NEE controller with reverse wear tool compensation
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.
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.
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
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.
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.
(DATE - APR. 18 2006)
( 3/8" STRAIGHT BIT | TOOL - 4 )
( END CUTS )
( PRESLOTS )
( SLOTWALL CUTTER | TOOL - 8 )
( SLOTS )
( 3/8" STRAIGHT BIT | TOOL - 4 )
( SIDES )
( 1/2" DADO DOWNCUT | TOOL - 5 )
( 3/4" DADO 1/4" DEEP W DOWNCUT )
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.