Omron V-TS Teaching Manual.pdf.pdf - 第200页
2.15 M odifying an Inspection Pr ogram 2- 173 Exposed Land Judged faulty if the solder wetting is insufficient. Electrode W ettability W idth Judged faulty if solder joint width with the electrode is not sufficient. Elec…
Chapter 2 Inspection Programming
2-172
Select wettability inspection defined using multiple inspection items.
List of Inspection Names for Fault Image and Wettability Inspection
Fault Image
Inspection Name
Description
Lifted Electrode
Judged faulty if the electrode lifts and its toe
is higher.
Electrode Protrusion
Judged faulty if the electrode bends upward
and its diagonal length is longer.
Electrode Vertical Bend
Judged faulty if the electrode bends upward
or downward.
Electrode Horizontal
Bend
Judged faulty if the electrode bends in a
horizontal direction.
Electrode Wettability
Height
Judged faulty if solder joint with the electrode
is not sufficient.
Electrode Wet
Judged as a fault if the solder wetting height
is low and forms a flat surface around the
electrode.
Electrode Wet Convex
Judged faulty if solder forms a flat line in the
proximity of the electrode.
Solder Convex
Judged faulty if solder forms a convex shape
between the solder tip and the electrode.
Land Wettability Length
Judged faulty if solder does not spread
sufficiently in the land length direction.
2.15 Modifying an Inspection Program
2-173
Exposed Land
Judged faulty if the solder wetting is
insufficient.
Electrode Wettability
Width
Judged faulty if solder joint width with
the electrode is not sufficient.
Electrode Side
Wettability
Judged faulty if solder joint with the
electrode sides is not sufficient.
Chapter 2 Inspection Programming
2-174
The following shows the procedure to optimize the inspection criteria.
1.
Select the [Criteria Setting (Product No.)] tab.
2.
Select a component number and click [Optimize].
Refer to "2.6.1 Criteria Setting (Product No.)" for the procedure up to
selecting a component number.
3.
The inspection criteria setting screen appears. Select either of "
Minimize false call risk” or " Minimize detection failure risk" and click
"Select wettability inspection item". The suitable Boolean
expression according to the component number and electrode is
automatically selected.
Inspection is optimized to minimize false calls regardless of the
selection between "Minimize detection failure risk" and
"Minimize false call risk". When the first is selected, inspection
criteria becomes more strict if the judgement is "Good" by a
great margin. However, even if it is the case, inspection criteria
does not become strict when the latter is selected.
4.
By clicking [Calculate], the inspection criteria which can minimize
undetected fault or excessive detection from the distribution of
measured values are set up.
The items on which the inspection criteria or the number of
detected errors changed are highlighted.
Operation
(1)
(2)
(4)
(5)
(3)
(6)