TY - GEN
T1 - MECHANISTIC MODEL FOR TAPPING PROCESS WITH EMPHASIS ON PROCESS FAULTS AND HOLE GEOMETRY
AU - Dogra, Ajit Pal S.
AU - Kapoor, Shiv G.
AU - Devor, Richard E.
N1 - Publisher Copyright:
© 1999 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 1999
Y1 - 1999
N2 - A mechanistic approach for modeling the tapping process is presented. A methodology for computing chip load is developed for an arbitrary tap geometry. The mechanics of cutting for tapping is analyzed, considering it as an oblique cutting phenomenon. The effects of tap geometry (tap diameter, thread pitch, number of flutes, flute helix angle, tooth rake angle, and thread type), workpiece geometry (hole diameter and hole depth), process parameters (spindle speed and tap penetration depth), and process faults (tap runout, axis misalignment, and drilled hole geometry) are incorporated in the model. The model is calibrated using drilling experiments and is validated by comparing experimental tapping results for Aluminum 319, Aluminum 356, and Gray Cast Iron. In most cases, the tapping forces were predicted within 10% of the experimental values.
AB - A mechanistic approach for modeling the tapping process is presented. A methodology for computing chip load is developed for an arbitrary tap geometry. The mechanics of cutting for tapping is analyzed, considering it as an oblique cutting phenomenon. The effects of tap geometry (tap diameter, thread pitch, number of flutes, flute helix angle, tooth rake angle, and thread type), workpiece geometry (hole diameter and hole depth), process parameters (spindle speed and tap penetration depth), and process faults (tap runout, axis misalignment, and drilled hole geometry) are incorporated in the model. The model is calibrated using drilling experiments and is validated by comparing experimental tapping results for Aluminum 319, Aluminum 356, and Gray Cast Iron. In most cases, the tapping forces were predicted within 10% of the experimental values.
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U2 - 10.1115/IMECE1999-0683
DO - 10.1115/IMECE1999-0683
M3 - Conference contribution
AN - SCOPUS:85122741861
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 271
EP - 283
BT - Manufacturing Science and Engineering
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 1999 International Mechanical Engineering Congress and Exposition, IMECE 1999
Y2 - 14 November 1999 through 19 November 1999
ER -