Patent
Processing machine and bending method
TLDR
In this paper, a processing machine for bending operation on a workpiece includes a die, a punch movable in a first direction for pressing the workpiece against the die, and a slide member moving in a second direction perpendicular to the first direction.Abstract:
A processing machine for performing a bending operation on a workpiece includes a die, a punch movable in a first direction for pressing the workpiece against the die, a slide member movable in a second direction perpendicular to the first direction, a first cam device that moves the punch toward the die for deforming the workpiece when being actuated by movement of the slide member, a second cam device that moves the punch for pressing a surface of the workpiece when being actuated by movement of the slide member. The pressure angle of the second cam device is smaller than a pressure angle of the first cam device. The processing machine further includes a drive member configured to move the slide member such that the second cam device is actuated after the first cam device is actuated.read more
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Patent
Rolling bending method and rolling bending apparatus
TL;DR: In this article, a steel strip is fed and compressed between a driving roller and a compression roller to generate a stress greater than a yield stress in the steel strip and to elongate one periphery portion of the strip more than the other periphery portion.
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Patent
Equipment for producing corrugate fin
TL;DR: In this article, the equipment for producing corrugate fin is described, which consists of a plurality of punches respectively having projections, each of which is upwardly projected from an upper face of the punch and has a side slope face, a pair of cam blocks being capable of relatively moving close and away each other, the cam blocks respectively having pressing sections, which are capable of moving along the side slope faces and contacting the projections.
Patent
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Patent
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TL;DR: In this paper, flat-plate connecting portions are formed in a band plate by a connecting-portion forming unit, and the flatplate connecting portion corresponding to a predetermined connecting number is cut off so as to form a corrugated fin having a predetermined number of corrugations.
Patent
Method and apparatus for manufacturing fin
TL;DR: In this paper, a plate-shaped metallic sheet 3 which is a fin material is pressed into a corrugated cross section, and the plate shape is pressed in order for every one pitch P with a punch 25 provided with divided punches 26, 26,... which are divided at a pitch P of not longer than one wavelength λ toward the wavelength direction.