Abstract: An apparatus and method for controlling a stroke of a cylinder-type press machine in which a forming process control pattern comprises a pressurizing interval in which a ram of the press is maintained at its bottom position at a constant pressure for a fixed time. Accordingly, warp and distortion of a workpiece due to a spring-back of the workpiece is suppressed. Another feature of the present invention is that either the punching or forming process can be accomplished by selecting a specified pattern for various types of control patterns stored in a punching process control pattern storage section and a forming process control pattern storage section.

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: Portable manually-controlled pipe-bending machine designed for operation at three different speeds, consisting of a boxlike main body, which in its simplest form contains two gear assemblies i.e.: a speed reducer with cooperating gears mounted on three parallel axes, corresponding to three different speeds which are obtained by fitting a conventional handle or any other appropriate structure into a socket driving a gear shaft, and thus making the reduction gear rotate at the desired speed; and a transmission mechanism which is connected with the output gear of the speed reducer and which transmits to a gear train up to the final gear to turn the main driving shaft integral with it and mounting the bending member or matrix.

Abstract: A control system for automatic counterbalancing the ram of a mechanical press by measuring energy level of the press flywheel and varying air pressure in a counterbalancing cylinder. Energy level is derived from a measurement of the linear speed of a moving press component at a fixed point in the ram reciprocation cycle.

Abstract: A press for performing a work operation on a workpiece including a yoke defining a central bore, a ram mounted for reciprocal movement in the bore and carrying a fabricating tool on one end of the ram, an electric motor secured to an end wall of the yoke and having an output shaft passing through the end wall of the yoke, a ball screw driven by the output shaft of the motor and positioned in the bore of the yoke, a ball nut mounted in the bore on the ball screw, and a force multiplying mechanism interconnecting the ball nut and the ram and operative to move the ram to a preparatory position and thereafter multiply the force applied to the ram to facilitate the performance of the work operation.

Abstract: A novel press load monitoring system for a variable speed press which is capable of automatically adjusting the measured load level of the press so as to compensate for strain in the press frame produced by mechanical vibrations occurring as the speed of the press is varied.

Abstract: An operating head (24) carrying a hammering element (28) is introduced into the interior of the workpiece at a position where the workpiece, as measured by a measuring instrument (49,50) shows maximum deviation from the axis of rotation of the rotation symmetrical body. The hammering element is controlled to hammer against the inside at a rate which depends on the distance of deflection and/or the position thereof, during rotation, or longitudinal movement of the workpiece with respect to the operating head, for example by controlling a potentiometer (19) by an eccentric control disk (16) which has its maximum eccentric deflection of position in line with the maximum eccentricity, or deflection of the workpiece (7) from the axis of rotation. The apparatus can also be used to remove dents and the like, by hammering against the dent and longitudinally shifting the workpiece with respect to the hammering element.

Abstract: A machine and method for roller swaging hydraulic fitting sleeves onto metallic tubing comprises a tapered roller mandrel expander driven at a first high speed for rapidly expanding the tubing and at a second low speed until the drive torque reaches a final preselected value for preventing springback of the tubing and accurately controlling the amount of swaging. A torque transducer monitors mandrel loading for automatic control of machine operations. The machine provides an automatic swaging cycle inserting the expander, engaging the tapered mandrel, rotating the mandrel at the high and low speeds, reversing rotation of the mandrel for disengagement of the expander, and withdrawing the mandrel and the expander. Tare torque is measured in each swaging cycle, compensating for changing mandrel bearing drag, etc.

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: A method of controlling a press having a slide mechanism mounted for reciprocating movement, a press drive for cycling the slide mechanism and including a press drive shaft and a mechanism for driving the shaft at a controllable angular velocity, and an automated feed mechanism for transferring workpieces in and out of at least one work station in the press in synchronism with the reciprocating movement of the press slide, the method comprising the steps of driving the press drive shaft at a first, relatively fast angular velocity during a "closed" portion of each cycle of reciprocating movement of the press slide, the "closed" portion of each cycle including that portion of the cycle during which the press slide is working one or more workpieces, and driving the press drive shaft at a second angular velocity, slower than the first angular velocity, during an "open" portion of each cycle of reciprocating movement of the press slide, the second angular velocity being sufficiently slow to allow the automatic fe

Abstract: The device is applicable to a cutting and pressing machine, in particular to a machine for continuous cutting and cold pressing of material supplied in the form of wire, a machine that comprises: rolls (7,7'-7",7'") for feeding of the wire (2) and a press slide (3) with press punches. The device provides that these known elements (A) are made to operate in opposition and synchronization with respect to other elements (B) which are opposite and equivalent in mass and distance of travel with respect to a common center (C). In this way a total stability of the machine is achieved with the consequent possibility of increasing the speed and therefore hourly production with respect to known machines, of pieces, such as screws, bolts and the like.

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 edger mill having a pair of edging rolls mounted for variable positioning apart from each other is powered by a plurality of electric motors driving the rolls from above, having a long shaft extending upwardly from each roll, with a bull wheel connected to each shaft in driving relation, each bull wheel having two or more electric motors connected thereto in driving relation by respective pinions. Synchronization between the edging rolls may be effected by mounting the bull gears in mutual intermeshing relation, or by using synchronous motors so that the common bus supply to the motors constitutes a synchronizing agency to maintain the edging rolls in synchronized relation.

Abstract: A press, comprising a frame supporting an upper and lower bed for attachment of an upper and lower bolster, the upper and lower bolster each carrying mating halves of a complementary die, and the upper bolster having a knock-out opening therethrough, a hydraulic knock-out means carried by a drive means above the upper bolster that is adjustably electro-mechanically timed to cooperate with pins internal to the upper bolster to eject any work that may have remained in the upper die upon separation of the two mating die halves.

Abstract: A control system for a hydraulic punch press is adapted to dissipate the energy stored in a hydraulic actuator so that the punch will exit the workpiece without substantial release impact. The control system includes a signal generator for producing a progressively increasing command signal while the punch penetrates the workpiece, a position transducer for producing a negative feedback signal indicating the actual punch position during such penetration, and a summing point for supplying the difference between the command and actual signals as an error signal to a servovalve used to control operation of the actuator.

Abstract: A method of and an apparatus for forming by frictional heat and pressure a bossed hole in a metal plate or a tube wall with the aid of a rapidly rotating piercing tool, of which the axial feed is controlled, in such a manner, that during a predetermined time from the point of time, at which the tool comes into contact with the plate or tube wall the axial movement of the tool is slower and after that time said movement is faster than a movement of given speed.

Abstract: A method and apparatus of cold forming is disclosed for improving die life. During a first phase a workpiece is initially engaged between a pair of dies with a sufficiently low force and velocity level to reduce die errosion but with a sufficiently high level to produce limited deformation of the workpiece and provide an area of mating engagement between the workpiece and the tool and die. During a second phase the workpiece is subjected to substantially higher deforming force and velocity levels and is further deformedto the desired shape. Such area of mating engagement is sufficiently large to reduce errosion producing localized pressures on the tool and die during such second phase. The disclosed machine is a ball header with the movable die mounted directly on the machine frame rather than on the reciprocating slide. The position of the movable die is controlled by a cam driven pusher so that the movable die position is independent of the position of the reciprocating slide.

Abstract: Apparatus comprises a tool member (U) such as a sonic transducer, a fixture (F) for a workpiece, an anvil member (A), one of the members being stationary and the other being movable toward and away from the stationary member, a carriage (31) for the movable member, first means such as a piston rod (49) for holding the carriage up in ready position, second means such as a valve (VI) for releasing the first means to cause the carriage to descend to the workpiece, and third means such as a piston rod 51 for retarding descent to a velocity less than the free fall gravitational velocity. An automatic control system comprises sensing means, control relays and timing relays for activating the movable member, for energizing the tool member, for timing the period of energization, and for assuring dwell of the movable member in contact with the workpiece after the tool is deenergized.