|Home » Forums » CNC » Message||Login|
You are not logged in. Consider these WOODWEB Member advantages:
Spindle chuck sticking1/31
I have an older CNC (Cosmec Coquest 510), and have recently started having trouble with the chuck releasing the tool holder. I have read all the information contained in the manual that came with the router and can't find anything about greasing the chuck. When I give it the command to open I can hear it trying to open, but it doesn't open all the way. I do have the required air pressure. What I have noticed is that it only happens when it is cold. On warm days the chuck opens normally. Once it opens the first time, it works fine the rest of the day. I have been putting a heater close by in order to warm it up some on cold days. This is working, however I know that it needs to be fixed. Does anyone have any knowledge of how to solve this issue?
We use "lusin protect g31" spray
Do you have a regular tool holder maintenance schedule? If not you want to be cleaning the tapers on a regular basis....I always did mine once a week.
Your tool holders should be clean and shiny as should be the inside of the spindle taper. If you can't see up into the taper use a flashlight and a mirror.
You can purchase a male cleaning tool for the spindle. Just spin the router at a low speed and insert the fabric covered male taper tool up into the spindle.
For the tool holders I think the most recommended cleaner is bronze wool (think steel wool but made from bronze). When that wouldn't get them clean we'd fall back on the less favorable fine Scotch Brite pads. 20 seconds or so of rotating the tool holder back and forth in your hand while encasing the taper end with the bronze wood does the trick.
If the problem persists some might say to use anti-seize compound but that makes a mess and I'd be a bit concerned about tool holder slippage. I've used it on shaper spindle tapers but those go about 1/2 to 2/3 of the speed of your router spindle.
All this being said I have to ask how cold the shop gets at night. With the problem only occurring when the spindle is cold you have to consider metal expansion and contraction. My money though is on a dirty spindle taper.
I believe the fingers may need a bit of grease up in there with a paint brush
The tool holders need a good wipe down with Lusin weekly. Blow out the air conditioning filter and vac pump at the same time.
BH Davis posted the same. 2/3 of our problems went away with routine maint.
Do you have an air dryer ?
Thanks guys for your response. To be honest, I have not been cleaning tool holders as I should have. I have kept up with the maintenance listed in my handbook, but this was not mentioned other than just blowing them off and wiping them with LPS-1. I will take your advice. Thanks again.