Hello!
I have a 2003 VF3ss - the spindle has just started making a "clunk" noise anytime you start the spindle. If you hold on to a toolholder while in the spindle and rotate it back and forth, you can feel the "clunk" each time you change direction. With the spindle running, if you manually increase or decrease the rpm, you can hear it as well. Upon a Haas service techs phone advice, we replaced the lovejoy like coupler at the top of the spindle - did nothing. Then service guy came to the shop and hooked up his special tool to the spindle - said spindle is bad. I am not buying into that just yet.
To complicate things further - at the same time, I am now having a more difficult time than usual when trying to machine any type of steel. Absolutely no rigidity whatsoever. Even trying to use a 3/8 4 flute carbide endmill as a counterbore tool - while pecking in the z, you can hear and basically feel the vibration! The bottom of the cbore is all chattery and unacceptable. Also much vibration when trying to take a finish pass with a 1.00 diameter x 3.00 LOC 3 flute endmill on a large aluminum block.....only in the x minus direction though???
While taking a conservative cut in a steel block, I put my hand on the spindle housing and could not feel any obvious vibration.
The spindle sounds the same as it always has - nothing unusual at any rpm - no whining at high rpm - don't usually run above 10K except for 1/16 em's - which isn't very often at all.
We have tried narrowing it down further with no luck. Any of you have thoughts on what might be happening?
Thanks!
sjr
I have a 2003 VF3ss - the spindle has just started making a "clunk" noise anytime you start the spindle. If you hold on to a toolholder while in the spindle and rotate it back and forth, you can feel the "clunk" each time you change direction. With the spindle running, if you manually increase or decrease the rpm, you can hear it as well. Upon a Haas service techs phone advice, we replaced the lovejoy like coupler at the top of the spindle - did nothing. Then service guy came to the shop and hooked up his special tool to the spindle - said spindle is bad. I am not buying into that just yet.
To complicate things further - at the same time, I am now having a more difficult time than usual when trying to machine any type of steel. Absolutely no rigidity whatsoever. Even trying to use a 3/8 4 flute carbide endmill as a counterbore tool - while pecking in the z, you can hear and basically feel the vibration! The bottom of the cbore is all chattery and unacceptable. Also much vibration when trying to take a finish pass with a 1.00 diameter x 3.00 LOC 3 flute endmill on a large aluminum block.....only in the x minus direction though???
While taking a conservative cut in a steel block, I put my hand on the spindle housing and could not feel any obvious vibration.
The spindle sounds the same as it always has - nothing unusual at any rpm - no whining at high rpm - don't usually run above 10K except for 1/16 em's - which isn't very often at all.
We have tried narrowing it down further with no luck. Any of you have thoughts on what might be happening?
Thanks!
sjr