1OM-1625-004_w.pdf - 第181页
1OM-1603 4-4 1. Specications : Chap.4 1007-004 Item Description Example : To correct the positional deviation covering the whole area of PCB (PCB Overall Correction) To improve recognition accuracy , put fiducial marks …
1OM-1603
4-3
1. Specications : Chap.4
1007-004
Item Description
8. Limitation of
Cutout and Hole
on PCB
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Note : The shadowed areas show the areas where a cutout should not exist.
When a cutout or a hole exists in the shadowed area, perform a PCB
positioning test and confirm that the PCB can be positioned normally.
9. Correction Method
for PCB Location
PEC Recognition
v By recognizing the fiducial marks using the PEC camera, positional
deviation covering the whole area of PCB and expansion of the printed
patterns on PCB can be corrected.
v To correct the positional deviation covering the whole area of PCB,
fiducial marks must be put on two or three places of PCB (Zones 1
through 5). Two fiducial marks are required for each unit PCB of a
multi-unit PCB.
v To correct the positional deviation of component placement points, put
one to two fiducial marks on the PCB. In this case, it is recommended
that two fiducial marks be located symmetrically such that the center of
gravity (the center of the fiducial marks) becomes the center of the
component placement point.
Unit : mm
F1E4
Unit : mm
(Front Side of Machine)
Range where a fiducial mark can be put
Hole, etc.
50.0 to 610.0
50.0 to 460.0
30.5
15
9
255
PCB Flow Direction
from Right to Left
15
30.5
9
255
15
15
PCB Positioning Stopper
PCB Flow Direction
from Left to Right
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1OM-1603
4-4
1. Specications : Chap.4
1007-004
Item
Description
Example :
To correct the positional deviation covering the whole area of PCB (PCB
Overall Correction)
To improve recognition accuracy, put fiducial marks diagonally on two
places of PCB when the 2-point recognition mode is selected. In the case of
3-point recognition mode, put two fiducial marks diagonally and one
fiducial mark close to one of the remaining corners.
PCB
Fiducial Mark
PCB
Fiducial Mark
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Example 1 : To correct the positional deviation of component placement
points (1-point recognition)
Put a fiducial mark on the center of component placement point
or a desired point around the center.
Recommended Position: Center of Component Placement Point
Fiducial Mark
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Example 2 : To correct the component placement point
(2-point recognition)
Put fiducial marks on the desired two points around the center
of component placement point.
Recommended Position : Point Symmetry
It is recommended that two points (fiducial marks)
should be located symmetrically on both sides of
the center of the placement position.
(A-A'/B-B')
• These fiducial marks are used to correct the component position and the
theta (angle).
The 2-point recognition is effective to correct deviated and distorted part
of the printing patterns.
Fiducial Mark
A
A'B
B'
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1OM-1603
4-5
1. Specications : Chap.4
1007-004
Item
Description
10. Conditions of
PCB before
Placement
(Regulation of
Component
Height)
Unit : mm
F1E8
Notes : (a) The position of the PCB support pin can be moved "10mm"
pitch by "10mm" pitch.
(b) The PCB support pin is set onto the position where it does not
touch any already placed component.
(c) The figure shows that the PCB is being supported.
(d) The dimensions are those for design reference.
Leave some room for the actual setting.
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