ramp cutting

[CAM]

cutting a diameter using ramp option and telling it how far to ramp every rotation(sometimes being 1-30 rotations)until programmed depth is reached.when it reaches finall depth,say doing g02 it will kick a weird g03 move at the end and rambo thru the area not need to be cut.and yes i have no lead in lead out programmed

thanks in advance

[robk]

Are you using pocket or contour toolpath?

[CAM]

contour

[robk]

I can't re-create your problem here... What is the dia. of the contour, and the tool? Does it go rambo in the program or backplot or both?

[Jean-Simon]

Are you using computer or control cutter comp and what post? The more infos you give the better answer you'll get.

 

Welcome to the forum!

 

Simon

[JAMMAN]

My thoughts exactly. When I do "ramp" I turn control comp off and use computer comp so I can backplot and know what's gonna happen without having to trust the controllers interpritation of where the cutter should be.

 

Works for me.

[CAM]

i appriciate the response,i didnt want to make the initial statement too long,so here we go.

lets say the dia. is 12 inch's,going to cut c/w g2,with ramp option,going .010 deep each revolution,until .053 deep.

im using fanuc controller and post.the rambo action is not visible on the backplot or verify.im grinding quartz with diamond tooling.my only other option so far is to feed .010 deep at a location then do g2 and repeat this 5 times then once .003this wears the diamond tooling more so than ramping around this dia.

[CAM]

also ....i forgot.i am using wear for tool comp.this tends to (for me)lessen the thinking on the operator for tool offsets.i really dont want to use two comp styles in on prog.it would make things a mess

[Jean-Simon]

I really don't see why you'd get that G3, can you upload the file?

 

 

Simon

[CAM]

actually i take that back on this individual tool tool comp is off(its just roughing c/l of a groove)

[CAM]

(rough out c/l of groove)

(no tool comp)

N3T1M6( DIA. - 9.53)

N4G0G90G54X137.54Y0.S6200M3

N5G43H1Z50.M8

N6Z2.9

N7G1Z-7.1F127.(z approach)

N8G3Z-7.65I-137.54J0.F152.4

N9X88.876Y-104.968Z-8.124I-137.54J0.(ramping to depth)

N10X137.54Y0.R137.54(finishing groove depth)

N11X88.876Y-104.968R137.54(rambo move)??

N12G0Z50.

[CAM]

this is metric

[Müřlıń®]

If you have your workstation on the floor by your machine tool you can get away from using CC in the control.

 

I have never use it in the control in 10 years of machining.

 

I always just lie about the cutter size and crunch another program.

 

Most of the time it only takes a few seconds to recrunch pockets and contours.

 

I have heard tons of problems arising from CC in the control. But never had to deal with any of them

 

 

Murlin

[BernieT]

Could the filter be causing this? Maybe try turning off 'create arcs' in filtering?

 

Just a thought.

[jmcook]

what is the exact post you are using....this looks to be a post problem. You are using I & J moves to describe your ramp move, then you are using an R value to describe your final pass. Just looks odd to me.

 

I would suggest playing with a couple of settings in your post such as

 

breakarcs : 1 (this will break arcs into 90deg quadrants)

 

arcoutput : 1 (my guess is that this is set at 2)

 

play around with it & let us know

[Tim Johnson]

This is a good move.

 

-----------------------------------------------

N4G0G90G54X137.54Y0.S6200M3

N5G43H1Z50.M8

N6Z2.9

N7G1Z-7.1F127.(z approach)

N8G3Z-7.65I-137.54J0.F152.4

N9X88.876Y-104.968Z-8.124I-137.54J0.(ramping to depth)

N10X137.54Y0.R137.54(finishing groove depth)

N11X88.876Y-104.968R137.54(rambo move)??

N12G0Z50.

_____________________________________________

You start at X137.54Y0.

when you ramp you finish your "Z" at X88.876Y-104.968 (block 9). block 10 brings the final z depth to your start point. Block 11 just takes the final z to where it first started. X88.876Y-104.968 (block 10).

_______________________________________________

[Tim Johnson]

sorry, (block 10) should read (block 11).

[CAM]

thanks for all your input,thoughts and time.i will try all these suggestions

thanks

[Tim Johnson]

CAM,

 

If you want to finish your ramping at the start point, in the ramp options change from angle to depth. you will get two full circles in the example shown above.