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   Meet the Author  
 

Meet the Author of "The CNC ToolBox"

 
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Hello, my name is Daniel D. Nelson, author of "The CNC ToolBox, Top service for machine tools."

The metalworking industry relies on top CNC service.

 
 
  A crowd develops at the end of a service call, everyone wants to see if their CNC machine was really fixed and running again - to hear first hand the elusive results of a long standing service where a problem would happen for an instant every 4 to 8 hours.

How could a loose wire on the tool clamp confirmation limit switch, fifteen feet up above the spindle draw bar cylinder, cause damage to a thread hobbing tool insert, once every 4 to 8 hours?

In the final analysis, the hobbing operation created heavy vibration which opened the switch circuit.  The unexpected dropped switch signal triggered the CNC ladder sequence to command a change in the spindle rpm, which would then damage the expensive hobbing tool working the material. The unexpected change in spindle rpm also caused a sharp vibration that would coincidentally re-seat the loose switch wire for another 4 to 8 hours of running.  Moving the plastic insulator that was pinched in the switch connection screw solved the problem.  Finding the problem took a while using test equipment, diagnostics and a fair amount of patience.

I have spent 21 years solving some of the toughest service problems at thousands of the best machine shops in North America. On the job, we apply a set of standard techniques to solve complex service problems.  Please use these basic guidelines to gauge the results of your next service visit.

Thank You and Best Regards,

Daniel D. Nelson

The CNC Toolbox
 

The CNC ToolBox

by Nelson, Daniel D.
Description: Analysis of factory performed service jobs. Suitable for shop floors and factory experts alike.
 
Add to your bookshelf! ISBN 0965431479

 
 
CNC ToolBox

 
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