Transcript STEP-NC: Digital Manufacturing using STEP

STEP-NC Solutions
Martin Hardwick
David Loffredo
[email protected]
STEP-NC Manufacturing Center
Watervliet Arsenal, Building 20
Metal Processing Manufacturing Division
Watervliet, New York 12189
(518) 687-2848 / (518) 687-4420 fax
http://www.steptools.com
Introduction
“4 CAM’s – 2 Controls – 0 Postprocessors”
AP-238
AB Tool Tilt
M. Hardwick
BC Table Tilt
Slide 2
AP-238 Functionality
Benefit
Other Models
Turning (in AP-238 ed1)
EDM
Contouring
Inspection
Robotics
Parametric
Operations
Today
TCP
Lines
& Arcs
Tested during
research phase
Feature
parameters
Toleranced
Splines
Feature
tolerances
Product
Geometry
Drilling
Cycles
Better Process
Control
Better Process
Monitoring
Probing
Workingsteps
Toleranced
Surfacing
Conditional
Operations
Flexible
Manufacturing
Functionality
M. Hardwick
Slide 3
Smart Process Control
bi-directional
New components
CNC Vendor components
Subs
Control HMI
CAM
Writer
dll
AP-238
File
Expresso
Data check
STEP-NC
Simulator
Converter
dll
TCP Motion
Codes
Motion
Controller
• Base level configuration
– Eliminates post
– Enables faster operator prove-out
– Creates pathway for on-machine optimization
M. Hardwick
Slide 4
Smart Process Monitoring
bi-directional
New components
CNC Vendor components
Subs
Control HMI
CAM
Writer
dll
AP-238
File
Monitor
dll
TCP
Code
Expresso
Data check
STEP-NC
Simulator
Customer
Report
Block
Number
CNC
Loader
Motion
Controller
• Process Monitor configuration
– Allows customer to verify correct operation of the control
– Timings, operational parameters
– Feature, operation and tool id for each workingstep
M. Hardwick
Slide 5
Smart Manufacturing
System Integrator component
Control HMI
Executive
Subs
Run
WS1-N
CAM
Writer
dll
AP-238
File
Program
Status
Interpreter
dll
STEP-NC
Simulator
Sensor value
Sensor value
Block
Number
TCP
Code
Expresso
Data check
Customer
Report
CNC
Loader
Motion
Controller
• STEP-NC Interpreter configuration
– Execution flow depends on sensor values
– Sensor values are connected to NC Variables of the program
– Executive tells Interpreter when to start and stop
M. Hardwick
Slide 6
Applications
• Smart Process Control
– CNC Operator needs to change a speed for all pocketing operations
– Converter identifies all workingsteps that use this feed.
– CAM operator guided to operations that need to be edited
• Smart Process Monitoring
– Motion control records maximum Z tool tip position
– Monitor dll adds data about workingstep and feature id
– OEM checks hole feature has required depth.
• Smart Manufacturing
– CAM creates program including probing operations
– Executive relates probe value to STEP-NC Variable
– Interpretation of program decides how to adjust finish allowance
M. Hardwick
Slide 7
The Dynamic
“Here are dll’s
to read and
write STEP-NC
data”
OEM
ISO Standard
Shop
“Put the AP-238
dll’s on my TCP
controls”
CNC Vendor
M. Hardwick
“Accept jobs defined
by AP-238 so I will
know how they are
machined”
“I need AP-238 so I
need to upgrade my
controls to include the
TCP option.”
Slide 8
Current Status
• Can machine NAS 979 CDS part with 5 axis cone
– 3 and 5 axis tool paths, lines and arcs
– Machine functions and technology
• Draft International Standard in review
– A few EXPRESS errors being found
– Some scope for data compression
– Enhancements for process monitoring
• Writer and Converter dlls ready for Beta use
– Stage 1 – replace RS274D but keep same procedures
– Stage 2 – optimize procedures using new intelligent data
M. Hardwick
Slide 9
Conclusion
• AP-238 delivers rich data to the control
• The benefits are well known
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–
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Design anywhere, build anywhere
Cross enterprise re-use of CNC programs
Fewer operational errors
Faster machining
• The post was always in the way
– Delivering low level machine codes
– No connection between a feed and the reason for the feed
• The combination of Open Controls, TCP
Programming and AP-238 eliminates the barrier.
M. Hardwick
Slide 10