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 1 
 on: September 21, 2018, 10:51:03 AM 
Started by JustinO - Last post by JustinO
Hi Kirk,
I think Sherlines are a great value. There is always a glut in the second hand market. Technical schools get grants and buy lots of them, then they are auctioned off when the next grant comes in ten years later. The huge supply, and the interchan geability is great. If you break something or wear it out (I never have), you can buy a replaceme nt easily. The used Sherlines I have bought are worth as much as they were when I bought them. Except for my first machines, I always try to buy Sherline stuff used, and only buy new if the parts I need are unavailab le or expensive on the used market. One thing about CNC is that I have been able to sell some of my accessori es -- radius cutter, threading, and have hugely expanded what I can do:
https://youtu.be/AXiFeOCwV28
--Justin
odhner.co m

 2 
 on: September 20, 2018, 06:00:42 PM 
Started by Matt Whitehouse - Last post by ArtF
Matt:

 It is possible , but not easy. First, youd put all the gears fully toothed
on one shaft in center of program screen. Then youd have to run
Vexx and import each gear using the Gearotic button. They will all
appear as vector art centered at one zero point.

 Then youd have to edit the gears by drawing lines radiating from
center at tooth count swapover points desired and clipping out the
 gear sections you dont want using the scissors.

  Finally, youd group the resultant gear, and extrude it , then save the stl.

 A pain, but quite doable..

Art


 


 3 
 on: September 20, 2018, 03:55:05 PM 
Started by Matt Whitehouse - Last post by Matt Whitehouse
hi,
how do i output an stl for a stepped gear(a gear with multiple tooth counts on different diameters)? is it even possible?
thanks,
matt

 4 
 on: September 19, 2018, 02:21:06 PM 
Started by JustinO - Last post by Mooselake
Impressiv e!

I looked up octoidal bevel gears, and while I still don't understan d the descripti on the Wikipedia bevel gear page has a picture of a double bevel helical gear in case Art gets bored  Smiley

How do you like that CNC Sherline?  I'm thinking that the new southern shop needs a small CNC mill and have been looking at that, a Taig, or maybe a DIY SX2 conversio n (the Delta metal shaper has preempted a new machine up north, it's making chips!).  Like all Mooselab projects it'll take way longer than it should to actually do something

Kirk

 5 
 on: September 17, 2018, 05:54:46 PM 
Started by JustinO - Last post by ArtF
Justin:

   You did well. I guess its like so many other operation s
in more than 2 dimension s, the hardest part is the concept,
gets easier in implement ation..

Art

 6 
 on: September 17, 2018, 03:40:31 PM 
Started by JustinO - Last post by JustinO
Art,
The Gcode is shockingl y simple once you've worked it out, but it feels impossibl e at first.

The hard part is setting up -- getting the rotary axes to intersect, and touching off at that virtual point of intersect ion.

Then there is the minor subject of having to build the machine!

This is a paying job. They're paying decent money, but it is more work than it is worth. It is a nice project, and a worthy cause.
Schanck Observato ry Times
https://www.facebook.com/670361143169824/

I used your software to make wire frames, rotate them around, then photoshop them over the not so good photograp hs of the original gears. It helped to confirm the toothcoun t....

Someday, I'll be able to actually feed myself making gears!

--Justin
odhner.co m

 7 
 on: September 17, 2018, 01:46:40 PM 
Started by JustinO - Last post by ArtF
Well done! The Gcode must have been complex to imagine as it was written..

Art

 8 
 on: September 17, 2018, 01:11:10 PM 
Started by JustinO - Last post by JustinO
This is a short video of a pair of rotary tables rolling a conical blank against a virtual crown gear with an embedded flycutter . If the tooth faces of the virtual crown gear are planer/great circles, the tooth faces of the generated gear will be octoidal.

https://youtu.be/RxRbuPIKu6I

--Justin

 9 
 on: September 11, 2018, 11:04:02 AM 
Started by Mand - Last post by Mand
Weird, are you using Chrome? The link goes to a machinery reseller on the East Coast, and they don't use HTTPS, so some installat ions of Chrome may stop you from going there (I mean, if it's been set to avoid non-HTTPS sites as being a security risk).

Alternati vely, then, there are several listed on eBay at the moment (some for staggerin g sums); if you search for "rounding up tool" you'll find most of them (folks seem to list these using varying phrases, some wrong, so they can occasiona lly be found hiding under other search terms. I've seen at least one described as being a lathe, for example.)

 10 
 on: September 11, 2018, 08:38:31 AM 
Started by Mand - Last post by BobL
Thanks for the info Mand,  however I'm unable to connect to link..  http://goldmachinery.com/?s=rounding+up+tool 
 
 Anyhow, Until a few days ago, I was oblivious to how this tool really worked, so thanks for sharing.


Cheers
Bob
 Cheesy

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