D-serie LEVEL II.pdf - 第88页
Gantry Overview Mechanical Structure S tuden t Guide Advanced Level 2 SIPLACE D Series Gantry EN 05/2007 6-2 6.1.1 Mechanical Structure 6.1.1.1 X-Axis Mechanical S tructure 6-2: Mechanical axis structur e – part 1 (D4 sh…
Gantry
Overview
Student Guide Advanced Level 2 SIPLACE D Series
EN 05/2007 Gantry
6-1
6Gantry
6.1 Overview
The SIPLACE D-series gantries consists of an X and Y axis each. The Y-axis is powered by a linear
motor with integrated temperature sensor. The X-axis is powered by a 3-phase servo motor, which is
fitted with an integrated temperature sensor and which is driven by a belt. When viewed in the direction
of transport, the Y motors move from left to right in a positive counting direction and the X motors move
from the input conveyor to the output conveyor, in a positive counting direction. The placement heads
are mounted on the head plates of the respective X axes.
6-1: Position of D4 machine gantries
Legend
1 Gantry 1 in placement area 1 7 PCB camera under the X-axis (here: gantry 4)
2 Gantry 2 in placement area 2 8 Y-motor primary part - linear motor (here:gantry 4)
3 Gantry 3 in placement area 2 9 Y-motor secondary part - magnets (here:gantry 4)
4 Gantry 4 in placement area 1 10 X-motor (here:gantry 4)
5 X-axis (here: gantry 1) 11 X motor belt (here:gantry 4)
6 Y-axis (here: gantry 1) T Transport direction
Gantry
Overview Mechanical Structure
Student Guide Advanced Level 2 SIPLACE D Series
Gantry EN 05/2007
6-2
6.1.1 Mechanical Structure
6.1.1.1 X-Axis Mechanical Structure
6-2: Mechanical axis structure – part 1 (D4 shown as example)
Legend
Mechanical Structure
With the help of a toothed belt drive, the rotary movement of the X-axis motor is directly converted into
a lengthwise movement of the placement head, in the X-direction.
The linear guide rails under the X-axis guide the head assembly plate and the placement head along the
X-axis.
The X-motor is cooled by a fan at the Y-axis pickup position and the motor temperature is also monitored
by a sensor.
1 Precision-cast gantry 7 X motor unit
2 Head mount with support for gantry head
distributor board
8 Toothed belt
3 Incremental encoder for Y-axis scale 9 Deflection unit
4 Primary part Y-linear motor 10 Y brake outside
5 Motor bracket X / heat sink (tab) Y motor 11 Y brake inside
6 Thrust bearing 12 Bumper X-axis outside
Gantry
Mechanical Structure Overview
Student Guide Advanced Level 2 SIPLACE D Series
EN 05/2007 Gantry
6-3
6.1.1.2 Y-Axis Mechanical Structure
6-3: Mechanical axis structure – part 2 - view from below (D4 shown as example)
Legend
Mechanical Structure
A linear motor positions the entire gantry (X-axis, head assembly plate and placement head) in the Y-
axis direction. This linear motor consists of a primary and secondary part. The secondary part consists
of permanent magnets, which are fastened lengthwise (Y direction) to the machine frame.
The primary part consists of inductors (motor windings), which are directly fastened to the gantry, in a
casing.
The drive is cooled by the compressed air supply to the placement head and also has integrated
temperature sensors, which are monitored by the axis controller.
1 Y brake 5 2x linear guide rails, each with a linear bearing
2 X brake 6 X-axis incremental scale
3 Digital PCB camera (shape varies) 7 Elastomeric spring 25x10.5x50
4 X-axis incremental encoder 8 Y-axis incremental encoder