Abstract: The walking beam assembly of the forging presses operates in several movement phases including a lifting movement, advance movement, lowering movement, opening movement, return movement, and closing movement. Step motors control driving members which perform individual moving processes in the individual movement phases. In turn, driving member processors drive the step motors by frequencies changing with time. When the velocity or frequency of the step motors are plotted on the ordinate of a graph and time along the abscissa of the graph, a trapezoidal graph form is produced along the time (t) line of the graph for each of the movement phases. Each trapezoidal form includes a rising flank and a falling flank with some of the flanks for adjacent driving member phase movement overlapping in time. The opening and return movement phases form a fixed cycle having a length predetermined and constant for all cycle lengths.

Abstract: A multi-ram forging assembly has a piston-cylinder unit for driving each ram carrying a forging tool wherein at least two diametrically opposed forging unit simultaneously act on a workpiece. Each piston-cylinder unit comprises a pressurized inlet chamber for containing a hydraulic pressure fluid at a predetermined pressure behind a piston movably disposed in the cylinder. The piston includes a front-end ram carrying a forging tool. A valve including a valve seat member is disposed on the piston at a rear side opposite to the front-end ram. A valve cone cooperates with the valve seat member to provide a closed position and an open position for the valve. An actuator is connected to move the valve cone between the closed and open positions. The piston includes a passage bore extending from the valve seat member to a pressure fluid discharge chamber connected to a hydraulic pressure fluid reservoir container providing a pressureless discharge of the pressure fluid medium.

Abstract: The lifting beam assembly for transporting workpieces from work station to work station in a forming press includes a pair of transport beam members for grasping workpieces to be transported within the forming press. A first drive mechanism executes vertical movement to raise and lower the transport beam members. A second drive mechanism executes longitudinal movement of the transport beam members in a direction parallel to the direction traveled from work station to work station. A third drive mechanism executes transverse movement of the transport beam members. Each of the three drive mechanisms include movement actuating devices for effecting the respective vertical, longitudinal and transverse movements. An actuating shaft is secured at one end thereof for hydraulic actuation by an electro-hydraulic booster. It is coupled at the other end thereof to the movement actuating device for effecting the particular respective movement of the transport beam members.

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 forming machine comprises an eccentric drive mechanism for executing a stroke movement of a displaceable ram mounted for movement on a machine frame. A ram-side ejector mechanism is fixed on the ram for expelling workpieces from a tool secured to the ram. The ram-side ejector mechanism includes a longitudinally displaceable ejector pin, a two-armed lever member pivotally supported by the ram and cam disks mounted on a rotatable cam shaft. The cam disks are effective to pivotally displace the lever member for causing the longitudinal displacement of the ejector pin member. The rotatable shaft carries the cam disk mounted on the displaceable ram with the lever member. A gear linkage mechanism includes a rotational transfer shaft mounted to the machine frame for driving the cam shaft in response to operation of the eccentric drive assembly.

Abstract: The assembly and the invention accomplishes a method for forging work-pieces by drop forging. The method comprises the steps of providing a blank having a given volume of material corresponding at least to the volume of the work-piece to be produced. The drop forging assembly includes a swage having cooperating swage portions corresponding at least to the length of the work-piece to be produced. The blank is first forged along a predetermined portion of its length between the cooperating swage portions. Then, the remaining section of the blank is transported to the otherside of the same swage and forged between the cooperative swage portions. Devices are provided at either side of the operational faces of the swage so that a continuous movement of blanks, partially forged work-pieces and finished work-pieces may be effected in a continuous manner.

Abstract: An apparatus for producing blanks from a web including a pair of relatively movable upper and lower blades for severing therebetween blanks from a web along a predetermined cut line established by cooperative cutting edges of the blades, an end feed path of travel for the web and a discharge path of travel for the blanks, a mechanism for rotating the blades to selectively vary the cutting angle and thereby vary the sizes, shapes and/or cut line orientation of the blanks severed from the web, a transfer mechanism for transferring each severed blank from a position adjacent the blades and the end feed path of travel to a second position at the blank discharge path of travel, the transfer mechanism including a receiving element pivoted to an arm which in turn is pivoted for movement in a generally horizontal plane, the receiving element be accommodated in a recess adjacent the blades and receiving therein each severed blank for transfer to the discharge path of travel.

Abstract: The invention is a shifting mechanism for a screw press. The screw press includes a shifting coupling for the press spindle, a drive mechanism for continuously rotating a flywheel, a coupling mechanism operatively located between the flywheel and the shifting mechanism which is dependent upon angular deceleration and is controlled for the purpose of actuating the coupling mechanism. The shifting mechanism comprises a hydraulically actuatable shifting coupling. A hydraulically prestressed valve is located between the reaction mass and a rotating coupling portion that is connected to the flywheel. The coupling mechanism is controlled through the use of a hydraulic line and the prestressed valve is affected by the hydraulic pressure medium in that line acting upon the coupling mechanism.

Abstract: The lifting beam manipulator assembly is used for transporting workpieces in a forging press having machine tools. The assembly comprises a lifting beam including a carrier that is movable forwards and backwards and has workpiece grasping means. The grasping means includes a pair of grab arms located at each of the machining positions. A control mechanism is provided for the lifting beam for controlling the movement of the carrier along a workpiece transporting path which includes movement in three axes which are perpendicular with respect to each other. The movement control mechanism includes a linear transport means for movement along each of the axes and individual drive assemblies for each linear transport mechanism for effecting each movement of the carrier in the three axes. A limit switch gear mechanism activates each of the individual drive mechanisms for the linear transport means.

Abstract: The assembly is used to guide a movably mounted stamper member in a hot forming machine wherein the guide surfaces located between the stamper member and the machine frame are disposed in an X-arrangement with respect to each other. The inclined angle of each of the guide surfaces is directed approximately to a common central point. Adjustable ledges or strips are fitted to the guide surfaces for setting the clearance between the stamper member and the machine frame. Stamper side carrier rails and support side carrier rails carry the guide surfaces and are directly formed as a part of the stamper member and the frame or frame stanchions. The adjusting strips used for setting the clearance and the securing means for these strips, run approximately parallel to the guide surface. Thus, the stamper member is directly supported on the surfaces of the machine frame.

Abstract: The die ejector assembly is for multi-stage forming machines having each forming station provided with a die ejector that is separately adjustable as to its extent of lift. The ejector assembly comprises an ejector pin, an ejector lever member and a drive means for the ejector lever member. An intermediate lever member is disposed between the ejector lever member and the drive means therefor. The intermediate lever member is common to several ejector lever members and has adjustable French curves associated with each forming stage. French curves have circular/tangential cam sections. The intermediate lever member includes means for adjusting the position of the cam sections.

Abstract: The assembly for blowing out and spraying dies in a forging press is particularly adapted both to automatically operating and hand operated drop-forging presses. The automatically operating drop forging presses have workpiece transport effected by a walking beam transport system. The blowing and spraying assembly comprises arms having nozzles disposed at the end thereof to be guided into the mold area of the forging press in a timed sequence while avoiding the movement of the press plunger and walking beam transport system when it is being used. The blowing and spraying assembly comprises a carrier means hinged to a four-bar linkage arrangement which has two levers and a carrier member. In a specific embodiment, the ends of the two levers facing away from the carrier member are pivotably mounted to a housing. The housing constitutes a carrier support means secured to the stator of the forging press.

Abstract: A work handling assembly deposits a workpiece travelling from a pick-up point to a deposit point in the die space of a drop-forging press. The assembly comprises a pincer assembly mounted on a hinged quadrilateral mechanism to move between a workpiece pick-up station and a workpiece deposit work station. The hinged quadrilateral mechanism is driven by a crank gear assembly and includes one fixed side portion and two hinged side portions movably mounted to the fixed hinged side portion. The pincer assembly is rotatably connected to the free ends of the movable hinged side portions. Each of the movable hinged portions include a lever member with one of the lever members being longer than the other lever member. The longer lever member is rotatably connected to a front portion of the pincer assembly.

Abstract: The article handling assembly includes a lifting beam having a support with a plurality of workpiece grasping members. The support is moved inwardly and outwardly with respect to the work stations of the forging press. A spraying mechanism is also provided to move inwardly and outwardly with respect to the work stations of the forging press. A control mechanism operates the movement of the lifting beam having the workpiece grasping members effecting movement from one work station to the next. The movement is effected along the length of the forging press work stations outside of the area of the work stations. The movement of the spraying mechanism into and out of the work stations is synchronized with the movement of the workpiece grasping members moving into and out of the work stations to initially grasp workpieces and then to release the workpieces in the next work station. These operations are effectuated while the forging press is in an open position.

Abstract: The invention relates to a process and a device for controlling the manipulator movements in a forming machine, in particular a hammer-forcing press, operating automatically in accordance with a workpiece program.