Influence of Chip Thickness Models on Deflection Aspects of an End Mill Cutter and a Spindle Bracket of a Miniaturized Machine Tool
The forces generated during micro milling are relatively small (<10 N) due to the limited size and strength of the tool edge. Force model can be combined with tool stiffness to estimate the deflection of the tool as a function of depth of cut, the up-feed per revolution and the geometry of the part. In view of the importance attributed to the tool deflection in achieving the high-quality surface of a micro component, in the present study an attempt is made to utilize the different chip thickness models in characterizing the micro end milling operations from the viewpoint of static deflection of a cutter and spindle bracket of a miniaturized machine tool (MMT) by including cutter stiffness in force model. The variation of cutting force and the consequent tool deflection as a function of tooth position angle are illustrated graphically.
KeywordsChip thickness models Tool deflection Spindle bracket
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