Patent ID: 11919113
Assignee: CHANGZHOU ELECTROMECHANICAL VOCATIONAL AND TECHNICAL COLLEGE
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 1:
2. The method for diagnosing health of a CNC machine tool of claim 1, wherein in step 1, vibration signal AD conversion sampling frequency fc of the vibration sensor node is set to different values according to the change of the health degree:, f
        c
      
      =
      
        
          f
          0
        
        N
      
    
    ;
  

  
    N
    =
    
      {
      
        
          
            
              
                N
                0
              
            
            
              
                J
                ≥
                0.5
              
            
          
          
            
              
                2
                ⁢
                
                  N
                  0
                
              
            
            
              
                J
                <
                0.5
              
            
          
        
        ;
      
    
  

wherein fc vibration signal AD conversion sampling frequency;
f0: crystal oscillator frequency;
N: frequency dividing ratio of variable frequency divider; and
N0: reference value of frequency dividing ratio.