【作者】 王亮亮；

【导师】 赵奇平；

【作者基本信息】 武汉理工大学 ， 机械制造及自动化， 2008， 硕士

【摘要】 伴随对产品质量要求的提高,原本应用于生产线检测制动钳钳体静扭强度的试验台已不能满足产品精度的要求。生产线实验设备的产品检测常以效率为主,质量要求次之,故极易出现争议产品,而对待此类产品,企业现有设备无法作出客观的检测结果。本文应企业之需,结合浙江玉环摩托车生产企业关于制动钳总成试验台的开发项目,设计研制出制动钳钳体静扭强度测控系统试验台。本论文研究的测控系统试验设备依照QC/T592—1999——轿车制动钳总成性能要求及台架试验方法标准进行设计,并根据其相关标准判断产品是否合格。该系统主要包括剪切机构、压力调节装置、制动液供给装置和西门子PLC控制系统四部分结构。该试验台产品检测质量,主要取决于制动扭矩与钳口夹紧力精度。剪切机构用于实现钳体总成的装夹定位和传送制动扭矩,故该部分主要从制动钳钳体夹具和动力传动结构入手设计。钳口夹紧力精度取决于压力供给装置,压力调节装置的重点为钳口夹紧力标准值的实现,故压力调节分两步完成,第一步进行压力粗调过程,第二步进行压力微调过程,从而准确控制压力变化。制动液供给系统的设计则以制动液的回收与储存为重点。本试验设备控制系统基于以西门子PLC控制技术,按照试验步骤实现试验台检测动作的自动化。控制系统以模块组态和程序编制为重点,同时吸收以往试验台信息采集电路的经验,选择合适的传感器以及设计驱动放大电路和继电器电路。该控制系统与人机界面相结合,通过操作面板能够控制试验进程,并能实时观测检测数据与信号变化,使得操作人员可完全掌控产品检测的试验过程。本论文设计了测控系统试验设备机械结构的二维图形与实体装配三维图形,完成了气动传递管路、西门子PLC控制系统的程序编制、PLC模块之间以及PLC与被控电磁阀的电路连接。该试验台操作简便,精度高,已成功地应用于企业中,为企业产品的性能检测质量提供了更有效的技术保障,为测控系统试验设备提供了更广阔的应用平台。更多还原

【Abstract】 With the increase of the product quality, the past testing equipment which was used to inspect the stationary strength of braking caliper on line can’t meet the requirement of product precision. The efficiency is the most important to the experimental equipment on line and the quality is little considered, so the disputed production maybe constant. Aim at this phenomenon, the present equipment can’t make right result. So the enterprise must design advanced testing equipment. Combining with the certain product firm, I development a set of testing equipment for testing the stationary strength of braking caliper to accommodate with situation now. The equipment operates easily、precisely and meet the requirement of enterprise.The equipment is designed according to the QCT/592-1999 standard. The control system includes shearing mechanical、pressure-regulating device、braking fluid-supplied mechanics and SIEMENS PLC control system. The testing quality lies on the precision of torque and the caliper force. The braking torque is realized by the internal mechanics of shearing device, so this part design start with caliper fixture and power driving parts. The pressure-regulating system is realized by caliper force, so this part is accomplished by two steps including brief and careful regulating course. The braking fluid-supplied system design emphasize on the recall and store of braking fluid.The control system of testing system emphasizes on the SIEMENS PLC and inspects the automation of equipment. The part includes module configuration and program-written, meanwhile choose suitable sensor and driving circuit when absorbing past experience. The part can observe the data real time and signal variation, and make the operator master the testing course combined with interface.At last, the thesis will finish the two-dimensions drawing and three-dimension assembly of the testing equipment, and accomplish the pneumatic driving pipeline、program-written of SIMENS PLC control system and the connection between PLC and electromagnetic valves. After designing it, the equipment can strengthen the conviction of enterprise、improve product quality and enterprise fame. It also can provide the applying platform for the testing equipment.更多还原