skill development for successful cad-cam technology
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8/8/2019 Skill Development for Successful Cad-cam Technology
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SKILL DEVELOPMENT FOR
SUCCESSFUL CAD-CAMTECHNOLOGY
AUTHOR: Mr. SRIKANTA MOHARANAAUTHOR: Mr. SRIKANTA MOHARANA
PRESENTER: Mr. SANKET KUMAR ROUTPRESENTER: Mr. SANKET KUMAR ROUT
MISS PRIYANKA BEHERAMISS PRIYANKA BEHERA
MISS GAYATRI SWAINMISS GAYATRI SWAIN
Swami Vivekananda National Institute Of Swami Vivekananda National Institute Of
Rehabilitation Training And Research.Rehabilitation Training And Research.
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INTRODUCTIONINTRODUCTION ± ± PHASEPHASE--II
Human is the only creature of this nature, whoHuman is the only creature of this nature, whois very finely & intelligently tuned.is very finely & intelligently tuned.
CADCAD-- CAM technology imparting very perfectCAM technology imparting very perfect& elegant services to the production industries& elegant services to the production industrieswhere mass production is mostly concerned.where mass production is mostly concerned.
For the cause of prosthetic & orthotic, itFor the cause of prosthetic & orthotic, it
requires a very soft sense of perception (SSP)requires a very soft sense of perception (SSP)to manipulate the data within the perspectivesto manipulate the data within the perspectivesof comfort, function & acceptability.of comfort, function & acceptability.
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PREPRE--SKILL DEVELOPMENTSKILL DEVELOPMENT
BEFORE TO CADBEFORE TO CAD--CAMCAMCADCAD--CAM is a mechanical digitizedCAM is a mechanical digitized
process. It does not prospects anyprocess. It does not prospects any
sensible elegance reference to CFC.sensible elegance reference to CFC.Patient always needs special attentionPatient always needs special attention
in respect of CFC.in respect of CFC.
The PreThe Pre--skill development with regardsskill development with regardsto biological parameter is mostlyto biological parameter is mostly
necessary.necessary.
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GEOMETRIC MODELINGGEOMETRIC MODELING
Geometric modeling is one of the powerfulGeometric modeling is one of the powerful
tooling system through which a successfultooling system through which a successful
prosthetist can study :prosthetist can study :--Behaviour of the stump.Behaviour of the stump.
Character of the surface.Character of the surface.
Reference of 2DReference of 2D
& 3D Modeling.& 3D Modeling.
IDEAS
SOCKETINTERFACE
DESIGN ANALYSIS
GEOMETRIC
MODELING
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IDEASIDEAS
Ideas of pathological parameter Ideas of pathological parameter
like oedema, neuroma, phantomlike oedema, neuroma, phantom
sensation, bone spur, skin break sensation, bone spur, skin break down, bursitis, adherent skin,down, bursitis, adherent skin,
hypertrophied scar, keloid arehypertrophied scar, keloid are
more precisely consideredmore precisely considered..
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DESIGN ANALYSISDESIGN ANALYSIS
Evaluation of areas and volumes.Evaluation of areas and volumes.
Evaluation of mass and inertia proportion of Evaluation of mass and inertia proportion of stumpstump
Interference checking of range of motion,Interference checking of range of motion,valgus / varus angle.valgus / varus angle.
Analysis of tolerance built up over bonyAnalysis of tolerance built up over bony
projected areas. projected areas.Kinematic analysis.Kinematic analysis.
Standard finite element analysis.Standard finite element analysis.
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SOCKET INTERFACESOCKET INTERFACE
BEHAVIOUR BEHAVIOUR Socket interface behaviour can be categorizedSocket interface behaviour can be categorized
through:through:--
Perspective viewsPerspective viewsOrthographic viewsOrthographic views
Isometric viewsIsometric views
Axonometric viewsAxonometric viewsSectioningSectioning
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Welcome to phaseWelcome to phaseIIII
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DIGITAL DIFFERENTIALDIGITAL DIFFERENTIAL
ANALYSIS (DDA)ANALYSIS (DDA)Most versatile element of CADMost versatile element of CAD--CAM systemCAM systemis the component of software related tois the component of software related tomanipulation of geometric element.manipulation of geometric element.
Raster Scan Graphics:Raster Scan Graphics:-- Converting vector Converting vector straight lines to raster images to be displayedstraight lines to raster images to be displayedon a raster terminal utilizing the pixelon a raster terminal utilizing the pixel
information.information.DDA is one of the first algorithms developedDDA is one of the first algorithms developedfor for rasteringrastering in thein the vectorialvectorial informationinformation
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SCHEMATICSCHEMATIC
REPRESENTATION OF CADREPRESENTATION OF CAD--
CAMCAM--P&O PROCESSP&O PROCESS
OPTICAL BASED
DIGITIZATION
MECHANICAL CAST
DIGITIZATION
ELECTROMAGNETIC
FIELD BASED
DIGITIZATION
SCANNING SYSTEM DATA COLLECTION
STORE
DATA
MANIPULATION
STAGE
DATA PROCESSING
& MANUFACTURING
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PLANNING OF THEPLANNING OF THE
DRAWING (PFD)DRAWING (PFD)The planning directly relates to:The planning directly relates to:--
1.1. Reduction of shearing force.Reduction of shearing force.
2.2. Force execution quality.Force execution quality.
3.3. TolerabilityTolerability of the surfaceof the surface
WhileWhile planning planning for for aa successfulsuccessful modificationmodification of of thethe
Stump,Stump, youyou mustmust carefullycarefully organizeorganize thethe informationinformation likelike::--
1.1. UnitsUnits
2.2. Coordinate systemCoordinate system
3.3. LimitsLimits4.4. GridGrid
5.5. SnapSnap
6.6. OrthoOrtho
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EMPHASISEMPHASIS
After the successful collection of data & required drawingAfter the successful collection of data & required drawingwe can enter to the field of manufacturing throughwe can enter to the field of manufacturing throughnumerical controlled computing system.numerical controlled computing system.
And during this stage P & O engineer must emphasizedAnd during this stage P & O engineer must emphasizedon :on :--
1.1. Principle of numerical control.Principle of numerical control.
2.2. Exploration various modes of operation of numericalExploration various modes of operation of numericalcontrol.control.
3.3. Elements those are required for successful operationElements those are required for successful operationof numerical control.of numerical control.
4.4. Friendly with NC machine.Friendly with NC machine.
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COMPUTER AIDED PROCESSCOMPUTER AIDED PROCESS
PLANNINGPLANNINGTraditionally process planning is performedTraditionally process planning is performed
manually by highly experienced P & Omanually by highly experienced P & O planners, who process in depth knowledge of planners, who process in depth knowledge of
the modification.the modification.Moreover this in depth knowledge can beMoreover this in depth knowledge can be
intensively used through computer aidedintensively used through computer aided
process planning (APP) through: process planning (APP) through:--1.1. Variant approachVariant approach
2.2. Generative approachGenerative approach
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DATA EXCHANGEDATA EXCHANGE
This brilliant system operation can not beThis brilliant system operation can not be
functional without a successfulfunctional without a successful
communication system.communication system.
In fact the communication system can beIn fact the communication system can be
implemented through Parallel transmission oimplemented through Parallel transmission o
Serial transmission mode.Serial transmission mode.
Transmit Data Receive DataTransmit Data Receive Data
Request To Send Clear To SendRequest To Send Clear To Send
Data Terminal Ready Data Set ReadyData Terminal Ready Data Set Ready
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BIOMECHANICALBIOMECHANICAL--MANIPULATIONMANIPULATION
Therefore a quality CADTherefore a quality CAD ± ± socket is onlysocket is only
possible when the P & O engineer must have possible when the P & O engineer must have
manipulate himself within the frame work of manipulate himself within the frame work of
biomechanics, tissue mechanics, successive biomechanics, tissue mechanics, successive
finite element analysis and substantial loadingfinite element analysis and substantial loading
or metrical area.or metrical area.
Thus more understanding of mechanics refersThus more understanding of mechanics refers
to more comfortability & uniform loadingto more comfortability & uniform loading
process. process.
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SUCCESSFULSUCCESSFUL -- CADCAD -- SOCKETSOCKET
Better biomechanical understanding withBetter biomechanical understanding with
tolerable manipulation on the frame worktolerable manipulation on the frame work
of necessary data exchange can onlyof necessary data exchange can only
results a better & successful socketresults a better & successful socket
interface.interface.
BiomechanicBiomechanic Data Algorithm CASDData Algorithm CASD
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