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Which therbligs correspond to which activities? 1.Lift and move wrench toward screw 2.Reposition wrist and hand 3.Move wrist and finger in preparation for turning 1-Transport loaded, 2-position, 3-Transport empty

Which therbligs correspond to which activities? 1.Lift and move wrench toward screw 2.Reposition wrist and hand 3.Move wrist and finger in preparation for turning 1-Transport loaded, 2-position, 3-Transport empty

Precision Machining Technology (MindTap Course List)
Precision Machining Technology (MindTap Course List)
2nd Edition
ISBN:9781285444543
Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Chapter8: Computer Numerical Control
Section8.5: Introduction To Cnc Milling
Problem 6RQ
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9- Description: Suppose that in a workplace, a worker reachs for a wrench, then pauses a little bit while looking for the correct size from the group of wrenches in a box. Having found the correct size, he lifts it and position it into the screw socket that has previously been hand-turned into a threaded hole in the work unit. He then twirls the wrench handle with one continuous finger and wrist motion until the screw has been rotated six turns. At that time, he grips the wrench handle with his hand and tightens the screw the last quarter turn. Which therbligs correspond to which activities? 1.Lift and move wrench toward screw 2.Reposition wrist and hand 3.Move wrist and finger in preparation for turning a) 1-Transport loaded, 2-position, 3-Transport empty b) 1-Grasp, 2-position, 3-Transport empty c) 1-Grasp, 2-Transport empty, 3-Transport empty d) 1-Transport empty, 2-position, 3-transport empty e) O 1-Transport loaded, 2-Transport empty, 3-Transport empty
Transcribed Image Text:9- Description: Suppose that in a workplace, a worker reachs for a wrench, then pauses a little bit while looking for the correct size from the group of wrenches in a box. Having found the correct size, he lifts it and position it into the screw socket that has previously been hand-turned into a threaded hole in the work unit. He then twirls the wrench handle with one continuous finger and wrist motion until the screw has been rotated six turns. At that time, he grips the wrench handle with his hand and tightens the screw the last quarter turn. Which therbligs correspond to which activities? 1.Lift and move wrench toward screw 2.Reposition wrist and hand 3.Move wrist and finger in preparation for turning a) 1-Transport loaded, 2-position, 3-Transport empty b) 1-Grasp, 2-position, 3-Transport empty c) 1-Grasp, 2-Transport empty, 3-Transport empty d) 1-Transport empty, 2-position, 3-transport empty e) O 1-Transport loaded, 2-Transport empty, 3-Transport empty
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