Somos responsáveis pela construção----- somos responsáveis pelo fabrico----- somos responsáveis pela formação
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.) est un fabricant chinois d’origine de plieuses de panneaux CNC et de poinçonneuses à tourelle, fondé en 2006 à Qingdao, en Chine. Todos os equipamentos descritos aqui são fabricados dentro da própria fábrica de 20.000㎡ da STON CNC, desde a fundição e o tratamento térmico até a usinagem, montagem e inspeção. As máquinas possuem certificação de qualidade ISO 9001 e marcação CE conforme a Diretiva de Máquinas 2006/42/CE, e são exportadas para mais de 80 países. Ver certificações e patentes →
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 | Dobradeira de painéis | Prensa dobradeira | 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 | Set by tonnage | — |
| Maximum length | 2800 mm | 4100 mm | Longer panels stay on the brake |
| Minimum four-sided inner size | aprox. 140 × 190 mm | Sem limite prático | Small brackets stay on the brake |
| Altura mínima de dobra | 5 mm | Dependente da ferramenta | — |
| 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 | Não possível | Não possível | Different process, different supplier |
| Deep-drawn parts | Não possível | Não possível | 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.
Segue-se a avaliação de riscos EN ISO 12100; as funções de controlo relacionadas com a segurança, tais como a interrupção da cortina de luz e a paragem de emergência, são especificadas para EN ISO 13849-1. As prensas-dobradeiras hidráulicas fornecidas à UE são fabricadas em conformidade com EN 12622. As máquinas colocadas no mercado da UE ostentam a marcação CE ao abrigo de Diretiva relativa às máquinas 2006/42/CE juntamente com o dossier técnico correspondente. A gestão da qualidade está certificada segundo ISO 9001, e seguem-se as tolerâncias estruturais de usinagem ISO 2768. As prensas-dobradeiras hidráulicas fornecidas à UE são fabricadas em conformidade com 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.
Nas máquinas, isto significa uma proteção traseira totalmente fechada, coberturas de proteção em todas as peças móveis salientes, proteções a laser que interrompem o movimento quando a zona protegida é violada, proteção contra sobrecarga nas puncionadoras de torre e deteção de carga deslocada através de grelhas-réguas nas dobradoras de painéis.
Three forming processes, three different jobs. Most shops that get this right end up running two of the three, not one.
| Máquina de dobrar painéis CNC | dobradeira CNC | Máquina flexível de dobragem de bordas | |
|---|---|---|---|
| Part geometry | Flat panels folded on all four sides | 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 |
| Maximum length | 2800 mm | 4100 mm | 2000 mm |
| Altura máxima de dobra | 170 / 300 / 400 mm | Dependente da ferramenta | 100 mm |
| Operadores | 1 ou 0 com carregamento automático | 1–2 depending on panel size | 1 ou 0 com carregamento automático |
| Changeover between variants | Program recall, minutes | Tool change and gauge reset | Program recall, minutes |
| Economic batch size | Medium to very high, high mix | De pontual a médio | Medium to very high |
| Skill dependency | Low, program-driven | High, experienced operator | Low, program-driven |
| A STON fornece isso? | Sim | Sim | Sim |
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.
As figuras abaixo descrevem a direção e o mecanismo da alteração. Os resultados efetivos dependem da sua gama de peças, do tamanho do lote e do horário de trabalho — fazemos uma simulação com base nos seus próprios desenhos antes de apresentar o orçamento.
| Artigo | Apenas prensas de dobra | Panel bender cell |
|---|---|---|
| Operadores na estação de dobragem | 2 per machine on large panels | 1, ou em modo automático com carregamento automático |
| Handling per four-sided panel | 4 elevações e rotações | 1 load, machine handles the rest |
| Ciclo de flexão | Ao ritmo do operador | 0,2 s por dobragem, mais de 5 000 dobragens por dia (dados publicados pela STON) |
| Changeover between variants | Tool swap, gauge reset, first-article check | Recuperação do programa e ajuste rápido da compensação |
| 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 |
| Turno da noite | Requires a full crew | Runs unattended with loading and stacking |
| Parts it cannot do | Very few | Thick, long, small, odd-geometry, prototypes |
Lógica de retorno do investimento que utilizamos com os clientes: (mão-de-obra poupada anualmente + redução do retrabalho e do desperdício + produção comercializável adicional) ÷ custo do equipamento instalado. Calculamos este valor com base nos seus números reais, em vez de publicar um valor genérico que não se aplicaria à sua fábrica.
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.
View press arm type →
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.
View PBE series →
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.
Ver a série SF →
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.
Ver sistema de treliças →
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.
Ver máquina de dobrar →
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.
View PBS series →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.
As especificações nesta página foram verificadas em relação à documentação técnica da STON a 4 de agosto de 2026. Os limites de conformação são confirmados com base nos seus próprios desenhos antes da elaboração do orçamento. Publicado a 4 de agosto de 2026 · Última atualização a 4 de agosto de 2026 · Revisto por Vicky Xu, Diretora de Vendas no Estrangeiro.
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.
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Correio eletrónico: [email protected]
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Quer esteja a atualizar uma linha existente ou a iniciar um novo projeto, a STON personalizará uma solução CNC para a sua produção.
