CS264958B1 - The device for balancing inertial masses at a crank press - Google Patents

The device for balancing inertial masses at a crank press Download PDF

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Publication number
CS264958B1
CS264958B1 CS87252A CS25287A CS264958B1 CS 264958 B1 CS264958 B1 CS 264958B1 CS 87252 A CS87252 A CS 87252A CS 25287 A CS25287 A CS 25287A CS 264958 B1 CS264958 B1 CS 264958B1
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CS
Czechoslovakia
Prior art keywords
connecting rod
counterweight
balancing
press
crank
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Application number
CS87252A
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Czech (cs)
Slovak (sk)
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CS25287A1 (en
Inventor
Ladislav Ing Vargovcik
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Vargovcik Ladislav
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Priority to CS87252A priority Critical patent/CS264958B1/en
Publication of CS25287A1 publication Critical patent/CS25287A1/en
Publication of CS264958B1 publication Critical patent/CS264958B1/en

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Abstract

Riešenie sa týká problému vyvažovania súhrnného účinku zotrvačného krútiaceho momentu všetkých ojnic v pohone klukového lisu, v ktorom od vyvažovacej kluky klukového hriadela pootočenej voči hlavným klukám o 180° je cez ojnicu pomocou ojničného čapu posúvané v priamom vedení protišmýkadlo. Podstatou riešenia je, že po stranách ojnice sú na klukovom hriadeli v osi jeho otáčania otočné uložené zlava prvé protizávažie a sprava druhé protizávažie, v ktorých je svojimi koncami upevněný unášaci čap, pričom jeho středná časť je uložená v ojnici posuvné v smere jej pozdlžnej osi.The solution concerns the problem of balancing the combined effect of the inertial torque of all connecting rods in the drive of a crank press, in which a counterweight is moved in a direct line from the balancing crank of the crankshaft rotated 180° relative to the main cranks through the connecting rod by means of a connecting rod pin. The essence of the solution is that on the sides of the connecting rod, on the crankshaft in the axis of its rotation, a first counterweight is rotatably mounted on the left and a second counterweight is mounted on the right, in which a driving pin is fixed with its ends, while its central part is mounted in the connecting rod sliding in the direction of its longitudinal axis.

Description

264958 2264958 2

Vynález sa týká zariadenia na vyváženie zotrvačných hmót u klukového lisu.The invention relates to a device for balancing inertial masses of a crank press.

Pri zvyšovaní počtu zdvihov u klukových lisov dochádza k nepriaznivým účinkOm vplyvomzotrvačných hmót. Doposial známe prevedenia riešia tento problém bud protizávažím upevněnýmexcentricky na klukovom hriadeli s excentricitou pootočenou voči excentricitám hlavnýchklúk o 180°, čo však nerieši účinky vertikálně sa pohybujúcich hmdt, alebo protizávažím,ktorého pohon je odvodený od kluky klukového hriadela pootočenej o 180° voči hlavným klukámcez vlastnú ojnicu. Nevýhodou tohoto riešenia je nevyváženosť zotrvačných krútiacich momentovojníc, podobné ako u systémov, kde je vyvažovanie riešené systémom vertikálně a horizontálněkmitajúcich protizávaží s klukovo-pákovým pohonom od hlavných ojníc lisu. Nevyváženosťkrútiacich momentov nepriaznivo vplýva na stabilitu lisu a vynucuje si presnejšie a týmaj pracnejšie vyvažovacieho mechanizmu, ako i uloženia lisu.When increasing the number of strokes in the crank presses, there is an adverse effect of the effects of the inertial masses. So far known solutions solve this problem either by counter-weight fixed eccentrically on the crankshaft with the eccentricity rotated by 180 ° against the eccentricities of the barrel, but this does not solve the effects of vertically moving masses or counterweights, whose drive is derived from the crankshaft crank rotated 180 ° relative to the main crankcase. ojnicu. The disadvantage of this solution is the imbalance of inertia torque, similar to that of systems where the balancing is solved by a system of vertically and horizontally oscillating counterweights with a crank-lever drive from the main presses of the press. The unbalance of the twisting moments adversely affects the stability of the press and enforces more precisely and more laboriously the balancing mechanism as well as the press fit.

Nevýhody doposial známých zariadení pre vyváženie zotrvačných hmót u klukového lisuodstraňuje navrhované riešenie, v ktorom od vyvažovacej kluky klukového hriadela pootočenejvbči hlavným klukám o 180° je cez ojnicu pomocou ojničného čapu posúvané v priamom vedeníprotišmýkadlo, a ktorého podstatou je, že po stranách ojnice sú na klukovom hriadeli v osijeho otáčania otočné uložené zlava prvé protizávažie a sprava druhé protizávažie, v ktorýchje svojimi koncami upevněný unášací čap, pričom jeho středná časť je uložená v ojnici posuvnév smere jej pozdlžnej osi.Disadvantages of the hitherto known devices for balancing inertial masses in a crank press are eliminated by the proposed solution in which from the balancing jack of the crankshaft rotating to the main jacks by 180 °, a straight guide is pushed through the connecting rod by means of a connecting rod, and the shaft rotatably mounted in the axial rotation of the first counterweight and the right of the second counterweight, in which the drive pin is fixed by its ends, the central part of which is displaceable in the connecting rod in the direction of its longitudinal axis.

Zariadenie podlá uvedeného vynálezu umožňuje úplné eliminovat zotrvačné sily a podstatnéznížiť zotrvačné krútiace momenty v pohone lisu. Ďalšou výhodou tohoto riešenia je, že hmotaprotizávažia sa nepripočítava k brzděným hmotám a nezvyšuje tak požiadavky na velkost potřebného brzdného momentu brzdy lisu.The device according to the present invention makes it possible to completely eliminate inertia forces and substantially reduce inertia torques in the press drive. Another advantage of this solution is that the mass of the counterweight is not added to the braked masses and thus does not increase the requirements for the size of the required braking torque of the press brake.

Na pripojenom výkrese je znázorněná inštalácia zariadenia na vyváženie zotrvačnýchhmót podlá tohoto vynálezu u dvojbodového klukového lisu, kde na obr. 1 je nárys hornejčasti lisu s pozdlžnym rezom priečnika vo zvislej rovině prechádzajúcej osou otáčania klukové-ho hriadela a na obr. 2 je rez priečnikom lisu v rovině A-A. V stojane lisu JI je otočné uložený klukový hriadel 5, na ktorého hlavných klukách15 a 16 sú otočné prichytené hlavně ojnice 3 a 4, svojím druhým koncom spojené s baranom 2.In the accompanying drawing, there is shown an installation of an inertial balance device according to the present invention in a two-point crank press, wherein FIG. 1 is a front elevational view of the press with a longitudinal cross section in a vertical plane passing through the axis of rotation of the crankshaft and FIG. in the AA plane. The crank shaft 5 is rotatably mounted in the press frame J1, on which mainly the connecting rods 3 and 4 are pivotally fastened on their main cranes 15 and 16 connected to the ram 2 by their second end.

Na vyvažovacej kluke 17 hriadela 5 je otočné uchytená ojnica ktorá je svojím opačnýmkoncom otočné připevněná k ojničnému čapu 7, pevne zachytenému v protišmýkadle 8, ktoréje posuvné uložené vo vedení 9 priečnika lisu 2· Po stranách ojnice 6 sú na ložiskách 10a 11 na klukovom hriadeli 5 otočné okolo osi otáčania klukového hriadela ji uložené zlavaprvé protizávažie 12, sprava druhé protizávažie 13, v ktorých je svojimi koncami neposuvneuchytený unášací čap 14 tak, že svojou středovou častou prechádza telesom ojnice 6, v ktorejje uložený posuvné v smere jej pozdlžnej osi.On the balancing bolt 17 of the shaft 5, there is a rotatably attached connecting rod which is rotatably mounted to the connecting rod 7 in its opposite end, which is slidably mounted in the guide 9 of the press 2 · On the sides of the connecting rod 6 there are on the bearings 10 and 11 on the crankshaft 5 pivoted about the axis of rotation of the crankshaft, the counterweight 12, placed at the first and second ends, of the counterweight 13, in which the drive pin 14 is uncontrolled by its ends so that it passes through the body 6 of the connecting rod 6 in which it is displaceable in the direction of its longitudinal axis.

Vyvažovači účinok zobrazeného zariadenia je dosiahnutý tým, že vyvažovacia kluka 17je pootočená voči hlavným klukám 15 a 16 o 180°, čím vzniká protibežný účinok protišmýkadlají voči baranu 2 a vychylovaním ojnice 6 pri rotácii klukového hriadela ji dochádza k striedavé-mu natáčaniu zlava prvého protizávažia 12 a sprava druhého protizávažia 13 a tým k vyvažovaciemu účinku voči zotrvačným krútiacim momentom vyvolaným natáčaním hlavných ojníc 2 a Aa ojnice 6.The balancing effect of the illustrated device is achieved by the counterbalance 17 being rotated by 180 ° relative to the main jaws 15 and 16, thereby producing an opposing anti-slide effect against the ram 2 and rotating the rod 6 in rotation of the crankshaft to alternate rotation of the first counterweight 12 and a second counterweight 13, and thereby a counterbalance to the inertia torque caused by the pivoting of the main connecting rods 2 and Aa of the connecting rod 6.

Uvedený vynález možno využit u klukových lisov s vysokým počtom zdvihov za minútu,pričom jeho přínos rastie priamo úměrně s menovitou silou lisu.The present invention can be utilized for high-stroke crank presses, the benefits of which increase directly in proportion to the press force of the press.

Claims (1)

3 264958 PREDMET VYNALEZU Zariadenie pre vyváženie zotrvačných hmůt u klukového lisu, v ktorom od vyvažovačejkluky klukového hriadela pootočenej voči hlavným klukám o 180° je cez ojnicu pomocou ojničného čapu posúvané v priamom vedení protišmýkadlo, vyznačujúce sa tým, že po stranách ojnice(6) sú na klukovom hriadeli (5) V osi jeho otáčania otočné uložené zlava prvé protizávažie(12) a sprava druhé protizávažie (13) , v ktorých je svojimi koncami upevněný unášací čap(14), pričom jeho středná část je posuvné uložená v ojnici (6) v smere jej pozdlžnej osi. 1 výkres tt3 264958 OBJECT OF DEPOSIT A device for balancing inertial masses in a crank press, in which a non-skid is passed through a connecting rod by means of a connecting rod by means of a connecting rod and by 180 °, by means of a connecting rod. on the crankshaft (5) in the axis of rotation of the first counterweight (12) rotatably mounted and on the right the second counterweight (13), in which the drive pin (14) is fastened by its end, and its central part is displaceable in the connecting rod (6) in the direction of its longitudinal axis. 1 drawing tt
CS87252A 1987-01-14 1987-01-14 The device for balancing inertial masses at a crank press CS264958B1 (en)

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CS87252A CS264958B1 (en) 1987-01-14 1987-01-14 The device for balancing inertial masses at a crank press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS87252A CS264958B1 (en) 1987-01-14 1987-01-14 The device for balancing inertial masses at a crank press

Publications (2)

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CS25287A1 CS25287A1 (en) 1989-01-12
CS264958B1 true CS264958B1 (en) 1989-09-12

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