M20_Ope_E - 第153页
Chapter 5 Libraries 5-3 5-1-1-3 Targets Application Video Images of Components Due to the use of front-light illumination, video images of metallic parts (leads, etc.) appear white and mold parts appear black. Also the…
Chapter 5 Libraries
5-2
5-1 Vision-related Libraries
5-1-1 Vision Processing
5-1-1-1 Targets for Vision Processing
The following five items are targeted for the vision-process.
Presence / absence
of a nozzle on head
Nozzle ID
Fiducial mark Bad mark
Electronic component
5-1-1-2 What To Inspect
Electronic component: Measurement of translational (X,Y) and rotational (T) offsets in its
pickup position relative to the nozzle center.
Fiducial mark: One-point fiducial: Measurement of translational (X,Y) offset of the
board pattern.
Two-point fiducial: Measurement of translational (X,Y) and
rotational (T) offsets of the board pattern.
Four-point fiducial: Measurement of translational (X,Y) and
rotational (T) offsets of the board pattern.
Bad mark: Inspection of bad board presence.
Nozzle ID: Inspection of nozzle presence in the ANC and nozzle
identification
1
.
Presence/absence
of a nozzle on head: Inspection of nozzle presence on each head.
Note: Image data for the station nozzle and head nozzle have been registered prior to shipment. Also
sample image data for the standard components have been registered.
1
Nozzle identification: Nozzle ID label is applied to the flange of each nozzle. With this label, the system can
identify nozzles.
Chapter 5 Libraries
5-3
5-1-1-3 Targets Application
Video Images of Components
Due to the use of front-light illumination, video images of metallic parts (leads, etc.) appear
white and mold parts appear black. Also the right and left direction of the component is
reversed from the packaging state when the component is monitored on the vision monitor.
Transistor BGA
Packaging direction Monitored direction
5-1-1-4 Vision Processing Algorithms
Vision Processing Modes
You are to choose a vision processing mode from the below ones according to the component
type.
In addition, in most cases you are to choose an advanced mode under the vision processing
mode.
Chapter 5 Libraries
5-4
Terminat. Four-termination Search (X)
Four-termination Search (Y)
Chip CPL
Electrolytic Capacitor
Edge-midpoint Search
Overall Chip Process
Corner Search
Edge-midpoint Search (Non Recovery)
Pow. Tr. Top
Right
Bottom
Left
Blob One Blob (horizontal)
One Blob (vertical)
Two Blobs (vertical)
Two Blobs (horizontal)
Three Blobs (vertical)
Three Blobs (horizontal)
Four Blobs (corners)
Four Blobs (midpoints)
Multiple Blobs (vertical)
Multiple Blobs (horizontal)
Glass Melf
Transistor Top
Right
Bottom
Left