What's new
What's new
By:
Advanced search…

Linear shafting threading

S

Streak

Plastic
Joined
Aug 16, 2021
Hello, I’m making linear shafts that I will attach to a block, I want them to be fully attached and straight. I’ve seen shafts that’s only partially threaded, which I think will prevent the shaft from being fully attached?



So in order to accomplish what I want, they have to be completely threaded?
 
You don't use the threads to align the shafts. You use a precise pilot bore with a suitable depth and fit for alignment before the threads and enough threads at the end to hold it together.
 
If I thread the whole portion of the shafts, and completely screw them down into the holes, will the wall/face of the shafts against the block align the shafts straight?

Like this:
 
Streak said:
If I thread the whole portion of the shafts, and completely screw them down into the holes, will the wall/face of the shaft against the block align the shafts straight?

Like this: RHJU-4467-432FGYTF-5432 — ImgBB
Click to expand...
5

Yes, provided the shoulder on the shaft is perfectly square with the centerline and there are no chip, swarf, thread irregularities or other defects to prevent good contact.
 
Streak said:
If I thread the whole portion of the shafts, and completely screw them down into the holes, will the wall/face of the shafts against the block align the shafts straight?

Like this:
Click to expand...

That appears to be a 2 piece assembly, not a "threaded all the way" piece.

But your a machinist, make them however you want.
 
The shoulder can provide a "relatively" accurate alignment of the shaft to make it perpendicular to the seating face....conditions as noted above by TGT....
That arrangement will not however give accurate location as to position....Tapped holes and threads generally will not give good repeatable position location...
A counter bore that is bored to fit the OD of your pins would be better...

Cheers Ross
 
You must log in or register to reply here.

Similar threads

Mr Pugsley
Advice for lapping a linear shaft
Replies
7
Views
520
Mr Pugsley
Mr Pugsley
Doozer
Making a shaft from D2 - What to look out for ?
Replies
13
Views
635
Doozer
Doozer
H
  • Locked
Request for Help with Custom Lathe Headstock
2
Replies
27
Views
1K
eKretz
eKretz
M
Suggestion on Straightening Shaft After Hardening
Replies
10
Views
953
tylersteez
T
C
Felt Seal for Lathe Input Shaft
Replies
5
Views
453
rons
rons








 

ABOUT PRACTICAL MACHINIST

With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. Register for the world’s largest manufacturing technology forum for free today to stay in the know.

Learn more about us.

STAY CONNECTED

Facebook Instagram YouTube LinkedIn Pinterest Twitter Tiktok

Register Become a forum member. Register today.

Sign Up Sign up for our e-newsletter.

© 2024 Copyright Practicalmachinist.com. All Rights reserved.

Back
Top