对数螺线型面孔拉刀设计

Design of Broach for Logarithmic Spiral Type Surface Borehole

为改善煤矿带式输送机电动滚筒中高速齿轮轮毂的应力分布,提高其传动精度和传动效率,延长其使用寿命,基于型面联接制造理论与技术,采用了对数螺线作为轮毂轴孔,分析了型面孔的技术要求,确定了对数螺线的参数,设计了对数螺线型面孔拉刀的制造工艺,结果表明拉削加工对数螺线型面孔可行。采用了对数螺线型面联接的电动滚筒装拆方便、使用寿命延长、传动精度和效率提高。对数螺线型面联接在机械工程领域应用前景广阔。

In order to improve the stress distribution of the high gear hub in the electric drum of the belt conveyor, to obviously improve the driving accuracy and the driving efficiency and to extend the service life, base on the mould face connection manufacturing theory and technology, the logarithmic spiral was applied as the hub shaft borehole to analyze the technical requirement of the berehole on the mould face. The parameters of the logarithmic spiral was set up. The paper had a design and research on the design and manufacturing technique of the broach for the logarithmic spiral surface borehole. The results showed that the broaching could be feasible to the logarithmic spiral surface borehole. The electric driving drum with the logarithmic spiral surface connection could be easy to be disassembling and have a longer service life. The driving accuracy and efficiency could be improved. The application outlook of the logarithmic spiral surface connection would be wide in the mechanical engineering area.