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The CNC machine I had the problem with was a small Milltronics vertical with a PC based control. The CNC machine had been having a lot of unexplainable problems and alarms. They had swapped servo motors, spindle drives and more. Being that the alarms were far and in-between and inconsistent I decided to inspect the grounding of the machine.

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On Fanuc 16, 18, 21 controls in order to allow a larger wear offset to be entered in for your tools and change the maximum amount that can be added at one time change Parameters 5013 and 5014.

Here is the picture of a typical lube metering manifold on cnc machine tools . These are used for ballscrews ways and more.  Here is a description on how these work. Many people do not understand this concept.

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The CNC Machine was Kitamura Mycenter 2 with a Fanuc O-M control. Everytime the machine X-axis is Zero returned the axis alarms with a 090 fanuc reference return incomplete alarm.

Here is what I checked first

1. Checked the disgnostic for home switch
2. Adjusted the gridshift value lower and higher to test
3. Cleaned the home switch to make sure it was free and dropped off of the dog immediatly
4. Checked encoder connectors for coolant contamination
5. Checked connections on Drive
6. Swapped encoders between X and Y axis

Upon arrival the spindle was back together. When attempting to orient the spindle I found that the spindle would slow down then take off for another revolution and keep attempting to find home. This type of spindle had a magnetic type block shaped device bolted onto the spindle with a stationary sensor on it. Being that it was a 15 M control all orientaton pots were on the spindle drive. The customer had palyed with the pots to try adjusting with no luck. They had tried swapping the magnetic pickup around but still did not work properly.

Resolution to problem

Problem: Alarm 1006 turret number incorrect on a Yang ML-15A lathe with a fanuc O-T control

The alarm was on Y-axis. After staying powered on for about 10minutes machine not even running a Y-axis Excess error and tack generator alarm on a Fanuc O-M control would occur. The drive also showed these LED alarms on them though after testing several times. somtimes only one oe the other LED would be on.

Checked all connections. Looked for maybe a heat problem. Left the cabinet doors open checked fans and connections.

CNC problem resolution

Personal background
Well for my first blog post I would like to tell you a little about myself. I will start with my family since that’s most important in my life. Currently I am Living in the Midwest area in Watertown Wisconsin. I