SBS System – SB-1000 Operation
5
Vibration Sensor Location
The Vibration Sensor can be mounted on the grinding machine using the magnetic mount provided, or
permanent stud mount. The magnetic mount should be used during initial system start up until a good
permanent location is found on the grinding machine for the sensor. The sensor can then be permanently
stud mounted at that location, using an M5 set screw. A machined flat should be supplied at the mounting
location when stud mounting the sensor.
The location and installation of the sensor are critical for successful operation of the SBS Balance System.
Because of differing machine characteristics, Vibration Sensor location is specific to the machine model.
There are two general principles that should assist in finding a proper sensor location for your grinding
machine.
1.
Locate the Sensor in the same direction as the centerline between the grinding wheel and the
workpiece
. The best place to start is a
flat machined surface on the spindle
housing over the bearing closest to the
wheel and perpendicular to the spindle’s
centerline. A vertical mounting surface is
preferable on most cylindrical grinding
machines because the sensor is in line
with the grinding wheel and the
workpiece. For this same reason on
surface grinders and creep feed grinders, a
horizontal mounting surface is generally
best. Although the balancer itself may be
mounted either on the wheel or pulley end
of the machine, the Sensor should always
be aligned at the wheel end of the
machine.
2.
Locate the sensor on a rigid part of the machine structure, where vibration from the spindle will
be accurately transmitted.
On some machines the wheel guard can be a good location to mount the sensor,
if it is heavy enough and rigidly attached to the spindle housing. The balance system relies on vibration
signals received from the Vibration Sensor to accurately display the current vibration level in peak-to-peak
units, and to balance the grinding wheel. The system employs narrow bandwidth filters that prevent
vibration at non-spindle frequencies from being detected. However, in applications where the motor or other
machine components are running at the same speed or frequency as the spindle, interfering vibrations may
result. Careful experimentation with the sensor’s location minimizes sources of interference.
External Balancer/ Adaptors – Automatic mode
The Balancer is mounted to the machine spindle with the provided adaptor. The mounting
adaptor is specifically designed to accommodate a particular machine’s spindle
configuration, and varies in design. In general the adaptor consists of two parts. The
Adaptor Nut
mounts
on the grinding machine, usually replacing the spindle nut of the machine, either on the wheel or pulley end
of the spindle. The
Adaptor Flange
bolts to the Balancer, and threads onto the installed Adaptor Nut.
Appropriate wrenches are supplied for both parts. Use of a lubricating compound between the Balancer and
Mounting Adapter is recommended to ensure ease of future disassembly.
Lock Screws
are a feature of many adaptor designs, where required by high machine speeds or machine
spindle braking. These consist of M6 socket set screws in the face of the Adaptor Nut, and M5 socket set
screws in the outer diameter of the Adaptor Flange. These lock screws should be loosened prior to adapter
removal or disassembly.
Surface or Creep
Feed Grinders
Cylindrical or
Centerless Grinders
Sensor Mounted in
Direction of Workpiece
Contact
Workpiece
