In double - action Drawing
operations the press has two slides acting from top:- the drawing slide
with the draw punch & the blank holder slide with the blank holders
as shown below
The Blank holding slide transfers the blank holding force via. The
blank holder onto the blank & the draw die. The die & the
ejector are located in the lower die on the press bed. During forming,
the blank holder brings the sheet metal into contact against the die,
the punch descends from above into the die & shapes the part while
the sheet metal can flow without any wrinkling out of the blank holding
area. In this Case, the drawing process is carried out with a fixed
blank holder & moving punch. In double action drawing operations,
the drawing slide can only apply a pressing force.
These double Action drawing presses are also available in both pillars
type & frame design. Custom built presses with features as per
requirement of customer / applications can be designed &
manufactured.