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248 7 Programming: Canned Cycles, sub-programs
7.4 Sub-programs
Blocks 1 through 5 are comments.
Blocks 6 through 8 define common defaults.
Block 9 defines the blockform or stock size. This is only needed for
the 3D solid. The stock defined is 6x6 with center at 0,0.
Block 10 defines the initial roughing tool which has a 1" diameter.
Blocks 11 through 13 define RPM and turn on the spindle and
coolant.
Block 15 defines an island in sub-program #1. The actual island is
then defined in blocks 23 through 31
Block 16 is a 4x5 rectangular pocket with center at 0, 0. Note that
finish stock is specified and the cycle is requested to skip the finish
pass. This is required for the stand alone finish cycle.
Block 17 defines the finer roughing tool which a 1/4” diameter.
Block 18 defines the island for the finer roughing tool.
Block 19 defines the pocket for the finer roughing tool with the
specification of the coarsetool=1.
Block 20 defines the finish tool which a 1/4” diameter. Finishing
could be done with the same tool but for illustration purposes a
different tool is used.
Block 21 re-defines the island for the side-finish tool. This is
necessary for the finish cycle to work properly
Block 22 is the side-finish cycle. Note that it allows leaving stock
thus permitting multiple finish passes to be taken each with
different tool (if needed).
Block 23 re-defines the island for the bottom-finish tool. This is
necessary for the finish cycle to work properly.
Block 24 is the bottom-finish cycle. The bottom finish cycle will
remove bottom and side stock. If a bottom finish cycle is used first
it may not be necessary to use a side-finish cycle. They are both
used in this example for illustration purposes.
This is the rendering of the program after being ran in Draw. The top
view is the line draw, and the bottom view is the 3D solid model.
Approximate machining time is 15 minutes.
The parameters for this tool must either come from the
tool table or be saved in the tool table. This is a
requirement for the coarse tool feature.
The island must always be programmed before the
corresponding pocket. Also note that the island must
specify the machining. In this case, since the island profile
is defined in a clockwise orientation, the machining side is
to the left (see block 26).
Specifying the coarse tool as tool #1 allows the pocket
cycle to calculate the material left by the coarse tool and
only machine the required material. Also note that finish
stock is specified and the cycle is requested to skip the
finish pass. This is required for the stand alone finish
cycles.