X3_X4_Series machine.pdf - 第162页

3 Technical data User manual SIPLACE X-Series 3.11 Vision cameras Software Version SR.601.xx 11/2005 US E dition 162 3.1 1.5.3 Fiducial crit eria 3 3 3.1 1.5.4 Ink spot criteri a 3 Locate 2 fi ducials Locate 3 fi ducials…

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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
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Fig. 3.11 - 6 Digital PCB camera, type 34
(1) PCB camera lens and illumination
(2) Camera amplifier
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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
3
3
3.11.5.4 Ink spot criteria
3
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
User manual SIPLACE X-Series 3 Technical data
Software Version SR.601.xx 11/2005 US Edition 3.12 PCB single conveyor
163
3.12 PCB single conveyor
The placement machine is supplied with a single PCB conveyor as standard. The dual PCB con-
veyor is available as an option from the factory (see Section 3.13
, page 166). The left or the right
side of the PCB conveyor can be used as the stationary side, as required.
The conveyor belts are driven by DC motors. There is a lifting table for clamping the PCBs in each
processing area. The PCB conveyor width can either be set from the user interface or preset in
the placement program.
3.12.1 Structure
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Fig. 3.12 - 1 Structure of the PCB single conveyor
(1) Input conveyor
(2) Processing conveyor 1
(3) Intermediate conveyor
(4) Processing conveyor 2
(5) Output conveyor
(6) Lifting table 1
(7) Lifting table 2
(8) Assembly trough