Grinding force and specific grinding energy of high speed grinding of 9CrWMn cold work die steel

WANG Yan; XU Jiu-hua; YANG Lu

doi:10.3788/OPE.20152307.2031

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Grinding force and specific grinding energy of high speed grinding of 9CrWMn cold work die steel

更新时间：2020-08-12

- Grinding force and specific grinding energy of high speed grinding of 9CrWMn cold work die steel
- Optics and Precision Engineering Vol. 23, Issue 7, Pages: 2031-2042(2015)
- 作者机构：
  
  1. 上海理工大学机械工程学院上海,200093
  2. 南京航空航天大学机电工程学院,江苏南京,210016
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20152307.2031
  CLC： TG580.1+1
- Received：05 November 2014，
  
  Revised：30 December 2014，
  
  Published：25 July 2015
- 稿件说明：
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王艳, 徐九华, 杨路. 高速精密磨削9CrWMn冷作模具钢的磨削力和比磨削能[J]. 光学精密工程, 2015,23(7): 2031-2042

WANG Yan, XU Jiu-hua, YANG Lu. Grinding force and specific grinding energy of high speed grinding of 9CrWMn cold work die steel[J]. Editorial Office of Optics and Precision Engineering, 2015,23(7): 2031-2042
王艳, 徐九华, 杨路. 高速精密磨削9CrWMn冷作模具钢的磨削力和比磨削能[J]. 光学精密工程, 2015,23(7): 2031-2042 DOI： 10.3788/OPE.20152307.2031.

WANG Yan, XU Jiu-hua, YANG Lu. Grinding force and specific grinding energy of high speed grinding of 9CrWMn cold work die steel[J]. Editorial Office of Optics and Precision Engineering, 2015,23(7): 2031-2042 DOI： 10.3788/OPE.20152307.2031.

摘要

分析了高速精密磨削9CrWMn冷作模具钢的机理

采用DEFORM软件对高速磨削模具钢9CrWMn过程进行了磨削力仿真。使用高精密高速平面磨床对模具钢9CrWMn进行了高速精密磨削试验

并在线测量了多种工况下的磨削力。结果表明:在其他两组工艺参数不变时

随着工件进给速度增加

磨削力特别是法向磨削力会增大近45%;法向磨削力和切向磨削力随着砂轮的线速度上升而下降

法向磨削力下降近33%;磨削深度对磨削力影响较大

大的磨削深度对法向磨削力的影响尤其显著

可使法向磨削力增大近100%。分析了磨削工艺参数对比磨削能的影响规律

结果显示:随着磨削深度和工件进给速度的增大

比磨削能呈比较明显的下降趋势

符合磨削加工中的尺寸效应;随着砂轮线速度的增大

比磨削能呈上升趋势。最后

对高速磨削前后工件表面的微观形貌进行了对比分析

磨削力试验结果和仿真理论分析相一致。

Abstract

The high speed grinding mechanism for 9CrWMn cold work die steel was analyzed

and DEFORM software was used to simulate the grinding force in high speed grinding processing of 9CrWMn cold work die steel.A series of high speed grinding experiments were conducted on a Computer Numerical Control(CNC) high speed grinding machine (BLOHM PROFIMAT MT-408) to measure grinding forces on line under different working conditions. It demonstrates that as the workpiece feed rate increases

the grinding forces especially the normal force increase nearly 45%. Both normal and tangential forces decrease with going up the wheel velocity and the normal force decreases nearly 33%. The cut depth has a larger effect on the grinding forces

especially the normal grinding force increases nearly 100%.The influence of processing parameters on the specific grinding energy was investigated. It shows that with increasing grinding depth and workpiece feed rate

specific grinding energy decreases obviously

in accordance with the size effect in grinding process.Moreover

with increasing the wheel velocity

the specific grinding energy increases. At last

the microtopographies of a workpiece surface before and after high speed grinding were compared. The experimental results are well consistent with simulation analysis results.

关键词

Keywords

references

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