Unit -2 ROBOT DRIVE SYSTEMS AND END EFFECTORS. Drive Systems  Capacity to move robot’s body, arm and wrist  Determine speed of the arm movements, strength.

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Presentation transcript:

Unit -2 ROBOT DRIVE SYSTEMS AND END EFFECTORS

Drive Systems  Capacity to move robot’s body, arm and wrist  Determine speed of the arm movements, strength of the robot & dynamic performance  Type of applications that the robot can accomplish  Powered by three types of drive systems: 1.Hydraulic 2.Pneumatic 3.Electric 27 August 2016Cont.2

Drive Systems.. 27 August 2016Cont.3

Drive Systems.. 1.Hydraulic Drive Associated with large robot Provide greater speed & strength Add floor space Leakage of oil Provide either rotational or linear motions Applications such as: Spray coating robot Heavy part loading robot Material handling robot Translatory motions in cartesian robot Gripper mechanism 27 August 2016Cont.4

Drive Systems.. 1.Hydraulic Drive.. 27 August 2016Cont.5

Drive Systems.. 1.Hydraulic Drive.. 27 August 2016Cont.6

Drive Systems.. 2.Pneumatic Drive Reserved for smaller robot Limited to “pick-and-place” operations with fast cycles Drift under load as air is compressible Provide either rotational or linear motions Simple and low cost components Used to open and close gripper 27 August 2016Cont.7

Drive Systems.. 27 August 2016Cont.8

Drive Systems.. 3.Electric Drive Rotor, stator, brush and commutator assembly Rotor has got windings of armature and stator has got magnets The brush and the commutator assembly switch the current in armature windings The most commonly used are DC servomotors, AC servomotors and stepper motors 27 August 2016Cont.9

Drive Systems.. 3.Electric Drive.. Servomotor 27 August 2016Cont.10

Drive Systems.. 3.Electric Drive.. 27 August 2016Cont.11

Drive Systems.. 3.Electric Drive.. 27 August 2016Cont.12