Assessing Shape Repeatability in Variable Geometry, Polymer Extrusion Dies
James L Vogel
Die extrusion is a manufacturing process to create parts with a fixed cross-sectional profile by passing melted plastic through a die of the desired cross-section. The resulting plastic piece then hardens as it is pulled through a water trough and is then cut into pieces with the desired length. Extrusion has significant cost savings over other plastic processing methods. In current technology, the dies have a fixed geometry creating parts with a constant cross-section. The objective of this project is to create a die that can change shape by actuating a lever resulting in a part with variable cross sections. In order to determine the feasibility of variable geometry extrusion, dies have been designed and constructed. The process is tested by the use of a laser scanner that captures data points of the cross sections at multiple locations along the variable extruded part. The data is analyzed by a numerical process to determine the repeatability accuracy by comparing multiple profiles of the same extrusion.
Graduate Research - Graduate
Andrew P Murray, David H Myszka
Primary Advisor's Department
Mechanical and Aerospace Engineering
Stander Symposium poster
"Assessing Shape Repeatability in Variable Geometry, Polymer Extrusion Dies" (2017). Stander Symposium Posters. 856.