EXTRUSION DIE FOR IN-PROCESS COMPENSATION OF COMPONENT-ERRORS DUE TO DIE-ELASTICITY

Citation
T. Wanheim et al., EXTRUSION DIE FOR IN-PROCESS COMPENSATION OF COMPONENT-ERRORS DUE TO DIE-ELASTICITY, Journal of materials processing technology, 72(2), 1997, pp. 177-182
Citations number
7
Language
INGLESE
art.tipo
Article
ISSN journal
0924-0136
Volume
72
Issue
2
Year of publication
1997
Pages
177 - 182
Database
ISI
SICI code
0924-0136(1997)72:2<177:EDFICO>2.0.ZU;2-N
Abstract
A proposed die configuration is designed to effect the in-process comp ensation of the errors in the form of the extrudate which arise from t he elasticity of the extrusion dies. The die is in the form of a trunc ated, conical-shell which is either on a plane or a spherical bearing surface, to enable it to deflect elastically, thereby changing the dim ension of the die orifice. FE simulation of the work-material flow and the die deflection was conducted to verify the feasibility of the pro posed configuration. The deflection of the die is a function of the ex trusion force and the resulting reduction of the die orifice is in pro portion to this force. The simulation enabled optimisation of the geom etric parameters of the die with respect to component-form errors. (C) 1997 Elsevier Science S.A.