Messages

31

General Mach Discussion / Re: Z axis can`t Autozero the DRO

« on: June 17, 2011, 04:22:35 PM »

No, I don`t. Its 0

32

General Mach Discussion / Z axis can`t Autozero the DRO

« on: June 17, 2011, 03:37:28 PM »

It started today. After touching my touchoff plate, Z axis DRO always shows +269 in stead of 0. I mean in stead of 6.5 I set it to move up 6.5 after touching the plate. Auto zero is checked in config/home and limits.
I was playing with the button "set variable position" and "go to variable position" yesterday to see how it works.
Maybe this is the reason, but how can I fix that?

33

General Mach Discussion / Re: Radius tool compensation

« on: May 06, 2011, 11:53:05 PM »

There is something called "Diam. Wear" and "Hight Wear" in Config/tooltable, but Im a newbee -I dont know how to use it.

34

General Mach Discussion / Re: Mach offseting my work

« on: May 06, 2011, 10:16:54 PM »

Ofcourse 21.5 and 38.5 - Im learning:-)
Do you understand all the gcode and numbers, before it starts to cut? I think I can see where it is, N190.  No offset signs before cutting?

Is there some offset, fixtures, tool database, something else in Mach that can affect this offsetting?
I mean, if there was a backlash or deflection, my pocket would not be 20x20, but it is. I will try to cut in the oposite direction and slow.

35

General Mach Discussion / Re: Mach offseting my work

« on: May 06, 2011, 07:14:24 PM »

Gerry, I discribed how I Zero the material in my first post. I think I do it right. Thats what I did a few times to be sure its Zeroed, but there is still some offset.

I dont know much about Gcodes and I wasnt even trying to understand them, but now in the buttom of the posted code I can see X21.500 and Y21.500. Its milling the pocket from the inside and out.
Shouldnt the last moves be X 20 and Y20 ?

36

General Mach Discussion / Re: Mach offseting my work

« on: May 06, 2011, 07:02:06 PM »

Ok, thanks.  Here I was trying to mill a pocket. Pocket start/corner is located  X20  Y20 from Zero and pocket dimension is also 20x20mm.
But after milling, the left and buttom side of my square pocket is about X21 Y21  from Zero when I messure it with a ruller. I didnt messure exactly, because its very clear that its not where it shoul be.
The pocket has the right dimensions.
Im sure its my fault, but I dont know where to find it.

The code is generated with Vcarvepro. I dont know if its changing when loaded to Mach with Machs offsets and fixtures.
I mean I have never changed any offsets and fixtures, because Im not sure how to use them - maybe here something is wrong.
I was milling like this for 2 years, but first now, when I had a piece of material with exact dimensions I realized that something is wrong. I was always cutting things out, so I didnt see it.

( Pocket 2 )
( File created: Saturday, May 07, 2011 - 12:38 AM)
( for Mach2/3 from Vectric )
( Material Size)
( X= 100.000, Y= 100.000, Z= 5.000)
()
(Toolpaths used in this file:)
(Pocket 2)
(Tools used in this file: )
(2 = End Mill {3 mm})
N100G00G21G17G90G40G49G80
N110G71G91.1
N120T2M06
N130 (End Mill {3 mm})
N140G00G43Z20.000H2
N150S5000M03
N160(Toolpath:- Pocket 2)
N170()
N180G94
N190X0.000Y0.000F1200.0
N200G00X28.025Y31.975Z2.000
N210G00Z1.000
N220G1Z-2.000F600.0
N230G1X29.000Y31.000F1200.0
N240G1X31.000
N250G1X31.975Y31.975
N260G1X31.000Y31.000
N270G1Y29.000
N280G1X31.975Y28.025
N290G1X31.000Y29.000
N300G1X29.000
N310G1X28.025Y28.025
N320G1X29.000Y29.000
N330G1Y31.000
N340G1X28.025Y31.975
N350G1X26.500Y33.500
N360G1X25.525Y34.475
N370G1X26.500Y33.500
N380G1X33.500
N390G1X34.475Y34.475
N400G1X33.500Y33.500
N410G1Y26.500
N420G1X34.475Y25.525
N430G1X33.500Y26.500
N440G1X26.500
N450G1X25.525Y25.525
N460G1X26.500Y26.500
N470G1Y33.500
N480G1X24.000Y36.000
N490G1X23.025Y36.975
N500G1X24.000Y36.000
N510G1X36.000
N520G1X36.975Y36.975
N530G1X36.000Y36.000
N540G1Y24.000
N550G1X36.975Y23.025
N560G1X36.000Y24.000
N570G1X24.000
N580G1X23.025Y23.025
N590G1X24.000Y24.000
N600G1Y36.000
N610G1X21.500Y38.500
N620G1X38.500
N630G1Y21.500
N640G1X21.500
N650G1Y38.500
N660G00Z2.000
N670G00Z20.000
N680G00X0.000Y0.000
N690M09
N700M30
%

37

General Mach Discussion / Mach offseting my work

« on: May 06, 2011, 01:28:51 PM »

Hello.

Could someone tell me why Mach is offsetting my work with 1mm on X and Y axis in the positive direction?
 
Here is what I do. I mill the X edge og material, my router bit is 3mm in diameter, so I type X -1.5 in the X DRO. I do the same on Y axis. I didnt use the touch off plate, to minimize...my mistakes/settings.
The milled part ( a square) has the right dimensions,  but its milled 1mm from where I expect it to be, in the North - East direction from Zero.
I have been reading the last 2 weeks and cant find the answer.

38

General Mach Discussion / Re: How do I reverse the values on my DRO?

« on: January 29, 2011, 12:40:36 PM »

Thank you very much, it`s working. Just one click kan turn a bad day to a good day:-)

39

General Mach Discussion / Re: How do I reverse the values on my DRO?

« on: January 29, 2011, 10:18:30 AM »

Hello.

I'm trying to do the same thing. I have build a simple lathe model, because I want to learn how to use the software.
  
My tool is located on the other side of the center, compairing to a traditional lathe, so I want the up arrow (X axis) on my keyboard to move the tool away from the center and read positive DRO value.
Everything is working fine, but DRO is reading negative.
Checking and unchecking the X axis DIR LowActiv is not making any difference. Up arrow is always negative.
Any Ideas how to fix it?

40

G-Code, CAD, and CAM discussions / VisualMill bridges ?

« on: November 13, 2010, 03:03:55 PM »

Hello

Im running simulations in VisualMill, adding tabs/bridges (2,5D profiling) to keep my part inside the material, but all 3D toolpaths are milling the bridges away.  Is it normal? When I choose outline of my part as a machining region and run 3d finish path with a ballmill, there is a little bit of the briges left ( not enough), because my tool stops when it reach the machining region, but if I choose the region a little bit outside the part, the bridges are gone.
How can I keep the part inside my material or just the same place?  I don`t have any holes in the part, its just a 3d surface.