5 axis build full steam ahead!

[louieatienza]

I like your spinning nut design! Wish I had the machinery to fab those parts....

[CarveOne]

Where you say you lack in machining efforts, You make up for it with the HUGEST thread ever

Oh, I'm no girl I was refering to the Porn.....doesn't really make sense to me now come to think of it!

I think Wigitmaster has the hugest thread honor all to himself. But yeah, I do pity the poor soul who decides to read my whole build log starting from the beginning. It's like a novel where the plot changes directions every few months in storyline time.

I do really enjoy seeing the machining parts of everyone's build logs. There's a lot to learn from the setups and designs. Keep it coming.

CarveOne

[port_huon]

Liam,
Where did you get the timing pulley from?
I've been trying to find a local (Oz) supplier of a 32 tooth pulley of about 52 mm . The hole spacing on your timing pulley looks the same as the ballnuts I have.

[Master of nun]

Hi, I sourced them through a local Launceston supplier, Tas Bearing and Chain, but I think they may be Pies brand. they were around $40 but came with the normal Hub on one side that I machined off, bored out the center to 27mm to clear my 25mm screw and drilled with the mill using a indexing head to match screw from linearmotionbearings (TBI Brand http://www.ballscrew.com.tw/ so you won't find a pulley in this configuration.

This by the way is 60 tooth, 5mm pitch.

Find a bearing supply company in your area!

[mottahedeh]

I am new to the forum. I just love it. Like others, I am looking for a cheaper version of a 5-axis head. As my contribution, I will post time-to-time some patent drawings available on www.uspto.gov . Let's start with the Tri-Tech head

[Master of nun]

Thanks for the link mottahedeh, Perhaps it would be more useful Posted here

5-axis (BC/AC) head construction

[Master of nun]

Well it has been some time since posting as I've been on Holiday in Thailand.

I have made some good progress since my return.

You will be pleased to know that the BC axis are now fully assembled with the Spindle mounted also
[IMG][/IMG]
[IMG][/IMG]

[IMG][/IMG]

[IMG][/IMG]

You have no idea....well you probably do, how happy I am to finally see this thing together


Also managed to get the X axis steppers mounted with their reduction gearboxes, I had to first turn the shafts down as the gearboxes from Keling have a 1/2" input and the steppers have a 16mm shaft.

[IMG][/IMG]
[IMG][/IMG]


and the pinion gears on

[IMG][/IMG]



I pretty much have the Z axis completed

[IMG][/IMG]


The stepper housed within the 150 x 150mm Z Column.....still requires a belt tensioner of some type.
Z ballscrew mounted
pullies bored and grubscrewed
Pullies for Pneumatic counter balance cables
Linear rails attached

[IMG][/IMG]
[IMG][/IMG]


Rotating nut and stepper for the Y axis mounted

[IMG][/IMG]
[IMG][/IMG]

Started the control cabinet and it's layout within.
[IMG][/IMG]


Vacuum table from 32mm MDF and PVC valves for the zones...still lots to be done here.
[IMG][/IMG]


Yet another project will take me off the router for another few weeks......stay tuned!



Cheers Liam.

[Jason Marsha]

Liam,

You are making great progress.

I don't want to be a killjoy but I noticed that you pulled the rotor out of the stepper to turn the ends down. I have always seen on the zone that a stepper loses nearly half of its torque if you remove the rotor from its body. The best reason I got was relating to the type of magnet normally used with steppers.

Jason

[Master of nun]

Oooops, thats not what I want to hear


This I would like to know more about!



Anyone?

[rowbare]

Mariss from Gecko drive has mentioned that in the past. See his post on this thread:

disassembly of stepper motors

bob

[Master of nun]

It certainly isn't looking good, However the X axis runs two 1700 oz-in steppers into 10:1 reduction, I should still have **** loads of torque....only time will tell

Thanks for the heads up.

[Rodm1954]

At worst you get to test if a 900 oz motor is able to push your gantry.