Creating an assembly document in Solidworks - Quick Revision & Summary

Recall & Review

beginner

What is an assembly document in SolidWorks?

An assembly document is a file where you combine multiple parts to create a complete product or system. It shows how parts fit and move together.

beginner

How do you start creating an assembly document in SolidWorks?

You open SolidWorks, click on 'New', then select 'Assembly' from the options. This opens a blank assembly where you can add parts.

intermediate

What is the purpose of mates in an assembly document?

Mates define how parts connect and move relative to each other. They control position and motion, like making two parts touch or rotate together.

beginner

Name two common types of mates used in assemblies.

Two common mates are 'Coincident' (makes faces or edges touch) and 'Concentric' (aligns centers of holes or cylinders).

beginner

Why is it important to save your assembly document frequently?

Saving often prevents loss of work if the program crashes. Assemblies can be complex, so saving keeps your progress safe.

What do you select first to create a new assembly document in SolidWorks?

A Sheet Metal

B Part

C Drawing

D Assembly

To create an assembly, you must select 'Assembly' when starting a new document.

Which mate would you use to make two flat faces touch in an assembly?

A Concentric

B Coincident

C Parallel

D Distance

The 'Coincident' mate makes two faces or edges touch exactly.

What is the main purpose of mates in an assembly?

A To create new parts

B To color parts

C To define part connections and movement

D To export drawings

Mates control how parts fit and move together in an assembly.

When adding parts to an assembly, what is the first step?

A Insert components

B Save the assembly

C Create a drawing

D Apply materials

You insert components (parts) into the assembly to build it.

Why should you save your assembly document frequently?

A To prevent losing work

B To change colors

C To add more parts

D To export files

Saving often protects your work from being lost due to crashes or errors.

Explain the steps to create a new assembly document in SolidWorks and add parts.

Think about starting from a blank assembly and bringing in parts.

Describe what mates are and why they are important in an assembly document.

Mates are like rules that tell parts how to fit together.

Practice

1. What is the main purpose of creating an assembly document in SolidWorks?

easy

A. To combine multiple parts and show how they fit together

B. To create a 2D drawing of a single part

C. To write code for automating part creation

D. To export parts as image files

Solution

1. Step 1: Understand the role of assembly documents

   Assembly documents are used to combine parts to visualize how they fit and work together.

2. Step 2: Differentiate from other document types

   Unlike part or drawing documents, assemblies focus on multiple parts and their relationships.

3. Final Answer:

   To combine multiple parts and show how they fit together -> Option A

4. Quick Check:

   Assembly = Combine parts [OK]

Hint: Assemblies show part relationships, not single parts [OK]

Common Mistakes:

• Confusing assembly with part document
• Thinking assembly creates 2D drawings
• Assuming assembly is for coding or exporting images

2. Which SolidWorks command is used to add parts into an assembly document?

easy

A. Extrude Boss/Base

B. New Part

C. Save As

D. Insert Components

Solution

1. Step 1: Identify the command to add parts

   The 'Insert Components' command allows you to bring existing parts into an assembly.

2. Step 2: Exclude unrelated commands

   'New Part' creates a new part file, 'Save As' saves files, and 'Extrude Boss/Base' creates features inside parts.

3. Final Answer:

   Insert Components -> Option D

4. Quick Check:

   Add parts = Insert Components [OK]

Hint: Use 'Insert Components' to add parts in assembly [OK]

Common Mistakes:

• Choosing 'New Part' instead of inserting existing parts
• Confusing feature commands with assembly commands
• Using 'Save As' to add parts

3. Consider you inserted two parts in an assembly and applied a 'Coincident Mate' between their faces. What will happen?

medium

A. The assembly will show an error and not save

B. The two faces will align and touch each other

C. The parts will move freely without restriction

D. The parts will merge into a single part

Solution

1. Step 1: Understand the 'Coincident Mate'

   This mate aligns two faces so they touch and stay together in the assembly.

2. Step 2: Clarify what does not happen

   The parts do not merge; they remain separate but connected. The assembly does not error or allow free movement for those faces.

3. Final Answer:

   The two faces will align and touch each other -> Option B

4. Quick Check:

   Coincident Mate = Faces touch [OK]

Hint: 'Coincident Mate' aligns faces exactly [OK]

Common Mistakes:

• Thinking parts merge into one
• Assuming parts remain free to move
• Believing assembly errors on mate

4. You tried to insert a part into an assembly but received an error saying the part is already in the assembly. What is the likely cause?

medium

A. The part file is missing from the computer

B. The assembly document is corrupted

C. You are trying to insert the same part twice without renaming

D. You did not save the assembly before inserting

Solution

1. Step 1: Analyze the error message

   The error indicates the part is already present, so inserting it again without changes causes conflict.

2. Step 2: Exclude other causes

   Corruption or missing files cause different errors. Not saving assembly does not prevent insertion.

3. Final Answer:

   You are trying to insert the same part twice without renaming -> Option C

4. Quick Check:

   Duplicate part insertion = Error [OK]

Hint: Avoid inserting identical parts twice without changes [OK]

Common Mistakes:

• Assuming assembly corruption causes this error
• Thinking missing files cause this error
• Believing saving assembly is required before insert

5. You want to create an assembly where a wheel rotates around an axle but does not move sideways. Which mate combination should you use?

hard

A. Use a concentric mate for rotation and a coincident mate to fix sideways movement

B. Use two coincident mates on the wheel and axle faces

C. Use a distance mate to keep the wheel fixed in place

D. Use a parallel mate to allow free rotation and movement

Solution

1. Step 1: Understand rotation and movement constraints

   A concentric mate aligns the wheel and axle axes allowing rotation. A coincident mate fixes sideways movement by aligning faces.

2. Step 2: Evaluate other mate options

   Two coincident mates restrict rotation. Distance mate fixes position but may restrict rotation. Parallel mate allows unwanted movement.

3. Final Answer:

   Use a concentric mate for rotation and a coincident mate to fix sideways movement -> Option A

4. Quick Check:

   Rotation + fixed sideways = Concentric + Coincident [OK]

Hint: Concentric for rotation, coincident to fix sideways [OK]

Common Mistakes:

• Using only coincident mates restricting rotation
• Using distance mate that blocks rotation
• Choosing parallel mate allowing unwanted movement