Okuma, Machining Navi

[Santa Fe]

I need to research into this function and my first thought was to come this this place and ask.

Have anybody used this function of Okuma already and if so please share your experiences.

Also is it something I would control via G|M codes or is it something with the machine parameters and a switch on the control of the machine,

I will research also at other places but I am trying to gather all the info I can from all the good places I know of.

Thanks in advance.

[crazy^millman]

Get a hold of your Okuma Dealer and talk to the Apps department. You can also call Okuma USA they can help also.

Maybe Brad or someone else will chime in.

[crazy^millman]

Quick Search found this:

Then this:

I think you have to have the option if you have the option then your book should have the details you need.

[YoDoug®]

There are four different versions of NAVI. 

1. NAVI Mg - this is a guided version for the mill. It uses a microphone and other input from user to minimize chatter. It is more of a manual operation.

2. NAVI Mi - This is an automatic version for milling spindles that uses a vibration sensor to analyze chatter and adjust speeds automatically. 

3. NAVI Lg - This is a guided version for lathe turning operations. This is used in conjunction with the spindle speed variation function to minimize chatter.

4. NAVI Tg - This is a guided version for lathe threading operations.

The NAVI-Mi is really impressive. We have a customer with a Multus U3000 that has the NAVI-Mi. They were using a 1/4 inch end mill sticking out about 1.75 inch to mill down inside a pocket on a part. The programmer set the initial speed at 6000 RPM. The endmill was chattering and the finish was poor. The operator reduced the speed to 3500 RPM to get a good finish but the cycle was slower. we helped them set up the NAVI Mi and it bumped the speed to 6014 RPM's and the finish was great with much shorter time in cut. The software shows you real time signals from the vibration sensor in both time domain and frequency domain. You can zero in on the unwanted frequency components and minimize them to improve cutting performance.