螺旋内齿圈拉刀精切齿磨削方法研究  

Research on Grinding Method of Finishing Cutting Teeth for Internal Helical Ring Gear Broach Tools

作　　者：贾康 张银行 南凯刚 洪军[1,2] JIA Kang;ZHANG Yinhang;NAN Kaigang;HONG Jun(Key Laboratory of Education Ministry for Modem Design&Rotor-bearing System,Xi’an Jiaotong University,Xi’an 710049;School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710049;Research and Education Development Institute,Xi’an Jiaotong University,Xi’an 710049)

机构地区：[1]西安交通大学现代设计及转子轴承系统教育部重点实验室,西安710049 [2]西安交通大学机械工程学院,西安710049 [3]西安交通大学科技与教育发展研究院,西安710049

出　　处：《机械工程学报》2020年第7期220-230,共11页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51705403);中央高校基本科研业务费专项资金(xjh012019003);中国博士后科学基金(2017M623158)资助项目。

摘　　要：螺旋内齿圈拉刀是加工螺旋内齿圈的重要工具,其精切齿的齿升量结构复杂、齿形精度要求高,对磨削制造的效率和质量提出挑战。针对螺旋内齿圈拉刀的精切齿磨削加工,在对切削齿进行几何结构与刀体分布建模的基础上,以保证磨削表面质量、提升加工效率、易于程序化等为目标,剖析磨削工艺与保障策略,设计出适用于拉刀精切齿精细结构的无干涉磨削工艺与路径实现方法。基于螺旋内齿圈拉刀精切段的双螺旋结构进行切削齿坐标的参数化建模,并对精切齿非对称齿升量的分布模型进行解析与建模。从制造工艺保障与加工效率提升等角度对精切齿的磨削工序进行分析与规划,并设计优化的磨削加工路径,同时提出参数化驱动的精切齿磨削路径控制算法。此外,基于成型磨削接触线对精切齿侧面完备且无干涉磨削的行程进行分析与计算,并进一步针对可行砂轮半径最大化进行磨削工艺条件的优化分析。最后,通过计算一把螺旋拉刀的磨削参数与磨削工艺条件对本研究的实用性进行验证。Internal helical ring gear broach tool is a crucial tool for helical ring gear manufacturing. The complex rise-per-tooth pattern and the high precise of finishing cutting teeth result produce challenge to machining efficiency and quality of surface. In the basis of modelling for the teeth geometry and distribution, this paper planned the interference-free grinding process and path for finishing cutting teeth of broaching tool with investigating the grinding process and ensuring strategy which are aim to ensure the quality of surface, improve the machining efficiency, and easy to programming. Firstly, the mathematic modelling for teeth coordinate is performed based on the dual-spiral distribution of broach tool, and the asymmetric step pattern of rise-per-tooth of finishing cutting teeth is established. Then, the grinding process is analyzed and the optimal grind path is planned with respect the maintain of process and machining efficiency, meanwhile, the parametric-driven algorithm for finishing cutting teeth grinding is developed. Besides, with combing the instant contact line of grinding wheel, the interference-free grinding travel that ensures the complete tooth surfaces machining is calculated, and the optimal condition for maximizing the radius of grinding wheel is investigated in further. At last, the grinding parameters and the optimization conditions are identified for a helical broach tool to verify the effectiveness of this method.

关 键 词：螺旋内齿圈 拉刀 磨削工艺 路径规划 干涉回避 砂轮优选 

分 类 号：TH132[机械工程—机械制造及自动化]