Metal Stamping Parts
CNC Bending Parts
CNC bending forms metal on computer controlled machines, giving accuracy and repeatability that hand setting cannot match. Bend radius is the key design decision, since it determines how sharp or smooth the bend will be and whether the material will crack on the outside of the bend.
- Aluminium
- Stainless steel 304
Product Overview
CNC bending forms metal on computer controlled machines, giving accuracy and repeatability that hand setting cannot match. Bend radius is the key design decision, since it determines how sharp or smooth the bend will be and whether the material will crack on the outside of the bend. Parts are formed in aluminium, 304 stainless steel and other materials to the customer's drawing.
Key Benefits
- Bend angles repeat across a batch rather than drifting between parts
- Bend radius specified as part of the design rather than left to the press operator
- Aluminium and 304 stainless steel among the materials formed
- Suitable for intricate designs including electronics enclosures
- Custom solutions rather than a fixed range of formed parts
Problems It Solves
- Parts that do not assemble because bend angles vary
- Cracking on the outside of tight bends in the wrong material or grain direction
- Welded assemblies that could be formed from one blank more cheaply
- Bend allowances that differ between suppliers so flat patterns do not transfer
Where It Is Used
Applications And Buyers
Application Scenarios
- Enclosures and chassis for electronics
- Brackets and mounting plates formed from flat blanks
- Panels and covers with multiple bends
- Formed components replacing welded assemblies
Who It Is For
- Electronics manufacturers needing chassis and enclosures
- Equipment builders buying formed brackets and panels
- Product designers converting a flat design into a formed part
- Buyers whose current parts vary in bend angle between batches
Technical Features And Specifications
Technical Features
- Computer controlled bending
- Bend radius specified per feature
- High accuracy and repeatability
- Aluminium and 304 stainless steel among materials
- Custom solutions to client requirements
| Process | CNC bending |
|---|---|
| Materials | Aluminium, 304 stainless steel and others |
| Key Design Parameter | Bend radius |
| Supply Basis | Custom to customer drawing |
| Typical Markets | Electronics, equipment manufacturing |
How It Is Made And Checked
Materials Process And Quality Control
Materials
- Aluminium
- Stainless steel 304
Manufacturing Process
- CNC bending
Quality Control
- Specification agreed in writing before production starts
- First article or sample approved against the agreed specification
- Goods inspected and photographed at the factory before loading
- Inspection report sent to you before the container sails
Customisation Options
What Can Be Varied
- Bend radius and angle per feature
- Material grade and thickness
- Flat pattern developed by us or supplied by you
- Hole positions adjusted for bend deduction
- Finish applied after forming
Compared With The Alternatives
| Welded fabrication | A formed part from one blank is usually cheaper and stiffer than several parts welded together, and there is no weld to finish. |
|---|---|
| Manual press brake work | Hand setting can produce a good first part; CNC control is what keeps the hundredth part the same as the first. |
Use Guide
- Specify the inside bend radius rather than leaving it to the tooling available
- Keep holes away from the bend line, or allow for distortion if they cannot be moved
- Confirm the material grain direction where bends are tight
- Agree bend allowances with the supplier and reuse them across the project
Questions
Questions Buyers Ask About This Product
What bend radius should I specify?
It depends on material and thickness, and it decides whether the bend is sharp or smooth and whether the outside cracks. Send the material and thickness and we will advise a workable minimum.
Which materials can you bend?
Aluminium, 304 stainless steel and other materials on request.
Can you develop the flat pattern for us?
Yes. Send the folded 3D model and we will develop the flat pattern using our own bend allowances.
How accurate are the bends?
CNC bending gives high accuracy and repeatability across a batch. Tell us which angles are critical and we will inspect those specifically.
Can bent parts be welded and finished?
Yes, bending is normally combined with cutting, welding and finishing on the same order.
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Get A Price For CNC Bending Parts
Send the duty figures, the material if it is fixed, and the quantity. We will confirm the specification and quote against it.