Sheet metal rule reference

In the Design workspace, on the Sheet Metal tab, the edit rule and new rule dialog allow for customizing specific sheet metal features.

Design > Sheet Metal > Modify > Sheet Metal Rules > New Rule

Design > Sheet Metal > Modify > Sheet Metal Rules > Edit Rule

Thickness

Specifies the thickness of the material.

K-factor

When sheet metal is bent, the external surface stretches while the internal surface compresses. The neutral axis shifts towards the inside of the bend. K-factor is the ratio of the neutral axis offset from the internal bend surface to the material thickness.

Gap value

Specifies the value of the space between a flange miter, rip or seam gap.

Bend conditions

Bend conditions include the bend radius and the relief shape, width, depth, and remnant dimensions.

Bend Radius

Specifies the inside radius of a bend.

Relief Shape

Specifies the shape of the relief at the corner of a bend. These images preview the bends reliefs in both folded sheet metal design and flat pattern.

• Round: Creates a bend relief in the shape of a circle.

  

• Square: Creates a bend relief in the shape of a square.

  

• Tear: Creates no bend relief, so the material is torn at the corner.

  

Relief Width

Defines the width of the bend relief.

Relief Depth

Defines the depth of the bend relief.

Relief Remnant

Defines the depth of the bend relief.

2 Bend corner relief type and size

Relief shape

Defines the shape of a 2 bend corner relief. You can see images of various corner relief shapes below. These images preview the bends reliefs in both folded sheet metal design and flat pattern.

• Round: A circular cut out centered on the intersection of the bend lines.

  

• Square: A square cut out centered on the intersection of the bend lines.

  

• Tear: Extends the flange edges to their intersection. No relief, which allows material failure (tearing) across the bend zone in the folded model.

  

Relief size

Defines the size of a 2 bend corner relief. This dimension is measured when the sheet metal body is unfolded.

• Round: The size of a round corner relief is the radius of the cutout.

  

• Square: The size of a square corner relief is width of the square cut out.

  

Relief Placement

Controls the location of relief shape.

• Tangent: Indicates that the shape of the relief is tangential to the flange sides.

  

• Intersection: Indicates that the center point of the relief shape is located at the intersection of bend center lines.

  

3 Bend Intersection

Specifies the relief shape and radius at corners where 3 bends intersect. Note that the 3 bend corner relief shape will only be visible in flat pattern view.

Corner Relief Shape

• No Replacement: Creates no special bend relief shape at the corner where 3 bends meet.

  

• Intersection: Creates a bend relief shape by extending the flange edges until they intersect.

  

• Full Round: Creates a bend relief shape by extending the flange edges until they intersect, then adding a full round fillet at the intersection, tangent to the flange edges starting at the bend zone.

  

• Round With Radius: Creates a bend relief shape by extending the flange edges until they intersect, then adding a fillet of a size that you specify to round the intersection.

  

Relief Radius

Specify the relief radius value to override the sheet metal rule.