全金属螺杆减速器设计及运动学分析

Design and Kinematic Analysis of All Metal Screw Reducer

针对现有的涡轮钻具减速器存在的齿轮模数小、轮齿抗弯强度不足、惯性力不易平衡、传动效率低等问题,设计了一种新型的全金属螺杆减速器,该减速器主要由曲柄、螺杆副、花瓣式联轴器和输出轴等组成。为了使其获得最佳输出性能,以螺杆输出转速为研究对象,建立了减速器的3D模型,利用Adams软件对输出转速进行运动学仿真,分析螺杆定转子的配合间隙对减速比的影响。仿真结果显示减速器的减速比大致约等于螺杆定、转子的头数比,但不同间隙值对转动的平稳性影响较大。根据研究结果筛选出了最佳间隙值,为螺杆减速器的设计提供参考。

Aiming at the problems existing in the existing turbodrill reducer,such as small gear modulus,insufficient bending strength of gear teeth,difficult balance of inertia force,low transmission efficiency,a new type of all-metal screw reducer was designed.The reducer is mainly composed of crank,screw pair,petal coupling and output shaft.In order to obtain the best output performance,taking the output speed of screw as the research object,the 3D model of reducer is established,and Adams software is used to carry out kinematic simulation of the output speed,so as to analyze the influence of the fit clearance of screw fixed rotor on the reduction ratio.The simulation results show that the reduction ratio of the reducer is approximately equal to the head ratio of the screw and the rotor,but different clearance values have great influence on the stability of rotation.According to the research results,the best clearance value is selected to provide reference for the design of screw reducer.