Well done ConcentricCorp. The video clearly depicts the capabilities/possibilities. I'm currently having some issues on a new Citizen L20. I'm going to post the situation in hopes that you or someone else can help. Thanks in advance. We've a brand new Citizen L20 and we're having chatter issue when turning. It's the first part we've tried running on the machine. The material is 8620, 11mm stock OD, 6.3mm finish OD, 28.75mm OD length. .01mm total tolerance, .8 finish requirement. The 11mm stock is necessary due to a 10.1mm OD beyond the 6.3mm OD. The stock is precision stock although it doesn't appear to be polished. I've tried using a CCGT .4mm nose radius(Sandvik), VCEX .1mm nose radius(Sandvik) and currently a 3 series DCGT .2mm nose radius(Kennametal). The tool is on center. Any thoughts/suggestions on tooling? Current cutting parameters are 2000RPM .075mm/rev. 226SFM is slow, if I increase the RPM chatter comes into play. The chatter isn't always consistent either when running higher RPM, I've seen the first 3mm of the part be acceptable then chatter the remaining length. I should also state that we're milling a flat on the part past the 6.3mm OD after the turning operation using a 6mm solid carbide end mill and you can see the back(bottom) of the end mill is dragging once the end mill is fully engaged, combined with the chatter issue it makes me think something is moving, lack of rigidity? Using M18 C0. in the program, couldn't find anything on a possible C-axis brake. The part is currently running with no taper. The guide bushing has extended land pads and from my understanding it's set correctly. I can hardly move the stock back and forth by hand through the gudie bushing, I'm able to rotate the stock by hand when the guide bushing is locked. ANY THOUGHTS/SUGGESTIONS ON PROPERLY SETTING THE GUIDE BUSHING? The main spindle(Z1) is as close to the guide bushing as possible when in production. I indicated the stock that was extended past the guide bushing, it's running true(concentric). I took out the main spindle collet and it appeared to have witness marks all the way around the front edge of the collet only, almost as if the stock spun in the collet and is only making contact with the very front of the collet. Any thoughts/suggestions? When I get back in the shop I'm going to run a short bar currently we are running 3 Meter bar length. I want to see if a short bar eliminates the chatter. I'm also going to make a temporary program that only skims the OD to see if less tool/machining pressure eliminates the chatter. What's the best practice to indicate the sliding head/turn tool to make sure it's correct? Any help/insight is greatly appreciated.
Well done ConcentricCorp. The video clearly depicts the capabilities/possibilities. I'm currently having some issues on a new Citizen L20. I'm going to post the situation in hopes that you or someone else can help. Thanks in advance.
We've a brand new Citizen L20 and we're having chatter issue when turning. It's the first part we've tried running on the machine.
The material is 8620, 11mm stock OD, 6.3mm finish OD, 28.75mm OD length. .01mm total tolerance, .8 finish requirement. The 11mm stock is necessary due to a 10.1mm OD beyond the 6.3mm OD. The stock is precision stock although it doesn't appear to be polished.
I've tried using a CCGT .4mm nose radius(Sandvik), VCEX .1mm nose radius(Sandvik) and currently a 3 series DCGT .2mm nose radius(Kennametal). The tool is on center. Any thoughts/suggestions on tooling?
Current cutting parameters are 2000RPM .075mm/rev. 226SFM is slow, if I increase the RPM chatter comes into play. The chatter isn't always consistent either when running higher RPM, I've seen the first 3mm of the part be acceptable then chatter the remaining length. I should also state that we're milling a flat on the part past the 6.3mm OD after the turning operation using a 6mm solid carbide end mill and you can see the back(bottom) of the end mill is dragging once the end mill is fully engaged, combined with the chatter issue it makes me think something is moving, lack of rigidity? Using M18 C0. in the program, couldn't find anything on a possible C-axis brake.
The part is currently running with no taper.
The guide bushing has extended land pads and from my understanding it's set correctly. I can hardly move the stock back and forth by hand through the gudie bushing, I'm able to rotate the stock by hand when the guide bushing is locked. ANY THOUGHTS/SUGGESTIONS ON PROPERLY SETTING THE GUIDE BUSHING?
The main spindle(Z1) is as close to the guide bushing as possible when in production.
I indicated the stock that was extended past the guide bushing, it's running true(concentric).
I took out the main spindle collet and it appeared to have witness marks all the way around the front edge of the collet only, almost as if the stock spun in the collet and is only making contact with the very front of the collet. Any thoughts/suggestions?
When I get back in the shop I'm going to run a short bar currently we are running 3 Meter bar length. I want to see if a short bar eliminates the chatter. I'm also going to make a temporary program that only skims the OD to see if less tool/machining pressure eliminates the chatter.
What's the best practice to indicate the sliding head/turn tool to make sure it's correct?
Any help/insight is greatly appreciated.
Branden B Hi, where are you located? I'm happy to direct you to your local support team.
Summerville, SC. Thank you.
Branden B Please contact Chuck at Adept Machine Tools - (704)498-0595.
Thank you. I've yet to meet Chuck the salesman, but I've worked with Robert from Adept.
Do you always make brass parts first or just for this video?
We use brass for video purposes so people can see.
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price of this machine ?
Good video but the sound is inconsistent
Very good