Influence of Wheel Position Parameters on Flute Profile of Micro-Drill

Abstract:

Drill flute has a great influence on the drilling performance of micro-drill, and its profile largely depends on the grinding parameters, wheel profile and position. It is promising to obtain a desired flute profile with a standard wheel by adjusting the wheel position parameters. To investigate the influence of wheel position parameters on the flute profile, the micro-drill flute is simulated by MATLAB software considering the wheel installation angle and the offset distance from wheel origin to the drill blank origin, and the radial rake angle, flute width and chip evacuation capacity are quantitatively calculated to evaluate the flute profile. The simulated results show that the wheel installation angle has an obvious effect on the three performance parameters of flute profile, and the wheel offset distance only influences a parameter, i.e., the flute width evidently. The radial rake angle of drill flute increases obviously with the increased wheel installation angle, and decreases slightly with the increased wheel offset distance. With the decreased wheel installation angle, the flute width of drill flute increases causing the reduction of micro-drill strength but improvement of the chip evacuation capacity. With the increased wheel offset distance, the flute width also increases resulting in the reduction of micro-drill strength but no obvious change on chip evacuation capacity. Thus the wheel installation angle can be used as a main factor among the wheel position parameters to obtain the desired flute profile.

• Periodical: Materials Science Forum (Volume 874)
• Pages: 52-58
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.874.52
• Online since: October 2016
• Authors: Su Yan Zhang, Zhi Qiang Liang*, Xi Bin Wang, Tian Feng Zhou, Li Jiao, Pei Yan
• Keywords: Flute Profile, Micro-Drill, Performance Parameters, Wheel Position Parameters

References

[1] K.F. Ehmann, M.F. DeVries, Grinding wheel profile definition for the manufacture of drill flutes, CIRP Annals-Manufacturing Technology 39 (1990) 153-156.

DOI: 10.1016/s0007-8506(07)61024-5

[2] D. Kang, E.J.A. Armarego, Computer-aided geometrical analysis of the fluting operation for twist drill design and production. II. Backward analysis, wheel profile, and simulation studies, Machining Science and Technology 7 (2003) 249-266.

DOI: 10.1081/mst-120022780

[3] B.Y. Ren, Y.Y. Tang, C.K. Chen, The general geometrical models of the design and 2-axis NC machining of a helical end-mill with constant pitch, Journal of materials Processing Technology 115 (2001) 265-270.

DOI: 10.1016/s0924-0136(01)00825-1

[4] W.Y. Chen, P.C. Chang, S.D. Liaw, et al. A study of design and manufacturing models for circular-arc ball-end milling cutters, Journal of Materials Processing Technology 161 (2005) 467-477.

DOI: 10.1016/j.jmatprotec.2004.07.086

[5] T.T. Pham, S.L. Ko, A manufacturing model of an end mill using a five-axis CNC grinding machine, The International Journal of Advanced Manufacturing Technology 48 (2010) 461-472.

DOI: 10.1007/s00170-009-2318-y

[6] W. Zhang, X.F. Wang, F.B. He, et al. A practical method of modelling and simulation for drill fluting, International Journal of Machine Tools and Manufacture 46 (2006) 667-672.

DOI: 10.1016/j.ijmachtools.2005.07.007

[7] L.D. Beju, D.P. Brîndaşu, N.C. Muţiu, et al. Modeling, simulation and manufacturing of drill flutes, The International Journal of Advanced Manufacturing Technology 83 (2015) 1-17.

DOI: 10.1007/s00170-015-7710-1

[8] S.L. Xiao, L.M. Wang, Z.C. Chen, et al. A New and Accurate Mathematical Model for Computer Numerically Controlled Programming of 4Y1 Wheels in 2½-Axis Flute Grinding of Cylindrical End-Mills, Journal of Manufacturing Science and Engineering 135 (2013).

DOI: 10.1115/1.4023379

[9] B. Karpuschewski, K. Jandecka, D. Mourek, Automatic search for wheel position in flute grinding of cutting tools. CIRP Annals-Manufacturing Technology 60 (2011) 347-50.

DOI: 10.1016/j.cirp.2011.03.113

[10] F. Tang, J. Bai, X. Wang, Practical and reliable carbide drill grinding methods basedon a five-axis CNC grinder, The International Journal of Advanced Manufacturing Technology 73 (2014) 659-667.

DOI: 10.1007/s00170-014-5781-z

[11] L. Ren, S.L. Wang, L.L. Yi, et al. An accurate method for five-axis flute grinding in cylindrical end-mills using standard 1V1/1A1 grinding wheels, Precision Engineering 43 (2016) 387-394.

DOI: 10.1016/j.precisioneng.2015.09.002

[12] E. Abele, M. Fujara, Simulation-based twist drill design and geometry optimization, CIRP Annals-Manufacturing Technology 59 (2010) 145-150.

DOI: 10.1016/j.cirp.2010.03.063