切齿

The detail course is to set up the coordinate of the machine and the workpiece, use the intersection of the tool tracing line caused by the adjacent edge in the cutting process as the point on the flank, deduce the function of the flank and program the cutting process of spiral bevel gears using VISUAL BASIC language.

此程序最大的特点就是和实际的加工过程相似——不但齿轮的形成过程和实际相同，而且机床切齿参数的调整过程也和实际一样，因此使用者可以直接在计算机上调整切齿参数，从而根据自己的要求来模拟加工，得到满意的切齿参数，进而在实际机床上获得满意的产品。

The paper shows the structure evolution of bevel and hypoid gear generator as well as its working principles.

介绍螺旋锥齿轮铣齿机的切齿原理和结构演变历程，并对其各自的优缺点进行了比较，为该类机床的设计提供了理论依据。

Analyse the tooth geometry of Klingelnberg Cyclo-Palloid spiral bevel gear.,according to the relative position and kinematic relation of the cutter heads,virtual crown gear and the processed wheel blank,established the system of coordinates of the gear cutting, dedcuced the tooth face equation of the virtual crown gear, according to relations of the gear cutting and space theory of engagement, deduced the tooth face equation of klingelnberg Cyclo-Palloid spiral bevel gear, and drawing the three-dimensional graphs of the virutal crown gear and Klingelnberg Cyclo-Palloid spiral bevel gear according to the design and setting parameters.

根据铣齿加工中刀盘、摇台和轮坯的相对位置和相对运动关系建立了切齿啮合坐标系，由矢量的旋转推导了产形轮齿面方程；根据空间啮合原理和切齿啮合关系推导了被加工齿轮的齿面方程；由设计参数和铣齿调整参数计算得到齿面离散数据，绘制了产形轮和摆线齿锥齿轮的三维齿形。

After analyzing the curvature of the forming surface and the relativ emotion between the forming surface and the curved tooth surface during envelope tooth cutting,the authors work out the equations for calculating the induced normal curvature and geodesic deflection,the principal curvature and direction of the tooth surface of this kind of circular-arc gear .

通过对产形面曲率和包络切齿时产形面与齿曲面相对运动关系的分析，推导出双向圆弧齿轮齿面的诱导法曲率、诱导短程挠率和齿面的主曲率、主方向等计算公式。

As a cutting means of machining hard gears with high precision shaping technology has been wildly used at present. Compare with traditional methods for machining the gard gearsgrinding gobbing shaving and honing shaping is almost the optimum in the case of special structuressuch as the internal gear dual gear and gear with land corner.

插齿工艺做为加工高精度硬齿面齿轮的一种切齿方法，目前已得到广泛的应用，与传统的磨齿、滚齿、剃齿、珩齿等硬齿面齿轮加工方法相比，在加工内齿轮、双联齿轮及带台肩的齿轮等具有特殊结构的齿轮方面，插齿几乎是最优的选择。

Based on the reasons mentioned above a simulation method of cutting process of spiral bevel and hypoid gears is proposed in this paper.

本文利用计算机图形学技术开发出了一套Gleason齿制锥齿轮的切齿加工过程仿真和几何参数分析软件。

In this dissertation, first, based on theory of cutting tooth about the gleason spiral bevel gear, the equation of meshing in the process of cutting tooth, the surface equation of generating gear as well as the general tooth surface equation of the double circular arc spiral bevel gear, using GB12759-1991 type of double circular arc gear as a basic gear profile, a three-dimension solid model of double circular arc spiral bevel gear which has the good adaptability was carried out by used of Unigraphics software;Second, by researching of the algorithm about contact and collision as well as various contact types based upon Contacting Finite Element Method, a foundation was laid for selecting the contact type in analyzing contact stress of double circular arc spiral bevel gearing;Finally, through the connection port of PARASOLID between UG software and ANSYS/LS-DYNA software, the three-dimension solid model of double circular arc spiral bevel gearing obtained above in UG was imported into ANSYS/LS-DYNA, a finite element analyzing about contact stress of double circular arc spiral bevel gearing was carried out by applying new loading method.

本文首先基于格利森弧齿锥齿轮加工原理及切齿啮合过程中的啮合方程、产形轮齿面方程以及双圆弧弧齿锥齿轮的齿面方程，选用GB12759-1991型双圆弧齿轮基本齿廓为基准齿形，利用Unigraphics软件的建模功能，绘制了有较好适应性的双圆弧弧齿锥齿轮传动三维实体模型。其次，描述了应用有限单元法进行实体接触与碰撞问题算法的公式，研究了有限元分析中的各种接触类型以及双圆弧弧齿锥齿轮接触应力分析中所选择接触类型的依据。最后，通过UG软件和ANSYS/LS-DYNA之间的PARASOLID接口工具包，将UG软件中得到的啮合齿轮模型导入ANSYS/LS-DYNA有限元分析软件，给出一种新的加载方法，进行了双圆弧弧齿锥齿轮传动的接触应力的有限元分析。

However, as a result of the calculation and regulation error of cutting machine, the spiral bevel gears that are produced by cutting once are difficult in attaining good contact and transmission quality. Therefore, it is necessary to simulate the transmission of real gears and then to find optimal cutter and cutting machine parameters.

但是，由于人为计算和生产、调整过程的误差，一次试切加工出的弧齿锥齿轮一般难以达到最佳的接触传动质量，因此根据现有切削参数对弧齿锥齿轮进行接触传动的仿真，从而找出较好的切齿刀盘和机床调整参数是非常必要的。

Based on the 3D solid model, the changing trend of spiral angle and pressure angle of pitch cone, the thickness-changing trend of face and pitch cone can be analyzed. In addition, the method of cutting tooth on general NC machining center and the measurement of tooth flank geometry on 3D CMM are conducted.

根据锥齿轮切齿仿真所获得的三维几何模型，本文还研究了在通用四轴联动加工中心上加工锥齿轮齿形的方法和在通用三坐标测量机上进行锥齿轮齿面几何形状误差测量及数据处理方法。

In this paper,Litvin's Local Synthesis Method was used to determine all machine-tool settings for HGM and HGT cutting,with which the location of oontad area,the dimension of contact ellipse,the direction of contact path,the shape and magnitude of transmission error of machined hypoid gear drive can satisfy prescribed requirement aoeurately.

本文应用Litvin的局部综合方法进行了准双曲面齿轮切齿设计的推导。通过一次计算便能获得HGM和HGT加工的准双曲面齿轮的全部切齿参数。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。