|Home » Forums » Solid Wood Machining Forum » Message||Login|
You are not logged in. Consider these WOODWEB Member advantages:
Chatter on side profile cutter1/4
I run a Weinig Hydromat with 10 heads. We use it to mill flooring, with our profile heads being opposing.
We are getting a chatter along the side profile cut. It is typically the same on either side, comes and goes, and is generally more severe on the ends (both leading and trailing) than in the center, though it can appear along the entire length.
So far we have checked all the basic setups, heads setting, insert weights, outside fences and hold downs, air pressure to the outside hold downs. We also realigned the back fence and it is straight within 0.001 from one to the next. (We use a 6' straight edge to do that so we can view 6' at a time.)
We recently changed out the groove spindle with one that Weinig inspected and repaired. We will send the tongue spindle out to be done.
Nothing seems to make an impact on this and we have tried much trial and error with trying hold downs and fences at different positions to create a worse/better scenario.
Normally I would look at your hold down of the part closer, but it appears you have already done this.
Do the parts showing the most chatter have warp in them? Are they raw material going in?
The issue may be starting at the first and second heads. If the parts are warped and you are not holding them down tight the warp will push up into the heads as they cut and the part will be thinner on the leading and trailing ends. This means that the hold down pressure will taper off a both ends and you will get chatter.
Well it seems you have a great deal of experience on this machine. You have mentioned all the obvious things that could escape the troubleshooting process.
Here's a basic check sheet with Chatter Mark causes for various head positions. Hope this helps.
Chatter on Right Head
• Fences Not Properly Aligned
Chatter on Left Head
• Fence Guide After Left Head Not Holding or May Be Out of Parallel
Chatter Marks In General
• Bad Bearings
P.O. Box 2226
Thanks for the helpful responses!
We will definitely take a look at the things you guys provided.
A cracked housing is something that I had in the back of my mind, but I am concerned about evening being able to find the crack. Would it be pretty noticeable?
I would not put too much emphasis on a cracked housing unless you had a major accident with the cutter heads, maybe the the radial locking mechanism is something to look at also.
What about the in feed fence when positioned at "0" position, is it parallel to the rest of the fences? That might be something tat was missed.