Mastering the technology of electric spindle maintenance is an important skill that operators need to actively learn, which can help everyone faster.

What are professional repair techniques to solve problems? For this reason, the maintenance personnel have repeatedly explored and summarized a setElectric spindle maintenanceThe craftsmanship.

Summary of Shenzhen electric spindle maintenance: The process of electric spindle maintenance is as follows:

1. Measure static and dynamic radial runout, lift clearance, and axial runout based on the damage of the electric spindle.

2. Use self-made specialized tools to disassemble the electric spindle, clean and measure the rotor swing and wear.

3. Optional bearings, the consistency error between the inner hole and outer diameter of each set of bearings should be ≤ 0.002-0.003 millimeters, and a gap of 0.004-0.008 millimeters should be maintained with the inner hole of the sleeve and a gap of 0.0025-0.005 millimeters with the main shaft;

In practical operation, it is best to use the thumbs of both hands to push the bearing into the sleeve. Tightness can cause deformation of the outer ring of the bearing, high temperature rise of the bearing, and looseness can reduce the rigidity of the grinding head.

4. Cleaning bearings is an important part of ensuring their normal operation and service life. Do not use compressed air to blow bearings, as the hard particles in compressed air can make the raceway rough.

5. Attention must be paid to the installation direction of cone bearings or angular contact ball bearings, otherwise the requirements for rotational accuracy cannot be met. Special tools will be used throughout the assembly process to eliminate assembly errors and ensure assembly quality.

6. When the inner hole of the sleeve deforms, the roundness exceeds the tolerance, or the fit with the bearing is too loose, local electroplating method can be used for compensation and grinding to the required level, and this method can also be used at the shaft neck.

7. The end faces of the round nuts, oil seal covers, and other parts on the electric spindle are in close contact with the end faces of the inner and outer rings of the bearing, so the perpendicularity between the threaded part and the end face is required to be high. The contact condition can be checked using the coloring method;

If the contact rate of the electric spindle is less than 80%, the end face can be ground to meet the requirement of perpendicularity. This work is very important, and its accuracy will affect the radial runout of the grinder spindle extension rod, thereby affecting the surface roughness of the ground workpiece.

8. Adjust the axial direction of the assembled electric spindle (measured with a tension spring ruler during adjustment), and measure the static and dynamic radial runout and lifting clearance until the assembly process requirements are met.