What is too much vibration and how can it be easily measured?
Place a cup of coffee on the CMM table. Turn off the servos and disconnect the air from the machine. If there are visible rings in the coffee cup, there is too much vibration. Note: The air to the air bearings should be off so that plant conditions can be checked. If there are no rings visually in the coffee cup, reconnect the air to the CMM. If rings are now visible, there is a good chance an air bearing is not properly set and is hammering. Q: Intermittent high pitch buzz on Z axis (Apollo). Servo amp is setup correctly, there is no slippage of belts or pulleys, belt tensions are correct. A: Corrective action: If the top Z axis drive timing belt assembly has loosened (two bolts), a high pitch ringing or buzz can occur. Q: Before I shut my Discovery MP off, I raise the Z axis all the way up or almost all the way up. Then I kill the power and Z comes down on its own, sometimes as much as 6 inches. A: More than likely you have a PH-9 installed. The counterbalance was set for a smaller r
