13
IMPROPERLY FORMED/DEFORMED EDGES
-It may be necessary to add a slight lubricant to the surface of the sheet being formed to aid the
flow of material through the forming rolls. Lockformer’s GALV-OFF available from FORMTEK is
recomended.
-The operator may have to experiment with hold down settings for desired results. Run test pieces
to check different settings on the hold down nuts or bolts.
RUNNOUT
Some materials may have a tendency to drift away or runnout from the entrance gauge. The edge
dimensions will be uneven from beginning to end. Check the following points when runnout is a
problem.
-Be sure to hold the material firmly against the entrance gauge. Some materials will require significantly
more pressure then others.
- Hold down settings should be checked and reset. Some materials may require settings that are
tighter then this manual specifys. Use caution when setting the holdowns tighter then normal.
Prolonged use of the machine with tighter settings will reduce the life span on some of the machines
parts.
-Due to variations of the physical characteristics of material, it may be necessary to reset the
entrance gauge bar if the material pushes away from the gauge bar or the lock is not formed
properly. There should be a scratched line along the side of the entrance gauge to locate the
original factory setting. Also it may be necessary to “Taper” the entrance gauge (set the gauge at
a slight angle) to eliminate runnout.
-The exit gauge bar can be used to push on the exiting material when the material is not flowing
straight or evenly throughout it’s length such as when the edge is running out. Difficult parts may
TROUBLE CHECKS
The CENTER SPACER is positioned between the top and
the bottom forming heads on the 2nd large hold down stud
(at the exit end of the machine near the opening roll). The
function of this spacer is to control the vertical clearances
between the top and bottom rolls at stations 4 and 5. The
vertical clearance between top and bottom rolls is set in the
factory with a feeler gauge to a clearance of 0.2-0.4mm
(0.008
”
-0.010
”
) at the outside edge of the rolls.
NOTE: It may be necessary to insert shim washers above
the spacer to obtain the proper clearance.
LK-20 CENTER SPACER
