• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (3): 227-232.doi: 10.3901/JME.2018.03.227

• 制造工艺与装备 • 上一篇    

20CrMnTi钢齿面磨削力模型构建与分析

田欣利, 王龙, 刘谦, 唐修检, 杨理钧, 杨绪啟   

  1. 陆军装甲兵学院装备再制造技术国防科技重点实验室 北京 100072
  • 收稿日期:2017-01-24 修回日期:2017-06-19 出版日期:2018-02-05 发布日期:2018-02-05
  • 通讯作者: 王龙(通信作者),男,1989年出生,博士研究生。主要研究方向为塑性或硬脆材料的高效精密加工技术。E-mail:waloxs@163.com
  • 作者简介:田欣利,男,1956年出生,博士,教授,博士研究生导师。主要研究方向为硬脆材料的高效精密加工技术。E-mail:tianxli719251@126.com
  • 基金资助:
    国家科技重大专项资助项目(2015ZX04003006)。

Construction and Analysis of Grinding Force Model of 20CrMnTi Steel Tooth Surface

TIAN Xinli, WANG Long, LIU Qian, TANG Xiujian, YANG Lijun, YANG Xuqi   

  1. National Defense Key Laboratory for Remanufacturing Technology, Academy of Army Armored Force, Beijing 100072
  • Received:2017-01-24 Revised:2017-06-19 Online:2018-02-05 Published:2018-02-05

摘要: 为了深入研究20CrMnTi钢的磨削力生成机制与规律,基于Lawn压痕模型接触变形区和三角形截面切屑的基础上,构建立了单颗磨粒的磨削力、最大未变形切屑厚度、齿面磨削力的理论数学模型。磨削力主要源于切屑变形和摩擦,且存在磨削尺寸效应。磨削力随着磨削深度、进给速度、材料硬度和磨粒顶锥角等因素的增大而增大,然而却随着磨削速度与砂轮直径等因素的增大而减小。在砂轮磨损过程中,砂轮特性参数改变对磨削力产生较大影响。结合理论模型分析,开展了齿面局部磨削试验研究,详细分析了不同α常数情况下磨削力随磨削用量变化拟合曲线的残差和拟合优度F值。

关键词: 20CrMnTi钢, 齿面, 磨削机理, 磨削力

Abstract: To further study the mechanism and rule of grinding force of 20CrMnTi steel, theoretical and mathematical model of the grinding force of single grits, maximum undeformed chip thickness, and the grinding force of tooth surface is established, which is on the basis of contact deformation zone based on Lawn indentation model and triangular cross section chip. Grinding force mainly comes from the chip deformation and friction, and the effect of grinding size exists. Grinding force increases with the increase of grinding depth, feed rate, material hardness, and top cone angle of abrasive grains. However, it decreases with the increase of grinding speed and grinding wheel diameter. In the wear process of grinding wheel, the change of grinding wheel characteristic parameters has a great influence on the grinding force. Based on the theoretical model analysis, the local grinding test of tooth surface is carried out. It also gives a detailed analysis on the residuals and F measure of the fitting curve to grinding force with variable under the different constant α situations.

Key words: 20CrMnTi steel, grinding force, grinding mechanism, tooth surface

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