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Journal of Tsinghua University(Science and Technology)    2020, Vol. 60 Issue (12) : 1016-1022     DOI: 10.16511/j.cnki.qhdxxb.2020.22.016
Mechanical Engineering |
Lightweight slider design for a servo press based on its layered structure
Fazhong PENG1,Chuanying WANG2,Henghui CHAI2,Zhufeng SHAO1,*(),Shuaiqi WANG1,Bowen WANG1
1. Beijing Key Laboratory of Precision/Ultra-Precision Manufacturing Equipment and Control, State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
2. Jier Machine-Tool Group Co., Ltd., Jinan 250022, China
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Abstract  

The slider is an important component of a servo press and its mass directly affects the punching accuracy and manufacturing cost. Some servo presses have bad slider structures and the sliders are too heavy. This paper presents a lightweight slider design method based on its layered structure using different optimizations. A load analysis model is developed to determine the boundary conditions for an ANSYS optimization analysis. Then, the connection and support of the upper part of the slider are analyzed using topology optimization to remove the maximum amount of material. The design parameters for the lower part of the slider are then optimized to optimize the separator thickness and layout. Finally, ANSYS is used to verify the overall optimized design. Thus, the slider mass is reduced while still ensuring sufficient rigidity of the slider. The method given in this paper provides an effective design method for lightweight mechanical products.

Keywords servo press      slider      lightweight      topology optimization      parameter optimization     
Corresponding Authors: Zhufeng SHAO     E-mail: shaozf@tsinghua.edu.cn
Issue Date: 14 October 2020
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Fazhong PENG
Chuanying WANG
Henghui CHAI
Zhufeng SHAO
Shuaiqi WANG
Bowen WANG
Cite this article:   
Fazhong PENG,Chuanying WANG,Henghui CHAI, et al. Lightweight slider design for a servo press based on its layered structure[J]. Journal of Tsinghua University(Science and Technology), 2020, 60(12): 1016-1022.
URL:  
http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2020.22.016     OR     http://jst.tsinghuajournals.com/EN/Y2020/V60/I12/1016
  
  
  
  
  
  
  
  
  
10.16511/j.cnki.qhdxxb.2020.22.016.T001

拓扑优化前后最大变形和最大应力

位置 最大变形/mm 载荷 最大应力/MPa
优化前 优化后 优化前 优化后
底板 0.413 0 0.414 0 均布载荷 130.61 133.77
x向滑轨 1.253 6 1.327 4 x向偏载 141.75 142.18
z向滑轨 0.510 3 0.864 2 z向偏载 91.11 95.37
  
  
  
  
10.16511/j.cnki.qhdxxb.2020.22.016.T002

各参数初始值及设计变化变化范围

编号 参数 初始值/mm 范围/mm 优化值/mm
1 h1 60 40~60 60
2 h2 50 30~50 34
3 h3 50 30~50 34
4 h4 80 50~80 60
5 h5 80 50~80 50
6 h6 160 120~160 130
7 L1 450 350~550 350
8 L2 490 400~590 480
9 L3 408 300~500 450
  
10.16511/j.cnki.qhdxxb.2020.22.016.T003

滑块分界层以下部分优化结果

变形/mm 最大应力/MPa 质量/kg 质量减少百分比/%
原模型 0.380 47 64.75 34 167×2 4.56
优化后 0.378 56 69.60 32 608×2
  
  
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