SIPLACE Vision Customer_en.pdf - 第119页
Component Shapes Lead Measurement New SIPLACE Vision Functions for 702 Station SW S tudent Guide SIPLACE Vision (Customer) Edition 12/2008 EN Component Shapes 11 9 Colinearity In the case of colinearity (see came ra imag…
Component Shapes
New SIPLACE Vision Functions for 702 Station SW Face Down Recognition
Student Guide SIPLACE Vision (Customer)
Component Shapes Edition 12/2008 EN
118
5.5.1 Face Down Recognition
The face down recognition of components has been extended from (only) CHIP to now also support
BareDie, molded, SOxx, QFP, SOT, DPACK, Socket, Connector, Nonstandard, (on component shapes
with wraparound and gullwing leads). It is not used for ECV and MELF!
The measurement function can be enabled separately in the geometry program section "
Special
Measurement Options
".
The size of the face down recognition field (FaceDown Region Of Interest) can now be individually
specified.
This face down recognition has been extended to include a lead length measurement for CHIP and
molded component shapes. This enables you to differentiate between component images with the same
dimensions or to use another face down recognition run.
The measurement function for checking the length can be separately enabled in the geometry program
section "
Special Measurement Options
".
The components on the left in each of the following diagrams need to be placed.
5.5.2 Lead Measurement
Lead width inspection
The lead width inspection has now been extended from a size determination for lead recognition filters
to an active width measurement function.
This measuring function is switched on in the geometry program area
"Special Measurement Options".
Application: If a SO2 (SOD323) is taken up sideways on the nozzle, this was previously only recognized
if the lead filters failed.
NOTE:
Please note that these surface structures are NOT usually specified in the manufacturer's data.
This means that the manufacturer could alter this feature in any production batch.
With the new function (SV 4.0.1), the pin width is
measured actively during the inspection and must
match the programmed nominal width +/- width
tolerance factor (as shown, for example, in the
diagram on the left).
Component Shapes
Lead Measurement New SIPLACE Vision Functions for 702 Station SW
Student Guide SIPLACE Vision (Customer)
Edition 12/2008 EN Component Shapes
119
Colinearity
In the case of colinearity (see camera image), the
straightness of a group with the same features is
searched for.
Do NOT mistake this type of inspection with the
coplanarity check, in which the gullwing lead
height deviations (for IVP 3D sensor also the ball
height deviation) to a calculated lead level are
determined.
This measurement function can be separately
enabled in the geometry program section
Special
Measurement
Options.
This checks the lead beginning of wraparounds on
component shapes and the lead end of gullwings
in inspection mode.
When using lead groups with three or more leads,
we check whether the lead measurement edges
are on a calculated straight line with +/- colinearity
length tolerance. This tolerance value can be
individually set for each group and is therefore
independent of the lead length tolerance value.
The lead feature position is compared to the
calculated component angle for two pins in a
group. This function is active for the following CS
types:
SOxx, QFP, SOT, DPACK, Socket,
Connector, Nonstandard
Component Shapes
New SIPLACE Vision Functions for 702 Station SW Rectangle
Student Guide SIPLACE Vision (Customer)
Component Shapes Edition 12/2008 EN
120
5.5.3 Rectangle
A new feature for "Nonstandard" CS types is the rectangle. The search looks for rectangles which are
either features or entire components (see the following diagrams).
The rectangle needs to be visible with the normal illumination for leads (a golden rectangular area on a
BGA does not fulfill this requirement). Rectangular shapes in 90° and squares in 45° can be programmed
and recognized.
The minimum and maximum size (NO multiple measurement at the stationary cameras) depends on the
camera resolution.
Search for rectangles as features
Search for rectangles as entire components