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普通滚子
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     Machining abnormal shape roller with common lathe
     在普通车床上加工异形截面滚子
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     5 Ordinary athletes.
     (E)普通青少年。
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     Ordinary girl
     普通女孩
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     This paper introduces two kinds of methods about machining abnormal shape roller with common lathe.
     介绍在普通车床上加工异型截面滚子的2种方法。
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     Design of profiled rollers
     滚子凸度设计
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  simple roller
A description is given of a simple roller for extruding intraluminal fluids from reproductive and accessory sex organs.
      


The transmission roller chains with O type rubber hermetic rings is a new style of roller chains, which has the special features of the additional O type rings and the lubricating grease poured in advance in the hinge pair of bushes and bearing pins compared with a conventional roller chains. The wearing mechanisms of both the new and a conventional roller chain were experimentally investigated. The microstructure analysis showed that the main wearing characteristic of hinge pair of bushes and bearing pins...

The transmission roller chains with O type rubber hermetic rings is a new style of roller chains, which has the special features of the additional O type rings and the lubricating grease poured in advance in the hinge pair of bushes and bearing pins compared with a conventional roller chains. The wearing mechanisms of both the new and a conventional roller chain were experimentally investigated. The microstructure analysis showed that the main wearing characteristic of hinge pair of bushes and bearing pins of the O type ring roller chains was stress fatigue wear, together with abrasive wear; the main wear characteristic of the conventional one was abhesive wear, together with abrasive wear. The existing problems of home made O type ring chains were analyzed.

通过 O形圈农机滚子链和普通滚子链的台架对比磨损试验 ,研究了两种链条的磨损机制 ,微观分析表明 ,对于销轴和套筒铰链摩擦副而言 ,O形圈链条是以疲劳磨损为主 ,伴随着磨粒磨损 ;普通滚子链是以粘着磨损为主 ,伴随着磨粒磨损。对于 O形圈和链板平面摩擦副而言 ,其磨损机制是以疲劳磨损为主。文中也指出了国产O形圈链条质量上存在的问题

The wear resistance of rubber O ring roller chains and ordinary roller chains for motor cycle was comparatively investigated by road test and simulated bench test. The worn surfaces of the chains were observed as well. It was found that the rubber O ring roller chains showed better wear resistance and longer antiwear life than the ordinary roller chains. The bushes and bearing pins of the rubber O ring roller chains were characterized by stress fatigue wear and adhesion wear; while the chain plate and...

The wear resistance of rubber O ring roller chains and ordinary roller chains for motor cycle was comparatively investigated by road test and simulated bench test. The worn surfaces of the chains were observed as well. It was found that the rubber O ring roller chains showed better wear resistance and longer antiwear life than the ordinary roller chains. The bushes and bearing pins of the rubber O ring roller chains were characterized by stress fatigue wear and adhesion wear; while the chain plate and rubber O rings by stress fatigue wear. The bushes and bearing pins of the ordinary roller chains were characterized by abrasive wear, together with stress fatigue wear. A cyclic surface hardening occurred for the bushes/bearing pair and chain plate/rubber O ring pair in the road test and bench test, which contributed to improve the wear resistance of the pairs.

对 O形橡胶密封圈摩托车滚子链和普通滚子链进行了 6 0 0 0 km道路和 30 0 h台架磨损对比试验 ,分析了磨损表面形貌 .结果表明 :O形圈滚子链比普通滚子链的耐磨性能高 ,寿命长 ;O形圈链条中销轴和套筒的磨损主要以疲劳磨损为主 ,并伴随着粘着磨损 ;链板和 O形圈的磨损为疲劳磨损 ;而普通链条销轴和套筒的主要磨损形式是磨粒磨损 ,并伴随着疲劳磨损 .链条中铰链摩擦副 (销轴和套筒 )的磨损表面产生的循环硬化有利于提高耐磨性 .

The authors commenced the article from the hazards that noise to the human body and environment, for lowering the chain spreads noise, designed the low noise roller chain. To research the performance of noise reduction of the low noise roller chain, we specially did the contrast noise experiments on an equal standard normal roller chain and low-noise roller chain.,and then analyzed and evaluated to the experiment result. The examination that examined by the noise examination organization of authority expressed...

The authors commenced the article from the hazards that noise to the human body and environment, for lowering the chain spreads noise, designed the low noise roller chain. To research the performance of noise reduction of the low noise roller chain, we specially did the contrast noise experiments on an equal standard normal roller chain and low-noise roller chain.,and then analyzed and evaluated to the experiment result. The examination that examined by the noise examination organization of authority expressed that the noise of the low noise chain is lower 6~10dB than that of the normal roller chain in medium and high speeds.

作者从噪声对人体与环境的危害入手,为降低链传动噪声,设计出了低噪声滚子链条。为研究低噪声滚子链降噪性能,特对同等规格普通滚子链与低噪声滚子链做噪声对比试验,并对试验结果进行了分析与评价。经权威噪声检测机构检测表明:低噪声滚子链较普通滚子链在中高速时降噪8~10dB。

 
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