Southwestern Industries TRAK 2OP M11, Безопасность, Установка, Обслуживание, Сервис и Список Запасных Частей, Страница: 15 / 236

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Southwestern Industries, Inc.
TRAK

2
OP
M11 Installation, Maintenance, Service, & Part List Manual
2.4 Machine Major Subassemblies
2.4.1 Spindle
The spindle is contained within a cartridge and BT30 tool holders must be used. The spindle
bearings are permanently lubricated and require no additional attention by the user. The spindle
has an air purge system that is automatically activated during the tool change sequence; it blows
air down the spindle to prevent chips from being trapped between the holder and spindle taper.
The spindle cartridge design is also pressurized by air to prevent contaminants from getting up
inside the spindle. A spindle ring is also attached to the bottom of the spindle via the drive dogs
and prevents debris like coolant from getting up inside the spindle.
2.4.2 Spindle Motor & Drive
The spindle motor is 3 HP and directly drives the spindle via a coupling. The RPM range for this
machine is 50 to 6000 RPM.
2.4.3 Automatic Draw Bar Assembly
The automatic drawbar is an assembly consisting of an air cylinder and an actuator that
unclamps the tool. Tooling is changed by means of the Automatic Tool Changer (ATC), or can be
done manually by pressing and holding the “Unclamp” button. Tools are clamped when the
button is released. A clamping force of approximately 1000 lbs is generated to clamp the
toolholder to the spindle. The Automatic Draw Bar Assembly uses full system air and hydraulic oil
and requires no adjustment. There is an oil reservoir for the hydraulics that should be monitored
on a regular basis. If there is a leak in the system the oil in this reservoir will go down. This leak
will need to be fixed. This oil cup is found on top of the machine behind the spindle motor.
2.4.4 Retention Knobs
The TRAK 2
OP
Mill uses BT30 retention knobs as shown in Figure 2.4.4a. Tightening to the proper
torque value is important for all retention knobs. Please see the retention knob manufacturer for
the proper torque. You can order these retention knobs from Southwestern Industries under
part number RETN KNOB-2OPM11. Our retention knobs should be torqued to 30 ft-lbs. It should
be noted that lesser quality retention knobs will be torqued to something less than this.
Warning!
The spindle unit is not field serviceable. If the bearings go bad the entire
spindle cartridge will be replaced.