Users of secondary development of utoCAD can derive directly from the two gear types of the system when developing more complex gears, which fully reflects the reusability of object-oriented software design. At the same time, the system also provides a friendly human-machine interface, allowing users to generate the required three-dimensional involute gear directly in AutoCAD. The general process of implementing the system of the software system. The whole process is divided into two parts. The parameter input dialog box is the man-machine interface of the system, which is used to input the basic parameters of the involute gear such as the gear modulus, the number of gear teeth, and the pressure angle of the index circle.
The main implementation of 3D gears and 2D gears is AcDb3dGear, a system-defined 3D gear class, which generates an instance of the 3D gear in the AutoCAD database. The AcDb3dGear class has a member object of AcDb2dGear. AcDb2dGear is a class of two-dimensional involute gear tooth shapes, which is a difficult point in gear modeling. The process of generating a tooth shape. The generation of the involute of the tower crane price is a difficult point of the two-dimensional gear tooth profile. The user interface of the human machine interface in generating the involute gear instance is in the form of a dialog box. Dialogs are generated using ObjectARX from the CDialog-derived CacUiDialog in MFC, which makes it easy to design and generate dialogs using the Visual C platform. Make it a friendly interface for Windows. Generating Gear Examples Finally, the system was used to generate 3D gear shapes on AutoCAD2000. The software's user-friendly interface allows the user to easily generate the required gears.
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