共查询到20条相似文献,搜索用时 63 毫秒
1.
2.
3.
4.
5.
6.
本文根据克林根贝格制摆线锥齿轮齿面形成过程,并利用矢量回转及坐标变换矩阵公式,建立切入运动和展成运动的过程模型,是研究通用数控机床进行摆线锥齿轮铣齿加工的基础:展成齿廓渐开线的过程可描述为无数相对瞬时齿面包络的过程,此过程模型的建立,是研究数控机床加工摆线齿锥齿轮的~qttl。 相似文献
7.
针对弧齿锥齿轮在设计中计算量较为复杂且又容易出错的问题,介绍了如何建立弧齿锥齿轮优化设计的数学模型,用以提高弧齿锥齿轮减速器的设计效率. 相似文献
8.
9.
研究了弧齿锥齿轮小轮机床加工参数反求的算法实现问题。推导了变性法加工的弧齿锥齿轮小轮齿面方程,建立了理论齿面向目标齿面逼近的最小二乘法优化模型,采用基于置信域策略的Levenberg-Larquardt迭代算法反求小轮的机床加工参数,并与广义逆矩阵法、截断奇异值分解法进行了比较。以小轮的某种修形齿面为例,3种算法识别的齿面与目标齿面的残余偏差平法和分别为1.472 3×10-3 mm2、8.296 9×10-4 mm2、1.499 3×10-5 mm2。结果表明,相对于前两种识别算法,采用基于置信域策略的Levenberg-Marquardt迭代算法可以大大提高齿面逼近的精度。该迭代算法为弧齿锥齿轮的齿面误差修正技术及齿面主动修形设计提供了应用基础。 相似文献
10.
11.
12.
Xiao-zhong Deng Geng-geng Li Bing-yang Wei Jing Deng 《The International Journal of Advanced Manufacturing Technology》2014,71(5-8):1049-1057
In order to solve some common problems of CNC-machined spiral bevel gears such as small cutting strip width and poor surface quality, while milled by the ball-end, a machining method of face milling using a disk cutter with a concave end is presented. The research theories are based on the foundation of spiral bevel gears’ geometry structure. Firstly, a bigger diameter disk cutter with a concave end is selected. Then, change the setting order of cutter orientation angles. The functions of cutter tilt and yaw angle are separated, and tooth surfaces machined with big cutting strip width and no bottom land gouge can be expected. Since the cutter yaw angle, determined firstly by cutting contact point, positions in the tooth surface machine, the bottom land gouge interference can be avoided effectively. Then, the tilt angles of the gear pair, both side tooth surfaces, are determined by the theory of sculptured surfaces machined by the flat-end cutter, respectively. As a result, the improved cutting strip width and machining efficiency can be realized. Finally, feasibility of this method is verified through machining experiment and measurement of a spiral bevel gear pair. 相似文献
13.
通过齿面点离散的方法,评判机床调整参数误差对螺旋锥齿轮齿面误差的影响程度,进一步分析齿面形状变化趋势,指出了由于齿面误差引起啮合区位置偏移,从而导致的不良啮合状态,为机床误差补偿及提高螺旋锥齿轮的制造精度提供了依据. 相似文献
14.
Yi-Pei Shih Ya-Chuan Huang Yi-Hui Lee Jhih-Ming Wu 《The International Journal of Advanced Manufacturing Technology》2013,68(9-12):2499-2515
Face hobbing is a continuous indexing and double-flank cutting process whose high productivity and precision has made it one of the leading methods for fabricating spiral bevel and hypoid gears. The current method is inappropriate, however, for cutting straight bevel gears (SBGs) because it generates extended epicycloidal flanks. Nonetheless, a mathematical model of a face-hobbed SBG was successfully established in earlier research that enables straight cutting paths to cut straight tooth spaces based on a hypocycloidal straight-line mechanism in which the rolling circle radius equals half the base circle radius. This mathematical model, however, is based on a virtual universal cradle-type bevel gear cutting machine that has not yet been developed. This paper therefore proposes another mathematical model of face-hobbed SBG based on a modern six-axis computer numerical control (CNC) bevel gear cutting machine. The six-axis nonlinear machine settings are derived through conversion from the cradle-type machine settings. Meanwhile, the usage of electric gearbox (EGB) for bevel gear cutting is not revealed because of commercial consideration. Therefore, we also provide a solution to use EGB of Fanuc 16i CNC controller. A cutting experiment validates the proposed mathematical models using our developed six-axis CNC bevel gear cutting machine to cut the face-hobbed SBGs. Finally, a flank topographic correction is made that, according to postcorrection simulated topographic errors, can effectively reduce manufacturing errors. This paper successfully implements a face-hobbing process for manufacturing SBGs on a modern six-axis CNC bevel gear cutting machine. 相似文献
15.
讨论了上下料机械手的原理设计、模型分析与理论计算,运用Inventor4.0软件设计了自动上下料机械手。 相似文献
16.
利用有限元分析软件ANSYS,对一台数控螺旋锥齿轮铣齿机的主轴系统进行静力分析、模态分析和谐响应分析,获得其静态的变形、各阶固有频率、振型及其特定工况下的位移频率响应曲线.为主轴的动态优化设计提供依据. 相似文献
17.
18.
陈芳 《机械设计与制造工程》2016,(9):91-94
针对传统斜齿锥齿轮成对啮合中不能正确啮合的问题,提出一种基于产形线切齿法的齿轮啮合误差修正方法.结合球面渐开线原理和渐开线齿面方程,利用基锥螺旋角计算节锥螺旋角的方式,对齿面方程的几何参数进行确定;利用求出的几何参数,对凹齿面切齿运动进行分析,推导出产形线方程;最后通过切齿实验对上述推导方程进行验证,取得良好效果,从而验证了该修正方法的可行性. 相似文献
19.
20.
本文分析了弧齿锥齿轮的加工原理、机床所需要的运动、设计了机床的传动原理图,采用三轴数控系统来控制,将机械传动与数控系统控制的优点结合起来,避免了完全靠机械传动而造成的机床结构复杂、调整参数多、维修维护困难的问题;同时避免了完全靠数控系统驱动所带来的数控轴数多、编制程序困难等问题。 相似文献