TOOL REFERENCE
The machine has been adjusted according to the following principle:
When, theoretically, the punch's leg face on the beam is in contact with the
surface of the table, the value of the Y1 and Y2 counters is 000.00.
In practice this adjustment is made using two calibrated blocks, whose value
has been introduced into the counters.
Definition:
The reference value (REF Y) is theoretically the sum of the heights of both
tools; punch and die.
The height of the punch is the distance between the "point" of the punch an
its leg face on the beam.
d
The precision of all bends realized by the machine depends on the reference
value REF Y.
The numerical control calculates the bending depth using:
the REF Y value,
the geometrical values of the tools,
the sheet metal thickness.
If the resulting bends differ greatly from the programmed value, the
reference and the values above must be controlled.
APPENDIX G: MISCELLANEAOUS PAGE 57
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