I have a Komo VR510 with a drill head. When itís time for a drill bit to drill a hole, the pneumatic cylinder for that particular bit fills with air to push that bit lower than the rest of the bits, and then the head itself lowers into the part to drill a hole. If it's a set of holes, such as in a line bore, all seven heads will drop and seven holes are drilled.
One of the seven heads is not holding its position when engaged. I can visibly see the bit push back up into the cylinder slightly while a hole is being drilled. This results in a hole that is not being drilled full depth. What are some possible causes and remedies to this problem?
From contributor A:
Below are a few possible causes of your issue:
-Air leaking in the shaft cylinder for the drill bit in question, also could be a broken or weak pressure spring inside of the air cylinder.
-Wrong drill bit type.
-Dull drill bit.
-When gang drilling the motor to the drill bank might be slowing down due to excessive feed and load.
-Gear might be worn out for the spindle in question.