Assembly of screw jack, Computer Aided Machine Drawing (CAMD) of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.

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3. • The details of a SCREW JACK are shown in Fig,. Assemble the parts of
the jack and draw the following views of the assembly when the top face of
the load bearing cup is raised to a height of 350 mm above the bearing
surface of the body.
1. Front view in half section.
2. Top view.
• Show only the important dimensions on the assembly drawing. Write the
title SCREWJACK.
• Add the item list,
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5. Part-1: Create body of the Screw jack
1. Select XZ Plane
2. Draw the 2D sketch as shown
3. Use revolved protrusion command to create 3D feature, Angle 3600
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6. Part-2: Create nut of the screw jack
1. Select XZ Plane
2. Draw the 2D sketch as shown
3. Use revolved protrusion command to create 3D feature, Angle 3600
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7. Part-3: Create Screw Spindle of the screw jack (Step-1)
1. Select XZ Plane
2. Draw the 2D sketch as shown
3. Use revolved protrusion command to create 3D feature, Angle 3600
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8. Part-3: Create Screw Spindle of the screw jack ( Step-2)
1. Select XZ Plane
2. Draw the 2D sketch as shown
3. Use Cut out command to create Symmetric through hole
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9. Part-3: Create Screw Spindle of the screw jack ( Step-3)
1. Select XY Plane
2. Draw the 2D sketch as shown
3. Use Cut out command to create Symmetric through hole
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10. Part-3: Create Screw Spindle of the screw jack ( Step-4)
1. Select the Plane as shown
2. Go to hole option, set the parameters as shown in dialogue box
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11. Part-4: Create CUP of the screw jack (Step-1)
1. Select XZ Plane
2. Draw the 2D sketch as shown
3. Use revolved protrusion command to create 3D feature,
angle 3600
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12. Part-4: Create CUP of the screw jack (Step-2)
1. Select XZ Plane
2. Draw the 2D sketch as shown
3. Use Cut out command to create the profile as shown
4. Use Circular pattern to create remaining features as shown
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13. Part-5: Create Special washer of the screw jack
1. Select XZ Plane
2. Draw the 2D sketch as shown
3. Use revolved protrusion command to create 3D feature, angle 3600
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14. Part-6: Create Special washer of the screw jack (Step-1)
1. Select XZ Plane
2. Draw the 2D sketch as shown
3. Use revolved protrusion command to create 3D feature, angle 3600
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15. Part-6: Create Special washer of the screw jack (Step-2)
1. Select top surface as shown
2. Draw the 2D sketch as shown
3. Use cut out command to create 3D feature, depth 3mm
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16. Part-6: Create Special washer of the screw jack (Step-3)
1. Select cylindrical surface as shown
2. Use thread command to create thread feature with the parameters as shown below
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17. Part-7: Create Tommy Bar of the screw jack
• Select XZ Plane
• Draw the 2D sketch as shown
• Use revolved protrusion command to create 3D feature, angle 3600
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