渐开线锥形齿轮变速装置的设计原理

本文依据齿轮啮合原理 ,详细地分析了渐开线锥形齿轮的滚削成形理论 ,推导了加工产形齿条及锥形齿轮主要参数的关系 ,提出了相交轴锥形齿轮变速装置的设计原理和方法。这种新型的变速装置具有传动零件少、变速级数多和易调传动齿轮齿侧间隙等优点 ,最后用一设计及试验实例证明了本文理论正确 ,设计方法可靠

DESIGN PRINCIPLE OF CHANGE-SPEED INVOLUTE CONICAL GEAR TRAIN

A theory of hobbing involute conical gears on a hobber with a horizontal feed motion is described in the light of the gear engagement principle.The relations among some important parameters of the imaginary rack shaper cutter and the generated gear are analyzed,and the design method of a change speed train mainly composed of intersected involute conical gears is considered in detail.It has many special advantages such as many speed degrees only with a few gears,adjustable gear clearance by changing position of the gear along with their axes respectively.Because in designing this kind of train it is very important how to minimize the volumn and size and how to maximize the changable speed degrees and the difference between the highest degree and the lowest degree.A practical method is provided to control some key parameters to reach these goals.The present theory is proved correct and the method is shown practical by tests of a sample change speed train.