| Summary: | 碩士 === 國立高雄應用科技大學 === 機械與精密工程研究所 === 100 === Deep drawing is one of the most popular and widely used sheet metal
working processes and is used for producing cups from sheet metal at a very
high rate. The deep drawing process is affected by many design parameters,
such as blank shape, formability characteristics of material, blank holder force
and clearance between punch and die, etc. In the drawing process, blank holder
and die geometry are very important formability factors for obtaining the
optimal products. The main objective of this research is to investigate the
effects of blank holder and die shapes and clearance between punch and die,
using five different kinds of blank holder and die shapes. Besides, the research
also considered the punch force to selection of a suitable machine for drawing
process. A numerical simulation model was introduced and applied using the
commercial software Abaqus 6.9. A drawing cup deforming process
simulation was carried out to verify the numerical simulation model. We
measured the distribution of blank holder force and clearance between punch
and die for each set of tool geometries. The experiments show that bevel
angles of blank holder and die and clearance influence value of blank holder
force and quality of product.
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