00196457-05_UM_SX12DX12_SR706_EN.pdf - 第157页

User Manual SIPLACE SX1/SX2/DX1/DX2 3 Technical data and assemblies From software version SC.706 .xx V ersion 06/2012 EN 3.9 Vision system 157 3.9.5 PCB camera, type 34, digit al 3.9.5.1 Structure 3 Fig. 3.9 - 4 PCB came…

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3 Technical data and assemblies User Manual SIPLACE SX1/SX2/DX1/DX2
3.9 Vision system From software version SC.706.xx Version 06/2012 EN
156
3.9.4 Stationary component camera P&P, type 36
3.9.4.1 Structure
3
Fig. 3.9 - 3 Structure of stationary P&P component camera, type 36, 55 x 45, digital
3.9.4.2 Technical data
3
3
(1) Camera housing with integral camera
and camera amplifier
(2) Glass plate - illumination and optics un-
derneath
Component dimensions 1.6 mm x 0.8 mm to 32 mm x 32 mm
Component range 0603 to SO, PLCC, QFP, BGA, special components, bare dies,
flip-chips
Min. lead pitch 0.4 mm
Min. lead width 0.24 mm
Min. ball pitch 0.56 mm
Min. ball diameter 0.32 mm
Illumination type Front-illumination (6 levels, programmable as required)
User Manual SIPLACE SX1/SX2/DX1/DX2 3 Technical data and assemblies
From software version SC.706.xx Version 06/2012 EN 3.9 Vision system
157
3.9.5 PCB camera, type 34, digital
3.9.5.1 Structure
3
Fig. 3.9 - 4 PCB camera, type 34, digital
(1) PCB camera lens and illumination
(2) Camera amplifier
3.9.5.2 Technical data
3
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
Illumination type Front-illumination (3 levels, programmable as required)
Detection time per fiducial
/Bad fiducial
20 ms - 200 ms
Field of vision 5.78 mm x 5.78 mm
Distance from the focus plane 28 mm
3 Technical data and assemblies User Manual SIPLACE SX1/SX2/DX1/DX2
3.9 Vision system From software version SC.706.xx Version 06/2012 EN
158
3.9.5.3 Fiducial criteria
3
3.9.5.4 Ink spot criteria
3
Locate 2 fiducials
Locate 3 fiducials
X-/Y-position, rotation angle, mean PCB distortion
additional: shearing, distortion separately in X and Y direction
Fiducial shapes Synthetic fiducials: circle, cross, square, rectangle, diamond,
circular, square and rectangular contours, double cross
Pattern: any
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 3.9.5.3
Fidu-
cial criteria, page 158.
Min. 0.3 mm
Max. 5 mm
Masking material Good coverage
Recognition time Depends on the method: 20 ms - 0.2s