X3_X4_Series machine - 第161页

User manual SIPLAC E X-Series 3 Technical data Software Version SR.601.xx 11/2005 US Edition 3.11 Vision cameras 161 3.1 1.5 PCB camera, type 34, digit al 3.1 1.5. 1 Structur e 3 Fig. 3.1 1 - 6 Digital PCB camera, type 3…

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3 Technical data User manual SIPLACE X-Series
3.11 Vision cameras Software Version SR.601.xx 11/2005 US Edition
160
3.11.4 Stationary P&P component camera, type 33, 55 x 45, digital
3.11.4.1 Structure
3
Fig. 3.11 - 5 Structure for the stationary P&P component camera, type 33, 55 x 45, digital
3.11.4.2 Technical data
3
(1) Camera housing with integral camera
and camera amplifier
(2) Glass plate - over the illumination and
lens levels
Component dimensions 0.5 x 0.5 mm² to 55 x 45 mm²
Range of components 0402, MELF, SO, PLCC, QFP, electrolytic capacitors, BGA
Min. lead pitch 0.3 mm
Min. ball pitch 0.45 mm
Min. ball diameter 0.25 mm
Field of vision 65 x 50 mm²
Method of illumination Front-lighting (6 levels, programable as required)
User manual SIPLACE X-Series 3 Technical data
Software Version SR.601.xx 11/2005 US Edition 3.11 Vision cameras
161
3.11.5 PCB camera, type 34, digital
3.11.5.1 Structure
3
Fig. 3.11 - 6 Digital PCB camera, type 34
(1) PCB camera lens and illumination
(2) Camera amplifier
3
3.11.5.2 Technical data
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PCB fiducials Up to 3 (subpanels and multiple panels)
Up to 6 for the Long board option (Optional PCB fiducials are
output by the optimization.)
Local fiducials Up to 2 per PCB (may be of different type)
Library memory Up to 255 fiducial types per subpanel
Image analysis Edge detection method (Singular feature) based on grayscale
values
Lighting method Front-lighting (3 levels, programable as required)
Detection time per
fiducial/bad fiducial
20 ms - 200 ms
Field of vision 5.7 x 5.7 mm²
Distance from the focus plane 28 mm
3 Technical data User manual SIPLACE X-Series
3.11 Vision cameras Software Version SR.601.xx 11/2005 US Edition
162
3.11.5.3 Fiducial criteria
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3
3.11.5.4 Ink spot criteria
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Locate 2 fiducials
Locate 3 fiducials
X-/Y-position, rotation angle, mean PCB distortion
in addition: shear, distortion in X- and Y-direction separately
Fiducial shapes Synthetic fiducials: circle, cross, square, rectangle, rhombus,
circular, square, and rectangular contours, double cross
any pattern
Fiducial surface
Copper
Tin
Without oxidation and solder resist
Warp ≤ 1/10 of structure width, both with good contrast to
environment
Dimensions of synthetic fiducials
Min. X/Y size for circle and rectangle:
Min. X/Y size for annulus and rectangle:
Min. X/Y size for cross:
Min. X/Y size for double-cross:
Min. X/Y size for rhombus:
Min. frame width for annulus and rectangle:
Min. bar width / bar distance for cross, double-cross:
Max. X/Y size for all fiducial shapes:
Max. bar width for cross, double-cross:
Min. tolerances, general:
Max. tolerances, general:
0.25 mm
0.3 mm
0.3 mm
0.5 mm
0.35 mm
0.1 mm
0.1 mm
3 mm
1.5 mm
2% of nominal dimension
20% of nominal dimension
Dimensions of patterns
Min. size
Max. size
0.5 mm
3 mm
Fiducial environment Clearance around reference fiducial not necessary if there is no
similar fiducial structure in the search area.
Methods - Synthetic fiducial recognition method
- Mean grayscale value
- Histogram method
- Template matching
Shapes and sizes of fiducials/
structures for
synthetic fiducials
other methods
For dimensions of synthetic fiducials,
see Section 3.11.5.3
Fiducial criteria
min. 0.3 mm
max. 5 mm
Masking material Good coverage
Recognition time Depends on the method: 20 ms - 0.2s