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Setting a lathe up for the first time.

Hi guys,

I've finally up to the part where I get to use my lathe. I've never use a CNC machine before so it's a little confusing. I've tried a few settings but with no luck. Everytime I use the wizard it just sets off the X hard limit warning.

I have installed homing sensors at the ends of each axis. Is this what I call zero?

I'm still yet to test the spindle because I keep setting off the hard limit. Is there a way to test the spindle without loading a gcode file?

I did manage to do a OD turn the other day but it was turning towards the tail stock not the head stock. Why and how do I fix this?

Is there a masso guide to run through once a new machine has been finished?

Cheers,

Josh

 

you can use the MDI to turn the spindle on if the  spindle motor is under Masso control. i'm not sure what the format for the G code is with this controller since I have hardly played around with it. but you will need a S500 M03 should turn your spindle on in a clockwise direction at 500 rpm. S always comes before your speed value and the M03 or M-code tells the machine which way to rotate the spindle a M04 would turn it in a counter clockwise direction and a M05 would stop the Spindle.

 

MDI is short for Manual Data Input. gives you a way to run the machine with out having a program. if you have a MPG( Manual pulse generator ) you can use the hand wheel to move you axis by hand to touch of your part to set your Z zero and switch over to your X to take a cut off your diameter so you can set that value after you measure it. just make sure your resolution is set to the smallest setting so you don't move to fast into your part.

@machinedude Thanks for that bud! Got in going 🙂

@ecs

let me see if I can explain the basics for you here.

  1. when you place your homing sensors that is what is referred to as you machine home position. This is basically a fixed position that that machine needs for reference so it knows where it is at. this is why you need to home the machine every time you start the machine up.
  2. limit switches are a safety feature to prevent a hard crash and damage caused as a result. so the machine hit's a limit switch and alarms out with an over travel alarm before you get into real trouble.
  3.  soft limits are defined in the controller and are an extra layer of protection before you hit a hard limit.
  4.  when you think of your part zero's this would be what is referred as your program origin. with lathe work you would touch off the Z axis and set a zero once the face is cleaned up.  Your passes for facing would take into account extra stock for your facing operation. you would start with a positive value and end up at Zero on this operation, when you set you X axis you take a small cut off the stock to clean up you diameter and measure it be for you move off that cut in the X axis.
  5. Cartesian coordinate system is how determine your positive and negative values in your programs. this will depend on the style of lathe but in your case I think you have a tool post at the front so this image should explain things well.
Uploaded files:
  • lathe-.jpg

some other stuff to consider is which mode your in for your programs. lathes typically have two modes

1 radius mode

2 diameter mode

I'm am not sure if Masso gives you the choice between the two or not?

And depending on which side you doing your cutting will determine which way your spindle is rotating. on a front mount tool post you will be working in a spindle counter clockwise direction probably 99.9 % of the time if not 100%.

hope all this helps you out.

Thanks @machinedude all this info was very helpful sorry i took so long to reply!!

About the direction. I do have a front mounted tool post. Currently when a do a M03 it spins the correct way towards the cutter. This would mean i have it backwards correct?

Quote from ECS on July 12, 2019, 6:19 am

Thanks @machinedude all this info was very helpful sorry i took so long to reply!!

About the direction. I do have a front mounted tool post. Currently when a do a M03 it spins the correct way towards the cutter. This would mean i have it backwards correct?

looking at the M code in the documents yes you would be correct.  a M04 should actually be needed for a counter clockwise spindle rotation in your case. I would say you might have some wires crossed on the direction pins.

@machinedude its a 3 phase motor couldn't i just swap 2 wires and run the motor the other way?

Quote from ECS on July 12, 2019, 6:36 am

@machinedude its a 3 phase motor couldn't i just swap 2 wires and run the motor the other way?

yeah I think you can change direction on the motor too. i'm not an expert on that end but I think it's possible.

Quote from machinedude on July 12, 2019, 6:31 am
Quote from ECS on July 12, 2019, 6:19 am

Thanks @machinedude all this info was very helpful sorry i took so long to reply!!

About the direction. I do have a front mounted tool post. Currently when a do a M03 it spins the correct way towards the cutter. This would mean i have it backwards correct?

looking at the M code in the documents yes you would be correct.  a M04 should actually be needed for a counter clockwise spindle rotation in your case. I would say you might have some wires crossed on the direction pins.

 

Quote from ECS on July 12, 2019, 6:36 am

@machinedude its a 3 phase motor couldn't i just swap 2 wires and run the motor the other way?

Swapping two wires on the motor is the correct way to fix the spin of the spindle, if pin7/6 is connected to REV and pin5/4 is connected to FWD. Otherwise correcting the direction wiring is the correct fix.

Having the spindle turning the wrong way will lead to problems down the track when you forget that things are backwards.

Regards,

Arie.