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Match Document Document Title
7331265 Electromagnetic punch presses with feedback device  
An electromagnetically driven punch press is described. The punch press has an engine plate and a die set and a ram between the engine plate and die set. The engine plate has an assembly fixed...
7077042 Three-side trimmer  
The three-side trimmer comprises an alignment station (F) for receiving booklet bundle ( 32 ) and aligning the booklets, and a cutting station (D) for cutting the top, bottom and fore edges of the...
6923103 Machine for the continuous multi-stroke slotting of plate-shaped workpieces  
A machine for the multi-stroke, continuous slotting of plate-shaped workpieces and especially sheet metal plates is described. A slotting tool ( 16 ) and the workpiece are movable in a forward...
6877408 Press punching method and apparatus for forming a plurality of through holes by changing a travel distance of a punching mold  
A press punching apparatus makes many holes at the same time and changes an arrangement of the holes without changing a punch block and a die block. A punching mold is provided with a plurality of...
6868763 Method and machine for the continuous multi-stroke slotting of plate-shaped workpieces  
A method and machine for the multi-stroke, continuous slotting of plate-shaped workpieces and especially sheet metal plates are described. As part of a method for the continuous multi-stroke...
6715409 Method and apparatus for eliminating free clearances in a press shutheight adjustment mechanism  
An apparatus for use in a press machine eliminates the free clearances present between the threaded portions of a screw and adjustment nut assembled in a shutheight adjustment mechanism. A...
6393954 Work-cutting device  
The present invention eases possible rubbing between an upper cutting edge and a work cutting surface of a work cutting apparatus during the elevation of the upper cutting edge to prevent the upper...
6357125 Adjustable stroke mechanism for a scotch yoke assembly  
A scotch yoke mechanism for converting rotational movement into reciprocating linear movement and having an adjustable stroke length. The scotch yoke mechanism includes a stroke length toggle...
6267050 Quick access/adjustment piston  
An hydraulic piston-cylinder assembly configured within a press machine enables adjustments to be made to the shutheight parameter through changes in the positioning of the bed in accordance with...
6055903 Press, specifically punch press  
A connecting rod unit is eccentrically supported on the drive shaft. The connecting rod unit is pivotally mounted via link members to double arm levers. Each double arm lever is pivotally mounted...
6041685 Impact micrometer  
Adjustable apparatus (20, 20a) is provided, preferably in the form of an impact micrometer, which includes first and second interfitted bodies (22, 24, 22a, 24a) cooperatively defining therebetween...
5970839 Work cutting apparatus  
A device that is able to reduce the variation in the clearance between the upper and lower blades and of which the clearance adjustment operation is simple. The work cutting apparatus has a freely...
5915293 Method for compensating for variation in shut height during starting and stopping of a press  
A method for compensating for the variation in shut height of a press during stamping and forming as it is starting and stopping comprising user input of the minimum press speed at which feeding of...
5884546 Punch unit  
A punch unit includes a punch driver having a punch connected to it. A guide bushing receives the punch for guiding its axial displacement. A compression spring urges the punch driver rearwardly,...
5852964 Safety mechanism for right angle shear  
When power failures or breakdowns occur, an apparatus that is able to hold the upper blade in the raised position without using the drive source and increase the safety and facilitate maintenance...
5848568 Device for driving a slide in a link press  
A link mechanism for driving a slide in a machine press has a pivot pin with an adjustable position for varying the die height and the stroke length of the slide. A first link of the link mechanism...
5839341 Punch unit  
A punch unit allows an adjustable length adjustment of the punch by disengaging projection-seat means which connect the housing and the guide bushing and then rotating the guide bushing relative to...
5761971 Press shutheight control through hydraulic pressure  
A mechanical press having a very precise shutheight control system is disclosed. The press includes a bed connected to a frame with a slide connected with the frame for reciprocating motion...
5706711 Punch drive control apparatus  
A control apparatus which increases a hit rate, stabilizes a punch process, and makes use of a small motor. Such control apparatus is applicable to a punch drive apparatus that drives a punch tool...
5609099 Press shutheight adjustment mechanism with hydrostatic bearing pads  
A shutheight adjustment assembly of a mechanical press including an adjustment nut rotatably connected to an adjustment screw. Hydrostatic bearing pads are provided below the adjustment nut to...
5575186 Machine tool stroke control system  
A unique system and process for controlling the stroke positions of tools on a multi-station metal working machine are disclosed. The system and process are suitable for use with a metal working...
5493959 Apparatus for correcting slide bottom dead center position of mechanical press  
An apparatus for rapidly and accurately correcting the bottom dead center position of the slide of a mechanical press during the operation of the press. The apparatus includes a hollow cylindrical...
5456165 Method for adjustment in motion of press shutheight  
A shutheight adjustment mechanism of a mechanical press including a piston member restrained from moving vertically by a sealed liquid-filled chamber of relatively short height. The chamber acts as...
5435216 Method and apparatus for operating a hydraulic ram  
A method for controlling punch strokes of a punch press machine includes the step of performing a first punching operation with a punching tool wherein a sheet of material is in a first preselected...
5400682 Method of side-cutting by turret punch press  
A method of side-cutting by a turret punch press for improving working efficiency to a large extent. The method comprises a step in which a selected one (5 1 ) of a plurality of punch chips (5 1 ...
5398601 Press shutheight adjustment in motion mechanism  
A shutheight adjustment mechanism of a mechanical press including a piston member restrained from moving vertically by a sealed liquid-filled chamber of relatively short height. The chamber acts as...
5381681 Machine with an adjusting device located in a movable machine part  
A machine and method for adjustment of the tooling of a forming machine while continuously operating such machine. The adjusting device being located in a movable or stationary machine part, such...
5351576 Apparatus for adjusting slide stroke of press  
A crankshaft mechanism for use with a press having a slide member, which includes an eccentric crankshaft. In one form of the mechanism, the crankshaft has a cylindrical eccentric portion. An...
5349902 Press shutheight adjustment mechanism  
A shutheight adjustment mechanism of a press including a male threaded member threadedly engaged to a female threaded member with a clearance space therebetween is flooded with a liquid to reduce...
RE34602 Multistroke punching method and apparatus therefor  
To eliminate defects such as burr, rollover, sags, scar, etc. from cut-off surfaces of a workpiece in a turret punch press, for instance, a novel height-different punch formed with a lower front...
5245904 Non-skid ball bearings with adjustable stroke for punch presses  
An electromagnetically-driven punch press having adjustable anti-skid supports for the ball bearings and ball cages of the ball-bearing bushings which carry the movable tool for preventing downward...
5176054 Control apparatus and method for progressive fracture of workpieces  
A control apparatus and method for progressively fracturing a workpiece from a material sheet in a press in which a ram is progressively advanced through the thickness of the material sheet in...
5113736 Electromagnetically driven punch press with magnetically isolated removable electromagnetic thrust motor  
An electromagnetically-driven punch press has an electromagnetic drive thrust motor comprising a fan-cooled solenoid winding and movable armature mounted in elevated location for isolating the...
5113756 Press machine  
A press machine comprising: a slider which reciprocates between its top dead point position and bottom dead point position; a stationary bolster; a position adjusting mechanism for adjusting an...
5090282 Method of and apparatus for reducing the punching stress of a punching machine having fixed abutments  
The limiting of the movement of the stroke of the ram is made by at least one fixed abutment. At least one fixed abutment includes a feeler, which determines the elastic deformation of the...
5072620 Stamping tool  
A stamping tool for use in an auto-indexable tool station having a number of character inserts that can be rotatably moved below a striker area so that a thin metal plate or sheet of metal may be...
5052257 Mass forces balancing apparatus in a machine having a crank shaft drive, specifically a punching machine  
The balancing weights are hingedly mounted at their lower ends to link rods. These link rods are hingedly mounted to an extended section of first rods. At opposite ends the balancing weights are...
5042336 Control apparatus and method for progressive fracture of workpieces  
A control apparatus and method for progressively fracturing a workpiece from a material sheet in a press in which a ram is progressively advanced through the thickness of the material sheet in...
5020407 Adjustable form tool head  
A form tool built to be used in a single station of a turret press machine for the sheet metal industry that comprises a punch body rigidly attached to an adjustable form tool head. The adjustable...
4987794 Stroke adjusting apparatus for a punching press  
A pusher rod extends lengthwise through the eccentric shaft. An additional disk clutch is located inside of the flywheel, which disk clutch is connected to a shaft section, which engages the pusher...
4944221 Articulated lever cutting and forming press  
The invention relates to an articulated lever press consisting of a press stand (1.1) and a frame-shaped press slide (2.1), the slide (2.1) possessing a hydraulic cylinder drive (2.12) which is...
4932300 Control mechanism for adjusting the punch tool carriage stroke of a punch press  
The punch press with a control mechanism for the displacement of a punch tool carriage and a punch tool mounted therein comprises a machine frame, a punch tool carriage movable up and down in the...
4923386 Apparatus for forming leads of a semiconductor device  
A lead forming apparatus suitable for use in forming the leads of a semiconductor device is disclosed. The apparatus has a housing for supporting a stationary lower mold half, a support plate...
4914977 Stroke control device for use in press  
A stroke control has an eccentric member fitting on an eccentric member mounting portion of a drive shaft and the eccentric member is at an eccentricity with respect to the drive shaft and has...
4903560 Punching devices  
A punching device for automatic punching machines for the punching of paper, cardboard and the like, comprising: a driving mechanism for a top shoe; such as a rocking lever drive, elliptical cam...
4899616 Press with stroke control device  
A press with a stroke control device has a drive shaft having an eccentric member mounting portion with an eccentric member thereon, the eccentric member is at an eccentricity with respect to the...
4846014 Crankshaft mechanism having a variable stroke and a press employing said mechanism  
A crankshaft mechanism for use with a press having a slide member which comprises an eccentric crankshaft having first and second cylindrical portions. The first portion is rotatable within a...
4790173 Shut height adjustment means in pressing apparatus  
A device for adjusting the shut height of a press includes a rotatable dial (16) interposed between a ram mounting block (6) fixed to a press ram (2), and a tooling ram (14). The dial (16) is keyed...
4771663 Multistroke punching method and apparatus therefor  
To eliminate defects such as burr, rollover, sags, scar, etc. from cut-off surfaces of a workpiece in a turret punch press, for instance, a novel height-different punch formed with a lower front...
4763551 Punching devices  
A punching device for automatic punching machines for the punching of paper, cardboard and the like, comprising: a driving mechanism for a top shoe; such as a rocking lever drive, elliptical cam...
Matches 1 - 50 out of 204 1 2 3 4 5 >