Improve jig concentricity with the spindle assembly in order to ensure rotating spindle torque transmitted only at work, without bending moments, thereby increasing the rigidity of the spindle. Spindle is a high-speed light load components distributor tongue mounted on a spindle sleeve seat, since the former distributor force point from the support of a long distance, so the bearing stiffness is higher, the structural design, the spindle two end uses four high-precision bearing thrust to the heart, and big mouth outwards, increasing the rigidity. Outside the ring between the upper and lower bearings have a spacer, grinding its thickness, can make the force even two bearings. Evenly distributed along the circumference of the lower end 6 of the spring, through the sleeve top tight gasket, the upper and lower end bearing a certain preload. Spindle during operation due to thermal expansion or elongation due to wear leaving the bearing gap increases, the spring can automatically be compensated, so that the bearing preload remains unchanged, in order to increase the stiffness.
Thus, the high-speed rotating components must be taken at the time of design, machining and assembly of effective measures, such as improving the accuracy of spindle rotation, using the angle matching method to improve to reduce the imbalance in the rotary member assembly and processing of coaxial degree degree.
Save exhibition installation test station is movable in the structural design of the gantry is made of cast iron closed structure, the bottom of the stand set up four shock absorbers.
The pickup solenoid resistance checks disconnect sensor wire connector, remove the sensor head, the blocking measure the electrical resistance of the solenoid coil with a multimeter, its value should be different between 0.9kn a 1.5kn (models its resistance is also different). If the resistance is large, compared with coil joints bad; if resistance is infinite, for the coil circuit; If the resistance value is small (or zero), compared with a coil short circuit. Coil open or short occurs, it should be replaced.
Bosch ABS wheel speed sensor resistance value of the solenoid common faults are solenoid open circuit, short circuit, the ring gear is damaged (missing teeth), interdental foreign matter (ferromagnetic) pole plugging and sensor head with the ring deflection and the like. When the electromagnetic coil is open or shorted, no pulse waveform output; ring missing teeth, foreign bodies and the ring gear and the ring gear sensor head installation malposition output waveform. When abnormal waveform, should be repaired according to the specific circumstances.
