SiplaceX4_en.pdf - 第532页

1 - 27 S tudent Guide SIPLACE X Edition 09/2005 1 1 Sitest 27 PCB camera - Component camera offset: 11 – At the measurement s for Segment offset bottom (II) we calibrate the PCB -> component cam- era offse t with Segm…

1 - 26

Student Guide SIPLACE X

11 Sitest Edition 09/2005

Component camera: 11

– The Pixel size of the CCD sensors of the camera is determined in µm. Measured and calcu-

lated with Ax/Bx/Cx/Ay/ByCy calibration values.Saved in KAM_DAT.MA as:XU_Pixel /

YU_Pixel (50000 nm 12 nozzle-comp.-camera SST 12) (81000 nm 6 nozzle-comp.-camera

SST 13) (27500 nm DCA-camera SST14)

– The camera center is determined.

– The Mounting angle of the CCD-chip in the camera to the turning level of the placement star

is measured.Saved as ‘Kamera_winkel’ at the Data bloc of the respective comp. camera in KA-

MDAT.MA.

Sequence segment offset bottom (II): 11

Sequence at one nozzle:

– Is the calibration tool picked with a Nozzle under 0 degree; optically centered and placed with

the PCB-camera is the exact placement position determined (in µm).

– Is the calibration tool picked with a Nozzle under 90 degree; optically centered and placed with

the PCB-camera is the exact placement position determined (in µm).

– Is the calibration tool picked with a Nozzle under 180 degree; optically centered and placed

with the PCB-camera is the exact placement position determined (in µm).

– Is the calibration tool picked with a Nozzle under 270 degree; optically centered and placed

with the PCB-camera is the exact placement position determined (in µm).

– This sequence is repeated. From the 8 placement positions is the average value of the place.

Deviation calculated and taken for the seg. offset.

– The calibration tool do not turn at this sequence.

1 - 27

Student Guide SIPLACE X

Edition 09/2005 11 Sitest

PCB camera - Component camera offset: 11

– At the measurements for Segment offset bottom (II) we calibrate the PCB -> component cam-

era offset with Segment 1:

– The distance in X- and Y- direction of the camera centers is determined in µm.

– The camera center of the PCB-camera is the reference.

– This distance is saved in REAL.MA at ‘Kopfoffsets’ at Kopf 1 (or in future Kopf 2) Kopfoffset_X

/..Y. (The Segmentoffset bottom of Segment 1 is 0)

– The Segment offsets of the other 11 (5) Segments are saved, as a deviation to segment 1, in

PIP_OFF.MA.

– For the Segment offset bottom the values are without limits.

Sequence segment offset top (I): 11

Fig. 11.2 - 14 Princple picture of a calibration tool in the camera in 0° (left); in 180°(right).

– After Segment offset bottom (II) we calibrate with Segment offset top (I) for C&P DLM 2 seg-

ments :

– the deviation in X- and Y-direction of the turning axis of the segments referring to the camera

center of comp. camera in µm.

– The Measurement is done in 0° 180° respective 90° 270°.

– The Segment offset values are saved in PIP_OFF.MA.

Note:

For the segment offset I (top), the size of deviation shouldn‘t be larger than 450 µm for the seg-

ments and the deviation between the segments shouldn‘t be larger than +/- 150 µm.

The segment offset II (bottom) should not be larger than +/- 200µm. The deviation of the segments

should not larger than +/-150 µm.

Note:

The segment offset II (bottom), from the first segment is always 0 that is the reference value to the

other segments.

1 - 28

Student Guide SIPLACE X

11 Sitest Edition 09/2005

Twin head height: Calibrate Head height mean to determine Z-Zero point correction. 11

Fig. 11.2 - 15 Twin head height

Sequence:

– move to zero pulse

– set the position counter to 0

– move with 517 nozzle to the transport rail

– measure actual position

– subtract ‘Kopfhöhe’ head height from Ideal.ma (65500)

– subtract theoretical nozzle length

– is zero point correction Z-pos.act. -nozzle length -head height = 0-corr.

IC camera: 11

– After measuring the head height of TWIN head (Z-axis zero point correction) the TWIN -IC

camera is calibrated.

– The first measurement is the focus level. That means, the twin head move with the Z-axis of

the cover from the stationary camera. (This height is the centering height for bottom side of

components.)

– The Pixel size in µm of the camera is determined next. Saved as:/XU_Pixel / YU_Pixel/ of cam-

era 11(in 79000 nm).

– The camera center of the TWIN- IC-camera refer to the zero point of the machine (X- / Y-

counter zero position).

‘

1. Incremental scale on the Z-axis

2. Incremental encoder fixed

3. Top of the conveyor rail

4. Head height

5. Nozzle lenght