SM411F_Service Manual.pdf - 第86页

The following is the procedure to perform the ‘R-Of fset Calibration’. 1. In the <Grid> area, input “0” for all R- axis values of the heads for which the calibration is to be performed. 2. In the <Grid> group…

1.2.10.3. Head Z / R Offset Calibration

The distance from the upper surface of the PCB to the Z axis home is set

mechanically. For the Z offset calibration, measure the offset for this distance based

on the upper surface of the PCB by using pneumatic pressure.

For the R offset calibration, measure the offset of the angle to align the nozzle

holder based on zero (0) degrees.

The following is the process that the Z offset calibration is performed. The nozzle

used for calibration is the CN040 nozzle.

1. Click the <Nozzle Prepare> button and remove all nozzles inserted in the

nozzle holders of all heads. Insert the CN040 nozzle into the No. 14 hole of the

ANC.

2. In the <Grid> group, select the Z axis for which the calibration is to be

performed and click the <Detect Z Offset> button after selecting the

<Automatic> check box.

3. The head moves to the designated position on the ANC automatically. Then the

machine creates pneumatic pressure and performs calibration while moving the

spindle down from Head 1 to Head 6 in order.

4. If the calibration is completed, the calibration result is reflected on the Z

column of the <Grid> group automatically. When performing calibration

manually, insert the CN040 nozzle into each head in order manually and move

down the spindle to perform calibration while checking the pneumatic pressure

of the head in the Vacuum dialog box.

5. Click the <Update> button to apply the calibration result to the machine.

The reference values for the Z-offset are as follows.

 Head1~ Head6: -1.5 ~ 1.5 mm

If the Z offset value exceeds this range, it means that the head has a serious

problem. Therefore, check for the home location, spindle, LM, and verify if the

motor operates normally.

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The following is the procedure to perform the ‘R-Offset Calibration’.

1. In the <Grid> area, input “0” for all R-axis values of the heads for which the

calibration is to be performed.

2. In the <Grid> group, select the R-axis for which the calibration is to be

performed and click the <Nozzle Holder Check> button.

3. Then the message “Please Check and Register Nozzle CNT0 to ANC 1-2 Hole.

First, We must Put all Nozzles from Heads manually. To Moving Down Z Axis,

Click [Next]” appears in the message window.Remove all nozzles inserted in

the nozzle-holder manually by clicking the <Next> button. At this time, for the

ANC, the virtual nozzle CNT0 is set for the No. 1 hole of the ANC and it is

regarded that the corresponding head picked the CNT0 nozzle.

4. Then the message “Up to Align Height and Mirror Close. To Move, Click

[Next].” appears. Then move the spindle to the part recognition height so that

the nozzle holder of the head can be seen from the fly camera and click the

<Next> button to close the mirror.

5. Execute the ‘Current Position’ dialog box by clicking the shortcut menu.

6. Rotate the spindle in the R-direction by using the teaching box so that the

shape of the nozzle holder becomes ‘( )’. At this time, the nozzle holders of the

heads with interlocked mechanism must be assembled in the same direction.