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Describe, with the aid of a suitable diagram, one method used to secure a nylon gearwheel to the shaft of the DC motor shown. - Leaving Cert Engineering - Question m - 2012
Question m
Describe, with the aid of a suitable diagram, one method used to secure a nylon gearwheel to the shaft of the DC motor shown.
Worked Solution & Example Answer:Describe, with the aid of a suitable diagram, one method used to secure a nylon gearwheel to the shaft of the DC motor shown. - Leaving Cert Engineering - Question m - 2012
Step 1
Describe the Method to Secure the Gearwheel
Answer
To secure a nylon gearwheel to the shaft of a DC motor, one effective method involves using a slotted grub screw.
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Positioning the Gearwheel: The nylon gearwheel is designed with a threaded hub that is placed over the motor shaft.
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Inserting the Grub Screw: A slotted grub screw is inserted into a hole on the side of the gearwheel that aligns with the flat portion of the motor shaft. This screw engages with the motor shaft, firmly securing the gearwheel in place.
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Tightening the Grub Screw: By tightening the grub screw, it presses against the shaft, preventing any slippage between the gearwheel and the motor shaft.
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Final Inspection: It is important to check that the gearwheel is securely fastened and rotates freely without any obstruction.
Diagram: (Include a diagram here depicting the setup as shown in the marking scheme, indicating the motor shaft, gear, and slotted screw.)