薄壁环形零件内径检测仪  

Inner Diameter Detector for Thin Wall Annular Parts

作　　者：张爽[1] ZHANG Shuang(Changchun Automobile Industry Institute,Changchun,Jilin Province,130013 China)

机构地区：[1]长春汽车工业高等专科学校,吉林长春130013

出　　处：《汽车知识》2023年第4期130-132,共3页Auto Know

摘　　要：鉴于目前机械结构中很多类似于飞轮齿圈一类的薄壁环形零件在检测过程中所存在的检测结构复杂、检测精度差、检测效率低的一系列问题,该文开发了一款基于周长展开法的内径π规检测结构。这种π规利用钢带本身的柔性,使钢带与工件内径能够紧密贴合,从而得到工件周长的准确变化量(因为齿圈变形绝大多数是低频即形状误差,而非表面波度那样的高频误差),然后又巧妙地利用π点原理将周长变化量直接转化为内径的变化量,稳定高效且简单易行,成本也能大幅度降低,很好地解决了困扰业界多年的齿圈检测难题。该文介绍了这种仪器的基本构造和检测原理,为相关厂商提供了一种新的选择。In view of a series of problems such as complex detection structure,poor detection accuracy and low detection efficiency in the detection process of many thin-walled annular parts similar to flywheel gear ring in many mechanical structures,we developed an inner diameter gauge detection structure based on perimeter expansion method.This T gauge makes use of the flexibility of the steel strip itself,so that the steel strip can be closely attached to the inner diameter of the workpiece,so as to obtain the accurate change of the circumference of the workpiece(because the deformation of the gear ring is mostly a low frequency,that is,a shape error,rather than a high frequency error such as surface wave degree),and then skillfully uses the point principle to directly convert the change of the circumference into the change of the inner diameter,which is stable,efficient,simple and easy to implement,and the cost can be greatly reduced,thus well solving the problem of gear ring detection that has plagued the industry for many years.This paper introduces the basic structure and detection principle of this instrument,which provides a new choice for related manufacturers.

关 键 词：内径π规 飞轮齿圈 最小二乘法 

分 类 号：U461[机械工程—车辆工程]