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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.) ist ein chinesischer Originalhersteller von CNC-Schwenkbiegemaschinen und CNC-Stanzmaschinen mit Revolverkopf, gegründet 2006 in Qingdao, China. Alle hier beschriebenen Maschinen werden in STON CNCs eigener 20.000 m² großer Fabrik gefertigt – vom Gießen und der Wärmebehandlung über die Zerspanung bis hin zur Montage und Prüfung. Die Maschinen tragen die ISO 9001-Qualitätszertifizierung und die CE-Kennzeichnung gemäß Maschinenrichtlinie 2006/42/EG und werden in mehr als 80 Länder exportiert. Zertifikate und Patente ansehen →
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 | Schwenkbiegemaschine | Flexible Kantenfaltmaschine | Anmerkungen |
|---|---|---|---|
| Typical gauge | 0.8–1.5 mm | 0.8–1.5 mm | Deutlich unterhalb der Kapazitätsgrenze |
| Cold-rolled / coated max | ≤ 2,0 mm gegossen / ≤ 1,5 mm geschweißt | 0,5–2,0 mm | Bei voller Biegelänge |
| Edelstahl max. | ≤ 1,2 mm gegossen / ≤ 1,0 mm geschweißt | — | Check sterilizer and hygienic parts |
| Maximale Umformgröße | bis zu 2800 × 1500 mm | 1200 × 1200 bis 2000 × 1500 mm | Nach Modell |
| Min. vierseitige Innenmaße | ca. 140 × 190 mm | 200 × 200 mm | Small instrument housings check here |
| Mindestbiegehöhe | 5 mm | 4 mm | Hemmed cleanable edges |
| Spezielle Verfahren | Positive and negative, 0–180° | Bogen, tote Kante, Versatz | Cleanable edges use dead edge |
| Stanzgenauigkeit | ±0.1 mm on turret punch press | Wiederholgenauigkeit ca. ±0,01–0,02 mm | |
| Winkelgenauigkeit | approx. ±0.5°/m, straightness approx. 0.2 mm/m | Stored per part number | |
| Versorgungsanschlüsse | Dreiphasig 380 V, 0,6 MPa Druckluft | Auf die Netzspannung am Einsatzort ausgelegt | |
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.
Die Risikobeurteilung erfolgt nach EN ISO 12100; sicherheitsbezogene Steuerungsfunktionen wie die Unterbrechung des Lichtvorhangs und der Not-Halt sind gemäß EN ISO 13849-1. festgelegt. Hydraulische Abkantpressen, die in die EU geliefert werden, werden nach EN 12622. gebaut. Auf dem EU-Markt bereitgestellte Maschinen tragen die CE-Kennzeichnung gemäß Maschinenrichtlinie 2006/42/EG mit der zugehörigen technischen Dokumentation. Das Qualitätsmanagement ist zertifiziert nach ISO 9001, und bearbeitete strukturelle Toleranzen richten sich nach 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.
An den Maschinen bedeutet dies eine vollständig geschlossene Rückwandverkleidung, Schutzabdeckungen an allen herausragenden beweglichen Teilen, eine Laser-Schutzeinrichtung, die die Bewegung stoppt, wenn der Schutzbereich verletzt wird, einen Übertonnage-Schutz an Stanz-Nibbelmaschinen sowie eine Gitterlineal-Schräglasterkennung an Schwenkbiegemaschinen.
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.
| Fiber laser | CNC turret punch | Punch-laser combined | |
|---|---|---|---|
| New variant, no tooling | Sofort | Within tooling library | Good |
| Repeating service cut-outs | Pierces each feature | Fastest | Fastest |
| Louvres, ribs, thread prep | Nein | Ja | Ja |
| Baffle slotting | Slow at density | Schnell | Schnell |
| Randbedingung | Burr-free | Leichte Grate, Entgraten möglicherweise erforderlich | Mixed |
| Stellfläche | Mittel | Mittel | approx. 40% less than both |
| Best time to buy | First machine | Once patterns repeat | When one part needs both |
| Liefert STON dies? | 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.
Die folgenden Zahlen veranschaulichen die Richtung und den Mechanismus der Veränderung. Die tatsächlichen Ergebnisse hängen von Ihrem Teilespektrum, der Chargengröße und dem Schichtmodell ab – vor der Angebotserstellung modellieren wir sie anhand Ihrer eigenen Zeichnungen.
| 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 | One clamping on the turret punch |
| 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 | Unterbricht die Zelle — eine manuelle Maschine vorhalten |
Amortisationslogik, die wir mit Kunden verwenden: (freigesetzte Jahresarbeitskraft + Reduzierung von Nacharbeit und Ausschuss + zusätzlicher verkaufsfähiger Ausstoß) ÷ Kosten der installierten Anlage. Wir erarbeiten dies mit Ihren tatsächlichen Zahlen, statt eine Kennzahl zu veröffentlichen, die nicht zu Ihrem Werk passen würde.
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.
SF-Serie ansehen →
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.
Pressarmtyp anzeigen →
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.
Abkantmaschine anzeigen →
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.
Lasergerät anzeigen →
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.
Zur 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.
View PBE 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 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.
Die technischen Daten auf dieser Seite wurden am 4. August 2026 anhand der technischen Unterlagen von STON überprüft. Die Umformgrenzen werden vor der Angebotserstellung anhand Ihrer eigenen Zeichnungen bestätigt. Veröffentlicht am 4. August 2026 · Zuletzt aktualisiert am 4. August 2026 · Überprüft von Vicky Xu, Leiterin des Auslandsvertriebs.
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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