Based on the machining principle of end milling helical flute, the grinding contact area in flute grinding is determined by the grinding wheel position. The equivalent diameters and speeds of the wheel and workpiece in flute grinding are analyzed in the contact area. There exist characteristics of cylindrical grinding and internal grinding in helical flute grinding. Then, considering the effect of plastic upheaval deformation of cemented carbide and tilt angle between wheel speed and workpiece speed on surface roughness, the theoretical model of the surface roughness of helical is established. The effects of grinding wheel diameter, grinding wheel speed and workpiece feed rate on the surface roughness are analyzed. The helical flute grinding test is carried out on a five-axis CNC tool grinder using a standard 1A1 diamond grinding wheel. The surface morphology is investigated by using digital microscope. The surface roughness is measured by white light interferometer. Finally, the validity of the proposed model is verified through grinding experiments. This model provides a theoretical reference for the grinding surface roughness calculation of other shank-type tool helical flute.
SONG Tiejun
,
ZHOU Zhixiong
,
LI Wei
,
HUANG Xiangming
,
CHEN Qidi
. Roughness Model for Helical Flute of Cemented Carbide End Mill under Grinding[J]. Journal of Mechanical Engineering, 2017
, 53(17)
: 185
-192
.
DOI: 10.3901/JME.2017.17.185
[1] KARPUSCHEWSKI B, JANDECKA K, MOUREK D. Automatic search for wheel position in flute grinding of cutting tools[J]. CIRP Annals-Manufacturing Technology, 2011, 60(1):347-350.
[2] 曾滔,周志雄,汤爱民,等. 碟形砂轮加工刀具螺旋槽的磨削参数研究[J]. 中国机械工程, 2015, 26(5):575-580. ZENG Tao, ZHOU Zhixiong, TANG Aimin, et al. Research on grinding parameters in machining helical groove of cutting tools with a dishing wheel[J]. China Mechanical Engineering, 2015, 26(5):575-580.
[3] 李国超, 孙杰. 整体式立铣刀刃磨仿真技术研究现状与发展趋势[J]. 机械工程学报, 2015, 51(9):165-175. LI Guochao, SUN Jie. Current research and development trends of end mill grinding simulation technology[J]. Journal of Mechanical Engineering, 2015, 51(9):165-175.
[4] LIN W S, WANG Y C, HSIAO W C, et al. Grinding performance analysis of diamond wheel for groove grinding[C]//Control and Automation (ICCA), 20108th IEEE International Conference on. IEEE, 2010:608-613.
[5] UHLMANN E, HÜBERT C. Tool grinding of end mill cutting tools made from high performance ceramics and cemented carbides[J]. CIRP Annals-Manufacturing Technology, 2011, 60(1):359-362.
[6] 宋铁军,周志雄,李伟,等. 硬质合金刀具螺旋槽缓进给磨削力研究[J]. 中国机械工程, 2014, 25(9):1153-1157. SONG Tiejun, ZHOU Zhixiong, LI Wei, et al. Research on grinding forces of creep feed grinding cemented carbide tool helical grooves[J]. China Mechanical Engineering, 2014, 25(9):1153-1157.
[7] WANG Y Z, CHEN Y Y, ZHOU G M, et al. Roughness model for tooth surfaces of spiral bevel gears under grinding[J]. Mechanism and Machine Theory, 2016, 104(3):17-30.
[8] MALKIN S, GUO Changsheng. Grinding technologytheory and applications of machining with abrasives[J]. Journal of Manufacturing Processes,2000,2(3):151-157.
[9] 丁国龙,张颂,赵大兴,等. 基于诱导法曲率的齿轮成形磨削干涉分析[J]. 机械工程学报, 2016, 52(3):197-204. DING Guolong, ZHANG Song, ZHAO Daxing, et al. Interference study of gear form grinding based on induced normal curvature[J]. Journal of Mechanical Engineering, 2016, 52(3):197-204.
[10] 修世超, 蔡光起. 快速点磨削周边磨削层模型及参数[J]. 机械工程学报, 2006, 42(11):197-201. XIU Shichao, CAI Guangqi. Edge grinding layer model and parameters in quick-point grinding[J]. Chinese Journal of Mechanical Engineering, 2006, 42(11):197-201.
[11] ZHANG B. Helical scan grinding of brittle and ductile materials[J]. Journal of Materials Processing Technology, 1999, 91(1):196-205.
[12] UHLMANN E, KLEIN T B, KOPROWSKI S. Tilt angle effects in surface grinding with mounted points[J]. Production Engineering, 2014, 8(4):431-442.
[13] ZHANG B, UEMATSU T. Surface generation mechanism in helical scan grinding:An analytical study[J]. Journal of Materials Processing Technology, 1999, 91(1):206-214.
[14] LI K, LIAO W. Modeling of ceramic grinding processes Part I. Number of cutting points and grinding forces per grit[J]. Journal of Materials Processing Technology, 1997, 65(1):1-10.
