Grid couplings

DeSelle

Cast Iron

Joined

Oct 23, 2006

Location

Midlothian, TX

• Nov 2, 2016

• #1

Does anyone know what process is used to make the teeth on grid couplings? Looking at the I assumed it was wire EDM but someone suggested machining. Just a curiosity for me.

Thanks for any info

Nathan

 

sfriedberg

Diamond

Joined

Oct 14, 2010

Location

Oregon, USA

• Nov 3, 2016

• #2

Got a picture? I'm not familiar with "grid coupling" outside of tube electronics!

 

I

IronReb

Stainless

Joined

May 26, 2011

Location

Shreveport/Louisiana USA

• Nov 3, 2016

• #3

grid coupling - Bing images

 

JRIowa

Diamond

Joined

May 27, 2003

Location

Marshalltown, Iowa, USA

• Nov 3, 2016

• #4

Probably numerous ways, but if you have the volume, a pot broach would be the most cost effective. If you don't have the volume, use a slotting cutter on a mill.

As many couplers as they make, I'd bet you $0.05 that they broach after turning the OD so they have a locating surface. You're looking at seconds for cycle time.
JR

 

A

atomarc

Diamond

Joined

Mar 16, 2009

Location

Eureka, CA

• Nov 3, 2016

• #5

I've worked with quite a few Falk brand couplings and they certainly appeared to have been machined, not cut with EDM.

Stuart

 

J

James H Clark

Stainless

Joined

May 11, 2011

Location

southern in.

• Nov 3, 2016

• #6

I'm not sure, but I always thought that some of them appeared to be sintered metal. I've bored a boxcar full, but never really dug into it.

JH

 

M

ManualEd

Stainless

Joined

Oct 13, 2014

Location

Kelowna, Canada

• Nov 3, 2016

• #7

James H Clark said:

I'm not sure, but I always thought that some of them appeared to be sintered metal. I've bored a boxcar full, but never really dug into it.

JH

Click to expand...

The outer housing is usually pot metal.

The inside hubs are a proper steel. Machines very well.

I always assumed they were just hobbed like a straight tooth gear.

 

sfriedberg

Diamond

Joined

Oct 14, 2010

Location

Oregon, USA

• Nov 3, 2016

• #8

IronReb said:

grid coupling - Bing images

Click to expand...

Thank you, Iron Reb.

 

P

petersen

Cast Iron

Joined

Dec 13, 2008

Location

minnesota

• Nov 3, 2016

• #9

It is more complex than EDM or broaching.

The driving surfaces are curved and tapered for flexure characteristics.

Click on the images IronReb offered.

Then click the "steelflex" heading and scroll down.

Near the bottom there are diagrams that show this.

( I must try to learn how to post "links")

petersen

 

DeSelle

Cast Iron

Joined

Oct 23, 2006

Location

Midlothian, TX

• Nov 3, 2016

• #10

That's what has been puzzling me. The geometry is complicated but the finish on the ones I see is poor so maybe multiple passes with a thin milling saw of sorts?

 

TeachMePlease

Diamond

Joined

Feb 11, 2014

Location

FL

• Nov 4, 2016

• #11

petersen said:

It is more complex than EDM or broaching.

The driving surfaces are curved and tapered for flexure characteristics.

Click on the images IronReb offered.

Then click the "steelflex" heading and scroll down.

Near the bottom there are diagrams that show this.

( I must try to learn how to post "links")

petersen

Click to expand...

How to post a link: Either Click the button that looks like a globe with a chain link next to it, or, if your link was to Google you could simply type THIS IS MY DESCRIPTION OF MY LINK[/url*] without the * in the HTML tags.

 

H

Heavey Metal

Banned

Joined

May 10, 2011

Location

Texas

• Nov 4, 2016

• #12

They look like powdered metal to me