制动卡钳摩擦片偏摩影响因素分析

辛庆锋　李航　吴海军　高晓辰　史路浩　汪方俊

摘 要：某车型在盐城试验场进行耐久试验，2.5万公里点檢时发现左后轮卡钳摩擦片已到极限，报警片断裂，制动盘划伤，其他车轮未有异常出现。更换了摩擦片后再次在4.6万公里时出现了异常磨损，为解决该问题，本文对影响摩擦片磨损异常的因素进行了分析和实测，排查出手刹调整工序以及调整的方法对摩擦片异常磨损存在直接影响。经制造基地改善，解决了该问题。为平台车型的开发提供了技术支持！

关键词：摩擦片 异常磨损 分析研究

Analysis of Factors Affecting Partial Friction of Brake Caliper Friction Plate

Xin Qingfeng Li Hang Wu Haijun Gao Xiaochen Shi Luhao Wang Fangjun

Abstract：A certain model was subjected to a durability test at the Yancheng Proving Ground. During the inspection of 25，000 kilometers， it was found that the friction plate of the left rear wheel caliper had reached its limit， the alarm plate was broken， the brake disc was scratched， and no abnormality appeared on other wheels. After replacing the friction plate， abnormal wear occurred again at 46，000 kilometers. In order to solve this problem， this article analyzed and measured the factors affecting the abnormal wear of the friction plate， and found out the adjustment process of the handbrake and the adjustment method to the abnormal wear of the friction plate. There is a direct impact. The problem was solved by improving the manufacturing base. The study provided technical support for the development of platform models！

Key words：friction plate， abnormal wear， analysis and research

1 前言

制动卡钳总成主要包括了制动盘、制动钳、摩擦片等零件组成，制动钳的作用是将制动主缸的液压力转化为摩擦片对制动盘的夹紧力，使车辆减速而停止[1]。制动系统的设计除了需达到预期的制动效果，良好的售后也是设计能力的表现。本文通过对试验车辆摩擦片异常磨损进行分析，研究出驻车手柄在调整时，未进行卡钳间隙调节，直接进行驻车手柄锁紧螺母预紧，导致车辆下线，驾驶员在踩制动过程中，卡钳自调机构工作，由于拉臂初始位置不一致。导致卡钳自调机构过调，使一侧盘、片间隙偏小，车辆行驶过程中摩擦片一直接触制动盘，摩擦片过快磨损。经过对产线驻车手柄调节方式的优化，解决了该问题。为后续项目的开发提供了经验。

2 摩擦片磨损现状调查

某车型在盐城试验场进行耐久路试，在2.5万公里时检查发现左后卡钳摩擦片磨损到极限，同时伴随制动盘划伤，更换摩擦片后继续路试，在4.6万公里时再次出现左后卡钳摩擦片异常磨损，摩擦片磨损图片见图1。……