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Fume hoods, lab cabinets and instrument housings — many variants, small batches, cleanable edges, and a repeatability you can put in a technical file.
Medical and laboratory equipment is high-mix, low-volume, high-consequence work. A fume hood range, a lab cabinet programme and an instrument housing family together generate hundreds of part numbers in batches of tens, not thousands. That combination rules out dedicated tooling and rewards two capabilities in particular: tooling-free punching, so a new variant is a program rather than a die order, and program recall with stored compensation, so a part made six months ago is reproduced exactly rather than re-proved.
Two further requirements shape the process. Cleanability means folded, hemmed or dead edges rather than exposed cut edges, and radiused internal corners rather than sharp ones — geometry produced at the forming stage. And documentation means the same part must come out the same way batch after batch, because your quality system, not just your customer, depends on it. Program-driven forming with recorded compensation values is what makes that claim defensible.
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 →
These products share a profile: coated or stainless sheet between 0.8 and 1.5 mm, folded on all four sides, in dozens of size variants across a single product range.
A laboratory fit-out generates bespoke cabinet widths and hood configurations that may never be ordered again in that exact form. Tooling-driven processes cannot absorb this. Turret punching from a program and bending with automatic tool change turn a new variant into an afternoon of engineering rather than a tooling lead time.
Exposed cut edges collect contamination and fail inspection. Hemmed and dead edges, radiused returns and closed corners have to be formed, and a flexible edge folding machine produces them directly with a minimum folded height of 4 mm. Adding them later, by hand, is where small-batch margin disappears.
Service parts, retrofits and repeat orders arrive years after the original batch. If the part was set up manually, it is re-derived by whoever is available. Program recall with stored angle and compensation values means the tenth production of a part is dimensionally the same as the first — which is what a documented quality system actually requires.
For this sector the driver is variant count rather than volume. Configure for changeover speed first and throughput second.
Medical and laboratory work sits comfortably inside the forming window on thickness. The constraints that bite here are part size at the small end and stainless gauge on hygienic products.
| Parameter | Panelenbuigmachine | Flexibele randvouwmachine | Opmerkingen |
|---|---|---|---|
| Typical gauge | 0.8–1.5 mm | 0.8–1.5 mm | Ruim binnen de capaciteit |
| Koudgewalst / gecoat, max. | ≤2,0 mm gegoten / ≤1,5 mm gelast | 0.5–2.0 mm | Bij volledige buiglengte |
| Roestvrij staal max. | ≤1,2 mm gegoten / ≤1,0 mm gelast | — | Check sterilizer and hygienic parts |
| Maximale vormafmetingen | tot 2800 × 1500 mm | 1200 × 1200 to 2000 × 1500 mm | Per model |
| Min. binnenafmetingen (vier zijden) | ca. 140 × 190 mm | 200 × 200 mm | Small instrument housings check here |
| Minimum bending height | 5 mm | 4 mm | Hemmed cleanable edges |
| Special processes | Positief en negatief, 0–180° | Boog, dode rand, verschuiving | Cleanable edges use dead edge |
| Punching accuracy | ±0.1 mm on turret punch press | Herhaalbaarheid ca. ±0,01–0,02 mm | |
| Hoeknauwkeurigheid | approx. ±0.5°/m, straightness approx. 0.2 mm/m | Stored per part number | |
| Nutsvoorzieningen | Driefasig 380 V, 0,6 MPa perslucht | Ingesteld op de doelspanning | |
Four-sided panels and enclosures in 0.8–1.5 mm across many variants and small batches, with hemmed cleanable edges and dense service cut-outs. Changeover speed matters more here than cycle time.
Deep-drawn instrument bowls and pressed housings, extruded frame profiles, and small instrument enclosures whose four-sided inner size falls below the minimum forming dimension.
Small brackets, mounting plates, prototype housings and any part below the minimum four-sided forming size. In a high-variant shop the press brake also absorbs urgent service parts without interrupting the main cell.
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. For the finished product, EN 14175-2 sets safety and performance requirements for fume cupboards and ISO 13485 governs quality management for medical devices. Neither is a machine standard — but a documented quality system requires demonstrable production repeatability, and stored bend programs with recorded compensation values are a practical part of that evidence.
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.
In a high-variant shop this is a utilisation question. Most equipment manufacturers start with a laser and add punching when service cut-out patterns start repeating.
| Vezellaser | CNC-revolverponsmachine | Combinatie van ponsen en lasersnijden | |
|---|---|---|---|
| New variant, no tooling | Immediate | Within tooling library | Goed |
| Repeating service cut-outs | Pierces each feature | Snelste | Snelste |
| Louvres, ribs, thread prep | Nee | Ja | Ja |
| Baffle slotting | Slow at density | Fast | Fast |
| Edge condition | Burr-free | Slight burr, deburr may be needed | Mixed |
| Vloeroppervlak | Matig | Matig | ongeveer 40% minder dan beide |
| Best time to buy | First machine | Once patterns repeat | When one part needs both |
| Levert STON dit? | Ja | Ja | Ja |
Cleanable edge geometry is not produced by either cutting process — it comes from folding. If hemmed edges are specified across your range, a flexible edge folding machine belongs in the cell regardless of which blanking route you choose.
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 | Press brakes and manual setup | Programmed punch and bend cell |
|---|---|---|
| New cabinet width variant | Full setup and first-article proving | Program edit and recall |
| Repeat of a part made two years ago | Re-derived by the operator | Recalled with stored compensation |
| Cleanable hemmed edges | Multiple setups or manual finishing | Single folding operation |
| Service cut-out patterns | Laser plus secondary operations | Eén klem op de revolverponsmachine |
| Batch of 15 pieces | Setup dominates run time | Program recall, minimal setup |
| Dimensional evidence for the quality file | Operator records | Stored program and compensation values |
| Urgent service part | Immediate on a free brake | Interrupts the cell — keep a manual machine |
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.
Service cut-outs, baffle slotting, ventilation patterns and thread preparation in one clamping without dedicated dies. ±0.1 mm accuracy, turret speed to 40 rpm, brush and steel-ball composite table for coated sheet.
Bekijk de SF-serie →
Program recall with stored angle and compensation values per part number, plus automatic tool change between variant families. Rapid compensation adjustment along the bend line after each part change.
Bekijk het type persarm →
Dead edge, arc and offset bending with a 4 mm minimum folded height — how a cleanable hemmed edge is produced rather than hand-finished. 42CrMo forged blank holder, fully enclosed rear fencing.
Vouwmachine bekijken →
Tooling-free blanking so a bespoke variant never waits for a die. Exchange table loads the next sheet while cutting, with burr-free edges on coated and stainless sheet.
Laserunit bekijken →
Repeating service patterns and one-off apertures on the same housing in one clamping, in roughly 40% less floor space than two machines, with no re-clamping between operations.
Bekijk de SFL-serie →
Brackets, mounting plates, prototypes and parts below the minimum four-sided forming size. Multiple process parameter sets recalled with one click, multi-axis CNC back gauge, no hydraulic oil.
Bekijk de PBE-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 high-variant equipment cell does not become a six-month subcontracting problem.
Laboratory and hospital projects run to commissioning dates with penalties attached. A machine fault that delays a bespoke cabinet delays a room handover, which is why response time is part of the specification rather than an afterthought.
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.
Variant count and batch size decide the configuration, not headline volume. Send a range of drawings including your smallest housing and we return a configuration and a realistic changeover estimate within 24 hours.
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