Setting up the Spot Bore Knowledge
There are two knowledges contained in the Spot Bore sample drawing, which will allow you to see the parameters involved in canned cycle drilling for the Spot Bore cycle.
The parameters for Canned Cycles are pretty straightforward, and the Control Panel has very few cycle choices. Selecting the knowledge SPOTBORE1 will show the following parameters:
SPOTBORE1
Type
Type is set to 81 for Spot Boring. There are several Canned Cycles available and the types are shown here.
Mode
Mode refers to either G98 or G99 mode. You only need to fill in the numeric value. G98 will retract to the initial point between each hole and G99 mode will retract to the R point (set by the next parameter) between each hole.
R
This is the Retract point where the tool can move to between each hole. This is set to a positive Z value above the top of the part where you want the tool to retract to between passes and between each hole in G99 mode.
Safety Plane
The Safety Plane is where the tool starts in Z and also where the tool retract to between drills in G98 mode.
Depth per Pass
This is the depth to drill to for each pass in Z. Typically, Spot Boring is done in one pass. Otherwise it would be Peck Boring (see next section).
Total Cut Depth
This is the depth in Z where the tool is going to stop its drilling and retract.
Using these parameters and selecting the row of large holes in the part, shown here:
will produce a tool path and the following code:
%
:1234
N1G00G17G20G28G40G80G91Z0M5
N2G90
N3G52X0Y0Z0
N4G08P1
N5M08
N6(DRILL .25 DIA.)
N7G28G91Z0M05
N8G90T2005M06
N9T102
N10M03S18000
N11G00G17G55X11.Y1.
N12G00G43H5Z.25
N13G98G81Z-.375R.125Q1.F100.
N14X10.Y2.
N15X9.Y3.
N16X8.Y4.
N17X7.Y5.
N18X6.Y6.
N19G80
N20G28G91Z0M5
N21G28G91X0M09
N22G90
N23G52X0Y0Z0
N24G08P0
N25M30
%
This will cause the tool to move to the first hole location (X11, Y1 in this case) and then set the parameters for the canned cycle. Since the Mode was set to 98, in G98 mode the tool will start at Z.25 and retract to that position between holes (regardless of the setting of R). It will drill each hole at a feedrate of 100. inches per minute, until it reaches the G80 command on line N19.
There is a setting for R and also a Q in the code above, but in G98 mode and with a cycle of G81, both are ignored.
SPOTBORE2
Type
Type is set to 81 for Spot Boring. There are several Canned Cycles available and the types are shown here.
Mode
Mode refers to either G98 or G99 mode. You only need to fill in the numeric value. G99 will retract to the R point between each hole, in this case Z.125.
R
This is the Retract point where the tool can move to between each hole. This is set to a positive Z value above the top of the part where you want the tool to retract to between passes and between each hole in G99 mode.
Safety Plane
The Safety Plane is where the tool starts in Z and also where the tool retract to between drills in G98 mode.
Depth per Pass
This is the depth to drill to for each pass in Z. Typically, Spot Boring is done in one pass. Otherwise it would be Peck Boring (see next section).
Total Cut Depth
This is the depth in Z where the tool is going to stop its drilling and retract.
Using these parameters and selecting the row of large holes in the part, shown here:
will produce a tool path and the following code:
%
:1234
N1G00G17G20G28G40G80G91Z0M5
N2G90
N3G52X0Y0Z0
N4G08P1
N5M08
N6(DRILL .25 DIA.)
N7G28G91Z0M05
N8G90T2005M06
N9T102
N10M03S18000
N11G00G17G55X11.Y1.
N12G00G43H5Z.25
N13G99G81Z-.375R.125Q1.F100.
N14X10.Y2.
N15X9.Y3.
N16X8.Y4.
N17X7.Y5.
N18X6.Y6.
N19G80
N20G28G91Z0M5
N21G28G91X0M09
N22G90
N23G52X0Y0Z0
N24G08P0
N25M30
%
This will cause the tool to move to the first hole location (X11, Y1 in this case) and then set the parameters for the canned cycle. Since the Mode was set to 99, in G99 mode the tool will start at Z.25 and retract to Z.125 between holes (because of the setting of R). It will drill each hole at a feedrate of 100. inches per minute, until it reaches the G80 command on line N19.