The following is the standard operating procedure and precautions for replacing and repairing grinding wheels in a double end grinding machine:

一、Preparation before replacement

1、Security protection

Cut off the power supply of the equipment and hang a warning sign

Wear cut resistant gloves and goggles, clean up debris in the work area

2、Tool preparation

Prepare a crane/forklift (for heavy grinding wheel handling)

Check if the specifications of the new grinding wheel (diameter/thickness/grain size) meet the equipment requirements

二、Dismantling steps of grinding wheel

1、Upstream processing

Raise the grinding disc to the highest position and move it out of the work area

Remove the central gear and outer ring, and pay attention to protecting the measuring probe

2、Lower plate disassembly

Loosen the 4 fixing screws on the edge of the lower plate and install the lifting ring screw

Use a crane to lift the lower plate steadily and move it to a safe area

3、Old grinding wheel removal

Remove residual abrasive particles (can activate lower disc rotation assisted cleaning)

Check the wear of the drive shaft and apply lubricating grease

三、Installation of new grinding wheel

1、Positioning installation

Align the new CBN grinding wheel with the center of the drive shaft and tighten the screw clockwise

When installing the upper plate, it is necessary to adjust the flatness synchronously (with an error of less than 0.005mm)

Adjust parameter settings

The first dressing of a new grinding wheel takes 1 minute, and daily maintenance and dressing can be done in 15 seconds

Suggestion for dressing speed: For rough grinding, use fast dressing (with a large pitch), and for fine grinding, use slow dressing

四、Repair operation specifications

Use of repair tools

Diamond trimming pen tilted installation (3-15 ° upwards, 20-30 ° horizontally)

Adjustment feed rate control: coarse grinding ≤ 0.05mm/time, fine grinding ≤ 0.025mm/time

Post repair processing

Spray cleaning agent to remove detached abrasive particles (to prevent secondary pollution)

Check the dynamic balance of the grinding wheel (vibration value should be less than 0.5 μ m)