D-serie level 1 EN - 第156页

SITEST Calibration Basics Nozzle Changer (C&P Head) S tuden t Guide Advanced Level 1 SIPLACE D-Series SITEST EN 05/2007 9-12 Sequence segment offset bottom (II): 9-5: Sequence at one nozzle:  After the segment offse…

SITEST

Component Camera Calibration Basics

Student Guide Advanced Level 1 SIPLACE D-Series

EN 05/2007 SITEST

9-11

9.3.2 Component Camera

 The Pixel size of the CCD sensors of the camera is determined in µm. Measured and calculated with

Ax/Bx/Cx/Ay/ByCy calibration values. Saved in

camera.xml

as: XU_Pixel / YU_Pixel in nm

 The pixel size is:

approx. 49700 nm for component camera SST 28 (for 12-segment head)

approx. 26760 nm for component camera SST 29 (for 6-segment head/12-segment head option)

approx. 17220 nm for component camera SST 23 (for 20-segment head)

 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. The value is saved as Kamera_winkel (camera_angle) in the data block of the component

camera, in the

camera.xml

Sequence segment offset top (I):

9-4: Principle picture of a calibration tool in the camera in 0° (left); in 180°(right).

PCB Camera - Component Camera Offset:

 During measurement of the segment offset up (I), the calibration of the PCB camera -> component

camera offset is performed with segment 1:

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

 The top segment offset (I) is compared to a calculated average value. (the segment offset I of

segment 1 is therefore no longer 0.)

 Segment 1 is the reference point for calculation of the offset (I and II).

 This distance is saved in REAL.MA at ‘Kopfoffsets’ at Kopf 1 Kopfoffset_X /..Y. The segment offset

down (II) for segment 1 is 0 (see below).

 The segment offsets for the remaining 11 segments are saved in the PIP_OFF.MA file (as deviation

to segment 1).

 Deviation in the X and Y direction of the rotary axis for the remaining segments, compared to

segment 1 (in µm).

 Measurement is performed at 0° and 180° or 90° and 270° in each case. The center of the segment

is then determined from these 0/180° or 90/270° values.

 The values for the segment offset are saved in the PIP_OFF.MA file.

ATTENTION:

For the segment offset I (top), the standard deviation value should not exceed 600 µm. The

difference between the segments must not exceed +/- 150 µm.

Segment offset II (down) absolute threshold +/- 150 µm and difference in values max. +/-

150 µm.

NOTE:

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

the other segments.

SITEST

Calibration Basics Nozzle Changer (C&P Head)

Student Guide Advanced Level 1 SIPLACE D-Series

SITEST EN 05/2007

9-12

Sequence segment offset bottom (II):

9-5: Sequence at one nozzle:

 After the segment offset up (I) calibration step has been performed, the calibration procedure for the

segment offset down (II) begins for C&P DLM 3:

 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; placed with the PCB-camera is the

exact placement position determined (in µm).

 Is the calibration tool picked with a Nozzle under 270 degree; 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.

9.3.3 Nozzle Changer (C&P Head)

 Each nozzle magazine has a fiducial which will recognize during the calibration procedure at first.

 optional, calibrate the pick up height from the nozzle changer.

 optional, calibrate the reject position from the nozzle changer, necessary to reject nozzle which are

defect.

9.3.4 Calibrating and Teaching Machine Positions

New function for calibrate the positions is the teach menu before calibrate, so that you can teach the

correct position for a successful calibration.

9.3.4.1 Conveyor Sides

This new calibration procedure is necessary for the modular conveyor system.

With the modular conveyor are all conveyor sides adjustable. For adjustment the conveyor sides we use

one stepping motor which is connected via a toothed belt to the adjustment unit. The position of the

conveyor side is recognized by a proximity switch, meaning that there is a switching point for each

conveyor side. With this calibration the switch points are optimized of the entire travel range of the width

adjustment. Calibration is required to ensure that the two positioning drives move the conveyor sides

parallel to one another.

Automatically Sequence (Transport mapping):

 Initialize the positioning drive, move to the right side (limit switch)

ATTENTION:

Before starting calibration of the nozzle changer, check the nozzle changer configuration and

the component level.

SITEST

Calibrating and Teaching Machine Positions Calibration Basics

Student Guide Advanced Level 1 SIPLACE D-Series

EN 05/2007 SITEST

9-13

 The positioning drive recognizes the fixed conveyor side(s) (two for dual conveyor) and moves the

flexible conveyor side(s) to the standard position of 55 mm and then accurately measures the

position set.

 The positioning drive moves the conveyor side(s) step-by-step (10 mm steps) and determines the

offset of the switching points for the proximity switches in the two positioning drives of the various

conveyor side positions.

 This calibration of the side position will be done for width adjustment wider and smaller.

 The results are saved in the TSP 301 (TSP 201) as correction values and taken into account later

when setting and measuring the conveyor width.

9.3.4.2 Calibrating the Conveyor Width

The conveyor width offset can be determined by using a board with a width of your choice. This width

must be entered by the operator. This ensures that a consistent predefined tolerance (offset) is used

between the conveyor sides, for the various different conveyor widths, thus preventing the boards from

getting jammed.

9.3.4.3 PCB Reference Corner

X Select gantry 1 or 2.

X Select PCB reference corner position right or PCB reference corner position left (dual conveyor)

X Moves the active gantry with the PCB camera over the reference corner position and switches the

screen display to the PCB camera for checking purposes. The reference corner position is visible in

the camera's field of view. Teach the gantry at the top right edge of the board, so that the PCB

reference corner is in the center of the camera's Field of view.

X This PCB reference corner determines the position coordinates for the PCB position fiducial search

in the machine.

9.3.4.4 Pickup Position (Calibrating the Changeover Table)

This calibration step determines the X and Y positions for the changeover tables which, depending on

the type, will be tracks 1-72 or 1-90 or which, depending on the configuration, can be 1-90 (without WPC)

or 61-90 (with WPC). A connected and activated WPC is automatically recognized by the software.

9-6: Calibrate the changeover table

NOTE:

Calibration needs to be performed for lanes 1 and 2.