Another tapping problem. (burrs)
Another tapping problem. (burrs)
(OP)
I've got a 55 mm circular part, notched on the OD in 4 places, with a 40.6 mm hole threw the middle. The hole requires a M42 x 1.5 D9 thread. The tap I tested is 6 flute (straight), TiN coated.
I may be running about 100 RPMs fast as the machine only has two speeds.
I keep getting a rather large burr (0.5mm-0.8mm or so) on the bottom of the part when the tap comes threw. The part has a 0.8 mm chamfer on each side before tapping.
Any suggestions are appreciated. Thanks.
I may be running about 100 RPMs fast as the machine only has two speeds.
I keep getting a rather large burr (0.5mm-0.8mm or so) on the bottom of the part when the tap comes threw. The part has a 0.8 mm chamfer on each side before tapping.
Any suggestions are appreciated. Thanks.





RE: Another tapping problem. (burrs)
RE: Another tapping problem. (burrs)
RE: Another tapping problem. (burrs)
What is rotating at 100 rpm?
Regards,
Cory
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RE: Another tapping problem. (burrs)
RE: Another tapping problem. (burrs)
Are you sure the burr isn't there after drilling/chamfering?
Regards,
Cory
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: Another tapping problem. (burrs)
Actually, I havent checked for a burr after chamfer. I'll look into it next time I run a trial. (prob Monday) We currently run 3 other similar parts on this machine with diameters from 32-36mm though.
The center hole is stamped out, so there is a little burr on one side. That burr side is the one that gets chamfered though.
Thanks
RE: Another tapping problem. (burrs)
RE: Another tapping problem. (burrs)
What are the advantages to spiral flute? Chip removal?
RE: Another tapping problem. (burrs)