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Messages - Gadget

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LazyTurn / Re: Slow spindle on my lathe
« on: August 20, 2010, 01:10:22 PM »
Finally solved it.
In the configuration of the "eprom" on the driver board the step multiplier was set to 0 so i changed it to 4.
Now I got speed... yeeeeaaaaayyy.
It´s strange though because i asked the guy who sells the cards if he had any idea of what was the problem
and he couldn´t figure that out.  :-\

LazyTurn / Re: Slow spindle on my lathe
« on: August 20, 2010, 11:52:24 AM »
I tried that but i´ve tried it before and the magic number is 935.
The spindle will  not go faster. (I checked the rating and it´s 3600rpm.)
I put 4096 (1024 x 4) in steps per but there´s no improvement.
Does it really have to be this complicated?

LazyTurn / Re: Slow spindle on my lathe
« on: August 19, 2010, 12:38:14 PM »
How can i know what´s the right steps per?
I´ve already tried with different numbers in pulley settings but i never get more that 940 rpm.  Buuuhuuuuu    :O(

LazyTurn / Slow spindle on my lathe
« on: August 19, 2010, 08:36:37 AM »

I´ve asked around about this and noone seems to have a solution for me.
I´m running smoothstepper on my lathe and the spindle motor is a dc servo motor that´s rated to about 3000 RPM.
For some reason it just won´t go any faster than about 940 RPM.
It feels like i´ve tried everything.
In Motor Tuning i have velocity at max but it still won´t go faster.
I´ll soon throw my lathe in the trash if I don´t solve this.

SmoothStepper USB / Smoothstepper Lathe RPM problem
« on: February 08, 2010, 07:00:26 AM »
I can´t seem to get my lathe spindle to go faster than 935 rpm (according to the index pulse).
The motor is supposed to do 3600 rpm but no matter what i do, it´s not going faster.
I use a servo motor with encoder connected to the smooth stepper through a servo motor drive.(step & dir)  http://www.cnc2all.com/servo-engine-driver-eng.html
It doesn´t seem to be anything wrong with Mach setup so does anyone know if there is a setting in the smooth stepper that solves this...


SmoothStepper USB / Index Pulse Help!
« on: January 20, 2010, 02:47:45 PM »
I want to use an index pulse with my lathe.
I don´t have alot of experience about this and would appreciate some help.

This is the "component" i´m using... http://www.everlight.com/upload/product_pdf/ITR8102.pdf
I´ve connected it to the breakout board MB-02 on the smoothstepper and
get a correct reading in between ALOT of "jitter".

How do i get rid of this jitter?
Do i need pull-up or pull-down resistors?
Someone told me that the index pulsel MUST be active low, is this true?

As it is now i believe the signal is active high since i use an index disc with a slot once/turn!


General Mach Discussion / Re: Servo spindle on Lathe
« on: January 09, 2010, 12:49:00 PM »
In the encoder datasheet it sais 500 cpr.
Does that mean that i should write 2000?

General Mach Discussion / Re: Servo spindle on Lathe
« on: January 09, 2010, 11:03:15 AM »
Thanks for answering

The drive is http://www.cnc2all.com/servo-engine-driver.html
The motor is a small 150w servo motor(it´s a very small lahe) with a "HEDS-5540" encoder. http://www.chipcatalog.com/Datasheet/FA1DD47A1C902DD3EC1732ECFCA376DF.htm
My Mach version is "Version R3" and the SS version is "Beta 2".

You know what?
Thanks for asking because now when i checked the smoothstepper version i found a little box for the spindle where "relay" was checked.
After i checked "Step and Dir" it actually turns....   Sweeeeeeeeeeeeeeeet.

You saved my day!!!  ;D

Any tips on how to tune it?

General Mach Discussion / Servo spindle on Lathe
« on: January 09, 2010, 10:41:29 AM »
I really need help configuring my lathe spindle.
I´ve installed a servo motor on my small lathe and I can get the motor to go to different positions in the program that came with
the servo motor drive but in mach, nothing happens!?
The Servo motor drive has a Step, Dir and Signal Ground that i´ve connected to the breakout board for the smooth stepper, the same way as the stepping motors but what is missing?
How do i set the motor up in Mach?

I´ve been trying for hours now and cannot get it to work.
I´m using the smooth stepper with breakout board MB-02.
The spindle motor is a small 150W servo motor with following encoder. (HEDS-5540)http://www.chipcatalog.com/Datasheet/FA1DD47A1C902DD3EC1732ECFCA376DF.htm
(The lathe is a small Emco unimat and the original spindle is about 50W)
Here is the servo drive i use http://www.cnc2all.com/servo-engine-driver.html
This is my first build and i´m completely lost.  :(
I´m trying to set up the motor in the program provided with the servo drive (UHU controller).

If I connect the encoder channels as they´re supposed to i can get the motor to turn to a specific position but in Mach 3 nothing happens.
If I swap the channels a&b the spindle does 1 turn then there is an error lamp.
Someone´s got a clue where i should start??
I really need help.

Kind Regards


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