets, metal foil base material is prevented from being dragged and moved by the pressing force of the upper blade prior to cutting. Consequently, the occurrence of burr, roll-up, and so forth is eliminated thereby ensuring a good cutting quality.

The present invention relates to an apparatus for manufacturing a rechargeable battery case, the apparatus comprising: a punch which presses an object; a die which comprises an extrusion part for extruding the pressed object, wherein, when the punch presses the object such that the object enters the extrusion part, the die is elastically deformed so that the width of the extrusion part is increased, and when the punch continues to press the object such that the object is separated from the extrusion part, the die is elastically deformed so that the width of the extrusion part is restored to an initial value; and a knockout unit which is raised through the extrusion part of the die, has the object seated thereon, raises or lowers the object, and raises the object when the object interferes with the die such that the punch and the object are separated from each other.

The present invention relates to an apparatus for manufacturing a rechargeable battery case, the apparatus comprising: a punch which presses an object; a die which comprises an extrusion part for extruding the pressed object, wherein, when the punch presses the object such that the object enters the extrusion part, the die is elastically deformed so that the width of the extrusion part is increased, and when the punch continues to press the object such that the object is separated from the extrusion part, the die is elastically deformed so that the width of the extrusion part is restored to an initial value; and a knockout unit which is raised through the extrusion part of the die, has the object seated thereon, raises or lowers the object, and raises the object when the object interferes with the die such that the punch and the object are separated from each other.

The present invention relates to an apparatus for manufacturing a rechargeable battery case, the apparatus comprising: a punch which presses an object; a die which comprises an extrusion part for extruding the pressed object, wherein, when the punch presses the object such that the object enters the extrusion part, the die is elastically deformed so that the width of the extrusion part is increased, and when the punch continues to press the object such that the object is separated from the extrusion part, the die is elastically deformed so that the width of the extrusion part is restored to an initial value; and a knockout unit which is raised through the extrusion part of the die, has the object seated thereon, raises or lowers the object, and raises the object when the object interferes with the die such that the punch and the object are separated from each other.