铁路客车轴承滚子精密磨削在线检测技术研究

发布时间：2018-04-01 21:40

本文选题：在线检测　切入点：滚子　出处：《河南科技大学》2013年硕士论文

【摘要】：滚子是组成轴承的重要零部件之一，其质量的好坏往往很大程度上影响轴承的使用寿命和动态性能等。近年来，伴随着铁路客车的普遍提速，列车对铁路客车轴承的品质要求也越来越高。传统的铁路客车轴承滚子的磨削加工通常采用离线测量的方法检测滚子的质量，这不仅降低生产效率，且多次装夹所造成的误差使得同批次滚子的互换性降低。针对现有磨削加工后离线测量滚子的诸多不便，本文研究设计了一套基于一种数控滚子磨床的在线检测系统。本文所述的数控滚子磨床是一种采用CBN砂轮的通过控制滚子运动轨迹来实现磨削加工的数控滚子磨床，该磨床采用点接触磨削，一次装夹可完成整个滚子素线面的加工。本文的重点是研究并设计了基于该数控滚子磨床的在线检测系统。本文在基于所述的数控滚子磨床的基础上，借用已有的部分硬件，确定了在线检测系统的总体方案；设计了在线检测系统的测架机构，运用固高公司的嵌入式运动控制器、雷尼绍公司的LP2测头以及安川伺服电机等构成在线检测系统的硬件平台；在Windows XP操作环境下运用VC++软件平台编写系统专用的测量软件；最终，，将软件硬件结合起来实现了铁路客车轴承滚子精密磨削加工的在线检测。研究并设计了试验方法。通过间接的方法，从所述的数控滚子磨床加工过的合格产品中，随机抽取一定数量的样本，在三坐标测量仪上测量，从检测结果的合格率上验证在线检测系统的准确性和可靠性。
[Abstract]:Roller is one of the important parts of bearing, and its quality often affects the service life and dynamic performance of bearing to a great extent.In recent years, with the increasing speed of railway passenger cars, the quality requirements of train bearings are becoming higher and higher.The traditional grinding process of railway bus bearing roller usually uses off-line measurement method to detect the quality of roller, which not only reduces the production efficiency, but also reduces the interchangeability of the same batch roller caused by the error caused by multiple clamps.In view of the inconveniences of off-line measuring roller after grinding, a set of on-line measuring system based on NC roller grinder is designed in this paper.The CNC roller grinder described in this paper is a CNC roller grinding machine which uses CBN grinding wheel to realize grinding by controlling the track of roller motion. The grinding machine adopts point contact grinding and can complete the machining of the whole roller prime line surface by one clamping.The emphasis of this paper is to study and design the online inspection system based on the NC roller grinder.On the basis of the CNC roller grinder mentioned above, this paper determines the overall scheme of the on-line detection system by using some existing hardware, designs the measuring frame mechanism of the on-line inspection system, and applies the embedded motion controller of Gugao Company.The software and hardware are combined to realize the on-line inspection of precision grinding of bearing roller of railway passenger car.The test method is studied and designed.By indirect method, a certain number of samples are randomly selected from the qualified products processed by the NC roller grinder, and measured on a three dimensional coordinate measuring instrument.The accuracy and reliability of the online testing system are verified by the qualified rate of the test results.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH133.3;TP274;TG580.6

【参考文献】