Collision Detection | 3D Cadworks


Collision Detection



Tips & Tricks

By default, SolidWorks does not take into account whether or not components are mixed up, which can lead to surprises later on.

Do you want to avoid that your product turns out not to work after production because of parts colliding?

Read below why Collision Detection is the tool for you!

How does it work?

In your composition, choose the option ‘Move Component’ or ‘Rotate Component’. Collision Detection works the same way for both options. 

Within this command, there are several other options that you can use. 

First of all there is Standard Drag where a component is only moved or rotated, without taking collision into account

Then there are two options for displaying collisions: Collision Detection or Physical Dynamics.


As the name suggests, Collision Detection does take collisions into account. 

The other options allow you to configure this function even more. 

  • The “Check between” option allows you to choose whether it should take all components into account or just specific ones. 
  • The “Stop at collision” option does what the name implies: when a collision is detected, the component will stop moving. This allows you to see when a model collides, without the parts getting mixed up. 

At the bottom there are also some advanced options. 

  • With “Highlight faces”, the surfaces where a collision occurs are highlighted to show it visually. 
  • The “Sound” option plays a sound as soon as a collision occurs. 
  • Ignore complex surfaces” ensures that only flat, cylindrical, conical, spherical and toridal surfaces are included in the registration of collisions. 
  • This configuration” only applies to moving and rotating via Standard Drag and not to the other options


This feature makes the movement more realistic

When a component is moved, the component will exert a force on components it touches. This means that the components that are being pushed against can also be moved within their own degrees of freedom. 

This means that the components can only move if they themselves are not fixed or are completely defined by mates

This effect can move through the entire assembly, whereby each component can cause the next component to move in this way. The force applied will last as long as the surfaces are touching each other.

The options for Physical Dynamics are the same as for Collision Detection. 

However, the option to adjust the sensitivity has been added. This sensitivity indicates with which frequency Physical Dynamics checks for collisions. 

At its most sensitive setting it checks for collisions every 0.02 mm (according to the model). As a result, movement in this mode is much slower. 

In the least sensitive position, it is checked only every 20 mm

It is recommended to use the most sensitive position only for very small components or for components with a complete geometry in the collision area. 

Therefore, always try to find a good middle ground.

Dynamic Clearance

It is possible to see the smallest distance between selected components at any time while moving

This distance can be seen in the PropertyManager as well as on your model itself. 

Dynamic Clearance can only be used with Standard Drag or Collision Detection. 

It is not possible to combine it with Physical Dynamics.


Excel AutoFill

Everyone is familiar with the Excel function "AutoFill". However, not everyone knows that you can also apply it in SolidWorks.

You can use this handy feature while configuring certain Components, Features or Dimensions.

In the following we will show you how you can auto fill the "Suppress checkbox" to all configurations in the model.

Structural Member

Does your company use a unique profile that comes back several times during modeling in SolidWorks? 

Then it can be useful to create a "Structural Member"!

Read on and discover step by step how you can create your own profile in SolidWorks.

Model Items

In this tip you will discover how you can reuse the dimensions you have applied to the model in the drawing environment.

Read on quickly and save time from now on with the making of technical drawings.

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