Firstly, the cold rotary forging precision forming process of bevel gear is systematically studied. This paper makes a systematic theoretical and experimental study on some problems of cold rotary forging precision forming process and die of bevel gear, deeply analyzes the physical and mechanical essence of cold rotary forging precision forming process, determines the geometric dimension accuracy transfer law and numerical relationship between bevel gear product, female die and electrode, and establishes the process parameters, die Design and calculation method of bevel gear forging, intermediate preform and tool electrode. On this basis, the CAD / CAPP system of bevel gear cold rotary forging precision forming process gearcapp system is constructed by using Visual C + + 6.0 system and Pro / Engineer 200i system.
Gearcapp system is mainly composed of four modules according to the design route of bevel gear cold rotary forging precision forming process. They are: bevel gear part information input module, forging design module, process parameter design module and die design module. Through human-computer interaction, the system can complete the whole design process from the generation of CAD model of gear parts, to the design of forgings, to the determination of process parameters, and finally to the design of tool electrode and die. The system completes the three-dimensional modeling of gear parts, forgings, tool electrodes and dies through the professional CAD / CAM Software System Pro / Engineer 200i system; At the same time, according to the data of CAD part, through the program written by visual c + + 6.0, various process parameters required by the process and dimensional parameters required for electrode correction can be obtained.
The final design results of the system can obtain the complete process information of bevel gear cold rotary forging precision forming process and the geometric models of gear parts, electrodes and dies. The geometric information obtained by the system can be used as NC machining data after being processed by the NC post-processing module of other high-end software. At the same time, the research and development of the system makes a certain attempt and exploration for the research and development of CAD / CAPP system for cold rotary forging precision forming process of other parts.