When the automatic tool change spindle motor is in operation, the built-in motor and the rolling bearing generate a large amount of heat during the rotation. Moreover, the spindle motor has a compact structure, a small gap, and a weak self-heating effect. If not release the heat in time, it will cause different degrees of thermal expansion between the internal parts of the spindle. Therefore, it is easy to affect performance parameters such as spindle stiffness and machining accuracy. More serious, affecting the lives of the spindle.
So, let me talk about two common cooling methods for ATC spindle motors: Water-cooled and Air-cooled:
(1) Water-cooled means that the cooling water circulation is designed inside the spindle motor, and the corresponding cooling machine is equipped outside so that the cooling liquid circulates the internal heat inside the spindle. The advantages of this cooling method are simple and reliable, and the cooling effect is more obvious. The disadvantage is that the cooling effect on the spindle core is relatively poor, and the cost of the cooling machine is relatively high.
(2) Air-cooled means that there is a forced convection channel between the housing of the spindle motor and the stator of the motor. The heat generated by the motor enters the forced convection zone through heat conduction. And finally, it brings the heat into the air to achieve a constant temperature of the spindle operation. Air-cooled is pollution-free. If using a static pressure gas bearing, it can circulate the gas inside the spindle to take away some of the heat of the motor.
It is necessary to cool the automatic tool change spindle motor, especially in high-temperature weather. If the spindle motor is overheated during the application process, you should consider whether to take heat dissipation measures and do not let the spindle motor overheat. In the case of operation, it will affect the service life.
We also offer the above two ATC spindles. For details, please click on the link or contact us at ATC-Spindle.com:
4.5KW ATC Air Cooled Spindle Automatic Tool Change Spindle ISO30 220V 380V