Investigation of tool geometry effect and penetration strategies on cutting forces during thread milling

Abstract

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Abstract The application of thread milling is increasing in industry because of its inherent advantages over other thread cutting techniques. The objective of this study is to investigate the effect of milling cutter tool geometry on cutting forces during thread milling. The proposed method can compare the performance of milling cutters in spite of the different number of tooth. The best thread milling cutter among the studied tools was determined from the cutting forces point of view. Furthermore, this study also pinpoints the best penetration strategy that provides minimum cutting forces. Lower cutting force variations will lead to fewer vibrations of the tool which in turn will produce accurate part.

Analytical and experimental investigations on thread milling forces in titanium alloy

“…It should be claimed that the previous articles [Araujo et al, 2006, Sharma et al, 2012] described local cutting forces in local cutting edge referential frames(dF t and dF r ) which in not the case of this article. Nevertheless, the resultant force can be predicted by integration of local force models.…”

“…The basics of thread milling processes and tool sequences are described in previous articles [Araujo et al, 2006, Sharma et al, 2012, Araujo et al, 2004, Araujo and Jun, 2009.…”

“…The engagement tool angle in XY plan ( Figure 1b) is called tooth working angle θ tw [Sharma et al, 2012]. This angle is calculated considering the r d oc, constant for a defined thread dimension, and D t witch has limited diameter for internal thread due to the hole dimension:…”

“…In 2012, Sharma et al [Sharma et al, 2012] developed a model adding the vertical feed to the simulation. Another important improvement in the force model concerns on the calibration that takes into account local normal rake angle in the cutting edge is considered [Fromentin and Poulachon, 2010b].…”

Investigation of tool deflection during milling of thread in Cr-Co dental implant

“…(i) Tool penetration: the tool moves in a half revolution penetration strategy (HRPS) [20] from the center O until point A. The radial penetration increases until the desired tool engagement r max p .…”