Cutting Characteristic of Polycarbonate Sheet Subjected to Wedge Indentation by Knife Edge and Grooved Plate

Shigeru Nagasawa; Yuuya Masaki; Masatoshi Fujikura; Yasushi Fukuzawa

doi:10.4028/www.scientific.net/KEM.443.602

Paper Titles

A Vacuum Sucking Approach to Preventing Chips from Attaching to Machined Surface in Cutting of KDP Crystals
p.573

Critical Undeformed Chip Thickness and Cutting Pressure in Relation to Ductile Mode Cutting of KDP Crystal
p.582

Influence of the Workpiece Crystallographic Orientation on Ultra-Precision Turning of KDP Crystals
p.588

Some Aspects of Improving Integrity of Machined Surfaces on Al/SiCp Metal Matrix Composites
p.596

Cutting Characteristic of Polycarbonate Sheet Subjected to Wedge Indentation by Knife Edge and Grooved Plate
p.602

Machining Properties of Insulating ZrO₂ Ceramics Using Porous Copper Electrodes
p.608

Isothermal Rolling of Mg-Based Laminated Composites Made by Explosion Cladding
p.614

Formability of Ti–29Nb–13Ta–4.6Zr Biomaterial at High Temperatures
p.620

Evaluation of Novel Approach on Delamination Factor after Drilling Composite Laminates
p.626

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Cutting Characteristic of Polycarbonate Sheet Subjected to Wedge Indentation by Knife Edge and Grooved Plate

Abstract:

Asymmetric plunge cutting by using grooved knife edge plate was proposed for advanced die cutting of a polycarbonate (PC) sheet. By varying the tip angle U and the tip thickness wU of knife edge in the counter plate, and combining a standard steel cutting rule of 42° center bevel blade, a cutting load response of PC sheet was investigated and also that deformation was observed by a CCD camera. Through this works, the followings were found: 1) there were two deformation modes of sheared profile. 2) The tip thickness wU was a primary factor, compared to the tip angle of U. 3) The equivalent wedge angle effect was revealed with respect to the upper/lower angles  and U, while the PC sheet was bent up by the lower knife indentation.