SG_FSE_SiplaceHF_HF3_00193901-05_eng - 第218页
1 - 18 S tudent Guide SIPLACE HF/HF3 6 Collect &Place-He ad / DLM2 Edition 09/2005 18 6.2.5 Prep aring Z-axis Reference Run Fig. 6.2 - 5 Preparing Z-axis reference run (6 C&P head) The Z-axis runs to uppermost en…
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Student Guide SIPLACE HF/HF3
Edition 09/2005 6 Collect &Place-Head / DLM2
17
6.2.4 Initialize Valve Drive at DP-station
The function of the stepper motor at the DP station, with the aid of an eccentric movement, is to
contact the sleeve and rotate the components and nozzles to the correct position via the DP axis.
Fig. 6.2 - 4 Initialize stepper motor at DP-station
Key
(1) Home position DP drive around 1 mm away from segment
(2) Engaged position DP drive at segment
– The stepper motor of the valve drive is turned to the home position. The stepper motor runs
and the light barrier on the cam disk sets the end signal.
– Because of the special shape of the cam disk the stepper motor is able to recognize the home
position.
(DP german abbrev. for turning sleeve)
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Student Guide SIPLACE HF/HF3
6 Collect &Place-Head / DLM2 Edition 09/2005
18
6.2.5 Preparing Z-axis Reference Run
Fig. 6.2 - 5 Preparing Z-axis reference run (6 C&P head)
The Z-axis runs to uppermost end stop. When stand still is detected the Z-axis runs down by 27
digits with reduced force.
This Z-axis position with reduced force enables the placement star to move into reference posi-
tion.
6.2.6 Reference Run at Star-Axis
Fig. 6.2 - 6 Reference run at star-axis
The star-axis turns counter clockwise to zero point pulse of the incremental shaft encoder. The
zero point correction is loaded. The star-axis turns clockwise (according the zero point correction)
until the position counter shows 0 digit.
Segment number 1 is now in pick-up / placement position.
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Student Guide SIPLACE HF/HF3
Edition 09/2005 6 Collect &Place-Head / DLM2
19
6.2.7 Completion of the Z-axis Reference Run
Fig. 6.2 - 7 Completion of the Z-axis reference run
– The Star-axis turns to 6250 digit(HF)2500(HS/S/F). At this position the segment ball bearing is
exactly between Z-claw and circular guidance.
– Z-axis moves to the upper end stop and takes the position. The same is done at the lower end
stop.
– The average value of these results is calculated and with a negative sign is loaded for refer-
ence value (ZPC) to the axis controller.
– Star-axis is moved back to reference position.
– Z-axis starts the reference run again with this new value.