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7204117 |
Method and device for producing a hard metal tool
The method has a first material of lesser hardness acting as a rod-shaped carrier for a second material of greater hardness, each materials formed within a respective extrusion press tool and the...
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6732429 |
Method for measuring pressure on the substrate of spin formed catalytic converter
The present invention is generally directed towards a catalytic converter installed in the motor vehicles. More specifically to a method of measuring the pressure on the substrate as the catalytic...
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6460396 |
Power press
This invention relates to a hydraulic force modulator used in a power press to provide a predetermined force with a defined force applied by a ram of the press at defined incremental positions of...
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6237381 |
Power press ram force modulation and apparatus for use therewith
This invention relates to a hydraulic force modulator used in a power press to provide a predetermined force with a defined force applied by a ram of the press at defined incremental positions of...
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6205828 |
Forging die, and method and apparatus for controlling the same
A hydraulic pressure control apparatus comprises a high pressure accumulator for sucking pressure oil supplied to a relief chamber of a relief valve to make changeover for the relief valve from a...
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5979210 |
Drawing device for a press with control device for maintaining pressure during press stoppage
A drawing device for a press is provided with a drawing slide, with a sheet holder having a sheet held therein, and with a pressure cheek which is arranged under the sheet holder and is connected...
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5966981 |
Press assembly
A press assembly includes first and second members which engage opposite sides of a workpiece during operation of the press assembly. A cushion assembly is provided to absorb force transmitted from...
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5829289 |
Method of controlling a crimp press for crimping an assembly
A method of controlling a crimp press for crimping an assembly includes the steps of placing an assembly in an open crimp die of a crimp press, advancing a ram of the crimp press to a predetermined...
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5823104 |
Press for cold working of metal workpieces
The invention is a press for cold working of metal workpieces. The invention includes a double-acting linear hydraulic power drive cylinder, a continuous press frame for accepting reactive forces...
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5715724 |
Adaptive, self-regulating forging hammer control system
In forging hammers, according to the present invention, more than one inlet valve is employed and more than one exhaust may be employed. The force of impact for a particular blow is controlled by...
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5526669 |
Computer controlled pull gun system
A computer controlled pull gun system for pulling interference fit fasteners into a mounting hole. The pull gun has a rotatable and axially movable mandrel the is driven by a pneumatic motor. An...
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5497642 |
Apparatus and method for forming precision surfaces on shaft-like components
An apparatus and method for forming precision surface shapes on shaft-like parts comprises a pair of substantially cylindrical and rotatable dies having forming surfaces located adjacent a...
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5390520 |
Closed-frame type pipe-bending press
A pipe-bending press with a large bending length in a closed frame construction, has a frame with side columns and upper and lower cross-pieces. The table supporting the lower bending tools is...
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5309747 |
Using exhaust gas mass flow rate to control superplastic forming
A forming die which includes a die cavity contains a forming blank composed of a metallic alloy having superplastic properties. The forming pressure in a pressurized space adjacent the forming...
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5299444 |
Hydraulic cushioning system for press, having hydraulic power supply including means for adjusting initial pressure to be applied to pressure-pin cylinders
A hydraulic cushioning apparatus for a press having an upper and a lower die assembly (3, 9) for forming a sheet-like workpiece (6), including hydraulic cylinders (54) incorporated in one of the...
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5195042 |
Apparatus and method for controlling crimping of articles
A crimping apparatus and method for crimping electrical connectors to cables. The apparatus can automatically sense the size of a connector and can automatically determine a minimum acceptable...
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5142892 |
Arrangement for adjusting the roll gap in rolling mill stands, particularly in strip rolling mill stands for hot or cold rolling
An adjusting arrangement for the roll gap or rolling force in rolling mill stands. The arrangement includes two hydraulic adjusting cylinders which act from both sides on a work roll to be...
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5129248 |
Gas mass superplastic forming
An apparatus and method for controlling the superplastic forming process by measuring and controlling the gas mass flow rate of the gas displacing the blank being formed.
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5123272 |
Pipe bending machine for elongate material
An improvement in a bending machine for elongate material consisting of a modified upper pressure member. The upper pressure member has a material contacting surface divided into a plurality of...
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5113679 |
Apparatus for crimping articles
An apparatus for crimping electrical connectors to cables. The apparatus generally has a ram, an anvil, an electrical ram position sensor, and a computer for at least partially controlling movement...
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5046344 |
Apparatus for sizing a workpiece
A sizing press has a pair of opposed rotatably supported pressing tools for reducing the width of a flat metal slab. Piston cylinder assemblies rotatably oscillate the pressing tools relative to...
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4996857 |
Method and an apparatus for manufacturing a metallic bellows
A first insert member and a head member are inserted in a cylindrical metal material. A liquid pressure chamber is defined in the material by the first insert member and the head member. First and...
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4959984 |
Precision bending apparatus
A tube bending apparatus is provided for placing a plurality of bends in an elongated tube. The apparatus includes a position sensor for sensing at least one location on the tube for assessing the...
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4718263 |
Method of controlling output energy in a forging hammer by anticipative sensing of input parameters
A forging hammer employs compressible fluid to drive the ram into impact and a trapped volume of compressible fluid to cause the ram to be retracted from impact position when fluid driving the ram...
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4715203 |
Cold-working tool
A cold-working tool for thrusting an attached mandrel (14) partially through a hole in a metal workpiece and extracting the mandrel from the hole is disclosed. The tool comprises a pneumatic...
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4712404 |
Method of self-regulating consistency of applied energy in a forging hammer employing input differential
A forging hammer employs compressible fluid to drive the ram into impact and a trapped volume of compressible fluid to cause the ram to be retracted from impact position when fluid driving the ram...
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4712415 |
Method of determining stroke length of a pneumatic forging hammer using sensed peak pressure
A forging hammer employs compressible fluid to drive the ram into impact and a trapped volume of compressible fluid to cause the ram to be retracted from impact position when fluid driving the ram...
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4712405 |
Method of self-regulation of output energy of forging hammers using input sensed peak of lifting fluid pressure for correction
A forging hammer employs compressible fluid to drive the ram into impact and a trapped volume of compressible fluid to cause the ram to be retracted from impact position when fluid driving the ram...
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4698991 |
Method of and apparatus for controlling forming press conditions
A method of and apparatus for controlling forming press conditions aids in maintaining stability in a mechanical double action press forming provided with an upper die (inner) and an outer ram...
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4649493 |
Tube expansion apparatus
An apparatus for expanding a tube against the walls of a circumscribing bore, or a sleeve within a tube to effect an interference joint therebetween, is described herein. The tube expansion...
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4483173 |
Device for the automatic regulation of the push rods of a stamping press
Process and device for the automatic regulation of the push rods of a press by means of a self-locking rod jack. The device comprises a table, a matrix, a blank holder, a main slide, a punch and a...
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4308735 |
Automatic pressure control apparatus for counterbalancer
An automatic pressure control apparatus for a counterbalancer of a press having a movable portion including a crank, a connecting rod, a slide and an upper die detachably mounted on the slide, the...
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4229965 |
Hydraulic circuit of a hydromechanical drawing press
There is disclosed a hydraulic circuit of a press for the hydromechanical drawing of pressings or workpieces in a pressure chamber forming the drawing die which includes at least two spaces for the...
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4131164 |
Adaptive valve control system for an impact device
Switch means on the frame of a forging device senses when the ram and piston enter a first zone of a pneumatic cushion during retraction to initiate timing. If a predetermined time has expired...
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4116122 |
Hydraulic driven press
A hydraulic driven press for embossing, bending, stamping, especially fine or precision blanking, comprising a plunger or ram guided in an upright or stand. The plunger or ram is supported at the...
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3841125 |
CONTROL DEVICE WITH HYDRAULIC SYNCHRONISING CONTROL FOR FORGING MACHINES
A control device for forging machines having a plurality of hydraulically actuated forging tools for reducing the cross section of a workpiece. In order to increase the forging accuracy the actual...
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3824821 |
OVERLOAD SAFETY DEVICE FOR THE DRIVE ELEMENTS OF PRESSES
An overload safety device for the drive elements of presses which includes an arrangement for varying the permissible pressure force on the ram of the press in dependence of the position of the ram...
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3818799 |
CONTROL SYSTEM FOR AN IMPACT DEVICE
A pneumatic ram has its blow intensity varied by varying the time of opening of a valve connecting a constant pressure fluid supply to the cylinder in order to vary the fluid pressure applied to...
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3718017 |
AUTOMATIC CONTROL SYSTEM FOR TUBE EXPANDER TOOL
An automatic control system for a tube expander tool of the type having a hydraulically powered rotary tool which is advanced and retracted by a reversible linear motor. Operation of automatic...
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3675451 |
EXTRUSION SYSTEM
A high pressure, high temperature extrusion apparatus generally includes a pressure means, such as a piston arrangement, for forcing an extrusion material such as a mixed metal powder, through a...
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3628227 |
METHOD OF EXPANDING TUBES
A tube expander apparatus and method for expanding heat-exchange tubing into pressure assembly with a header bore. Expanding power is supplied by hydraulically powered motive means supplied with...
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3481171 |
MULTIPLE OVERLOAD PRESS PROTECTION DEVICE AND ADJUSTABLE PRESS TONNAGE DEVICE
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3464315 |
MECHANICAL PNEUMATIC SERVO CONTROL SYSTEM FOR HIGH-SPEED IMPACT DEVICES
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3260084 |
Apparatus for drawing linear stock
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3260085 |
Wire drawing apparatus
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3258946 |
Control system for pipe bending apparatus
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3205790 |
Impact forming apparatus
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3193875 |
Extrusion press
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3194037 |
Pneumatic control system
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3192751 |
Indicators
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