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Details of a miniature Bench Vice are shown in Fig - Leaving Cert DCG - Question C-5 - 2014
Question C-5
Details of a miniature Bench Vice are shown in Fig. C-5. The vice is adjustable and can be tilted and rotated. A parts list and a 3D graphic of the parts are also gi... show full transcript
Worked Solution & Example Answer:Details of a miniature Bench Vice are shown in Fig - Leaving Cert DCG - Question C-5 - 2014
Step 1
Sectional elevation of the Bench Vice
Answer
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Outline of the Base: Start by drawing a rectangular base to scale. Ensure that the dimensions are correct as provided in Fig. C-5.
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Draw the Swivel Shaft: Position the swivel shaft in accordance with the given dimensions. Draw the cylindrical part and the supporting bracket.
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Add the Clamping Nut: Sketch the clamping nut above the base. Include the outlined features and internal parts as shown.
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Draw the Fixed Jaw: Illustrate the fixed jaw according to the dimensions specified in the marking scheme. Detail the rectangular and jaw portion.
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Draw the Moving Jaw and Crossbar Nut: Sketch the moving jaw that slides horizontally. Add the crossbar nut feature and ensure the inner detail includes the slot and two holes as per the provided information.
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Adjusting Screw: Include the adjusting screw with correct dimensions—indicate the right hand end, middle portion, and threaded bar.
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Retaining Screw: Draw the retaining screw as shown in the diagram, detailing the screw head and cylindrical end.
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Completion: Finalize the drawing with appropriate hatching, centrelines, and ensure that dimensions are clear and readable.
Step 2
Position of P after Closing and Rotation
Answer
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Establish P in Closed Position: When the jaws are closed, mark Point P in its final position according to the vice's design. This represents the position when no objects are being clamped.
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Location of P after Rotation: After tilting the vice fully to the left, adjust Point P accordingly. Indicate the angle of rotation and ensure that it reflects the fully closed position with the jaws in place.