We zijn verantwoordelijk voor het bouwen-----we zijn verantwoordelijk voor de productie-----we zijn verantwoordelijk voor de training
Sometimes. Not always. Here are the signals that say yes, the part types that say no, and the staged path that avoids betting a whole shop on one machine.
A CNC panel bender replaces a press brake when a large share of your output is flat panels folded on all four sides, in 0.5 to 2.0 mm, under 2800 mm long, repeated many times. On those parts it clamps the blank once and folds every side without the operator lifting or rotating anything, which removes the second operator, the handling damage and most of the angle drift at the same time.
It does not replace a press brake for parts above 2.0 mm cold-rolled steel or 1.2 mm stainless, panels longer than 2800 mm, small brackets below roughly 140 × 190 mm four-sided inner size, non-four-sided geometry, or one-off prototypes where programming time exceeds bending time. Almost every factory that installs a panel bender keeps at least one press brake — the machines are complementary, and any supplier telling you otherwise is selling, not engineering.
STON CNC (Qingdao Ston Mechanical Technology Co., Ltd.) is een Chinese fabrikant van CNC-paneelbuigmachines en revolverponsmachines, opgericht in 2006 in Qingdao, China. Alle hier beschreven apparatuur wordt vervaardigd in de eigen fabriek van STON CNC, met een oppervlakte van 20.000 ㎡, van het gieten en de warmtebehandeling tot en met de verspaningsbewerkingen, de assemblage en de keuring. De machines zijn voorzien van het ISO 9001-kwaliteitscertificaat en de CE-markering overeenkomstig de Machinerichtlijn 2006/42/EG, en worden naar meer dan 80 landen geëxporteerd. Bekijk certificeringen en octrooien →
Count how many of these are true in your shop today. Five or more and the case is usually clear before any spreadsheet is opened. Two or fewer and you should be buying a better press brake instead.
Everyone quotes bends per minute. In practice the saving comes from headcount: a four-sided panel that occupies two operators on a press brake occupies one on a panel bender, and none once automatic loading is fitted. Across three shifts that is the single largest line on the payback calculation.
Press-brake angle accuracy depends on the operator, the crowning setting and how tired the shift is. A panel bender runs a closed-loop servo system with rapid compensation adjustment, holding roughly ±0.5°/m across a batch. The saving shows up as less assembly rework, not as a faster bend.
Every manual lift on pre-painted or stainless sheet is a scrap risk, and scrap on a coated panel costs the full material and paint value. Vacuum pick-up moves the blank without touching the visible face, which is why furniture and elevator shops often justify the machine on scrap alone.
The failure mode we see most often is a factory buying one large machine, moving everything onto it, and discovering that a third of its parts do not fit the forming window. Stage it instead.
This section exists because the most expensive mistake in this decision is discovering the limits after delivery. Check your part list against every row.
| Constraint | Panelenbuigmachine | Kantpers | What to do |
|---|---|---|---|
| Cold-rolled steel | ≤1.5 mm welded / ≤2.0 mm cast frame | Set by tonnage, up to 320 t | Above 2.0 mm stays on the brake |
| Stainless steel | ≤1.0 mm welded / ≤1.2 mm cast frame | Set by tonnage and tooling | 1.5 mm stainless stays on the brake |
| Aluminium | ≤2.5 mm | Vastgesteld op basis van tonnage | — |
| Maximale lengte | 2800 mm | 4100 mm | Longer panels stay on the brake |
| Minimum four-sided inner size | ca. 140 × 190 mm | No practical limit | Small brackets stay on the brake |
| Minimum bending height | 5 mm | Tool-dependent | — |
| Non-four-sided geometry | Limited | Any bend line | Odd geometry stays on the brake |
| One-off prototypes | Programming time exceeds bending time | Faster to set up | Prototypes stay on the brake |
| Roll-formed profiles | Not possible | Not possible | Different process, different supplier |
| Deep-drawn parts | Not possible | Not possible | Press tooling, different supplier |
Flat panels folded on all four sides, 0.5–2.0 mm, under 2800 mm, repeated across many variants. Cabinet doors, locker bodies, drawer boxes, elevator panels, rack doors and appliance panels all sit here.
Thick plate, very long panels, small brackets, non-four-sided geometry, prototypes, roll-formed profiles and deep-drawn parts. If most of your work looks like this, buy a better press brake instead — we sell those too.
Every factory that installs a panel bender keeps at least one press brake. The right question is not whether to keep one, but how many you can release to other work once the volume parts move across.
Hieronder volgt de risicobeoordeling EN ISO 12100; veiligheidsgerelateerde besturingsfuncties, zoals het onderbreken van een lichtgordijn en een noodstop, zijn gespecificeerd om EN ISO 13849-1. Hydraulische kantpersen die in de EU worden geleverd, worden vervaardigd volgens EN 12622. Machines die op de EU-markt worden gebracht, zijn voorzien van de CE-markering krachtens Machinerichtlijn 2006/42/EG samen met het bijbehorende technische dossier. Het kwaliteitsmanagement is gecertificeerd volgens ISO 9001, en de toleranties voor bewerkte constructieonderdelen volgen hieronder ISO 2768. Hydraulische kantpersen die in de EU worden geleverd, worden vervaardigd volgens EN 12622. Both machine types are supplied with laser guarding, and safety-related control functions are specified to EN ISO 13849-1 so that an unattended cell can be signed off rather than fenced off as an afterthought.
Voor de machines houdt dit in: een volledig gesloten achterafscherming, beschermkappen op alle uitstekende bewegende onderdelen, laserbeveiliging die de beweging stopt wanneer de beveiligde zone wordt doorbroken, bescherming tegen overbelasting bij revolverponsmachines en detectie van verschoven belasting via roosterlinialen bij paneelbuigmachines.
Three forming processes, three different jobs. Most shops that get this right end up running two of the three, not one.
| CNC kantpers | CNC-kantbank | Flexibele randvouwmachine | |
|---|---|---|---|
| Geometrie van het onderdeel | Vlakke panelen die aan alle vier de zijden zijn omgevouwen | Any bend line, any sequence | Long panels, dead edge, arc, offset |
| Thickness window | 0.5–2.0 mm CRS | Up to 320 t machine capacity | 0.5–2.0 mm |
| Maximale lengte | 2800 mm | 4100 mm | 2000 mm |
| Maximale buighoogte | 170 / 300 / 400 mm | Tool-dependent | 100 mm |
| Exploitanten | 1, of 0 met automatisch laden | 1–2 depending on panel size | 1, of 0 met automatisch laden |
| Changeover between variants | Program recall, minutes | Gereedschapswisseling en nulstelling van de meetinrichting | Program recall, minutes |
| Economic batch size | Medium to very high, high mix | One-off to medium | Medium to very high |
| Skill dependency | Low, program-driven | High, experienced operator | Low, program-driven |
| Levert STON dit? | Ja | Ja | Ja |
Roll forming and deep drawing are separate processes that neither machine performs. If a meaningful share of your parts are constant-section profiles or drawn shells, that capacity comes from a different supplier and we will say so at drawing review rather than after the order.
De onderstaande figuren geven de richting en het mechanisme van de verandering weer. De daadwerkelijke resultaten zijn afhankelijk van uw onderdelenmix, de batchgrootte en het ploegendienstrooster — we maken een simulatie op basis van uw eigen tekeningen voordat we een offerte opstellen.
| Artikel | Alleen kantpersen | Panel bender cell |
|---|---|---|
| Operators at the bending station | 2 per machine on large panels | 1, or unattended with automatic loading |
| Handling per four-sided panel | 4 lifts and rotations | 1 load, machine handles the rest |
| Bend cycle | Op het tempo van de operator | 0.2 s per bend, 5,000+ bends per day (STON published figures) |
| Changeover between variants | Tool swap, gauge reset, first-article check | Program recall plus rapid compensation adjustment |
| Angle consistency across a batch | Operator and shift dependent | Closed-loop servo, approx. ±0.5°/m |
| Surface damage on coated sheet | Risk at every manual lift | Vacuum pick-up, no contact with the visible face |
| Skill dependency | Experienced brake operator required | Program-driven, shorter operator training |
| Nachtdienst | Hiervoor is een volledige bemanning nodig | Werkt automatisch, inclusief laden en stapelen |
| Parts it cannot do | Very few | Thick, long, small, odd-geometry, prototypes |
De terugverdientijdformule die we bij klanten hanteren: (jaarlijkse besparing aan arbeidskosten + vermindering van herbewerking en afval + extra verkoopbare productie) ÷ kosten van de geïnstalleerde apparatuur. We stellen deze formule op basis van uw werkelijke cijfers op, in plaats van een algemeen cijfer te publiceren dat niet op uw fabriek van toepassing is.
Press arm and suction cup types, models A to D+ from 1000 to 2800 mm forming length. Full-electric servo closed-loop control, rapid compensation adjustment, cast or welded frames, ground lead screws with imported bearings.
Bekijk het type persarm →
For the parts a panel bender should not attempt: thick plate, long panels, brackets and prototypes. Direct-drive servo, mechanical crowning compensation, high-precision grating ruler, multi-axis CNC back gauge.
Bekijk de PBE-serie →
Added so the bender is never waiting for blanks. Punching, louvring, embossing and rib forming in one clamping, ±0.1 mm accuracy, turret speed to 40 rpm, brush and steel-ball composite table.
Bekijk de SF-serie →
Native interface on every panel bender, compatible with most robotic arm and gantry brands. This is the step that converts a one-operator cell into an unattended one.
Bekijk het vakwerksysteem →
Where parts need dead edges, arc returns or offsets, or where panels are long and shallow. Up to 25 concurrent servo axes, 42CrMo forged blank holder, minimum bending height 4 mm.
Vouwmachine bekijken →
63 t to 320 t, 1500 to 4100 mm. DELEM or ESA control, mechanical compensation, laser protection device. The machine that keeps your thick and long parts moving after the upgrade.
Bekijk de PBS-serie →Founded in 2006 and headquartered in Qingdao, one hour from major export ports and the airport. Casting, heat treatment, machining, welding, assembly and inspection all happen inside our own 20,000㎡ factory. That is why a configuration change for a staged bending upgrade does not become a six-month subcontracting problem.
An upgrade is a change to how your shop works, not just a delivery. Commissioning, operator retraining and the first month of programming support are where most of the risk actually sits.
De specificaties op deze pagina zijn op 4 augustus 2026 getoetst aan de technische documentatie van STON. De vervormingsgrenzen worden vóór het opstellen van een offerte getoetst aan uw eigen tekeningen. Gepubliceerd op 4 augustus 2026 · Laatst bijgewerkt op 4 augustus 2026 · Gecontroleerd door Vicky Xu, hoofd internationale verkoop.
Add your most awkward part as a fourth. We will come back within 24 hours with which parts belong on a panel bender, which should stay on a press brake, and what the cell would look like.
Wil je liever eerst even praten?
WhatsApp: +86 18153226091
E-mail: [email protected]
Stuur uw wensen via ons beveiligde aanvraagformulier. Ons team neemt binnen 24 uur contact met u op.
Of u nu een bestaande lijn upgradet of een nieuw project start, STON past een CNC oplossing aan voor uw productie.
