implmex
Diamond
- Joined
- Jun 23, 2002
- Location
- Vancouver BC Canada
Hi All:
I'm too cheap to blow a thousand bucks on a cut knurling tool. so I've been experimenting with knocking one together myself.
I have a question...which part of the knurl is supposed to contact the workpiece to achieve the correct cutting action.
I've tried canting the knurls so the leading edge is presented to the workpiece first...seems to cut really well.
I've also presented he knurls to the work so the mid-face of the knurls contacts the workpiece and the leading and trailing edges are clear of the work.
This still makes a great looking knurl, but the side pressure goes way up and it acts more like bump knurling, so this can't be right.
Presenting the knurls to the work so the trailing edge contacts first cuts really aggressively on the backstroke (toward the tailstock) but far less so feeding toward the headstock, when it acts more like a bump knurl.
So it seems to me that the leading edge should contact first and cut.
So how do you knurl small diameters if this is true???
The knurls are so far apart at the leading edge that I don't think I could knurl anything smaller than about 3/4" diameter.
Smaller knurls??
Any advice will be gratefully accepted.
Cheers
Marcus
I'm too cheap to blow a thousand bucks on a cut knurling tool. so I've been experimenting with knocking one together myself.
I have a question...which part of the knurl is supposed to contact the workpiece to achieve the correct cutting action.
I've tried canting the knurls so the leading edge is presented to the workpiece first...seems to cut really well.
I've also presented he knurls to the work so the mid-face of the knurls contacts the workpiece and the leading and trailing edges are clear of the work.
This still makes a great looking knurl, but the side pressure goes way up and it acts more like bump knurling, so this can't be right.
Presenting the knurls to the work so the trailing edge contacts first cuts really aggressively on the backstroke (toward the tailstock) but far less so feeding toward the headstock, when it acts more like a bump knurl.
So it seems to me that the leading edge should contact first and cut.
So how do you knurl small diameters if this is true???
The knurls are so far apart at the leading edge that I don't think I could knurl anything smaller than about 3/4" diameter.
Smaller knurls??
Any advice will be gratefully accepted.
Cheers
Marcus