0
TECHNICAL PAPERS

Application of Lubrication Theory to Fluid Flow in Grinding: Part II—Influence of Wheel and Workpiece Roughness

[+] Author and Article Information
P. Hryniewicz, A. Z. Szeri

Department of Mechanical Engineering, University of Delaware, Newark, DE 19716-3140

S. Jahanmir

Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8520

J. Tribol 123(1), 101-107 (Sep 26, 2000) (7 pages) doi:10.1115/1.1331278 History: Received February 23, 2000; Revised September 26, 2000
Copyright © 2001 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Schematic showing the grinding geometry and the coordinate system used in formulation of the problem
Grahic Jump Location
Schematic representation of the minimum nominal gap size in the spark-out position hs
Grahic Jump Location
Schematic representation of the wheel crown and the wheel-workpiece configuration
Grahic Jump Location
Wheel crown as determined by surface profile measurement across a plunge-ground silicon nitride specimen
Grahic Jump Location
Centerline pressure p as a function of position x for oil and gap size hg=hs=46 μm (spark-out). Grinding wheel, toil=26.4°C,Qnoz=10 l/min,Vs=10 m/s, 20 m/s, and 30 m/s.
Grahic Jump Location
Maximum pressure pmax as a function of wheel speed Vs for oil, and a range of gap sizes: hg=hs,hs+10 μm,hs+30 μm, and hs+60 μm (where hs=46 μm). Each point is an average of three measurements, and error bars indicate the standard deviation. Grinding wheel, toil=26.4°C,Qnoz=10 l/min.
Grahic Jump Location
Maximum pressure pmax as a function of gap size hg for oil and wheel speeds Vs=10 m/s and 20 m/s. Grinding wheel, toil=26.4°C,Qnoz=10 l/min.
Grahic Jump Location
Predicted ratio of the maximum pressure pmax and the effective flow rate Qef for the grinding wheel to the corresponding values for a smooth wheel, as a function of the dimensionless parameter hg1,2. The vertical line indicates the spark-out position.
Grahic Jump Location
Influence of surface roughness on the developed hydrodynamic pressure for grinding fluid. Experimental results for the grinding wheel at hg=56 μm compared with smooth wheel results at hg=50 μm: (a) centerline pressure p as a function of position x for Vs=20 m/s; (b) maximum pressure pmax as a function of the wheel speed Vs.
Grahic Jump Location
Ratio of the maximum pressure during a grinding pass to the corresponding maximum pressure during a spark-out pass. The ratio determined for consecutive grinding passes in three cases: grinding fluid and depth of cut of a=5 μm, oil and a=5 μm, and oil and a=10 μm.Vs=20 m/s,Qnoz=10 l/min.
Grahic Jump Location
Areal autocorrelation functions of the workpiece and the grinding wheel roughness height: (a) workpiece; (b) grinding wheel. Isolines at the levels of 0.2 and 0.5 are also shown.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In