Creating Formulas to form Parametric model | CATIA V5

Parametric Model

Creating Formulas to form Parametric model | CATIA V5


In this Tech Tip, you will learn about Parametric model. How to rename the Parameters in an Existing CATIA V5 Model and Create Formulas for the same Parameters.

Download or Open File. (May require active subscription)

(Accept all cookies to see the video)

Please follow the below steps to achieve the required result –

Step 1:

Open the CATIA Part named Bolt.CATPART.


Step 2:

Make sure that you are on Part design Workbench.

Select Tools | Options | Infrastructure | Part Infrastructure | Display. Activate Parameters, Relations to Display in Specification Tree. 

Step 3:

Select Tools | Formula or Select Knowledge Toolbar > select Formula.

select Formula

Step 4:

Select New Parameter of Type to add new parameterselect Length as type, Enter name as Bolt_Dia, Value as 50mm

add new parameter

Click Ok.

Step 5:

To add Relations, Select Sketch1 in the specification Tree. Right click on the Dimension as Shown select Rename Parmeter.

add Relations

Enter Parameter name as Hex_length, Right click on the value select Edit Formula.

select Edit Formula

Edit formula as Bolt_Dia*1.2 and Click Ok to create Relation.

Edit formula

Notice that Formula.1 has been created and displayed in the specification tree.


Step 6:

Click on Update icon to update the parameter value.

update icon

Step 7:

Similarly change the name for remaining parameters and adding formulas.

For Pad.1 rename as Pad, Formula as 0.7*Bolt_Dia

rename parameters and add formulas.

Step 8:

Click on Sketch.4 under Shaft.1, Right click on the Dimension Rename Parameter as shown below.

Rename Parameters

Rename as Bolt_Radii, Edit the formula, Enter Bolt_Radii= Bolt_Dia/2. Click Ok to display in Specification Tree.

Edit the formula


Rename length as Shank_Length, Edit the formula, Enter Shank_length=(Bolt_Dia+10mm)*3. Click Ok to display in Specification Tree.

Rename length

Step 9:

Click on Update icon to update the parameter value.

Click on Update icon


Step 10:

Change the Value of the Parameter Bolt_Dia according to that parametric model will be Updated.

Parameter Bolt_Dia


i GET IT is our Tata Technologies eLearning solution designed to teach engineers how to be better in using today’s leading CATIA V5 applications and design skills

For more tech tips and in-depth eLearning for CATIA V5, including this and new courses on other design solutions, please visit You can sign up and get FREE Subscription of our informative Newsletter.

Start your Upskilling Journey Now! Visit our Plans Pages –

If you should have any questions, please reach out to or for help.

If you like our Tech Blogs do share them using following share this post icon.


Autodesk Training Subscription



Verify email

(Ensure popup is allowed for this site)

Pay now, get full term access

Already have an account? Sign In

By clicking the button above, you accept our terms of use and privacy policy.


Sign In

Have Organization Sign In?  Use Single Sign On

Don’t have an account? Sign Up



Sign Up

Already a user? Sign In


(Ensure popup is allowed for this site)


Have Organization Sign In?   Use Single Sign On

By Registering you agree to the Terms of Use and Privacy Policy.


Single Sign On

If your company has single sign-on set-up with i GET IT, enter your company's web address to access your unique login page. The format needs to be as such: "".

(Ensure popup is allowed for this site)

Not an enterprise user?Sign In

Forgot Password

Enter your email and we'll send you instructions on how to reset your password.