Choose a press brake by checking whether the proposed machine, tooling and handling arrangement can produce your actual parts through a workable bend sequence. Tonnage and bed length narrow the options, but they do not establish clearance, access, part removal or repeatable production on their own.
Start with drawings that represent your normal work and your difficult jobs. This guide turns those drawings into a supplier discussion checklist. It does not prescribe a tooling setup or authorize operating beyond a machine or tool rating.
Select the drawings that reveal your constraints
Include a long bend, a thick or higher-strength material, a short flange and a part with return bends or a deep profile. Add a cosmetic part if surface marking matters. Identify which jobs repeat often and which are occasional: buying around an unusual part can create a different trade-off from buying around most of your production.
Supply a dimensioned drawing and, where available, a 3D model. Record revision, grade, thickness, required inside radius, angle tolerance and batch size. Flag missing details rather than letting each supplier assume something different.
Turn each part into a requirements row
| Drawing or job feature | Ask the supplier to demonstrate |
|---|---|
| Material and longest bend | Required force for the proposed process, machine capacity and tooling load ratings. |
| Short flange or hole near a bend | Suitable support and tooling; whether the geometry needs revision. |
| Return bend or deep profile | Clearance through the sequence, including removal of the finished part. |
| Gauge contact surfaces | How the part will be positioned at each step. |
| Large or heavy blank | Handling and support appropriate to the part and safeguarding arrangement. |
| Visible surfaces | Agreed marking limits and a representative sample finish. |
Record the proposed machine and tool configuration beside each row. A demonstration with different tooling is not evidence that the quoted package includes the tooling your job needs.
Check the bend sequence and tool geometry together
Ask to see the complete sequence rather than a single isolated bend. Previously formed flanges change how the workpiece approaches the next tool. The machine opening, tool shape and usable working space all need to be evaluated with the actual part.
WILA's collision-avoidance guidance explains the value of accurate tooling geometry in simulation. Use that principle when reviewing a proposed setup: a simulation based on approximate tooling is different evidence from one using the actual configuration. Simulation supports planning; it does not replace the required machine-specific verification and safe operating procedures.
Short flanges and features near bends deserve their own review. WILA publishes guidance on short-flange bending and cut-outs near the bend line. Avoid applying one generic minimum distance to every material and tool combination.
Keep radius, tonnage and tooling assumptions visible
Do not assume the finished inside radius equals the punch-tip radius in every process. WILA's tip-radius guidance distinguishes the radius formed during air bending from the tool-tip geometry. Ask the supplier to explain the relationship for your proposed method and material.
Use the tonnage guide as a planning aid, then obtain a configuration-specific check. Confirm the limits of the punch, die, clamping system and machine; a machine's headline capacity does not establish what every tool arrangement can withstand. Keep units consistent when comparing offers.
Evaluate the repeat job and operator workflow
Ask how the operator positions, supports and reorients the part throughout production. Identify where tooling changes occur, what is required between batches and whether the planned staffing can support the workflow. Any handling aids must be considered together with the machine's safeguarding and operating instructions.
Define acceptance using the drawing and downstream assembly requirements. Record several representative results and the inspection method. A one-off corrected sample does not by itself establish repeat production capability.
Download the drawing-review checklist and complete it with your supplier. For equipment context, see the press brake range and tooling guide.
Should I select a larger machine for every possible future part?
Separate confirmed work from speculative work. Ask what each larger configuration changes in cost, floor space and handling, and compare that with the option of subcontracting occasional jobs.
What should go into a quote request?
Include representative drawings, material specifications, quantities, critical features and your production priorities. Ask for the tooling, software, training and support scope to be stated alongside the machine.