The situation that swarf remains in the slot of the printed circuit board or back up board after routing.
no swarf clogging
swarf clogging
| Cause | Failure condition | Countermeasure |
|---|---|---|
| Small chip pocket. | Because the flow of the swarf is not smooth, swarf clogs easily. | Enlarge the chip pocket volume of the router (change web thickness, flute depth, number of flute, etc.). |
| Short flute length. | The flow of the swarf is not smooth near the end of the flute. Swarf clogs easily. | Use the router with longer flutes than the whole height of the boards. |
| Small helix angle. | Because the swarf is not lifted up smoothly, swarf clogs easily. | Use a router with large helix angle. |
| Heavy wear. | When the wear is increased, the cutting force and cutting heat are also increase, then the swarf is soften and clogs easily. | Change to the new router. |
| Cause | Failure condition | Countermeasure |
|---|---|---|
| Low spindle speed. | Because the force to lift swarf becomes weak, the flow of the swarf becomes worse. Then swarf clogs easily. | Increase spindle speed. |
| High spindle speed, slow feed rate. | When the wear is increased, the cutting force and cutting heat are also increase, then the swarf is soften and clogs easily. | Reduce spindle speed and increase feed rate (unless breakage is not happened). |
| Cause | Failure condition | Countermeasure |
|---|---|---|
| Performance of the dust catcher falls off. | Because vacuum power becomes weak, swarf clogs easily. | Clean the dust catcher. |
| Wear of the brush of the pressure foot. | When the brush is worn, vacuum power become weak. Then swarf clogs easily. | Change the brush of the pressure foot. |
PRODUCT 01 PCB Drills / Routers / Ultra precision micro-hole drill
