Author Topic: 4th axis for a Sieg SX2  (Read 310 times)

Offline Will_D

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4th axis for a Sieg SX2
« on: September 02, 2018, 02:57:18 PM »
Can anyone recommend a complete kit* for to add a 4th axis to my Sieg/DDCSV mill?

*complete means:

Angle Plate - 2 axis
Stepper Motor
Small 3 Jaw Chuck
Stepper driver (optional)

MTIA

 Will, Malahide.ie
Engineer and Chemist to the NHC.ie
http://www.nationalhomebrewclub.ie/forum/

Online awemawson

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Re: 4th axis for a Sieg SX2
« Reply #1 on: September 02, 2018, 03:04:12 PM »
Beware of the cheap Chinese 4th axis kits. One came with my Laser Cutter, and they all look to be the same generic design. Thick aluminium plate with the main bearing pressed into a recess and nothing else holding it together  :bugeye:


A modification was in order ! (and duly executed)
Andrew Mawson
East Sussex

Offline PK

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Re: 4th axis for a Sieg SX2
« Reply #2 on: September 02, 2018, 05:54:22 PM »
Things like this look attractive.
https://www.alibaba.com/product-detail/3-jaw-Chuck-65mm-CNC-4th_60522110831.html?spm=a2700.7724838.2017115.63.2dea40f6HrmjhE
Price is low enough that you could scrap it for parts and it'd still be an OK deal..

PK

Online philf

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Re: 4th axis for a Sieg SX2
« Reply #3 on: September 03, 2018, 05:31:43 AM »
Things like this look attractive.
https://www.alibaba.com/product-detail/3-jaw-Chuck-65mm-CNC-4th_60522110831.html?spm=a2700.7724838.2017115.63.2dea40f6HrmjhE
Price is low enough that you could scrap it for parts and it'd still be an OK deal..

PK

That looks very cheap for a harmonic drive version. I was lucky that I acquired a harmonic drive from a piece of scrap equipment for free but mine's really too low geared at 200:1. 50:1 is much better. Mine is a 100mm centre height with a Myford nose so will take a faceplate or 4" chuck with no problems.
Phil Fern
Location: Marple, Cheshire

Offline PK

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Re: 4th axis for a Sieg SX2
« Reply #4 on: September 03, 2018, 05:34:25 AM »
Agree, it seems cheap. My last buy (used) was about AUD500.  But it is quite small???

Offline JHovel

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Re: 4th axis for a Sieg SX2
« Reply #5 on: September 03, 2018, 08:03:09 AM »
We know what a 'harmonic drive' is - are you really convinced that this seller does?
I don't for a minute believe this a harmonic drive. I reckon it is a cheap - probably plastic geared - planetary drive (=with backlash).
Look here as to the understanding of what a harmonic drive is: https://www.alibaba.com/product-detail/High-Quality-Worm-Gear-Reduction-Reducer_60064048979.html?spm=a2700.7724838.2017115.197.3b3a284btyeymr,
https://www.alibaba.com/product-detail/Varitron-High-Efficiency-Precise-Planetary-Gearbox_1960241385.html?spm=a2700.7724838.2017115.175.3b3a284btyeymr
and
https://www.alibaba.com/product-detail/REDSUN-T-series-steering-box-motor_60737070081.html?spm=a2700.7724838.2017115.260.3b3a284btyeymr

I leave it to you to decide if this is good value....
Cheers,
Joe