CS259293B1 - Sliding bearing for high-speed press crankshaft - Google Patents
Sliding bearing for high-speed press crankshaft Download PDFInfo
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- CS259293B1 CS259293B1 CS87246A CS24687A CS259293B1 CS 259293 B1 CS259293 B1 CS 259293B1 CS 87246 A CS87246 A CS 87246A CS 24687 A CS24687 A CS 24687A CS 259293 B1 CS259293 B1 CS 259293B1
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- press
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- oval
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- Sliding-Contact Bearings (AREA)
Abstract
Klzné ložisko klukového hriadela rýchlobežného lisu majúce v řeze kolmom na os rotácie hriadefa tvar oválu je riešené tak, že vedlajšia os oválu je natočená voči zvislej osi lisu o uhol rovný najpravdepodobnejšiemu odklonu max. výslednej sily posobiacej na klzné ložisko od zvislej osi lisu.High Speed Bearing Shaft Bearing press having a cross section perpendicular to the axis the rotation of the shaft the shape of the oval is solved that the axis of the oval is filmed against the vertical the axis of the press by an angle equal to the most likely deflection max. the resulting strength of the post on the plain bearing from the vertical axis of the press.
Description
Vynález sa týká klzného ložiska klukového hriadela rýchlobežného· lisu.The invention relates to a sliding bearing of a crankshaft of a high-speed press.
Pri zvyšovaní počtu zdvihov u klukového lisu dochádza pri uložení klukového hriadeía v klasických válcových klzných ložiskách k zvýšenému opotrebeniu nástroja v důsledku poměrně velkej ložiskovej vole. Je známe riešenie tejto nepriaznivej situácie pomocou tzv. citrónových ložísk. Ich tvar však vytvára podmienky pre zvýšené kavitačné opotrebenie ložísk.As the number of strokes of the crank press increases, when the crankshaft is mounted in conventional cylindrical plain bearings, the tool wear increases due to the relatively large bearing shaft. It is known to solve this unfavorable situation by means of so-called. lemon bearings. However, their shape creates conditions for increased cavitation wear of the bearings.
Priaznivé jšie podmienky vznikajú u ložísk tvaru oválu, elipsy, viacplochých ložísk s pružné deformovaným púzdrom, resp. segmentových.Favorable conditions arise for bearings in the form of oval, ellipse, multi-flat bearings with elastically deformed bushing, resp. segment.
Ziadne zo známých riešení však nerešpektuje fakt, že směr sily zaťažujúcej ložisko klukového hriadela lisu nie je totožný so zvislou osou lisu, ale je natočený voči nej o určitý uhol závislý od konštrukcie klukového mechanizmu lisu, vykonávanej technologickej operácie, typu mazania ložiska a počtu zdvihov lisu. Dochádza tak k neefektívnemu využitiu tuhosti mazacej vrstvy ložiska, váčším výkmitom klukového hriadela a zvýšenému opotrebeniu nástroja lisu.None of the known solutions, however, respects the fact that the direction of load applied to the bearing of the crankshaft of the press is not identical to the vertical axis of the press, but is rotated relative to it by an angle dependent on the design of the press mechanism, the operation performed, type of bearing lubrication and number of presses . This results in inefficient use of the stiffness of the bearing lubrication layer, greater crankshaft oscillation and increased wear on the press tool.
Podstatou vynálezu je, že ložisko tvaru oválu je natočené svojou vedlajšou osou do směru pósobenia maximálnej výslednej sily v ložisku pri štatisticky najpoužívanejšom počte zdvihov a technologickej operácii konkrétného lisu.It is an object of the invention that the oval-shaped bearing is rotated with its minor axis in the direction of the maximum resultant force in the bearing at the most statistically used number of strokes and the technological operation of a particular press.
Výhodou tohoto riešenia je optimálně využitie max. tuhosti mazacej vrstvy ložiska a tým zníženie opotrebenia nástroja lisu a tiež zelpšenie odvodu tepla z ložiska.The advantage of this solution is optimal utilization of max. the stiffness of the bearing lubrication layer, thereby reducing the wear of the press tool and also facilitating heat dissipation from the bearing.
Na výkresu je znázorněný prierez klzným ložiskom klukového hriadela podlá tohoto vynálezu.The drawing shows a cross section of a sliding bearing of a crankshaft according to the invention.
Hriadel' 1 o poloměre Ro sa otáča v klznom ložisku 2 tvaru oválu, ktorého vedlajšia os o2 je natočená voči zvislej osi lisu o0 o uhol χ zodpovedajúci najpravdepodobnejšiemu odklonu max. výslednej sily pósobiacej na klzné ložisko 2.The shaft 1 of radius R o is rotated in an oval-shaped plain bearing 2, whose secondary axis o 2 is rotated by 0 o relative to the vertical axis of the press by the angle χ corresponding to the most likely deflection of max. the resulting force acting on the plain bearing 2.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS87246A CS259293B1 (en) | 1987-01-14 | 1987-01-14 | Sliding bearing for high-speed press crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS87246A CS259293B1 (en) | 1987-01-14 | 1987-01-14 | Sliding bearing for high-speed press crankshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS24687A1 CS24687A1 (en) | 1988-02-15 |
| CS259293B1 true CS259293B1 (en) | 1988-10-14 |
Family
ID=5334238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS87246A CS259293B1 (en) | 1987-01-14 | 1987-01-14 | Sliding bearing for high-speed press crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS259293B1 (en) |
-
1987
- 1987-01-14 CS CS87246A patent/CS259293B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS24687A1 (en) | 1988-02-15 |
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