Spindle Assembly Structure Of The CNC Lathe Machine

Spindle Assembly Structure Of The CNC Lathe Machine

CNC Lathe Machine Manufacturer China shares that the spindle of CKA6150 CNC lathe is a hollow step shaft. The inner hole of the spindle is used to pass through the long bar and through the steel bar when the top is removed. It can also be used through the mechanism of pneumatic, electric and hydraulic clamping device. The taper hole at the front end of the spindle is 90mm in metric system, which is used to install the center sleeve and the front center. Sometimes also can install mandrel, using the friction force of conical surface with direct drive mandrel and workpiece rotation. The taper hole at the back end of the spindle is the process hole.

The spindle of the CNC Lathe Machine is mounted on three supports. There are three rolling bearings in the front bearing. The front bearing is c-class precision 3182124k double-row cylindrical roller bearing, which is used to bear radial force. This kind of bearing has the advantages of good rigidity, high precision, small size and large bearing capacity, etc. : a pair of 7020ACTA/P5DBB centripetal thrust bearing is adopted as the rear support. Spindle bearing on the CNC lathe spindle running accuracy and stiffness of great influence, CNC Lathe Machine spindle bearing should be in no clearance (or a small amount of interference) under the condition of operation, directly affect the machining accuracy of the machine tool, so the spindle bearing clearance must be regularly adjusted. Front bearing clearance adjustment method is as follows: first, loosen lock screw on the front end adjusting nut, then tighten the adjusting nut, at this time of the 3182124 k type inner ring is relative to the main shaft cone to the right, as a result of the bearing inner ring is very thin, and also like spindle cone, inner hole taper with 1 to 12, therefore, the inner ring radial elastic expansion in axial moving at the same time, in order to adjust the extent of the bearing radial clearance or preload, after making the proper adjustment, tighten lock screw to adjusting nut. The radial runout and glaze runout tolerance of the spindle are 0 0 imrrj. The radial runout of spindle of nc lathe affects the roundness and concentricity of machining surface. Axial runout affects the flatness and pitch accuracy of machining end face. In general, when the runout amount of the spindle exceeds the allowable value, the runout quantifier of the spindle can be adjusted to the allowable value only by adjusting the clearance of the support properly. If the radial runout is still not up to the requirements, should be adjusted after the bearing.

CNC Lathe Machine spindle before and after the support of the lubrication, is fed by the lubricating oil pump, lubricating oil through the oil hole for adequate lubrication of the bearing, and take away the heat generated by the running of the bearing. To avoid jiao oil, at the abutment before and after using the oil groove seal, namely after the front nut and bearing sleeve on the surface has a circular groove of the section, the sawtooth CNC lathe spindle rotates, due to the effect of centrifugal force, the oil is along the inclined plane () in the direction of the trunk is flung to the flange of oil tank, oil through the oil return orifice flow to the bottom, and then flow back to the oil pool in the left leg.

There are three halogen wheels on the spindle of nc lathe. The two gears on the right end are not engaged at the same time. When the gears 702(z=68) are engaged and the gears 703(z:50) are detached, the spindle is in low gear. When both gears are detached, the spindle is idle. When gear 703<. =50) meshing and gear 702(z=68) disengage, the spindle is in high speed gear. Gear 705(z=66) is used for connection with gear drive of encoder shaft.