Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Machining

SFT Search:   
Reply
 
Thread Tools Display Modes
  #31  
Old 11-19-2021, 12:32 AM
arizonian's Avatar
arizonian arizonian is offline
Elite Member
 
Join Date: Jul 2007
Location: Tucson, Arizona
Posts: 1,933
Default

Quote:
Originally Posted by Ironman View Post
No, I was referring to the total OD diameter.
OD = (N +2) * module, so (51+2) * 2 = 106 mm.

106/25.4 = 4.1732, carrying 4 decimal places. Almost exactly what you have.

A DP of 12:

OD = (N +2) / DP = 53/12 = 4.4167 inches, so clearly you are in modules (metric).

There is no metric equivalent for degrees, a degree is a degree (that I know of). PA is PA.
__________________
Bill in sunny Tucson

I believe in gun control.

Gun Control: The ability to consistently hit what you are aiming at.

Weldor by choice, engineer by necessity.

Last edited by arizonian; 11-19-2021 at 12:37 AM.
Reply With Quote
  #32  
Old 11-19-2021, 10:51 AM
Ironman's Avatar
Ironman Ironman is offline
Iron Modification Investigator
 
Join Date: Feb 2008
Location: Warburg, Alberta, Canada
Posts: 16,697
Default

Quote:
Originally Posted by GWIZ View Post
my post, #24 shows 4.416 for the outside diameter.
check the width of one tooth (widest width) and let us know the dim.
both gears, its mate.
I will post the numbers for you later today, thanks Gwiz
__________________
Gerry
You got freedom of speech, if you don't say too much.
Aaron Neville.

When a liberal screams racism, you can bet they were also born with white skin.

The countries whom the gods would destroy they first make green. Rex Murphy
Reply With Quote
  #33  
Old 11-19-2021, 11:11 AM
camdigger's Avatar
camdigger camdigger is offline
Roving Reporter
 
Join Date: Aug 2008
Location: Central Oilberta
Posts: 4,201
Default

This will likely give everyone here the heebeejeebees, but when I needed a NLA pinion gear for a WW II Hiebert lathe, I freehand ground a single point HSS to match the profile of the best teeth left on the gear and set up to cut the gear in my round column mill. I did gash the teeth with a slitting saw first to reduce the load on the profile cutter first.

The blanks were flame cut out of 1" plate material and cleaned up using the patient after prepping withan angle grinder.
__________________
Design to 0.001", measure to 1/32", cut with an axe, grind to fit..
Reply With Quote
  #34  
Old 11-19-2021, 02:23 PM
LKeithR's Avatar
LKeithR LKeithR is offline
Hey...wait...is there a prize?
 
Join Date: Aug 2011
Location: Langley, B.C.
Posts: 5,638
Default

Quote:
Originally Posted by camdigger View Post
This will likely give everyone here the heebeejeebees, but when I needed a NLA pinion gear for a WW II Hiebert lathe, I freehand ground a single point HSS to match the profile of the best teeth left on the gear and set up to cut the gear in my round column mill. I did gash the teeth with a slitting saw first to reduce the load on the profile cutter first.

The blanks were flame cut out of 1" plate material and cleaned up using the patient after prepping withan angle grinder.
Now that's what I call: "Git 'er done!"
__________________
Keith

Measure twice and cut once...or...wait, was that the other way around?
Reply With Quote
  #35  
Old 11-19-2021, 05:28 PM
Norm W's Avatar
Norm W Norm W is offline
Elite Member
 
Join Date: May 2006
Location: Syracuse, NY
Posts: 3,023
Default

You could do it quick and dirty. I needed a worm gear to replace a worn out delrin gear. I single pointed it using the worn gear to index the new one.
Attached Thumbnails
Click image for larger version

Name:	DSCF0271.jpg
Views:	65
Size:	191.4 KB
ID:	162613  
__________________
Make over, make do, or do without

Why do I have to press one for English when you're just gonna transfer me to someone I can't understand anyway?

Grant me the strength to accept the things I cannot change, the courage to change the things I can & the friends to post my bail when I finally snap!
Reply With Quote
  #36  
Old 11-19-2021, 06:21 PM
Ironman's Avatar
Ironman Ironman is offline
Iron Modification Investigator
 
Join Date: Feb 2008
Location: Warburg, Alberta, Canada
Posts: 16,697
Default

Quote:
Originally Posted by Ironman View Post
I will post the numbers for you later today, thanks Gwiz
Here we are:

51 tooth gear - driven
OD 4.171 I.D. tooth root 3.8025
Depth of tooth .1685
Width of tooth .1720

16 tooth gear - driver
O.D. 1.4215
Depth of tooth .1765
Width of tooth .1395

The measurement of the 16 tooth is a bit in doubt. I would have to press it off the shaft to get real accurate. It is the best I could do with a caliper. On the 51 tooth, it is already off and so od - id /2 = .18425 for tooth depth, yet I get .1715 for depth as the caliper has to be angled so the tang hits bottom.
__________________
Gerry
You got freedom of speech, if you don't say too much.
Aaron Neville.

When a liberal screams racism, you can bet they were also born with white skin.

The countries whom the gods would destroy they first make green. Rex Murphy
Reply With Quote
  #37  
Old 11-19-2021, 06:31 PM
Ironman's Avatar
Ironman Ironman is offline
Iron Modification Investigator
 
Join Date: Feb 2008
Location: Warburg, Alberta, Canada
Posts: 16,697
Default

Quote:
Originally Posted by Norm W View Post
You could do it quick and dirty. I needed a worm gear to replace a worn out delrin gear. I single pointed it using the worn gear to index the new one.
Yeah, I could do it like that, but I do have the proper equipment, and I would like to use it.
__________________
Gerry
You got freedom of speech, if you don't say too much.
Aaron Neville.

When a liberal screams racism, you can bet they were also born with white skin.

The countries whom the gods would destroy they first make green. Rex Murphy
Reply With Quote
  #38  
Old 11-19-2021, 07:38 PM
arizonian's Avatar
arizonian arizonian is offline
Elite Member
 
Join Date: Jul 2007
Location: Tucson, Arizona
Posts: 1,933
Default

Not to rain on your parade, the cutter I needed and ordered came today. Shipped out of NJ, ordered two weeks ago.

Wholesale Tool in Tulsa OK 1-800-331-4075. They are nationwide, warehouses all over the country. Don't know why it took so long, don't care now.
__________________
Bill in sunny Tucson

I believe in gun control.

Gun Control: The ability to consistently hit what you are aiming at.

Weldor by choice, engineer by necessity.
Reply With Quote
  #39  
Old 11-22-2021, 07:51 PM
Ironman's Avatar
Ironman Ironman is offline
Iron Modification Investigator
 
Join Date: Feb 2008
Location: Warburg, Alberta, Canada
Posts: 16,697
Default

Quote:
Originally Posted by arizonian View Post
Not to rain on your parade, the cutter I needed and ordered came today. Shipped out of NJ, ordered two weeks ago.

Wholesale Tool in Tulsa OK 1-800-331-4075. They are nationwide, warehouses all over the country. Don't know why it took so long, don't care now.
Well, today with the help of the brain trust, and a metric gear profile chart to verify it, I ordered a set of Mod 2, 20 pitch cutters from #1 to #8.
As they are in 乐清市, 浙江省, China....it will take about 3 times as long as your cutters did to arrive
__________________
Gerry
You got freedom of speech, if you don't say too much.
Aaron Neville.

When a liberal screams racism, you can bet they were also born with white skin.

The countries whom the gods would destroy they first make green. Rex Murphy
Reply With Quote
  #40  
Old 11-23-2021, 08:51 AM
camdigger's Avatar
camdigger camdigger is offline
Roving Reporter
 
Join Date: Aug 2008
Location: Central Oilberta
Posts: 4,201
Default

Quote:
Originally Posted by Ironman View Post
Well, today with the help of the brain trust, and a metric gear profile chart to verify it, I ordered a set of Mod 2, 20 pitch cutters from #1 to #8.
As they are in 乐清市, 浙江省, China....it will take about 3 times as long as your cutters did to arrive
Think they'll have the roads in BC open by the time they get here?
__________________
Design to 0.001", measure to 1/32", cut with an axe, grind to fit..
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Web Search:

All times are GMT -5. The time now is 04:14 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.