Smart Gui - Algorithm Training Material_rev1.pdf - 第221页
Copyright © ViT rox All Rights Reserved . U-type Algorithm - 3D Multijoint (Solder Profile Inspection) 221 1. Fillet Solder Length (%) & Fillet Width (%) ● The overall pass criteria depends on: a. Solder Width (%) &g…
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U-type Algorithm - 3D Multijoint (Solder Profile Inspection)
220
Solder Profile
a. Joint Size & Joint Offset
● To adjust the sizes and the offset for joint inspection boxes
b. Fillet gradient
● Tick to Gradient measurement.
c. Fillet Image Plane
● These are the types of 2D Lighting. Select the one with having highest
contrast among interested inspection region and the background.
● Usually choose angle 2+3
d. Fillet Grey Thres
● Usually set to 160
Grey Thres
Measured Grey Thres
PASS FAIL
e. Fillet Height Thres
Height Thres (um)
Measured Height (um)
Fail Pass
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U-type Algorithm - 3D Multijoint (Solder Profile Inspection)
221
1. Fillet Solder Length (%) & Fillet Width (%)
● The overall pass criteria depends on:
a. Solder Width (%) > Solder Width Thres (%)
b. Solder Length (%) > Solder Length Thres (%)
c. Both solder Length and Solder Width must pass.
● Pass Criteria for single pixel:
a. Measured Grayscale < Joint Grey Thres
b. Solder Height (%) > Joint Height Thres (%).
c. OR Relation between 2D and 3D as pass criteria for single pixel
Width
Length
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U-type Algorithm - 3D Multijoint (Solder Profile Inspection)
222
1. Identify Pad Area:
● Must have epad information.
● If no manually add the pad
location.
2. Identify Solder Toe area:
● Good solder slope - Pass
● Flat Solder - Proceed to cold solder inspection.
Pass
Fail
Pass
3. Identify Cold Solder:
● The solder height threshold will affected by
the lead height (s,u) & Body Height (B) set.
(Next Page)
Flat solder / Excess Solder