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Messages - rolexmechanic

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11
General Mach Discussion / Re: A axis not matching actual angle.
« on: March 19, 2011, 02:19:22 PM »

I see this here in sim as well. Not sure, but it appears the A dro is not Locked to Units as the others are. (Mach coords aren't either)
I would assume that even yhough the the value in A changes by the standard 25.4 conversion factor when toggling between G20/21, the angular movement would actually be accurate in degrees. (cannoit verify in sim tho)

I'll give it a try tonight to see if it remains accurate in both. It is easy enough to zero the axis if it does.

Thanks again to everyone.

12
General Mach Discussion / Re: A axis not matching actual angle.
« on: March 18, 2011, 10:43:01 PM »
Excellent, it now reads what looks like the correct angle on the DRO. At least in MM. If I choose inches then it is still off by a lot. Ideas?

You all have been so helpful, Hope I can return the favor sometime. Any questions on watch repair or goldsmithing gladly answered.

13
General Mach Discussion / Re: A axis not matching actual angle.
« on: March 18, 2011, 05:24:47 PM »
Could you double check my math on this? I think the motor is a step motor with 1.8 deg. so a full turn would be 200 steps. It is 1/4 step, so is that multiply by 4? which would be 800. The sherline website lists a worm 72-1 ratio so that would yield 800x72=57600. Divide by 360, so steps per should be 160?
Does that sound right?
Thanks so much for being patient with me while I figure this out.
Dwigh

14
General Mach Discussion / Re: A axis not matching actual angle.
« on: March 18, 2011, 10:54:11 AM »
I'm confused. If each step, which is in reality very small, read on the DRO as 8 degrees then wouldn't it have moved only a very little when it reads 360? Instead it is just the opposite.  A full 360 on the axis reads only a few degrees on the DRO.

If I zero the A axis DRO in inches (G20) then go to mm (G21) it changes to 357.4285 degrees. Zero in mm and switch to inches it reads 340.2587.

15
General Mach Discussion / Re: A axis not matching actual angle.
« on: March 17, 2011, 10:22:30 PM »
Edited,
the native units are inches, I use G21 to run in MM. I start in MM with the 4 axis at 0. I type in G20 into the input line and the DRO reads 340.2587. G21 and it goes back to 0.

16
General Mach Discussion / Re: A axis not matching actual angle.
« on: March 17, 2011, 10:12:22 PM »
Thank you Overload and Tweakie. The steps per is set to 3200, the same as the X and Y axes which work perfectly. The actual device is a Sherline 4th axis about 10 years old. The native units is inches and I use G21 command to operate in MM. It behaves as though it is in inches instead of degrees.

17
General Mach Discussion / Re: A axis not matching actual angle.
« on: March 17, 2011, 10:51:18 AM »
I don't think so but not sure. If I enter A0 into the MDI input line it just goes round and round, 4-5 complete turns and it is only at 24 or 25.

18
General Mach Discussion / A axis not matching actual angle.
« on: March 17, 2011, 01:29:32 AM »
hi,
I am trying to set up to use a 4th axis. It turns but the DRO reads 4 or 5 or so when it has gone 360 degrees. I have the General Logic Config set for A axis to angular. What else am I missing?
Thanks,
Dwight.

19
General Mach Discussion / Re: PPC file
« on: January 20, 2011, 01:04:41 AM »
I found a way to open it. so now, there is a lot of information looks like code. perhaps mach3 could use this information if I can get it into it. Suggestions?

Here is part of what is there.

MACHINE_NAME=AlignRite2MM
TIME_FACTOR=0.5
OUTPUT_DIRECTORY=C:\
OUTPUT_EXTENSION=*.CNC
EDIT=Y
DEFXYFEED=20
DEFZFEED=10
DEFSPEED=22500
DEFRETRACT=0.2
DEFXACCURACY=0.0005
DEFYACCURACY=0.0005
DEFZACCURACY=0.0005


//edited by Lisa as a General Post
// 6th of May 1999
// REFINED FOR MINITECH BY TIM
// No Block Numbers
// Didn't go over drilling Cycles

// Leading:Trailing:Format
//
// Format=0     Natural
// Format+1     Leading Zeros
// Format+2     Leading Blanks
// Format+4     Trailing Zeros
// Format+8     Trailing Blanks
// Format+16    No Decimal Point
// Format+32    "," instead of "."
// Format+64    Force "." at end of integers
// Format+128   Force ".0" at end of integers
// Format+256   Force "+" before positive values

procedure Globals
SET BREAK_MIN_ARC=0.0002
SET BREAK_ANG_ARC=0.0002
format ToolPos >X:1:3:0
format ToolPos >Y:1:3:0
format ToolPos >Z:1:3:0
format ToolPos >A:1:3:0
format ToolPos >B:1:3:0
format ToolPos >C:1:3:0
format ToolPos >I:1:3:0
format ToolPos >J:1:3:0
format ToolPos >K:1:3:0

20
General Mach Discussion / PPC file
« on: January 20, 2011, 12:43:23 AM »
Hi, I have an old Wolverine mill and I have located an old file with *.PPC extension. I have a feeling it has all of the machines setup information. Does anyone know what program will open it?
Thanks so much.
Dwight

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