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COMPOUND MACHINES Combining knowledge about Simple Machines and basic Machine Elements.

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Page 1: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system

COMPOUND MACHINES

Combining knowledge about Simple Machines and basic Machine Elements.

Page 3: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system

Kinematic Pairs

Two rigid bodies moving with respect to one another.

Made possible, by...

Page 4: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system

Joints

A mechanical constraint that connects kinematic pairs and controls the “Degrees of Freedom” of a mechanism.

Page 5: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system

Varieties of Joints

Prismatic Joint Revolute Joint Cylindrical Joint

Page 6: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system

Varieties of Joints

Screw Joint(Linear Actuator) Ball and Socket Joint

Page 7: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system

Universal Joint (U-Joint)

Page 8: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system

Degrees of Freedom (DOF)

Set of possible displacements, rotations that define the position & orientation of a body/system.

weird!

Page 9: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system

Categories of Compound Machines:

- Linkages (More on this later)

- Geared Motion- Reciprocating / Oscillating- Cams and Cam-Followers- Intermittent Motion

Page 11: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system

Geared MotionRACK AND PINION

Page 16: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system
Page 23: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system
Page 24: COMPOUND MACHINES - mkontopoulos.com · Universal Joint (U-Joint) Degrees of Freedom (DOF) Set of possible displacements, rotations that define the position & orientation of a body/system