Transcript Document 7157547

STEP-NC a new language for
CNC machining and
measurement
Martin Hardwick
STEP Tools, Inc.
[email protected]
518 687-2848 x 306
Why STEP-NC
• New information to make machining faster and
more accurate
– Supply chain interoperability
– On machine feed-speed/tool-wear optimization
– On machine simulation and collision detection
– Closed loop machining and measurement
CAD
Design
STEP
CAM
Plan
STEP-NC
CNC
Machine
The STEP-NC Concept
• New programming concepts
– Workingsteps define operations
– CAD tolerances define quality
– CAM tool paths define control
STEP-NC AP-238
AB Tool Tilt
BC Table Tilt
The STEP-NC Model
geometry
tolerance
property
workpiece
as workpiece,
stock, fixture,
or tool shape
executable
workplan, if/then, parallel, …
S[0:?]
geometry
machining_feature
pocket, plane, hole, region,
machining_workingstep
S[0:?]
probe
machining_operation
plane milling, side milling, drilling,
path geometry
cross section
feed override
L[0:?]
toolpath
cutter location trajectory,
cutter contact trajectory
technology
machine functions
strategy
tool
ISO 13399
tool database
How to implement?
• Add STEP export to your CAD systems.
• Purchase tools to build STEP-NC data
– Convert APT or MCD data
– Integrate with CAD data
– Verify machining processes
• Purchase tools to make CNC operation more
efficient
– Automated feed-speed optimization
– Automated measurement
– Automated tool path correction
STEP-NC Explorer
CAD
CNC
STEP-NC
Explorer
CAM
PDM
“The STEP-NC
Explorer is a prototype
system for creating,
managing and
optimizing STEP –NC
data”
• Integrate data from multiple data sources
• Optimize machining on the control
Impeller Roughing
Impeller - Finishing
Impeller Inspection
Tolerance Evaluation
Simulation
Cutting tools
Control Machining
Business Benefits
•
•
•
•
15% faster machining
TBD% fewer mistakes
TBD% more data reuse
TBD% more accurate machining
New since Sandvik
•
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Accelerated data reuse using toolpath orientation
As-is, to-be and delta models for executables
AP-203 & ISO 13399 models for cutting tools
More robust graphics
More robust simulation
More viewing options
More export control options
Goals for this meeting
• Show feed speed optimization
• Show closed loop machining
– Rough machine
– Finish machine one blade
– Measure using Faro arm
– Generate corrected tool paths
– Machine remaining blades
– Perform final quality check on CMM
– Estimate benefits