Trouble Shooting during drilling progress

Trouble Shooting during drilling progress

Date 06/05/2019
Problems ​ Probable causes   Solutions
 Noisy operation  Dry spindle  Remove the spindle and lubricate
 Broken bearing  Replace the bearing
 Motor bolts loose  Tighten the screws
 Belts loose  Pull the bells
Excessive wobbling ( accentric rotation) of the spindle  Loose spindle  Tighten the spindle
 Worn spindle shaft or bearings  Replace the shaft or the bearing
 Broken spindle  replace the spindle
 The motor will not start  Power supply  check the mains power supply
 Motor connection  check the motor connection
 Connections of the switches  check the switch connections
 Burnt motor windings  Replace the motor
 Broken switch  Replace the switch
 The tip is jammed in the workpiece  Excessive pressure on the feed hand-wheel  Apply less pressure
 Loose tip  Tighten the tip
 Speed is too fast  Change the speed
 The tip is burning or smoking  Incorrect speed. Revolutions per minute  See table speed
 Shavings will not discharge  Clean the tip
 Tip is worn or does not cut the material well  Check the sharpness and taper
 Need lubrication  Lubricate while drilling
 Incorrect feeding pressure  Apply less pressure
 The tip vibrates, the hole is not round  The tip was sharpened of centre  Sharpen the tip correctly
 Bent tip  Replace the tip
 The temperature of the spindle holder is too high  Insufficient lubrication  Lubricate the spindle holder
 The spindle will not stick to the sleeve  Dirt. Grease or oil in the morse taper  Use detergents ( alcohol,etc,) to clean the conical part of the spindle
 You are executing an unauthorized operation  Milling operations causing the fall
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