Tehnički vjesnik, Vol. 26 No. 1, 2019.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20180809113703
Influence of Roller Ball Tool in Single Point Incremental Forming of Polymers
Karthik Thangavel
; Department of Mechanical Engineering, PSG College of Technology, Peelamedu, Coimbatore – 641 004, India
Rajenthirakumar Duraiswamy
; Department of Mechanical Engineering, PSG College of Technology, Peelamedu, Coimbatore – 641 004, India
Srinivasan Nagarajan
orcid.org/0000-0002-3148-7419
; Department of Mechanical Engineering, PSG College of Technology, Peelamedu, Coimbatore – 641 004, India
Sridhar Ramasamy
; Department of Mechanical Engineering, PSG College of Technology, Peelamedu, Coimbatore – 641 004, India
Sažetak
Polymers defend the metals in making complex geometries because of their strength to weight ratio. Utilizing the conventional process has become a challenge in manufacturing customized products. Increase in demand of tailored products in minimum quantities with preferred quality creates the need for developing new techniques. Incremental forming process is an emerging flexible technology that can obtain pre-defined profiles through deformation of metals and polymers in desired thickness at a reasonable cost. In this work, single point incremental forming (SPIF) of different polymer materials is done using roller ball tool and modest fixture system. Materials such as polyvinyl chloride (PVC), polypropylene (PP), polycarbonate (PC), high density poly ethylene (HDPE) are considered for this investigation due to high applications in automobile and biomedical area. The experiments are designed to analyse the influence of variable process parameters such as tool diameter, step size, spindle speed and sheet thickness. The analysis is carried out by characterizing the formability with depth of failure, thickness distribution, surface roughness and microstructure evaluation. Based on the result, the spindle speed and sheet thickness show high response in formability, surface roughness and depth of failure. The tool diameter has a significant effect on the surface roughness. PVC shows the springback resistance and cracks are observed in the circumferential route on the transition area among the bottom and side wall portion.
Ključne riječi
failure analysis; formability; microstructure; roller ball tool; thickness distribution
Hrčak ID:
217104
URI
Datum izdavanja:
16.2.2019.
Posjeta: 2.065 *