NEE controller with reverse wear tool compensation

[Josh_Petitt]

Has anyone ever had difficulties with using reverse wear tool compensation with a NEE controller? We have a CR Onsrud 96C12 router with NEE controls. The controller does not always seem to interpret the reverse wear setting correctly and will ramp down into parts instead of traversing then plunging. Thanks in advance for any info.

[nwrepair1]

I just finished my first retrofit with a NEE AMC control. I beleave it is the same as yours. Are you talking about tool comp feature ? I have the setup books that the tech would have and I don't see that term you are using (reverse wear setting) . Also, ramping before a plunge is usually considered better than a straight plunge. I would have to look up ramping to see if it was considered a default setting. Give more details . Need to know also if you are using a remote graphic handpad or the black box with a touch panel mounted to machine.

[Josh_Petitt]

thanks for your response. Yes, I'm talking about a problem we are having in certain situations when using the 'Reverse Wear' option for tool compensation. Typically, we use 'Reverse Wear' for all operations. This is so the operator can measure the tool diameter at the CNC station and compensate without changing the master .NC program. For certain programs, the compensation is set to 'None' so the tool is centered on the line used in programming. In the same program the operation before or after will have 'Reverse Wear' on. What should happen is that the tool should retract, traverse in XY with Z constant, then plunge with a 45 ramp. What actually happens is that the tool retracts, then while moving in XY also plunges to the depth in Z, which results in a long 'ramping' into the material (and ruined parts).

We use MasterCAM X for programming

[Josh_Petitt]

When you say retrofit, do you mean you replaced the NEE controller, or replaced another controller with the NEE controller?

We have a black box with touch pad on a long cord that runs to the machine.

[Josh_Petitt]

Here is an example of a program that causes ramping. The error occurs after N280 and before N320. Somehow, after raising to Z1 (line N280), the tool goes directly to X0,Y0,Z.25 (a straight line) instead of translating then plunging into the material.

P74CY__07
(DATE - APR. 18 2006)
( 3/8" STRAIGHT BIT | TOOL - 4 )
( END CUTS )
N100 G70
N110 M06T4
N120 M03S16000
N130 G00X47.625Y.8125
N140 G42
N150 Z1.
N160 G01Z0.F300.
N170 X48.375F600.
N180 X48.
N190 X0.
N200 X-.375
N210 Z1.F300.
N220 G00X.375Y35.1875
N230 G01Z0.F300.
N240 X-.375F600.
N250 X0.
N260 X48.
N270 X48.375
N280 Z1.F300.
( PRESLOTS )
N290 G00X0.Y.75
N300 G40
N310 G01Y0.Z.25F600.
N320 Y36.
N330 X3.
N340 Y0.
N350 X6.
N360 Y36.
N370 X9.
N380 Y0.
N390 X12.
N400 Y36.
N410 X15.
N420 Y0.
N430 Z1.F300.
N440 M05
( SLOTWALL CUTTER | TOOL - 8 )
( SLOTS )
N450 M06T8
N460 M03S18000
N470 G00X0.Y0.
N480 Z1.
N490 G01Z.2188F300.
N500 Y36.
N510 X3.
N520 Y0.
N530 X6.
N540 Y36.
N550 X9.
N560 Y0.
N570 X12.
N580 Y36.
N590 X15.
N600 Y0.
N610 Z1.
N620 M05
( 3/8" STRAIGHT BIT | TOOL - 4 )
( SIDES )
N630 M06T4
N640 M03S16000
N650 G00X1.4971Y2.75
N660 Z1.
N670 G01Z0.F300.
N680 Y2.F600.
N690 Y25.872
N700 G02X1.6846Y26.0595R.1875
N710 G01X16.3154
N720 G02X16.5029Y25.872R.1875
N730 G01Y2.
N740 G02X16.3154Y1.8125R.1875
N750 G01X1.6846
N760 G02X1.4971Y2.R.1875
N770 G01Z1.F300.
N780 M05
( 1/2" DADO DOWNCUT | TOOL - 5 )
( 3/4" DADO 1/4" DEEP W DOWNCUT )
N790 M06T5
N800 M03S18000
N810 G00X2.1013Y2.25
N820 Z1.
N830 G01Z.75F600.
N840 X1.9346Z.5
N850 X16.0654
N860 Y25.622
N870 X1.9346
N880 Y2.25
N890 G00Z1.
N900 X15.3987Y2.5
N910 G42
N920 G01Z.75F600.
N930 X15.5654Z.5
N940 X2.4346
N950 G02X2.1846Y2.75R.25
N960 G01Y25.122
N970 G02X2.4346Y25.372R.25
N980 G01X15.5654
N990 G02X15.8154Y25.122R.25
N1000 G01Y2.75
N1010 G02X15.5654Y2.5R.25
N1020 G00Z1.
N1030 G40
N1040 M05
N1050 M02

[nwrepair1]

I replaced a Centroid control with the NEE control. Tool comp only changes path in x and y axis to compensate for an under or oversize bit. Ramping should be generated by that feature in Mastercam. I use Enroute and can't help much. Your g-code shows at N290 a rapid move to X0 Y.75 which should be at Z1 height. Then at N300 you turn off tool comp. Why would you do that? You don't change tools until N450. Next move is N310 go linear to Y0, Z.25. Is that a Z plunge into the material? My machine is set up so that Z0 is the top surface of material. Hence, my Z numbers are negative into the material. I think your problem is with your Mastercam post for this control. Post this thread into the software section of CNCzone for better help on the gcode. PS: I picked this control after seeing it on Onsrud machines. It is picky on how it wants g-code written. Most posts I've used from Enroute and Surfcam had to be adapted by the software companies to correct their ommisions.