Hi all,
I am making a stepper CNC primarily for drilling holes in a PCB.I would be using 7kg.cm steppers for axis drive.
So I have 3 questions :
1) I have one of these spindle motors from AliExp :
https://www.aliexpress.com/item/775-...27424c4d5JkJyS
The runout of the outer body of the chuck with respect to the motor body is 0.01mm. But the runout of the drill shank with respect to the motor body is about 0.11mm or so.Can anyone advise if this is acceptable or the collet quality is bad.
2) During PCB drilling,when we do tool change does the machine lose its reference because of the mechanical force applied to open the collet ? What is the experience of the people here?
3) The most stupid question . For my application would a 7kg.cm stepper be suitable ?It mostly positioning ,with a few application for routing/scoring in PCBs.
Cheers!
Thomas