On prediction of tool life and tool deformation conditions in machining with restricted contact tools

Abstract This paper first reviews the recently developed semi-empirical method for predicting tool life in machining with restricted contact (RC) tools. The method uses Oxley’s machining theory to predict cutting forces, tool-chip contact length and cutting temperatures for the corresponding plane face tool i.e., tool having the same cutting edge geometry but no RC. These predicted parameters and a set of empirical relations are then used to calculate the cutting temperatures and tool life under RC conditions. In this paper additional experimental results are used to verify the above method and validate the predictions. An attempt is then made to use the above method to predict tool deformation under RC conditions. Finally, a comparison between experimental and predicted results and the modifications implemented to improve the predictive method are given.

[1]  Joseph A. Arsecularatne.  On tool-chip interface stress distributions, ploughing force and size effect in machining , 1997 .

[2]  M. C. Shaw,et al.  Mechanics of Machining: An Analytical Approach to Assessing Machinability , 1989 .

[3]  Joseph A. Arsecularatne,et al.  PREDICTION OF TOOL LIFE IN MACHINING WITH RESTRICTED CONTACT TOOLS , 2000 .

[4]  C. A. van Luttervelt,et al.  Recent Developments in Chip Control Research and Applications , 1993 .

[5]  E. M. Trent,et al.  HOT COMPRESSIVE STRENGTH OF CEMENTED CARBIDES , 1968 .

[6]  P.L.B. Oxley,et al.  Prediction of tool life in oblique machining with nose radius tools , 1996 .

[7]  P.L.B. Oxley,et al.  PREDICTION OF CUTTING FORCES IN MACHINING WITH RESTRICTED CONTACT TOOLS , 1997 .

[8]  P. L. B. Oxley,et al.  Predicting Cutting Conditions Giving Plastic Deformation of The Cutting Edge in Terms of Tool and Work Material Properties , 1985 .

[9]  M. Kronenberg,et al.  Machining science and application : theory and practice for operation and development of machining processes , 1966 .

[10]  B. Lindström,et al.  The role of tool-chip contact length in metal cutting , 1993 .

[11]  Paul K. Wright,et al.  Effect of Rake Face Design on Cutting Tool Temperature Distributions , 1980 .

[12]  Bo Lindström,et al.  The effect of restricted contact length on tool performance , 1995 .

[13]  H. Takeyama,et al.  Basic Investigation of Tool Wear , 1963 .

[14]  P.L.B. Oxley,et al.  The Tool Restricted Contact Effect as a Major Influencing Factor in Chip Breaking: An Experimental Analysis , 1988 .

[15]  Joseph A. Arsecularatne,et al.  Prediction of the cutting conditions giving plastic deformation of the tool in oblique machining , 1998 .