Replacing The Home Position Sensor; X-Axis; Y-Axis - JUKI KE-1070 Maintenance Manual

1-6. Replacing the Home Position Sensor

1-6-1. X-Axis

The X-axis home position sensor is not provided on the KE-2070/80. It is built in the magnescale.

1-6-2. Y-Axis

The Y-axis home position sensor is an important device that determines the squareness between
the X-axis and Y-axis. If the position of the Y-axis home position sensor is not adjusted correctly
after it has been replaced, the squareness between the X-axis and Y-axis may deviate, causing
the mounting accuracy to lower.
(1) After the sensor has been replaced, start
up the machine, cancel "Home Position
Return", and press the emergency stop
button.
After replacement, move the X-axis to the
front side and check that the distance
between the Y-axis home position sensor
and the magnetic switch is 1.0 0.2mm. If
this is not satisfied, loosen the sensor
fixing screw and vertically move the
sensor to adjust the distance 1.0 0.2mm.
(2) Manually move the head from the front
side toward the far side, and stop it at a
position where the Y-axis home position sensor, which has not been replaced, is turned ON.
(3) Move the newly mounted Y-axis home position sensor from the far side toward the front side
and secure it temporarily at a position where the sensor is turned ON.
(4) Select the MS parameter mode.
(5) Press the F9 key to display the control menu and select [Y Setup].
The machine performs the home position return only with the left Y-axis home position
sensor.
(6) Manually move the head from the far side toward the front side with inching operation (jog
movement at a low speed) in the teaching mode, and stop it at a position where the Y-axis
home position sensor, which has not been replaced, is turned ON.
(7) Move the newly mounted Y-axis home position sensor from the far side toward the front side
and secure it temporarily at a position where the sensor is turned ON.
(8) Manually move the head from the front side toward the far side with inching operation (which
moves the head step be step) in the teaching mode to check that the newly mounted sensor
is turned ON within
which has not been replaced, is turned ON.
If the newly mounted sensor is not turned ON within
newly mounted sensor and repeat the adjustment from step (6).
(9) Press the emergency button again to cancel the emergency state and conduct the home
position return operation.
Maintenance Guide
3 steps from the position where the Y-axis home position sensor,
1-20
3 steps, readjust the position of the