The present invention discloses a roller chain sleeve rolling process. The sleeve is made of flat wire and the cross section of the flat silk is rectangular and trapezoid, the middle section of the flat silk is rectangular, the cross section of the flat wire is trapezoid, the long bottom edge of the trapezoid section is butted with the wide edge of the rectangular section, and the roll is round. The inner diameter of the two ends of the sleeve is larger than the inner diameter of the middle section. The inner diameter of the sleeve at both ends of the roll forming is larger than the inner diameter of the middle section. Because the outer diameter of the sleeve is in interference with the inner chain plate hole, the inner diameter of the two ends of the sleeve is the same as the inner diameter of the middle section after pressure loading, thus eliminating the bad shrinkage of the original process sleeve after pressing, and thus improving the wear resistance of the chain and avoiding the chain. The length of the whole is short and meets the design requirements.
【技术实现步骤摘要】
一种滚子链套筒卷制工艺
本专利技术涉及滚子链
,尤其是涉及一种滚子链套筒卷制工艺。
技术介绍
滚子链在装配过程中套筒外径与内链板孔采用过盈配合,如图1和2中所示,由于过盈配合的挤压力使得套筒内孔表面产生“径缩”。径缩导致套筒内壁与销轴的接触为点接触,点接触位置销轴的渗层被快速磨穿,磨损产生的金属碎屑进一步加剧销轴与套筒的摩擦,整体降低了链条的耐磨性能。同时,径缩减少了销轴与套筒的配合间隙,导致链长整体偏短。
技术实现思路
本专利技术针对现有技术的不足,所要解决的技术问题是提供一种滚子链套筒卷制工艺,采用该工艺生产的套筒在装配过程中可以避免产生径缩。本专利技术是通过以下技术方案使上述技术问题得以解决。一种滚子链套筒卷制工艺,套筒采用扁丝料卷制加工,扁丝料截面为矩形与梯形的复合截面,扁丝料的中段截面呈矩形,扁丝料的左右两端截面呈梯形,梯形截面的长底边与矩形截面的宽边等边长对接,经卷圆成形的套筒两端的内径大于中段的内径。作为优选,梯形截面呈直角梯形。总而言之,采用本专利技术的滚子链套筒卷制工艺,卷圆成形的套筒两端的内径大于中段的内径,由于套筒外径与内链板孔为过盈配合, ...
【技术保护点】
1.一种滚子链套筒卷制工艺,其特征是:套筒采用扁丝料卷制加工,扁丝料截面为矩形与梯形的复合截面,扁丝料的中段截面呈矩形,扁丝料的左右两端截面呈梯形,梯形截面的长底边与矩形截面的宽边等边长对接,经卷圆成形的套筒两端的内径大于中段的内径。
【技术特征摘要】
1.一种滚子链套筒卷制工艺,其特征是:套筒采用扁丝料卷制加工,扁丝料截面为矩形与梯形的复合截面,扁丝料的中段截面呈矩形,扁丝料的左右两端截面呈梯形,梯形截...
【专利技术属性】
技术研发人员:冯海波,武道,邢建恒,柳武辉,沈华,孟凡飞,赵保卫,汪恭兵,南星宇,宣成,
申请(专利权)人:杭州东华链条集团有限公司,
类型:发明
国别省市:浙江,33
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