Final Presentation: Compressor Transport System & Layout P13458 - - PowerPoint PPT Presentation
Final Presentation: Compressor Transport System & Layout P13458 - - PowerPoint PPT Presentation
Final Presentation: Compressor Transport System & Layout P13458 RIT Senior Design Team May 10, 2013 10-10:30AM 09-2030 Dresser- Rand, Painted Post http://edge.rit.edu/edge/P13458/public/Home Agenda Problem Statement
Agenda
Problem Statement Accomplishments For The Transport System
Design History Final Design Summary Of Test Results Recommendations
Accomplishments For The Layout
Design History Final Design & Test Results Recommendations
Reflection On The D-R/RIT Partnership Reflection On Our Code Of Ethics
Problem Statement
Design a flexible material handling system that is easy to use and incorporates the safest design elements within cost and functionality
- constraints. This design
fully supports the new process layout in Dresser-Rand’s strategic project to increase capacity for the MOS compressor projected sales.
New Shop Floor 6-throw MOS Compressor
Transport System Design History
Design Considerations Long Beam Caster System Short Frame Caster System (Yellow Frame) Air Bearing Technology Free Support System Fixed Support System Modified Support System
Design Considerations
Movement nt Propul pulsi sion
Long Beam Caster System
Assumed entire
compressor assembly would be loaded, including cylinders
Assumed massive CG
changes while loaded
Large structural members
necessary
Short Frame Caster System
Yellow Frame Design Versatile – to account for
multiple product families
Modular – to account for
multiple product sizes
Could not be used at test
station
Was prototyped
Many design flaws
surrounding caster system
Air Bearing Technology
Unidirectional Nearly frictionless
Reduces horizontal force
required to 1lb per 1000lbs
Air supply is common in
industrial setting
Requires flat, smooth floor
surfaces
Free Support System
Based on the short frame
system
Adapted for air pallet use
Legs fixed to support beam Concerns regarding
clearance between floor and legs during movement
Fixed Support System
Vertical “legs” of the Free
system are now fixtures placed at each station
Eliminates floor clearance
concerns while moving from station to station
Simplifies manufacturing Easily integrated into
testing and shipping
Removable Support System
Conceptual design
Method of manufacture and
dimensions undetermined
Removable fixture attaches to
beam and acts like a jack stand
Overcomes flaws that were
revealed during the 3P event
Stress analysis not completed
results should be comparable
to the free system results
Removable Support Qualities
Pros
No more fixtures
Resolves ergonomic issues
discovered during the 3P event
Lowers move prep time – no
longer need to configure fixtures from station to station Bolt on legs removable for
test and shipping
Cons
Requires the floor to be
leveled
Test Results
Eng Metrics Target
- Value
Marginal Value Dir Summary for Phase I Prelim Design Current Status
- for
Caster System Prelim Design Test Plan Number
- f
Tests Required Results After Testing Additional Comments Time to move 5min 20min
- Tugger
should be able to move in under 20 minutes, however there are no actual speed specifications
- n
the device Measure time for prototype movement between station to station using a stopwatch, use heaviest compressor model as it will have the lowest acceleration 5 per station Did not measure time because full scale prototype and Air pallets were not
- rdered
yet Time to setup move 0min 10min
- Won't
know until final design, will depend
- n
type
- f
casters used and leveling system implemented Measure time for setup using a stop watch 5 per compressor model Full scale prototype never built Time to return 10min 30min
- Need
to finalize return process Measure the time to return prototype from the end
- f
the line to the cart storage location 5 Full scale prototype never built Cart Weight 1500lb 2500lb
- Current
Estimate: (air caster version was estimated at 1,160 lbs, airfloats catalog is down so I can't find the weights… to subtract
- ut)
Weigh protoype using a hanging scale 1 Weights were estimated based
- n
cadd data and material weights Eng Metrics Target
- Value
Marginal Value Dir Summary for Phase I Prelim Design Current Status
- for
Caster System Prelim Design Test Plan Number
- f
Tests Required Results After Testing Additional Comments Force to move 100lb 500lb + 300lb force necessary.
- Benchmark
research: tuggers can handle
- ver
500lbs Measure the strain in the tugger connection interface during movement
- f
the heaviest compressor using strain gauges 5 Actual tugger system was not
- rdered
yet Stays in Line 3ft 5ft + Need to finalize caster layout Mark the ideal path
- n
the floor, after moving the prototype to the next station measure the difference with a tape measure 5 cycles through stations 1-5 Covered through the 3P event.
- Moved
stations farther apart for more clearance Power Sources Required 1 2
- 1
Battery
- perated
Tugger Test capability
- f
a single tugger system to move each compressor model 1 per compressor model Not tested although Dresser Rand is working with Airfloat to make sure they have proper air capabilities Stopping distance 5ft 10ft
- Unsure
- f
safe deceleration value and therefore stopping distance Measure the distance it takes for each compressor model to coast to a stop from maximum velocity using a tape measure 5 per compressor model Air bearings stop immediately when air supply is cut Weight per cart 15T 10T + HOSS Will be included in cart design.
- 15T
capabilities are met. Combine measured cart weight with Dresser Rand's data
- n
compressor weight 1 Data can be derived from cadd models and known material weights Metric Value
P13458: House
- f
Quality & Test Plan
3/15/13 5/7/13
Recommendations
Modify testing station to incorporate free-system design
Possible lifting/attachment to test bed
Determine lifting/loading method
Need 3-axis positioning without a crane Modified Grey Portable Lifting system for vertical lifting Back truck under lifted compressor
Air bearings under truck bed Driver positioning
Layout Design History
Took dimensions of required
equipment and space for each station in the assembly, test, and paint process in the current state
Created factors of varying
importance
Designed 4 different layouts – 2
straight-line, 2 U-shaped – in the new shop floor
Conducted a 3P event on a U-
shaped layout using cardboard to check theoretical values against actual feedback from operators and line side managers
3P Event Result Factors Affected Status Tested U-shape design Returnability Flexibility Pass-by/Pass-through Added new cylinder assembly flow line Space Utilization Inventory Access Operators and managers evaluated the layout and gave feedback on parts and people flow and equipment requirements Inventory Access Ease of Movement by Operator Movement Time Found hidden problems and constraints i.e. spacing between stations, jib crane requires oil pump station next to column Space Utilization Maintenance Access Tested – good outlook Needs further testing, but predict a good outlook Needs attention, was not addressed
Final design
Top Level Assembly Level Flow
Recommendations
Re-evaluate test bay requirements for sizing and safety –
retractable blast walls
Add in and test inventory flow and information flow Understand exact requirements and locations for
energy/power/air sources
Full dimensioning of layout Computer simulation of process flow Continuous evaluation and improvement 5S taping and marking to indicate specific areas, i.e. operator
walking zone inside cell, in-process kanban, visitor aisle way
Identify and allocate future expansion area
Reflection on the DR/RIT Partnership
Overall, very successful learning experience Design process
Iterative in nature – lots of ‘back to the drawing board’ moments Conceptualization and the funnel of idea development
Understanding fluctuating customer needs Efficiency of communication Recommend a “consulting” contract be completed at the start
To better establish the needs of Dresser Rand So the team can better prioritize efforts
Recommend creating a communications protocol to prevent
delay in work as the team awaits feedback
Reflection On Our Code Of Ethics
Code of Ethics Components Assessment Recommendations
Expectations for Team Behavior: Honesty, Respect, Accountability, Professional and Thorough Communication Good communication during meetings, but email communication was not responded to in a timely manner. Also, accountability could have been better during MSD II. Better individual time management, check email twice daily and respond Expectations for Integrity of Assigned Tasks: Tasks should be completed on-time and with the quality expected as seen in the MyCourses documentation and as discussed during assignment of the tasks Completion of tasks was not always done
- n time, therefore resulting in wasted
team meeting time catching up on work. Better individual time management, more thorough and clear description
- f tasks
Not Meeting Expectations: Any complaints or inability of meeting expectations should be shared with the team in order to provide more resources and/or time, or reassign task to another member Many tasks completed last minute and the individuals did not inform the team
- f their status or ask for help as often as
they should have. Mid-week check-ins, project manager emphasizes team effort - offer help to
- thers when your workload is light
3 out of 11 components were not followed satisfactorily