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Messages - BR549

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6361
General Mach Discussion / Re: plasma anti dive
« on: October 14, 2010, 11:09:40 AM »
Stirling I wonder IF that value is a percent rather than a speed???

You know how criptic mach is sometimes(;-). I would think % would make more sense.

I'll dig into it some more.

I wonder WHY that part of the manual was left OUT of the new version?

Just a thought, (;-) TP

6362
General Mach Discussion / Re: Tooling Offsets using the Tormach method
« on: October 13, 2010, 06:28:54 PM »
Barry I am glad you got it working,  I love it when a plan comes together and chips can start flyin.

(;-) TP


6363
General Mach Discussion / Re: Tooling Offsets using the Tormach method
« on: October 12, 2010, 11:24:48 PM »
Yes you measure the DIFFERENCE between the master tool and all the rest .  touch off the master tool to your reference surface. Set Z to zero. Then touch off each tool and look at the Z value. That number will be the tool offset. Change tool touch off record the number, until you run out of tools.

That will be the offset for each tool as compared to the master. ALSO remember that you set the TOM of the JOB to zero from the "master tool".

OOPS also you need to reset the FEERATES (;-) I had them running FAST to test the sequencing.

My time is your time until you get an understanding of the process, (;-)  TP

6364
General Mach Discussion / Re: Tooling Offsets using the Tormach method
« on: October 12, 2010, 06:07:56 PM »
THis may make it a little easier to read the code. I would set tool#2 =0.000 and then remeasure the rest of the tools. Then apply the offset for each tool in the tool table

T2=0.000
T3= x.*********
T4= X.*********
T5=X.*********

Then setup the program install tool#2 and touch off on the top of material and reset Z=0.000.

Now raise the tool up to a clearance height and start the program.

This assumes you do your tool changes away from the work area AND allow clearances to allow the machine to recycle the tool offsets after the tool change is complete and before it get back to the work.

Tool offsets can be done several different ways this seems to be an easy way.


*************************************************************

( Insert Tool#2 and set Z zero at Top of Material )

G17 G20 G40 G54 G64 G90 G49
G0 X0.0 Y0.0 Z1.000

(Spot Bearing Center INSERT 11/32 Drill Tool # 2 )
(0.34375)
G0 X-0.8000 Y1.3750 Z0.2000
G81 X-0.8000 Y1.3750 Z-0.1 R0.2 F105.0
G80

(Spot All Holes On Face Using 11/32 Drill Tool # 2)
G0 X-1.2336 Y0.7082 F100.0
G81 X-1.2336 Y0.7082 Z-0.1332 R0.2 F105.0
 X-0.8000 Y0.4000 Z-0.1332
 X-0.3664 Y0.7082 Z-0.1332
 X-0.3664 Y2.0418 Z-0.1332
 X-0.8000 Y2.3500 Z-0.1332
 X-1.2336 Y2.0418 Z-0.1332
G80

(11/32 Drill Mounting and Bearing Tool # 2)
G0 X-0.8000 Y2.3500
G83 X-0.8000 Y2.3500 Z-1.2 R0.2 F105.0 Q0.2
 X-0.8000 Y0.4000 Z-1.2
 X-0.8000 Y1.3750 Z-1.2
G80

(Drill 5/32 for 10-24 Bolt Tool # 3)
T3 M6
G43H3
(0.15)
G0 X-1.2336 Y0.7082
G83 X-1.2336 Y0.7082 Z-0.7 R0.2 F105.0 Q0.2
 X-0.3664 Y0.7082 Z-0.7
 X-0.3664 Y2.0418 Z-0.7
 X-1.2336 Y2.0418 Z-0.7
G80

(DrillTool 1.00 V End Mill Tool # 4)
T4 M6
G43H4
(0.875)
X-0.8000 Y1.3750 F8.0
G83 X-0.8000 Y1.3750 Z-1.5026 R0.2 F103.0 Q0.1
G80
G0 Z0.2000

(Step Drill Custom Bit Bearing Hole Tool # 5)
T5 M6
G43H5
(0.9)
G83 X-0.8000 Y1.3750 Z-1.25 R0.2 F103.0 Q0.1
G80
G0 Z2.000
G49
M05
M30
%


Hope that helps, (;-) TP

6365
General Mach Discussion / Re: Axis length movement profiling / mapping ?
« on: October 12, 2010, 01:47:57 PM »
As everyone has said. IF you need accuracy you have to BUILD it into your design. Trying to add it in later rarely works and usually is EXPEN$IVE.

If you run belt drives then make sure the width of the belt and the core material ( I prefer Kevlar) is strong enough to prevent the rubber band effect(stretching). Also use heat treated steel drive pulleys to prevent pulley wear over time. A simple 1 strand over loop design is very cost effective and works well in most applications.

Racks can be very cost effective IF you control backlash (splitdrive gears) and keep up with the wear factor of running in the same spot every time. rotate your work across the bed to spread out the wear.

(;-) TP

6366
General Mach Discussion / Re: Tooling Offsets using the Tormach method
« on: October 12, 2010, 01:21:33 PM »
Your master tool should be Zero length then reference all other tools against it. THEN set the top of material to the master.

 I alway use the longest tool for the job as the master that assures all comp moves will be down not up. So you should never trip the upper limit.

OR the other method is to always measure against a master (longest tool length you ever use) and then set the top of material to the master before you begin. But with limited quill travel you can run out of travel(Knee mill)

Just a thought, (;-) TP

6367
General Mach Discussion / Re: Tooling Offsets using the Tormach method
« on: October 12, 2010, 11:40:59 AM »
Just a thought , If the master tool (drill bit ) is the longest tool then all the rest will be - numbers when doing the measurement.  If you put in + values then mach thinks they are longer and raises the spindle??

(;-) TP

6368
General Mach Discussion / Re: Reverse Run stop when G0 ...
« on: October 12, 2010, 11:30:43 AM »
Try setting the look ahead to 1.

6369
General Mach Discussion / Re: Prev. seq. not yet complete
« on: October 12, 2010, 11:24:41 AM »
IF you need a great probing routine Check out Sterlings method/program. It is the best I have seen running mach.

By the way the plugin code is available to anyone who thinks they can fix it(;-)

Just a thought, (;-) TP

6370
General Mach Discussion / Re: Axis length movement profiling / mapping ?
« on: October 12, 2010, 11:20:15 AM »
Remember the error is not always accumalative(;-) It can swing both ways (+/-) and end up very close.

Just a thought, (;-) TP


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