Papers by Author: Hong Jie Chang

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Authors: Guang Yang, Yong Di Zhang, Lin Nan He, Hong Jie Chang
Abstract: The reverse engineering general with coordinate measuring machine or 3D scanner realize the parts digital,and the measuring equipment is very expensive which limit the reverse engineering application. To solve this problem, this paper uses the higher precision walking mechanism of numerical control machine, adds the special online probe to compose a digital measuring equipment ;it uses the CAD sketch model to drive, which researches the basic representation method of the path information,the distribution form of the measuring point in the different characteristic element,the distinction between the measuring point,the attribution rules and the derived form of the path information of the measuring point. It also includes the development of dedicated reverse soft and the automatic generation of the measuring program reverser path. This method provide a new low cost reverse engineering means which decrease measured data and simplify the reverse engineering.
Authors: Hong Jie Chang, Yi Ping Yang, Yan Fang Yue, Guang Yang
Abstract: This paper introduces the craft process and work principle of the quartz crystal tin dipping machine, and pays attention to elaborate the design content of pneumatic system and control system. The equipments control cores are Siemens small size PLC and industrial touch screen, and selects air cylinder and micro motor as the main executive components, which can guarantee the facilities reliability and flexibility, have strong anti-interference capability. Through long-term spot application, it indicates this tin dipping machine has stable operation, low failure rate and flexible and convenient operation.
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