BALFORD.Metalworking engineering answers

Sheet metal fabrication

What is the sheet metal DFM checklist?

Answer

What files do you need to quote cutting? Flat pattern DXF/DWG or STEP with material, thickness, quantity, finish and any edge or tolerance requirements. For formed parts send the 3D model and the bend/blank development requirement. Secure Project Review Send Balford Your Drawing NDA before detailed file exchange.

ProcessSheet metal fabrication
Buying topicsheet metal dfmsheet metal design for manufacturing

Sources

  1. Sheet Metal Cutting Services China | Blanks & Profiles
    What files do you need to quote cutting? Flat pattern DXF/DWG or STEP with material, thickness, quantity, finish and any edge or tolerance requirements. For formed parts send the 3D model and the bend/blank development requirement. Secure Project Review Send Balford Your Drawing NDA before detailed ...
  2. Custom Sheet Metal Bending Services | Balford
    Send Balford Your Drawing NDA before detailed file exchange. Drawing-based DFM review. Prototype-to-production route. Check the RFQ checklist before sending files. Send Your Drawing Request a Quote Related manufacturing capability: sheet metal fabrication , tube bending or sheet metal cutting &mdash...
  3. Custom Metal Welding Services China | TIG & MIG
    Multi-bend tube parts and helical coils welded or brazed into assemblies. Assembly and subassembly Welding, riveting and hardware insertion combined into a delivered module. Secure Project Review Send Balford Your Drawing NDA before detailed file exchange. Drawing-based DFM review of the joint, the ...
  4. Sheet Metal Bend Allowance & Springback Guide | Balford
    The design team owns the finished functional geometry. The manufacturing flat pattern gets verified against the actual bending process you're using. Developing a bent metal enclosure, bracket, or profile? Send Balford the drawing for a process and manufacturability review. Related Reading Metal Stam...
  5. Sheet Metal Stamping Tolerances & ±0.01 mm Limits
    Balford's Metal Components Expertise Deep Drawing Sheet Metal: Precision Components What is metal stamping? Design Guide: Double-Sided Chamfered Circular Washer Design Guide: Stamping Washers Automotive Motor Housing Manufacturing via Deep Drawing Reference Tolerances for Stamped and Deep-Drawn Part...
  6. Resources: Calculators, Guides & Checklists | Balford
    Deep draw force and draw ratio calculator – blank diameter, punch diameter, sheet thickness and tensile strength in; draw force, draw ratio and press tonnage out. Bend allowance and bend deduction for sheet metal. Springback calculator Material weight calculator Stamping force calculator Tube ...

What an engineer still needs from you

  • material and material condition (grade, temper)
  • material thickness, plus the key diameter, height and wall thickness
  • tolerances, burr direction and the visual acceptance standard
  • annual volume - it decides whether tooling is single-hit, progressive or transfer
  • surface finish, and any secondary machining, annealing or plating

Need a DFM feasibility assessment for your project?

Send the engineering drawing (STEP or PDF) with the material grade, thickness and annual volume. Balford engineers then check it against the process window - draw ratio, wall thickness, tolerances, blank and tooling route - and come back with what is feasible and what is not. An answer on this page cannot replace that review.

Upload a drawing for DFM reviewHow the DFM review works

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This page is an engineering answer, not a quotation and not a dimensional acceptance. It is generated from Balford's published material and held to the verified company fact sheet.