Prufi

69 checks and profiles

Forming

Sheet-metal and bending checks, bending-machine profiles and tooling inputs, plus offline reviews of supplied forming, drawing, forging and extrusion results.

Sheet metal / bending

PRU-002Heuristic screen

Bend radius too small

Check if inner radius is too small. Min Ri depends on material and thickness: 0.5×s (mild steel), 1×s (stainless), 1–2×s by thickness band (aluminium, soft 5052-H32 temper assumed; 2–3×s for a declared 6xxx T5/T6 temper such as 6061-T6). Flags radii below 90 % of the limit. Hems are skipped.

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PRU-003Heuristic screen

Flange too short

Flange length measured from the outside of the bend (straight leg + (r+t)·tan(angle/2)): WARNING below max(4t, 0.7 x 6t routine V-die), INFO up to the comfortable 8t-die limit. Offset webs and hem returns are skipped.

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PRU-004Heuristic screen

Hole too close to bend

Check if round holes are too close to bends (2T+R / 2.5T+R from the tangent line, Atlas Manufacturing); bend-end reliefs are skipped and holes spanning the bend are INFO.

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PRU-100Heuristic screen

Countersink depth

Countersink depth versus local sheet thickness (knife edge / > 0.6 t) on recognised countersinks.

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PRU-102Heuristic screen

Joggle too small

Offset (Z) bend height: INFO between 2.5 t and 8 t (offset tooling needed), WARNING below 2.5 t.

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PRU-103Heuristic screen

Bend relief

Unrelieved partial-width bend ends on thick sheet and undersized relief notches.

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PRU-108Heuristic screen

Cutout too close to the bend

Non-round cutouts and slots near a bend tangent line: slot parallel to the bend WARNING below 4 x t (INFO below 4 x t + R, Xometry/Fractory), other cutouts WARNING below 2.5 x t (INFO below half the V-die opening, SendCutSend). Round holes stay with PRU-004; a cutout crossing the bend is a relief window and is not judged.

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PRU-109Heuristic screen

Corner relief missing

Two bends that meet at a corner of a base face without a corner relief and whose bend zones overlap when unfolded into the flat pattern (material that would have to exist twice; Protocase, SendCutSend, DFMPro: relief width >= t, depth >= R + t). Closed corners whose unfolded bend zones are disjoint are shop-typical and not reported.

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PRU-200Declared input

Form stripping draft below supplier guidance

Selected complete closed offset-cone emboss narrows along declared upper-tool withdrawal; matching normal wall and host/cap sheet gauge. Draft >=5 degrees Mate recommendation; no global extraction certification.

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PRU-201Declared input

Continuous-bead lower-tool radius too small

Explicit actual continuous-bead lower-tool radius >=2 times measured local gauge; one complete straight rounded trapezoidal bead with four connected arcs and coplanar host legs; selected concentric partial walls and matching inner/outer sheet flats. Finished bead radius is not tool radius.

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PRU-202Declared input

Selected extrusion clearance below drawing minimum

Selected recognized collar and adjacent finite 90-degree bend on the same sheet host; actual clearance to explicitly selected tangent or theoretical inside-intersection datum compared only with qualified drawing/process minimum. No Mate or CONIC threshold assumed.

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PRU-210Declared input

Outer cut bridge below supplier advice

INFO: selected parallel straight outer cut walls on a proven constant-thickness plate. Exact material cross-section width compared with SendCutSend general 0.5T advice; material-specific supplier limits take precedence. No global minimum, strength or cutting qualification.

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PRU-303Declared input

Finished tab-slot dimensions below supplier guidance

INFO supplier recommendation for one whole rectangular tab crossing exactly one complete rectangular through slot on two uncoated separate flat stocks. Explicit compensated finished dimensions and independent declared tab/slot cut and positive tab-stock tolerances. No worst-case fit guarantee, tool access or joint strength.

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Bending machines

MAC-035Declared input

Manual press brake

Manual press brake: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Operator force and die geometry.

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MAC-036Declared input

Mechanical press brake

Mechanical press brake: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Force/stroke curve and overload protection.

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MAC-037Declared input

Hydraulic press brake

Hydraulic press brake: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Hydraulic force distribution and crowning.

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MAC-038Declared input

Servo-electric press brake

Servo-electric press brake: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Drive duty cycle and load distribution.

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MAC-039Declared input

Hybrid press brake

Hybrid press brake: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Drive/hydraulic coupling and available load curve.

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MAC-040Declared input

Tandem press brake

Tandem press brake: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Synchronization, support and per-machine load allocation.

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MAC-041Declared input

Folding / swivel-bending machine

Folding / swivel-bending machine: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Clamping beam, folding beam path and sequence.

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MAC-042Declared input

Panel bender

Panel bender: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Manipulator grip, blank dimensions and bend sequence.

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MAC-043Declared input

Three-roll plate bender

Three-roll plate bender: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Prebend allowance, roll spacing and shell removal.

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MAC-044Declared input

Four-roll plate bender

Four-roll plate bender: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Pinch/side-roll load, cone control and shell removal.

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MAC-045Declared input

Profile / section roll bender

Profile / section roll bender: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Section modulus, tooling and profile distortion.

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MAC-046Declared input

Rotary-draw mandrel tube bender

Rotary-draw mandrel tube bender: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Mandrel, wiper die, grip length, ovality and wall thinning.

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MAC-047Declared input

Rotary-draw tube bender without mandrel

Rotary-draw tube bender without mandrel: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Wall collapse, grip length and ovality.

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MAC-048Declared input

Compression tube bender

Compression tube bender: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Slide/wipe tooling and tube support.

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MAC-049Declared input

Ram / three-point tube bender

Ram / three-point tube bender: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Support distance and tube collapse.

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MAC-050Declared input

Stretch bending machine

Stretch bending machine: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Grip length, imposed tension and elongation history.

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MAC-051Declared input

Wire / bar bending machine

Wire / bar bending machine: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Feed length, straightening, tool sequence and torsion.

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MAC-052Declared input

Roll-forming line

Roll-forming line: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Pass schedule, strip development and longitudinal strain.

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MAC-053Declared input

Induction tube bender

Induction tube bender: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Heat cycle, temperature-dependent strength and cooling.

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MAC-054Declared input

Other / custom bending machine

Other / custom bending machine: Capability screening from explicit operating inputs and machine limits. Compare supplier/trial force and moment, usable length, radius, grip and stock limits. No universal bending-force or minimum-radius formula is assumed. Not assessed: Supplier-specific process, tooling and operating envelope.

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Reviews with supplied evidence

review-forming-result-evidenceSupplied evidence required

Located supplied forming results

Compares supplied forming or forging results at required model locations or supported complete fields, with independently identified process and simulation records.

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review-spinning-resultsSupplied evidence required

Supplied metal-spinning results

Reviews qualified supplied finite spinning states and calibrated physical through-wall measurements against independent requirements.

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review-tube-hydroforming-resultsSupplied evidence required

Supplied tube-hydroforming chain

Reviews a complete supplied validated tube bending, preforming and hydroforming chain against independent requirements and actual finite CAD.

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