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5. Spindle Adjustment
5 - 26
5-3 Adjustment procedures for each control
5-3-1 Basic adjustments
(1) Items to check during trial operation
[1] Directly couple the motor and machine, and check the control status during machine run-in.
[2] Check that the command speed and actual speed match.
If the speeds do not match, check spindle parameters again.
(Especially check SP017, SP034, SP040 and SP257 to SP384.)
[3] Check the NC parameters Slimit1 to 4, Smax 1 to 4, and Smini.
[4] Is the rotation smooth?
[5] Is there any abnormal noise?
[6] Are there any abnormal odors?
[7] Has the bearing temperature risen abnormally?
(2) Adjusting the spindle rotation speed
The rotation speed is received as digital signals from the NC, and thus does not need to be
adjusted. If the spindle rotation speed does not match the commanded value due to a dimensional
error, such as the pulley diameter, adjust the parameters with the following method.
[1] Set the spindle specification parameter slimit.
Slimit = SP017 × (deceleration rate between motor and spindle)
[2] Set the S command to half of the maximum spindle rotation speed, and then measure the
spindle rotation speed.
If the speeds do not match, change the Slimit value in small increments until the speed
matches.
[3] Set the S command to the maximum spindle rotation speed, and check whether the spindle
rotation speed matches.
[4] In machines involving gear changeover, etc., change the gears, and then adjust with steps [1]
to [3] above.