Abstract: A method for manufacturing a circular metal tank, from an elongated sheet of metal. The upper and lower longitudinal edges of the metal sheet are bent to produce a first “L” bend and a second “chair” bend, respectively. The sheet of metal is moved in a helical trajectory such that the second bend comes into proximity above the first bend. The second bend and the first bend are welded together such that the wall of the cylindrical tank is formed. Welding of the bends serves to stress relieve or anneal the bent metal, thereby preventing cracks in the metal which may result in leaks and/or compromise the structural integrity of the tank. The first and second bends additionally cooperate to form a helical roller track on the outside of the tank. The tank is supported and rotated about its longitudinal axis on a plurality of rollers that engage the roller track.

Abstract: A swage or crimp press has a housing with a peripheral side wall and a front wall integrally formed with the side wall, the front wall defining an access opening providing access to a press zone arranged within the peripheral side wall, the housing having an open rear face and a rear wall secured by fastening means to the peripheral side wall to at least partially enclose the rear face of the housing, and a hydraulically operated press mechanism located within the housing at least partially surrounding the press zone.

Abstract: The invention relates to a method for controlling a rolling process, in which a metal strip is rolled flat by use of at least one roller. It is known from the prior art that the relative position of a neutral point represents a measure of the instantaneous stability of a rolling process. However, traditional methods for calculating the position of the neutral point do not accurately represent the actual properties of metal and therefore have only limited usefulness for predicting the stability of a rolling process. In order to allow better control of a rolling process for rolling a metal strip with regard to the actual behavior of the metal strip, the invention proposes a new method for calculating the relative position of the neutral point, in which in particular the flat yield stress ke and the hydrostatic pressure pNH at the neutral point are incorporated.

Abstract: A method for improving the running-out of a metal rolled strip (1), the rolled trailing strip end (1a) of which exits out of a respectively last roll stand (2) of a multistand rolling mill (3) at a rolling speed, wherein during rolling between two consecutive roll stands (F1, F2, F3 . . . Fn) the strip tension (a) is adjusted to stabilize the strip position, provides that shortly before the rolled trailing strip end (1a) exits the developing rolling force differences are measured separately for each roll stand (F1, F2, F3 . . . Fn), that from this the pivot value (16) and the pivot direction are derived for forming a corrective value for the adjustment of the rolls (10, 11) and that the adjustment is corrected.

Abstract: A closing device 100 which presses a die 2 against a rotating pipe body 1 such that an open end portion of the pipe body 1 is plastically closed by the die 2 includes a cored bar 3 inserted into the pipe body 1 to close the open end portion of the pipe body 1 on the opposite side of the die 2, and a reactive force applying mechanism 43, 60 which allows the cored bar 3 to retreat and applies a reactive force to the retreating cored bar 3 when the cored bar 3 receives a predetermined load or more during processing of the pipe body 1 by the die 2.

Abstract: Apparatus and method of controlling strip geometry in casting strip having a rolling mill. A target thickness profile is calculated as a function of the measured entry thickness profile of the strip while satisfying profile and flatness operating requirements. A differential strain feedback from longitudinal strain in the strip is calculated by a control system by comparing the exit thickness profile with the target thickness profile, and a control signal is generated to control a device capable of affecting the geometry of the strip processed by the hot rolling mill. A feed-forward control reference and/or sensitivity vector may also be calculated as a function of the target thickness profile, and used in generating the control signal sent to the control device. The control device may be selected from one or more of the group consisting of a bending controller, gap controller and coolant controller.

Abstract: The outer side of a pair of curved parts 3d of a longitudinal annular blank is pressed and energized towards the curved part 3d of the opponent side with a molding outer die 14 of a shaping device 13 to press and widen each curved part 3d to a large curved part of large curvature radius, and a half-finished article 17 is molded, and thereafter, the half-finished article 17 is pressed and widened by cooperative operation of a finishing inner die of the shaping device and a window part of a perfect circle functioning as an outer die to manufacture a ring-shaped member. Therefore, a yield rate or a percentage of the weight of the ring-shaped member with respect to the weight of the raw material and the yield rate or the percentage of the ring-shaped member with respect to the blank can be improved, and the cost can be reduced.

Abstract: The invention relates to a rolling mill for tubes, in which a series of roll-holder containers (10) is housed in an external structure (2) extended along a rolling axis (L); the containers can slide inside the structure to be extracted therefrom and each one houses at least three rolls (17, 18, 19) controlled by respective driving motors (41, 42, 43). In accordance with the intervention the rolls (17, 18, 19) can be moved inside the containers (10) in a guided way along directions radial in relation to the rolling axis, in order to regulate the distance therefrom.

Abstract: A die cushion controller, for driving a die cushion, disposed in opposition to a slide of a press machine, by controlling a servo motor, including: a pressure command portion which prepares a pressure command value for exerting a predetermined pressure to a press material disposed between the slide and the die cushion; a pressure detecting portion which detects an actual pressure exerted on the press material; a speed correction value preparing portion which prepares a speed correction value by multiplying a differential value of the pressure command value prepared by the pressure command portion by a coefficient; and a first speed command portion which prepares a speed command value to be instructed to the servo motor based on the pressure command value prepared by the pressure command portion, the actual pressure detected by the pressure detecting portion, and the speed correction value prepared by the speed correction value preparing portion.

Abstract: Thread lug forming systems form thread lugs (36) on container necks or necked end domes. A continuously rotating cam system (100) has multiple sets of thread lug forming tools (135) which are driven to recirculate about stationary cams (130). The cams actuate inner and outer forming tools (150, 152) of the tool sets as they progress around the cams to form the thread lugs. A second system uses generally the same tool sets in a multiple-station reciprocating press (203), and the container bodies are indexed through the tool stations (252) in which the thread lugs are formed.

Abstract: An expansion member for a rotary expansion tool comprises a spindle adapted to be supported at both ends, and a roller mounted concentrically on the spindle. A sealed lubrication system is contained within the spindle for supplying lubricant to a bearing or bearing surface at an interface between the spindle and the roller.

Abstract: The invention relates to a device (1) for sealing the ball side of a bearing of a roller journal (2), comprising a journal bushing (3) which is drawn to the roller journal (2), said journal bushing being associated with a bearing ring (5), a bearing bushing (7) which is mounted in an insertion piece (6), also comprising radial shaft seals which are associated with the insertion piece via a holder (11) and which are provided with radial lips (13, 13) which co-operate with the bearing ring (5) and a sealing arrangement (16) which is arranged upstream from the radial shaft seals so that the roller (4) can roll. The aim of the invention is to improve said device in such a way that it can be produced and operated economically such that it consists of only a small number of parts and has an improved sealing effect.

Abstract: A device for aligning the input apparatuses and the channels in a rolling stand is characterized in that it comprises: a measurement instrument (20) equipped with means (22, F, 23) for detecting the position of the surfaces of the channels (4), at least one electronic sensor (24) suitable for receiving such position detection and instrumentation for displaying the detection and its processing, and for providing the detected position.

Abstract: A method of processing different sized long products delivered from a rolling mill, comprising forming products within a first range of sizes into helical formations of rings having a first diameter, and alternatively forming products within a second range of sizes larger than the largest product size within said first range into helical formations of rings having a second diameter larger than said first diameter. The helical formations of rings are deposited on a conveyor for transport to a reforming station where they are gathered into coils.

Abstract: A device for controlling the drawing process in a transfer press has two tool parts which act in opposition to one another and between which the workpiece to be deformed is held. One tool part is moved between two reversal points by a mechanical crank mechanism driven at a constant rotational speed. The second tool part is connected to the piston of a hydraulic differential cylinder via a piston rod. The movement of the piston is controlled by the supply of pressure medium into a first chamber and by the discharge of pressure medium out of the second chamber of the differential cylinder. During a first time segment within a range delimited by the first and the second reversal point, the rod-side face of the piston is acted upon by a pressure which is sufficiently high to accelerate the second tool part as that, when the two tool parts impinge one onto the other, both tool parts move virtually at the same speed.

Abstract: The problem to be solved by the present invention is to clear up an eccentric load onto a pin and a problem of deformation and cavity due to flowing material during extrusion when spring washer blind-holes in a piston for an automobile transmission are formed by extrusion with a pin. After an annular region along the peripheral edge portion on the back of an end plate of a secondary workpiece is flattened, the secondary workpiece is set on a lower die. Further, while the lower die is pressed with upper dies and cushion pressure is applied on the lower die, pins, for piercing the spring washer blind-holes are made to perform an extrusion operation onto the end plate of the secondary workpiece from the backside of the end plate. The extruded material is made to flow into recess holes of the upper die, and thus spring washer blind-holes are formed. Then, projections which have flowed and protrude on the front side are removed by turning with a lathe.

Abstract: A trimming turret including a first trimmer head including a first pilot. The turret is configured to receive a stress induced plastically deformed container having earing about a respective opening in the container, and at least one of (i) direct the container to the first trimmer head so that the pilot becomes located inside the opening, and (ii) direct the first trimmer head to the container so that the pilot becomes located inside the opening. The turret is configured to trim off the earing from the container with the first trimmer head.

Abstract: A press control system includes at least one sensor for registering current states of at least one component of a press and at least one regulating and control device for generating actuating signals for actuating the at least one component of the press. A press simulator is integrated into the press control system for training purposes and/or diagnostic purposes on the press.

Abstract: The invention relates to a device for forming, such as a press tool comprising: a body having a receiving structure end for receiving into a receiving structure of a folding press, which end is connected via a central portion to a tool end, at least one safety member which can protrude beyond a surface plane of the receiving structure end, and an actuating member which is movable in a first direction and which is coupled to a safety member, comprising immobilizing means for making the actuating member inoperative.

Abstract: A method for operating a mechanical press including an electric drive motor, a drive control for controlling the motor, a ram, a flywheel, a clutch and a member for translating rotational motion of the flywheel in a first rotation direction into a linear motion of the ram arranged to be lowered and raised along a linear path for operating the press to carry out a press production cycle. The press cycle includes a pressing part and one or more non-pressing parts. The press includes a second drive motor or actuator arranged connected to the ram and by providing a control output to the drive control, the speed of the second drive motor is made variable during at least one part of the press production cycle. The press may be reversed between production cycles. A press and system including such a press.