Bend To Mold Sheet Metal Line Distance Calculator

Bend To Mold Line Distance Calculation
Inside Bend Radius (R) (Inches)
Thickness (T) (inches)
Angle (a) (degrees)
Must be greater than 90 and
less than 180 degrees
 
Distance to Mold Line (D)

What is a Bend to Mold Sheet Metal Line Distance Calculator?

A Bend to Mold Sheet Metal Line Distance Calculator is a tool used to determine the setback distance between the bend line and the mold line in sheet metal bending. This helps in precise fabrication, ensuring accurate part dimensions after bending.

Why is a Bend to Mold Line Distance Calculator Important?

  1. Ensures Accurate Bends – Prevents dimensional errors in sheet metal parts.
  2. Reduces Material Waste – Optimizes sheet metal cutting and bending.
  3. Enhances Manufacturing Efficiency – Speeds up production by avoiding trial-and-error.
  4. Improves Assembly Fit – Ensures the final part aligns correctly with other components.

How Does a Bend to Mold Line Distance Calculator Work?

The setback (SB) distance is calculated as:

where:

  • SB = Setback distance (mm or inches)
  • T = Material thickness
  • R = Bend radius (inside)
  • θ = Bend angle (degrees)

Alternatively, for precise bending, the bend allowance (BA) and bend deduction (BD) may also be considered:

where K is the K-factor, a material-dependent value.

When is a Bend to Mold Line Distance Calculator Used?

  • Sheet Metal Fabrication – Ensuring proper part dimensions before bending.
  • CNC Press Brake Operations – Setting accurate bend positions for automated bending.
  • Aerospace & Automotive Manufacturing – Precision bending for structural parts.
  • Custom Metalwork & Prototyping – Designing metal enclosures, brackets, and casings.