How do I know my CNC Spindle is going bad?
While machining equipment has evolved a lot over the past few decades and become both more intuitive and more durable, the fact remains that all moving parts will eventually wear out, which includes the spindle. Once it begins to go bad, you’ll need to invest in premium spindle repair to get things back up and running once more. How do you tell if your spindle is ailing, though? What are the signs to look for so you can head off emergency repairs?
Finish Issues
One sign that your spindle is about to need repairs is if you notice finish issues on machined products. As your spindle wears, you will begin to notice that the finish is not as good on specific axes. For instance, you could have a good finish on the X and Y axes, but a poor quality finish on the Z axis (or any combination thereof).
Spindle Mouth Wear
If you notice wear at the spindle mouth, it is a good sign that you need to invest in repairs. To check for this, you can use a known good toolholder and bluing. Check it on the spindle to see if there are gaps in the bluing transfer. You can also check the runout with a T.I.R. – measure at the spindle and then again at the bench for the identical toolholder. Note that toolholders sticking is also usually a sign of spindle wear and looming repair needs.
Fretting in Toolholders
Check the inside of your toolholders for signs of wear and damage. Fretting is one of the most common and most noticeable types of wear, and is created by the toolholder slipping inside the spindle. Any toolholders with visible fretting should be replaced and if you notice that the replacement develops fretting quickly, it’s an indication that the spindle is the issue.
Vibration
It should go without saying, but any sort of unusual vibration during operation is most likely going to be related to spindle wear and/or damage. Make sure that your spindle is properly lubricated to increase bearing lifespan and prevent vibration (unless your spindle is sealed, of course).
Noise
Unusual noise during operation may be a sign of spindle wear, as well. However, you’ll need to play detective to make sure that the noise is coming from the spindle itself.
Temperature
Finally, temperature is also a means to determine if you need to invest in premium spindle repair. During operation, your spindle should usually remain cool. Some machines do get a little warm, but if the spindle becomes noticeably hot during machine operation, it’s important to have it repaired quickly. If your machine is equipped with a spindle chiller, it may have a temperature alarm that can clue you in to issues.
Premium Spindle Repair
No matter how on the ball you are with maintenance or how vigilant you are about issues, you’ll eventually need to invest in premium spindle repair. At Advanced Spindle Technology, we offer the fastest repairs possible, and return your spindle to you better than new.
