[4]

Making a worm shaft on my mini lathe?

[3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

jlager

Newbie
Registered
Joined
Oct 31, 2018
Messages
4
Likes
1
#1
I just got myself my first lathe, a Grizzly G8688. Did a bunch of reading and made myself a machinist hammer as a learning project which I'm quite happy with how it turned out:

46492602_290413934937357_1580865023708758016_n.jpg

Anyway, my main purpose for getting a lathe is I wanted to be able to make my own car parts as I'm restoring an old car for which I can often not find parts for anymore. One of the first things I would like to try and make is this worm shaft for the speedometer drive that is worn out, if this is something that can even be done on a lathe. This guy right here:

mercedes-g-speedo-drive-w460-w461_3.jpg

Any tips on what I need to be researching for how to make this part? I don't even really know what search terms I should be using.
 

benmychree

John York
H-M Supporter - Gold Member ($25)
Joined
Jun 7, 2013
Messages
2,568
Likes
1,885
#2
That would be done by helical or spiral milling, not on a lathe, the spiral angle is too steep for lathe production.
 

jlager

Newbie
Registered
Joined
Oct 31, 2018
Messages
4
Likes
1
#3
That would be done by helical or spiral milling, not on a lathe, the spiral angle is too steep for lathe production.
That makes sense, thank you! I have a friend with a large Haas CNC mill that I assume would be able to make this?
 

benmychree

John York
H-M Supporter - Gold Member ($25)
Joined
Jun 7, 2013
Messages
2,568
Likes
1,885
#4
That makes sense, thank you! I have a friend with a large Haas CNC mill that I assume would be able to make this?
Possibly, if he has 4th axis capability.
 

lordbeezer

H-M Supporter - Silver Member
H-M Supporter - Silver Member ($10)
Joined
Sep 1, 2018
Messages
46
Likes
34
#5
Modify a ford speedo gear.
 
[6]
[5] [7]
Top