Creating Corners

This task shows how to create a corner (arc tangent to two curves) between two lines using the different trimming options.
  This page deals with the following information:
Open the Move_Corner.CATPart document.
 
  1. Click Corner .
    The possible corner options are displayed in the Sketch tools toolbar. The Trim All Elements option  is selected by default.

Trimming Both Lines

  1. Select the Trim All Elements option .

  1. Select the two lines.

The two lines are joined by the rounded corner which moves as you move the cursor. This lets you vary the dimensions of the corner.

  1. Enter the corner radius value in the Sketch tools toolbar: 22mm

You can also click when you are satisfied with the corner dimensions. Both lines are trimmed at the points of tangency with the corner.

 
 

Trimming the First Line

  1. Select the Trim First Element option .

  1. Select the two lines.
    The first line is trimmed.

 
 

No Trimming 

 
  1. Select the No trim option .  

  1. Select the two lines.
    The corner is created. No line is trimmed.

 
 

Trimming Both Lines Until their Intersection

  1. Select the Standard Lines Trim option .

  1. Select the two lines.
    The corner is created. The trimmed lines are set as standard lines.

 
 

Trimming Both Lines and Creating Construction Lines Until their Intersection

 
  1. Select the Construction Lines Trim option .

  1. Select the two lines.

The corner is created. The trimmed lines are set as construction lines.

 
 

Trimming Both Lines and Creating Construction Lines

Enter the Sketcher workbench and create two intersecting lines.
 
  1. Select the Construction Lines No Trim option .

  1. Select the two lines.

The corner is created. The trimmed lines are set as non-trimmed construction lines.

  • By default, centers are created but if you do not need them you can specify this in the Options dialog box. for this, go to Tools > Options > Mechanical Design > Sketcher option (Sketcher tab).).

  • You can create corners between curves.

 
 

Optimizing the Operation By Multi-Selection

  You can create several corners just by multi-selecting for example, the rectangle endpoints and enter a radius value in the Radius field (Sketch tools toolbar). Four corners are created at the same time with the same radius value.

Double-clicking on Formula displays the parameter driving the radius value of the corners you have just created.