Experimental investigation on grinding characteristics of optical glass BK7: with special emphasis on the effects of machining parameters

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• 作者：Tianbiao Yu ; Haonan Li ; Wanshan Wang
• 关键词：Grinding ; Optical glass BK7 ; Machined surface morphology ; Subsurface damage ; Grinding force
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：82
• 期：5-8
• 页码：1405-1419
• 全文大小：5,364 KB
• 参考文献：1.Bach H, Neuroth N (1998) The properties of optical glass. Springer, NetherlandsCrossRef
  2.Lawn BR, Fuller ER (1975) Equilibrium penny-like cracks in indentation fracture. J Mater Sci 10(12):2016–2024CrossRef
  3.Lawn BR, Wilshaw R (1975) Indentation fracture: principles and applications. J Mater Sci 10(6):1049–1081CrossRef
  4.Lawn BR, Swain MV (1975) Microfracture beneath point indentations in brittle solids. J Mater Sci 10(1):113–122CrossRef
  5.Kirchner HP (1984) Comparison of single-point and multipoint grinding damage in glass. J Am Ceram Soc 67(5):347–353CrossRef
  6.Namba Y, Abe M, Kobayashi A (1993) Ultraprecision grinding of optical glasses to produce super-smooth surfaces. CIRP Ann Manuf Technol 42(1):417–420CrossRef
  7.Zhang B, Howes TD (1994) Material-removal mechanisms in grinding ceramics. CIRP Ann Manuf Technol 43(1):305–308CrossRef
  8.Sinhoff V, König W (1998) Generative precision grinding of optical glass. CIRP Ann Manuf Technol 47(1):253–258CrossRef
  9.Bifano TG, Dow T, Scattergood R (1991) Ductile-regime grinding: a new technology for machining brittle materials. J Manuf Sci Eng 113(2):184–189
  10.Fang F, Zhang G (2004) An experimental study of optical glass machining. Int J Adv Manuf Technol 23(3–4):155–160CrossRef
  11.Gu W, Yao Z (2011) Evaluation of surface cracking in micron and sub-micron scale scratch tests for optical glass BK7. J Mech Sci Technol 25(5):1167–1174CrossRef
  12.Gu W, Yao Z, Liang X (2011) Material removal of optical glass BK7 during single and double scratch tests. Wear 270(3):241–246CrossRef
  13.Gu W, Yao Z, Li H (2011) Investigation of grinding modes in horizontal surface grinding of optical glass BK7. J Mater Process Technol 211(10):1629–1636CrossRef
  14.Zhao Q, Zhao L, Guo B, Stephensin D, Corbett J (2012) Deformation analysis of micro/nano indentation and diamond grinding on optical glasses. Chin J Mech Eng 25(3):411–418CrossRef
  15.Yao Z, Gu W, Li K (2012) Relationship between surface roughness and subsurface crack depth during grinding of optical glass BK7. J Mater Process Technol 212(4):969–976CrossRef
  16.Li S, Wang Z, Wu Y (2008) Relationship between subsurface damage and surface roughness of optical materials in grinding and lapping processes. J Mater Process Technol 205(1–3):34–41CrossRef MathSciNet
  17.Lv D, Huang Y, Tang Y, Wang H (2013) Relationship between subsurface damage and surface roughness of glass BK7 in rotary ultrasonic machining and conventional grinding processes. Int J Adv Manuf Technol 67(1–4):613–622CrossRef
  18.Malkin S, Guo C (2008) Grinding technology: theory and application of machining with abrasives. McGraw-Hill, USA
  19.Malkin S, Hwang T (1996) Grinding mechanisms for ceramics. CIRP Ann Manuf Technol 45(2):569–580CrossRef
  20.Cheng J, Gong YD (2013) Experimental study on ductile-regime micro-grinding character of soda-lime glass with diamond tool. Int J Adv Manuf Technol 69(1–4):147–160CrossRef
  21.Werner G (1972) Kinematik und mechanik des schleifprozesses. Doctoral Thesis, Technische Hochschulle Aachen, Germany
  22.Huerta M, Malkin S (1976) Grinding of glass: surface structure and fracture strength. J Manuf Sci Eng 98(2):468–473
  23.Schinker MG (1991) Subsurface damage mechanisms at high-speed ductile machining of optical glasses. Precis Eng 13(3):208–218CrossRef
  24.Lichun L, Jizai F, Peklenik J (1980) A study of grinding force mathematical model. CIRP Ann Manuf Technol 29(1):245–249CrossRef
  
• 作者单位：Tianbiao Yu (1)
  Haonan Li (1)
  Wanshan Wang (1)
  
  1. School of Mechanical Engineering and Automation, Northeastern University, NO. 3-11, Wenhua Road, Heping District, Shenyang, zip code: 110819, People’s Republic of China
  
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015

文摘

As a kind of widely used optical material, optical glass BK7 is machined by first grinding and then polishing in industrial production. However, the polishing process is time-consuming and high-cost. Therefore, it is very meaningful to produce high-quality BK7 workpieces by grinding. To understand the grinding characteristics of BK7, many studies were conducted and reported. But most studies available so far had low industrial relevance and were difficult to be applied to guide real production of BK7 glass. To fill this gap, in this study, BK7 grinding characteristics are investigated and special emphasis is laid on the effects of machining parameters in terms of machined surface morphology, subsurface damage, and grinding force. Results show that wheel depth of cut plays the most important role in BK7 grinding, and a little difference of it leads to completely different material removal modes. Wheel speed is the second important parameter. It cannot change the dominant removal mode but can slightly adjust the characteristics of machined surface, subsurface damage, and grinding force. Workpiece feed rate has a small impact on BK7 grinding. From the viewpoint of industrial application, it suggests that the wheel depth of cut of 1.0 μm, high wheel speed, and high workpiece feed rate are more rational and practical because under this condition the grinding process can produce BK7 workpieces, which possess crack-free surface and sublet subsurface damage, with high removal rates and stable grinding forces. The findings of this paper are expected to be meaningful to provide the experimental references for the studies of the BK7 grinding process and guide industrial production of BK7 optical components.