Messages

71

General Mach Discussion / Re: Machine not backing off switch when homing

« on: April 08, 2010, 08:18:28 AM »

I was running approx vR3.043.026ish with no problems, I have since upgraded to the latest R3.043.038 and now when i home my router it hits the home/limit switch and just issues the limit switch error.
I will try playing around with the debounce settings tomorrow, but it is strange that it wasn't until R3.043.038 that this started happening.

72

General Mach Discussion / Re: Radius error, interesting problem.......

« on: August 27, 2009, 06:34:58 AM »

Well I've managed to overcome the problem, it's not really a fix, it's just a workaround.
I changed the radius to be a series of tiny lines and it works like it should.
I'm hoping there is a fix, because the program is a lot smaller with a single radius, rather that hundreds of lines.

73

General Mach Discussion / Radius error, interesting problem.......

« on: August 25, 2009, 02:32:24 AM »

Hey guys, been a while.
Can anyone offer some advice as to why I'm getting this problem with machining a radius?
I've attached a few pics to try and explain the issue.
The machine is basically the same as a lathe, left and right is Z axis and the diameter is X axis.
X Axis is set as diameter not as radius.
When I machine the profile as per the pic the largest radius only finishes at approximately half the depth.
All I can guess is that it has something to do with having X axis set to diameter mode. So if I increase the diameter by 10mm, X axis only actually move 5mm.
As you can see the radius should be R2.604, but on the radius drawing you can see a radius drawn by pen, that is the radius I'm achieving by entering all the sizes below.
It's got me baffled. BTW I was using 3.042.029 so I thought I'd upgrade to 3.043.00, but no difference.
The toolpath pic I've attached is what Mach shows is happening, you can see the strange profile it shows and also shows the actual path it is taking (the green one, but I'm sure you  already knew that.)
Here's the program to see if anyone can help work it out.

;Radius Profile
#1=100  ;Feedrate
#2=0.1 ;Cut Size
#3=10   ;No of Passes

G90 G56 G18
M98 P1 L#3
M30

O1
G91
M98 P2 L1
G0 X2.0
Z4.571
X[-4.-#2]
M99

O2
G2 X-0.38 Z-0.19 R0.19 F[#1/2]
G1 Z-0.486 F#1
G3 Z-3.219 R2.604 F[#1/2]
G1 Z-0.486 F#1
G2 X0.38 Z-0.19 R0.19 F[#1/2]
G1 X2. F#1
M99

74

General Mach Discussion / Re: +, -, * & /

« on: July 07, 2009, 06:35:29 AM »

Hi Hood, Thanks for the reply.
I've noticed that adding a negative value only works for fields that have %+.4f in the format string, is it possible to use it on a DRO that has %.4f as a format string (no positive value).
I only ask because it's a DRO I use for material size, so in the DRO it has 20.0000 not +20.0000.
So it seems that unless I have the + I cannot use the negative calculation, is there a way around this?
Darc

75

General Mach Discussion / +, -, * & /

« on: July 06, 2009, 06:26:40 AM »

Does anyone else use these variabls on a DRO?
So if the DRO = 32.00 and you select the DRO and enter /2 into that field the remaining value will be 16.
It also works the same for +, and *, but for some reason I can't get the - (minus) to work.
Does anyone know if this is a bug?

76

General Mach Discussion / Re: ± issue with v3.042.025?

« on: April 06, 2009, 12:22:40 AM »

Thanks Graham, That actually explains alot. I like the idea of that.

77

General Mach Discussion / ± issue with v3.042.025?

« on: April 03, 2009, 06:36:54 PM »

Hi Guys, I just upgraded to v3.042.025 from an older version (quite a few revisions ago) and I've noticed that my dro's will not accept a negative value unless the format string for the dro is set to %+.4f, previously I had %.4f so as it wouldn't show the positive symbol but it would still show the negative symbol.
Has the formatting for the dro's changed?
Darc

78

General Mach Discussion / Re: Slow jog mode, when in step ONLY..

« on: February 11, 2009, 06:11:57 PM »

Thanks Hood, the initialisation string worked a treat.

79

General Mach Discussion / Slow jog mode, when in step ONLY..

« on: February 11, 2009, 04:51:34 PM »

I noticed that as soon as Mach is started if you jog using step mode it will only move at a maximum of 6mm per minute, but if I run and finish a program then the step mode runs at the normal maximum.
I've noticed this on 2 different cnc machines and also on my test computer.
BTW I'm running 3.041, I did upgrade to the newest version, but I had to roll back because it wouldn't allow a negative value to be entered.
Is this slow jog a common fault?

80

VB and the development of wizards / Re: Not jogging in new screen?

« on: August 16, 2008, 06:45:57 PM »

Hi Dennis, I found that if I had the JOG ON/OFF button set to display on all screens, I couldn't actually jog.
So I just had to add the button to all screens instead ..... voila...