三辊卷板机卷筒直边的弯卷设计（有图CAD有真相）.rar

三辊卷板机卷筒直边弯卷方法的研究
摘要:三辊对称式卷板机是一种将金属板材弯卷成筒体、锥体、曲面体或其他形体的通用成型设备。经调查发现,在大同周边地区的很多煤炭企业及中小企业仍使用三辊对称式卷板机,但是,在三辊卷板机上卷制圆筒体时,纵焊缝附近往往有一段直边存在,导致筒体纵焊缝处出现最大的附加周向应力,其值可达该筒体周向应力的50%左右。过去,常采用预留直边长度,待筒体卷圆后再切除的办法来消除直边。此办法的缺点是:
(1)浪费大量的金属材料;
(2)采用手工切除直边,坡口不均匀,纵缝的组对间隙不易保证,工人劳动强度大;
(3)直边预留长度不易掌握,易出现直边未消除的现象。
本课题的研究是为解决三棍对称式卷板机在卷制桶形件时的直边问题,包括以下三方面的内容:
(1)根据卷板机的工作原理,分析卷板机卷制筒体时直边的形成因素,确定解决方法,选择解决方案。
(2)板料的弯曲成形原理,分别对于不同板材厚度、不同板材宽度卷制桶形体时,消除直边方法作具体介绍。
(3)对板料卷制过程进行分析,定量给出卷制某一规格板料时直边的处理方法及对卷板机结构进行如何改进,及几何参数的确定与校核。
关键词:三辊卷板机;消除直边;结构和工艺设计。
Three roller veneer reeling machines reels straighten
curved edge book method go into
Abstract:Three dyadic symmetrical roller veneer reeling machines are that a kind of bends metal sheet material e the tube body , cone , the curved surface body roll or other the shape be applied or used universally molding equipment. Enterprise and medium-sized and small enterprises still use three dyadic symmetrical roller veneer reeling machines as a result of inquiring into much coal finding that, in Great Harmony periphery area, but, there exist in a segment of straight edge during the period of three roller veneer reeling machines volume I make the cylinder body, even if brazing seam vicinity sometimes has, lead to the tube body even if the brazing seam maximal additional Zhou Xiang strain appears on place, whose value may reach 50% retinue of that tube body Zhou Xiang strain. Come the length going over , often adopting to reserve the straight edge, to remove straight edge the way cutting off again after the tube body rolls up a circle. This way ing is:
The first,wastes large amount of metal material;
The second,adopt by hand to cut off straight edge , the slope mouth unevenly , worker labour intensity is big even if the group who sews does not exchange guarantee to the gap
The third, reserveing the length of straight edge is not exchanging grasped, phenomenon easy to appear to straighten edge not having eliminated. The problem go into a problem for the v