The Study Of CAD & Modeling System For Klingelnberg Cycloid Bevel Gears

Spiral bevel gear presents serials of good performance at transimision, carrying capability etc, of which Klingelnber cycloid bevel gear is mostly widely used. It has its own characteristics:(1)The concave and convex flanks of the gear slot are cut at the same time continuously,this benefit to improve productivity.(2)Universal double cutter heads are used which make it easier to control the tooth contact area.(3)"HPG"cutting method is used to gain a high stress gear with hard tooth flank.(4)Rough cutting and accurate cutting can be completed at the same machine which saves the investment.Since Klingelnberg cycloid bevel gear has these characteristics, it has special advantages and economic benefit for machines in mine, metallurgy and petroleum.Because the design work of this kind of bevel gear mainly depends on software which is attached to the machine imported from abroad, we still have certain limits of its use. So analyze the design theory and cutting principle of this kind of spiral bevel gear and work out a specific computer aided design and modeling system to complete the design calculation and the simulation of the gear will promote the wide use and benefit to raise productivity of the cycloid bevel gears.In this paper, the machine cutting theory and design algorithm of Klingelnberg cycloid bevel gear were studied. The formula of the geometry design were deduced and given. Using object-oriented Visual Basic 6.0 program language as the implement tool, the computer aided calculation module for geometry parametr was implemented. Then based on ActiveX Automation technique, the parametric drawing and modeling module was implemented on AutoCAD2004 platform. Finally achieve a computer aided design and modeling system with comprehensive, reliable, practical and convenient characteristics. The main research work in the thesis is as follows:(1)Base on the analysis of cutting principle and tooth geometry characteristics of Klingelnberg cycloid bevel gear, the formula of tooth design calculation was verified and the equation of imaginary crown gear tooth flank was deduced by establishing appropriate coordinate system.(2)By using object-oriented Visual Basic 6.0 program language the computer aided calculation module was implemented. Numerical computation method was used in the calculation process of some parameters. The module can finish the tooth geometry parameter calculation, stress analysis calculation, stress checking calculation, cutting parameters calculation. Datas can be saved at the designated path.(3)The parametric drawing and modeling module for Klingelnberg cycloid bevel gears was implemented on AutoCAD 2004 platform based on ActiveX Automation technique. Drawings can be saved at the designated path and can be browsed.(4) The modularization, parameterization and function-opening design philosophy is proposed and make the software system easier to be expanded or transplanted. Concise and standard Windows...