Abstract: A forging machine (1) comprises at least two forging punches (5) acting against each other and longitudinally guided in a machine frame (2), which each have separate stroke drives (9) and stroke position adjusting means (10). To make the forging machine (1) suitable for a large forging range with a simple design, each forging punch (5) together with longitudinal guideway (8) and stroke position adjusting means (10) and the associated stroke drive (9) are combined to a forging unit (3) and disposed in a separate housing (7), which is pivotally or movably mounted in the machine frame (2) and for adjustment is supported on an actuator (11).

Abstract: A terminal crimping device includes an elevating crimper for crimping terminals onto exposed conductors of cables and an anvil positioned opposite to said elevating crimper so that the ascend/descend of the crimper is carried out by a servo motor. The terminal crimping device further includes a height sensor for outputting a crimp height at the time of crimping said terminals, a data storage unit for storing a pressing time range for determination on whether or not terminal crimping is normal and a crimper height value for determination of said pressing time; and determining unit for time measuring the time during which an output from said height sensor is not larger than the crimper height and determining that crimping is normal if the measured time is within said pressing time range. Thus, the determination on whether or not the terminal crimping is normal can be surely made.

Abstract: A brake time measurement and brake control system measures the brake time of a subassembly, such as an upper die of a press, with the programmable controller already used to control the press. The programmable controller has a selectable time interrupt which causes an interrupt routine inside the programmable controller to be executed at regular time intervals. By varying the duration of the interval, the precision of the brake time measurement may be varied. Also, since the system is implemented with the programmable controller already present on the press, no additional equipment is needed to measure brake time. The brake time monitor and brake control system also implements a top stop control capability with improved precision. The improved precision results from dynamically determining a top stop zone which is appropriately sized given the speed of the die.

Abstract: For controlling the stroke frequency of a forging machine (1), which comprises a mechanical stroke drive (3) for the stroke movement of the forging punch (2) and a hydraulic drive connection (4) between stroke drive (3) and forging punch (2), the rotational speed of the stroke drive (3) is adjusted to a high stroke frequency of the forging punch (2), and for reducing the stroke frequency the hydraulic pressure of the drive connection (4) is decreased for periodically succeeding drive strokes in accordance with the drive-related increase with constant rotational speed of the drive (3), while at the same time the forging punch (2) is preferably blocked in the vicinity of the upper dead center. For this purpose, the drive connection (4) is connected to an accumulator (20) via a control valve (23) to be actuated in dependence on the stroke movement.

Abstract: A press brake for bending a work sheet wherein an upper tool holder is mounted at a lower end of a ram to mount an upper tool and a bending angle of a work sheet is determined by three points of spaced shoulders of a lower tool and a lower tool bottom. The press brake includes a group of pins as pressure transmission members, arranged at symmetrical positions from a machine center line in the upper tool. A space is provided between the tops of some of the pins and a press block. A series of spacers is mounted on a chain mechanism for putting the spacers into and out from the space between the press block and the pins. The effective length of the upper tool is automatically changed corresponding to the bending length of the work sheets so as to achieve an efficient bending of various length work sheets and preventing unequal bending.

Abstract: An apparatus (10) is disclosed for holding and actuating a terminal applicator (20) in the attachment of terminals (28) to the ends of electrical wires. The apparatus includes a frame (12) that supports a conventional terminal applicator (20) and a crankshaft (58) journaled in the frame. A crank arm (44, 44') has its lower end (96, 96') eccentrically coupled to the crankshaft and its upper end (104, 104') coupled to the ram (34) of the terminal applicator. A motor (78) rotates the crankshaft, eccentrically moving the lower end (96, 69') of the crank arm, which causes the upper end (104, 104') of the crank arm to move the applicator ram vertically, thereby actuating the terminal applicator (20).

Abstract: A positioning system which mounts onto or in front of a hydraulic press brake or other machinery to reposition the operator controls of the machine laterally and/or longitudinally with respect to the machine. Embodiments are presented which move the foot-operated control pedals and the hand-operated tonnage controller of a hydraulic press brake. In various embodiments, the system is powered by a pneumatic cylinder, a pneumatic motor or an electric motor. Manually actuated switches allow the operator to move the control pedal and/or the tonnage controller to selected positions. A programmable control system and a remote control unit are provided for alternate modes of operation.

Abstract: The invention relates to forging machines which are provided with in particular four rams which are arranged offset at 90.degree. to one another in a cruciform manner in one plane, act radially upon the workpiece, guided longitudinally in the system axis, and are equipped with tools. Piston-cylinder units provided for driving the rams are dimensioned for the entire stroke of the rams. The object of the invention is a simple, secure setting of the stroke-end position of the rams corresponding to the current tool setting or width. This object is attained in that the stroke of each ram (2) or the cylinder (4) connected to it can be limited in the inner stroke-end position by displaceable stops (17, 18, 19) arranged between the machine frame (1) and a projection (14b) on the ram (2) or cylinder (4).

Abstract: 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 machine which carries the tools on an arm pivoted by an actuator. In the preferred embodiment, the control system includes a control circuit which continuously senses the position of the arm by use of a pulse generator rotary encoder. The control system stores settable initial and final stroke positions for each of the tools. The actuator is controlled to move the arm and the tools carried thereon.

Abstract: An electrical terminal applicator includes an applicator ram drivable by a press ram through a working stroke towards, and a return stroke away from, a crimping anvil. A first crimping die is mounted on the applicator ram for cooperation with the anvil to crimp a first portion of an electrical terminal onto the insulation of an insulated electrical wire during each working stroke of the applicator ram. A second crimping die is mounted on the applicator ram for cooperation with the anvil to crimp a second portion of the terminal onto a conductive core of the electrical wire during each working stroke of the applicator ram. A first adjusting plate is mounted for rotation about an axis on and extending in the direction of movement of the applicator ram and includes a concentric ramped striking surface for engaging a striker surface operatively associated with the first crimping die, to adjust the shut height of the first die in response to rotating the first adjusting plate.

Abstract: An index-feed machining system having such a construction that a plurality of machining units on which a cassette incorporating a plurality of machining tools detachably mounted are disposed at intervals of mp (m being a given positive integer, p being a workpiece-feeding pitch) in the workpiece-feeding direction corresponding to a plurality of machining processes. The machining processes being sequentially performed by the machining units at the workpiece-feeding pitches, in which driving devices for driving the machining tools are provided in the cassette comprising a plurality of machining units, and the driving force of the driving devices of a particular machining unit is made larger than the driving force of the driving device of other machining units.

Abstract: A terminal crimping machine provided with an applicator having a crimper for crimping a terminal to a wire and an anvil, comprising: a frame; a cylinder fixed to said frame and having a rod, said cylinder for moving the crimper up and down and; a bumping member fixed on the rod of said cylinder; a height adjusting plate having a gradually changing height provided on said frame oppositely to said bumping member; and driving means for sliding said height adjusting plate in a direction orthogonal to said rod. Thus, the terminal machine can automatically adjust the crimping height of a terminal in accordance with its kind.

Abstract: A method of distributing rotational power from a common drive shaft assembly to two or more stamping and forming modules is disclosed. The method includes shortening the length of stroke of the ram assemblies of selected modules thereby permitting them to achieve higher working forces at their stamping and forming tooling than other modules whose ram assemblies have a longer length of stroke.

Abstract: The shut height of a crimping die set (9) for crimping an electrical terminal (T) on an anvil (22) to a lead (L) is adjustable stepwise by means of a disc (60) which can be driven by a servo motor (M1) to a plurality of angular positions each setting a theoretical ideal shut height for a particular combination of lead and terminal sizes. Since anvil wear, in particular, and/or minor variations in lead and terminal dimensions can falsify the ideal crimp height set, the actual crimp height achieved, is measured electronically or mechanically, and the height of the anvil (22) is automatically adjusted in accordance with such measurement, by means of a further servo motor (M2) to adjust the shut height of the die set (9) and anvil (22), so that the ideal shut height is achieved.

Abstract: A shut height adjustment device is provided for a press having press and tooling rams coupled in spaced relationship during a forward stroke of the press ram. The adjustment device includes a carrier defining a rotation axis and a plurality of apertures concentric with the rotation axis. A plurality of spacers are removably held in the plurality of apertures. Each of the spacers extends parallel to the rotation axis between a pair of opposite end surfaces which accurately define a length of each of the spacers. Different ones of the spacers have different lengths. The carrier is rotatably mountable on a post coupled between the press and tooling rams such that the different ones of the spacers may be selectively disposed between the press and tooling rams for engagement by opposed contact portions of the rams during the forward stroke of the press ram.

Abstract: Stamping and forming machine having reciprocable rams which move towards and away from each other between open and closed positions having adjustable eccentrics for adjusting the strokes of the rams. The rams are reciprocated by oscillating levers which are coupled to a power shaft by eccentric assemblies. Each eccentric assembly has a fixed eccentric on the power shaft and an adjustable eccentric which is rotatable, for adjustment purposes, with respect to the fixed eccentric thereby to change the stroke of the associated ram assembly.

Abstract: The shut height of a crimping die set (9) for crimping an electrical terminal (T) on an anvil (22) to a lead (L) is adjustable stepwise by means of a disc (60) which can be driven by a servo motor (M1) to a plurality of angular positions each setting a theoretical ideal shut height for a particular combination of lead and terminal sizes. Since anvil wear, in particular, and/or minor variations in lead and terminal dimensions can falsify the ideal crimp height set, the actual crimp height achieved, is measured electronically or mechanically, and the height of the anvil (22) is automatically adjusted in accordance with such measurement, by means of a further servo motor (M2) to adjust the shut height of the die set (9) and anvil (22), so that the ideal shut height is achieved.

Abstract: An apparatus for use with a press which corrects the spacing between an upper die and a lower die when the press is at bottom dead center. The apparatus includes a detector which is operative during each cycle of reciprocal movement of the press slide to detect the spacing between the upper and lower dies, a comparator which compares the detected spacing during each cycle with a prior spacing, an axially expansible/contractible piezoelectric actuator mounted on the press so that its axial length affects the spacing between the upper and lower dies when the press is at bottom dead center, and a drive circuit which is responsive to a deviation signal from the comparator to drive the actuator with a high voltage so as to expand or contract its axial length according to the difference between the detected and prior spacing of the dies.

Abstract: The press is of the type including a pair of tool holders mounted in a frame and carrying cooperating tools (die and punch). At least one of the tool holders is motor driven and is movable towards the other tool holder. According to the invention, the press includes a first driver arranged to make one of the tool holders travel a fairly long distance towards the other tool and a second driver, distinct from the first, for making this same tool holder or the other tool holder perform, a subsequent, fairly short working stroke to bend the sheet metal and to effect any coining of the bend. Preferably both of the tool holders are movable, the second driver being arranged to make the respective tool holder complete a fairly short bending stroke, and the press includes a third driver, distinct from the first and second, arranged to make the same tool holder and the other tool holder complete a vertical stroke for coining the bend.

Abstract: A method for automatically adjusting die height in a press having a plurality of dies aligned in a work transfer direction includes a load pattern setting member for inputting possible load patterns, each pattern corresponding to the number of dies under load. A correction setting member is provided for inputting an amount of correction (compensation) by which the position of the bottom of the slide in each load pattern is rectified to a basic position corresponding to a basic load pattern. A pattern identifier is provided for identifying the current load pattern when the slide is at a given position. A correction controller is provided for selecting the proper amount of correction of the position of the bottom of the slide for the identified load pattern and sending a drive control signal corresponding to this amount to a slide position adjustment unit.

Abstract: A crimp height adjusting mechanism in a machine for crimping terminals onto the ends of conductors of flexible flat cables. The adjusting mechanism is interposed between the movable crimping die and its drive mechanism and effects changes in crimp height by varying its length. The adjusting mechanism utilizes a sliding wedge block that causes a followed member to extend or recede a desired amount. An adjusting screw controls the sliding movement of the wedge so that very precise changes in crimp height can be achieved.

Abstract: A device for automatically adjusting die height in a press having a plurality of dies aligned in a work transfer direction includes a load pattern setting member for inputting possible load patterns, each pattern corresponding to the number of dies under load. A correction setting member is provided for inputting an amount of correction (compensation) by which the position of the bottom of the slide in each load pattern is rectified to a basic position corresponding to a basic load pattern. A pattern identifier is provided for identifying the current load pattern when the slide is at a given position. A correction controller is provided for selecting the proper amount of correction of the position of the bottom of the slide for the identified load pattern and sending a drive control signal corresponding to this amount to a slide position adjustment unit.

Abstract: A press machine slide stroke adjusting apparatus comprises an eccentric sleeve connected to a slide and fitted over a circular eccentric portion of a crank shaft, first teeth provided on the eccentric sleeve and concentric to the circular eccentric portion, a main gear disposed on the crank shaft in coaxial relationship therewith, and second teeth meshing with the first teeth and provided on main gear coaxially with the crank shaft. The crank shaft is disconnected and connected from and to the main gear by coupling. A hydraulic actuator disengages the crank shaft from the main gear. The rotation of the crank shaft disconnected from the main gear is prevented by engagement of a pin and an engaging hole in an engaging block. Under such conditions, the eccentric sleeve is turned relative to the circular eccentric portion to adjust a vertical stroke of the slide.

Abstract: An applicator ram (8) driven by a press ram (46) drives an insulation barrel crimping die (10) which is adjustable lengthwise of the rams (8) and a wire barrel crimping die (14) fixed to the applicator ram (8), to crimp electrical terminals (T) to leads (L) in cooperation with an anvil (22). A crimp height adjustment disc (60) is rotatable about a shaft (104) on the applicator ram (8) selectively to interpose first projections (76) on one side of the disc (60) between the press ram (46) and the applicator ram (8) to adjust the shut height of the wire barrel crimping die (14) and selectively to interpose second projections (82) on the other side of the disc (60) between the applicator ram (8) and the insulation barrel crimping die (10) to adjust its shut height.

Abstract: A method and device, for controlling a press machine, which creates an appropriate control pattern whereby high efficient processing is performed having low vibration and low noise and with operating efficiencies increased. This is accomplished based on the knowledge that the amount of vibration and noise are principles determined by the punching pressure. An appropriate punching velocity is selected from a table in accordance with a maximum punching pressure detected in a test punching operation, and then an appropriate control pattern of the stroke of a ram is created on the basis of the data detected in the test punching operation and the selected punching velocity.

Abstract: Crimping machine comprises a press and a terminal applicator. The applicator ram is coupled to the press ram and has movable crimping tooling adjustably mounted thereon. The fixed crimping tooling is mounted in the applicator frame which in turn is supported on the press platen. A coarse adjusting system is provided on the applicator ram for adjusting the position of the movable crimping tooling on the ram and a fine adjusting system is provided in the press platen for adjusting the position of the applicator frame and thereby adjusting the position of the fixed tooling. The fine adjusting system results in the achievement of crimped connections within more narrow tolerance limits than have heretofore been possible.

Abstract: In a multistep bending machine, a movable apron (LA) provided with a movable tool (D) is moved in a multistep manner up and down toward a fixed apron (UA) provided with a fixed tool (P) by a hydraulic system including a novel die-axis drive mechanism (DDM), when a foot switch (FS) is kept depressed.In addition, an interference prevention device (IPA), a bending speed determining device (SDA), a tool distance determining device (TDA), a backgage stopper positioning device (SPA), and a backgage stopper pull-back distance controlling device (PDC) are all incorporated in the bending machine to realize a full automatic multistep bending operation.

Abstract: The stroke position adjusting assembly adjusts the stroke position of a pressing rod for a ram of a forging press. The pressing rod is arranged between the crank drive and the ram and includes an eccentric bushing. Adapting pieces rest against the perimeter of the bushing and are connected to tie-rods operable by a piston cylinder unit.

Abstract: A safety power tool is described which is useful as a hardware insertion press. It includes a punch aligned slideably between an anvil and a short stroke power ram adapted to move the punch toward the anvil through a relatively short distance and a spacer movable to an opening between the ram and the punch to contact the ram at one end and the punch at the other end for transmitting the short stroke motion of the ram to the punch. A long stroke retraction actuator is connected to the punch for withdrawing the punch from the anvil when the spacer is moved laterally to an inoperative position to provide a relatively large clearance space between the punch and the anvil but with the spacer out of the way, the ram is rendered ineffective to apply pressure to the punch thereby preventing injuries.

Abstract: A controller and method are provided for controlling pneumatic presses, and similar machines. The controller comprises a gauge to measure increments of stock length passing through the press, a length recorder to set the desired piece length, and a length comparator which compares the readout of the gauge with the preset recorder piece length, and when equal, generates a stroke initiate signal. The stroke initiate signal opens an air valve portion of the pneumatic press to communicate pressurized air with the power side of an air actuated ram, which in turn converges the press platens to perform the desired press function, such as punching holes, notching, cutoff, or the like. The controller also includes a timer to measure time beginning from the stroke initiate signal, a time recorder to set the time the air valve is to remain open, and a time comparator which compares the readout of the timer with the preset valve open time, and when equal, generates a stroke halt signal.

Abstract: A system for automatically correcting the position of the slide of a press comprises a position adjusting assembly for adjusting the up-down relative position relationship between the slide and a bolster while the press is in operation, a distance detecting unit for directly or indirectly detecting the relative distance between the bolster and the slide at the bottom dead center, and a control unit for controlling the position adjusting assembly based on the output of the distance detecting unit so that the relative distance between the bolster and the slide at the bottom dead center will be within a predetermined range during the operation of the press.

Abstract: The present invention relates to a press machine that has a vertically movable ram for supporting upper or lower bending tools, said ram being integrally provided with an operation member, and a position determining member having an adjustable position located at a suitable point on said press machine such that when the operation member on the ram contacts the position determining member, the vertical movement of the ram is stopped. The press machine further includes a screw mechanism that is screw-coupled to the position determining member and is movable in an axial direction, a pulse motor drive unit which turns the threaded bolt, and a manual pulse generator for operating the pulse motor from a remote location.

Abstract: An apparatus for automatically crimping terminals to electric wires by a cooperation between a pressing punch driven through a press ram and a stationary anvil. The apparatus has a crimp height adjusting mechanism which includes a tapered spacer movable perpendicularly to the press ram, a stopper member having a complementary tapered surface and slidably placed on the tapered spacer so as to be able to move only vertically as the tapered spacer is moved. The stopper member has an upper surface adapted to be contacted by a portion of the press ram thereby determining the stroke end of the press ram. The tapered spacer is slidingly moved in a controlled manner by an electric motor, so that the heightwise position of the stopper member is changed to allow a delicate adjustment of the lower stroke end of the press ram. In consequence, the crimp height is automatically adjusted minutely in accordance with the diameter of the electric wire to be processed.

Abstract: A die-assisted squeeze-forming apparatus, for bending hooks of a plate against a container e.g. a tank, is able to be used with various shapes of the plate and container without replacement of the die structure. To that end, the apparatus is provided with a calking die structure which has a plurality of divided, relatively movable dies, each movable die being subject to being individually actuated by an actuator. The preferred embodiment of the apparatus also includes a controlling means which controls the movement of the actuators and a detecting means which detects a feature of the tank which is symbolic of the size and shape of that tank. The electric signal which indicates the feature of the container is applied to the controlling means. Then the controlling means sends a respective controlling signal for controlling the movement of the actuators in order to cause an adequate rearrangement of the shape of the calking die structure should the tank be different in size or shape then the preceeding one.

Abstract: A press machine adapted for the production of many different types of products in limited quantities. The press machine comprises a plurality of lower dies mounted on a bolster and a plurality of upper dies each mounted to a slide facing to the respective lower dies. Each upper die is mounted to the slide by means of a die clamper via an adapter plate and each upper die is biased upwards by coil springs so that a predetermined gap exists between each pair of upper and lower dies when the slide is moved down to a bottom dead center. An activating plate can be insertable between the slide and each adapter plate so that the activated upper die is allowed to make contact with the opposing lower die.

Abstract: An upsetter of the horizontal type which has in a horizontal row a plurality of split dies which include upper movable dies and lower fixed dies each having a clamp die section and an upset die section, the upsetter including a number of piece dies separately constituting the clamp die sections of the movable dies and hydraulic cylinders for operating the clamp die sections independently of each other.

Abstract: Disclosed is a forging press including an automatic rolling key die lock comprising a forging ram and a forging frame including a die socket with an inner sidewall slot. A die, preferably comprising a split ring die, is received in the die socket and includes a mating slot for mating alignment with the press sidewall slot. A rolling key is received in the sidewall slot and the mating slot comprising an elongated bar including an intermediate undercut portion and a connecting member eccentrically secured to one terminal end of the bar. A lever is operatively engaged at one end to the connecting member for rotation of the rolling key upon selective operation of the lever, and operatively engaged at a second end to the ram for operation of the lever upon selective advancement and retraction of the ram.

Abstract: Crimp connection equipment includes means for positioning a crimp height controlling eccentric shaft in virtually an infinite number of different predetermined angular positions and virtually continuously monitoring the actual instantaneous position of such shaft. In addition, a universal wheelfeed for feeding a connector strip and selectively replaceable means for guiding such strip are disclosed.

Abstract: A friction shock absorber comprised of a plurality of mating friction surfaces in constant contact together is incorporated on an oscillating member of the valve shifting mechanism of a forging hammer for preventing the valve from bouncing away from its intended position after it has been shifted by the motion of the forging hammer ram.

Abstract: A bending brake with an elongate horizontal blade lowerable onto a V-shaped ie has a fixed bed supporting the die and a pair of parallel hydraulic cylinders with pistons carrying the blade, the cylinders being mounted on brackets rising from the bed above the die. The admission of hydraulic fluid to the cylinders is controlled by electrically operated valves responsive to limit switches as well as a pair of mechanical valves, the latter being disposed close to the ends of the die on the fixed bed and being respectively operated by pins mounted on the vertically reciprocable blade in order to stop the descent of the corresponding piston in a predetermined but adjustable bottom position. The return stroke of the blade is not started until both mechanical valves have thus been operated, thereby ensuring that a workpiece of sheet material between the blade and the die is bent about a crease line having the proper orientation.

Abstract: An improved radial or parallel press includes a hydraulic control valve and cylinder for each jaw or foot of the press and a corresponding plurality of valve control cams which move together to actuate the control valves in synchronism.

Abstract: Method involves programming crimp connection equipment to automatically and sequentially establish a plurality of desired different connection configurations. Information representing a series of desired connection configurations is transferred to a control means. Such information is carried by a card that also illustrates a desired final stator assembly configuration. An operator sets thumb wheel switches so that digital information on the card is entered into a control panel. The control means automatically sequences and conditions the apparatus to establish different connections. The card both directly controls machine operation and also is used as a process control card. Also disclosed is a means for positioning a crimp height controlling eccentric shaft in virtually an infinite number of different predetermined angular positions and virtually continuously monitoring the actual instantaneous position of such shaft.

Abstract: A preprogrammed microprocessor controlled apparatus for controlling automatic wire crimping equipment. The equipment disclosed is adapted to perform, in automatic sequence, a plurality of wire crimping steps on a dynamoelectric machine such as a motor. A wide variety of crimp height settings is selectively inserted by the equipment operator to achieve optimum crimp height for each crimp step to be performed. The crimp height setting mechanism includes an eccentric cam positioned by means of a pulse operated stepper motor with correct positioning indicated by a feed back pulse train from the cam shaft position encoder which pulse train is compared with the input information established by the equipment operator. Automatic and semi-automatic sequencing modes of operation are provided as determined by input selections established by the equipment operator.

Abstract: This invention relates to a method and apparatus for adjusting a stroke length of a ram for a press. The stroke length of the ram is adjusted with respect to a base point. The hydraulic pressure level in the acting chanber is also adjusted. The press is generally used for bending metal sheets. By this invention, an optimum stroke length of the ram in the press can be easily determined without experimentally processing and, therefore, wasting sheet metal workpieces.

Abstract: A pair of hydraulic stabilizing cylinders are supported on a common frame parallel to the main pneumatic drive cylinders driving counter-blow hammer impellers. The stabilizing piston within each stabilizing cylinder is connected to its adjacent impeller. Those ends of the respective stabilizing cylinders adjacent the impeller are connected to the opposite ends of the other stabilizing cylinders by fluid filled hydraulic lines. Because the cylinders and pistons are the same size, as the impellers move, fluid is transferred from one end of each cylinder to the other end of the other. However, should the impellers not move in synchronism toward their point of impact, that impeller tending to move ahead of the other will experience resistance from the fluid in the stabilizing system which tends to keep the impellers in step. In addition, means is provided to detect differences in position of the synchronizing pistons.

Abstract: A drive of a hydraulic screw press comprises a power cylinder incorporating a movable member connected with the press slide. A limit switch actuated by the downward travel of the slide opens a shutoff valve which permits fluid to flow through an adjustable flow-restrictor to actuate the piston of a pneudraulic cylinder within a preset time period determined by the adjustment of the flow restrictor. At the end of the preset time period, the rod of the piston will have traveled a distance sufficient to actuate a limit switch to control a valve arrangement for discharging the pressure in communication with the power cylinder. The slide is returned to the initial upper position by a cylinder under a constant pressure.

Abstract: A control and actuator system for a press brake having a frame, a bed, a ram, and a pair of hydraulic cylinders for reciprocating the ram, utilizes a jackscrew arrangement in conjunction with positive mechanical stops on the ram pistons to support the ram beneath the cylinders to enable the bottom travel limit of the ram to be preset. The top travel limit of the ram is preset by means of vertically adjustable actuator rods on the ram, which engage actuator stems on valves associated with each cylinder to stop upward travel and hold the ram in position. Tilt compensation is provided at the top and bottom ram limits by independent adjustment of the jackscrews and actuator rods, obviating the need for a complex tape and pulley driven differential valve arrangement. The novel hydraulic circuit provided for powering the cylinders utilizes pilot-driven control valves, and provides for direct venting of the system high-volume hydraulic pump when not in use to maximize system efficiency.

Abstract: An impact shaping apparatus is provided having a hydraulic actuator associated to the shaping tool. A gas spring of adjustable spring constant is in permanent fluid connection with the hydraulic actuator so as to allow for adjustment of the impact characteristics in accordance with the cold-working characteristics of the material to be shaped. The gas spring is formed by a cylinder and a floating piston arranged therein and defining a first working space communicating with the hydraulic actuator and a second working space containing a mass of gas.

Abstract: This case discloses a forging press having a pump ram inserted into the upper part of a cylinder within a frame, a press ram into the lower part thereof, and a cavity filled with working oil provided between both parts of the cylinder for transmitting the mechanically given reciprocating motion of the pump ram to the press ram by the working oil, said forging press comprising a stopper provided outside the frame for mechanically controlling the upper limit position in reciprocating motion of the press ram and enabling an adjustment of the position where the stopper and corresponding portion of the press ram come into contact with each other, from outside during operating the press, wherein a controllable check valve for open-and-close operation is provided in the middle of oil passage which communicates with working oil supply source and working oil in the cylinder, for feeding or discharging oil into or from the supply source therethrough according to shortage or excess of oil quantity in the cylinder result

Abstract: Method of making at least two different electrical interconnections with at least two wires extending from windings supported on a dynamoelectric machine core. The method includes moving the core, windings, and at least two wires toward a wire connecting device; orienting and positioning a first one of the at least two wires relative to the device; and thereby conditioning the device to establish a first one of at least two different connection configurations. A first electrical interconnection involving a first wire and having a first connection configuration is formed. A second winding lead then is oriented and positioned relative to the device, thereby to condition the device to form an interconnection having a second connection configuration, and such interconnection is made. Indicia that indicate the relative orientation of the stator assembly (or parts thereof) are utilized to condition the device to establish connections of desired different configurations.