Contract manufacturing in machining: CNC milling, turning and deep-hole drilling of demanding components at three locations.
PRIRO GROUP
Wolfsburg · Salzwedel · CelleNew on Amplifa
About PRIRO
The PRIRO Group is a family-owned group of companies with three entities specialising in machined production. As a contract manufacturer, the group produces prismatic and rotationally symmetric components: at 4- and 5-axis machining centres, prismatic parts are made from solid stock and castings and forgings are machined; turn-mill centres, CNC lathes, sliding-headstock automatic lathes and a vertical turning machine cover turning diameters from 3 to 3,000 mm. In-house deep-hole drilling machines enable centric and eccentric boreholes up to 3,000 mm deep. The service portfolio also includes cutting by band saws, wire EDM, roller burnishing (surface and deep rolling), cylindrical and surface grinding, assembly manufacturing including assembly work, and tool and jig construction. Geared to series production, pallet handling systems and bar feeders are used. Processes such as welding, honing, blasting, heat treatment and painting are offered with cooperation partners. Customers come from oil production, shipbuilding, railway engineering, aerospace engineering and agriculture. Production takes place in Wolfsburg, Salzwedel and Celle; the sales head office is located in Salzwedel.
- Site
- Wolfsburg
- Processes
- Milling (4-/5-axis, multi-axis machining), Turning (multi-axis machining, CNC), Turn-mill centres, Sliding-headstock automatic lathes, Vertical turning, Deep-hole drilling (round workpieces), Deep-hole drilling (eccentric), Deep-hole drilling (cubic workpieces)
- Materials
- CNC Milling 4-/5-Axis, CNC Turning, Deep-Hole Drilling, Wire EDM, Surface and Deep Rolling, Solid Material, Castings, Forgings
- Certificates
- ISO 9001, First-article inspection, 3D coordinate measurement
- Industries
- Oil production, Shipbuilding, Railway engineering, Aerospace engineering, Agriculture
- 01
Sawing/Cutting (bar and plate material)
- 02
CNC milling (4-/5-axis)
- 03
CNC turning (turn-mill centres, sliding-headstock automatic lathes, vertical
- 04
Deep-hole drilling
- 05
Wire EDM
- 06
Roller burnishing/Grinding
- 07
Part cleaning
- 08
Assembly/Assembly manufacturing
- 09
Quality inspection (3D coordinate measuring machines)
Processes and Materials
CNC Milling 4-/5-Axis
Prismatic components from solid stock as well as machining of castings and forgings up to 4,000 x 3,000 x 2,000 mm.
CNC Turning
Rotationally symmetric components from sliding-headstock automatic lathes (from 3 mm) to vertical turning machines (3,000 mm diameter).
Deep-Hole Drilling
Centric boreholes up to 3,000 mm deep and eccentric boreholes with high length-to-diameter ratio.
Wire EDM
Complex contours in high precision for workpieces up to 800 x 800 x 400 mm at the Salzwedel location.
Surface and Deep Rolling
Surface roughness reduction of 50–95 % or the introduction of compressive residual stresses up to 1–2 mm depth to increase dynamic strength.
Solid Material, Castings, Forgings
Raw materials machined by milling according to the service description.
Locations
Wolfsburg
DEProduction, HR department (PRIRO Metallverarbeitung GmbH)
- Part weight / size
- Milled parts up to 4,000 x 3,000 x 2,000 mm
- CNC machining centres
- Vertical and horizontal band saws
- 3D coordinate measuring machines (Zeiss)
Salzwedel
DEProduction, sales head office, wire EDM (PRIRO Zerspanungstechnik GmbH & Co. KG)
- Part weight / size
- EDM parts up to 800 x 800 x 400 mm
- Wire EDM machines (GF)
- CNC lathes
- Vertical and horizontal band saws
Celle
DEProduction (PRIRO CNC-Fertigungstechnologie GmbH)
- CNC lathes
- Vertical and horizontal band saws
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Milling (4-/5-axis, multi-axis machining)Machining | – | 4,000 mm × 2,000 mm × 3,000 mm | – | – | Solid material, Castings, Forgings |
| Turning (multi-axis machining, CNC)Machining | – | 4,500 mm × 900 mm diameter | – | – | – |
| Turn-mill centresMachining | – | 2,000 mm × 600 mm diameter | – | – | – |
| Sliding-headstock automatic lathesMachining | – | 38 mm diameter | – | – | – |
| Vertical turningMachining | – | 3,000 mm diameter × 1,000 mm | – | – | – |
| Deep-hole drilling (round workpieces)Machining | – | 3,000 mm drilling depth (centric) × 125 mm diameter | – | – | – |
| Deep-hole drilling (eccentric)Machining | – | 2,000 mm drilling depth × 25 mm diameter | – | – | – |
| Deep-hole drilling (cubic workpieces)Machining | – | 1,500 mm drilling depth × 30 mm diameter | – | – | – |
| Sawing (cutting of bar and plate material)Machining | – | 4,000 mm × 1,200 mm × 1,200 mm | – | – | – |
| Wire EDMMachining | – | 400 mm × 800 mm × 800 mm | – | – | – |
| Roller burnishing (surface rolling: roughness smoothing 50%-95%; deep rolling: compressive residualForming | Roughness reduction of 50%-95% | – | – | – | – |
| Grinding (cylindrical and surface grinding)Machining | – | – | – | – | – |
| Assembly manufacturing incl. assemblyAssembly | – | – | – | – | – |
| Assembly and inspection fixtures, jig construction, toolmakingEngineering | – | – | – | – | – |
| Measurement servicesTesting | – | 6,000 mm × 3,000 mm × 3,000 mm | – | – | – |
| Part cleaningSurface | – | 300 mm × 660 mm × 480 mm | – | – | – |
| WeldingJoining | – | – | – | – | – |
| HoningSurface | – | – | – | – | – |
| Glass bead and corundum blastingSurface | – | – | – | – | – |
| Surface coatings incl. paintingSurface | – | – | – | – | – |
| Heat treatmentHeat treatment | – | – | – | – | – |
| Non-destructive crack testingTesting | – | – | – | – | – |
14 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC machining centres | DMG MORI, Hermle, Heckert, SHW | 21 | Workpieces up to 2,000 x 3,000 x 4,000 mm | – | – |
| Turn-mill centres | DMG MORI, Traub | 10 | Workpieces up to 600 mm diameter and 2,000 mm length | – | – |
| CNC lathes | DMG MORI, Traub, Niles, Doosan | 17 | Workpieces up to 900 mm diameter and 4,500 mm length | – | – |
| Sliding-headstock automatic lathes | DMG MORI | 2 | Components up to 38 mm diameter | – | – |
| Cycle-controlled lathes | Weiler | 5 | Workpieces up to 800 mm diameter and 3,000 mm length | – | – |
| Vertical turning machine | Schiess | 1 | Workpieces up to 3,000 mm diameter and 1,000 mm height | – | – |
| Deep-hole drilling machines (round workpieces) | TBT | – | centric boreholes up to 3,000 mm depth and 125 mm diameter; eccentric boreholes up to 2,000 mm | – | – |
| Deep-hole drilling machines (cubic workpieces) | Ixion | – | up to 1,500 mm depth and 30 mm diameter | – | – |
| 3D coordinate measuring machines | Zeiss | 4 | Workpieces up to 3,000 x 3,000 x 6,000 mm | – | – |
| Measuring and straightening plate | – | 1 | 3,000 x 6,000 mm | – | – |
| Horizontal band saws | Behringer | 4 | Cutting dimensions up to 460 x 550 x 2,000 mm | – | – |
| Vertical band saws | Behringer, Mössner | 4 | Cutting dimensions up to 1,200 x 1,200 x 4,000 mm | – | – |
| Wire EDM machine | GF | – | Workpieces up to 800 x 800 x 400 mm | – | Salzwedel |
| Part cleaning system | Pero | 1 | Workpieces up to 660 x 480 x 300 mm | – | – |
Additional services
Quality
First-article inspection after every set-up and operator self-inspection of every part are integral parts of production. Four Zeiss 3D coordinate measuring machines (measuring room up to 3,000 x 3,000 x 6,000 mm) and a measuring and straightening plate (3,000 x 6,000 mm) safeguard quality; the QM system is certified to ISO 9001.
| Evidence | Wolfsburg | Salzwedel | Celle |
|---|---|---|---|
| ISO 9001 | |||
| First-article inspection | |||
| 3D coordinate measurement |
History
Over 40 years of experience in machining according to company statement; no specific founding year is given.