攻丝卡头在工业生产中应用极广,而尤以机械行业更为普遍。多年来,攻丝一直存在着丝锥装卸不方便,同心度低、精度及效率低的弱点。为了解决不足之处,我们找了不少有关技术资料,结合日本的快换卡头样品,研制成了攻丝快换卡头,现将此卡头的结构、测试及部份计算加以介绍。攻丝快换卡头具有外形美观、体积小、重量轻、安全可靠等优点,是攻丝作业中的先进辅助工具。在结构上与我们通常用的摩擦片式卡头不同,摩擦片式卡头是靠摩擦片之间的摩擦力来传递扭矩,而这种卡头是靠摩擦块外涨压缩橡胶块而产生压缩弹力,靠这种弹力来传递扭矩。当此弹力与丝锥切削扭矩相当,则正常进行工作。当超过此扭矩,可换套与摩擦块打滑脱开,因此,保护丝锥不折 Tapping chuck in industrial production in a very wide range of applications, especially in the machinery industry is more common. Over the years, tapping has always had the inconvenience of tap loading and unloading, low concentricity, low accuracy and low efficiency. In order to solve the shortcomings, we find a lot of technical information, combined with Japan’s quick change chuck sample, developed a tapping quick change chuck, now this chuck structure, testing and some calculations are introduced. Tapping quick change chuck with beautiful appearance, small size, light weight, safe and reliable, etc., tapping operations in the advanced auxiliary tools. Structurally different from the friction plate chuck that we usually use, the friction plate chuck is to transmit the torque by the friction force between the friction plates, and the chuck head is compressed by compressing rubber blocks outside the friction blocks Elastic, by the elastic force to transmit torque. When this stretch and tap cutting torque is quite normal work. When this torque is exceeded, the changeable sleeve slides off from the friction pad, so the protection tap does not fold