Job manufacturing by electroerosion: wire and sink erosion, micro-drilling, laser engraving and precision measurement
Derwa Technology SA
Saignelégier (CH) · Rue du Pâquier 16A, 2350 SaignelégierNew on Amplifa
About Derwa Technology
Derwa Technology SA, based in Saignelégier in the Swiss Jura, is a supplier for job manufacturing by electroerosion. Founded in 1986, the company manufactures components by wire erosion (17 machines), sink erosion and erosive high-speed/micro-drilling with hole diameters from 0,1 mm, complemented by precision CNC milling for electrode manufacturing as well as laser marking, micro blasting, polishing and ultrasonic cleaning. Materials are all metals, in particular stainless steel and tungsten carbide. Customers come from the watch industry, micro-mechanics, machine tool building and aerospace. On 600 m2 in a renovated industrial building on Rue du Pâquier, the company operates a modern machinery fleet from Mitsubishi, AgieCharmilles, Charmilles and Trotec as well as its own testing and measuring equipment (Tesa, Keyence, Marcel Aubert, Trimos).
- Site
- Saignelégier, Switzerland
- Processes
- Wire erosion (4-axis, cone/inclination, B-axis/erosive turning, twin wire, water/oil dielectric), Sink erosion (3-axis, planetary & orbital), High-speed drilling/micro-drilling by erosion (from Ø 0,1 mm, tungsten carbide electrodes; removal, Precision CNC milling (up to 35'000 U/min, milling of complex electrodes), Laser marking/engraving (MOPA, engraving in all metals, color engraving on stainless steel, deep, Sand blasting/micro blasting, Hand polishing (felt and diamond, Pizzi grinders), Ultrasonic cleaning / Bio-Circle washing systems
- Materials
- Stainless steel, Tungsten carbide, Wire erosion (4-axis, erosive turning), Sink erosion (3-axis, planetary & orbital), High-speed drilling/micro-drilling (EDM), Precision CNC milling, Laser marking/engraving (MOPA, Trotec), Sand blasting/micro blasting
- Certificates
- Conformity certificate on request, 3D/video/image measurement in-house
- Founded
- 1986
- Industries
- Watch industry, Micro-mechanics, Machine tool building, Aerospace
- 01
Order review and electrode manufacturing by CNC milling
- 02
Wire erosion / sink erosion / erosive micro-drilling
- 03
Laser marking and engraving
- 04
Blasting and hand polishing
- 05
Ultrasonic cleaning
- 06
Inspection and dimensional measurement
- 07
Conformity certificate and shipping
Materials & Processes
Wire erosion (4-axis, erosive turning)
Conical and inclined contours, erosive turning via B-axis, wire diameter 0,03–0,25 mm, water or oil dielectric, partly twin-wire technique.
Sink erosion (3-axis, planetary & orbital)
Complex cavities and shapes with electrode loaders up to 32 positions and Erowa measuring bench.
High-speed drilling/micro-drilling (EDM)
Holes from Ø 0,1 mm with tungsten carbide electrodes; also removal of broken thread taps and bits.
Precision CNC milling
Manufacturing of complex electrodes up to 35'000 U/min with tool loader up to 93 positions.
Laser marking/engraving (MOPA, Trotec)
Engraving in all metals, color engraving on stainless steel, deep engraving with rotary axis.
Sand blasting/micro blasting
Surface finishing and finishing of the parts at blasting stations.
Hand polishing (felt and diamond)
Fine grinding and polishing with Pizzi grinders for high-quality surfaces.
Ultrasonic cleaning / Bio-Circle
Low-particle cleaning of the manufactured parts before inspection and shipping.
Stainless steel
Main material for erosive manufacturing, among other things for color engraving by MOPA laser.
Tungsten carbide
Hard metal as a material and electrode technology in erosive micro-drilling.
Site
Saignelégier
CHProduction site and headquarters
- Materials
- All metals, stainless steel, tungsten carbide
- 17 wire erosion machines Mitsubishi & AgieCharmilles (4-axis, B-axis)
- 2 sink erosion machines Charmilles (planetary & orbital, 32 electrode positions)
- 3 high-speed drilling/micro-drilling machines (from Ø 0,1 mm)
- 2 precision CNC milling machines (up to 35'000 U/min)
- Trotec MOPA marking laser with rotary axis
- Tesa Micro Hyte 3D, Keyence image measurement, Marcel Aubert video measurement, Trimos measuring bench
- Blasting stations, Pizzi grinders, ultrasonic cleaning, Bio-Circle wash basins
Components & Manufacturing Services
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Wire erosion (4-axis, cone/inclination, B-axis/erosive turning, twin wire, water/oil dielectric)Machining | – | – | – | – | all metals |
| Sink erosion (3-axis, planetary & orbital)Machining | – | – | – | – | – |
| High-speed drilling/micro-drilling by erosion (from Ø 0,1 mm, tungsten carbide electrodes; removalMachining | – | – | – | – | – |
| Precision CNC milling (up to 35'000 U/min, milling of complex electrodes)Machining | – | – | – | – | – |
| Laser marking/engraving (MOPA, engraving in all metals, color engraving on stainless steel, deepSurface | – | – | – | – | all metals, stainless steel |
| Sand blasting/micro blastingSurface | – | – | – | – | – |
| Hand polishing (felt and diamond, Pizzi grinders)Surface | – | – | – | – | – |
| Ultrasonic cleaning / Bio-Circle washing systemsSurface | – | – | – | – | – |
| Dimensional measurement/inspection (3D, imaging, video measurement)Inspection | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Wire erosion machine | Mitsubishi & AgieCharmilles | 17 | Wire diameter 0,03–0,25 mm; B-axis (erosive turning) | – | Saignelégier |
| Sink erosion machine | Charmilles | 2 | 3-axis; electrode loader up to 32 positions; Erowa measuring bench | – | Saignelégier |
| High-speed drilling/micro-drilling machine (EDM) | – | 3 | Hole diameter from 0,1 mm; electrode loader 20 positions | – | Saignelégier |
| Precision CNC milling machine | – | 2 | up to 35'000 U/min; tool loader up to 93 positions | – | Saignelégier |
| Marking laser (MOPA) | Trotec | 1 | rotary axis | – | Saignelégier |
| Measuring and control devices (Tesa Micro Hyte 3D, Keyence image measurement, Marcel Aubert video | Tesa/Keyence/Marcel Aubert/Trimos | 1 | – | – | Saignelégier |
| Blasting stations, Pizzi grinders, ultrasonic cleaning, Bio-Circle wash basins | – | 1 | – | – | Saignelégier |
Additional services
Quality & Measurement Technology
Quality assurance includes 3D dimensional measurement (Tesa Micro Hyte 3D), imaging measurement systems (Keyence), video measurement (Marcel Aubert) and a Trimos measuring bench as well as gauge blocks, parallel gauge blocks and internal/external micrometers. A conformity certificate is issued on customer request.
| Evidence | Saignelégier |
|---|---|
| Conformity certificate on request | |
| 3D/video/image measurement in-house |
History since 1986
- 1986
Founding of Derwa SA by Jacques Wermeille and Daniel Gerster; the name is derived from the founders' names.
- 1986–1988
Operation in basement rooms in Noirmont; specialization in stamps for watch bracelets and watch cases.
- 1989
Move to Saignelégier; Alain Varrin joins; establishment of a plastics injection molding department; around a dozen employees.
- 1995
Sale of the injection molding department; focus on stamp, mold and tool making; start of job manufacturing by electroerosion.
- 1999
Alain Varrin leaves the company; Jacques Wermeille again becomes sole shareholder.
- 2006
Discontinuation of stamp manufacturing; complete concentration on contract erosion (EDM supply).
- 2007
Purchase of a renovated industrial building with 600 m² on Rue du Pâquier in the center of Saignelégier.
- 2018
Acquisition by Laurent Wermeille and workshop manager Maël Krause; renaming to Derwa Technology SA.