Home made Gear cutting Hobs part4
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Uploader Comments (Hobbynut)
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thanks for posting i learned a lot with it..
2 years ago 3
All Comments (28)
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@kuei1248 I run the lathe forward, but I stand facing the spindle and hold the file out in front of me. My right hand is loosely holding the tip of the file, and the left hand is holding the handle end. If there's no handle, I hold it with my fingertips so that the spike sticks past my hand instead of being aimed at my palm.
I'm holding loosely, so if the file gets grabbed by the lathe, it will be easily pulled out of my hands and thrown away from me.
It's a different method but works so far
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believe you need to find the circular pitch.
CP=Pi(3.1415)/Diametrical Pitch.
to find D.P~25.4/module(.75)=33.8666
Pi/33.8666=.0927
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Please keep posting the results, I don´t have a CNC but if you succeed it´s one more reason for an upgrade. I believe I can make a nice square teeth worm/worm gear pair with your method as well, I already made the hob and worm for it and it´s looking nice.
Thanks!
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maybe you can make a program on your mill to sharpen tools
PLUSHAIRPLANECARPET 1 year ago
@PLUSHAIRPLANECARPET I tried this to sharpen the regular involute cutters but had no luck. It is a good idea. I just didn't fully persue it.
Hobbynut 1 year ago
What is the included angle you have to grind the tool bit to 40 degrees?
Jeff260z 1 year ago
@Jeff260z Yes that is correct the included angle on the tool bit is 40 deg for a 20 deg pressure angle gear.
Hobbynut 1 year ago
Nice video. 1 safety suggestion. When using a file on a lathe spin the chuck in the reverse direction (M4) and hole the file with the handle away from you. Alot of time files grab and the pointed handle can get launched at you, or into the palm of your hand. Should the file be grabbed it will be pulled away from you.
kuei1248 2 years ago 9
@kuei1248 Very good suggestion, thanks. I think that I should also have a handle on the file that would be safer as well.
Hobbynut 2 years ago