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P.E.P. AUTOMATION APPLICATIONS


CPT© Technology
is the
next generation software logic. CPT© will automatically sequence and
assign
lead-ins to the most appropriate location along the path of interior cutouts and the
exterior boundary of parts so that the head remains down
at all times without traveling over another cutout or part!
On this nest the dashed
line is the cutter path with head-raises. The numbers on the parts represent the sub
program number that the post processor will output to the control.

CPT© logic
handles all of the following:
- Automatically sequences the parts on all of
the nested sheets so that the path of the cutter from part to part does not jump around
the sheet.
- Automatically assigns the exterior lead-in
to each part as follows.
- The lead-in is assigned so that the last
cut on the exterior of the part is attached to the meat of the plate. Assigning the
lead-in in this way allows the sheet to act as a heat sink to minimize the warping of the
part as it is cut and to maintain the cut quality.
- The lead-in is assigned so that the rapid
move traveling to the next part does not pass over previously cut parts. The logic looks
for intersections which fit the requirements, then tangencies and as a last resort it will
break up the longest line and bend the lead-in as required to keep the pierce from
interfering with the boundary of adjacent parts.
- The lead-in is assigned to the same
location on identical parts as often as is possible. This is done to increase the number
of times the part can be cut with the same sub program when the nest is posted. This
technique drastically reduces the amount of code required to cut the nest.
- Automatically sequences all of the interior
cutouts within each part so that the sequence of the cutouts is traveling toward the
exterior lead-in without ever traveling over another cutout. Having assigned the exterior
lead-in in step 2, the CPT© logic sequences the cutouts so that the last
interior cutout to be cut does not require a head raise when moving to the exterior
lead-in.
- In cases where parts are to be etched,
scribed or punch-marked, the CPT© logic combines each cycle
independently of the other, and outputs the appropriate cutter path as consecutive
geometry. This is done to eliminate cycling the control from one power cycle to
another, or offsetting the tool more than once per part. Purging gases and changing
cutting conditions take several seconds per change in cycles, as does offsetting the
cycles for punch-marking locations.
- Automatically assigns the lead-ins to
interior cutouts so that the cutter travels away from the cutout and directly to the next
cutout without traveling over another cutout.
- Automatically checks the entire cutter path
of all sheets for head raises. This process will detect for occurrences where there is no
choice but to raise the head. Although it is seldom required, the CPT© logic
takes no chances of a head crash occurring. When such a situation arises, the logic
outputs a head raise in the code that can be seen on the nest as a yellow dotted line.
Options in Crash Protection Technology:
|
Variable Lead Ins |
Each material can have a different type and location of Lead-In specified. A line-arc lead in can be assigned, allowing the laser to smoothly and quickly work into the cutout without slowing down for sharp of right angle intersections |
|
Tear Drop Sharp Corners |
Allows very sharp corners on right or acute angles of external geometry |
|
Edge Pierces |
Greatly reduce the number of pierces to save time on thick material or small parts |
|
Bubble Pierces |
Greatly reduce the number of pierces to save time on thick material or small parts |
|
Automatic Tabbing |
Tabs assigned automatically by part or cutout size in X and Y |
|
Automatic Leadout |
Optional Line, Overcut or Arc leadout assigned by material for external or internal cutouts |
|
Leadin Locations |
Right Side for Plasma Cutters or Least Code for older controllers or |
|
Stair Step Last Skeleton |
Maximize the drop (scrap) for partial sheets |
|
Assign Radius to Intersections |
Automatically assign a manufacturing radius to intersections. This allows the laser to cut the part geometry smoother faster and cleaner than leaving intersections that force the laser’s controller to come to an exact stop. The programmer specifies what types of geometry intersections will get a radius in the material database, so each material can be treated correctly. |
CPT has automatic Sequencing options that allow the programmer to specify different logic for each material to address specific concerns such as heat buildup, skeleton integrity, and fastest possible cut time (minimal number of rapids and shortest cutter path).