WO2009121411A1 - Plateau rotatif pour poinçonneuses à encoches - Google Patents

Plateau rotatif pour poinçonneuses à encoches Download PDF

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Publication number
WO2009121411A1
WO2009121411A1 PCT/EP2008/054009 EP2008054009W WO2009121411A1 WO 2009121411 A1 WO2009121411 A1 WO 2009121411A1 EP 2008054009 W EP2008054009 W EP 2008054009W WO 2009121411 A1 WO2009121411 A1 WO 2009121411A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
control element
rotary drive
output gear
turntable
Prior art date
Application number
PCT/EP2008/054009
Other languages
German (de)
English (en)
Inventor
Martin Hagel
Original Assignee
Martin Hagel
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Martin Hagel filed Critical Martin Hagel
Priority to PCT/EP2008/054009 priority Critical patent/WO2009121411A1/fr
Publication of WO2009121411A1 publication Critical patent/WO2009121411A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/14—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by turning devices, e.g. turn-tables

Definitions

  • the invention relates to a turntable for Nutenstanzmaschinen according to the preamble of claim 1 and a method for controlling such a turntable according to the preamble of claim 12.
  • Notching machines are often used for the industrial production of rotor and stator laminations of generators or electric motors and for other applications in the metal processing industry.
  • the precision requirements of the elements cooperating with notching presses increase steadily.
  • a finished workpiece usually comprises a plurality of grooves which are individually punched one after the other.
  • a dividing head ensures in each case for a correct positioning and alignment of the workpieces to be machined in the Nutenstanzmaschine.
  • the dividing attachment comprises a turntable which must move the workpieces both precisely and quickly.
  • the turntable is driven by a three-phase motor with a countershaft.
  • the three-phase motor can be controlled very precisely, for example via a rotary encoder in its position.
  • Characterized in that the rotary table driven by a three-phase motor of a dividing apparatus is much more flexible than the provided with a mechanical drive turntable, the numerical drive for frequently changing workpieces is particularly well.
  • the high quality requirements lead to high costs for the dividing apparatus used and, moreover, such a countershaft requires a large amount of installation space.
  • Countershaft provided with certain manufacturing tolerances, which still lead to inaccuracies.
  • the object of the invention is therefore to a turntable for Nutenstanzmaschinen associated with the technical field construct, which is further improved over the prior art.
  • the turntable further comprises a control element which acts on the output gear.
  • the driven wheel which is used directly for positioning an object, in particular a workpiece, is thus not only definedly influenced by the first rotary drive. Immediately means in this context that no play-related elements between the output gear and the object are. A support for the object is thus for example screwed onto the output gear, welded or executed in one piece with the output gear.
  • the control element makes it possible to correct imprecise movements of the first rotary drive on the output gear.
  • the effect of the control element on the driven wheel can be dependent on the movement phase, in which the driven wheel is currently located.
  • the effect of the control element on the driven wheel may include, for example, an acceleration or a deceleration of the rotational movement of the driven gear or a correspondingly acting force.
  • the precision of the positioning of the driven wheel can not only be determined more accurately, but possibly also corrected.
  • the turntable according to the invention can in principle be equipped with rotary drives of various types. In particular, it may be both a mechanical and a numerical drive. A gear or countershaft does not have to be omitted for reasons of precision.
  • the turntable according to the invention is not limited to use in Nutenstanzmaschinen.
  • the invention can be in principle apply to other positioning devices that require a highly precise angular positioning. Examples include machines for the production of gear elements such as gears.
  • the effect of the control element on the driven wheel is preferably dependent on a momentary movement phase.
  • the effect comprises exerting a defined force or a defined torque.
  • the effect of the control element on the driven wheel is particularly preferably a defined force or a defined torque in order to be able to optimally engage in the movement of the driven gear in a situation-specific manner.
  • the effect of the control element on the output gear can also be independent of the current movement phase.
  • the control element can act in such a way that the drive wheel is adjusted to a defined position. In other words, if due to the described inaccuracies and / or a game results in an inaccuracy with regard to the situation, the described control element can bring the drive wheel in a defined desired position.
  • the force or torque is adjustable. This can ensure that the force or torque is particularly well adapted to the movement phase or the overall situation of the turntable. In this case, the ⁇ teuerung ⁇ element can act particularly efficient.
  • the motion phases include an acceleration phase and a deceleration phase.
  • the delay phase designates a period in which the Movement of the output gear delayed, the output gear is thus braked.
  • defined forces of the first rotary drive act on the driven wheel, to which the control element can react accordingly.
  • control element comprises a second rotary drive.
  • a second rotary drive as a control element has the advantage that it can accelerate the output both directly, as well as can brake directly.
  • the second rotary drive can be made significantly weaker than the first rotary drive, which primarily serves for the movement of the drive wheel-
  • the second rotary drive has in this case only a corrective function.
  • the control element may comprise a delay element.
  • the delay element can act only counter to the direction of movement of the driven gear. It thus represents a less flexible embodiment, but is also much easier.
  • the delay element can be provided both alone and in combination with the second rotary drive as a control element.
  • the delay element may be a brake that brakes the driven wheel so that it does not "run” because of its inertia when the transmission is braked by the first rotary drive.
  • the transmission for transmitting the movement of the first rotary drive is positively connected to the output gear.
  • a transmission is characterized by its slip-free by high efficiency and high precision.
  • the transmission is a gear transmission and the output gear is a first gear.
  • Gearboxes represent a safe and precise yet cost-effective gearbox. Commercially available gearboxes already meet very high precision requirements and can be purchased in a variety of versions.
  • the output gear as a gear can therefore be coupled particularly effectively to the transmission. It can be designed, for example, as a gear-shaped slide. In addition, it is also possible to use a toothed belt or chain drive or chain drive.
  • control element acts by means of a second gear on the output gear.
  • the embodiment of the output gear as the first gear facilitates engagement of the control element on the output gear. If both the gear transmission and the control element act in the same way on the gear-shaped output gear, tolerance-related inaccuracies in the position of the driven gear can be canceled against each other.
  • the control element can act by means of a rack on the drive wheel, which can be driven for example by a linear drive ,
  • teeth of the pinion gear are in the acceleration phase for transmitting the movement of the first rotary drive to the first gear each at a first edge of teeth of the first gear.
  • teeth of the second gear are always on each of a second edge of the teeth of the first gear, wherein the second edge of the first edge opposite.
  • a "preload” can be set between the toothed toothed gear and the second toothed wheel, for example, for the acceleration of the first toothed wheel, acting on the first toothed wheel such that it produces a torque in the positive direction of rotation about its
  • the second gear can exert a torque in the negative direction of rotation on the first gear, which has a smaller amount than the torque in the positive direction of rotation, thus resulting in a positive torque in the positive direction of rotation about the axis of the first gear, always one
  • a grooving machine preferably comprises a turntable according to the invention.
  • a control element additionally acts on the driven wheel.
  • the control element preferably acts on the driven wheel as a function of the instantaneous movement phase.
  • the control element exerts on the output gear a defined force or a defined torque.
  • the control element brakes the output gear relative to the transmission defined at least in a deceleration phase. Due to the defined braking in the deceleration phase of the driven gear, the relative angular position of the driven wheel opposite the transmission can be maintained over the entire braking process. A possibly existing "game" between the transmission and the output gear is therefore not relevant.
  • Gearboxes commonly used for transmitting the motion of the rotary drive to the drive wheel have tolerances of about 1 angular minute in the manufacture.
  • the positioning accuracy of the turntable is therefore no longer limited by the tolerances of the gears and gears used, but given by the accuracy of the rotary drive and the control element.
  • the first rotary drive can act as the main drive and be controlled by movement quantities (acceleration, speed, location).
  • the second rotary drive can be controlled for example via the torque which it exerts on the driven wheel.
  • Fig. 1 shows a side view of a preferred embodiment of the turntable according to the invention.
  • Fig. 2 shows a schematic diagram of the interaction between the gear transmission, the driven gear and the first and the second gear.
  • Fig. 1 shows an embodiment of the turntable according to the invention in a side view.
  • a first rotary drive 10 is shown, whose axis of rotation is substantially vertical.
  • the rotary drive 10 is, for example, a three-phase motor.
  • a gear 14 is mounted on the rotary drive 10, which transmits the movement of the rotary drive 10.
  • the exact design of the transmission 14 is not shown in Fig. 1 for reasons of clarity.
  • the movement of the rotary drive 10 is transmitted via the gear 14 to a driven gear 12, which in turn connects above the transmission 14.
  • the output gear 12 is integrally formed with or fixed to a turntable 16, which is provided for the positioning of a workpiece.
  • the rotary drive 10, the gear 14 and the output gear 12 are arranged substantially in alignment with each other.
  • the axis of rotation of the rotary drive 10 thus substantially corresponds to the axis of rotation of the driven wheel 12 and thus also of the turntable 16.
  • a second rotary drive 18 Radially displaced, shown in Fig. 1 right next to the rotary drive 10, there is a second rotary drive 18.
  • the second rotary drive 18 is compared to the first rotary drive 10 is made substantially smaller.
  • the axes of rotation of the first rotary drive 10 and the second rotary drive 18 run substantially parallel.
  • a gear 20 is also arranged above the second rotary drive 18, similar to the first rotary drive 10, a gear 20 is also arranged.
  • the gear wheel 20 is located substantially in the same horizontal plane as the driven gear 12 above the first rotary motor 10.
  • the gear 20 and the driven gear 12 are positively connected to each other in a first position, ie the driven gear 12 designed as a gearwheel and the gearwheel 20 mesh with one another.
  • the gear 20 can be mounted via a second dashed line position.
  • the two rotary drives 10, 18 and the gear 14 and gearwheels 12, 20 thereon are held in a frame construction.
  • Fig. 2 shows a schematic diagram of the interaction between the gear 14, the driven gear 12 and the gear 20.
  • the illustrated in Fig. 1 embodiment of the turntable is different in that the transmission 14 connects from below to the output gear 12, wherein the Movement of the transmission 14 is transmitted to the output gear 12 through a further toothed ring.
  • the gears involved are shown arranged side by side.
  • the last gearwheel 15 of the transmission 14 is represented in FIG. 2, which finally transfers the movement of the rotary drive 10 to the output gearwheel 12.
  • This gear 15 of the gear 14 has 8 radially outwardly projecting teeth 22, which interact successively with teeth 24 of the driven gear 12.
  • the output gear 12 is essentially the same as the gear 20 executed the same as the last gear 15 of the transmission 14.
  • the gear 15 performs a movement in the positive direction of rotation and its teeth 22 transmit torque to a first edge 30 of the teeth 24 of the driven gear 12, which consequently moves in a negative sense of rotation.
  • Opposite the first flank 30 of the teeth 24 of the driven gear 12 is a second edge 32 of the teeth 24.
  • the second flank 32 of the teeth 24 transmits upon rotation of the driven gear 12, a force on the teeth 28 of the gear 20.
  • the gear 20 is thereby the second rotary drive is acted upon by a torque that is exerted by the gear 20 always a force on the second flank 32 of the teeth 24 of the driven gear 12.
  • the force on the second flank 32 of the teeth 24 is located via the output gear 12 also on the first flank 30 of the teeth 24 at.
  • the contact surfaces between the teeth 22, 24, 28 are thus always under pressure, so that a possible clearance between the teeth 22, 24, 28 does not come into play.
  • the teeth 24 of the driven gearwheel 12 would be connected to the teeth 22 of the last gearwheel 15 during a deceleration of the gearbox 14 with the second flank 32 of the transmission 14, if the gear 20 would exert no force on the teeth 24 of the driven gear 12.
  • the output gear 12 would exploit a more or less large clearance between the output gear 12 and the gear 15 of the transmission 14 and "lag" because of its inertia, which would lead to an unwanted inaccuracy in the position of the driven gear 12.
  • the output gear 12 is thus defined by the gear 20 braked.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)

Abstract

L'invention concerne un plateau rotatif pour poinçonneuses à encoches, comprenant un premier dispositif d'entraînement en rotation (10), une roue de sortie (12) et un mécanisme de transmission (14) servant à transmettre un mouvement du premier dispositif d'entraînement en rotation (10) à la roue de sortie (12) qui sert directement à positionner un objet, notamment une pièce. Le plateau rotatif selon l'invention présente en outre un élément de commande (18) qui agit sur la roue de sortie (12). L'invention concerne en outre un procédé pour commander un tel plateau rotatif ainsi qu'une poinçonneuse à encoches équipée d'un plateau rotatif selon l'invention.
PCT/EP2008/054009 2008-04-03 2008-04-03 Plateau rotatif pour poinçonneuses à encoches WO2009121411A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/054009 WO2009121411A1 (fr) 2008-04-03 2008-04-03 Plateau rotatif pour poinçonneuses à encoches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/054009 WO2009121411A1 (fr) 2008-04-03 2008-04-03 Plateau rotatif pour poinçonneuses à encoches

Publications (1)

Publication Number Publication Date
WO2009121411A1 true WO2009121411A1 (fr) 2009-10-08

Family

ID=39717517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/054009 WO2009121411A1 (fr) 2008-04-03 2008-04-03 Plateau rotatif pour poinçonneuses à encoches

Country Status (1)

Country Link
WO (1) WO2009121411A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102896203A (zh) * 2012-10-16 2013-01-30 芜湖电工机械有限公司 用于数控冲槽机上的伺服电机用同步带驱动曲轴的结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241656A (en) * 1964-04-09 1966-03-22 Bound Brook Bearing Corp Of Am Dial feed for presses
DE1552038A1 (de) * 1966-10-17 1969-12-18 Weingarten Ag Maschf Transporteinrichtung an automatischen Nutenstanzmaschinen
FR2546095A1 (fr) * 1982-12-23 1984-11-23 Thimonnier Sa Plateau tournant destine a alimenter une machine
EP0978335A1 (fr) * 1998-08-06 2000-02-09 SALVAGNINI ITALIA S.p.A. Dispositif de mise en rotation pour une machine de travailler des tôles
DE102005032902A1 (de) * 2005-07-12 2007-01-18 Müller Weingarten AG Teilapparat für Nutenstanzautomaten mit Direktantrieb

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241656A (en) * 1964-04-09 1966-03-22 Bound Brook Bearing Corp Of Am Dial feed for presses
DE1552038A1 (de) * 1966-10-17 1969-12-18 Weingarten Ag Maschf Transporteinrichtung an automatischen Nutenstanzmaschinen
FR2546095A1 (fr) * 1982-12-23 1984-11-23 Thimonnier Sa Plateau tournant destine a alimenter une machine
EP0978335A1 (fr) * 1998-08-06 2000-02-09 SALVAGNINI ITALIA S.p.A. Dispositif de mise en rotation pour une machine de travailler des tôles
DE102005032902A1 (de) * 2005-07-12 2007-01-18 Müller Weingarten AG Teilapparat für Nutenstanzautomaten mit Direktantrieb

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102896203A (zh) * 2012-10-16 2013-01-30 芜湖电工机械有限公司 用于数控冲槽机上的伺服电机用同步带驱动曲轴的结构

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