AlexBrown_1
Member
- Messages
- 161
- Location
- Cheshire UK
Hi all,
Hoping someone more knowledgeable will be able to point me in the right direction with this.
I'm starting to mess about with the gear cutters I was generously sold on here not too long ago, but I'm really struggling with them.
I'm cutting a blank about 12mm or so thick of mild steel, and I don't know the exact rpm but it's a fairly medium speed, sort of speed I would use for a 40-50mm end mill at a slow feed rate.
The first two or three teeth cut okay, going pretty slow and steady, but then I noticed the cutter was starting to burr on one side and now it won't cut without jamming and the taper on the horizontal shaft coming free.
I did try a slower speed but that jammed immediately, and I could try a higher speed but they have a tendency to trip the garage fuse!
I'm constantly flushing the cutting surface with a coolant, not exactly flooding but liberally spraying with a spray bottle.
Any ideas of what you good folk would try? Is there a trick with these involute cutters that I missed while doing research? I'll admit the folks on YouTube make it look very easy, and I suppose I could calculate my speeds properly but I don't have one of the doohickeys to do that and the gearbox is confusing at best.
Should I be sharpening older cutters before use? These seemed like they were in very good nick to me, used but without any obvious signs of a lot of wear
Hoping someone more knowledgeable will be able to point me in the right direction with this.
I'm starting to mess about with the gear cutters I was generously sold on here not too long ago, but I'm really struggling with them.
I'm cutting a blank about 12mm or so thick of mild steel, and I don't know the exact rpm but it's a fairly medium speed, sort of speed I would use for a 40-50mm end mill at a slow feed rate.
The first two or three teeth cut okay, going pretty slow and steady, but then I noticed the cutter was starting to burr on one side and now it won't cut without jamming and the taper on the horizontal shaft coming free.
I did try a slower speed but that jammed immediately, and I could try a higher speed but they have a tendency to trip the garage fuse!
I'm constantly flushing the cutting surface with a coolant, not exactly flooding but liberally spraying with a spray bottle.
Any ideas of what you good folk would try? Is there a trick with these involute cutters that I missed while doing research? I'll admit the folks on YouTube make it look very easy, and I suppose I could calculate my speeds properly but I don't have one of the doohickeys to do that and the gearbox is confusing at best.
Should I be sharpening older cutters before use? These seemed like they were in very good nick to me, used but without any obvious signs of a lot of wear
