EP0395963B1 - Device for controlling the feeder of a step wise advancing feed-apparatus - Google Patents

Device for controlling the feeder of a step wise advancing feed-apparatus Download PDF

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Publication number
EP0395963B1
EP0395963B1 EP90107582A EP90107582A EP0395963B1 EP 0395963 B1 EP0395963 B1 EP 0395963B1 EP 90107582 A EP90107582 A EP 90107582A EP 90107582 A EP90107582 A EP 90107582A EP 0395963 B1 EP0395963 B1 EP 0395963B1
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EP
European Patent Office
Prior art keywords
control
web
feed
mesh
intended
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP90107582A
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German (de)
French (fr)
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EP0395963A1 (en
Inventor
Helmut Messner
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Bruderer AG
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Bruderer AG
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    • 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
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material

Definitions

  • the present invention relates to a device for controlling the feed of a feed apparatus intended for the gradual advancement of a band-shaped workpiece.
  • US Pat. No. 3,758,011 and US Pat. No. 3,784,075 each disclose a device for incrementally advancing a workpiece, in which there is a fixed relationship between the speed of the drive shaft and the phase of the oscillation. This ratio cannot be changed in the known devices, once it has been set, or only with great effort.
  • the invention seeks to remedy this.
  • the invention as characterized in the claim, achieves the object of providing a device for controlling the feed of a step-by-step feed apparatus, in which a number of control disks are arranged on a sliding sleeve, which is axially displaceable relative to the sleeve section, and a further control disk is present, which is fixedly connected to the sleeve portion.
  • Figure 1 shows an embodiment of a feed device in section.
  • FIG. 1 now shows a further embodiment of the device for switching or controlling the feed, which is generally the same as the embodiment according to FIG. 6 of the said application. Accordingly, the same reference numbers are used in the description of this embodiment and only the decisive structural differences are dealt with.
  • a sliding bushing 84 is again arranged in a rotationally fixed and axially displaceable manner.
  • This carries a number of control disks 101, 102 which correspond to the function according to the cam member 12 of FIG. 1 of the application description mentioned.
  • Another control disk 100 is fixedly connected to the bushing section 83 or is formed in one piece with the same.
  • These control discs 100, 101 and 102 control the movement of the rollers 110 and 111, which are connected via the arm 9 to the linkage for moving the rocker 4. It can be seen here that the roller 110 interacts exclusively with the control disk 100, whereas the roller 111 interacts with either the control disk 101 or the control disk 102 depending on the axial displacement position.
  • the spool 92 has a driver 93 which projects into a space between the control disks 101 and 102.
  • the sliding sleeve 84 can thus be moved back and forth on the sleeve section 83 by means of the control slide 92, and the one of the control disks 101, 102 on which the roller 111 has to rest is selected.
  • the sliding sleeve 84 also has tooth-shaped coupling elements 103 which can be brought into engagement with the tooth-shaped coupling elements 104 which are arranged on the drive shaft 11.
  • the drive shaft also has a recess 96 in the section forming the eccentric member, into which a locking member 97 which can be moved longitudinally in the housing 1 can be inserted.
  • the rocker is timed by two control disks, namely the control disks 100 and 101 or the control disks 100 and 102 by the roller 110 and 111 respectively resting thereon and correspondingly interacting components, the up and down movement of the feed roller 3.
  • the control disk 100 together with the roller 110 controls the phase of the intermediate ventilation of the holding ruler 46, during which a workpiece to be machined is not held and centered by a holding ruler but only by holding members on a tool that is machining the same.
  • the two control disks 101 and 102 which cooperate with the roller 111, determine the adjustable feed or the feed phase of the feed apparatus.
  • the epicyclic gearbox now behaves as in the corresponding position of the control slide 92, which is described with reference to FIG. 6 of the application description mentioned, with a 1: 1 transmission now taking place, that is to say that the upper feed roller 3 during 180 ° of the rotary movement of the drive shaft on the to be fed sheet metal band 43 rests. So there is again the direct drive transmission.
  • the phase position of the intermediate ventilation predetermined by the control disc 100 can be changed relative to the phase position of the feed phase determined by the control discs 101, 102.
  • the sliding sleeve 84 is shifted completely to the right, so that its coupling member or coupling members 103 mesh with the coupling members 104 of the drive shaft 11.
  • the locking member 97 By inserting the locking member 97 into the recess 96 of the drive shaft 11, the same is locked.
  • the bushing section 83 can now be rotated on the drive shaft 11.
  • the feed phase can be changed in an extremely simple manner relative to the phase of the intermediate ventilation of the feed device, so that the feed device can be used in a wide range for the most varied processing of a sheet metal strip, e.g. can be adjusted extremely easily and quickly in a punch press.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Transmission Devices (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Retarders (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Steuern des Vorschubs eines zum schrittweisen Vorschieben eines bandförmigen Werkstückes bestimmten Vorschubapparates.The present invention relates to a device for controlling the feed of a feed apparatus intended for the gradual advancement of a band-shaped workpiece.

In der US-PS 3 758 011 und der US-PS 3 784 075 ist jeweils eine Vorrichtung zum schrittweisen Vorschieben eines Werkstückes offenbart, bei welcher ein festgelegtes Verhältnis zwischen der Drehzahl der Antriebswelle und der Phase der Oszillation vorhanden ist. Dieses Verhältnis lässt sich bei den bekannten Vorrichtungen, nachdem es einmal eingestellt worden ist, nicht oder nur mit grossen Aufwendungen verändern.US Pat. No. 3,758,011 and US Pat. No. 3,784,075 each disclose a device for incrementally advancing a workpiece, in which there is a fixed relationship between the speed of the drive shaft and the phase of the oscillation. This ratio cannot be changed in the known devices, once it has been set, or only with great effort.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie im Anspruch gekennzeichnet ist, löst die Aufgabe, eine Vorrichtung zum Steuern des Vorschubs eines schrittweise vorschiebenden Vorschubapparates zu schaffen, bei der eine Anzahl Steuerscheiben auf einer Schiebebüchse angeordnet sind, welche relativ zum Büchsenabschnitt axial verschiebbar ist, und eine weitere Steuerscheibe vorhanden ist, die mit dem Büchsenabschnitt fest verbunden ist.The invention seeks to remedy this. The invention, as characterized in the claim, achieves the object of providing a device for controlling the feed of a step-by-step feed apparatus, in which a number of control disks are arranged on a sliding sleeve, which is axially displaceable relative to the sleeve section, and a further control disk is present, which is fixedly connected to the sleeve portion.

Der durch die Erfindung erreichte Vorteil ist im wesentlichen darin zu sehen, dass die Vorschubphase relativ zur Phase der Zwischenlüftung des Vorschubapparates in äusserst einfacher Weise geändert werden kann.The advantage achieved by the invention can essentially be seen in the fact that the feed phase can be changed in an extremely simple manner relative to the phase of the intermediate ventilation of the feed apparatus can.

Im folgenden wird die Erfindung anhand von einer lediglich einen Führungsweg darstellenden Zeichnung näher erläutert.The invention is explained in more detail below with reference to a drawing which represents only a guide path.

Es zeigt:
   Figur 1 eine Ausführungsform einer Vorschubvorrichtung im Schnitt.It shows:
Figure 1 shows an embodiment of a feed device in section.

Der grundsätzliche Aufbau und die Funktion dieser Vorrichtung ist in der Anmeldung EP-A-0 366 107, die zum Stand der Technik gemäß Artikel 54(3) EPÜ zähzt, ausführlich beschrieben und somit wird nicht näher auf dieselbe eingegangen. Insbesondere wird auf die Figur 6 und die dazugehörige Beschreibung der genannten Anmeldungsschrift hingewiesen.The basic structure and the function of this device is described in detail in the application EP-A-0 366 107, which is part of the prior art according to Article 54 (3) EPC, and therefore it is not dealt with in more detail. In particular, reference is made to FIG. 6 and the associated description of the said application.

Die Figur 1 zeigt nun eine weitere Ausführung der Vorrichtung zum Umschalten bzw. Steuern des Vorschubs, welche im allgemeinen gleich der Ausführung nach der Figur 6 der genannten Anmeldungsschrift ist. Entsprechend werden bei der Beschreibung dieser Ausführung dieselben Bezugsziffern verwendet und nur auf die entscheidenden aufbaumässigen Unterschiede eingegangen.FIG. 1 now shows a further embodiment of the device for switching or controlling the feed, which is generally the same as the embodiment according to FIG. 6 of the said application. Accordingly, the same reference numbers are used in the description of this embodiment and only the decisive structural differences are dealt with.

Auf dem Büchsenabschnitt 83 ist wieder eine Schiebebüchse 84 drehfest und axial verschiebbar angeordnet. Diese trägt eine Anzahl Steuerscheiben 101, 102, welche der Funktion nach dem Nockenglied 12 der Figur 1 der genannten Anmeldungsbeschreibung entsprechen. Eine weitere Steuerscheibe 100 ist fest mit dem Büchsenabschnitt 83 verbunden, bzw. einstückig mit derselben ausgebildet. Diese Steuerscheiben 100, 101 und 102 steuern die Bewegung der Rollen 110 und 111, die über den Arm 9 mit dem Gestängeglied zum Bewegen der Wippe 4 verbunden sind. Es ist dabei ersichtlich, dass die Rolle 110 ausschliesslich mit der Steuerscheibe 100 zusammenwirkt, hingegen die Rolle 111 je nach axialer Verschiebestellung mit entweder der Steuerscheibe 101 oder der Steuerscheibe 102 zusammenwirkt. Der Steuerschieber 92 weist einen Mitnehmer 93 auf, der in einen Zwischenraum zwischen den Steuerscheiben 101 und 102 hineinragt. Damit lässt sich die Schiebebüchse 84 mittels dem Steuerschieber 92 auf dem Büchsenabschnitt 83 hin und her verschieben, und diejenige der Steuerscheiben 101, 102 auszuwählen, auf welcher die Rolle 111 aufzuliegen hat.On the bushing section 83, a sliding bushing 84 is again arranged in a rotationally fixed and axially displaceable manner. This carries a number of control disks 101, 102 which correspond to the function according to the cam member 12 of FIG. 1 of the application description mentioned. Another control disk 100 is fixedly connected to the bushing section 83 or is formed in one piece with the same. These control discs 100, 101 and 102 control the movement of the rollers 110 and 111, which are connected via the arm 9 to the linkage for moving the rocker 4. It can be seen here that the roller 110 interacts exclusively with the control disk 100, whereas the roller 111 interacts with either the control disk 101 or the control disk 102 depending on the axial displacement position. The spool 92 has a driver 93 which projects into a space between the control disks 101 and 102. The sliding sleeve 84 can thus be moved back and forth on the sleeve section 83 by means of the control slide 92, and the one of the control disks 101, 102 on which the roller 111 has to rest is selected.

Die Schiebebüchse 84 weist weiter zahnförmige Kuppelglieder 103 auf, welche zum Eingriff mit den zahnförmigen Kuppelgliedern 104 gebracht werden können, welche auf der Antriebswelle 11 angeordnet sind. Die Antriebswelle weist weiter beim das Exzenterglied bildenden Abschnitt eine Ausnehmung 96 auf, in welches ein im Gehäuse 1 längs verschiebbares Arretierglied 97 eingesetzt werden kann.The sliding sleeve 84 also has tooth-shaped coupling elements 103 which can be brought into engagement with the tooth-shaped coupling elements 104 which are arranged on the drive shaft 11. The drive shaft also has a recess 96 in the section forming the eccentric member, into which a locking member 97 which can be moved longitudinally in the housing 1 can be inserted.

Nachfolgend wird nun der Betrieb dieser Ausführung der Steuervorrichtung beschrieben. Dabei wird von der in der Figur 1 gezeichneten Stellung der verschiedenen Steuerteile ausgegangen. Die Ausbildung des Umlaufgetriebes ist identisch derjenigen, die in der Figur 6 der vorgenannten Anmeldungsbeschreibung erläutert worden ist, so dass nicht nochmals auf dieselbe eingegangen werden muss.The operation of this embodiment of the control device will now be described. The position of the various control parts shown in FIG. 1 is assumed. The design of the epicyclic gearbox is identical to that which was explained in FIG. 6 of the aforementioned application description, so that it does not have to be discussed again.

Im Unterschied dazu wird die Wippe durch jeweils zwei Steuerscheiben, nämlich die Steuerscheiben 100 und 101 oder die Steuerscheiben 100 und 102 durch die jeweils darauf aufliegende Rolle 110 bzw. 111 und entsprechend diesen zusammenwirkenden Bauteile die Auf- und Abwärtsbewegung der Vorschubwalze 3 zeitlich gesteuert. Dabei steuert die Steuerscheibe 100 zusammen mit der Rolle 110 die Phase der Zwischenlüftung des Haltelineals 46, während welcher ein zu bearbeitendes Werkstück nicht durch das Haltelineal sondern nur durch Halteglieder an einem dasselbe bearbeitenden Werkzeug gehalten und zentriert wird. Die zwei Steuerscheiben 101 und 102, welche mit der Rolle 111 zusammenwirken, bestimmen den verstellbaren Vorschub, bzw. die Vorschubphase des Vorschubapparates.In contrast to this, the rocker is timed by two control disks, namely the control disks 100 and 101 or the control disks 100 and 102 by the roller 110 and 111 respectively resting thereon and correspondingly interacting components, the up and down movement of the feed roller 3. The control disk 100 together with the roller 110 controls the phase of the intermediate ventilation of the holding ruler 46, during which a workpiece to be machined is not held and centered by a holding ruler but only by holding members on a tool that is machining the same. The two control disks 101 and 102, which cooperate with the roller 111, determine the adjustable feed or the feed phase of the feed apparatus.

Wenn der Steuerschieber 92 in der Figur vollständig nach links verschoben ist, steht sein vorderes Ende im arretierenden Eingriff mit der Arretierscheibe 90 des arretierbaren Sonnenrades 81 und die Rolle 111 läuft auf der Steuerscheibe 102. Wie schon bemerkt worden ist, läuft die Rolle 110 dauernd auf der Steuerscheibe 100. Diese Stellung ist in der Figur gezeichnet. Aufgrund des arretierten Sonnenrades 81 liegt nun ein vorgegebenes Uebersetzungsverhältnis 1:2 zwischen dem Steg 78 und der Antriebswelle 11 vor und andererseits kann nun die Steuerscheibe 101 in einer solchen Drehstellung relativ zum Büchsenabschnitt 83 sein, das ein Aufliegen der Vorschubwalzen nur während 90° und beispielsweise in bezug auf die Phase symmetrisch bei einer beispielsweisen Stanzbewegung einer Stanzpresse auf dem vorzuschiebenden Band 43 aufliegen. Wenn der Steuerschieber 92 in der Figur um eine Stufe nach rechts verschoben wird, liegt die Rolle 111 auf der Steuerscheibe 101 auf. Die Rolle 110 liegt nach wie vor auf der Steuerscheibe 100 auf. Jetzt gibt jedoch der Steuerschieber 92 die Arretierscheibe 90 und somit das arretierbare Sonnenrad 81 frei. Jedoch stehen nun die Koppelglieder 103, z.B. Verzahnung der Schiebebüchse 84 mit den Koppelgliedern 104, z.B. Verzahnung der Abtriebswelle 11 im gekoppelten Zustand.When the control slide 92 is completely shifted to the left in the figure, its front end is in locking engagement with the locking disc 90 of the lockable sun gear 81 and the roller 111 runs on the control disc 102. As has already been mentioned, the roller 110 runs continuously the control disk 100. This position is shown in the figure. Due to the locked sun gear 81, there is now a predetermined transmission ratio 1: 2 between the web 78 and the drive shaft 11 and, on the other hand, the control disk 101 can now be in such a rotational position relative to the bushing section 83, which means that the feed rollers only lie on during 90 ° and for example lie symmetrically with respect to the phase during an example punching movement of a punch press on the belt 43 to be advanced. When the control slide 92 is shifted one step to the right in the figure, the roller 111 rests on the control disk 101. The roller 110 is still on the control disc 100. Now, however, the control slide 92 releases the locking disk 90 and thus the lockable sun gear 81. However, the coupling links 103, e.g. Toothing of the sliding bush 84 with the coupling members 104, e.g. Toothing of the output shaft 11 in the coupled state.

Das Umlaufgetriebe verhält sich nun so wie bei der entsprechenden Stellung des Steuerschiebers 92, die anhand der Figur 6 der genannten Anmeldungsbeschreibung beschrieben ist, wobei nun eine 1:1 Uebertragung stattfindet, d.h. dass die obere Vorschubwalze 3 während 180° der Drehbewegung der Antriebswelle auf dem vorzuschiebenden Blechband 43 aufliegt. Es herrscht also wiederum die direkte Antriebsübertragung vor.The epicyclic gearbox now behaves as in the corresponding position of the control slide 92, which is described with reference to FIG. 6 of the application description mentioned, with a 1: 1 transmission now taking place, that is to say that the upper feed roller 3 during 180 ° of the rotary movement of the drive shaft on the to be fed sheet metal band 43 rests. So there is again the direct drive transmission.

Nun kann die durch die Steuerscheibe 100 vorgegebene Phasenlage der Zwischenlüftung relativ zur durch die Steuerscheiben 101, 102 bestimmten Phasenlage der Vorschubphase geändert werden. Dazu wird die Schiebebüchse 84 vollständig nach rechts verschoben, so dass ihr Koppelglied bzw. ihre Koppelglieder 103 mit den Koppelgliedern 104 der Antriebswelle 11 kämmen. Indem das Arretierglied 97 in die Ausnehmung 96 der Antriebswelle 11 eingesetzt wird, ist dieselbe arretiert. Der Büchsenabschnitt 83 kann nun auf der Antriebswelle 11 gedreht werden. (Dieses kann über eine gesteuerte Rotationsbewegung der Treibwelle 76 erfolgen.) Wird der Büchsenabschnitt 83 auf der Antriebswelle 11 rotiert, folgt offensichtlich die Steuerscheibe 100 dieser Drehbewegung, womit dieselbe relativ zu den Steuerscheiben 101 und 102 gedreht wird, so dass eine Verschiebung der Phasen der Zwischenlüftung und des Vorschubes erreicht ist. Nachdem diese Verschiebung der Phasen durch die Rotation letztlich der Steuerscheibe 100 durchgeführt worden ist, wird die Schiebebüchse 84 wieder nach links verschoben, wobei ihre Verzahnung 103 in einer im Vergleich zur ursprünglichen verschiedenen Drehstellung mit derjenigen der Antriebswelle 11 einkoppelt. Darauf wird durch ein Zurückziehen des Arretiergliedes 97 aus der Ausnehmung 96 die Antriebswelle 11 wieder freigegeben. Mit dieser Ausführung kann also die Vorschubphase relativ zur Phase der Zwischenlüftung des Vorschubapparates in äusserst einfacher Weise geändert werden, so dass der Vorschubapparat in einem breiten Bereich für die unterschiedlichsten Bearbeitungen eines Blechbandes z.B. in einer Stanzpresse äusserst einfach und schnell angepasst werden kann.Now the phase position of the intermediate ventilation predetermined by the control disc 100 can be changed relative to the phase position of the feed phase determined by the control discs 101, 102. For this purpose, the sliding sleeve 84 is shifted completely to the right, so that its coupling member or coupling members 103 mesh with the coupling members 104 of the drive shaft 11. By inserting the locking member 97 into the recess 96 of the drive shaft 11, the same is locked. The bushing section 83 can now be rotated on the drive shaft 11. (This can be done via a controlled rotational movement of the drive shaft 76.) If the sleeve section 83 is rotated on the drive shaft 11, the control disk 100 obviously follows this rotary movement, with which the latter is rotated relative to the control disks 101 and 102, so that a shift in the phases of the Intermediate ventilation and the feed is reached. After this phase shift has ultimately been carried out by the rotation of the control disk 100, the sliding bush 84 is shifted again to the left, its toothing 103 being coupled in with the drive shaft 11 in a different rotational position compared to the original. The drive shaft 11 is then released again by withdrawing the locking member 97 from the recess 96. With this embodiment, the feed phase can be changed in an extremely simple manner relative to the phase of the intermediate ventilation of the feed device, so that the feed device can be used in a wide range for the most varied processing of a sheet metal strip, e.g. can be adjusted extremely easily and quickly in a punch press.

Claims (1)

  1. Apparatus for controlling the feed of a feeding apparatus for a stepwise feeding of a web-shaped workpiece, having a planetary gear with a web (78) which supports a toothed rim (79) which mesh with a driving gear wheel (77) and planet pinions (80), which mesh on the one hand with an arrestable sun wheel (81) and mesh on the other hand with an output sun wheel (82) seated on a shaft (11) which is rotatably supported in an axial sleeve section (83) of the web (78) and is coupled to an eccentric member of a transmitting device which is intended to transform the rotational movement of the shaft (11) of the output sun wheel (82) into an oscillating movement for the driving of the feeding apparatus, characterized by a number of control disks (101, 102) which are formed on a sliding sleeve which is arranged on the axial sleeve section (83) of the web (78) to rotate therewith and to be axially displaceable thereupon, and by a further control disk (100) which is rigidly mounted to the axial sleeve section (83), all of which control disks (100, 101, 102) being intended to control the movement of a link member (9) resting via a respective roller (110, 111) on a respective control disk and being part of a pressing device which is intended to intermittently exert a pressing force onto a workpiece to be fed.
EP90107582A 1989-05-03 1990-04-20 Device for controlling the feeder of a step wise advancing feed-apparatus Expired - Lifetime EP0395963B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1692/89A CH679020A5 (en) 1989-05-03 1989-05-03
CH1692/89 1989-05-03

Publications (2)

Publication Number Publication Date
EP0395963A1 EP0395963A1 (en) 1990-11-07
EP0395963B1 true EP0395963B1 (en) 1993-01-07

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EP90107582A Expired - Lifetime EP0395963B1 (en) 1989-05-03 1990-04-20 Device for controlling the feeder of a step wise advancing feed-apparatus

Country Status (5)

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US (1) US5062561A (en)
EP (1) EP0395963B1 (en)
JP (1) JP2815672B2 (en)
CH (1) CH679020A5 (en)
DE (1) DE59000714D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04313556A (en) * 1990-11-30 1992-11-05 Sankyo Seisakusho:Kk Roll field
DE50203282D1 (en) * 2002-07-08 2005-07-07 Bruderer Ag Frasnacht Feed device for intermittently feeding a strip-shaped blank to a press and method for operating the same
EP1391254B1 (en) * 2002-08-22 2007-12-19 Bruderer Ag An arrangement for the intermittent forward feeding of a web material to a press and method for operating the same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682386A (en) * 1928-08-28 Differential mechanism
US1243720A (en) * 1917-05-12 1917-10-23 Freddie E Eidson Differential gearing.
US1388303A (en) * 1919-08-07 1921-08-23 Oswald S Pulliam Variable-speed power-transmission
US2152932A (en) * 1936-05-06 1939-04-04 Borg Warner Differential change speed transmission
US2253535A (en) * 1938-09-26 1941-08-26 Morse Bros Machinery Company Differential driving mechanism
US2753183A (en) * 1953-01-29 1956-07-03 Littell Machine Co F J Mechanical speed variator for continuous strip feeding
CH544243A (en) * 1971-10-01 1973-11-15 Bruderer Ag Device for driving shafts in an oscillating manner and using the device
CH543932A (en) * 1971-10-01 1973-11-15 Bruderer Ag Device for gradually advancing a workpiece
JPS5655055Y2 (en) * 1976-05-13 1981-12-22
DD128626B1 (en) * 1976-10-20 1978-11-29 Klaus Kummer DRIVE SYSTEM FOR SIDE MOVEMENTS AT PRESSES
IT1157972B (en) * 1982-12-21 1987-02-18 Fiat Trattori Spa LOCKING DEVICE FOR A DIFFERENTIAL OF A VEHICLE WITH MANUAL ARMING AND AUTOMATIC DISARMING
JPS60154918A (en) * 1984-01-26 1985-08-14 Tochigi Fuji Ind Co Ltd Power distribution device

Also Published As

Publication number Publication date
US5062561A (en) 1991-11-05
DE59000714D1 (en) 1993-02-18
JPH02300548A (en) 1990-12-12
EP0395963A1 (en) 1990-11-07
CH679020A5 (en) 1991-12-13
JP2815672B2 (en) 1998-10-27

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