InVision%20Concept%20Modeler%20Program%20Review%20Engineering%20

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InVision Concept ModelerProgram
ReviewEngineering Quality

• 12-February-2007

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InVision Upgrades

• History
• v3.38
• v3.40
• Pause build on long cartridge change out
• Stop high vacuum condition
• Add baffle to Print head adaptor
• Addition of 2L vacuum bottle
• Change vacuum set point 5.00 5.75
  inches of H2O
• Replace nylon fittings with brass on Print head
  adaptor
• Grommet strips to clamp feed guides
• Modified needle housing collar (removed material)
• Removed potting from vacuum switch

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InVision Upgrades

• History
• v3.41 (Current)
• Add mechanical flags to stop support material
  (S100) cartridge plunger 20mm short to stop
  excessive air from entering the fluid delivery
  system
• Z guides added
• Grounding blocks to eliminate lead screws from
  turning
• New needle house stripper
• New needle housing coating heater
• Replace HMS bushings with bearing sleeves

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InVision Upgrades

• History
• v3.42 (Testing)
• Better positioning of cartridge to needle housing
• Tighter holding of cartridge
• Plunge to hold sequence modified to simulate drum
  feed plunge movement while checking LOMS level
• Reduce Pushed wax condition
• Reduce Mega pixel errors
• Reduce Ratio errors
• HMS damaged after Print head moves after
  X-following error
• Build material expiration change to 2 years

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Print head Adaptor

• v3.40 - Baffle
• Reduction of air entrainment Add baffle
  (Support side only)

New print head part no. 300212-01
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Vacuum System

• v3.40 Stabilize vacuum system
• Add 2L bottle to stabilize operation of pressure
  regulator / 0.5L remains

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Vacuum System

• v3.40 - Vacuum Stabilization
• Changed set point and switch of pressure
  regulator to 5.75 H20 to better accommodate
  material densities
• Vacuum level being set at supplier location
• Vacuum setting confirmed at the contract
  manufacturing location and adjusting in the field
  should not be necessary
• Resellers should not be adjusting vacuum levels
  independent of 3D Systems knowledge

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Clamp Feed

• v3.40 - Guiding
• Grommet strips to cartridge guides

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Print head

• v3.40 - Print Head Priming
• Rotate Print head 135 to remove trapped air
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  Center\PUBLICATIONS\InVision\inverted printhead
  procedure_Rev.zip
• Provided inside upgrade kit

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Print head
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Plunger

• v3.40 - Software
• Single motion to a Plunge to Hold

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Plunger

• v3.40 - Software
• Single motion to a Plunge to Hold

Single movement of plunger to fixed position -
not based on LOMS level in adaptor Pressurizes
cartridge
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Plunger

• v3.42 - Software
• Implemented software 3.42 to improve cartridge
  guiding during the plunge to hold move. This also
  makes the plunge to hold move LOM sensor based
  (currently in final test stages)

Step by step - Movement of plunger based on LOMS
level in adaptor
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Plunger

• v3.42 - Software
• Implemented software 3.42 to improve cartridge
  guiding during the plunge to hold move. This also
  makes the plunge to hold move LOM sensor based
  (currently in final test stages)

Step by step - Movement of plunger based on LOMS
level in adaptor
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Needle Housing

• v3.41 New design
• Redesigned needle housing to improve ejection of
  cartridge without hang

Old revision
New design
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Needle Housing

• V3.41 Design changes
• Redesigned needle housing to improve ejection of
  cartridge without hang

Extended the bearing length of collar
Add Teflon hard coated both surfaces
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Clamp Feed

• V3.41 - Plungers
• Added stops to eliminate rotation of the plunger
  screws

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Mechanical Improvements

• v3.41 - Z Guides
• Added Z guiding to cartridge guide path to
  insure cartridges descend properly within clamp
  mechanism

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Mechanical Improvements

• v3.41 - Software
• Implemented software 3.41 to eliminate air from
  entering into the fuild delivery system

Any air in S100 support cartridge would enter the
fuild delivery system when cartridge 100
dispensed
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Mechanical Improvements

• v3.41 - Adding Flags
• Flags to stop the plunger 20 mm short to
  eliminate excessive air from being pushed in
  fluid delivery systems

Sensor
Added flags to stop the S100 support cartridge
200 mm to eliminate air in cartridge from
entering the fluid delivery system
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Print head Adaptor

• v3.42
• Larger Print head Adaptor with direct connect (no
  tubes)
• NEW

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Print head Adaptor

• v3.42
• Larger Print head Adaptor with direct connect (no
  tubes)
• OLD

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Print head Adaptor

• v3.42
• Redesigned Print Head Adaptor with larger
  internal chambers

Surface Area Old design 1 300 mm2
New 2 077 mm2
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Print head Adaptor

• v3.42
• Redesigned Print Head Adaptor with larger
  internal chambers

2.300 (58.4 mm)
1.400 (35.6 mm)
2.750 (69.9 mm)
Surface Area Old design 1 300 mm2
New 2 077 mm2
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Print head Adaptor

• v3.42
• Redesigned Print Head Adaptor with larger
  internal chambers

2.300 (58.4 mm)
1.400 (35.6 mm)
Surface Area Old design 1 300 mm2
New 2 077 mm2
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Print head Adaptor

• v3.42
• Redesigned Print Head Adaptor with larger
  internal chambers

Surface Area Old desgn 1 300 mm2
New 2 077 mm2
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Print head Adaptor

• V3.42
• Redesigned Print Head Adaptor with LOMS off-set
  to accommodate difference in material densities

Support
Build
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Clamp Feed

• v3.42 - Alignment of cartridge tip to needle
  housing
• Moved clamps inward to center cartridge to the
  needle housing

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Clamp Feed

• v3.42 - Alignment of cartridge tip to needle
  housing
• Moved clamps inward to center cartridge to the
  needle housing

Cartridge
Clamp
Needle housing
Cartridge Tip Needle Housing aligned properly
Cartridge Tip
Cartridge not held snug Cartridge tip not aligned
to needle housing
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Clamp Feed

• v3.42 - Alignment of cartridge tip to needle
  housing
• Moved clamps inward to center cartridge to the
  needle housing

Cartridge
Cartridge tip not aligned to needle housing
Needle
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Clamp Feed

• v3.42 - Alignment of cartridge tip to needle
  housing
• Moved clamps inward to center cartridge to the
  needle housing

Cartridge
Cartridge tip is better aligned to needle housing
Needle
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Invision Clamp Feed System
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HMS / Software

• v3.42 Program change
• Redesign the build carriage to use bearings and
  eliminate use of bushings
• X Following error caused by excessive force
• Print head homes while the HMS engaged

Bearing part number 11855-119-00 Need to order
2 bearings
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Material Improvements

• SR200/HR200/DP200
• 2 year expiration date build material
  manufactured after 01-Jan-2007
• Eliminate unnecessary RMA / Returned material
• Customer complaints on receipt of material with lt
  6 months expiry date
• Software v3.42 will accommodate material produced
  prior to 01-Jan-2007
• Added stabilizer to eliminate clogged jets, waste
  tanks and waste umbilical when build and support
  materials reacting when co-mixing

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RMA / Returns

• All part returns should be coordinated with Frank
  Vullhorst
• Non-conforming parts should be returned to UPS
  Col. Using a RMA