MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > Archives
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Closed Thread
 
Thread Tools
  #1  
Old Fri 13 April 2007, 18:28
Pierre GRAND
Just call me:
 
"High tech" Rack and pinions Nexengroup

Hi guys,

I just would like to share this product web site for
hightech racks and pinions solution.I think the price of these products is far from v-rollers and rails best and low cost solution from Gerald?

http://www.nexengroup.com/nexen/jsp/...tions/featured
  #2  
Old Sat 14 April 2007, 01:50
Gerald_D
Just call me:
 
I saw those roller "rack & pinions" before, and I do not believe the marketing claims of that company. When some real customers talk about how good they are, then I will laugh a bit less. That design is similar to a bicycle chain, only it is the opposite way around.

Funny how companies say that normal rack & pinion is bad when they try to sell a different idea.
  #3  
Old Thu 24 January 2008, 01:00
IN-WondeR
Just call me: Kim
 
Randers
Denmark
nexen Roller Pinion System

Have you all seen this rack and pinion...

www.nexengroup.com

The say it delivers more speed, more accuracy and less maintenance than any other system out there....

Click the link for info...

http://www.nexengroup.com/nexen/prod...duct?pn=966500

They even have a small video of the thing in action...
  #4  
Old Thu 24 January 2008, 02:38
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Hi Kim, welcome back!

See this thread:
http://www.mechmate.com/forums/showthread.php?t=244
  #5  
Old Thu 24 January 2008, 06:02
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
Send a message via Yahoo to Robert M Send a message via Skype™ to Robert M
Kim,
What marketing claims is…well in my experience & opinion they just never really care about customer needs, ethics and… the environment. Actually, their paid to sell & pusha product not to care or making it better, just making more sales !
As any marketing guy will say or heard “ it’s a new old thing, just redone in a better way !”
Seen it, done it and out of it for ever !
People, be careful when it’s sound to good. It will never be said enough !!
My opinion. Amicalement Robert
  #6  
Old Thu 24 January 2008, 13:26
IN-WondeR
Just call me: Kim
 
Randers
Denmark
Thank's Gerald...

I'm not planning on buying this, I just stumbled on it, and thought what a nice idea... So what am I doing, trying to build my own version... nice to have a Co2 Laser at your disposal... :-D

Nad as far as accuracy, I'm not sure, but I'll see what it will do later this year as I'm trying to get hold of some pretty small roller pinions for the wheel that drives along the rail... The Rail I have already made DXF for, now all I need is the roller....

And Robert... That is very true, but never the less, I'm going to try and make my own rails and rollers the nexen way to, just to try and make it work for me...
  #7  
Old Thu 24 January 2008, 13:48
IN-WondeR
Just call me: Kim
 
Randers
Denmark
First try of making the rack part of the nexen...

Been cut in 10mm mild steel on the laser at work. Not the best surface, but it's kind of ok... Will try to cut it in 8mm next time, if that works out well, then I'll cut length's in 8mm Domex 650, that ought to hold for quite som time without having to surface treat the material... Otherwise, I'll cut them in Stainless Steel... :-D
Attached Images
File Type: jpg DSC01207.JPG (32.4 KB, 662 views)
  #8  
Old Thu 24 January 2008, 15:58
Doug_Ford
Just call me: Doug #3
 
Conway (Arkansas)
United States of America
Very impressive Kim. Good luck.
  #9  
Old Thu 24 January 2008, 16:23
IN-WondeR
Just call me: Kim
 
Randers
Denmark
Thank you Doug, I'm hoping to find the needle bearings I need for the pinion sometime soon, so I can make that also...
  #10  
Old Thu 24 January 2008, 21:09
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Kim, your pinion diameter will be very big.....you will have very little force to drive the router unless you put lots of gears/belts between the motor and pinion.
  #11  
Old Fri 25 January 2008, 03:21
IN-WondeR
Just call me: Kim
 
Randers
Denmark
Gerald...

The Pinioon, will have the exact diameter of the real nexen pinion, 47.5mm in diameter... So not so big again. But yes, a belt gear of 3:1 should do the trick, and this was also intended... I'm currently looking into how to build the pinion as it seems needle bearings whis small isn't available anywhere... but I have some ideas around now...
  #12  
Old Fri 25 January 2008, 06:12
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
Send a message via Yahoo to Robert M Send a message via Skype™ to Robert M
Hi Kim,
Now with in mind knowing your making your own « laser copy » of the NEXEN system, I find it very interesting. Please keep us posted on your results and findings, it will be interesting to see cost/effectiveness of it as a DIY – laser cut approach. I like that !
Nice approach, keep up the good work !
  #13  
Old Fri 25 January 2008, 06:17
IN-WondeR
Just call me: Kim
 
Randers
Denmark
Sure Robert... I will be posting more as it progresses during the next few weeks, I should have a working model ready within a month or so... I need to either get some very small needle rollers or some small bearings that will hold a precision hardened dowl in place so it can turn when it runs the rail... But I'll post all that I can for this homemade "nexen" system.
Closed Thread

Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Thread Tools

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


All times are GMT -6. The time now is 04:55.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.