In addition to special machine tools, in recent years, with the development of machining center technology, scholars at home and abroad gradually began to study the use of general machine tools for gear processing. Gao Zhenshan et al. Proposed the machining method of high-speed milling the large wheel of hard tooth hypoid gear with finger milling cutter forming method based on the vertical machining center. Through the design of additional milling device and combined with the process parameters suitable for high-speed milling, the corresponding NC machining program is compiled, and the finger milling cutter is used for semi finishing and hot finishing of the large wheel on the vertical machining center.
Huang Kai and others studied and discussed the method of machining spiral bevel gear by using the four-axis linkage machining center, and put forward the process scheme of machining spiral bevel gear on the four-axis linkage machining center by using the cam function of UG and special fixture. Based on the analysis and calculation of the four control motions necessary for NC Hobbing of non-circular gears, Wang Weixin established the simultaneous mathematical model of non-circular gear hobbing based on four-axis linkage vertical machining center, and put forward the implementation scheme of hobbing non-circular gears on a machining center with strong universality. Meng Jia uses ug8 The cam function of 5 carries out tool path simulation of equal height tooth logarithmic spiral bevel gear.
The correctness of the selected calculation parameters is verified through virtual machining. On the premise of correct parameters, the NC program of the machining center dmu50 is obtained by using the software Siemens NX and the post processor ugpost. Finally, the real tooth cutting test is carried out on the NC machining center. Taking the spiral bevel gear as the research object, Wang Lei proposed the modification technology of the tooth surface of the small wheel completely conjugate with the forming method by using the difference surface equation. Finally, taking a pair of gear pairs as an example, he realized the machining of the modified small wheel on the machining center, and observed the contact area through the roll inspection test.
According to the position relationship between the cutter head and the machining gear, Zhou Qingping deduces the cutter center coordinate and the cutter axis vector through the transformation of spatial coordinate system, so as to realize the relative movement between the cutter and the workpiece, so as to convert the basic parameters of the traditional spiral bevel gear machining machine tool into the parameters matched with the general five axis machining center.