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Solidworksbi_tool~5 mins

Revolved surface in Solidworks - Cheat Sheet & Quick Revision

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Recall & Review
beginner
What is a revolved surface in SolidWorks?
A revolved surface is a 3D shape created by rotating a 2D profile around an axis. It forms smooth curved surfaces like cylinders or cones.
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beginner
Which axis is used to create a revolved surface?
The axis is a straight line around which the 2D profile is rotated to form the revolved surface.
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beginner
True or False: A revolved surface must always complete a full 360-degree rotation.
False. You can create a revolved surface by rotating the profile less than 360 degrees to form partial shapes.
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intermediate
What is the difference between a revolved surface and a revolved solid?
A revolved surface is hollow and only has the outer skin, while a revolved solid is a full 3D object with volume.
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beginner
Name one practical example of a revolved surface in everyday objects.
Examples include bottles, cups, wheels, or any object with circular symmetry formed by rotation.
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What do you need to create a revolved surface in SolidWorks?
AA 3D sketch and a plane
BA 2D profile and an axis of rotation
CA solid body and a face
DA 2D profile and a color
If you rotate a profile 180 degrees instead of 360 degrees, what do you get?
AA partial revolved surface
BA full revolved surface
CA solid body
DNo surface
Which of these is NOT a characteristic of a revolved surface?
AHas volume like a solid
BSmooth curved shape
CCreated by rotation
DUses an axis
What shape can a revolved surface NOT create?
ACylinder
BSphere
CCone
DCube
Why might you use a revolved surface instead of a revolved solid?
ATo make the model heavier
BTo add color to the model
CTo save computing power by not creating volume
DTo create a flat shape
Explain how a revolved surface is created in SolidWorks and give an example of its use.
Think about spinning a flat shape around a line.
You got /4 concepts.
    Describe the difference between a revolved surface and a revolved solid in simple terms.
    One is like a shell, the other is like a full object.
    You got /4 concepts.

      Practice

      (1/5)
      1. What is the main purpose of a Revolved Surface in SolidWorks?
      easy
      A. To create a 3D shape by spinning a 2D sketch around an axis
      B. To extrude a 2D sketch in a straight line
      C. To cut a hole through a solid body
      D. To mirror a part across a plane

      Solution

      1. Step 1: Understand the Revolved Surface concept

        A revolved surface is created by rotating a 2D profile around a fixed axis.

      2. Step 2: Compare with other features

        Extrusion extends a sketch linearly, cutting removes material, mirroring duplicates. Only revolving spins the sketch.

      3. Final Answer:

        To create a 3D shape by spinning a 2D sketch around an axis -> Option A

      4. Quick Check:

        Revolve = spin sketch around axis [OK]
      Hint: Revolve means spin a sketch around an axis [OK]
      Common Mistakes:
      • Confusing revolve with extrusion
      • Thinking revolve cuts material
      • Mixing revolve with mirroring
      2. Which of the following is the correct syntax to create a revolved surface in SolidWorks using the API method CreateRevolvedSurface?
      easy
      A. CreateRevolvedSurface(axisLine, profileSketch, angle)
      B. CreateRevolvedSurface(profileSketch, axisLine, angle)
      C. CreateRevolvedSurface(profileSketch, angle, axisLine)
      D. CreateRevolvedSurface(angle, profileSketch, axisLine)

      Solution

      1. Step 1: Identify parameter order in API

        The method requires the profile sketch first, then the axis line, then the angle of revolution.

      2. Step 2: Match parameters to options

        Only CreateRevolvedSurface(profileSketch, axisLine, angle) follows the correct order: profileSketch, axisLine, angle.

      3. Final Answer:

        CreateRevolvedSurface(profileSketch, axisLine, angle) -> Option B

      4. Quick Check:

        Profile, Axis, Angle order [OK]
      Hint: Remember: Profile first, then axis, then angle [OK]
      Common Mistakes:
      • Swapping axis and profile parameters
      • Putting angle before axis
      • Incorrect parameter order causing errors
      3. Given a 2D sketch of a semicircle and an axis line, what will be the shape created by revolving the sketch 360 degrees around the axis?
      medium
      A. A hollow cylinder
      B. A solid hemisphere
      C. A torus (doughnut shape)
      D. A sphere

      Solution

      1. Step 1: Understand the semicircle revolution

        Revolving a semicircle 360 degrees around its diameter axis creates a full sphere.

      2. Step 2: Eliminate other shapes

        A hollow cylinder needs a rectangle, a torus needs a circle offset from axis, hemisphere is half sphere.

      3. Final Answer:

        A sphere -> Option D

      4. Quick Check:

        Semicircle revolve 360° = sphere [OK]
      Hint: Semicircle spun fully makes a sphere [OK]
      Common Mistakes:
      • Thinking it creates a cylinder
      • Confusing torus with sphere
      • Assuming hemisphere instead of full sphere
      4. You tried to create a revolved surface but got an error saying "Axis not defined". What is the most likely cause?
      medium
      A. The axis line was not selected or missing
      B. The angle of revolution is zero
      C. The profile sketch is not closed
      D. The sketch is not on the correct plane

      Solution

      1. Step 1: Analyze the error message

        "Axis not defined" means the software cannot find the axis to revolve around.

      2. Step 2: Identify common causes

        Most likely the axis line was not selected or missing in the feature setup.

      3. Final Answer:

        The axis line was not selected or missing -> Option A

      4. Quick Check:

        Missing axis line causes "Axis not defined" error [OK]
      Hint: Always select axis line before revolving [OK]
      Common Mistakes:
      • Ignoring axis selection
      • Assuming profile closure causes axis error
      • Not checking angle value
      5. You want to create a revolved surface for a bottle shape using a 2D profile sketch. The profile is open at the top and you revolve it 270 degrees around the vertical axis. What will be the result?
      hard
      A. A solid cylinder
      B. A fully closed bottle shape
      C. A partial bottle shape with an open side
      D. An error because the profile is open

      Solution

      1. Step 1: Consider the open profile and revolution angle

        An open profile revolved less than 360 degrees creates a partial surface with an open side.

      2. Step 2: Understand the effect of 270 degrees revolution

        Since 270° is less than full circle, the shape will not close fully, leaving a gap.

      3. Final Answer:

        A partial bottle shape with an open side -> Option C

      4. Quick Check:

        Open profile + 270° revolve = partial open shape [OK]
      Hint: Less than 360° revolve + open profile = open partial shape [OK]
      Common Mistakes:
      • Assuming partial revolve closes shape
      • Thinking open profile causes error
      • Confusing partial revolve with full revolve
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