Adaptive Machine Settings Driven Grinding Accuracy Control Method for Non-orthogonal Aerospace Spiral Bevel Gears
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摘要: 非正交航空弧齿锥齿轮由于其高速重载服役特性,齿面磨削精度要求高,很难实现实际齿面与理论齿面的匹配。为了满足高效率高精度要求,本文提出了一种齿面精度自适应加工参数驱动控制方法。首先,基于先进的全工序法磨削仿真,进行加工参数驱动的齿面精确数学建模。然后,以磨削精度为控制目标,建立齿面误差测量、齿面设计,齿面误差反调集成的加工精度自适应控制模型。最后,通过齿面误差敏感性分析策略和改进Levenberg-Marquardt算法,实现预设目标齿面的自适应逼近,求解最终精确机床加工参数。本文提供的算例证明了该方法有效性。
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关键词:
- 非正交航空弧齿锥齿轮 /
- 全工序法磨削 /
- 加工参数 /
- 自适应控制 /
- Levenberg-Marquardt算法
Abstract: In consideration of high speed and heavy load operation characteristics of non-orthogonal aerospace spiral bevel gears and high tooth flank grinding accuracy, it is very difficult to achieve the matching of the actual tooth surface and the theoretical tooth surface. For satisfying the high accuracy and efficiency, an adaptive machine settings driven tooth flank accuracy control is proposed. Firstly, with simulation of advanced free-form grinding, machine settings driven tooth flank mathematical modeling is performed. Then, for tooth flank grinding accuracy control, adaptive grinding accuracy control model is established by correlating with the tooth flank form error measurement, tooth flank design and tooth flank form error modification. Finally, with applications of tooth flank form error sensitivity analysis strategy and the improved Levenberg-Marquardt algorithm, the adaptive approximation of the preset target tooth surface is achieved, and the final precise machine tool machining parameters are solved. Given numerical instance in this work can verify the validation of the proposed method. -
表 1 31/38齿坯参数
参数 小轮 大轮 齿数 31 38 面宽/mm 32.00 32.00 压力角/(°) 20 20 轴交角/(°) 52 52 齿顶/mm 5.90 3.44 齿根高/mm 4.65 6.3 外锥距/mm 208.81 208.81 节锥角/(°) 23.16667 28.833333 面锥角/(°) 24.26667 29.600000 根锥角/(°) 22.4 27.73333 旋向 RH LH 表 2 31/38加工参数
参数名 小轮 大轮 刀盘直径D/mm 305.0400 304.80 刀顶距Pw/mm 2.1819 1.9050 外侧压力角AgO/mm 22.20 22.50 内侧压力角AgI/mm 22.60 22.50 外侧圆角半径RwI/mm 0.9800 1.0400 内侧圆角半径RwO/mm 1.0000 1.0400 外侧修形半径ρO/mm 260.0000 304.80 内侧修形半径ρI/mm 400.0000 1.9050 径向刀位Sr/mm 163.3098 163.52611 角向刀位q/(°) 50.4968 49.8142 刀倾角σ /(°) 3.44 0.5985 刀转角ξ/(°) 2.5969 14.88 垂直轮位EM/mm 0.12558 0.0000 安装角γm/(°) 20.13 23.73 水平轮位XB/mm 0.43873 0.00000 床位XD/mm −3.1264 −3.86914 滚比m 2.5258999 2.075437 螺旋修正系数Heli 6.68482 0.00000 表 3 非正交航空弧齿锥齿轮反调结果
参数 小轮 大轮 径向刀 161.3222 161.653 角向刀位q/(°) 50.50201 49.8051 刀倾角σ/(°) 3.440614 0.6173 刀转角ξ/(°) 2.596959 14.88 垂直轮位EM/mm 0.05488 0.0512 安装角γm/(°) 20.1016 23.754 水平轮位XB/mm 0.438954 −1.3304 床位XD/mm −3.1439 −7.07774 滚比m 2.512648 2.080307 螺旋修正系数Heli 6.684794 0.00000 -
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