Exploring Key Belt Grinding and Chamfering Technology of Pump Gear Face
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摘要: 为了实现齿轮端面及其棱边的高效一次加工，结合新型开式砂带磨削的方案和特点，设计了一种适用于齿轮端面的砂带磨削装置。该系统既有砂带磨削的柔性和适应性广的特点，又能通过磨削参数的调节实现端面棱边微小倒棱尺寸的精确控制。磨削系统采用了接触轮的往复振动方式，能够改善砂带表面磨料等高性。最后通过磨削试验探索得到最佳表面质量和倒棱尺寸的磨削参数，表面粗糙度能够维持在0.05 μm以下，棱边不同位置微小倒棱尺寸能够满足给定的尺寸范围，也验证了该系统进行高精度磨削的有效性和稳定性。Abstract: To achieve high efficiency machining of gear face and tiny chamfer, an abrasive belt grinding device suitable for the gear face was developed and combined with the new open-type abrasive belt grinding scheme and characteristics. The grinding device is flexible and adaptable for grinding abrasive belt and can be accurately control the tiny chamfering dimensions of the end edge through adjusting grinding parameters. The grinding device adopts the reciprocal oscillation mode of a contact wheel to improve the consistence of abrasive wear height. Experimental results prove that the grinding device is feasible and stable for precision grinding. The grinding parameters were optimized to obtain the best gear face quality and chamfer size; the gear face roughness is kept below 0.05 μm, and the small size of the chamfer meets the given size range requirements in different edge positions.
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Key words:
- gear face /
- new open-type /
- abrasive belt grinding /
- tiny chamfer
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表 3 试验参数
参数名称 数值 正反转时间/s 8、10 齿轮轴转速/(r·min-1) 800、1 000 砂带张紧力/N 40、50 X方向进给量/mm 0.5、1.0、1.5、2.0 顶尖压力/MPa 0.4~0.6 卷带速度/(mm·s-1) 0.5、1.0 接触轮往复摆动/(次·s-1) 10 
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表 4 部分齿轮轴倒棱磨削后测量结果
位置 轮廓尺寸/mm 1# 2# 3# 4# A-B 端面长边 0.464 0.473 0.476 0.486 齿廓短边 0.025 0.024 0.030 0.024 C-D 端面长边 0.429 0.406 0.452 0.427 齿廓短边 0.020 0.018 0.020 0.032 E-F 端面长边 0.368 0.3780 0.367 0.384 齿廓短边 0.019 0.021 0.020 0.024
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表 5 正交试验结果与计算分析表
试验号 A B C D 表面粗糙度/Ra 倒棱直角边/mm X方向进给量/mm 正反转时间/s 齿轮轴转速/(r·min-1) 砂带张紧力/N 1 1(2.0) 1(8) 1(800) 1(40) 0.081 5 0.62 2 1(2.0) 2(10) 2(1 000) 2(50) 0.051 9 0.72 3 2(1.5) 1(8) 1(800) 2(50) 0.055 4 0.44 4 2(1.5) 2(10) 2(1 000) 1(40) 0.075 9 0.53 5 3(1.0) 1(8) 2(1 000) 1(40) 0.077 9 0.40 6 3(1.0) 2(10) 1(800) 2(50) 0.048 1 0.42 7 4(0.5) 1(8) 2(1 000) 2(50) 0.044 1 0.34 8 4(0.5) 2(10) 1(800) 1(40) 0.075 0 0.31 K1 0.133 4 0.258 9 0.260 0 0.310 3 K2 0.131 3 0.250 9 0.249 8 0.199 5 K3 0.126 0 K4 0.119 1 表面粗糙度 k1 0.066 7 0.064 7 0.065 0 0.077 6 k2 0.065 6 0.062 7 0.062 5 0.049 9 k3 0.063 0 k4 0.059 6 R 0.007 1 0.002 0 0.002 5 0.027 7 K1 1.34 1.8 1.79 1.86 K2 0.97 1.98 1.99 1.92 K3 0.82 K4 0.65 端面长边 k1 0.67 0.45 0.448 0.465 k2 0.485 0.495 0.496 0.48 k3 0.410 k4 0.325 R 0.345 0.045 0.048 0.015
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