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在拉丝设备中,活套式连续拉丝机因其性能好、效率高等显著优点而占有重要地位。这种型式拉丝机的传动装置一般采用圆柱形蜗轮付(阿基米德蜗杆或延长渐开线蜗杆)。最大限度提高蜗轮付的传动效率和承载能力,对于活套式拉丝机来说是极为重要的。SG-71型蜗轮付是首都钢铁公司工人和我国科技人员在七十年代初期研制成功的一种新型圆弧面蜗轮付,是传动件中的一项重要发明。一般说来它具有:(一)双线接触和多齿接触。接触线与滑动速度的夹角大,齿面综合曲率半径也大。
In the drawing equipment, looper continuous drawing machine because of its good performance, high efficiency and significant advantages occupy an important position. This type of wire drawing machine gear generally cylindrical worm (Archimedes worm or extended involute worm). To maximize the transmission efficiency and load carrying capacity of the worm gear is extremely important for a looper wire drawing machine. The SG-71 worm gear is a new type of arc worm gear developed by workers of Capital Steel Company and Chinese scientists and technicians in the early 1970s. It is an important invention in transmission parts. In general it has: (a) double-line contact and multi-tooth contact. The angle between the contact line and the sliding speed is large, and the integrated radius of curvature of the tooth surface is also large.