[micromillnick]

hi all,

i need/want to make a couple of gears (big tooth small dia) so i can make a HP gear pump, the machine can do it i dont doubt and autocad can draw it so thats no problem, what i need is some way of inputting the right tooth form into autocad. I only need a two dimensional representation as i plan to cut out the gears i need from plate.
Thanks in advance.

Nick

[braidmeister]

http://www.cadopolis.com/prodCWD-Gear.asp

http://sofengsvc.com/#gearpack

Bobcad will also do gears...

-Brady

[micromillnick]

thanks mate, i'll give those a go tomorrow! :cheers:

Nick

[micromillnick]

ok had a play with those programs, unfortunatly one runs in dos which my XP machine doesnt like and the other is not compatable with my very old version of autocad (R14) so its back to the drawing board :-(

nick

[duluthboat]

FeatureCam has a great little pull down for gears. If you supply the required information I’ll send you the profile in a R14 dwg file.

[micromillnick]

very kind of you, i basically want a large toothed gear of relatively small diameter im thinking about 20mm dia with just perhaps 6 teeth. the reason for this is i want to make a gear pump. I did find a natty little LSP for gears on the web called GEAR.LSP but it will only let me do a minimum of 14 teeth at that size, which i guess will still work but perhaps at a lesser volume per given speed.
The Spindle size would be a convenient at 6-10mm, pressure angle etc is not critical as its job is to pump.
thanks again

Nick

[duluthboat]

Just one gear, or will there be two that will mesh.

[micromillnick]

just one really, i plan to make two the same then they can mesh together.
Thanks again!

Nick

PS Feature Cam sound very useful, is it expensive?

[oldjohn]

G'day
Do you have an address where I can send you a Mastercam file of a 6T 20 OD. You can then wirecut it. Icannot send an attachment. The format is not compatible.
John

[micromillnick]

thanks john,
its
pulseweld-at-dsl.pipex.com
(apologies for the long hand ,ive used the -at- instead of @ so i dont get spammed)

Nick

[duluthboat]

Looks like oldjohn has got it. Let us know if you need more help.

[oldjohn]

Hi micromillnick
I sent two emails to you, one with -@- was returned to me. then I sent one wiith @ I don't know if you got it. It hasn't come back. tell me if you got it.
John

[oldjohn]

I think this will work
Good luck
John

[oldjohn]

G'day.
In order to keep this thread open to all CNC Zone members and informed of what's been going on with our Private emails I am posting this:

---- Original Message -----
From:
To:
Sent: Tuesday, June 21, 2005 7:27 PM
Subject: Gear 6T

Here it goes. Let me know if you get it.
john

"ok i have the file but i dont have Mastercam, will it open as a text file so i can use the gcode?
Nick
----- Original Message -----
From:
To:
Sent: Tuesday, June 21, 2005 7:27 PM
Subject: Gear 6T

Here it goes. Let me know if you get it.
john

What if I sent you the G-code With G40= CC off and you do whatever you need to do?
John

micromillnick Please open the attachment and find the G-code for geart6 Using no CC.
Please reply
John
micromillnick

[micromillnick]

Hi John,
i got the attachment ok, im going to be tied up with work now untill tuesday next but i will try it as soon as i ma "unyoked" from the daily crust earning :-)
many thanks for all your help, i will let you know how it went as soon as i can.
cheers
Nick

[oldjohn]

You are wellcome. Any time mate.
John

[gcz]

maybe try this:
http://www.dakeng.com/spurgear.html

[mmech]

will you be using a cnc mill or an edmn machine to cut the gears? that cadopolis program looks neat.