西门子SIPLACE S-27 HM用户手册.pdf - 第181页
User Manual SIPLAC E S-27 HM 7 Station extensions Software vers ion SR.503.xx 07/ 2003 US Edition 7.5 Ceramic substrate centering 181 7.5.3 T echnical dat a 7 7 Substra te format 50 mm x 5 0 mm to 100 mm x 180 mm Substra…
7 Station extensions User Manual SIPLACE S-27 HM
7.5 Ceramic substrate centering Software version SR.503.xx07/2003 US Edition
180
Fig. 7.5 - 1 Ceramic substrate centering (side view)
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(1) Mechanical ceramic substrate centering
(2) Stop
(3) Ball bearing
(4) Centering slide
(5) Proximity switch connecting cable
(6) Compressed air connection
7.5.2.3 Maintenance
– Clean and grease the ball race in the X axis centering unit.
– If necessary, check that the pneumatic driving mechanism is running smoothly.
– The conveyor should be maintained as described in the maintenance instructions.
User Manual SIPLACE S-27 HM 7 Station extensions
Software version SR.503.xx 07/2003 US Edition 7.5 Ceramic substrate centering
181
7.5.3 Technical data
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7
Substrate format 50 mm x 50 mm to 100 mm x 180
mm
Substrate thickness 0.5 mm to 1.5 mm
Substrate model Unscribed (without problems)
Scribed (requires testing)
Support on the conveyor 2.5 mm
Optical centering: field of view of the PCB vision module
Type of illumination for light pastes:
Type of illumination for dark pastes and close
spacing to adjacent structures (> 1 mm):
5.7 mm x 5.7 mm
PCB camera (standard)
Multicolor camera (option)
(4 illumination levels to be selected)
Fiducial criteria See PCB vision module position
detection
Mechanical centering:
X/Y centering accuracy ± 0.07 mm / 4 sigma
PCB underside clearance 12 mm
Compressed air connection 0.55 MPa (5.5 bar)
7 Station extensions User Manual SIPLACE S-27 HM
7.5 Ceramic substrate centering Software version SR.503.xx07/2003 US Edition
182
7.5.4 Fiducial shape recommendation for ceramic substrates
The contrast between the carrier package material and the circuit-board conductor layer is gen-
erally very small with ceramic substrates. The fiducials must therefore be selected with regard to
certain criteria concerning the fiducial shape and structure. Recommended fiducial shapes and
structures are given below.
7.5.4.1 Fiducial shape
We recommend a rectangle or square with an edge length of > 1 mm, and a clearance of
>0.5mm.
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Fig. 7.5 - 2 Recommended fiducial shape
PLEASE NOTE
Single crosses are also suitable, but they take up more space. 7
0.5 mm
1.0 mm