not fully retracting

[Bob W.]

It appears that my mill is not fully retracting during drilling cycles before heading to the next hole location. It looks like it nicks the side of the hole just slightly as it retracts out. Is there a setting to specify a full retract before rapid in X or Y?

 

Thanks,

Bob

[Thad]

quote:

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Is there a setting to specify a full retract before rapid in X or Y?

---

Bob, that should all be built into the canned cycle on the control.

 

Can you post some code that does this?

 

Thad

[Guest]

Make sure in your tool path dialog, that on the drill page that "use clearance only at the start and end of operation" is unchecked.

 

If it is ,

 

what values are you using in your drill cycle?

[gcode]

Haas has an "exact stop" parameter you can activate for drill cycles. Its been years since

I ran run so I don't remember the parameter number.

How close are you running your R plane

[Ray H.]

Nope,

In your control definition under linear there is control to tell it to go XY, then Z for approach. Then Z, XY for retract.

[Bob W.]

Here is the code in question.

 

 

( .375 90 DEG. CSINK TOOL - 12 DIA. OFF. - 12 LEN. - 12 DIA. - .375 )

N900 T12 M6

N910 G0 G90 G54 X.215 Y-.245 S3000 M3

N920 G43 H12 Z.03 T5

N930 M8

N940 G99 G81 Z-.062 R.03 F15.

N950 X1.465 Y-.645

N960 G80

N970 X2.145 Y-.245

N980 G99 G81 Z-.062 R.03 F15.

N990 X3.395 Y-.645

N1000 G80

N1010 X4.075 Y-.245

N1020 G99 G81 Z-.062 R.03 F15.

N1030 X5.325 Y-.645

N1040 G80

N1050 X6.005 Y-.245

N1060 G99 G81 Z-.062 R.03 F15.

N1070 X7.255 Y-.645

N1080 G80

N1090 X7.935 Y-.245

N1100 G99 G81 Z-.062 R.03 F15.

N1110 X9.185 Y-.645

N1120 G80

N1130 X9.865 Y-.245

N1140 G99 G81 Z-.062 R.03 F15.

N1150 X11.115 Y-.645

N1160 G80

N1170 X.215 Y-1.915

N1180 G99 G81 Z-.062 R.03 F15.

N1190 X1.465 Y-2.315

N1200 G80

 

Thanks,

Bob

[Guest]

You need G98 on the drilling lines before all of the G80 lines

 

G99 keeps it down at the R plane, G98 allows it to retract back up.

[Paul Decelles]

A G98 will tell the machine to retract to the 'initial height' which in this case is Z.03 as set in the G43 line:

 

N920 G43 H12 Z.03 T5

 

A G99 will tell the machine to retract to the 'R-Plane" as set in the canned cycle definition line:

 

N940 G99 G81 Z-.062 R.03 F15.

 

Notice that the height is the same for the initial height and the retract height. To fix this, simply check the box nect to 'Clearance' in the operation parameters for that operation and set a reasonable height that you wish to retract to in between the holes. This will result in G98 output automagically.

[Bruce Gibson]

gotta love that "automagically" stuff!