SE185173C1

SE185173C1 -

Info

Publication number: SE185173C1
Authority: SE
Publication date: 1963-01-01

Description

Uppfinnare: G Junginger Prioritet begdrd fran den 30 juni 1959 (FOrbundsrepubliken Tyskiand) Uppfinningen hanfor sig till en friktionskoppling for pressar, stansar, saxar och liknande med en pa en ganga forskjutbar kopplingsmutter, vilkens forskjutning innebar friktionsslutningens inledande eller avslutande. Inventor: G Junginger Priority requested from 30 June 1959 (Federal Republic of Germany) The invention relates to a friction coupling for presses, punches, scissors and the like with a one-time displaceable coupling nut, the displacement of which means the initiation or termination of the friction closure.

Vid kopplingar av delta slag blir kopplingsmuttern genom friktion mot del roterande svanghjulet fastdragen. Ddrigenom uppstar den for friktionsslutningen nodvandiga anliggningskraften och storleken ph anliggningskraften stiger proportionellt med vridmomentet i arbetsaxeln. Vid en excenterpress är den alltsa beroende av presskraften och den verksamma havarmen pa excenteraxeln. Nagon begransning av anliggningskraften och darmed av kopplingsmomentet ãr inte given vid dentin utforingsf arm. In the case of couplings of the delta type, the coupling nut is tightened by friction against the rotating flywheel. This results in the abutment force required for the friction closure and the magnitude of the abutment force increases in proportion to the torque in the working shaft. In the case of an eccentric press, it is thus dependent on the pressing force and the effective sea heat on the eccentric shaft. No limitation of the abutment force and thus of the coupling torque is not given at the dentin lining form.

Del uppstar harigenom ingen sakerhet for verktyget och maskinen i handelse av overbelastning. Anliggningskraften fran kopplingsmuttern verkar med full styrka pa den vid friktionsslutningen inledande friktionsytan. For alt losgora kopplingsmuttern make liarigenom ett betydande friktionsmoment Overvinnas och detta friktionsmoment blir storre ju storre anliggningskraften ar. Vid tunga arbeten blir harigenom losgorandet av kopplingsmuttern mOjligt endast med relativt stora krafter. Harav uppstax olikartad losgaring av friktionsslutningen. Som exempel vid excenterpressen uppstar spridning av hallpunkten och pressens gang blir hard och ljudlig. This results in no safety for the tool and the machine in the event of an overload. The abutment force from the coupling nut acts with full force on the friction surface which begins at the friction closure. To loosen the coupling nut makes a significant friction moment overcome and this friction moment becomes greater the greater the abutment force. During heavy work, the loosening of the coupling nut becomes possible only with relatively large forces. This results in different loosening of the friction closure. As an example of the eccentric press, the spread of the hall point occurs and the gait of the press becomes loud and noisy.

Ytterligare en nackdel uppstar med denna koppling nar exempelvis en excenterpress arbetar mot en aterforingsanordning, och stotstangen blir frankopplad i omradet for arbetsslaget. Under inverkan av aterforingsanordningen blir stotstangen aterford och darigenom kopplingsmuttern lOsgjord fran friktionsslutningen. Senare har aterforingsanord ningens funktion eftersla.pat, och kopplingsmuttern blir genom friktionen mot roterande drivhjulet ater fangad och aldragen. Losgorandet och atertilldragandet av kopplingsmuttern upprepas mycket snabbt och skakar maskinen innan den stannar. A further disadvantage arises with this coupling when, for example, an eccentric press works against a feeding device, and the push rod is disengaged in the area of the working stroke. Under the influence of the return device, the push rod becomes atherford and thereby the coupling nut is loosened from the friction closure. Later, the function of the return device has deteriorated, and the coupling nut is caught and pulled again by the friction against the rotating drive wheel. The loosening and re-tightening of the coupling nut is repeated very quickly and shakes the machine before it stops.

Foreliggande uppfinning undgar alla dessa nackdelar. Uppfinningens kannetecken be-star ddri, att kopplingsmuttern verkar Over ett axiallager ph kopplingsfriktionsytan och den fOr fastdragande av kopplingsmuttern verkande friktionsytan är fjadrande understodd. I en utforingsform for uppfinningen trycker kopplingsmuttern Over elf axialsparkullager kopplingsfriktiansytan mot drivhjulet och den som fasthallning verkande friktionsytan for kopplingsmuttern Or fjhdrande understatt mot drivhjulet. I en annan utforingsform trycker kopplingsmuttern Over ett axialsparkullager och en med drivhjulet medlopande tryckskiva pa kopplingsfriktionsytan och fasthallningen av kopplingsmuttern foljer genom en mot denna tryckskiva fj ddrande friktionsyta. The present invention avoids all of these disadvantages. The characteristic feature of the invention is that the coupling nut acts over an axial bearing on the coupling friction surface and that the friction surface acting for tightening the coupling nut is resiliently supported. In an embodiment of the invention, the clutch nut Over eleven axial thrust bearing presses the clutch friction surface against the drive wheel and the friction surface of the clutch nut Or resiliently supported against the drive wheel. In another embodiment, the coupling nut presses over an axial thrust ball bearing and a pressure plate accompanying the drive wheel on the coupling friction surface and the holding of the coupling nut follows through a friction surface resilient against this pressure plate.

Kopplingsmuttern later sig nu mycket hitt losgaras genom axiallagret. Den behover egentligen endast bli lossad fran friktionsmotstandet has den fjadrande understodda friktionsytan. Anliggningskraften mellan kopplingsmuttern och den fjadrande understodda friktionsytan Or emellertid ,endast en brakdel av den ,som uppstar mellan kopplingsmutter och kopplingsfriktionsyta. Genom den latta losgoringen av kopplingsmuttern bortfaller de tidigare upptradande olagenheterna vid losgoringen av friktionskopplingar. Exempelvis vid excenterpressar upptrader nara nog ingen spridning pa stoppstallena och gangen pa pressen blir lugn och tillfOrlitlig. Mekanismerna for lasgOring av kopplingsmuttern blir skonude och kunna byggas lattare. Det Or nu 2— — ocksa utan vidare majligt att genom bromsverkan anordna en regleranordning for styrning av kopplingsmuttern. I handelse av fast-Miming med excenterpressen kan kopplingsmuttern utan anstrangning losgoras. Fastdragningen av kopplingsmuttern genom inverkan av det roterande svanghjulet kan bli begransad till pressens nominella moment, till exempel genom att for detta ha overensstammande fjadrar till den for fastdragningen verkande friktionsplattan. Darmed är verktyg och maskinen skyddade fran foljderna ay en overbelastning av vridmomenten. The coupling nut is now very loosely loosened through the thrust bearing. It really only needs to be detached from the frictional resistor having the resiliently supported friction surface. However, the abutment force between the coupling nut and the resilient supported friction surface Or, only a fraction of that which arises between the coupling nut and the coupling friction surface. Due to the easy loosening of the coupling nut, the previously occurring malfunctions in the loosening of friction couplings disappear. For example, with eccentric presses, there is almost no spread at the stop stalls and the passage of the press becomes calm and reliable. The mechanisms for welding the coupling nut become shoe-free and can be built more easily. It is now also possible to arrange a control device for controlling the coupling nut by means of braking action. In the case of fixed-Miming with the eccentric press, the coupling nut can be loosened without effort. The tightening of the coupling nut by the action of the rotating flywheel can be limited to the nominal torque of the press, for example by having corresponding springs for the friction plate acting for the tightening. Thus, tools and the machine are protected from the folds by an overload of the torques.

Den fjadrande understodda friktionsplattan for fastdragning av kopplingsmuttern forhindrar en oavsiktlig losgaring nar exempelvis en excenterpress arbetar mot en aterforingsanordning och stotstangen frankopplas Aterforingsanordningen i omradet for arbetsslaget. The resiliently supported friction plate for tightening the coupling nut prevents an unintentional loosening when, for example, an eccentric press works against a return device and the push rod is disengaged from the return device in the area of the working stroke.

De i borjan onmamnda skakningarna i maskinen uppkommer joke mera. The initially unmistakable shakes in the machine make more jokes.

Uppfinningen beskrives narmare i det foljande i ansluttring till bifogade ritning som a.terger tva utfkingsformer av densamma. The invention is described in more detail below in connection with the accompanying drawing, which shows two embodiments thereof.

Fig. 1 visar en MT en excenterpress avsedd koppling, vid vilken kopplingsmuttern Over ett axellager p drivhjulet trycker mot kopplingsfriktionsytan. Fig. 1 shows an MT coupling intended for an eccentric press, in which the coupling nut presses against the shaft friction surface over a shaft bearing on the drive wheel.

Fig. 2 visar en koppling vid vilken kopplingsmuttern Over ett axiallager och en tryckskiva, trycker mot kopplingsfriktionsytan. Fig. 2 shows a coupling at which the coupling nut, over an axial bearing and a pressure plate, presses against the coupling friction surface.

Ett drivhjul 1 drives pa kant satt Fran en joke visad motor. Pressens excenteraxel 2 ar forsedd med en ganga pa vilken kopplingmuttern 3 ar forskjutbart anordnad. A drive wheel 1 is driven on the edge set From a joke shown engine. The eccentric shaft 2 of the press is provided with a thread on which the coupling nut 3 is slidably arranged.

Vid tiltslagning av kopplingen skruvar sig kopplingsmuttern under inverkan av bromsfjadrar 4 mot drivhjulet. Vid anordningen en- 1 lattar darvid en hromsskiva 5 fran -b- en bromskona 6, vilket betyder att bromsen lossas. En med drivhjulet forbunden och medlopande friktionsskiva 7 fattar kopplingsmuttern och skruvar den vidare. Friktionsskivan ger efter mot inverkan av fjadrar 8 tills kopplingsmuttern ligger an mot axialsparkullagret 9 och drivhjulet trycker mot lionkopplingen 10. Friktionsslutningen blir fullt utbildad mellan drivhjulet och konkopplingen, varfor excenteraxeln kommer att vrida sig med drivhjulet. When the clutch is tightened, the clutch nut screws under the action of brake springs 4 against the drive wheel. In the case of the device, a brake disc 5 from -b- thus omits a brake cone 6, which means that the brake is released. A friction disc 7 connected to the drive wheel and running along takes the coupling nut and screws it on. The friction disc yields against the action of springs 8 until the coupling nut abuts the axial pulley bearing 9 and the drive wheel presses against the lion coupling 10. The friction closure is fully formed between the drive wheel and the coupling, so the eccentric shaft will rotate with the drive wheel.

Vid franslagning av kopplingen blir kopplingsmuttern pa kant satt fasthallen och skruvar sig pa gangan, som vrides av excenteraxeln, i riktning mot bromskonen. Friktionsskivan 7 kommer i vim pd bulthalsarna 11, men kopplingsmuttern forflyttar sig vidare och trycker Over fja.drarna 4 bromsskivan 5 mot hromskonan 6. When disengaging the coupling, the coupling nut is placed on the edge of the retaining member and screws on the passage, which is turned by the eccentric shaft, in the direction of the brake cone. The friction disc 7 comes into contact with the bolt necks 11, but the coupling nut moves further and presses over the springs 4 the brake disc 5 against the chrome cone 6.

I fig. 2 är Ater 1 drivhjulet, 2 excenteraxeln, 3 kopplingsmuttern och 4 bromsfjadrarna. 13d excenteraxeln Si en bromslamellskiva 12 fastkilad, i vilkens tandningar en lamell 13 star I ingrepp. De yttertandade lamellerna 14 star I ingrepp med hromshuset 15. Friktionslamellen 12 a ena sidan ,och de damned samverkande friktionslamellerna 14 bilda saledes bromsen f Or excenteraxeln 2. Pa denna ar vidare en kopplingslamellskiva 16 fastkilad, med vilken en friktionslamell 17 star i ingrepp. Den yttertandade friktionslamellen. 18 och en tryckskiva 19 sta i ingrepp med drivhjulet 1, som Or axiellt fixerat och Riper pa kullager 21. Friktionslamellerna 17, 18 bilda saledes den medelst muttern 3 paverkbara kopplingen mellan drivhjulet 1 och excenteraxeln 2. In Fig. 2, the Ater 1 is the drive wheel, 2 the eccentric shaft, 3 the clutch nut and 4 the brake springs. 13d the eccentric shaft Si a brake disc disc 12 wedged, in the teeth of which a disc 13 engages. The outer toothed slats 14 engage the chrome housing 15. The friction slat 12 on one side, and the co-operating friction slats 14 thus form the brake for the eccentric shaft 2. On this a clutch disc 16 is wedged, with which a friction slat 17 engages. The outer toothed friction lamella. 18 and a pressure plate 19 engage with the drive wheel 1, which is axially fixed and scratches on ball bearings 21. The friction slats 17, 18 thus form the coupling which can be actuated by the nut 3 between the drive wheel 1 and the eccentric shaft 2.

Vid tillslagning av kopplingen skruvar sig kopplingsmuttern 3 under inverkan av bromsfjadern 4 mot en friktionsskiva 20, blir fat-tad av denna ()eh skruvad vidare. Friktionsskivan ger efter mot inverkan av fjadrar 22 till det p0. kopplingsmuttern sittande axialsparkullagret 23 stoder mot tryckskivan 19. Kopplingstrycket blir under friktionsskivans 20 rotation, Over axialsparkullagret och tryckskivan 19 utovat p0 kopplingslamellerna 17, 18. When the clutch is switched on, the coupling nut 3, under the action of the brake spring 4, screws against a friction disc 20, is gripped by this () and is further screwed. The friction disc yields to the action of springs 22 to the p0. the coupling nut seated axial pulley bearing 23 abuts the pressure plate 19. The coupling pressure is exerted on the coupling lamellae 17, 18 during the rotation of the friction plate 20, over the axial pulley bearing and the pressure plate 19.

Urkopplingen av kopplingen Mier daremot genom fasthallning av kopplingsmuttern. Donna 'skruvar sig i riktning mot bromsen, friktionsskivan 20 lagger sig mot huvudet pa bulten 24 och lamnar kopplingsmuttern Fri. The disengagement of the coupling Mier, on the other hand, by holding the coupling nut. Donna 'screws in the direction of the brake, the friction disc 20 rests against the head of the bolt 24 and leaves the coupling nut Fri.

Claims

Patent claim:

Friction coupling for presses, punches, scissors and the like, comprising a coupling nut which is displaced in one go, arranged to exert an abutment force between coupling friction surfaces when displacing in one direction, so that the coupling is switched on, and when shearing in the opposite direction the coupling, wherein the coupling nut is arranged to be displaced in the first-mentioned direction, by it being ramped and tightened by one on one. constantly rotating part of the coupling arranged friction surface, and to be displaced in the other direction, by preventing it from rotating and thereby again 18sgores, can be drawn .clarav, that the coupling nut (3) Or arranged to exert the abutment force between the coupling friction surfaces via an axial bearing (9 resp. 23 resp. ), and the friction surface (7 and 20, respectively) serving for capturing and tightening the coupling nut (3) or resiliently supported.

Friction coupling according to claim 1, characterized in that the serving, constantly rotating friction surface (7) serving for the tightening of the coupling nut (3) is connected rued and supported to the drive wheel (1) of the coupling (Fig. 1). .

Friction coupling for presses, punches and the like according to claim 1, characterized in that the coupling nut (3) is arranged or exerts an abutment force between the coupling friction surfaces (17, 18) via an axial pivot bearing (23) and one with the clutch wheel of the coupling. (1) accompanying pulley (19), with the continuously rotating friction surface (20) serving for tightening the coupling nut (3), is arranged resiliently supported on the pressure plate (19) (Fig. 2). Request publications: Patents from Sweden 166 223; USA 2 175 382.