milwaukee electric tool slider-crank analysis and test
DESCRIPTION
Khaled Alaassmi and Majid Al Qutaim. Milwaukee Electric Tool Slider-Crank Analysis and test. Project Goal. The goal of the project is to determine the offset that provides the best cutting performance for M-18 Sawzall . . Cutting Geometry A=12.2mm= 0.4803 in - PowerPoint PPT PresentationTRANSCRIPT
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MILWAUKEE ELECTRIC TOOL
SLIDER-CRANK ANALYSIS AND TEST
Khaled Alaassmi and Majid Al Qutaim
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Project Goal The goal of the project is to determine
the offset that provides the best cutting performance for M-18 Sawzall.
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Cutting GeometryA=12.2mm= 0.4803 inB= 56.9 mm= 2.24 inC= 19.812 = 0.78 in
A C
B
Angle = z
Pin A
XOut
Drive Gear
Direction of Rotation
C = Offset
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Displacement Analysis of Offset Slider Crank Mechanism Using a Vector Loop Closure Equation:O2A = O2D + DB + BA
D
a
bc
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Velocity Analysis Equations
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Acceleration Analysis Equations:
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Analysis using the “Linkages” software from Robert L. Norton, Design of Machinery, 5ed
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Analysis using linkages software Linkage software was used to make the
analysis at 3 different offsets Offset of 0.78 in Offset of 0 in Offset of -0.78 in
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Analysis Using Linkages Software
At an offset of C=0.78 in
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Analysis Using Linkages Software
At an offset of C=0 in
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Analysis Using Linkages Software
At an offset of C = -0.78 in
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Designing Slider Crank Using Pro-Engineer Wildfire 5
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Pro E Analysis At offset of C= 0.78 ”
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Pro E analysis At offset of C= 0 ”
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Pro E analysis At offset of C= -0.78 ”
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Physical Testing
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Physical Testing 2 different offsets 10 runs each offset At an offset of 0.78 in and 0 in The average cutting time for each offset
was calculated Test was performed on 2 x 4” wood. The applied load on the blade was 7.4 lb
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Physical testingCutting performance = Time required to cut through 2x4 pine board
At C = 0 in, Tavg = 8.9 s, sd= 1.4
At C = 0.78 in, Tavg = 6.3 s, sd= 0.3
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Recommendation Use the Prototype Fixture to Design a
Metal Fixture.
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Acknowledgements Roger Neitzell Milwaukee Electric Tool Corporation
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Questions ?