NX CAM : Utilizing CNC Machine Simulation Software to ... · PDF filePLM World ‘06...
Transcript of NX CAM : Utilizing CNC Machine Simulation Software to ... · PDF filePLM World ‘06...
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PLM World ‘06
Premium Partners:
NX CAM : Utilizing CNC Machine Simulation Software to Improve Process Efficiency
Jim Huddy
(949) 753-1050
Philip D. Ramirez
Hughes [email protected]
(281) 363-6950
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Company Background
Hughes Christensen is a leading provider of drill bits and services to the oil, gas and geothermal drilling markets.A Baker Hughes companyHeadquartered in The Woodlands, Texas, with operations world-wide.2004 gross revenues $500M+
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The Woodlands, USA
Celle, GermanyLafayette,USA
Maracaibo,Venezuela
Belfast,N. Ireland
Worldwide OperationsWorldwide Operations
World-wide Manufacturing
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Problem Statement
· Very Complex parts are being machined.
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Problem Statement continued
· Complex 3, 4 axis lathes used to machine parts.
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Problem Statement Continued
· Complex 4,5,6-Axis milling machines and fixtures are being used.
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Problem Statement continued:
· Machine crashes are possible with unproven tapes.
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Problem Statement Continued
· Large quantities of new parts must be programmed quickly to keep up with increasing demand.
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Problem Statement Continued
· Scrapping parts due to NC programming errors is expensive because it wastes expensive parts and shop time.
· Dry running NC programs is time consuming and expensive because of lost productivity.
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Solution:
· Automate NC toolpath creation using UnigraphicsCAD/CAM system and Unigraphics GRIP/NC.
· Automate NC toolpath creation using Unigraphicstemplate models and assemblies.
· Verify NC toolpath.· Automate verification process as much as possible.· Verify NC tapes BEFORE they get to the shop. This
helps to prevent scrap.· Verify NC Toolpath using post-processed output
instead of using generic CAM operation simulation.
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Benefits of Automating Using Unigraphics NX CAD/CAM
· Allows NC programmer to quickly and easily create error free toolpaths.
· Reduce NC program creation time from 2 days to 30 seconds.
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Benefits of Automating Using Unigraphics NX CAD/CAM
NC Programmer only has to press 1 button and he is done. Easy! (Shhh! Don’t tell the boss that you are done already.)
Eliminates NC programmer stress. (Now you just have to look busy.)
Eliminates NC programmer errors. (But you take the credit.)
All programs are consistent. They run the same. (They are all Perfect!)
Make more programs in less time. (Or more time to surf the net.)
Allows designer’s creativity to flow since the NC program is made automatically without regard to the complexity of his design. (Tell the designer that his designs are too simple.)
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Why Vericut Machine Simulation?
· Ability to add multiple views to see the part being cut from several angles all at once.
· Ability to stop verification, rotate views, zoom in/outthen continue.
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More Why Vericut Machine Simulation
· Ability to use the actual NC tape to verify exactly what is going into the machine control. This eliminates possible post-processing errors not being detected in generic CAM operation verification.
· Vericut allows you to open a window with the machine progam in it and step through block by block to see what code caused which motion. Helps in debugging NC programs.
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More Why Vericut Machine Simulation
· 4-Axis Turning Verification Capabilities
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More Why Vericut Machine Simulation
· 6-Axis Milling Machine Simulation
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More Why Vericut Machine Simulation
· Ability to compare finished machined part against CAD Model. · This ensures that the finished part is exactly what was designed. · Helps us to determine if we have an NC error or designer error, before we cut
any parts in the shop. Helps to prevent part scrap! (Saves you Money!)
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More Why Vericut Machine Simulation
· Automation is simple. .USR file saves all settings.· .USR file is a simple text file that can be manipulated by an
external program for further automation.
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Summarize Benefits of Machine Simulation.
· Ability to view real PART motion.
· Ability to view true MACHINE and TOOLING motion.
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Summarize Benefits of using Machine Simulation
· No scrapped parts!
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Summarize Benefits of using Machine Simulation
· No machine wrecks!
· No wasted time on shop floor! Saves you money!
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About CGTech
· Original developer of VERICUT®
· Experts in CNC machine simulation and optimization technology
· Established in 1988 · Headquarters in California
· Subsidiaries in UK, France, Germany, Italy, Japan· Worldwide diverse customer base
· Aerospace· Automotive· Marine· Medical· Consumer products· Utilities, power generation· Education· Heavy industry & machinery
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Verification Technology
· VERICUT “feature model”· Accurate cut features
· Same speed regardless
of NC program size
· Robust reliable results
for all material removal
· One model for all cutting operations
· 3 axis milling
· 5 axis milling
· Turning & Mill/Turn
· Wire EDM
Cylinder
Torus
Plane
Torus
Cylinder
Plane
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CNC Machine Simulation
· “The cost of an NC machine has gone up considerably in the last 5 years. Manufacturers need to protect their investment.”-- Modern Machine Shop
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Machine Simulation Technology
· Using software technology to virtually machine a part, before real cutting begins can…· Eliminate errors, scrap,
rework, broken tools· Reduce possibility of
machine crash, downtime, delays
· Detect spindle and tablecollisions
· Improve process efficiency· Increase safety
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Machine Simulation Technology
· Continuous collision checking· All moving components swept
through space· Emulation of complex control
features· sub-programs, branching,
system variables, offsets, cutter compensation, transformations, etc.
· Accurate & configurable machine and control models
· Easy job setup and use· Logical separation between
machine configuration and job-specific information
Continuous
Step
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Multiple Setups in a Single Session
· Each setup has its own…· Machine and
control· Fixtures· Tools· NC programs· Settings
· Cut Stock automatically moves from setup to setup
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Synchronize Subsystems
· VERICUT 6.0 can move 32 sub-systems simultaneously
· Synchronization method is saved in the control
· Synchronization occurs within one setup
· Subsystems selected for synchronization are saved in the setup
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NC Program Optimization Benefits
· Reduces machining time· Faster time-to-market· Increased productivity
· Prolongs cutting tool life· Reduces machine tool wear· Improves finish quality· Produces consistent results across
machines, shifts, operators, and programmers (even if the “expert” isn’t around)
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Optimization Methods
· Optimize by hand· Very time-consuming & error-prone· Not all programmers have proper expertise· Difficult to visualize the cutting conditions for
each cut
· Use CAM software· CAM software doesn’t know the
in-process material for each cut
· Adaptive controls· Reactive vs. pro-active
· VERICUT software
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How VERICUT Optimization Works
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Extra Optimization Benefits
· Decreased Cutter Wear
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Summary…
· Machine simulation and optimization software:· Ensures programs will not scrap the part, break
cutters, crash the machine, etc.· Eliminates the need for prove-outs· Protects your machines, parts, and processes· Lights-out, first run machining
· Ensures that the part is dimensionally accurate· Optimizes for more efficient machining
· Increases your competitive edge!