EP3359316B1 - Presse à vis et procédé pour l'usinage de pièces par mise en forme - Google Patents

Presse à vis et procédé pour l'usinage de pièces par mise en forme Download PDF

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Publication number
EP3359316B1
EP3359316B1 EP16763255.3A EP16763255A EP3359316B1 EP 3359316 B1 EP3359316 B1 EP 3359316B1 EP 16763255 A EP16763255 A EP 16763255A EP 3359316 B1 EP3359316 B1 EP 3359316B1
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EP
European Patent Office
Prior art keywords
workpiece
axis
rotary table
machining
forming
Prior art date
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Active
Application number
EP16763255.3A
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German (de)
English (en)
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EP3359316A1 (fr
EP3359316C0 (fr
Inventor
Markus Otto
Kai Krzyzanowski
Siegfried Hausdörfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Langenstein and Schemann GmbH
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Langenstein and Schemann GmbH
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Publication date
Application filed by Langenstein and Schemann GmbH filed Critical Langenstein and Schemann GmbH
Publication of EP3359316A1 publication Critical patent/EP3359316A1/fr
Application granted granted Critical
Publication of EP3359316C0 publication Critical patent/EP3359316C0/fr
Publication of EP3359316B1 publication Critical patent/EP3359316B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/18—Drives for forging presses operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/22—Drives for hammers; Transmission means therefor for power hammers
    • B21J7/32—Drives for hammers; Transmission means therefor for power hammers operated by rotary drive, e.g. by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
    • B30B1/181—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means the screw being directly driven by an electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B21J13/085—Accessories for handling work or tools handling of tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B21J13/14—Ejecting devices

Definitions

  • the invention relates to a spindle press for the forming processing of workpieces and a method for the forming processing of workpieces using such a device.
  • Impact forming machines such as hammers and screw presses, in particular flywheel screw presses, are known for forming workpieces.
  • a generic spindle press for forging a shaft flange is known, wherein a trained with lower dies for receiving workpieces turntable, which has different approach positions, is arranged aligned below a attached to a ram and several upper dies having tool plate.
  • the forming energy required for forming the workpiece can be generated via a spindle and a percussion tool or a ram and transferred to the workpiece.
  • the spindle can be motor-driven directly with a motor or with a positively or non-positively connected flywheel.
  • the rotary movement of the spindle is converted into a linear ram movement via a steep multiple thread.
  • an electric drive motor is used to drive the spindle or the flywheel.
  • the US 2003/0167938 A1 describes a hydraulic press with a movable tool carrier, for the production of, for example, compacts, whereby the tool carrier can be designed as a turntable for the production of no components, and the tool carrier for the production of comparatively large components can be designed as a sliding carriage.
  • the DE 1 627 688 A describes a press for the production of head-profiled elements such as bolts, pins, punches and the like. On matrices, it being possible for several matrices to be arranged on a rotary table.
  • the DE 883 552 A describes a die-changing device for open-die forging presses, in which case, for example, two forging saddles, for example a flat saddle and a pointed saddle for carrying out different forging operations, can be arranged on a turntable.
  • a spindle press which comprises a machining head with a plurality of different machining tools that is guided or mounted so that it can move along a movement axis for the forming machining of at least one workpiece.
  • the processing head is attached to a ram or ram of the screw press or designed to be integrated therewith.
  • the processing head comprises a tool plate which is designed to hold the plurality of different processing tools thereon, e.g.
  • the movement axis can, for example, be collinear with the trajectory resulting from the operation of the screw press, i.e. the central movement axis, of the machining head or of a ram or ram coupled thereto.
  • the proposed spindle press also includes a processing area located opposite the processing head with at least one processing station designed to receive and reshape the workpiece.
  • the proposed screw press of the embodiment according to claim 1 further comprises a rotary table having a rotation axis true parallel to the moving direction.
  • the rotary table also includes a plurality of lower tools which are offset relative to one another in the circumferential direction with respect to the axis of rotation. In total For example, there can be three, four or more lower tools in the circumferential direction along a circular line on the turntable.
  • the turntable is designed or arranged and rotatably mounted according to the embodiment of claim 1 such that it is possible by rotating the turntable about the axis of rotation to transfer each of the lower tools into at least one first working position located within the machining area.
  • the workpiece located in the respective first working position can be formed by moving one of the lower tools into a first working position and subsequent operation or subsequent activation of the machining head.
  • the turntable of the embodiment according to claim 1 is designed or arranged and rotatably mounted such that it is possible by rotating the turntable about the axis of rotation to transfer each of the lower tools into at least one, second working position, which is lateral in axial projection with respect to the axis of movement is located outside a or the cross-sectional area of the processing head.
  • the rotary table and the machining head can be arranged and mounted relative to one another in such a way that, viewed in axial projection parallel to the axis of movement of the machining head, the second working position(s) are located such that a lower tool located in a respective second working position is in a direction transverse to the axis of movement is located outside the cross-sectional area.
  • the arrangement of rotary table and machining head and their design can be implemented in such a way that a central axis or an assembly opening designed for feeding and/or holding a workpiece on the lower tool is located laterally outside the cross-sectional area.
  • the axis of movement can, for example, run parallel to the vertical direction, which means in particular that the processing head, and possibly a connected or coupled ram or ram, can be mounted and arranged such that it can move up and down, for example with respect to an upper crosshead.
  • a ram of the screw press may be arranged to be movable back and forth in the axial direction thereof, i.e. along the movement axis, for example periodically, and it may be driven or moved in the axial direction by a screw.
  • a screw Via the spindle, in particular a threaded spindle, which in turn can be driven by a suitable actuator, e.g. a motor or a motor coupled to a flywheel, forming energy can be transferred to a workpiece via the machining tools, in particular in cooperation with corresponding counter-tools of the lower tools .
  • machining head i.e. the machining tools
  • kinetic energy of the machining tools of the machining head and/or the ram or a ram can be converted into useful and lost work for forming the workpiece.
  • the processing area in particular a base area thereof, can have the shape of a circular ring segment or a circular segment with a central angle of at least 180°, preferably a central angle of more than 180°, for example more than 270°. Accordingly the first working positions can/can be located within such a circular ring segment.
  • the second or second working position(s) can be located within a circular ring segment or a circular segment with a central angle of less than 180°, for example less than 90°.
  • the machining tools can be embodied symmetrically with respect to a center plane of the spindle of the spindle press that is parallel to the axis of movement.
  • two machining tools are arranged or can be arranged in such a way that, seen in axial projection, the connecting axis of the centers of two, in particular adjacent, machining tools or machining tool holders run through the center of the spindle circle defined in axial projection by the outer circumference of the spindle.
  • the axis of rotation of the rotary table can be located laterally outside the spindle circle.
  • the processing head is formed or attached to the ram.
  • the at least one second working position is located at least partially laterally outside a cross-sectional area of the ram, as seen in axial projection with respect to the axis of movement.
  • the cross-sectional area of the ram can, for example, be a cross-sectional area which is defined by the dimensions of the ram at the end facing the machining area.
  • the axis of rotation of the turntable is spaced from a ram axis, or spindle axis, parallel to the axis of movement in a direction transverse to the axis of rotation.
  • An offset or distance between the axis of rotation of the rotary table and the, in particular central, ram axis or spindle axis can be, for example, between 360 mm and 375 mm, wherein in configurations a spindle diameter of the spindle can be 600 mm and a diameter of the turntable can be approximately 1400 mm.
  • the spindle axis viewed in axial projection, is located within that circular line on which the center points of the lower tools of the turntable are located.
  • the distance between the axis of rotation and the centers of the lower tools is greater than the distance between the axis of rotation and the ram or spindle axis.
  • a distance between the circular line and the spindle or ram axis can be, for example, in the range between 50 mm and 65 mm, in particular around 57 mm.
  • Forming stations can be set up in such a way that central axes (or: longitudinal axes) of the processing stations or processing tools running parallel to the movement axis, in particular the ram axis, intersect a circular line defined by the axes or central axes of the lower tools.
  • the lower tools on the turntable can Spindle press can be arranged along a circular line, i.e. in a circle with respect to the axis of rotation M D , and can have predetermined angular distances from one another with respect to the axis of rotation of the rotary table, wherein an angular distance between two directly adjacent lower tools can be 60 degrees, 90 degrees or 120 degrees, for example, and where the angular distances can optionally be selected in such a way that the sub-tools are arranged evenly distributed along the circular line.
  • the axes running parallel to the axis of rotation of the turntable or central axes of four processing stations can be located on one half or a semicircle of the circular line.
  • two of the central axes may intersect the center of the circle, and two more of the central axes may intersect a secant of the circle.
  • an axis of rotation of the rotary table, about which it is rotatably mounted on the screw press can be offset parallel to the central axis of the ram and offset parallel to the central axis of the machining head running in the axial direction. It should be noted at this point that the central axis of the ram and the central axis of the machining head do not necessarily have to be aligned with one another.
  • the axis of rotation of the rotary table is set up and positioned in such a way that a lower tool can be transferred to a first working position located in the area of coverage or action of the axial projection of the machining head and/or the ram, and that by rotating the rotary table the lower tool can be moved into a second working position outside, in particular outside the coverage or effective area, of the processing area and different from the first second working position can be transferred.
  • the turntable can be disk-shaped, with an axis of rotation arranged radially offset relative to the longitudinal axis of the ram and/or the machining head.
  • a radius of curvature of the turntable is greater, for example at least twice as large as the cross-sectional radius of the ram and/or the machining head and/or the spindle.
  • the turntable is mounted around an axis of rotation, for example on a forming table, in such a way that the turntable, in particular with regard to its axis of rotation, is located eccentrically to the machining area defined on the forming table by the ram and/or the machining head.
  • the processing head can have several upper tools as processing tools for forming workpiece processing, it being possible for the upper tools to be provided on the processing head, for example, in a symmetrical arrangement with respect to one another.
  • the upper tools can be arranged along an arc of a circle and/or located within a circular ring segment.
  • the turntable has several lower tools.
  • the lower tools in particular the middle points or centers thereof, can be arranged on the rotary table, for example, along a circular line when viewed in axial projection with respect to the axis of movement.
  • upper tools defined circular arc at least partially, for example along a circular arc with a central angle greater than 180 °, or greater than 270 °, together with the defined by the vverKstUcKaurnanmen circular line.
  • the processing area is essentially congruent when viewed in axial projection with respect to the axis of movement is the cross-sectional area of the machining head and/or ram.
  • the dimensions of the machining area can be defined, for example, by the circular diameter of the spindle and/or the ram and/or the machining head.
  • the machining area in particular the extent of the machining area, can be defined or fixed, for example, by the axial projection of the circumference of the ram and/or the circumference of the machining head and/or the circumference of the spindle.
  • the machining head circumference viewed in axial projection with respect to the axis of movement, can lie completely within the circumference of the ram or be congruent with it.
  • the at least one second working position is located outside the effective area or effective volume or stroke area or stroke volume taken up by the axial movement of the ram or machining head.
  • workpieces in the second working position can be fed in comparatively easily or removed from the turntable comparatively simply, without being adversely affected by any axial movements and moving masses of the ram and/or machining head.
  • the spindle diameter measured transversely to the movement axis and/or the machining head diameter is/are smaller than or at most equal to the radius or diameter of the turntable.
  • the midpoints or centers of the machining tools and the further tools in axial projection can lie on a common path, in particular a circular path, when viewed with respect to the movement axis.
  • An angular distance measured with respect to the axial direction between two immediately adjacent upper tools or lower tools can, for example, and in particular in each case, be in the range between 30 degrees and 120 degrees, in particular 30 degrees, 60 degrees or, for example, 90 degrees.
  • the angular distance between adjacent machining tools is an integer fraction of the angular distance between adjacent lower tools.
  • the angular distance between two immediately adjacent lower tools on the rotary table can be an integer multiple of the angular distance between two adjacent machining tools on the machining head.
  • the machining tools and/or sub-tools are preferably evenly distributed, each arranged with the same angular distances from one another.
  • the angular distance between directly adjacent lower tools on the rotary table can be 120 degrees
  • an angular distance between directly adjacent machining tools on the machining head can be 60 degrees.
  • At least one of the at least one second working position is provided and designed for care measures to be carried out on a lower tool located in a second working position.
  • the spindle press can include a care device designed to carry out at least one corresponding care measure, wherein the care device can be designed, for example, to carry out lubrication, cleaning and/or cooling on the respective lower tool
  • the screw press comprises at least one axial drive or at least one lifting unit, which is designed to lift the rotary table of the screw press and/or at least one lower tool and/or at least one coupled to a lower tool To move tool and / or at least one located in a lower tool of the turntable workpiece parallel to the axis of movement of the machining head of the spindle press.
  • the axial drive or the lifting unit can be installed or mounted, for example, at least partially on or in a forming table, on or in a turntable receptacle designed for mounting the turntable on the forming table and/or on or in the turntable.
  • the axial drive or the lifting unit can, for example, comprise at least one, for example motor-driven, reciprocatingly mounted drive ram, through which the turntable, the lower tool and/or the workpiece can be moved parallel to the movement axis.
  • the axial drive can be designed in such a way that a workpiece located in a lower tool, for example, in individual machining stations relative to the Lower tool or raised against the turntable and / or lowered or is.
  • the axial drive can be designed for this be to provide the workpiece in a lowered state in one working position and in a raised state in another, for example subsequent working position.
  • Such an axial drive makes it possible to raise the rotary table, the lower tool and/or a workpiece during, before or after a forming step and/or when moving or turning the rotary table between different working positions.
  • Lifting for example when changing the working position, can be used, for example, to reduce the friction that occurs during twisting between components that are moved relative to one another, for example between the rotary table and the forming table.
  • a corresponding stroke of the axial drive in particular of a drive ram, ejector or lifting bar or ram of the axial drive, can be in the range of approximately 2 mm, for example.
  • the drive ram or rams of the axial drive in the forming table, in or on which the turntable is rotatably mounted are present at at least a first and/or second working position.
  • the drive rams can be longitudinally displaceable in the forming table, e.g. parallel to the axis of movement of the machining head or to the axis of rotation of the turntable.
  • the rotary table, in particular its lower tools can be designed in such a way that they have one or more openings on the side facing the forming table, through which, when positioned in a working position equipped with a driving ram, the driving ram can be moved or reach through in order to relatively to be able to move to the rotary table or the lower tool.
  • the axial drive can also be designed in such a way that in at least one working position the drive ram is lowered in relation to other working positions, so that in one of the working positions assigned Forming operation an expansion of the workpiece material in the direction of the lowered drive ram is possible.
  • the drive ram can, for example, be arranged and designed in such a way that it can be lowered relative to a workpiece support level, for example in the forming table, with the workpiece support level being formed, for example, by a support surface formed between the forming table and the rotary table.
  • the drive ram After appropriate forming and the associated expansion of the workpiece material in the direction of the drive ram, it can be moved in the direction of the rotary table in order to lift the workpiece so that the rotary table can be rotated further and/or for the purpose of subsequent removal of the workpiece from the lower tool.
  • the axial drive can, for example, be designed and set up in such a way that it can move a workpiece located in the respective working position relative to the turntable, in particular lift it or lift it off the lower tool and/or move it in the lower tool.
  • the axial drive can be designed in such a way that, in at least one working position, a workpiece can be moved parallel and/or opposite to the forming movement of the ram. Further configurations and variants of the axial drive result in particular from the description given below of exemplary embodiments in connection with the appended figures.
  • the spindle press also includes a forming table assigned to the processing area, it being possible for the rotary table to be fastened to the forming table by means of an adapter unit or an adapter.
  • the adapter unit is designed and can be coupled to the forming table and the turntable in such a way that the axis of rotation of the turntable is spaced apart from the spindle or ram axis, ie from the central axis of movement of the machining head, ie the turntable is arranged eccentrically with respect to the movement axis.
  • the turntable can be arranged on the forming table, for example on a tabletop or bearing plate, with sliding bearings.
  • a unit formed from the turntable and table top or bearing plate can in turn be fastened to an associated forming table, for example by means of screws.
  • the spindle press includes a spindle designed to drive the machining head.
  • At least one machining tool of the machining head can have a central axis running parallel to the movement axis of the machining head, which, viewed in axial projection, lies laterally inside, at the edge or directly adjacent to the spindle cross-sectional area.
  • a connecting axis of the center points of two, in particular adjacent, machining tools or machining tool holders of the machining head can run through the center point of the spindle circle defined by the outer circumference of the spindle in axial projection.
  • Both the insertion of the workpiece and the removal of the workpiece after forming can take place at second working positions, i.e. at working positions outside the working area of the ram and the upper tools. Apart from that, there can be a further second working position, i.e. a working position located outside the processing area, which is designed and provided for carrying out die care measures such as lubricating, cooling and/or cleaning.
  • the turntable is rotated synchronously with the activation or deactivation of the machining head, preferably by an integer fraction of a full angle, and the direction of rotation of the turntable is preferably reversed at least once during the machining cycle of the workpiece .
  • the turntable and/or at least one lower tool together with the workpiece is/are raised or lowered parallel to the axis of movement of the machining head or the axis of rotation of the turntable .
  • the contact time between Workpiece and tool are reduced, for example to reduce the heat input into the tool.
  • the lower tools are offset from one another by an angle of 120 degrees with respect to the axis of rotation, and a lower tool fitted with a workpiece, starting from the second working position for the forming processing of the workpiece, is successively divided into several, with respect to the axis of rotation is transferred at an angle from first working positions which are offset to one another.
  • first working positions which are offset to one another.
  • four offset first working positions can be traversed according to a movement pattern according to which the lower tool is rotated by rotating the rotary table starting from the or a second working position in a plan view of the rotary table by +60 degrees, i.e.
  • a rotation through an angle of 120 degrees can be carried out, so that a lower tool that has been removed immediately beforehand remains unoccupied, and for example for die care measures such as cooling, lubrication, cleaning, etc., for Available.
  • one of the lower tools in particular precisely one of the lower tools, during a complete operating cycle for producing the workpiece, ie during all the steps required for producing the workpiece comprehensive, operating cycle, in particular always, at least one, preferably exactly one, the lower tools is unoccupied.
  • the lower tool can cool down or care measures can be carried out.
  • the machining tools and lower tools as well as the rotation of the rotary table can be configured with corresponding four forming tools in such a way that in a first rotary position of the rotary table, a preform forging operation and insertion of a workpiece into a lower tool, in a rotary position rotated by +60°, a first taper, a finish forging operation and optionally die care, and in a rotary position rotated by a further -180°, a second taper and removal of a finished formed workpiece is possible.
  • the rotary table can then be rotated by a further -120° and the rotary positions described can be run through again.
  • three lower tools can be arranged offset from one another at an angular distance of 120 degrees, with adjacent first working positions corresponding to the position of the machining tools, for example by an angular distance of 60 degrees can be arranged offset to each other.
  • a ram coupled to a spindle of the screw press can be moved relative to a lower support or tool table through the spindle be designed to be movable in a straight line in order to transmit a forming force to at least one workpiece arranged on the turntable.
  • a plurality of lower tools can be offset from one another in the circumferential direction at the same basic angle of rotation to be available.
  • the rotary table is mounted such that it can be moved about an axis of rotation, the axis of rotation being offset parallel to a spindle axis of the screw press.
  • the circular path can be arranged in such a way that it lies with part of a circular sector, or that an arc of the circular path lies within a spindle circle defined by the spindle or by an axial projection of a spindle circle.
  • the arc of a circle in which the spindle circle lies can, for example, span an angle of less than 90 degrees, or for example less than 60 degrees.
  • the turntable has three lower tools for which six different approach positions are provided, wherein at least one, for example two of the six approach positions can be designed as second working positions.
  • the ratio of the number of lower tools and the number of approach positions can be an integer, as in the present example, but non-integer ratios are also conceivable.
  • At least two approach positions i. H. two working positions, into which the lower tools can be brought by rotating the rotary table, are designed as second working positions.
  • Appropriate approach positions can be used, for example, for loading or unloading and/or for die care.
  • At least one workpiece is placed in at least one lower tool arranged on the Drentiscn, and that the Drentiscn is moved around its axis in such a way that that the lower tool carrying the workpiece is positioned in a first working position, with at least one further lower tool being positioned in a second working position.
  • the workpiece in question can be machined, for example by carrying out one or more machining steps, for example by working on the ram, e.g. on an underside of the ram and/or on an underside of a Processing head, arranged upper tools.
  • the ram can be moved in an axial, linear movement towards the turntable, so that the upper tool can act on the workpiece located in the lower tool, whereby the joint action of the upper tool and lower tool and the force generated by the ram cause the workpiece to be e.g can be reshaped.
  • a comparatively high-quality machining of workpieces can be achieved both quantitatively and qualitatively.
  • An offset, i.e. eccentric, arrangement of the axis of rotation of the rotary table and spindle, ram and/or machining head with respect to the transversal makes it possible, in particular, for a workpiece to be machined to be rotated into different working positions, including at least one second working position which, for example, is used for machining and Disassembling with workpieces can be used.
  • the processes described can be carried out approximately parallel to one another, for example during a processing step or cycle, depending on requirements. For example, while a workpiece is being machined or formed in a lower tool by the force of the ram, another workpiece can be removed from another workpiece holder in the second working position or another workpiece holder in the second working position, a new workpiece can be fitted.
  • the number and arrangement of the working positions or approach positions, and thus in particular also the number and arrangement of the lower tools, can be variable, with the rotary table being able to have corresponding receptacles for lower tools, for example.
  • the inventive eccentric arrangement of the axis of rotation of the rotary table with respect to the machining area makes it possible to position a lower tool arranged on the rotary table, and thus a workpiece accommodated therein, for example for a first machining or forming process in the area of a spindle circle in the area of the screw press, i.e. in the middle of the machining area, to position arranged machining tool, and to position the workpiece of the spindle circuit of the screw press in another machining process.
  • forming operations that require comparatively high forming forces can be carried out in or near the spindle circle, while forming operations with comparatively low forming forces can be carried out in areas that are further away from the spindle circle.
  • movement curves can be used which, compared to the diameter of the ram or machining area, have a significantly larger radius of curvature, for example larger by a factor of 2, than comparable rotary tables with an arrangement concentric to the respective machining head.
  • the machining tools mentioned herein can be designed according to the shape desired for the respective workpiece.
  • the upper tools can be designed as hollow cones and the like. It is also possible for an upper tool to be designed as a manipulator designed to grip the workpiece.
  • the upper tools on the ram or machining head are arranged on a circular path whose curvature corresponds to the curvature of the circular path on the turntable defined by the workpiece holders.
  • the angular spacing of the lower tools on the rotary table is selected in such a way that processing steps, in particular forming steps, are carried out at least partially in parallel.
  • the axial drive described above for the workpieces and/or lower tools and/or the lifting device or unit for the turntable can, for example, comprise one or more lifting cylinders, which are set up in such a way that the workpiece, the lower tool and/or the turntable, for example together with the workpiece, can be raised and lowered in the axial direction, for example parallel to the axis of movement of the machining head or the ram.
  • the hydraulic cylinder can lift the workpiece, the lower tool and/or the turntable when transferring to another working position.
  • a stroke can be in the range of a few millimeters, for example approximately 2 mm, or a few centimeters.
  • it can be provided in configurations of the method that during at least one processing step and/or at least between two processing steps the turntable and/or the lower tool together with the workpiece or only the workpiece is/are raised or lowered parallel to the movement axis.
  • Each lower tool of the rotary table can be assigned its own axial drive unit in configurations, for example integrated into the forming table, so that workpieces are specifically raised in the respective working positions or can be lowered.
  • the axial drive can be activated or deactivated, for example depending on the type of the respective working position and in particular independently of other working positions.
  • the lifting device can, for example, be set up in such a way that it can be used independently of specific processing steps and/or approach positions.
  • the axial drive and/or the lifting unit can be activated in such a way that the workpiece, the lower tool and/or the rotary table is/are placed on a forming table, a base plate or a press plate of the screw press during the forming process itself rests on/s, so that the torques otherwise acting on the rotary table and the axis of rotation due to the eccentric arrangement of the axis of rotation are at least reduced, preferably completely avoided.
  • the turntable arrangement proposed here it is in particular possible for the turntable to have such a number of lower tools that, during proper operation, at least one lower tool is or can remain unoccupied in at least one machining step. For example, a care measure, as already explained above, can be carried out on the unoccupied lower tool.
  • the lower tools and forming positions can be selected, for example, in such a way that at least one of the lower tools is positioned outside the forging or forming area, in a second working position, during each forging or forming process.
  • a finished forged workpiece can be removed comparatively easily or a blank can be inserted into a free lower tool without a loading and unloading device such as a robot arm working in the immediate vicinity or within the movement range of the ram would have to.
  • a corresponding configuration in which there is always a Lower tool is outside the working area of the ram in a second working position can be achieved, for example, by increasing the length of the circular line of the turntable on which the lower tools are located, for example by 1/6 to 1/3, in particular by 1/4 to 1/3 is greater than the circular arc of this circular line covered by the cross-sectional area of the machining head or by the machining area or working area of the ram.
  • An unoccupied lower tool can, for example, be cleaned, cleaned, cooled, etc. in the unoccupied state.
  • die maintenance such as cooling or lubrication, can be implemented, whereby wear on the tool can be minimized and/or the manufacturing quality can be improved.
  • FIG. 1 to FIG. 14 are denoted by the same reference numerals.
  • the screw press 13 comprises a ram 9 mounted on a frame 14 and a crosshead 15 in a motor-driven manner for performing an up and down movement, on the underside of which a machining head 16 with at least one upper tool holder 10 is arranged or fastened.
  • the processing area 17 of the spindle press 13 is located in the axial projection below the processing head 16 or the ram 9, the diameter and transverse extent of which is approximately the same in the present case.
  • the screw press 13 also includes a rotary table 1 arranged below the ram 9 or the spindle (not shown) provided for driving the ram 9 on a lower forming table or carrier 5, such as a table top be.
  • the rotary table 1 is rotatably mounted about an axis of rotation M D , the axis of rotation M D being offset transversely with respect to a spindle axis M S of the spindle available for driving the ram 9 , ie spaced transversely to the axial direction of the spindle axis M S .
  • the spindle axis M S coincides with the movement axis of the machining head 16 .
  • the second working position(s) 20 is (are) located laterally outside of the cross-sectional area Q of the machining head 16 in axial projection with respect to the movement axis Ms, the cross-sectional area Q of the machining head 16 being congruent with the cross-sectional area Q of the ram 9, as in the example shown can.
  • the first working position(s) 19 are arranged within the cross-sectional area Q when viewed in axial projection.
  • a drive unit 21 is coupled to the turntable 1 for driving the turntable 1, particularly in a synchronized manner with the up and down movement of the ram 9, for example, to rotate the turntable 1 in a clockwise or counterclockwise motion.
  • the drive unit 21 can also have a lifting unit (see Fig. FIG. 5 to FIG. 7 ) with which the rotary table 1 and/or the lower tools 8 and/or the workpieces 11 located in the lower tools can be raised and lowered in the axial direction.
  • FIG. 1 shows a plan view of the rotary table 1, which is arranged rotatably on the lower carrier 5, for example a forming table or a press plate, as a component of the screw press 13.
  • a circular path 2 is indicated within the area of the turntable 1 , on which several approach positions 4 or working positions are provided, which can be approached along the circular path 2 by rotating the turntable 1 .
  • the circular path 2 is also divided into several circular sectors 3 of equal size, which are defined by a basic angle of rotation a. These give the same time Distance or opening angle between the individual approach positions 4, which are arranged at the respective ends of the circular arc of the circular sectors 3.
  • the value of the basic angle of rotation ⁇ can be adapted to the respectively required number of approach positions 4, for example 60 degrees, or else 90 degrees or 120 degrees.
  • FIG. 2 shows the same representation of the turntable 1 with an exemplary occupation with lower tools 8, or workpiece holders, on the turntable 1.
  • the lower tools 8 are for loading or equipping with (in FIG. 4 shown) workpieces 11 and for transport to a designated approach position 4 in order to be able to machine the workpieces 11, e.g.
  • FIG. 3 shows a top view of a ram 9 or machining head 16, which can be moved in a straight line along the movement axis Ms relative to the lower support 5 for machining a workpiece 11, for example by being coupled to a spindle (not shown).
  • the plunger 9 is not the one shown Limited shape and can, for example, be formed around.
  • the representation of the spindle or ram 9 or the machining area 17 is limited to a circular area denoted here by the spindle circle 7, which corresponds to the diameter of the spindle or its projection, with the spindle axis M S intersecting the transverse to the movement axis running ram axes A1 and A2 of the ram 9 coincides.
  • the center of the ram 9 and the spindle, or the spindle circle 7, thus coincide in the present example.
  • the circular path 2 runs around an axis of rotation M D of the turntable 1, which is arranged offset parallel to the spindle axis M S in such a way that at least one circular segment of a circular sector 3 is always located within the spindle circle 7, in particular in the machining area 17, while at the same time the Circular path 7 and thus at least one approach position 4 over the edge of the ram 9, in particular the processing area 17, protrudes.
  • the radius R D of the rotary table 1 is, for example, twice as large as the diameter D S of the spindle and about the same size or larger than half a side length L of the ram 9.
  • the rotary table 1 is, as in FIG. 3 shown, arranged eccentrically to the spindle axis M S , ie spindle axis M S and axis of rotation M D of the turntable 1 are spaced apart.
  • the circular line 2 can, as in particular FIG. 1 and 2 can be removed, lie on the turntable 1 slightly outside of half the radius length of the turntable 1, the diameter of the lower tools 8 being slightly smaller, for example 1/4 smaller than the radius of the turntable 1.
  • a lower tool 8 it is thus possible, for example, for a lower tool 8 to be in a central position below the ram 9 and thus below a machining tool connected to the ram 9 during machining that a maximum load or force load can be applied to the workpiece 11 for forming.
  • a first working position 19 that is comparatively centered with respect to the ram axis MS for example within the spindle circle 7, can be used for finishing, in particular for a finish forging process, while first working positions 19 that are further away from the ram axis MS are used to produce preforms and other upstream ones Forging processes can be used in which comparatively small forming forces or forging forces occur.
  • Another lower tool 8 is located outside of the cross-sectional area Q of the machining head 16 or the ram 9, viewed in axial projection, in particular outside of the machining area 17, where the workpiece 11 can be removed from the lower tool 8 in an operating area 6, for example.
  • an empty lower tool 8 in this operating area 6 can be equipped with a workpiece 11 to be machined, also e.g. B. while another workpiece 11 at a first working position 19 just taking place forming process. It is also possible to carry out die care on the lower tools 8 at an approach position located in the operating area 6 or outside the machining area 17, for example for cleaning, lubricating and/or cooling the lower tools 8.
  • the ram 9 comprises a plurality of upper tool holders 10 with upper tools 22 inserted therein, which interact with the lower tools 8 during machining.
  • the upper tool holders 10 and upper tools 22 are arranged along a circular path 7 analogously to the lower tools 8 .
  • the number and design of the upper tools 22 can be varied as desired depending on the intended use and is not limited to the exemplary representation of this description.
  • Upper and lower tools as well as approach positions are aligned with one another with respect to the axial direction, ie in the direction of the movement axis M S , with directly adjacent upper and lower tools or approach positions can have an angular spacing of 120 degrees or 60 degrees.
  • FIG. 4 shows an exemplary sequence of stages in the forming processing of a workpiece 11 into a stub shaft.
  • the stage a 0 shows the workpiece 11 in the unmachined initial form.
  • the workpiece 11 undergoes a first and a second coning process, respectively.
  • the tapered workpiece is preformed and at stage d the preformed workpiece 11 is finish forged into the final shape comprising a shank with a head formed thereon.
  • the upper tool holders 10a, 10b, 10c and 10d arranged by way of example in FIG. 3 are designed according to these forming stages and interact in a corresponding manner with the lower tools 8 arranged on the turntable 1, which take up the workpieces 11 and are brought into the corresponding approach position 4 by rotating the turntable 1.
  • the upper tool holders 10a and 10b for generating the workpiece stages a and b are located in the eccentric area of the ram 9 and outside of the spindle circle 7.
  • the central axes of the tool holders 10a and 10b intersect the center of the circular path 2.
  • the workpiece stages c and d are positioned at approach positions 4 within or near the edge of the spindle circle 7 in order to be able to reliably absorb the comparatively greater forming forces. Additionally is in FIG. 3 a gripping tool 10e shown, which is designed for Removal or insertion of a workpiece 11 into a lower tool 8 in the surgical area 6.
  • FIG. 5 to 7 the construction of upper and lower tools according to the exemplary embodiment is illustrated in more detail.
  • FIG. 5 shows the ram 9 comprising the upper tool holders 10a and 10b with upper tools 22, which in the present exemplary embodiment have conical surfaces 23 with different cone angles.
  • the workpieces 11 are placed in the lower tools 8 , the lower tools 8 being clamped or fixed in tool holders 24 , for example chucks and the like, so that the lower tools 8 are supported on the turntable 1 via the tool holders 24 .
  • the workpieces 11 can be rotated together with a rotation of the turntable 1 relative to the lower support 5, i. H. the table top, are moved into corresponding approach positions 4 under the respective upper tools 22 located in the upper tool holders 10a to 10d.
  • the rotary table 1 and the lower support 5 have axial openings at the respective working positions or approach positions 4, which in the present example are arranged centrally and are aligned parallel to the spindle axis in the respective approach position.
  • the axial openings can be provided as a displacement volume into which excess material can escape during the forming process when the forming tools are closed.
  • the openings can be designed in such a way that a part of the workpiece 11, for example a shank of the workpiece 11 extending from a plate produced by the forging processes, can be accommodated therein.
  • a respective socket 26 is mounted in a longitudinally displaceable manner along the respective opening, which is illustrated in the figures by a double arrow.
  • the socket 26 is at least in the working positions of FIG. 5 and FIG. 6 on a sliding strip 27 embedded in the lower support 5, along which, for example, the bushing 26 can slide during one of the rotary movements of the turntable 1.
  • the sliding strip can be interrupted, for example, and the bushing 26 can be removed with the lifting ram 12 lowered, as in FIG FIG. 7 shown, immerse in a lower support 5, ie the table top, introduced recess 28 or recess, or a deeper recording.
  • the bushing 26 can be coupled to the lifting ram 12 or power ram 12 so that the bushing 26 can be retracted into the recess 28 with it.
  • the bushing 26 can, for example, be designed to be displaceable by a distance of 10 mm to 20 mm or less, so that, for example during a forming process, material displaced from the forming volume can be re-injected in the axial direction.
  • the degree of lowering of the bushing 26 can be adapted, for example, to the requirements relating to mass displacement or material flow required for a particular workpiece as a result of a forming process.
  • the degree to which the bushing 26 is lowered can be set, for example, by setting the drive tappet 12 accordingly.
  • a forged bushing 29 is arranged in the depression 28 .
  • the length of the forged bushing 29 is chosen such that the bushing 26 facing end of the forged bushing 29 in the assembled state as in FIG FIG. 7 shown, is set back in relation to the edge of the depression 28, such that the offset between the end of the forged bushing 29 and the edge of the depression 28 corresponds to that length by which the bushing when re-shooting in the depression 28 is immersed.
  • the forged bushing 29 can, as in FIG. 7 be arranged coaxially to the movement axis or spindle axis M S and concentrically to the drive ram 12 shown.
  • the forged bushing 29 can be inserted into the depression so that it can be exchanged, so that forged bushings 29 of different lengths can be used, so that the degree of re-shooting can be changed by inserting forged bushings of different lengths into the depression.
  • FIG. 7 The operating state shown, in which the bushing 26 is immersed in the recess 28, the bushing 26 rests on the forged bushing 29.
  • the forged bushing 29 can be viewed as a depth stop for the bushing 26 when re-shooting.
  • the volume of the opening in which the bushing 26 is arranged can be increased.
  • An increase in the volume of the opening is particularly necessary or useful when an associated forging or forming process leads or can lead to the material of the machined workpiece 11 having to escape from the forming zone into the opening when the forging tools 8, 22 are closed. which in the example shown during the finish forging of the workpiece 11, specifically the plate of the workpiece 11, in the approach position FIG. 7 can occur.
  • Lowering the bushing 26 is also advantageous insofar as it is possible in this way to compensate for, for example, tolerance-related differences in the length of the unmachined workpieces (a 0 ).
  • the bushing 26 can be raised by moving the lifting ram 12 in such a way that the bottom of the bushing 26 is at the level of the upper side of the sliding strip 27 and can slide on it, so that the rotary table 1 can continue to rotate is or will
  • the workpiece e.g.
  • FIG. 6 is the preforming process
  • FIG. 7 Finish forging for the workpiece stages c and d shown with the respective upper and lower tools.
  • the correspondingly shaped upper tools 22 are arranged on the ram 9 on corresponding upper tool holders 10c and 10d in order to be able to machine the workpiece 11 .
  • the upper tool 22 inserted into the upper tool holder 10c has a rectangular forming zone 25, and the upper tool 22 inserted into the upper tool holder 10d has a negative shape corresponding to the target shape of the workpiece 11 as forming zone 25.
  • the ram 9 is moved relative to the axis of rotation M D of the turntable 1 by means of the operative connection to the spindle, not shown, in order to exert a force on the workpieces 11 via the upper tools 22, which is Lower tools 8 are included and are positioned on the circular path 2 in an approach position 4 each exactly below the corresponding upper tools 22 for forming processing.
  • the workpieces 11 can be operatively connected to the lifting ram 12 in the respective approach position 4 .
  • the lifting tappet 12 can, for example, comprise a lifting cylinder and be set up in such a way that the workpiece 11 can be lifted in a targeted manner.
  • the workpiece 11 can be raised immediately after forming and lowered again when the next forming position is reached.
  • the workpiece 11 is lifted at least during the movement of the workpiece 11 between the approach positions 4, so that the formed section is lifted from the lower tool 8, whereby, for example, the heat input into the lower tool 8 can be reduced.
  • the lifting ram 12 can also be used as an ejector rod or ram in order to lift the workpiece 11 after completion, so that it can be removed more easily from the lower tool 8 in the second working position 20, for example.
  • the lifting ram 12 is not limited to use for a parallel offset rotary table 1, but can also be used in the same way for a centrally arranged rotary table, i.e. a rotary table whose axis of rotation coincides with the spindle axis of the screw press.
  • a lifting function and lifting device can also be used in the case of a linear conveyance of the workpieces 11, in particular in the case of forming devices without a rotary table.
  • the rotary table 1 together with the lower tool holders or workpiece holders 8 and any lower tools 8 located therein can be designed to be raised parallel to the axis of rotation M D or spindle axis M S .
  • the friction occurring between the table top and the turntable 1 when the turntable 1 rotates can be at least reduced.
  • a correspondingly designed lifting unit can comprise, for example, one or more rollers which are accommodated in or on the lower support 5, i.e. the table top, and which lift the turntable 1 relative to the lower support 5 when actuated.
  • the lifting unit can, for example, comprise four rollers.
  • a stroke of the lifting unit can be 2 mm, for example.
  • FIG. 8 to FIG. 13 show a machining sequence in steps I to VI of workpieces 11 according to an exemplary embodiment in which lower tools 8a, 8b and 8c are arranged along circular path 2.
  • lower tools 8a, 8b and 8c are arranged along circular path 2.
  • approach positions 4 at the respective points of the circular arc of the circular sectors 3 of the circular path 2 on the turntable 1, which can be approached by the lower tools 8a, 8b and 8c by rotating the turntable 1 accordingly, in order to move them together with the inserted workpieces 11a, 11b , 11c below an upper tool 22 according to FIG FIG. 3 to position for the purpose of processing.
  • the basic angle of rotation ⁇ is 60 degrees. It is now possible to move the rotary table 1 in rotary steps D with positive or negative multiples of the basic angle of rotation a, in order to bring the lower tools 8a, 8b and 8c into the corresponding machining positions.
  • step I after FIG. 8th the lower tool 8a is in the operating area 6 and a workpiece 11a in the state a 0 is inserted into it by means of the gripping tool 10e.
  • a workpiece 11b that has already been placed in the lower tool 8b and is already in workpiece stage b is subjected to preforming for workpiece stage c.
  • the lower tool 8b is located essentially within the spindle circle 7, so that it is in a central position below the ram 9, so that comparatively high forming forces can be applied.
  • the lower tool 8c initially remains unoccupied.
  • the tool for inserting the workpiece can be provided with a robot arm, for example, which can be moved automatically and synchronously with the ram 9 or the forming cycle or the forming movements of the ram 9, but independently of the specific movement of the ram 9.
  • step II after FIG. 9 the rotary table 1 is moved in a rotary step D by 1 ⁇ 60 degrees to the left, ie +60 degrees.
  • the lower tool 8b is now in a second approach position 4 essentially within the spindle circle 7 and the inserted workpiece 11b is finish-forged for the workpiece stage d by the upper tool 22 of the upper tool holder 10d to the final shape.
  • the workpiece 11a placed in the lower tool 8a is subjected to the first taper for the workpiece stage a by the upper tool 22 of the upper tool holder 10a.
  • die care eg cooling, lubrication, cleaning, etc., can be carried out on the unoccupied lower tool 8c.
  • the rotary table 1 is moved in a rotary step D by 3x60 degrees to the right, ie -180 degrees.
  • the lower tool 8a is now in an approach position 4 below the upper tool 22 of the upper tool holder 10b for the second coning of the workpiece 11b for workpiece stage b.
  • the lower tool 8b is located in the operating area 6 for removing the finished workpiece.
  • step IV after FIG. 11 the rotary table is moved in a rotary step D of 2x60 degrees to the right, i.e. -120 degrees, so that the previously unoccupied lower tool 8c can be loaded with an unmachined workpiece 11c using the gripping tool 10e, while the lower tool 8a is located within the spindle circle 7 for Preforming the inserted workpiece 11.
  • the lower tool 8b emptied in step III also remains unoccupied in the subsequent steps V and VI in order to be able to carry out die maintenance, for example in step V. In the other unoccupied positions, the lower tool 8b or die can cool down for a subsequent operation.
  • the rotary table After preforming to workpiece stage c (cf. FIG. 11 ) the rotary table is rotated 1x60 degrees counterclockwise, ie +60 degrees, and is thus positioned under the upper tool 22 set in the upper tool holder 10d, where the work 11a is finish forged by operating the upper tool 22 to the work stage d.
  • the rotary table 1 is rotated further by 3x60 degrees to the right, i. H. -180 degrees, whereby the workpiece 11a is brought into the second working position, in which it can be removed from the lower tool 8a.
  • the processing and forming of further workpieces can be repeated analogously to steps I to VI explained above.
  • the turntable 2 ⁇ 60 degrees to the right, ie -120 degrees are further rotated, and the lower tool 8 then located in the second working position 20 is loaded.
  • the lower tool 8a from which a finish-forged workpiece 11a is removed initially remains unoccupied in order to be able to carry out die maintenance on it, for example.
  • the diameter of the spindle can be 600 mm, for example.
  • the spindle press can be designed in such a way that the spindle has a maximum stroke of approx. 550 mm.
  • a support plate 16 designed to accommodate upper tools can have a width and/or length of approximately 1250 mm transversely to the spindle axis Ms, with a center distance between adjacent tool receptacles for upper tools being approximately 425 mm.
  • a thickness of the lower support, i.e. the table top can be around 250 mm for a thickness of the turntable of around 400 mm.

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Claims (15)

  1. Presse à vis (13) comprenant
    a) une tête d'usinage (16) guidée de manière mobile le long d'un axe de déplacement pour l'usinage par déformation d'au moins une pièce (11), comprenant une plaque porte-outils avec plusieurs outils d'usinage (22) différents qui y sont fixés, dans laquelle
    a') la presse à vis (13) comprend un coulisseau (9) et la tête d'usinage (16) est formée ou montée sur le coulisseau (9), et
    b) une zone d'usinage (17) opposée à la tête d'usinage (16) avec au moins un poste d'usinage conçu pour l'usinage par déformation de la pièce à usiner (11), et comprenant en outre
    c) une table tournante (1) avec un axe de rotation (MD) parallèle à la direction de déplacement, l'axe de rotation (MD) étant espacé de l'axe de broche ou de coulisseau (MS) s'étendant parallèlement à l'axe de déplacement dans une direction transversale à l'axe de rotation (MD), et plusieurs outils inférieurs (8) disposés de manière décalée les uns par rapport aux autres dans la direction circonférentielle par rapport à l'axe de rotation (MD), où
    d) une table tournante (1) est monté de manière à pouvoir tourner, dans lequel
    e) la distance angulaire des outils inférieurs (8) sur la table tournante (1) est choisie de telle sorte que des étapes de formage peuvent être exécutées au moins partiellement en parallèle dans le temps, et dans lequel
    f) les outils d'usinage (22) sont positionnés de telle sorte que des opérations de formage nécessitant des forces de formage comparativement élevées peuvent être exécutées dans la zone du centre du coulisseau et que des opérations de formage nécessitant des forces de formage comparativement faibles peuvent être exécutées dans des zones plus éloignées du centre du coulisseau, caractérisé en ce que la table tournante (1) est conçue de telle sorte, que chacun des outils inférieurs (8) peut être amené, par rotation de la table rotative (1), dans au moins une première position de travail (19) située à l'intérieur de la zone d'usinage (17), et dans au moins une deuxième position de travail (20) qui, en projection axiale par rapport à l'axe de déplacement (MS), est située latéralement à l'extérieur d'une surface de section transversale (Q) de la tête d'usinage (16).
  2. Presse à vis (13) selon la revendication 1, dans laquelle la table tournante (1) et la tête d'usinage (16) sont configurées de telle sorte qu'un outil inférieur (8) conçu pour l'amenée et/ou le maintien d'une pièce (11) est situé latéralement à l'extérieur de la surface de section transversale (Q) de la tête d'usinage (16) dans la deuxième position de travail (20).
  3. Presse à vis (13) selon la revendication 1 ou 2, dans laquelle ladite au moins une deuxième position de travail (20) est en outre située latéralement à l'extérieur d'une surface de section transversale (Q) du coulisseau (9) en projection axiale par rapport à l'axe de déplacement (MS).
  4. Presse à vis (13) selon l'une des revendications 1 à 3, comprenant la table tournante (1) avec des sous-outils (8), les sous-outils (8) étant disposés sur la table tournante (1) de la presse à vis (13) le long d'une ligne circulaire (2), et présentant des écarts angulaires prédéterminés les uns par rapport aux autres par rapport à l'axe de rotation (MD) de la table tournante (1), un écart angulaire entre deux sous-outils (8) directement voisins étant de préférence de 60 degrés, 90 degrés ou 120 degrés, et les sous-outils (8) étant de préférence répartis uniformément le long de la ligne circulaire (2), et/ou l'axe de la broche ou du coulisseau étant situé, en option, vu en projection axiale, à l'intérieur de la ligne circulaire (2) sur laquelle sont situés les centres des sous-outils (8) de la table rotative (1).
  5. Presse à vis (13) selon l'une des revendications 1 à 4, dans laquelle au moins l'une des au moins une deuxième position de travail (20) est prévue et configurée pour effectuer des mesures d'entretien sur un outil inférieur (8) se trouvant dans ladite une deuxième position de travail (20), la presse à vis (13) comprenant en option un dispositif d'entretien configuré pour effectuer au moins une mesure d'entretien correspondante, le dispositif d'entretien étant configuré en option pour effectuer une lubrification, un nettoyage et/ou un refroidissement sur l'outil inférieur (8) respectif.
  6. Presse à vis (13) selon l'une des revendications 1 à 5, comprenant au moins un entraînement axial (12) ou au moins une unité de levage (12), qui est conçu(e) à cet effet, à déplacer la table tournante (1) de la presse à vis (13) et/ou au moins un outil inférieur (8) et/ou au moins une pièce (11) se trouvant dans l'outil inférieur (8) parallèlement à l'axe de déplacement de la tête d'usinage (16) de la presse à vis (13), l'entraînement axial (12) ou l'unité de levage (12) étant de préférence au moins en partie sur ou dans une table de formage (5), sur ou dans un logement de table rotative conçu pour le montage de la table rotative (1) sur la table de formage (5) et/ou sur ou dans la table tournante (1), l'entraînement axial (12) ou l'unité de levage (12) comprenant en option au moins un poussoir d'entraînement (12) logé de manière mobile en va-et-vient par lequel la table rotative (1), le logement de pièce (8), l'outil inférieur (8) et/ou la pièce (11) peuvent être déplacés parallèlement à l'axe de déplacement.
  7. Presse à vis (13) selon la revendication 6, comprenant au moins un coulisseau (12), la table tournante (1) étant disposée sur une table de formage (5) qui présente, sur le côté tourné vers la table tournante (1), un ou plusieurs ajours (28) à travers lesquels le au moins un poussoir d'entraînement (12) peut se déplacer ou être déplacé. de sorte que la pièce à usiner (11) correspondante peut être déplacée par rapport au plateau tournant (1) ou à l'outil inférieur (8) lorsqu'elle est positionnée dans une position de travail équipée d'un poussoir (12).
  8. Presse à vis (13) selon la revendication 6 ou 7, dans laquelle l'entraînement axial (12) est conçu de telle sorte que, dans au moins une position de travail (8), le poussoir (12) peut être abaissé par rapport à d'autres positions de travail (8), de sorte que, lors d'une opération de formage associée à la position de travail (8), une dilatation du matériau de la pièce est possible en direction du poussoir abaissé (12), le poussoir d'entraînement (12) étant disposé et conçu en option de telle sorte qu'il puisse être abaissé par rapport à un niveau d'appui de la pièce, et qu'après un formage correspondant et une dilatation correspondante du matériau de la pièce en direction du poussoir d'entraînement (12), le poussoir d'entraînement (12) puisse être déplacé en direction de la table rotative (1).
  9. Presse à vis (13) selon l'une quelconque des revendications 1 à 8, comprenant une table de formage (5) associée à la zone d'usinage (17), ou, si elle dépend de la revendication 6 ou 7, la table de formage (5) selon une configuration selon la revendication 6 ou l'autre. selon la revendication 7, la table tournante (1) étant fixée à la table de formage (5) au moyen d'une unité d'adaptation, l'unité d'adaptation étant réalisée et pouvant être couplée à la table de formage (5) et à la table tournante (1) de telle sorte que l'axe de rotation (MD) de la table rotative (1) est disposé à distance de l'axe de la broche ou du coulisseau (MS).
  10. Presse à vis (13) selon l'une des revendications 1 à 9, comprenant une broche conçue pour l'entraînement de la tête d'usinage (16), au moins un outil d'usinage (22) de la tête d'usinage (16) présentant un axe médian s'étendant parallèlement à l'axe de déplacement (MS), lequel, vu en projection axiale, est situé latéralement à l'intérieur, au bord ou directement à proximité de la surface de la section transversale de la broche (7), et/ou dans lequel, vu en projection axiale, un axe de liaison des centres de deux outils d'usinage (22) ou logements d'outils d'usinage, en particulier voisins, passe par le centre du cercle de la broche (7) défini en projection axiale par la périphérie extérieure de la broche.
  11. Procédé d'usinage par déformation d'une pièce (11) avec une presse à vis (13) selon l'une des revendications précédentes, comprenant les étapes suivantes:
    a) transférer de l'un des outils inférieurs (8) de la table rotative (1) dans l'une de la au moins une deuxième position de travail (20) située latéralement à l'extérieur de la surface de section (Q) de la tête d'usinage (16) par rotation de la table rotative (1) autour de son axe de rotation (MD);
    b) mettre en place de la pièce (11) dans l'outil inférieur (8) se trouvant dans la deuxième position de travail (20);
    c) faire tourner la table tournante (1) autour de son axe de rotation (MD) de telle sorte que la pièce à usiner (11) soit transférée de la deuxième position de travail (20) à l'une des au moins une première position de travail (19);
    d) activer la tête d'usinage (16, 10) pour l'usinage par déformation de la pièce à usiner (11);
    e) en option, faire tourner le plateau tournant (1) autour de son axe de rotation (MD) et transférer la pièce (11) dans une autre première position de travail (19),
    f) transférer de la pièce à usiner (11) dans la deuxième position de travail (20), ou dans une autre deuxième position de travail (20) située latéralement en dehors de la surface de section transversale de la tête d'usinage (16); et
    g) prélever la pièce à usiner (11) de l'outil inférieur (8) se trouvant dans la deuxième position de travail (20) ou dans une autre deuxième position de travail (20), où
    h) des opérations de formage nécessitant des forces de formage comparativement élevées sont effectuées dans la zone du centre du coulisseau, et des opérations de formage nécessitant des forces de formage comparativement faibles sont effectuées dans des zones plus éloignées du centre du coulisseau.
  12. Procédé selon la revendication 11, dans lequel
    a) la table tournante (1) est tournée de manière synchrone pour l'activation ou la désactivation de la tête d'usinage (16, 10), de préférence à chaque fois d'une fraction entière d'un angle complet, et le sens de rotation de la table tournante (1) étant de préférence inversé au moins une fois pendant le cycle d'usinage de la pièce (11), et/ou
    b) au moins un des sous-outils (8), en particulier un sous-outil (8), est inoccupé pendant un cycle de fonctionnement complet pour la fabrication de la pièce, en particulier toujours, au moins un, de préférence exactement un, des sous-outils (8).
  13. Procédé selon la revendication 11 ou 12, dans lequel les outils inférieurs (8) sont décalés les uns par rapport aux autres d'un angle de 120 degrés par rapport à l'axe de rotation (M0), et un outil inférieur (8) équipé d'une pièce à usiner (11) est transféré successivement dans plusieurs premières positions de travail (19) décalées les unes par rapport aux autres d'un angle de 60 degrés par rapport à l'axe de rotation (M0), en partant de la deuxième position de travail (20) pour l'usinage par déformation de la pièce à usiner (11), de préférence quatre premières positions de travail (19) décalées les unes par rapport aux autres étant traversées selon un modèle de mouvement selon lequel l'outil inférieur (8) est tourné de +60 degrés, +180 degrés ou -180 degrés, -120 degrés et +60 degrés par rotation de la table tournante (1) en partant de la deuxième position de travail (20), et est ensuite transféré à nouveau dans la deuxième position de travail (20) par une rotation d'un angle de -180 degrés ou +180 degrés pour le prélèvement de la pièce (11).
  14. Procédé selon l'une quelconque des revendications 11 à 13, dans lequel au moins l'une desdites au moins une deuxième position de travail (20) est prévue pour effectuer des opérations d'entretien sur un sous-outil (8) situé dans ladite une deuxième position de travail (20), et dans lequel le procédé comprend en outre l'exécution d'une opération d'entretien sur un sous-outil (8) situé dans ladite une deuxième position de travail (20), ladite opération d'entretien comprenant éventuellement une lubrification, un nettoyage et/ou un refroidissement dudit sous-outil (8).
  15. Procédé selon l'une des revendications 11 à 14, dans lequel, pendant au moins une étape d'usinage et/ou au moins entre deux étapes d'usinage, la table tournante (1) et/ou l'outil inférieur (8) est/sont soulevé(s) ou abaissé(s) avec la pièce (11) ou uniquement la pièce (11) parallèlement à l'axe de déplacement.
EP16763255.3A 2015-10-06 2016-09-08 Presse à vis et procédé pour l'usinage de pièces par mise en forme Active EP3359316B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015116974.6A DE102015116974A1 (de) 2015-10-06 2015-10-06 Umformvorrichtung, insbesondere Spindelpresse und Verfahren zur umformenden Bearbeitung von Werkstücken
PCT/EP2016/071192 WO2017060029A1 (fr) 2015-10-06 2016-09-08 Dispositif de mise en forme, en particulier presse à vis, et procédé pour l'usinage de pièces par mise en forme

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EP3359316A1 EP3359316A1 (fr) 2018-08-15
EP3359316C0 EP3359316C0 (fr) 2023-08-02
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US (1) US10967418B2 (fr)
EP (1) EP3359316B1 (fr)
CN (1) CN108698114A (fr)
DE (1) DE102015116974A1 (fr)
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WO (1) WO2017060029A1 (fr)

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CN118321863A (zh) * 2018-01-12 2024-07-12 宁波会德丰铜业有限公司 自动安装系统及其方法
CN109532091A (zh) * 2018-12-27 2019-03-29 朱月兰 一种压力机床的上料装置及基于该上料装置的多道次压制方法
JP2022551561A (ja) * 2019-09-09 2022-12-12 コルシュ アーゲー 打錠機の構成部材を支持する装置、その使用、及び打錠機の構成部材の位置を調整する方法
CN117505756B (zh) * 2024-01-05 2024-03-08 邯郸正发科技有限公司 一种用于螺栓紧固件的成型装置

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RU2018116895A (ru) 2019-11-07
EP3359316A1 (fr) 2018-08-15
US20180290201A1 (en) 2018-10-11
CN108698114A (zh) 2018-10-23
EP3359316C0 (fr) 2023-08-02
WO2017060029A1 (fr) 2017-04-13
US10967418B2 (en) 2021-04-06
RU2723877C2 (ru) 2020-06-17
RU2018116895A3 (fr) 2019-11-07
DE102015116974A1 (de) 2017-04-06

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