Study On Data Acquisition And Control System In Double-Disc Measuring Apparatus Of Involute Tooth Profile

The involute gear has used widely in aviation, automobile and all kinds of universal machine for example automatic production line because of it have some advantages of fixed drive ratio, constant direction of load, and so on. With the rapid development of modern industry and science and technology, the quality request of gear manufacture has got higher and higher. The quality of gear manufacturing depend on many aspects, among them the gear surveying instrument and the level of measuring and testing techniques is the one of important factors. The technology of involute tooth profile measurement for master gear is important and difficult in its all precision indexs.The Double-disc Measuring Apparatus of Involute Tooth Profile meets the measuring principle of machinery unfolding, which has the characteristics of simple structure, less error aspects, and so on. It is the one of high-precision gear testers, which provided with high accuracy for ultra-precision master gear's tooth profile. However, it caused lower efficiency and operation inconveniently owing to manual measurement absolutely. Along with the rapid development of the computer science technology, the costs of computer hardware are reduced largely and the reliability are enhanced continuously, computer science technology has been applied extensively in the system of testing, therefore combined the computer science technology with testing technology is the modern development trend in the field of measurement. This paper is aims to applying the computer science technology and electronic technology into the Double-disc Measuring Apparatus of Involute Tooth Profile, which not only satisfied the need of measurement accuracy, but designed and implement the semiautomatic testing for involute tooth profile. Programmed the data acquisition and control system software based on VC++6.0. The measuring data firstly were collected by the PCL-818L data acquisition card of ADVANTECH company which was controlled by measuring software. The electronic control circuit was designed and implemented, which mainly used to control motor operation and some measuring buttons, combined with the measurement software, the entire measurement process have achieved semiautomatic. The experiments of inductance type transducer measurement instrument calibration have done for ascertain its accuracy, which has a great impact on data acquisition and measurement results. And make a testing to a precise master gear by this data acquisition and control system. The data acquisition and control system according as the measurement requirement of Double-disc Measuring Apparatus of Involute Tooth Profile, mainly controlled by software, combined with hardware circuit, and have some functions of real-time display, data acquisition and processing, automatic mapping, and so on. It enhanced the measurement efficiency and precision. Through the actual tests show that it has good maneuverability and stability.