特殊齿形齿轮普通滚刀的CNC柔性创成

双向联动变位理论使得在ＣＮＣ滚齿机上,基于标准渐开线齿轮滚刀,由ＣＮＣ系统柔性控制刀具和工件间的创成运动实现特殊齿形的加工,无需耗费巨资制造各种专门的滚刀。新理论的提出对于实现齿轮不同工况下的最佳修形和追求齿轮传动的“在线”最优化必将具有深远意义。     

变位内齿轮齿形系数的研究

对变位内齿轮齿根危险截面上的弯矩及其齿厚进行了分析和计算，给出了内齿轮变位系数及齿数与其齿形系数的关系线图。研究结果表明：ＧＢ３４８０－８３中将内齿轮齿形系数视为常量的作法值得商榷     

用标准滚刀加工大变位齿轮的研究

本文重点分析用标准滚刀在滚齿机上加工大变位齿轮产生齿形误差的原因,并提出解决措施。     

重载齿轮的齿形角和变位系数

管磨机，烘干机等机构的主传动齿轮的重要工况特点是很速，重载、恒速且长期满载，连续运转。本文讨论了高承载能力的渐开线直齿圆柱齿轮的齿形角，变位系数和齿顶高系数等问题。     

大变位齿轮的滚切加工

通过分析展成法加工大变位齿轮过程中的运动关系和成形原理,指出了用标准滚刀滚切大变位齿轮的不足之处,提出了非标滚刀的设计原理与方法,开辟了提高大变位齿轮滚切加工精度的新途径。     

滚切正多边形工件的滚刀齿形设计

介绍了滚切任意齿形工件的滚刀通用设计方法,据此推导出滚切正多边形工件用滚刀的齿形计算公式,并给出了设计实例。     

齿轮磨前滚刀的齿形研究

本文介绍了磨前滚刀滚切齿轮的最大根切量和磨后的渐开线长度计算,并建立了数学模型。为更加直观起见,还建立了模拟滚齿的数学模型。并在实验的基础上提出了参考标准。     

切顶齿轮滚刀的基准齿形

论述了切顶齿轮滚刀基准齿形的确定原则,分析了切顶齿轮滚刀齿根圆弧刀刃的展成齿形——切顶齿轮齿角过渡曲线的特征,提出了合理选择滚刀齿根圆弧半径的依据。     

CNC FLEXIBLE GENERATING SPECIFIC GEAR TOOTH PROFILE BASED ON STANDARD INVOLUTE GEAR HOB

A new method named orthogonal two-way link-shift here has been proposed. Based on the method and a standard involute gear hob, a specific gear tooth profile (including an arbitrary gear tooth profile and a modified involute gear tooth profile) can be generated on a CNC(computer numerical control) hobbing machine. Computer simulation has been carried out, and the results prove that the method is right and practicable. So, the fabrication costs can be greatly decreased than before. The new method has momentous significance to realize gear's optimized modification under different work condition!:     

齿轮修形的优化设计与试验研究

通过对齿轮传动动态性能进行仿真研究,以一对直齿圆柱齿轮传动为例,研究了直线修形、抛物线修形和正弦修形,并优化设计了该齿轮传动取优动态性能时的齿廓修形曲线。通过比较修形齿轮和标准渐开线齿轮实测的振动加速度和噪声,证明了本优化修形设计方法对提高齿轮传动动态性能的突出效用。     

EFFECT OF INVOLUTE CONTACT RATIO ON THE DYNAMIC PERFORMANCE OF SPUR GEAR WITH NOTOOTH PROFILE MODIFICATION

The effect of involute contact ratio on the torsional vibration behavior of spur gear-pair isstudied analytically through a mass-spring model. The tooth stiffness in model not only has a relationwith time, as many prior studies presented, but, more important, with involute contact ratio (ICR) aswell. The ICR embodies its impact on the spur gear's dynamic performance through changing theproportion of tooth stiffness when there are n+1 teeth in contact to tooth stiffness when there are n