Gear cutting

[john brown 17Participant @johnbrown17]

When cutting gears,is it best to round a couple of times to get the depth or in one pass ,they are 48 dp gears ,in brass .

john

[john brown 17Participant @johnbrown17]

[JasonBModerator @jasonb]

1 pass as they are fine teeth in an easy to cut material. Even for larger teeth it is best to do in one go if your setup can handle it.

[Anonymous]

I agree with JB, it's a waste of time going round twice. The only thing you achieve is to wear the cutter. This a is 5DP gear in cast iron cut in one pass:

I'll admit that the setup is pretty rigid; the mill didn't even break sweat when the cut was applied.

For larger gears, say 1 or 2DP, then two passes were often used. One used to be able to get roughing cutters for these, and larger, size gears.

Andrew

[Phil PParticipant @philp]

If you are going to take two passes, then why not use an appropriate thickness slitting saw to remove the bulk of the metal, then use your expensive gear cutting tool to finish the profile.

I did an internal gear with 240 teeth using a single point tool on a slotting head, but I went round and drilled out the material where the teeth were going to be first so i reduced the risk of blunting the cutter half way round.

Phil

[Author]

Posts