SiplaceX4_en - 第200页

1 - 6 S tudent Guide SIPLACE X 5 Gantry Edition 09/2005 6 Description: 5 The head moun ting plate with the C&P head or TWIN-hea d is moved via the linear guid ance which are mounted over the seconda ry pa rt of the l…

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Student Guide SIPLACE X

Edition 09/2005 5 Gantry

5.1.1 Mechanical structur of the X- and Y- axes

Please Note: X- and Y- Axes have the same basic mechanical parts.

Fig. 5.1 - 3 Mechanical structure "Gantry"

Legend

Please Note: The temperature sensor compensates according the temperature of the head

mounting plate the offset between PCB camera and nozzle to ensure the highest accuracy.

(1) X-axis (carbon fiber composite material) (Three

kinds of gantry possible, CFK 02 (HF), CFK

04(HF,X) and CFK 06 (X) configurable)

(2) Head mounting plate with integreted tempera-

tur sensor

(3) Incremental scale X-Axis (4) Linear guidance (above/below the magnet)

(5) Secondary part X-axis (Magnet) (6) PCB-camera below the X-axis

(7) Boards (Head interface with Vision board below -

vertical- is the Adapter board)

(8) X- trailling cable

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Student Guide SIPLACE X

5 Gantry Edition 09/2005

Description: 5

The head mounting plate with the C&P head or TWIN-head is moved via the linear guidance which

are mounted over the secondary part of the linear motor and under the secondary part of the linear

motor in X direction. The Y- axis moves the entire X-axis with the C&P or TWIN-head.

For X and Y position recognition we use incremental metal scales. They are positioned over the

secondary part of the X - Linear motor and under the secondary part of the Y- Linear motor. A cor-

responding incremental encoder reads the increments from the metal scales and generates track

signals as a result. The encoder transmits the track signals to the axis control card, which uses

the track signals to determine axis position and to control the motor.

Left and right of every incremental scale are mounted the metal actuators for the BERO´s. The

BERO‘s on the X- and Y- axes are required for the reference run, the velocity check and the

hardware limit switch.

Additionally each axis has a mechanical end stop (elastomer bumper).

5.1.2 Pneumatic connectors on the gantry

Fig. 5.1 - 4 Pneumatic connectors on the gantry

Pneumatic connectors Legend

– Cooling the Y- axes occurs via a motor which generate compressed air it is mounted in the

pneumatic unit.

– The X axes are cooled from the C&P head or Twin head with exhaust of the vacuum system.

(1) Holding circuit C&P6/12/20 head (2) C&P6/12 head pick up circuit an air kiss

(2) Twin head Segment 1 vacuum generator (3) Twin head Segment 1 retract unit

(4) Twin head Segment 2 / C&P20 retract unit (5) Twin head Segment 2 / C&P20 Vacuum

generator

Pneumatic connector for cooling the Y-Linear

motor

Pneumatic connectors under the Head interface.

Pneumatic connector for cooling the X-Linear

motor

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Student Guide SIPLACE X

Edition 09/2005 5 Gantry

5.2 Reference run Gantry

5.2.1 Sequence reference run at X- and Y-axis

Fig. 5.2 - 1 Sequence Reference run X_Y

– Both axis are started at the same time.

Axes move to reference position

switch

Slope 1 to 0

change moving direction of axis

End signal for refence run is start

condition for the next step

Slope 0 to 1

start search for zero pulse

Zeropoint correction is loaded to

the axis controller when zero pulse

is recognized

Start X-Y- reference run

Preconditions: Reference Run

on Star-, Z- and DP- Axes is done

X - / Y -Axes Reference Run

Search the commutation position

of the linear motors