The Study And Design Of NC Machining Spiral Groove Of The Needle Valve Fuel Injector

This subject "The study and design of nc machining spiral groove of the needle valve fuel injector" comes from Shandong Heze Huaxing fuel injection equipment company. The work of this subject can be summarized as follow:The quanlity of the part machined on the vertical milling machine after numerical control transformation was not qualified. The result was mainly caused by the tool path differed from the supposed path.The rigid deficiency of the vertical milling machine and the way of feed motion contribute to the result. So this project was adjusted to the new type nc dividing head which can both execute the rotate and linea feed motion on the horizontal milling machine.1. The fisrt step is the rebuilt of the hardware system. The stepping motor which is drived by the nc dividing head drive the fixture execute the rotate and straight feed motion at the same time during the process of machining. Motion control card is the media which express the information between the PC and the fixture to implement the nc control.2. Then divide the sructure of software system and the modules of fuction according to the requirement of the whole project. The module of operation interface as the visual part is to built by the software VC++6.0.3. Simulation of the machining by the way of solid modeling in SolidWorks is to check if there is interference. The expression of the geometric model based on solid modeling should be accord with the pratical part being machining. So the result of the simulation could be as close as the pratical final part.4. Summarize the main study of this subject and offer suggestions for some imperfect aspects.There are innovations of this subject as follow:â‘ using a new way of interpolation baesd on similarity principle to program in the machining the spiral line;â‘¡putting forward a new type of nc dividing head which can both execute the rotate and linear feed motion on the horizontal milling machine.