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汽车车轮是一个重要的装配部件,EQ140汽车车轮装配技术条件规定,螺栓拧紧检查扭矩为28～42kg·m。总装厂用 B24扳手往往达不到要求,合格率仅为10%左右。另外,B24为冲击型单头扳手,工作时噪声大,振动厉害,装一台车需操作24次,工人劳动强度大,也很疲劳。为了提高装配质量,改善操作条件,经工艺处和总装厂共同研究,要求我厂研制气控定扭矩组合扳手,以适应车轮装配的需要。在多方配合下,四轴气控定扭矩组合扳手已经二轮研制成功,能满足了装配要求,并被总装厂正式纳入工艺文件。
Car wheel is an important assembly parts, EQ140 car wheel assembly technology conditions, tightening torque test bolt 28 ~ 42kg · m. Final assembly factory with B24 wrenches often fail to meet the requirements, the passing rate of only about 10%. In addition, B24 impact type single-headed wrenches, work noise, vibration, equipped with a car to be operated 24 times, workers labor-intensive, but also very tired. In order to improve the assembly quality, improve the operating conditions, the process and the assembly plant joint research, requiring our factory to develop gas-controlled torque combination wrenches to meet the needs of the wheel assembly. Under the cooperation of many parties, the four-axis gas-controlled torque combination wrench has been successfully developed in the second round to meet the assembly requirements and was officially incorporated into the process documentation by the assembly plant.