In the eraser industry, the eraser extruding machine
is a very important processing equipment. Eraser extruding machine develops with the development of its core component - extrusion screw configuration, so the research of screw configuration is one of the hot spots in the research of eraser extruding machine. Based on the analysis of the structural characteristics of the various screw, the theoretical analysis of rubber extruder was carried out. The extrusion mechanism, main functions, advantages and disadvantages of various screw configurations are analyzed, and the influence of various screw configurations on the extrusion process is analyzed. Studying the working principle of a screw with different configurations and its influence on extrusion process will be conducive to the further optimization of screw structure design and the development of new screw, which will be conducive to the development of eraser industry. Moreover, the research on the structural characteristics of a screw with different configurations is the basis of the development of special CAD system for eraser screw. It is also the basis of optimizing the design function of the special CAD system for eraser screw.
At present, the special-purpose CAD for eraser machinery
mostly adopts some simple secondary development on Auto CAD or PRO-E. This development is based on structured structure. It is not only very poor in reusability but also difficult to meet the diversified needs of complex systems. It is difficult to achieve expansion and reuse, and also difficult to solve the cross-process in the design of special-purpose CAD system for eraser machinery in cross-platform transplantation and distributed applications. To solve these problems, the selection of system design mode and the reusability and scalability of the system become the key points of system design. At present, a variety of design patterns can be used to ingeniously reuse software objects and design the system structure of software from the top-level perspective. Component object model based on COM can fully realize various forms of compatibility based on a binary executable code level, thus realizing reuse well. Component object model based on COM is a feasible way to realize the special CAD system for erasers. Based on the research of different screw configurations, according to the characteristics of screw CAD parametric design of eraser extruding machine,
the structure design of screw automatic generation system of eraser extruding machine is carried out by using C++ object-oriented development language and COM component as a function unit. The system can easily realize future expansion and code reuse and realize distributed application. It improves the efficiency of development. Finally, on the Visual C++ 6.0 development platform, under the guidance of the idea of "feasible way", the development of "automatic generation system of eraser screw" based on COM is completed.