中走丝线切割操作技术哪个朋友能给提供一下?修刀是怎么操作的?
推荐回答(4个)
一、在被切割部分与母体材料之间粘贴连接铜片。其目的是使工件余留部分在切割时与母体材料相连固定,保证线切割有良好的定位条件,从而保障工件有优异的加工质量,这可依照以下步骤进行
①首先根据加工工件的大小把薄铜片(厚度根据线电极情况和加工部位形状而定)剪成长条形,然后折叠,井保证折叠部分一长一短。采用短铜片的目的是减少铜片的厚度,使上喷嘴更接近工件加工部位,以便于提高加工精度
②然后把铜片折叠的弯曲部分用小手锤锤平,并用什锦锉修理成。
③再把经以上处理的铜片塞到线电极加工所形成的缝隙里,同时在工件该部们的表面滴上502胶水(即环氧树脂瞬时快干胶)。由于切割时,电火花线切割机高压冲水使工件所受压力较大,若单纯用铜片塞紧来保证导电和固定,容易产生以下问题:(a)铜片塞得太松,担心固定不可靠、导电不稳定;(b)铜片塞得太紧,又担心损伤工件表面、破坏形位公差,所以采用502胶水来保证被切割部分与母体材料固定;
④在将铜片塞进加工部位时,应降低上悬臂,使上喷嘴更接近工件以保证加工精度。加工完毕后再将其掰直即可把铜片从缝隙中取出。在此尤应注意是:用502胶水粘贴连接铜片时应远离工件余留部件处,以免502胶水渗到正好位于其下方的导丝嘴的穿丝孔里,造成穿丝孔堵塞。此外粘贴连接铜片的位置应考虑对称分布,且应保证同时塞紧,避免工件发生偏移,以致影响工件加工质量
二、在被切割部分与母体材料之间填充导电铜片。把经折叠、剪齐、锤平和修锉的薄铜片填充在线电极加工形成的缝隙里,并使铜片和缝隙壁紧密贴合。填充此铜片的目的是为了导电,因为前面粘贴连接铜片时用了502胶水,而502胶水是不导电的。为了实现导电要求,故采用填充导电铜片的方法,填充导电铜片时同样应注意铜片的对称布置以及铜片应同时加紧,并且不能塞得过紧以免划伤工件的表面。
简单来说,,,修刀的意思就是重新割一遍,只不过是割的你第一刀的毛边。。
中丝实际上就是在快丝的基础上加了个重复切割。 第一刀,相当于开粗,,*跟快丝一样,但是留有余量。(就是说没有割到你要的那个尺寸,比你的尺寸大一点。)
第二刀,修毛边,这时火花,高频,运丝速度,和各项参数都要比割第一刀的参数要小。(第三刀就更小了)
第三刀,精修了,一般我们这里中丝都是割一修二。好像瑞均机修一刀也比较好看。
快丝割一刀打补偿差不多是0.1吧,,中丝相当于打了三个补偿。反正加起来也是0.1。
我也才做了一年半,自己买的机子,自己做做的累死,没找到大树~~~~没赚到钱就是累~~~!!
希望能帮到你~~~
(上面说的相当于打三个补偿,加起来等于0.1是错的。应该是根据材料厚度第一刀留0.04-0.08之间,第二刀修前面留下的,然后再留0.02。第三刀修掉前面留的0.02.总之修刀偏移量不管是多少,后面那刀都要把他修掉的。这个就要靠自己去试了。)中丝的补偿一般在0.08左右。为什么是0.08呢。因为修刀的时候修不了那么准,会有0.02修不掉。
2015-9-28
(上面说的修刀修不准是错的。其实是火花位。修刀时火花小,火花位可以不用算,所以中丝一般打补偿就是钼丝半径。快丝打补偿就是钼丝半径0.09+0.02) 2019-8-23
中走丝还用刀么?快走丝用的是钼丝,慢走丝用的是铜丝.我还不知道修刀这个名词呢
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