product news/產品新聞
drilled to allow for the pieces to be assembled into a single large ring, the rough gear assembly was turned on a 50-ft. vertical boring mill into a precision-turned blank,” said Ken Bannach, mill operator. “During this process, multiple rough cuts up to an inch deep are performed using large carbide inserts. Te finish machined blank with teeth cut on a MAAG
gear shaper to an AGMA 10 rating was matched to a pair of carburized and ground mill pinions also manufactured at the same facility. Each of the four sections had a ship- ping weight of 68,000 lbs., and the final machined weight of the entire gear was 189,385 lbs. Te result: Rexnord-Falk delivered one of the world’s
largest ring gears to Metso Corp. for use in its heavy min- ing operations. “Te process, from the initial drawings through ship- ping of the finished gear, includes more than 100 highly skilled associates lending their expertise,” said Robert Wiczynski, mill products engineer.
成一个大的单体环形齿轮后，初步装配后的齿轮要在50 英尺的立式镗床上进行精加工。”工厂操作工Ken Ban- nach说：“在这个过程中，使用大型的硬质合金刀片对
多个部位进行1英寸深的粗切削”。 最终的精加工使用马格刨齿机加工齿轮并达到
AGMA（美国齿轮制造商协会）的10级标准，这些齿 轮与一对进行渗碳磨齿处理的小齿轮配合，这些小齿轮 也是在同样的刨齿机上加工。每段运输重量达到68000 磅（约30.84吨），整个齿轮机加工完成后的重量达 189385磅（约85.9吨）。 成果：Rexnord-Falk将世界上最大的一个环形齿轮交 付给美卓公司，用于其采矿业。 工厂产品工程师Robert Wiczynski说：“从最初的设 计草图到运输成品齿轮的整个过程，有超过100名高技 能的相关人员贡献了他们的专业知识”。
The final assembly of four separately cast sections measured 44.3 ft. in diameter and weighed nearly 190,000 lbs.
最终由4部分单体铸件装配的产品尺寸 直径达44.3英尺（约13.5米），重量 约190000磅（约86.2吨）。
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FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION June 2014
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