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线性蜗杆副应用非常广泛。一条直线绕一条轴线作螺旋运动,便得到线性蜗杆。根据直线相对轴线的位置,线性蜗杆可分成阿基米德蜗杆(ZA)、法向直廓蜗杆(ZN)、渐开线蜗杆(ZI)。轮齿表面与线性蜗杆螺旋面共轭的蜗轮称为线性蜗轮,两者组成的齿轮副称为线性蜗杆副;它包括阿基米德蜗杆副,法向直廓蜗杆副,渐开线蜗杆副。在线性蜗轮的特定截面上,蜗轮的轮齿廓形是渐开线。以右旋蜗杆左齿面为例,ZA蜗轮的特定截平面是中间平面,ZN蜗轮的特定截平面切于导圆柱上方且平行于中间平面,ZI蜗轮的特定截平面切于基圆柱下方且平行于中间平面。在特定截平面上,线性蜗轮的轮齿廓形是渐开线,是容易证明的。设想将线性
Linear worm gear is widely used. A straight line around an axis for helical movement, we get a linear worm. According to the position of the straight line relative to the axis, the linear worm can be divided into Archimedes worm (ZA), normal straight worm (ZN), involute worm (ZI). Worm gear surface and the linear spiral helical Conjugation of the worm is called a linear worm gear, both composed of a gear pair called linear worm; it includes the Archimedes worm pair, the normal straight-worm, involute worm . In the particular section of the linear worm gear, the gear profile of the worm gear is involute. Taking the right tooth surface of the right-handed worm as an example, the specific section plane of the ZA worm wheel is the middle plane. The specific section plane of the ZN worm wheel is cut at the top of the guide cylinder and parallel to the middle plane. The specific section plane of the ZI worm wheel is cut under the base cylinder and parallel In the middle plane. It is easy to prove that the profile of a linear worm gear is involute at a particular section. Imagine to be linear