Nous sommes responsables de la construction-----nous sommes responsables de la fabrication-----nous sommes responsables de la formation
Drawer fronts, door leaves and locker wraps in 0.5–1.0 mm pre-painted sheet — formed without a single manual lift, and without a scratch on the visible face.
Metal furniture is the highest-volume, thinnest-gauge corner of sheet metal. A locker or filing cabinet is built from a small number of part types — drawer fronts, drawer boxes, door leaves, shelf panels, body wraps — each repeated thousands of times a month in 0.5 to 1.0 mm pre-painted or galvanised sheet. Because the part count per cabinet is low and the volume per part is enormous, the economics are decided by two things only: seconds per part et scrap caused by handling damage.
That points at a specific machine set. Blanks come from a coil-fed line or a laser à fibre. Forming is done on a Cintreuse de panneaux CNC with vacuum pick-up, or on a flexible edge folding machine where the part needs dead edges, offsets or arc bends. Loading and unloading is automated from the start, not added later — on 0.6 mm painted sheet, every manual handling step is a scrap risk. A press brake stays for brackets and hardware mounts only.
STON CNC (Qingdao Ston Mechanical Technology Co., Ltd.) is a Chinese original manufacturer of CNC panel benders and turret punch presses, founded in 2006 in Qingdao, China. All equipment described here is built inside STON CNC's own 20,000㎡ factory, from casting and heat treatment through machining, assembly and inspection. Machines carry ISO 9001 quality certification and CE marking under Machinery Directive 2006/42/EC, and are exported to more than 80 countries. View certifications and patents →
Metal furniture production is the opposite of job-shop work: very few part types, very high repetition, very thin material, and a visible painted face that cannot be marked. That combination is exactly where automated panel bending pays back fastest.
A 0.6 mm pre-painted drawer front picks up a scratch from a glove, a bench edge or a back gauge. Rework means stripping and repainting, which costs more than the part. Vacuum pick-up with a patented 360° rotating suction feeder moves the blank without touching the visible face at all.
Below 0.8 mm, springback and edge waviness turn into visible defects on a flat door face. Closed-loop servo bending with rapid compensation adjustment holds the angle across the full length instead of relying on an operator to shim and retry.
When one part runs 20,000 times a month, two seconds of cycle time is a shift per month. Press-brake pacing is operator-limited; a panel bender folds all four sides from one clamping, and with automatic loading it keeps running through breaks and shift changes.
Metal furniture is the one industry where we push customers towards automation earlier than they expect. At locker volumes, a manual-load machine becomes the bottleneck within a year.
Metal furniture sits comfortably inside the forming window — the risk here is not thickness, it is part size at the small end. Drawer components and plinth sections often sit close to the minimum forming dimension, which is the first thing our engineers check on your drawings.
| Paramètres | Plieuse de tôles | Flexible edge folding machine | Notes |
|---|---|---|---|
| Typical furniture gauge | 0.5–1.0 mm | 0.5–1.0 mm | Well inside capacity |
| Cold-rolled steel max | ≤1.5 mm welded / ≤2.0 mm cast | — | At full bending length |
| Stainless steel max | ≤1.0 mm welded / ≤1.2 mm cast | — | For stainless furniture ranges |
| Max forming size | 1000 × 1000 to 2800 × 1500 mm | 1200 × 1200 to 2000 × 1500 mm | By model |
| Min four-sided inner size | approx. 140 × 190 mm | 200 × 200 mm | Check small drawer parts here |
| Minimum bending height | 5 mm | 4 mm | Below this, press brake or custom tooling |
| Max bending height | 170 / 300 / 400 mm | 100 mm | By configuration |
| Special processes | Positive and negative bending, 0–180° | Arc, dead edge, offset | Hemmed drawer edges use dead edge |
| Angle accuracy | approx. ±0.5°/m | approx. ±0.5°/m | Straightness approx. 0.2 mm/m |
| Utilities | Three-phase 380 V, 0.6 MPa air | Configured to destination voltage | |
Four-sided folded panels in 0.5–1.0 mm repeated at high volume, with a visible painted or coated face that must stay unmarked. This is the strongest case for automated panel bending anywhere in sheet metal.
Roll-formed shelving uprights and rack posts, deep-drawn parts, wire products, and any drawer component whose four-sided inner size falls below the minimum forming dimension.
Hardware mounts, lock reinforcement plates, hinge brackets and prototype runs. One press brake alongside an automated cell covers everything the bender should not be set up for.
Risk assessment follows EN ISO 12100; safety-related control functions such as light-curtain interruption and emergency stop are specified to EN ISO 13849-1. Hydraulic press brakes supplied into the EU are built against EN 12622. Machines placed on the EU market carry CE marking under Machinery Directive 2006/42/EC with the accompanying technical file. Quality management is certified to ISO 9001, and machined structural tolerances follow ISO 2768. For the finished furniture, most export markets reference EN 16121 for non-domestic storage furniture (strength, durability and stability) — the forming tolerances and joint consistency your product needs to pass it are set at the bending stage.
On the machines this means fully enclosed rear fencing, protective covers on all protruding moving parts, laser guarding that halts motion when the protected zone is broken, over-tonnage protection on turret punch presses, and grating-ruler offset-load detection on panel benders.
Metal furniture factories usually need two of these three. The split is decided by whether the part needs a hemmed or arc edge, and by how small the part is.
| Cintreuse de panneaux CNC | Flexible edge folding machine | Presse plieuse CNC | |
|---|---|---|---|
| Best for | Four-sided boxes and drawers | Panels needing dead edge, arc or offset | Brackets, hardware, prototypes |
| Typical furniture parts | Drawer boxes, door leaves, body wraps | Hemmed drawer fronts, curved shelf edges | Lock plates, hinge mounts |
| Max bending height | 170 / 300 / 400 mm | 100 mm | Tool-dependent |
| Min four-sided inner size | approx. 140 × 190 mm | 200 × 200 mm | No practical limit |
| Handling of painted face | Vacuum pick-up, no contact | Suction feeding, no contact | Manual, contact at every step |
| Operators | 1, or 0 with automatic loading | 1, or 0 with automatic loading | 1–2 |
| Economic batch | Medium to very high volume | Medium to very high volume | One-off to medium |
| Does STON supply it? | Yes | Yes | Yes |
If your range uses roll-formed shelving uprights or wire drawer runners, those come from a different process and a different supplier — we will tell you that at the drawing-review stage rather than after the order.
Figures below describe the direction and mechanism of the change. Actual results depend on your part mix, batch size and shift pattern — we model them against your own drawings before quoting.
| Item | Press brakes only | Panel bender cell with vacuum loading |
|---|---|---|
| Operators at the bending station | 2 per machine on door leaves | 1, or unattended with automatic loading |
| Handling per four-sided part | 4 lifts and rotations | 1 vacuum pick, machine does the rest |
| Bend cycle | Operator-paced | 0.2 s per bend, 5,000+ bends per day (STON published figures) |
| Scratch and dent scrap on painted sheet | Risk at every manual touch | No contact with the visible face |
| Angle consistency across 10,000 parts | Drifts with operator and shift | Closed-loop servo, ±0.5°/m |
| Changeover between drawer sizes | Tool swap and gauge reset | Program recall plus rapid compensation adjustment |
| Night shift | Requires full crew | Runs unattended with automatic loading and stacking |
Payback logic we use with customers: (annual labour released + reduction in rework and scrap + additional saleable output) ÷ installed equipment cost. We build this with your real numbers rather than publishing a headline figure that would not match your plant.
Vacuum-gripped feeding designed for thin, coated sheet. Patented 360° rotating suction pick-up, full-electric servo closed-loop control, cast or welded frames, cabinet air conditioning for constant-temperature electrics.
View suction cup type →
Arc, dead edge and offset bending up to 2000 × 1500 mm, minimum bending height 4 mm. Up to 25 concurrent servo axes, 42CrMo forged blank holder, fully enclosed safety fencing.
View folding machine →
Lock holes, ventilation slots, shelf-pitch slotting and stiffening ribs in one clamping. Brush and steel-ball composite table protects coated surfaces; ±0.1 mm accuracy, turret speed to 40 rpm.
View SF series →
Uncoiling, levelling and laser blanking under one control system. Levelling accuracy ±1 mm/m² keeps 0.6 mm door faces flat, coil width 200–1500 mm, coil weight ≤10 T.
View production line →
Exchange-table fiber laser so the next sheet loads while the current one cuts. Burr-free edges matter on furniture parts that are handled by end users, not just assemblers.
View laser unit →
Native interface on every panel bender, compatible with most robotic arm and gantry brands. Removes the two-person lift on locker door leaves and lets the cell run through breaks.
View truss system →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 locker or drawer line does not become a six-month subcontracting problem.
Furniture production runs to retail delivery windows and container bookings. A stopped bending cell stops the paint line behind it, so response time matters more than any single number on the datasheet.
Specifications on this page verified against STON engineering documentation on 4 August 2026. Forming limits are confirmed against your own drawings before quotation. Published on 4 August 2026 · Last updated 4 August 2026 · Reviewed by Vicky Xu, Head of Overseas Sales.
We will come back within 24 hours with a machine recommendation, a bend-sequence check on your smallest part, and an honest answer on whether the whole family fits one cell.
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