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InVision Concept Modeler Program Review Engineering & Quality

InVision Concept Modeler Program Review Engineering & Quality. 12-February-2007. 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

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InVision Concept Modeler Program Review Engineering & Quality

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  1. InVision Concept ModelerProgram ReviewEngineering & Quality 12-February-2007

  2. 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

  3. 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

  4. 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

  5. Print head Adaptor v3.40 - Baffle • Reduction of air entrainment – Add baffle (Support side only) New print head part no. = 300212-01

  6. Vacuum System v3.40 – Stabilize vacuum system Add 2L bottle to stabilize operation of pressure regulator / 0.5L remains

  7. 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

  8. Clamp Feed v3.40 - Guiding Grommet strips to cartridge guides

  9. Print head v3.40 - Print Head Priming Rotate Print head 135° to remove trapped air • \\us-bur-na01\groups\US-GJ-MS03\Doc Control Center\PUBLICATIONS\InVision\inverted printhead procedure_Rev.zip • Provided inside upgrade kit

  10. Print head

  11. Plunger v3.40 - Software Single motion to a “Plunge to Hold”

  12. 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

  13. 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

  14. Needle Housing v3.41 – New design Redesigned needle housing to improve ejection of cartridge without hang Old revision New design

  15. 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

  16. Clamp Feed V3.41 - Plungers Added stops to eliminate rotation of the plunger screws

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

  18. 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

  19. ~ 20 mm 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

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

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

  22. Print head Adaptor v3.42 Redesigned Print Head Adaptor with larger internal chambers Surface Area Old design ~ 1 300 mm2 New ~ 2 077 mm2

  23. 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

  24. 2.300” (58.4 mm) 1.400” (35.6 mm) 2.300” (58.4 mm) 1.400” (35.6 mm) 2.750” (69.9 mm) Print head Adaptor v3.42 Redesigned Print Head Adaptor with larger internal chambers Surface Area Old desgn ~ 1 300 mm2 New ~ 2 077 mm2

  25. 0.200” (5.1 mm) Print head Adaptor V3.42 Redesigned Print Head Adaptor with LOMS off-set to accommodate difference in material densities Support Build

  26. Cartridge Clamp Needle housing Cartridge Tip & Needle Housing aligned properly Cartridge Tip Cartridge not held snug Cartridge tip not aligned to needle housing Clamp Feed v3.42 - Alignment of cartridge tip to needle housing • Moved clamps inward to center cartridge to the needle housing

  27. 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

  28. 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

  29. 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

  30. 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

  31. 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 < 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

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

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