DEVICE FOR PREVENTING MAIN AXIS OF MACHINE TOOL FROM THERMAL VARIATION

摘要

The invention is always precise machining by preventing the motor pulley and the spindle by cooling to force the frictional heat generated by a belt that rotates between the pulley to prevent the thermal expansion of the spindle head not caused displacement in the distance of the major axis center of the spindle It relates to a suppression device above the thermal displacement of the main shaft of the machine tool to be held,; And a spindle head, it is installed in the one spindle head and the spindle motor in which the motor pulley provided at the lower of the rotation axis, are spaced apart by a predetermined distance from the center of the above-described spindle head is provided on the side end and the spindle pulley in the middle in the main spindle of a machine tool made to be provided between the spindle and which is provided, above the above-described spindle pulley motor pulley comprising a belt for transmitting the rotational power of the motor to the spindle, the interior of the above-described spindle head and to provide a cooling oil for cooling the air heated by releasing to the outside fan motor to block the heat delivered to by to enter the cold air spindle head and force the heat delivered to the above-described spindle head oil cooler, connected to the oil cooler, and a five cooling to cool by force, while the cooling oil circulating within the main shaft head A connector for providing one achieved by further included.