GearHeads Corner
October 20, 2014, 03:05:35 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Search Login Register  
Pages: [1]
  Print  
Author Topic: escapement wheel design  (Read 509 times)
0 Members and 1 Guest are viewing this topic.
Tak
Newbie
*
Posts: 12


View Profile
« on: January 22, 2012, 06:11:50 PM »

Hi,everyone
I started my first project making a gear clock with GM.
So far I have cut all the gears except escapemen t wheel.
The escapemen t wheel has 60 teeth and I set module 3.0 which makes the wheel diameter 180mm.
I tried to cut this few times on my cnc router with different settings but no success.
Simply the teeth is too fine for the plywood.
I tried to set the parameter s to change the shape to make the teeth good enough for cutting out of plywood.
So far I couldn't get the shape I wanted.
Is any solution for this?

PS sorry for my bloody English as I grown up in non English backgroun d.
Logged
ArtF
Administrator
Hero Member
*****
Posts: 2634



View Profile
« Reply #1 on: January 22, 2012, 11:41:26 PM »

Hi:

  Try increasin g your witness ratio on the screen. It makes the teeth thicker.. Also, if using plywood, make sure its russian birch, its the only plywood I know of with no internal gaps that make small plywood teeth break..

Art
Logged

Thanks, have fun,
Art
Brian Decker
Newbie
*
Posts: 39



View Profile
« Reply #2 on: January 23, 2012, 06:37:10 AM »

Agree 100% with Art - I've got 4 of the GM escapemen ts running now and they are all 3/8ths Baltic Birch.  The teeth are holding up fine - though I think for a long-lasting clock some thought needs to be given to the going train so the teeth are not bearing too much force.
Logged

"If you don't bleed on it, how do you prove that it is yours?"
Tak
Newbie
*
Posts: 12


View Profile
« Reply #3 on: January 23, 2012, 09:57:09 PM »

Thanks Art
I'll try and come back later.

Hi Brian
Would you mind sharing your parameter of the escapemen t wheel setting please.
Logged
Brian Decker
Newbie
*
Posts: 39



View Profile
« Reply #4 on: January 24, 2012, 06:37:52 AM »

Sure - it's basically the stock setting with the shafts changed to 1/2" -

MOD: 6.3500  DP: 4.00 Teeth: 30.00 Pressure Angle: 20.00
Pitch Diam: 7.5000  Outside Radius: 3.7500
Cycloidic: 0  Shift: 0.00 Stubbing: 1.00 Width: 0.50
Logged

"If you don't bleed on it, how do you prove that it is yours?"
Tak
Newbie
*
Posts: 12


View Profile
« Reply #5 on: January 24, 2012, 04:47:04 PM »

Thanks Brian
I'll try yours first.








Sure - it's basically the stock setting with the shafts changed to 1/2" -

MOD: 6.3500  DP: 4.00 Teeth: 30.00 Pressure Angle: 20.00
Pitch Diam: 7.5000  Outside Radius: 3.7500
Cycloidic: 0  Shift: 0.00 Stubbing: 1.00 Width: 0.50

Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!