SIPLACE Vision Customer_en.pdf - 第65页
Component Shapes Leaded Component Shapes Specific Component Shapes S tudent Guide SIPLACE Vision (Customer) Edition 12/2008 EN Component Shapes 65 5.3.7 Leaded Component Shapes In SIPLACE Vision, leaded comp onents are d…
Component Shapes
Specific Component Shapes Optical Recognition and Evaluation of Unleaded COs
Student Guide SIPLACE Vision (Customer)
Component Shapes Edition 12/2008 EN
64
5.3.6.3 Algorithm Values
These settings do not normally need to be changed.
Diagram centering result
The diagram shows the following:
CS X/Y orientation: green angle in CO center.
CO center recognized for placement: white
dotted line.
Permitted CO angle tolerance: diagonal
yellow lines in CO camera center.
Since the results display is so important, it was
already shown during the intermediate centering
steps. If an error occurs, this will also be displayed,
so you can make the necessary adjustments.
The minimum thresholds for various measurement
steps can be altered here.
The relevant threshold and measurement value
bars will then be redrawn in the recognition step
diagram.
If the quality values for the symmetry procedure
are not achieved, centering will be performed with
the template method.
Sub sampling coarse/fine angle: gathers
several points of the image together, to form one
evaluation point.
Attention: The predefined recognition menus will
change when you switch over threshold values!
Component Shapes
Leaded Component Shapes Specific Component Shapes
Student Guide SIPLACE Vision (Customer)
Edition 12/2008 EN Component Shapes
65
5.3.7 Leaded Component Shapes
In SIPLACE Vision, leaded components are defined as those which have measurable i.e. visible
(narrow) leads. In most cases, the leads are aligned towards the outside.
The CO position and angle are determined from various algorithms such as lead selection, filtering the
recorded image etc.. In a second step, the so-called inspection stage, the system uses gradient
formation to determine the number of leads, lead position and lead grid (pitch) for the CO position
measured in the previous step.
From SR/MC 603, the position of asymmetrical leads can be optically recognized and then corrected
with "Orientation". The operator gets the notification "component picked up at a wrong angle". In the
case of components such as SOT 23, the additional measuring time required is due to the dynamics
times for the C&P 6/12 head.
Important! This function may NOT be activated for symmetrical lead arrangements! It would lead to
random angle placement errors.
From SR/MC 702 (SV 4.0.1), SOxx, SOT, DPACK, QFP, Socket, Connector and Nonstandard can
use 'non-specific component features’ for FaceDown recognition.
ECV, SOT, SOXX, SOJ, QFP, PLCC, DPACK, Socket, Connector and Nonstandard now have a lead
width measurement function. This also functions with programmed notches for nonstandard CSs.
Notes for Joint Datasets (ICOS and SIPLACE Vision)
In the following special cases, you may need to program separate group descriptions for ICOS
and SIPLACE Vision:
In ICOS systems, these bodies are occasionally described as leads when bright component bodies
are used.
Group and/or lead descriptions were also consciously omitted in this system.
Components with leads were often trained with only the SIZE measurement mode. In this case,
check whether a general correction for both systems needs to be made in ICOS!
Component Shapes
Specific Component Shapes Leaded Component Shapes
Student Guide SIPLACE Vision (Customer)
Component Shapes Edition 12/2008 EN
66
5.3.7.1 ECV Component Shape (Electrolyte Capacitor Vertical)
JEDEC description
JEDEC description
Lead description
Special features
The inspection mode is set for Leads. The body dimensions can not be reliably calculated using the
capacitor leads inside the body.
Conversion from existing CS dataset:
– The body shape Vertical cylinder is NOT recognized from the ICOS data during conversion from
SIPLACE Pro.
– The ECV component is misinterpreted as Moulded CS and needs to be manually edited.
– ECVs with stabilization leads need to be classified as Nonstandard, if they are to be programmed
for SIPLACE Vision.
– Components also need to be programmed as Nonstandard if body recognition for polarity
recognition is programmed.
Joint datasets with ICOS data possible -
Body description: vertical (upright) cylinder.
The body Z-height determines the length of the nozzle type
to be used in the C&P head.
The X/Y body dimensions determine the field of vision, the
Region of Interest.
This component consists of two lead groups, each with one
lead.
The leads in the two groups must be identical!
The leads are inside the body surface.
This component shape has so-called Gullwing leads i.e.
leads with level contact surfaces.
These leads are as wide as the solder resist contact
surface, on the board connection surface.
The contact length must be programmed shorter than the
visible lead length, although they appear to have identical
lengths.
The lead width is significantly narrower than the lead length.
The lead length must not exceed 50 percent of the body
length.
No notches may be programmed. The leads are aligned
towards the outside of the body.