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Cuts are flipped
« on: February 28, 2015, 12:01:55 PM »
I bought a Chinese hy 3040 column 4 axis mill. It only works with manual spindle control.
  I loaded in my Mach 3, i keyed in the inputs given to me in the machine documentation.
I am running 4 axis so I also did tool path set to radius .3525.
When I hit tab key, the jog screen, z was correct up and down. Hard to remember for sure but I believe all 3 x,y and a, ran in reverse. So if it hit x left button in jog the machine goes right.
I did a bunch of online searches, best I came up with was toggle home limits to reversed. In doing that, machine jogs correct in all directions.
I installed a bit, took machine to beginning, set my zeros and ran a g code that I know works, because I have a Syil x5 I use every day with these codes.
 After 2 hrs, the part was finished and looked perfect. I removed it and then....oh my!! It's cut in reverse, the bottom is still the bottom but the left to right is flipped or mirrored!   Image the word "BIG". It is cut as GIB, and each letter is backwards...so the letter B should be straight line left but the straight line is right and the arcs on left, a backwards B.

Offline ger21

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Re: Cuts are flipped
« Reply #1 on: February 28, 2015, 01:34:49 PM »
I would say that most likely, the axis that is cutting backwards is set up backwards. Keep in mind that wehn you jog, the direction is the direction that the tool is moving, not the table.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Cuts are flipped
« Reply #2 on: February 28, 2015, 02:03:57 PM »
When I jog it is moving correctly. Left button tool moves left or you could say table moves right.

What I do notice that must be a key to the puzzle is the tool path image. The toolpath image is flipped. So I am looking at the screen and I see a face looking down when it should be looking up. When I execute the machine it is cutting the image I see on the toolpath exactly but that image is wrong.  It's possible the code is the problem and not the Mach settings. I use visual mill for my codes. BUT, keep in mind that this exact code is running and displaying in the correct direction on my Syil x5 speed master.
Re: Cuts are flipped
« Reply #3 on: February 28, 2015, 02:07:04 PM »
One thing that I have noticed. In manual jogging the machine is moving correctly. There is an image on the screen showing the toolpath. That image is wrong. There is a face, like a coin...the face is looking down in that image, but the face should be looking up!

Offline ger21

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Re: Cuts are flipped
« Reply #4 on: February 28, 2015, 02:17:02 PM »
Is left moving in the -Y direction? If so, is the up button X+?



I still say the machine is backwards.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Cuts are flipped
« Reply #5 on: February 28, 2015, 04:09:38 PM »
I think it's backwards to but I am so confused how. If I hit the left x button, the machine goes left the x dro goes into the negative. I hit the top y button, the machine moves back towards the wall, the y dro goes positive. The z dro goes positive as the spindle raises. The a axis, it goes positive as the chuck rotates up and away from me. But it's cutting a mirror of what it should. Pulling my hair out about it.
Re: Cuts are flipped
« Reply #6 on: February 28, 2015, 04:15:03 PM »
Which axis do you think is cutting backwards?  It's hard to grasp. I picture in my head, laying on my left side, if I flipped to my right side my feet are same spot but my body facing right now. So then the x axis is upside down but in reality it's y that is backwards?
Re: Cuts are flipped
« Reply #7 on: February 28, 2015, 04:19:31 PM »
I think that's it...y has to be backwards somehow. If x was backwards my feet would move from right side to left side if I flipped over. If I flip over y, my feet are same but I change direction.  If that's right, how do I flip the y axis?

Offline dude1

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Re: Cuts are flipped
« Reply #8 on: February 28, 2015, 04:35:19 PM »
stand in front of the machine facing  the X axis it should be in front of you so if it move left - left arrow, right + right arrow.

z up is PgUp button Z- is PgDn button

if those to are doing that good

Y+ is away from you up arrow, Y- is to you down arrow

if wrong ger21 will correct me

Offline ger21

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Re: Cuts are flipped
« Reply #9 on: February 28, 2015, 04:54:41 PM »
Is this a moving table, or moving gantry machine?

Quote
If I hit the left x button, the machine goes left the x dro goes into the negative. I hit the top y button, the machine moves back towards the wall, the y dro goes positive. The z dro goes positive as the spindle raises.

This sounds correct for a moving gantry. Perhaps the A axis is backwards?
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html