MV-9_Chapter 5. Teaching.pdf - 第118页
MV -9 Use r Manual 5-1 1 8 If lead disappears by too rem oval of m uch n oise , bina rization l evel , adj ust i m age reducing stripe value to clearly display lead pa rt . [T able 5-9 Lead separati on s etting v alue]…
错误!使用“开始”选项卡将 제목 2 应用于要在此处显示的文字。错误!使用“开始”选项卡将 제목 2 应用
于要在此处显示的文字。 .
5-117
[Figure 5-129 Bridge solder add example]
Comparison inspection
this function is to prevent occurrence of false defect when soldering status is normal but
lead amount is relatively small and white pixel ratio in solder inspection area is below
normal criteria.
For solder amount inspection, compare lead judged as defect with amount average value
of all lead, and compare it with the amount of adjacent lead.
If lifted inspection is set, lifted inspection will conduct same comparison inspection for
defective lead.
Default light
Click light change tap on the bottom of frame image screen to change light change to
change frame image. In general, currently selected light is set to light in inspection
window while drawing inspection window. (mounting, solder, binary, etc)
In case of IC/Bridge inspection window, light for each setting parameter tap can be set.
Only light in Bridge tap is et as the current frame image light and light in other taps
remains previous light.
10) Lead separation parameter
For lead separation parameter, adjust parameter for good division of lead part in preview
image. In general, select R for image type in horizontal + vertical light, and use high
binarization value and stripe width.
MV-9 User Manual
5-118
If lead disappears by too removal of much noise, binarization level, adjust image
reducing stripe value to clearly display lead part.
[Table 5-9 Lead separation setting value]
Item
Recommended setting value
light
horizontal + vertical light (Sometimes vertical or
horizontal)
image type
R (L for vertical or horizontal light)
binarization type
manual
binarization level
High value (100 ~ 200)
stripe width
High value (above 2)
area
High value (30 ~ 60)
[Figure 5-130 Lead separation setting]
[Figure 5-131 Lead inspection area]
Normal criteria
错误!使用“开始”选项卡将 제목 2 应用于要在此处显示的文字。错误!使用“开始”选项卡将 제목 2 应用
于要在此处显示的文字。 .
5-119
- Average lead pitch
Parameter that is automatically set by clicking reset during teaching. Average pitch
value between each lead calculated after lead separation. When average lead
pitch value is refreshed, max/min lead pitch value will be also automatically
refreshed.
- Min lead pitch
value calculated based on average lead pitch or entered by user. If interval
between lead separated during inspection is below this value, inspection window
will be judged as defect. When average lead pitch value is refreshed, this value
will be automatically calculate and set again by the following formula.
Min lead pitch = average lead pitch ⅹ 0.6
- Max lead pitch
value calculated based on average lead pitch or entered by user. If interval
between lead separated during inspection is above this value, inspection window
will be judged as defect.
Max lead pitch = average lead pitch ⅹ 1.3
- Use average pitch width during inspection
conduct Bridge inspection based on calculated average lead pitch value not using
lead separation during inspection.
- Lead gap/width inspection
When this is set, value is automatically set. However, random value can be set. If
lead width is larger than setting value or gap width is smaller, judge as defect. (Ex:
detect lead bending or lead shift.)
Lead separation verification
- Basically, lead separation is to get gap area that is inspection area for Bridge inspection.
However, if inspection is conducted when wrong parameter is set, there is no lead at which
should be lead or lead is recognized where there is no lead by noise. In this case, lead
separation does not properly conduct, there will be problem to correctly recognize bridge
error. Hence, to prevent this, use max/min lead pitch parameter to verify proper lead
separation after lead separation.
- Check lead separation and lead information using max/min pitch whether lead pitch is
smaller than min lead pitch or whether there is larger lead than max lead pitch to make
defect occurs to increase reliability of lead separation.
Normal judgment criteria in Bridge inspection window
- Min pitch that completed teaching < measured pitch < max pitch that completed teaching
inspection of foreign material between lead for condition of „min pitch that
completed teaching < measured pitch‟