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无杆气缸和普通气缸的的工作原理一样只是外部连接、密封形式不同
缸两边都是空心的活塞杄内的永磁铁带动活塞杆外的另一个磁体(运动部件)我想说的是
它对清洁度要求蛮高的我们公司的磁偶的无杆气缸经常要拆下来汽油清洗可能与它的工作环
境有关吧。
杆气缸里有活塞,而没有活塞杆的,活塞装置在导轨里,外部负载给活塞相连,作动靠
磁偶式的运动是利用空心活塞杄内的永磁铁带动活塞杄外的另一个磁铁运动来实现的,因其在
速度快,负载高时内外磁环易脱开,故现在比较少用了。其负载质量的大小需查找其质量与速
度的特性曲线。现在机械式的用的比较多。
无杆气缸的分类
无杆气缸分为磁偶无杆气缸和机械接触式无杆气缸。无杆气缸是指利用活塞直接或方式连接外
界执行的机械,并使其跟随活塞实现往复运动的气缸,这种气缸的zui大优点是节省安装空间
(1)磁偶无杆气缸
活塞通过磁力带动缸体外部的移动体做同步移动。它的工作原理:在活塞上安装一组高强
磁性的永久磁环,磁力纬通过薄壁缸筒与套在外面的另一组磁环作用,由于两组磁环磁性相
反,具有很强的吸力。当活塞在缸筒内被气压推动时,则在磁力作用下,带动缸筒外的磁环套
起移动。气缸活塞的推力必须与磁环的吸力相适应。
(2)机械接触式无杆气缸
在气缸缸管轴向开有一条槽,活塞与尚志在槽上部移动。为了防止泄漏及防尘需要,在开
口部采用不锈钢封带和防尘不锈钢带固定在两端缸盖上,活塞架穿过槽地,把活塞与尚志连成
体。活塞与尚志连接在一起,带动固定在尚志上的执行机构实现往复运动,
杆气缸特点
1、与普通气缸相比,在同样行程下可缩小1/2安装装置
不需设置防转机械
适用于缸径10-80mm,zui大行程可达415
速度10m/s
杆气缸缺点
1、密封性能差,容易产生外漏。在使用三位阀时必须选用中压式
受负载力小,为了增加负载能力,必须增加导向机械。无杆气缸实例无杆气缸的品牌
现在市场上流通的无杆气缸主要有ORGA无杆气缸、诺冠无杆气缸、 FESTO无杆气缸、SMC
无杆气缸、小金井等,这几个品牌还是不错的。其中 ORIGA的产品线比较少,是专业做无杆
气缸,也是无杆气缸的发明者,拥有金属密封的专利技术,但整体上的知名度有时比不上其他
几个。

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