1 / 20

COMPACT MOBILE LIFTING DEVICE

COMPACT MOBILE LIFTING DEVICE. Innovative Lifting Solutions. Team 99.03 Michael Shaffer, Ken Kammerer, Dave Geesaman, Jin Ko Sponsor: Jim Adkins, Fraunhofer Advisor: Dr. Michael Keefe. Hot Press Thermal Technology Inc. Loaded / Unloaded daily. Injection Molding Machine

lieu
Télécharger la présentation

COMPACT MOBILE LIFTING DEVICE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. COMPACT MOBILE LIFTING DEVICE Innovative Lifting Solutions Team 99.03 Michael Shaffer, Ken Kammerer, Dave Geesaman, Jin Ko Sponsor: Jim Adkins, Fraunhofer Advisor: Dr. Michael Keefe

  2. Hot Press • Thermal Technology Inc. • Loaded / Unloaded daily

  3. Injection Molding Machine • Arburg AllRounder S-Series • Loaded/Unloaded roughly once per month

  4. Mission and Approach • Mission: • To design and build a mobile device which will aid a user in lifting, moving, and placing heavy molds into an injection molding machine and a hot press. • Approach: • After examining existing positioning, transporting, and lifting methods, we designed a custom system which met the unique wants and constraints at Fraunhofer.

  5. Customers • James Adkins Lab Coordinator • Don Kupp Supervisor • Michelle Mattera Lab Technician • Brandon Fichera Lab Technician • Bernie McGuinness Lab Technician • Thermal Technologies, Inc. Equipment Manufacturer • Arburg Manufacturing Equipment Manufacturer • Bishamon Lift Manufacturer

  6. Wants Description Relative emphasis • Versatility 46% • Fast Operation 35% • Minimal the amount of manual lifting 17% • Easily Maneuverable 13% • Minimal Reaction Forces on Machines 7% • Low Prototype Cost 5% • Low Cost of Manufacture 2% • Low Maintenance Cost 1%

  7. Constraints Our Solution must... • load the objects without failure • fit in working areas adjacent to machines • maneuver through doors, hallways on premises • reach injection molder at 46” (max. height) • reach mold storage rack at 26” (min. height) • have safety locks on all moving parts • be operable by a single user • withstand use in a commercial situation • not damage objects being manipulated

  8. PrimaryWants and their Metrics Versatile: Interfaces with all devices (Target: Yes) Fast operation: Time to load & unload (Target: 15 minutes) Time to convert between modes of operation (Target: 0 sec) Minimal Lifting: Power input by user (Target: 0 H.P.) Maneuverable: Pushing forces (Target: 20 pounds) Overall weight (Target: 400 pounds) Minimize forces on Machines: Forces (Target: 0 pounds)

  9. Primary Wants and their Metrics Minimize cost of prototype: No. of standardized parts (Target: All) Minimize cost of Manufacture: No. of standardized parts (Target: All) Minimize cost of Maintenance: No. of standardized parts (Target: All) Cost to replace failure-sensitive components (Target: $0)

  10. Top SixMetrics Description Relative Emphasis • Time to convert between modes 12.8% • Number of Commercially available parts 10.6% • Time to move object into position 9.2% • Power input by user 8.5% • Number of machines device can interface with 7.8% • Overall weight 6.4%

  11. Benchmarking Devices Key Points • Lift carts • Chain Hoists • Drawer Slides • Linear Bearing Systems • Lifting • Maneuvering • Swiftness • Low user effort • Commercially available • Compact

  12. ConceptGeneration • Interface with both machines: • Fork system • Lifting: • Scissors lift, fork lift, hoists • Maneuverability: • Caster wheels, air cushion • Positioning: • Drawer slides, linear bearings, UHMWP

  13. Concept1: SlidingForklift • Strengths: • Forks provide versatility • Time to convert is low • Commercially available parts • Drawer slides / linear rails allow • positioning • Hydraulic lift cart provides lifting • and mobility via caster wheels

  14. Concept2: Fold-outLow-FrictionTabletop • Strengths: • Versatile • Commercially available parts • Fast positioning via UHMWP • Hydraulic lift cart provides lifting • and mobility via caster wheels

  15. Concept Selection • Final Concept:Hybrid • 1) Mobility: Caster Wheels • Low cost, commercially available, adequate maneuverability • 2) Lifting: Hydraulic Scissors Lift • Precise height control, good extension / overall size ratio • 3) Positioning: Modular Fork • Low-Friction Platform • Linear Bearings • Modular design offers compatibility with current and future applications

  16. Analysis / Theory Elastic Solid Mechanics, Static Analysis • Design Criteria: • Deflection • Stress-life Design • Bearing Design • Analysis Methods: • Beam Model with Stress Concentration Factors • Beam Model using TK Solver • Finite Element Analysis (COSMOS/Works)

  17. Prototype Commercially Purchased Parts: • Bishamon LPM-50 Lift Table • Thomson DB Series Linear Rails • Screw - down clamps (locks) • Custom Machined Parts: • Structural Forks and Platforms (6061-T6 Aluminum) • Low-Friction Sheeting (UHMW Polyethylene) • Assembly: • Allen Cap Screws, Flat-head Machine Screws, nuts, washers • Dowel Pins

  18. Testing and Results Interfacing with all machines and molds Deflections of loaded members and assembly Stability / Tipping forces Conversion time Loading and unloading time Maneuverability Forces required by user for operation Wheel locks found insufficient Cart not level

  19. Budget • Off-the-Shelf or Commercially Available items • · Hydraulic scissors lift cart $795 • · Linear bearings $1156 • · Fasteners (nuts, bolts, washers, etc.) $100 • Raw Materials • · Aluminum Stock $190 • Wooden Model $60 • Machining Time (33 hours) $0 • Engineering Development (400 hours) $0 • Miscellaneous $90 • TOTAL: $2391 Fraunhofer Project Budget Goal: $3000

  20. Recommendations: • Forks made from alternative materials • Additional fork(s) for interfacing with future machines • Improved wheel locking system • Motorization and control of lifting and positioning • Accessories bin for on-board parts storage

More Related