连杆大小头孔平行度检测装置设计.pdfVIP

摘 要 本测试装置是专门为测试汽车发动机连杆两孔中心线的平行度而设计的。本系统 的设计原则是：全部测试过程自动化，包括测试前的工件夹紧, 测试过程中的数据处理，测试后的试件的自动退出以及测试结果的显示与打印。本装 置的特点是：测试精度较高。 在本系统中，测试时，测试箱和测杆的运动由X 向数控工作台来拖动，数控工作 台由步进电机带动。工件的夹紧装置采用液压系统，因为液压系统夹紧比较平稳，振 动较小，对系统的精度影响较小。 本系统中所采用的传感器是由中原量仪厂生产的差动变压器式电感传感器。 在本系统中，控制器采用8031单片机是由于其既能满足本系统的全部工作需要而 且价格低廉，此外，控制电路扩展了EPROM 、RAM ，联接了键盘，用于程序和数据 的输入，扩展了打印机用于显示打印测试结果，本系统还有A/D转换电路。 本装置是一个完整的测试装置，既可单独用来测试，也可用于计算机集成制造系 统中去。 关键词 测试系统 单片 传感器 控制电路 ABSTRACT This testing set is special designed for testing the centre line parallelism of auto engine link bar’s twain aperture. The design principle of this system is: All testing is roboticized, including the data processing before work piece was clamped , the test piece automatic quit after test, testing result display and mimeograph. The characteristic of this set is: The testing precision relatively higher. In this system, when testing begin, the testing box and the measure pole is dragged by the X direction numerical control table and at the same time, the table was drove by step- electromotor. The fixture adopted hydraulic pressure system, because this system is more placidity and the effect to system’s precision is very small. In this system, the sensor we adopted was differential transformer type made by Zhong Yuan measure meter plant. The controller we adopted was 8031SCM, because it can do all work of the system and the price is cheap. Besides, the control circuit extends EPROM 、RAM and Keyboard, all of these using for the program and data’s input. It also extends the printer for show the result of the testing. This system also has A/D switch circuit. This device is a complete testing device, which can be used for testing alone or in computer integrated manufacturing system. Key word ：Testing