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金刚石砂轮轴向进给磨削硬质合金时的磨削力实验研究

任小柯 黄辉 苏珍发

任小柯, 黄辉, 苏珍发. 金刚石砂轮轴向进给磨削硬质合金时的磨削力实验研究[J]. 金刚石与磨料磨具工程, 2022, 42(5): 567-577. doi: 10.13394/j.cnki.jgszz.2022.0040
引用本文: 任小柯, 黄辉, 苏珍发. 金刚石砂轮轴向进给磨削硬质合金时的磨削力实验研究[J]. 金刚石与磨料磨具工程, 2022, 42(5): 567-577. doi: 10.13394/j.cnki.jgszz.2022.0040
REN Xiaoke, HUANG Hui, SU Zhenfa. Experimental study on grinding force in axial feed grinding of cemented carbide with diamond grinding wheel[J]. Diamond & Abrasives Engineering, 2022, 42(5): 567-577. doi: 10.13394/j.cnki.jgszz.2022.0040
Citation: REN Xiaoke, HUANG Hui, SU Zhenfa. Experimental study on grinding force in axial feed grinding of cemented carbide with diamond grinding wheel[J]. Diamond & Abrasives Engineering, 2022, 42(5): 567-577. doi: 10.13394/j.cnki.jgszz.2022.0040

金刚石砂轮轴向进给磨削硬质合金时的磨削力实验研究

doi: 10.13394/j.cnki.jgszz.2022.0040
详细信息
    作者简介:

    任小柯,男,1992年,硕士研究生,研究方向:智能制造与精密加工。E-mail:634409780@qq.com

    通讯作者:

    黄辉,男,1974年,博士,教授,博士生导师,研究领域:脆性材料高效、精密、智能加工,超硬材料工具制备与应用,E-mail:huangh@hqu.edu.cn

  • 中图分类号: TG58;TG74;TH142;TQ164

Experimental study on grinding force in axial feed grinding of cemented carbide with diamond grinding wheel

  • 摘要: 为研究金刚石砂轮轴向进给磨削硬质合金时的磨削力,建立轴向力与法向力、切向力的转化模型;测量不同工艺参数下的磨削力变化;分析工艺参数对法向力、切向力、轴向力的影响规律并建立磨削力的经验公式。结果表明:在轴向进给磨削过程中,最大的磨削力是法向力,而轴向力略小于切向力。砂轮线速度对3个方向的磨削力的影响大致相同。磨削深度对法向、切向及轴向3个方向的磨削力的影响明显不同。进给速度对3个方向磨削力的影响不显著。

     

  • 图  1  外圆纵向磨削示意图

    Figure  1.  Cylindrical traverse grinding

    图  2  磨削实验系统示意图

    Figure  2.  Schematic diagram of grinding experimental system

    图  3  硬质合金试件

    Figure  3.  Cemented carbide specimen

    图  4  磨削力测量采集系统实物图

    Figure  4.  Grinding force measurement system

    图  5  磨削弧区受力分析

    Figure  5.  Stress analysis of grinding arc area

    图  6  磨削力原始信号

    Figure  6.  Original signal of grinding force

    ($ {v}_{\mathrm{s}} $=25.13 m/s,$ {v}_{\mathrm{f}} $=55 mm/min,$ {a}_{\mathrm{p}} $=0.30 mm)

    图  7  磨削力滤波信号

    Figure  7.  Filtered signal of grinding force

    ($ {v}_{\mathrm{s}} $=25.13 m/s,$ {v}_{\mathrm{f}} $=55 mm/min,$ {a}_{\mathrm{p}} $=0.3 mm)

    图  8  砂轮线速度对法向力的影响

    Figure  8.  Effect of grinding wheel linear speed on normal force

    图  9  砂轮线速度对切向力的影响

    Figure  9.  Effect of grinding wheel linear speed on tangential force

    图  10  砂轮线速度对轴向力的影响

    Figure  10.  Effect of grinding wheel linear speed on axial force

    图  11  磨削深度对法向力的影响

    Figure  11.  Effect of grinding depth on normal force

    图  12  磨削深度对切向力的影响

    Figure  12.  Effect of grinding depth on tangential force

    图  13  磨削深度对轴向力的影响

    Figure  13.  Effect of grinding depth on axial force

    图  14  进给速度对法向力的影响

    Figure  14.  Effect of feed speed on normal force

    图  15  进给速度对切向力的影响

    Figure  15.  Effect of feed speed on tangential force

    图  16  进给速度对轴向力的影响

    Figure  16.  Effect of feed speed on axial force

    表  1  GU20机械物理性能

    Table  1.   Mechanical and physical properties of GU20

    主要参数取值
    WC晶粒度 d50 / μm0.7
    密度 ρ / (g·mm−3)14.5
    弹性模量 E / GPa525
    硬度 91.9 HRA
    抗弯强度 σ / MPa3800
    比热 c / (J·kg−1·K−1)950
    导热率 K / (W·m−1·K−1)110
    热膨胀系数 λ / (K−1)5×10−6
    下载: 导出CSV

    表  2  硬质合金磨削工艺参数表

    Table  2.   Cemented carbide grinding process parameters

    工艺参数取值
    砂轮线速度 $ {v}_{{\rm{s}}} $ / (m·s−1)25.13,35.60,46.08,56.55
    磨削深度 $ {a}_{{\rm{p}}} $ / mm0.15,0.20,0.25,0.30
    轴向进给速度 $ {v}_{{\rm{f}}} $ / (mm·min−1)40,45,50,55
    下载: 导出CSV

    表  3  磨削深度对磨削力变化幅度的影响

    Table  3.   Effect of grinding depth on variation of grinding forces

    磨削深度
    $ {a}_{\mathrm{p}} $ / mm
    法向力降幅
    ΔFn / N
    切向力降幅
    ΔFt / N
    轴向力降幅
    ΔFa / N
    0.15106.3054.324.89
    0.20143.6767.6111.11
    0.25143.6768.4313.84
    0.30147.7668.6620.09
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-04-09
  • 修回日期:  2022-05-24
  • 录用日期:  2022-06-10
  • 网络出版日期:  2022-06-10
  • 刊出日期:  2022-10-10

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