The Clamping System Of Paper Honeycomb Design

At present, adhesive materials are used to clamp paper honeycomb part in the high-speed milling process. Proved by practice, the present clamping processes have many defects, such as the low reliability of clamping, the low part milling precision and the complex procedure of cleaning. The most important is that, the adhesive materials bring harmful influence to worker's health. To solve the disadvantages of the actual method, a new method based on magnetic and friction force to clamp paper honeycomb is proposed by our group. The new method abandons the adhesive materials absolutely, so it is an environmental protection and green manufacturing method, and reduces the clamping cost large scale. In this article, based on the new method and achieved results, the whole clamping system is optimized designed, including clamping platform, a iron powder filling device which can gain the uniform filling region, controllable filling height and a compacting device based on distributed elastic spring. The FEM (finite element method) is used to simulate the rationality of magnetic circuit and structure reliability of the equipment. Machining experiments with the new clamping system show that the clamping result is reliable and the milling part is eligible.In chapter 1, the structure characteristic and the material property of paper honeycomb are introduced firstly. Based on the above property, three commonly used clamping methods are expounded. In order to overcome the shortcoming of current method, a new method based on magnetic and friction force is proposed to clamp the paper honeycomb. The entire clamping system has been optimized design using the fixture theory and the achieved results. In the end, research content and chapter structure of this dissertation are given.In chapter 2, the new method based on magnetic and friction force is introduced firstly. Then the generation principle of friction force is expatiated via researching the affecting factors of friction force. Based on experiment, the reliability of the clamping is analyzed. And based on the analyzed parameters, the magnetic circuit and magnetic parameters are designed. Finally, the iron powder is confirmed, the magnetic influence of manufacturing equipment is studied. According to the above theory, a new technical process is proposed.In chapter 3, the function of the platform is expatiated firstly, then the structure is designed primarily. Using Ansoft Maxwell, rationality of magnetic circuit is analyzed. According to the analysis results, the magnetic circuit structure is improved. Finally a magnetic platform is manufactured. The experiment about the reliability of the clamping system is done using the platform, and the result is exciting.In chapter 4, the function of curved module is introduced firstly. Then the structure of the curved module is designed primarily. Ansoft Maxwell is used to analyze the rationality of magnetic circuit. And the magnetic circuit is tested correctly. Finally curved modules are manufactured based on above principle.In chapter 5, the composing of assistant system, including iron powder filling device and compacting device, is introduced. The uniform filling region, controllable filling height of filling device and reliability of the compacting device are analyzed firstly. Then the structure and working principle of the assistant system are detailed introduced. Finally the assistant equipment is manufactured and has been used in practice successfully.In chapter 6, systematical summary about research content is given, and future work is put forward.