1. P14551: Multi-process 3D Printer Critical Subsystem Review
Group Members:
Jeremy Bennett
Austin Chacosky
Matt Demm
Nick Hensel
Chad Rossi
Customer:
Dr. Dennis Cormier
Guide:
John Kaemmerlen

2. Agenda Background Critical Subsystems Sub-Critical Subsystems
Electrical/Mechanical Head Interface Subsystem
Storage Subsystem
Sub-Critical Subsystems
Non-Critical Subsystems

3. Single Process 3D Printers
Multi-Process 3D Printer
Multi-Proto Lab
Single Process 3D Printers
Open Source CNC Mill
Speaker: Austin

4. Architecture
Speaker: Nick

5. Agenda Background Critical Subsystems Sub-Critical Subsystems
Electrical/Mechanical Head Interface Subsystem
Storage Subsystem
Sub-Critical Subsystems
Non-Critical Subsystems

6. Electrical/Mechanical Head Interface Subsystem Pugh Chart1 2 3 4
EMHI Subsystem
Tongue and Solenoid with 2 Alignment Pins
Shaft and Solenoid with 1 Alignment Pinn
Solenoid Driven Locking Arms
Ball Bearing/Roller Bearing Alignment
Parameter Number
Criteria Number
Conceptual Image Judgement Criterion
Linear Alignment (X,Y,Z) D S - +
Rotational Alignment A
Active-off Mechanical Connection T
Reliability of Electrical Connection U 5
Amount of Custom Parts M 6
Machining Complexity 7
Ease of Servicing Unit 8
Complexity of Release Mechanism 9
Overall Cost ? 10 11 12 13 14
Total (+)
Total (-)
Net Score -6
Speaker: Matt

7. Electrical Mechanical Head Interface Selected Design
Speaker: Matt

8. EMHI Concept

9. EMHI Concept

10. EMHI Concept

11. Storage Subsystem Pugh Chart1 2 3 4 5 6
Process Head Storage Subsystem
Horizontal Pins with Z Motion
Horizontal Pins with Spring Loading
Solenoid-Driven Pin Locking (Back Plate)
Solenoid-Driven Pin Locking (Side Plates)
Magentic Storage
Vertical Pins with Z Motion
Parameter Number
Criteria Number
Conceptual Image Judgement Criterion
Required Range of Z Motion D + -
Complexity of Storage Area Element A
Complexity of Process Head Element T S
Machining Complexity U
Estimated Cost M
Added Space Envelope for Storage 7
Stablility Without Power 8
Number of Actuating Elements 9
Precision/Repeatability of storage location 10 11 12 13 14
Total (+)
Total (-)
Net Score -4 -2 -1
Speaker: Nick

12. Storage System Selected Design
Speaker: Nick

13. Storage System Concept

14. Storage System Concept

15. Motion System Concept
Same selection process as EMHI and Storage Subsystem
Belt Drive X and Y, and ball screw Z picked for cost (X & Y) and precision (Z)
Looked at multiple rail systems, existing open source solutions.

16. Motion System Concept

17. Motion System Concept

18. Analysis
At this point, we have primarily focused on developing the framework of the system to verify that we can fit our conceptual designs into the available space envelope.

19. Agenda Background Critical Subsystems
Electrical/Mechanical Head Interface Subsystem
Storage Subsystem
Motion Subsystem
Sub-Critical & Non-Critical Subsystems

20. Sub-Critical and Non-Critical Subsystems
Sub-Critical Subsystems
Non-Critical Subsystems
Enclosure
Safety System
Power Supply
Exact HRMT Design
Computer Controller
Motion Control
User Interface
Bed System
Speaker: Chad

21. Questions/Comments?
Thank You

22. Electrical/Mechanical Head Interface Subsystem Ideas1 3 4 2

23. Storage Subsystem Ideas4 1 5 2 6 3

24. Motion Control Pugh Chart1 2 3 4
Process Head Storage Subsystem
Basic Cartesian Ball & Belt Drive
Basic Cartesian Lead & Chain Drive
Complex Cartesian Ball & Belt Drive
Wench - Cable Drive
Parameter Number
Criteria Number
Conceptual Image Judgement Criterion
Technical Difficulty S -
Motion System Cost D +
Load Bearing Capability ?
Accuracy (X) A 5
Max Drive Speed (X) 6
Accuracy (Y) T 7
Max Drive Speed (Y) 8
Accuracy (Z) U 9
Max Drive Speed (Z) 10
Maintenance Requirements M 11 12 13 14
Total (+)
Total (-)
Net Score -1 -4

25. Motion Control Ideas 1 3 2 4