Example gears

[Monafly]

Here is a web site that has models (some quite old) that I'd love to be able to make with Gearotica . From what I've see Art post, some of these are quite doable and some might be a challenge . Some may not be functiona l, but they certainly are artistic.

 http://www.gearlab.org/GearCollections/index.html

Some features in these examples that I haven't seen addressed in Art's demos is whether the gears all have to lie in the same or parallel planes. i.e. Can we have right angle (or non-right angle) bevels? What about hypoid? Worm drives? Crossed helicals?

Looking forward to getting my hands on the program.

Thanks.

[BobL]

Hi;

 Thanks for the post. For the time being Gearotic Motion has most of the gear type you just posted and will eventuall y grow to perhaps include popular missing types requested by registere d users. Of course version upgrades will always be free just as MAch cnc series software or until no interest is noted.

Thanks

[ArtF]

Hi All:

 Here are some examples of a mod 5 spur gear's output folders.
There are 2d dxf's, 3d dxf's, stl and Gcode files included. The program
will also print the gear to size, but I cant seem to figure out how to upload
the paper printouts .....

Art
 

[John S]

Why is the tap file outputtin g in absolute arc mode when the gear zero is 0,0 Most people tend to run in relative arc mode. ?

[ArtF]

John:

  Personal preferanc e .. .If its important I can make it relative. .the programme r in me like absolutes ..

Art

[John S]

The machinist in me likes relative  in fact they are the only relatives I can get on with 

You will always get two camps so who do you please. Some say absolute because everythin g is from one point, some say relative as you can tweak circles in code easier without having to use tool offsets if you are creeping up on say a bearing pocket.

Failing that stick a 9G90.1 in so we don't have to worry about it. 

[ArtF]

Good point, G90.1 it is...

Art

[ArtF]

yeehaw..

 Just cut my first helical gear on the rotary axis. Worked out quite well. Ill try to post a video soon on cutting a helical. Almost looks quite proper...



Art

[John S]

STOP TEASING.. ......... ......... ......... ......... ...

[ArtF]

LOL...

 Sorry,
I get excited when a theory hold up.. Youll like tthe way I did it I think.
(As long as the theory continues to hold.

  Basically, I use the endmill to pocket down to the root, using the base
circle intersect ion of the tooth as the outer limits of the pocket. Then I rotate the blank, while moving the lateral axis outwards to match the evolute curve's point tangental ly with the edge of the tool. This causes the tool to shave the curve into existance . The user sets the segmentat ion
of the shaving.
    Its similar to the method of using a 5 stack of straight fluted cutters as a hob, only with a user selectabl e number of cutters. While you cant have
50 straight cutters in reality, you can with this method as the lateral motion combines with rotary motion to allow any number of segments, and does 1 tooth at a time instead of 5 or so..

  Slow ,maybe though. With 10 segements per tooth edge, it takes about
10 minutes to do a 15 tooth Mod 5 17 degree helical. I would imagine 20
segments takes about 18 minutes. Question is.. how many segments does an involute have to be to work OK? Ill do a video to show it.. :0

Art

[BobL]

Art;

 15 teeth, 10 minutes.. .not bad...  I'll try cutting a 10 and 20 segment involutes to physicall y see the differenc e as soon as I fix my "Y" slave belt drive issue .

Bob

[ArtF]

Hi Guys:

  Here's some photo's of those helical gears when complete. Average tim eis about 15 minutes per gear. Meshing seems very good.


Art

[joemac05]

Example you say....  Try here...   

http://kmoddl.library.cornell.edu/collection-toc.php

Regards,
Joemac

[John S]

4 gears cut today all in 2.5 MOD.

Two 14 teeth and a 13 teeth and a 15 teeth both cut on the 14T blank with corrected tooth forms.

All fit and interchan ge on standard centre pins.

[BobL]

John;
 Gears are looking good ...Thanks for your time and help.

Thanks
Bob