Kinematics and Dynamics Simulation of the Slider-crank Mechanism Based on Matlab / Simulink
Milwaukee Electric Tool Slider-Crank Analysis and test
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Transcript of Milwaukee Electric Tool Slider-Crank Analysis and test
MILWAUKEE ELECTRIC TOOL
SLIDER-CRANK ANALYSIS AND TEST
Khaled Alaassmi and Majid Al Qutaim
Project Goal The goal of the project is to determine
the offset that provides the best cutting performance for M-18 Sawzall.
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
Displacement Analysis of Offset Slider Crank Mechanism Using a Vector Loop Closure Equation:O2A = O2D + DB + BA
D
a
bc
Velocity Analysis Equations
Acceleration Analysis Equations:
Analysis using the “Linkages” software from Robert L. Norton, Design of Machinery, 5ed
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
Analysis Using Linkages Software
At an offset of C=0.78 in
Analysis Using Linkages Software
At an offset of C=0 in
Analysis Using Linkages Software
At an offset of C = -0.78 in
Designing Slider Crank Using Pro-Engineer Wildfire 5
Pro E Analysis At offset of C= 0.78 ”
Pro E analysis At offset of C= 0 ”
Pro E analysis At offset of C= -0.78 ”
Physical Testing
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
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
Recommendation Use the Prototype Fixture to Design a
Metal Fixture.
Acknowledgements Roger Neitzell Milwaukee Electric Tool Corporation
Questions ?