With Tool Carrier (e.g., Press Frame) Patents (Class 72/455)
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Patent number: 5263356Abstract: A progressive former and method of producing progressive formers is disclosed in which the bed frame is formed of two side frame members and a spacer member. The two side frame members and the spacer member are substantially fully machined before the side frame members are assembled on opposite sides of the spacer member. Within a given machine size, the side frame members are identical and the width of the spacer member is adjusted to provide the proper spacing between the side frame members for the particular number of work stations in a given machine. By utilizing component parts to produce the machine bed frame rather than a one-piece casting, substantial cost savings are achieved. Further, since the side frame members are identical in machines of a given size having different numbers of work stations, it is economically feasible to produce side frame members for inventory and then assemble them with an appropriate spacer member to provide the desired number of work stations.Type: GrantFiled: April 22, 1992Date of Patent: November 23, 1993Assignee: The National Machinery CompanyInventors: William H. Hite, Dennis N. Roush, Stephen G. Corthell
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Patent number: 5243893Abstract: A mechanism for positioning a cutting and punching machine relative to a fixed conveyor for feeding material to be processed in a fixed horizontal route into the machine. The positioning mechanism comprises a carriage which supports the machine for back and forth movement laterally of the horizontal feeding route, which carriage is supported in turn on a support providing tracks for lateral movement of the carriage, with the support mounted within a lined pit. A drive unit is mounted on the machine for effecting lateral movement of the carriage, and a second drive unit is mounted within the lined pit below the support for moving the support vertically within the pit.Type: GrantFiled: April 21, 1992Date of Patent: September 14, 1993Assignee: Pitt-Des Moines, Inc.Inventors: James P. Evans, Eldon E. Schultz, Charles D. Smith
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Patent number: 5226307Abstract: An upsetting press for the reduction of rolled material, particularly for reducing the slab width in hot-rolled wide strip breaking-down trains. The upsetting press includes tool carriers arranged on both sides of the slab and pressing tools which are movable in direction of slab reduction by means of a crank drive arranged in a crank housing. Each lower longitudinal post member of the upsetting press facing the press foundation has approximately in the middle thereof a fixed foundation bearing and longitudinally spaced from the fixed bearing at least two movable bearings. The crank housing can be locked between the upper and lower post members with releasable clamping devices.Type: GrantFiled: November 4, 1991Date of Patent: July 13, 1993Assignee: SMS Schloemann-Siemag AktiengesellschaftInventor: Gerhard Heitze
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Patent number: 5184496Abstract: A pressing die comprises a shaping panel form being pressed against a blank to be pressed into a product, an attachment panel adapted to be mounted on a press machine frame, first ribs extending from optimum positions on the shaping panel, second ribs extending from optimum positions on the attachment panel and offset from the first ribs, and intermediate ribs optimally joining the first and second ribs to each other.Type: GrantFiled: September 18, 1991Date of Patent: February 9, 1993Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Takaoki Namba, Teruo Kamada
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Patent number: 5138866Abstract: A progressive former and method of producing progressive formers is disclosed in which the bed frame is formed of two side frame members and a spacer member. The two side frame members and the spacer member are substantially fully machined before the side frame members are assembled on opposite sides of the spacer member. Within a given machine size, the side frame members are identical and the width of the spacer member is adjusted to provide the proper spacing between the side frame members for the particular number of work stations in a given machine. By utilizing component parts to produce the machine bed frame rather than a one-piece casting, substantial cost savings are achieved. Further, since the side frame members are identical in machines of a given size having different numbers of work stations, it is economically feasible to produce side frame members for inventory and then assemble them with an appropriate spacer member to provide the desired number of work stations.Type: GrantFiled: April 26, 1991Date of Patent: August 18, 1992Assignee: The National Machinery CompanyInventors: William H. Hite, Dennis N. Roush, Stephen G. Corthell
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Patent number: 5105649Abstract: A progressive former having quick-change tooling provides tooling supports with means for adjusting the tools. The tooling is mounted so that the tooling and the structure for adjusting the tooling can be removed as units without loss of the fine-tuning of the adjustments and so that reinstallation does not require readjustment of the tooling. A transfer also provides adjustable cams for opening and closing gripper fingers which transport workpieces from one work station to the next. The adjustable cams are removable with the dies as units and can be reinstalled without further fine-tune adjustment. With the invention, entire tool sets can be changed in a very short time to eliminate loss of production capacity of the machine. Similar sized machines are provided with a fixed spacing between the locating surfaces for the stationary dies and the reciprocating tools so that tool sets having adjustments fine-tuned in one machine can be installed in a similar machine without further retuning of the adjustments.Type: GrantFiled: January 14, 1991Date of Patent: April 21, 1992Assignee: The National Machinery CompanyInventors: William H. Hite, Gene E. Allebach
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Patent number: 5097734Abstract: A system is disclosed for neutralizing the punching reaction forces in an open frame punch press in which inclined primary links mounted on the upper and lower frame members are stressed by linkage actuators during punching so as to counteract the punching reaction force. In one embodiment, a charging cylinder mounted to be acted on by the punch ram actuator generates hydraulic pressure used to operate linkage actuators. In that embodiment, the primary links are combined with secondary links to form toggle linkages to enable mechanical force multiplication of the force applied by the linkage actuators. In another embodiment the primary links converge and are pivotally connected at their rear ends to each other and a single secondary link, with a single cylinder at the forward end of one of the primary links, placing the primary links in tension during punching operations to neutralize the punching reaction forces acting on the press frame.Type: GrantFiled: July 25, 1990Date of Patent: March 24, 1992Assignee: Murata Wiedemann, Inc.Inventors: James R. Hunter, George Jaworski
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Patent number: 5085069Abstract: A multi-part frame structure forming a mill housing for a rolling mill assembly is disclosed. The housing includes six separate and distinct components, namely a bottom separator member, a top separator member spaced above and disposed in registry with the bottom member and four elongated, upstanding columns of rectangular cross-section adjoining the top and bottom separator members to form a substantially rectangular opening for the passage of a steel strip therethrough during cold rolling operations. The top and bottom separator members are each of T-shaped cross-section defining a pair of tee arms which extend transversely across the frame and project forwardly and rearwardly from a tee leg. The tee arms of the top separator member are inserted in close spaced relation in traversely extending notches formed in upper end portions of the four columns.Type: GrantFiled: November 26, 1990Date of Patent: February 4, 1992Assignee: Steel Technologies, Inc.Inventor: James C. Walters, Jr.
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Patent number: 5044190Abstract: A mounting structure for a collet crimping machine is disclosed which permits the machine to be selectively rotated between vertical and horizontal positions as desired for use. A pair of upstanding support arms have respective brackets rotatably mounted thereon which are connected to the collet crimping machine. A retaining device is provided for selectively retaining the collet crimping machine in a desired rotational position relative to the mounting base. In a first embodiment, the retaining device includes a spring loaded detent pin mounted on one of the support arms. The detent pin cooperates with a plurality of apertures formed through a portion of the bracket mounted on that arm for retaining the bracket (and the collet crimping machine connected thereto) in one of a plurality of discrete positions defined by the apertures.Type: GrantFiled: September 4, 1990Date of Patent: September 3, 1991Assignee: Dana CorporationInventors: Steven R. Hoff, Richard I. Wermer
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Patent number: 5027638Abstract: A force-resisting structure, such as a press frame, is composed of a plurality of substantially planar loops each made from a single piece of metal plate. The loops are connected together in spaced, parallel relation by bolts which perform essentially no force-resisting function. The structure contains no welds. All components requiring machining are machined before assembly, and there are no machining operations thereafter.Type: GrantFiled: June 22, 1990Date of Patent: July 2, 1991Inventor: Roland W. Friestad
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Patent number: 4977774Abstract: A press device which is reduced in overall height thereof and in deformation of a press frame and can sufficiently support an eccentric load thereto. The press device comprises a press force generating unit disposed in a press frame and including a lid member secured to the press frame, a cross head having a cylinder chamber in which the lid member is fitted for axial sliding movement and having a blank holder at an end face thereof remote from the lid member, and a pressurizing member fitted for axial sliding movement in a portion of the cylinder chamber remote from the lid member. A shaping element is disposed in the press frame in an opposing relationship to the press force generating unit and has a shaping portion in which the pressurizing member is fitted.Type: GrantFiled: November 30, 1989Date of Patent: December 18, 1990Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Akira Asari, Kuniaki Kanda, Hiroshi Okamoto, Masakazu Ueda
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Patent number: 4951495Abstract: A machine tool, in particular a machine for working with punches and dies parts formed from sheet material, comprises an essentially C-shaped frame made up of two parallel-connected, essentially C-shaped frame parts. The first frame part is designed to absorb the reaction forces from forces exerted by tools placed between the arms of the C-shaped parts. The second frame part is designed to hold the tools in a desired position relative to each other. The two C-shaped frame parts near the ends of the arms thereof are connected to each other only by means of a hinge joint between the bottom arm of the first C-shaped frame part and the neighboring bottom arm of the second C-shaped frame part, and a connecting element which at one side is hingedly connected to the top arm of the first C-shaped frame part by means of a hinge joint and at the other side is connected to the top arm of the second C-shaped frame part.Type: GrantFiled: July 6, 1989Date of Patent: August 28, 1990Assignee: Holding M. Brouwer & Co. B.V.Inventors: Peter Van Daalen, Antonius H. Groot Zwaaftink
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Patent number: 4947673Abstract: Underdrive power presses are provided with arrangements where the slide mechanism is removable transversely through spaced apart hollow side uprights of the press frame. Pull rods extending from the press drive mechanism are located within the hollow uprights. Movable crossheads are slidably mounted with respect to the uprights above the slide and provide means in a dual action press for independently coupling an inner slide and outer slide within the opening between uprights. Since the slide connections are disposed beneath the movable crossheads and dimensioned narrower than the upright opening, the slide mechanism can be uncoupled and transversely moved outside of the press frame through an upright opening.Type: GrantFiled: April 13, 1989Date of Patent: August 14, 1990Assignee: Connell Limited PartnershipInventor: Robert Baranski
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Patent number: 4923381Abstract: A press tooling transfer system which includes a track system having a turntable for directing a carriage, with the tool set, between several stations and a press. There is overhead service and power supply connected with the carriages for reaching to all station positions of the carriage, and there is no requirement for any power drive or the like below the level of the tracks supporting the carriages. Also, the system is in duplicative form with respect to its carriages, tracks, presses, and overhead supply, but the system can utilize a common or single knock-out station for the duplicative portions of the system, as mentioned.Type: GrantFiled: February 27, 1989Date of Patent: May 8, 1990Assignee: Elwood Hydraulics Co., Inc.Inventors: Philip T. Delmer, Lewis D. Hunt
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Patent number: 4922744Abstract: The punch machine comprises a U-shaped member having an upper leg, a lower leg and a crosspiece to thereby form a U-shaped work space open on the front side of the punch machine but closed on the rear side by the crosspiece between the upper leg and the lower leg, a punch piston-cylinder unit with a punch tool mounted in the upper leg and a die-bearing member and/or a workpiece receiving member mounted in the lower leg. At least the upper leg experiences a bending moment and a resultant elastic deformation caused by the punching force occurring during the punching operation. To reduce the deformation, a tie bar connects both the lower and the upper legs located horizontally between the crosspiece and the punch piston-cylinder unit. This tie bar passes through or by the work space. It may be moved horizontally according to the punching force to reduce the elastic deformation. Also a process is described for operating the punch machine which keeps the bending moment constant.Type: GrantFiled: February 28, 1989Date of Patent: May 8, 1990Assignee: Carl Ullrich PeddinghausInventor: Bernd Stursberg
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Patent number: 4916951Abstract: A press, in particular a high-speed punch press (1), has a substructure (7) which is elastically mounted by means of springs (14). This makes it possible for the press (1) to assume various heights depending on the applied weight (for example that of the tool). In order to ensure cooperation with a handling device (31) of as simple a design as possible, a locking means (42) is provided, by means of which the substructure (7) can be fixed at a predetermined height.Type: GrantFiled: November 4, 1987Date of Patent: April 17, 1990Assignee: Bruderer AGInventor: Helmut Messner
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Patent number: 4910993Abstract: A progressive former and method of producing progressive formers is disclosed in which the bed frame is formed of two side frame members and a spacer member. The two side frame members and the spacer member are substantially fully machined before the side frame members are assembled on opposite sides of the spacer member. Within a given machine size, the side frame members are identical and the width of the spacer member is adjusted to provide the proper spacing between the side frame members for the particular number of work stations in a given machine. By utilizing component parts to produce the machine bed frame rather than a one-piece casting, substantial cost savings are achieved. Further, since the side frame members are identical in machines of a given size having different numbers of work stations, it is economically feasible to produce side frame members for inventory and then assemble them with an appropriate spacer member to provide the desired number of work stations.Type: GrantFiled: May 4, 1988Date of Patent: March 27, 1990Assignee: The National Machinery CompanyInventors: William H. Hite, Dennis N. Roush, Stephen G. Corthell
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Patent number: 4907480Abstract: A turret punch press machine comprising a frame consisting of a base frame portion, column portions extending from the base frame portion, and an upper frame portion horizontally extending from the column portions. The upper frame portion is divided into first and second upper frame portions, a hammer and a hammer driving mechanism are attached to the first upper frame portion. An upper turret of paired ones, each having plural die halves at the circumferential rim portion thereof, is attached to the second upper frame portion, whereas another lower turret is attached to the base frame portion. Even when the first upper frame portion is deformed by the repulsive force and the like of the hammer which is being operated, the second upper frame portion is left undeformed so that the upper and lower turrets cannot have an undesired positional relationship.Type: GrantFiled: December 24, 1987Date of Patent: March 13, 1990Assignee: Anritsu CorporationInventor: Kazuo Kuroyone
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Patent number: 4890475Abstract: A prestressed hydraulic press includes a pressure generator for selectively prestressing the hydraulic press such that the press is under substantially constant stress during all phase operations of the hydraulic press.Type: GrantFiled: August 25, 1988Date of Patent: January 2, 1990Assignee: Maschinenfabrik Lauffer GmbH & Co. KGInventor: Horst Baltschun
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Patent number: 4878374Abstract: A five bar articulating mechanism having the bars pivotally linked one to another forming a closed loop. Any one of the bars is intermittently rigidly joined to an adjacent bar to convert the five bar mechanism to a four bar mechanism.Type: GrantFiled: May 20, 1988Date of Patent: November 7, 1989Inventor: Richard E. Nelson
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Patent number: 4876878Abstract: The invention relates to a cutting and reshaping press with hydro-mechanical articulated lever drive in which a drive cylinder (3) for a ram (2) is supported by a bridge structure (5) located in a stanchion (1) between lateral guides (12). The bridge structure (5) is connected to the stanchion (1) by means of threaded spindles (4) capable of being adjusted in height. The bridge structure (5) constitutes the connection between two support axles (6) installed on either side symmetrically in relation to the middle of the press and a central guide (7) in which the piston rod (3.1) travels. At the end of piston rod (3.1) is an articulation point (10.4). The two support axles (6), together with additional connected articulation points (8 and 9) constitute rigid triangles (10) which are pivotable about support axles (6). The articulation point (9) oriented towards the center of the ram (2) is connected by two coupled drive lever elements ( 10.2 and 10.2) to articulation point (10.3) located in curves (7.Type: GrantFiled: March 23, 1988Date of Patent: October 31, 1989Assignee: Werner LeinhaasInventor: Andrea Scheitza
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Patent number: 4848125Abstract: A wheel rim forming machine including a fixed frame having four vertically extending columns. Due to the frame structure, the forming force acting at the top and bottom rolls of the machine are borne evenly through tensile forces acting in the four columns. Thus, no bending deformation occurs in the columns. Further, because the columns are not exposed to bending forces, they can be formed with a relatively small cross-section and thus the frame structure is compact. Therefore, access to the guide rolls and their support structure is facilitated and high grade adjustment of the guide rolls is possible.Type: GrantFiled: October 16, 1987Date of Patent: July 18, 1989Assignees: Topy Kogyo Kabushiki Kaisha, Watanabe Tekko Kabushiki KaishaInventors: Susumu Itou, Yusaku Shinozawa, Tsunoru Nakamura
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Patent number: 4805440Abstract: A punching or stamping machine for operating on thin material with very high precision comprises a horizontally disposed, elongate fixed base (1) and a hollow movable arm (2) extending parallel to the base and connected to it at one end by a resiliently flexible web (3). At the other end, on machined faces (8 and 9), the arm and the base each carry a set of tools, for example, a set of punches and a corresponding set of dies. The web (3) forms a connection between the arm and the base which will permit the necessary operative movement of the arm in the vertical direction but will not allow significant displacement of the arm relative to the base in a horizontal direction, thus contributing to a maintenance in the accuracy of alignment of the punches and dies which is better than that available with a pivotal connection, which is subject to frictional wear.Type: GrantFiled: June 16, 1987Date of Patent: February 21, 1989Assignee: U.S. Philips CorporationInventor: Henricus J. P. Lenders
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Patent number: 4794781Abstract: A frame for a press, including a bed having four corners, upstanding members formed integrally with the bed at its four corners, and bow resisting elements disposed between the bed and the upstanding members so as to resist bowing of the upstanding members under a vertical load on the bed. In one embodiment the bow resisting elements include rib members connected to the bed and extending inside the upstanding members. In another embodiment the bow resisting elements include wedge members wedged between a bolster on the bed and the upstanding members.Type: GrantFiled: September 28, 1987Date of Patent: January 3, 1989Assignee: Aida Engineering, Ltd.Inventors: Masakatsu Shiga, Yuichi Nakamura
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Patent number: 4783986Abstract: An anti-vibration mounting for shock-or-vibration producing machinery, having leaf springs (1) whose straps (3) fit into recesses (6) of a bed plate (4) of the machine and ends (7) of every leaf spring (1) rest on a separate support (9) at a height H above a foundation (11) which is decided by the conditionH>2(h+.delta.),whereh=depth of the recess (6) for the strap (3) of the leaf spring (1) in the bed plate (4) of the machine; and.delta.=static deflection of the leaf spring (1).Type: GrantFiled: March 23, 1987Date of Patent: November 15, 1988Assignee: Gorkovsky Politekhnichesky InstitutInventor: Valery P. Koshelev
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Patent number: 4760729Abstract: A metalworking press for forming easy open can ends. The metalworking press includes a primary ram for suspending an upper tooling member and designed to vertically reciprocate; a primary press bed stationarily positioned beneath the primary ram for mounting a lower tooling member; a seconary ram positioned beneath the primary press bed for suspending another tooling member and designed to vertically reciprocate; a secondary press bed stationarily positioned beneath the secondary ram for mounting another lower tooling member; driving rods secured to the primary ram and the secondary ram so that the rams move in unison; and a device to vertically reciprocate the primary ram so that when the device moves the primary ram downwardly the secondary ram moves downwardly, and when the device moves said primary ram upwardly, the secondary ram moves upwardly.Type: GrantFiled: January 6, 1988Date of Patent: August 2, 1988Assignee: The Stolle CorporationInventor: Elton G. Kaminski
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Patent number: 4756072Abstract: Universal press to process and/or for the application of small items such as stamping, drilling, die-punching, button-holing, riveting and similar operations, including: a base (19); a "C"-shaped structure (1) fixed to the said base; a hollow, vertical cylindrical body (2), to which the control device (4) is fixed and the support (9) of the moving tool (10), arranged at the end of the upper arm of the structure (1) and carriage (14), or (15) to support the fixed tool holders (12) complete with guides which match the coherent vertical guides (16) of the lower arm.Type: GrantFiled: May 29, 1985Date of Patent: July 12, 1988Assignee: Officina Meccanica Fratelli Falzoni s.r.l.Inventor: Pierino Falzoni
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Patent number: 4753099Abstract: A bending press includes a work support table comprised of a pair of support elements, at least one of which is mounted on the frame for movement generally vertically relative to the work support plane. Workpiece positioning elements are located on opposite sides of the work station defined by the upper and lower dies and are movable horizontally of the work support plane defined by the work support table. A drive motor effects horizontal movement of at least one of the workpiece positioning elements relative to the other positioning elements so as to move the workpiece on the work support table and effect its precise positioning in desired positions relative to the work station. The machine includes a computer control for operating the various drive motors and may include a rotatable work support table for effecting rotation of the workpiece to reorient it relative to the work station.Type: GrantFiled: September 5, 1986Date of Patent: June 28, 1988Assignee: Trumpf GmbH & Co.Inventor: Hans Klingel
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Patent number: 4729234Abstract: Hydraulic jacks, stands and other support structures for temporarily supporting and/or lifting the crosshead of a forging press or other components thereof are built-in at the foundation pit of the forging press. As the need arises to support or lift the lower crosshead during maintenance, repair or daylight adjustment procedures, the support and lifting implements can be rolled from under specially provided alcoves in the foundation pit to predetermined locations under the forging press. The permanent location of the support implements in the foundation pit reduces the down time of the forging press from a week or more to about one or two days.Type: GrantFiled: March 27, 1986Date of Patent: March 8, 1988Assignee: Press Technology CorporationInventor: Adam Zandel
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Patent number: 4727743Abstract: A sliding table, used for the exchange of tool or die sets of a press is moved into and out of the press on rails. The driving motion is caused by an adjusting mechanism in the sliding table. An underfloor power containing channel extends parallel to the moving direction of the sliding table and is used for containing at least one power supply line taken along by the sliding table. The underfloor power containing channel is closed in an upward direction by a covering, consisting of individual cover members, flexibly connected with one another and with its own drive which causes pre-stressing of the cover members prior to movement of the sliding table.Type: GrantFiled: September 10, 1986Date of Patent: March 1, 1988Assignee: L. Schuler GmbHInventor: Siegfried Baur
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Patent number: 4711111Abstract: A press plant with a forming press of the pressure cell type for enhancing the forming space of the press, especially with regard to depth, which is accomplished according to the invention in that the tray has a planar bottom plate with a detachable tray frame resting thereon, the axial loads induced by the working pressure on the short ends of the tray frame in this manner being absorbed by an annular frame or the like, whereby the forming space of the inventive press plate will not be restricted by working pressure dependent dimensioning factors.Type: GrantFiled: May 30, 1986Date of Patent: December 8, 1987Assignee: Asea ABInventor: Keijo Hellgren
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Patent number: 4706490Abstract: A frame for a large 50-500 kiloton forging press including a pair of spaced horizontally crossheads which are interconnected by left and right upright tie-rod assemblies. The crosshead and tie-rod assemblies are connected to one another by way of yoke shaped couplings which are disposed around each end region of the upper and lower crossheads. The tie-rod assemblies which are constructed of a plurality of overlapping elongated plates are pivotally connected to the couplings. The absence of link pins for connecting the tie-rods and crossheads directly to one another improves the distribution of stresses in the frame of the forging press. Apart from the above, plates of the tie-rods are fabricated in sections which are interlinked by suitable link plates to produce sufficiently long tie-rods. The plates of the tie-rods are provided with more than one linking position to the crossheads to allow adjustment of the size of the daylight of the forging press.Type: GrantFiled: January 23, 1986Date of Patent: November 17, 1987Assignee: Press Technology Corp.Inventors: Alexander Zeitlin, Jack Brayman, Adam Zandel
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Patent number: 4696180Abstract: A guiding arrangement is provided for guiding the movement between the frame and other components of a forging press during the up and down movement that takes place during each forging press cycle. Upright left and right columns of the frame are constructed of multiple layers of tie-rods which are spaced from each other by the thickness of crosshead plates with which they are interlaced. The guiding arrangement includes a plurality of metal segments, resembling triangular plates, located between the tie-rod plates of the columns and pivotably mounted thereto. Each metal segment has a smooth edge which is oriented to slide smoothly up and down on sliding plates which are connected to forging press components. The pivoted mounting of the metal segments is inherently self aligning and the accessibility of the metal segments permits easy maintenance and repair.Type: GrantFiled: February 26, 1986Date of Patent: September 29, 1987Assignee: Press Technology CorporationInventor: Adam Zandel
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Patent number: 4694678Abstract: Each tie-rod bar or beam from which tie-rod assemblies for large forging presses are assembled is constructed of a middle section made of a lower yield strength alloy steel to which end sections made of steel alloy having comparatively higher yield strengths are welded. A link pin hole is formed in each end section for receiving a link bolt intended for securing a plurality of the tie-rod bars to one another and/or to the frame of the forging press. The end section may be slightly wider to more easily withstand the larger stresses developed there during operations of the press. In one preferred adaptation, the material of the middle section is designed for a minimum of 45,000 psi and the end section for a minimum of 80,000 psi.Type: GrantFiled: January 21, 1986Date of Patent: September 22, 1987Assignee: Press Technology CorporationInventors: Alexander Zeitlin, Adam Zandel
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Patent number: 4688417Abstract: A pull-down type forging press is provided with a horizontally extending tunnel in its foundation pit through which the large main cylinders which generate the forging press forces can be removed from the press. A vertical shaft in communication with the horizontal tunnel and a suitable crane located in the main building containing the press enable the main cylinders to be lifted from the foundation pit for maintenance or servicing. Guide rails on the floor of the tunnel and hydraulic jacks braced against the walls of the tunnel or other stationary structures in the foundation pit serve to push the cylinders under the vertical shaft over a straight course and also return them back into the proper position in the press after the servicing is completed.Type: GrantFiled: March 24, 1986Date of Patent: August 25, 1987Assignee: Press Technology CorporationInventor: Adam Zandel
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Patent number: 4676090Abstract: A press machine is disclosed which is provided with a plurality of press dies fixedly secured on a bolster. The machine has a vertically reciprocable frame member with a predetermined constant stroke, which carries a plurality of pressure plates cooperating with the die, respectively. Each pressure plate is axially movable with respect to the frame member and threadedly connected with a spacer plate arranged between the frame member and the pressure plate. The shut height of the machine can be individually adjusted for each pressure plate, by rotating the spacer plate relative to the pressure plate. The shut height can be optimized very easily and in short a time so that the productivity can considerably be improved.Type: GrantFiled: October 29, 1984Date of Patent: June 30, 1987Assignees: Hashimoto Forming Industry Co., Ltd., Kabushiki Kaisha Shibakawa SeisakushoInventors: Tatsuo Nishimura, Tatsuya Tamura
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Patent number: 4643017Abstract: A four bar linkage is movable from a first position to a second position by a continuous motion of a linear actuator. The linkage comprises a first leg and a second leg shorter than the first leg spaced from and parallel to the first leg in the first position. The first and second legs are supported at their lower end by being pivotally attached to a base, and the upper ends of the first and second legs pivotally support an upper platen at their upper end. The first and second legs, the base, and the upper platen comprise the elements of a four bar linkage. The linkage is translated from a first position where the first and second legs are parallel and extend vertically upward to a second position wherein the platen is rotated up to 90.degree. or more and is displaced laterally from the base and can face to the side and upward allowing access to the base and the upper platen from overhead.Type: GrantFiled: January 21, 1986Date of Patent: February 17, 1987Inventor: Richard E. Nelson
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Patent number: 4635465Abstract: A die pulling apparatus comprising a pair of die puller box assemblies, means for lifting the die puller box assemblies from a lower position to a raised position in which the top surfaces of the die puller box assemblies are flush with the die supporting surface of a stationary die supporting member, such as a bolster, and means for moving the die horizontally from the die puller box assemblies to the stationary member or vice versa when the die puller box assemblies are in their raised position.Type: GrantFiled: October 31, 1985Date of Patent: January 13, 1987Assignee: Karder Machine Co.Inventors: Robert U. Ashelman, Jr., Michael G. Townsend, Mark C. Lawrence
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Patent number: 4633700Abstract: Crosshead and tie-rod assemblies, from which a frame for a forging press is constructed, include several sections each of which is comprised of a plurality of overlapping plates which are held together by ties. Auxiliary clearance holes are provided in the outermost sections through which the ties of the intermediate sections can be removed. Alternatively, the ties which hold together the intermediate middle sections are coaxially aligned with the ties in the outer sections. However, to permit withdrawal of the ties from the middle section without dismantling the outer sections, hollow tubular ties are employed in the outer sections and the solid ties of the middle sections can be removed by guiding them through the tubular ties.Type: GrantFiled: January 21, 1986Date of Patent: January 6, 1987Assignee: Press Technology CorporationInventor: Adam Zandel
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Patent number: 4615208Abstract: A hydraulic press construction uses multiple alternating plates for the press frame sides and ends, and has joints which provide exceptional strength, high safety factors and a rigid frame for high tonnage applications. The joints function to utilize the full shear load capacity of the multiple adjoining faces of the plates in the joint sections. Multiple tensioned shear rods and/or high strength adhesive join the plates together at joint locations, and keys or tongue and groove configurations may be employed in the joints. These elements provide press joints that are rigid and that have high strength. They give the press frame a high resistance to deflection and distortion under load, as well as the capability for precision operations at press loads up to thousands of tons. A special hydraulic cylinder for the press also is described.Type: GrantFiled: March 2, 1984Date of Patent: October 7, 1986Inventor: Robert W. Hailey
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Patent number: 4607518Abstract: In a forging press of underfloor construction, the vertically travelling frame has a lower crosshead which fits around and is guided on a hollow guide shaft which projects downwards from the table crosshead or platten of the press. The hollow guide shaft serves also as the working cylinder of the press. A working plunger piston which is slidable in the cylinder is coupled to the lower travelling crosshead of the press frame through spherical jointing to eliminate transverse forces on the piston.Type: GrantFiled: June 19, 1985Date of Patent: August 26, 1986Assignee: SMS HasenClever Maschinenfabrik GmbHInventors: Hans A. Schubert, Klaus Schulze
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Patent number: 4598573Abstract: A press is adapted for the press tool it is to operate, by means of at least one pad of force-transmitting material formed in situ on a surface adapted to transmit the forming force to the press tool. The pad is formed by locating a tool substitute in the space intended for the tool, defining at least one volume between the tool substitute and the said surface adapted to transmit the forming force with a sealing means and injecting the pad forming material in liquid state into the said volume to allow the same to harden there preferably under a force equivalent to that which will be used in forming a blank when the substitute tool is replaced by the press tool.Type: GrantFiled: May 24, 1985Date of Patent: July 8, 1986Assignee: ASEA AktiebolagInventors: Carl Bergman, Goran Holmstrom, Arne Nygard
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Patent number: 4583390Abstract: Apparatus for squeezing off pipe and then for rerounding the squeezed off pipe includes a frame having a fixed portion and a movable portion which utilize a pair of pins for squeezing off the pipe. A pair of rerounding fixtures are placed on the pins for rerounding the squeezed-off pipe. Both plastic and metal pipe may be squeezed off and rerounded with the apparatus. Hydraulic pressure is used for both the squeezing off and the rerounding forces.Type: GrantFiled: March 18, 1985Date of Patent: April 22, 1986Inventor: Robert N. Behrens
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Patent number: 4580436Abstract: A four bar linkage is movable from a first position to a second position by a continuous motion of a linear actuator. The linkage comprises a first leg and a second leg shorter than the first leg spaced from and parallel to the first leg in the first position. The first and second legs are supported at their lower end by being pivotally attached to a base, and the upper ends of the first and second legs pivotally support an upper platen at their upper end. The first and second legs, the base, and the upper platen comprise the elements of a four bar linkage. The linkage is translated from a first position where the first and second legs are parallel and extend vertically upward to a second position wherein the platen is rotated up to 90.degree. or more and is displaced laterally from the base and can face to the side and upward allowing access to the base and the upper platen from overhead.Type: GrantFiled: March 19, 1984Date of Patent: April 8, 1986Inventor: Richard E. Nelson
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Patent number: 4559800Abstract: The connecting arms or connection elements of a metalworking press, such as a metal forming or stamping press, are provided with flat electrical resistance heating pads attached directly to the web section of the connections for applying heat to the connections for preheating the connections to a desired temperature, prior to press start up, to stabilize the dimensions thereof.Type: GrantFiled: June 18, 1984Date of Patent: December 24, 1985Assignee: Dayton Reliable Tool & Mfg. Co.Inventor: Omar L. Brown
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Patent number: 4546638Abstract: An apparatus for repairing and straightening vehicles includes upper and lower tracks supported in vertically spaced relation by a frame, each track including a pair of laterally spaced apart and longitudinally extending side members. A plurality of tower assemblies are supported on the upper and lower tracks for longitudinal movement therealong. A pit is provided in which cross members support rails positioned directly under side bars of a truck vehicle for a tie-down to extend around the rails and to the vehicle side bars. A longitudinally moveable beam is provided between adjacent lower tracks and the pair of rails and is limited against vertical movement by horizontal flanges facing each other on the tracks and pair of rails. A pulley on the moveable beam engages a tension member extending from the tower to the vehicle to provide a downward pull on the vehicle between the track members and the rails. The structure of the tower assembly allows for pulling on the vehicle frame only at a 90.degree.Type: GrantFiled: December 20, 1982Date of Patent: October 15, 1985Assignee: Duz-Mor, Inc.Inventor: Carl R. Field
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Patent number: 4542674Abstract: An alignment mechanism for punch presses and the like, comprising a base having an upper support surface; the upper support surface having a plurality of load oriented spaced shaped recesses; a base alignment sleeve positioned in each of the recesses and conforming thereto and extending upwardly above the upper support surface; a frame positioned on the upper support surface and having a portion extending upwardly therefrom; the frame having a first set of a plurality of load oriented spaced shaped recesses for cooperating with the plurality of base recesses for positioning the alignment sleeves in the first set of recesses for aligning the frame with the base; the upwardly extending portion of the frame having an uppermost surface; the uppermost surface having a second set of a plurality of load oriented spaced shaped recesses; a crown alignment sleeve positioned in each recess of the second set of recesses and conforming thereto and extending upwardly above the upper row surface; a crown positioned on the uType: GrantFiled: August 3, 1983Date of Patent: September 24, 1985Assignee: Bath Iron Works CorporationInventor: RB Omo, Jr.
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Patent number: 4532794Abstract: A stamping and bending machine, having modular structure, comprises a drive unit, a pull-in feed system, a stamping press and one or several bending appliances are disclosed. Every bending appliance comprises one top and one bottom box of oblong shape forming a closed frame thanks to spacing elements. Within every box, there are two drive shafts which actuate bending attachments provided on the front and rear faces of the top as well as of the bottom boxes. The drive shafts of stamping press and of all bending appliances are coupled frontally. The shafts will all be driven at the same high speed, stepping down being performed not earlier than at a take-off gearing comprised in any bending attachment.Type: GrantFiled: September 19, 1983Date of Patent: August 6, 1985Inventor: Ernst Mauderer
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Patent number: 4479376Abstract: A fourslide metal wire and strip forming machine is provided with a removable drive motor mounted on a hinged door; a clutch shaft journalled in a plurality of bearings permitting easy removal and replacement of electric clutch and brake assemblies; a dual-speed drive shaft driven by a shiftable gear train, turning a reversible feed cam providing single and double feed cycles; a positive-action feed mechanism with resilient shock-mounting actuation for the feed carriage gliding on a low-friction ball-and-groove bushing; at least one tool-carrying angle slide cooperating with the conventional four slides converging upon the mandrel; an adjustable kingpost removable from behind the preferably vertical fourslide plane; and a supplemental "electronic handwheel" drive motor connected for reversible incremental actuation in small increments to facilitate tooling and feed assembly set-up operations.Type: GrantFiled: March 1, 1982Date of Patent: October 30, 1984Assignee: The A. H. Nilson Machine Co., Inc.Inventors: Robert E. Carlson, Halsey W. Skilton
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Patent number: 4475278Abstract: The present invention relates to a mechanical press, and in particular to such a press having a crown portion with an open top thereby permitting the crankshaft and connection arm assembly to be lowered therein in a preassembled state. Next, a cover plate is connected to the crown and the press motor assembly is mounted thereon. Belt connections to the drive assembly can be made through openings in the cover plate and access to the drive assembly can be had through removable doors on the ends of the crown. Preferably, the press frame comprising the bed, uprights and crown are formed as a single casting thereby avoiding the necessity for tie rods.Type: GrantFiled: February 7, 1983Date of Patent: October 9, 1984Assignee: The Minster Machine CompanyInventors: Robert L. Schockman, Vernon E. Busse, Terry L. Wissman, Daniel A. Schoch