[Bartuss1]

backlash are small gear, about 0.1 mm's, at the same weight of only periodic lubrication and replacement gear,
Tribology of engagement can not I write,
but minimize the noise through the transmission and the number of steps per unit, here is the division step 1:30, will be very soft work without surges

[Bartuss1]

[markcomp77]

do you use mobile as camera?

[Bartuss1]

Implementation of this part of the project was successful

Now time to drive the longitudinal (X axis)

[asuratman]

Hello markcomp77,
I am just curious that such big stepper motor zcb 50 Nm, you just limit power to 1.5 kw, is that right.

[markcomp77]

I am just curious that such big stepper motor zcb 50 Nm, you just limit power to 1.5 kw, is that right

Hi asuratman,

Thanks for your notice - this is important.

our stepper motors will work with small speed (rotate)
because, It is difficult to make high transmission ratio, we use 1/3
so, It is needed to use stepper with BIG torque

let's do some calculations...

Power[kW]=Torque[Nm] * Speed [rpm] / 9550

so...

Speed = Power * 9550 / Torque

if we connect only one stepper 50Nm to supply transformer 2kW
Speed = 2kW * 9550 / 50Nm = 382rpm = 6.3 rot/sec

not really high speed
but, I can power drivers directly from mains....
I will make same test... and decide way
--
same of my really working control unit include - 1kW trafo (230/180), 3 drivers(the same) and 3 stepper 28Nm - and have nice performance (20..40rot/sek)

transformers can be significantly overloaded
---


let's do other calculations...

3 x driver m542, supply with transformer 300W
3 x stepper motor - 3.1Nm

Power[kW]=Torque[Nm] * Speed [rpm] / 9550
Speed = Power * 9550 / Torque = 0.3kW*9550 / 3.1Nm = 924rm=15rot/sec

typical real result is similar but for 3 axis connected to one transformer 300W
and average load power of transformer is small
small because transformer is not hot after 4..5 hours of extensive tests

[markcomp77]

control cabinet on wheels



one wheel for my DeLorien




beginnings of layout... routing

[Bartuss1]

corps gear for the X-axis during the milling

[markcomp77]

new optobob (bob with optical isolation) - additional leds + resistor match to the voltage 24V (logic will work on 24V level)

[Bartuss1]

one finite gear X-axis, the second during the work

[RomanLini]

Bartuss1- what is your system for getting the belt tension correct?

Do you mount the large pulley first, then pull the belt tight, then drill the 4 motor holes like that?

[Bartuss1]

in reverse order

[markcomp77]

Bartuss, did you end gears for X?

[markcomp77]

how do you make tension of timing belt?

[Bartuss1]

a little complicated, but the best way to loosen stiff with periodic

[markcomp77]

oversized good quality timing belt solves the problem of making periodic tension
am I right?

[mxtras]

Very impressive work - and all the machining has been done on a CNC DRILL PRESS? Wow!!

Hats off to you guys.

Scott

[Bartuss1]

this is my cnc mill maschine for work


oryginal made in china from auction's picture

[Bartuss1]

parts of this machine also has implemented my cnc baby


http://soltysdesign.xip.pl/forum/vie...3&t=39&start=0

I confess that this is a 5 axis machine, my 39 construction

[markcomp77]

Bartuss, do you have new photos?

my ctlr electronics growing...
I designed new ac-protection filter/varistor/fuse for mains supplying...