INITIALISATION PROCEDURE
6.9.4. GRAPHIC MODE PROGRAMMING
After initializing the machine with the "START" key, activate "GRAPHIC" MODE pressing. This will display the "Tool" page as shown above.
Enter the program number (max. 6 digits). If the number is already used in another mode, the NC will generate an error message; otherwise the called-up program will be edited (see example above). Or select , your program from active directory (see §6.17)
Enter your work-piece reference (max 13 digits), this is an optional field.
Punch: Reference of the punch used. Enter punch number in the blank field or press
“Punch” to display all the punches in memory and select the punch existing on your machine with keys , then confirm with key “OK”.
Go back to "MANUAL 3" programming page.
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Die: Reference of the die. Follow the same procedure as for the punch to select the die fitted on your tooling.
Die Holder: Reference of the die holder. Follow the same procedure as for the punch to select the die holder fitted on your tooling.
If "0" is programmed = no die holder.
Die Block: Reference of the die block. Follow the same procedure as for the punch to select the die block fitted on your tooling
If "0" is programmed = no die block.
Punch Holder: Reference of the punch holder. Follow the same procedure as for the punch to select the punch holder fitted on your tooling.
FINGER: Reference of the finger. Follow the same procedure as for the punch to select the finger fitted on your tooling.
Punch Reverse: Parameter indicating reverse mounting of the punch.
X is programmed to indicate = punch is mounted normally.
V is programmed to indicate = punch is reversed.
NOTE: The punch-reverse option is only used as a reminder in MANUAL 2 mode.
Die Reverse: Parameter indicating reverse mounting of the die.
X is programmed to indicate = die is mounted normally.
V is programmed to indicate = die is reversed.
REMARK : This only applies to two or four V dies, as they are the only ones that can be reversed: X-axis safety calculations
Material: type of the material to be bent. Use or key to select - among the materials stored in memory - the type of material to be bent, then confirm with key
Õ
: standard strength displayed once the material has been selected. Should the strength be different, enter the tensile strength of material to be used in DaN/mm². Thickness : thickness of the material to be bent in mm.
Unfold Length: Value automatically calculated when profile is edited.
CREATION OF THE PROFILE
The profile (shape) of the part is specified in accordance with angles and segments.
Segments are measured « angle to angle ». (segment in blue during creation)
If angle is <90°, the end of the segment will be specified by the tip of the angle, if angle is
>90° the end of the segment will be specified by the radius tangent. See picture below.
Part dimensions in Alpha mode
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Use the dynamic display to draw your profile.
Press « dimension » key to enter the length and angle for each angle.
Once all dimensions are entered, the shape is highlighted.
You may then go to next page « Bending sequence »
touch, allows to select one or many precise dimensions. Each dimension chosen will be make with a bending flange on one of both bends that delimit this segment.
The segment or segments selected will be drawn with the color green.
Once the activated button, to deselect a segment already selected, select this button a second time.
It is possible to select multiple segments if they are not consecutive. The selection of a segment adjacent to a segment already selected deselects it automatically.
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The bending sequence may be either totally automatic or manually (bend to bend) specified by the user.
The automatic mode will consider the risks of interference between the part and the machine environment, reduces the number of sheet movements, axes limit. The back gauge position is measured as close as possible to the currently processed bend, with no risk of interference prior or during the bending cycle.
The manual selection mode is easier than the automatic one in that the user is given the opportunity to select the bending order, assess the interference risk visually and change the back gauge position.
- unfolded bend , already specified order - current bend
- initial process of the part
Automatic selection of the bending sequence Criteria display
Selection of the previous bend for unfolding
Selection of the next bend for unfolding
Mirror return of the part with regards to the bending axis
Selection of the previous gauge
Selection of the next gauge
Validation of the solution suggested in automatic mode or validation of each bend in manual mode
Review of the order already specified Next bend
Delete the last bend (or segment) in the sequence.
Delete all bends (or segments) Manual
selection
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In revision mode, for each bending sequence visualized, « axis » and « program parameter» pages allow modifying parameters either calculated or by default, from the bend displayed as well as Z1 or Z2-axes position.
BENDING CRITERIA (User Parameter)
Gauge support (0=No / 1=Manual / 2=Auto): Gauge in support, selected manually (1) or automatically (2)
Front/Back Ratio: minimum ratio from bending axis to the end of the material. (0.9 max) Used both in automatic and manual mode
Maximum intermediate bends for gauging: Number of bends authorized between the gauge and bend to be made (23 max).
Used in automatic mode
Tolerance for gauging on the edge: angular tolerance on the bending flange on the edge (45°
max).
Used in automatic mode
Tolerance on the bending flange
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Tolerance for gauging at 90: angular tolerance on the bending flange at 90° (45°max).
Used both in automatic and manual mode
Tolerance to the end
Opening (0 = Heavy part / 1 = Light): NC will calculate the minimum opening required to extract the produced component; If the part is to be removed flat to the die, then program 0;
program 1 for maximum opening (heavy part)
Opening into Mute (0 = No / 1 = Yes): Possible if no intermediate bend and worksheet pushed for the next bend.
Inside Gauging (0=No / 1=Manual / 2=Auto) : Gauge in inside bend, selected manually (1) or automatically (2), (0) for not accepted in any mode
At the end of the “AUTO” determination of the bend sequence, each angle of the work-piece profile inside the ‘‘WINDOW SHOWING GRAPHICAL REPRESENTATION OF THE PROGRAMMED PART” will be circled. These circles indicate that a solution has been found for the programmed part and in the “GRAPHIC WINDOW PART / MACHINE ”, your work-piece will be positioned on the tool for the execution of the first bend. This current bend will
be identified in the ’WINDOW SHOWING GRAPHICAL REPRESENTATION OF THE PROGRAMMED PART’’ by a red/orange circle. The yellow circles represent the bending
sequences yet to be accomplished.
Selecting the “VISU” function allows you to browse through the entire calculated bending sequence then browse sequences using the key. When you reach the last bend, key enables you to unfold your work-piece.
NOTE: If bends are already done they are not circled in the “work-piece window”.
If the following display is shown once “AUTO” function is validated:
This means that the automatic bend sequence calculation failed. (This situation can be caused by diverse reasons such as unsuitable tools selected for the job or the criterions for the bend simulation are too restricted or even contradictory).
To resolve the problem, check if the selected tools are suitable to carry out the job, they are correctly positioned and that the simulation criterions are correct.
Re-activate the “AUTO” search for bend sequence after correcting the above.
If still no solution is found, switch to “MANUAL” mode to visualise any eventual collisions.
The order in which visualisation can be done will always be angle n° 1, angle n° 2 etc.
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“MIR” key will permit you to obtain a different gauging configuration by swapping your work-piece front to back.
allows you to choose the gauging position of the backgauge finger when more than one bend exists between the bend in question and the backgauge. Press for inverse reaction.
After verifying the bend parameters (BEND OFFSET, BG WAIT, RETRACT DIST. …AUX.
FUNCTIONS), confirm your manually selected sequence using the key.
Proceed in the same manner for the remaining bends. One thing you should bear in mind that to determine the bending sequence in “MANUAL”, you should start from the last bend and work through to the first bend i.e. backward.
The other usage of the “MANUAL” mode consists of defining the last one or more bends the way you like to carry out, then exiting the “MANUAL” function by pressing the “END/FIN”
key. You can then determine the remaining bend sequences using the “AUTO” function.
Quit “GRAPHIC”, by pressing “HOME” key, a direct back-up of your program is carried out.
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