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PCB Drilling Process Failure and Solution (1)

Published by admin September 24,2021

    PCB Drilling Process Failure and Solution (1)


Drilling is an important process in PCB process. It looks simple, but actually it is very critical process.

and many reasons can cause the  defective drilling, machine,human,drill bit, backup board,entry etc....

Today,we will Analysis the factors cause the drill bit broken

 

     Problem                                                          

       Reason                                                                                                         

                           solutions               

Drill bit broken Spindle run-out too big Check and repair the spindle or change a new spindle 
Drill bit broken Improper operation when drilling 

Check if the air pipe of the presure foot  cup block

adjust the pressure foot cup pressure according to the drill bit 

check if there is any cooper wire inside the collet 

Check the parallelism and stability of drilling table

Drill bit broken density of the backup board problemtest Test the density of the backup board.use high density backup board
Drill bit broken

There are sundries between the board

When nailing board, clean the debris between the        board
Drill bit broken drill bit not suitable choose the suitable drill bit for different board             
Drill bit broken The speed of the drill is insufficient and the feed rate is too high

Select the appropriate feeding and reduce the feed rate

Drill bit broken  There are too many layers Reduce to an appropriate number of layers
Drill bit broken Drill bit grinding  too much or the drilling  life is exceeded Controlled the grinding times ,normally not more than 5 times                                                                     
Drill bit broken entry cockle,backup board Bending Select suitable surface hardness, flat entry and backup board 
Drill bit broken The centerness of the welding drill tip is deviated from the center of the drill shank use the the overall tungsten carbide drill bit 

 

From this form ,we know you should chose the suitable drill bit, backup board, Al entry and use the right way to make sure

your drilling preocess running smoothly .