Sequence Of Operation; Understanding Springback - Baileigh Industrial HSP-50A Operator's Manual

Sequence of Operation

1. Insert the piece part into the V-blocks or onto the flat blocks.
2. Close the release valve (50) by turning it clockwise (cw) until it is off.
3. Connect the quick air valve air-in fitting to a 120 psi. (.83 MPa) air source.
4. Press the foot switch on the air valve to let the pump work until the serrated saddle (40)
nears the piece part, then release the foot switch. (When an air source is unavailable, pump
the handle (49) until the serrated saddle nears the piece part.)
5. Align the piece part to the ram to ensure center loading.
WARNING:
the piece part may cause serious injury.
Never compress springs or objects that when compressed, could shatter, or explode
out of the press causing serious injury.
6. Press the air valve foot-switch (52) or pump the handle (49 to apply load to the piece part.
Applied pressure is read on the pressure gauge (41).
7. When the work is done, release the foot switch on the air valve, or stop pumping the handle.
8. Slowly and carefully remove the load from the piece part by turning the release valve (50)
counterclockwise (ccw) in small increments until the ram backs away from the piece part.
9. Once the ram has fully retracted, remove the piece part from the bed frame.
10. Disconnect the air valve from the air source.

UNDERSTANDING SPRINGBACK

Springback, also known as elastic recovery, is the result of the metal wanting to return to its
original shape after undergoing compression and stretch. After the bending leaf is removed from
the metal and the load is released, the piece part relaxes, forcing the bent portion of the metal to
return slightly to its original shape. The key to obtaining the correct bend angle is to over bend
the metal a little and allow it to spring back to the desired angle. All metals exhibit a certain
amount of spring back.
Failure to center the piece part on the blocks and the ram to
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