System supplier for sheet metal working: laser cutting, forming, welding, assembly and logistics from a single source.
KWM Karl Weisshaar Ing. GmbH Blechbearbeitung
MosbachNew on Amplifa
Everything from a single source – the sheet metal process chain
KWM Weisshaar is a family business founded in 1979 in Mosbach with around 500 employees and is regarded as one of the largest sheet metal working suppliers in Germany. The company covers the entire sheet metal process chain: engineering with design, prototyping and toolmaking, sheet metal working with 2D and 3D laser cutting, punching, forming, machining and tube fabrication, joining and welding including bonding, assembly as well as logistics with warehousing and picking. Materials processed include steel, stainless steel, aluminium, copper and brass; in 2D laser cutting, steel up to 30 mm, stainless steel up to 25 mm and aluminium up to 15 mm are processed, and 3D laser components are possible up to 15 metres in length. Customers include Alstom, Heidelberger Druckmaschinen and John Deere; deliveries are made among others to the rail vehicle industry, mechanical engineering, the printing machinery, food and medical technology sectors as well as environmental and energy technology. The company is certified to ISO 9001:2015, DIN EN ISO 3834-2, EN 15085-2 CL1 and DIN 6701-2 (Class A2).
- Site
- Mosbach
- Processes
- Laser cutting (2D), Laser cutting aluminium up to 15 mm, Laser cutting stainless steel up to 25 mm, Laser cutting steel up to 30 mm, 3D laser cutting, Laser welding, Punching, Bending (press brake)
- Materials
- Steel, Stainless steel, Aluminium, Copper, Brass
- Certificates
- ISO 9001:2015, DIN EN ISO 3834-2, EN 15085-2 (CL1), welding of rail vehicles, DIN 2303 Q2/BK1 (defence technology welding), DIN 6701-2 Class A2 (bonding rail vehicle construction), DIN EN 17460 (bonding rail vehicles), EN 1090-2 (steel load-bearing structures) / EN 1090-3 (aluminium load-bearing, EN 15085-2 CL1, DIN 6701-2 Class A2, DIN EN 17460, DIN 2303 Q2/BK1, EN 1090-2 / EN 1090-3
- Founded
- 1979
- Employees
- ca. 500
- Industries
- Rail vehicle construction, Agricultural machinery, Environmental & energy technology (wind power), Aerospace/Navigation, Mechanical engineering, Printing machinery industry
- 01
Engineering (design, prototyping, toolmaking)
- 02
Laser cutting and punching
- 03
Forming (bending, roll bending, deep drawing, tube fabrication)
- 04
Machining (CNC milling, turning, sawing)
- 05
Joining and welding (laser, robot, spot welding, bonding)
- 06
Surface technology (pickling, blasting, painting, degreasing)
- 07
Assembly incl. electrical assembly and electrical testing
- 08
Logistics (warehousing, picking, KANBAN/JIT, export processing)
Materials and manufacturing processes
Steel
2D laser cutting up to 30 mm thickness; used in assemblies for mechanical engineering and rail vehicles.
Stainless steel
Laser cutting up to 25 mm plus fully automatic pickling line for stainless steel parts, e.g. for cleanroom and medical technology.
Aluminium
Laser cutting up to 15 mm; profile machining up to 8 m length and 1.5 m width, e.g. for interior fittings and air duct systems of rail vehicles.
Copper
Processing in sheet metal and tube fabrication.
Brass
Processing in sheet metal and tube fabrication.
Site
Mosbach
DEHeadquarters with production, administration and logistics
- Lot size
- Prototype to large series
- Materials
- Steel, stainless steel, aluminium, copper, brass
- 10 laser, punching and combination machines
- 2x Trumpf TruLaser Cell 7040 (3D, up to 15 m component length)
- Trumpf TruBend Cell 7000 (fully automatic bending cell)
- Lechner 4-roll roll bending machines 4200/67 and 4160/110
- Amada press brakes (among others HFE 3i 1003, 220 to / 3 m)
- Lauffer deep drawing press 280 to
- Hedelius FORTE 6 Magnum CNC milling machine
- MAKA PM 270 5-axis machining centre
- 6 kW fiber laser
- Dan Robotics Compact Welder welding robot
- Behringer VMS 350 metal circular saw
- Lissmac deburring and edge rounding machine
- Large-part painting line, pickling and degreasing line
- Blasting system with steel grit and stainless steel booths
- High-bay and picking warehouse (5,200 pallet spaces)
Components and assemblies
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Laser cutting (2D)Machining | – | – | – | – | Steel, Stainless steel, Aluminium, Copper, Brass |
| Laser cutting aluminium up to 15 mmMachining | – | – | – | – | Aluminium |
| Laser cutting stainless steel up to 25 mmMachining | – | – | – | – | Stainless steel |
| Laser cutting steel up to 30 mmMachining | – | – | – | – | Steel |
| 3D laser cuttingMachining | – | 15 metres (components) | – | – | Steel, Stainless steel, Aluminium |
| Laser weldingJoining | – | – | – | – | Aluminium, Steel, Stainless steel |
| PunchingForming | – | – | – | – | Steel, Stainless steel, Aluminium, Copper, Brass |
| Bending (press brake)Forming | – | – | – | – | Steel, Stainless steel, Aluminium |
| Roll bending (4-roll)Forming | – | – | – | – | Steel, Stainless steel, Aluminium |
| Deep drawingForming | – | – | – | – | – |
| Tube bending / tube fabrication (beading, offsets, hems, flanging)Forming | – | – | – | – | Steel, Stainless steel, Aluminium, Copper, Brass |
| Aluminium profile machining (milling)Machining | – | 8 metres × 1.5 metres | – | – | Aluminium |
| CNC drilling and millingMachining | – | – | – | – | Steel, Stainless steel, Aluminium |
| TurningMachining | – | – | – | – | – |
| SawingMachining | – | – | – | – | Steel, Stainless steel, Aluminium |
| Welding (laser, robot and conventional welding)Joining | – | – | – | – | Steel, Stainless steel, Aluminium |
| Spot welding (medium-frequency technology)Joining | – | – | – | – | Aluminium, Steel, Stainless steel |
| BondingJoining | – | – | – | – | – |
| Pickling (stainless steel)Surface | – | – | – | – | Stainless steel |
| Painting (large parts)Surface | – | – | – | – | – |
| Degreasing / pretreatmentSurface | – | – | – | – | – |
| BlastingSurface | – | – | – | – | Steel, Stainless steel |
| Deburring and edge roundingSurface | – | – | – | – | – |
| Assembly (HVAC units, large equipment, electrical, small equipment assembly)Assembly | – | – | – | – | – |
| Electrical testing after electrical assemblyTesting | – | – | – | – | – |
| Engineering (design 2D/3D, prototyping, toolmaking)Engineering | – | – | – | – | – |
| Logistics (warehousing, picking, KANBAN, just-in-time, export processing)Engineering | – | – | – | – | – |
25 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Milling machine | Hedelius FORTE 6 Magnum | 1 | – | – | Mosbach |
| 4-roll roll bending machine | Lechner 4200/67 | 1 | Sheet thicknesses 5-8 mm | – | Mosbach |
| 4-roll roll bending machine | Lechner 4160/110 | 1 | – | 2020 | Mosbach |
| 4-roll roll bending machine | Fasti | 1 | – | 2003 | Mosbach |
| Welding robot (compact cell) | Dan Robotics Compact Welder | 1 | – | – | Mosbach |
| Press brake | Amada HFE 3i 1003 | 1 | – | – | Mosbach |
| Press brake | Amada | 1 | 220 to, 3 m | 2021 | Mosbach |
| Metal circular saw | Behringer VMS 350 | 1 | – | – | Mosbach |
| Spot welding machine | PMP 6-5-300MF | 1 | – | – | Mosbach |
| Fully automatic bending machine (bending cell) | Trumpf TruBend Cell 7000 | 1 | unmanned small and large series | 2022 | Mosbach |
| CNC machining centre 5-axis | MAKA PM 270 | 1 | – | 2020 | Mosbach |
| 5-axis laser cutting and laser welding system | Trumpf TruLaser Cell 7040 | 2 | Components up to 15 m length | 2014 | Mosbach |
| Punch-laser combination | Trumpf TRUMATIC 6000 | 1 | – | 2002 | Mosbach |
| CNC punching machine with automatic material feed | Trumpf TRUMATIC 5000 | 1 | – | 2002 | Mosbach |
| Deep drawing press | Lauffer | 1 | 280 to | 2003 | Mosbach |
| Lathe with driven tools (automatic operation) | – | 1 | – | 2018 | Mosbach |
| Punching machine | Trumpf | 1 | – | 2018 | Mosbach |
| Deburring and edge rounding machine | Lissmac | 1 | – | 2021 | Mosbach |
| Fiber laser 6 kW | – | 1 | – | 2020 | Mosbach |
| Blasting system (steel grit and stainless steel abrasive booths) | – | 1 | – | 2010 | Mosbach |
| Pickling line (stainless steel, fully automatic) | – | 1 | – | 2003 | Mosbach |
| Large-part painting line | – | 1 | – | 2001 | Mosbach |
| Longitudinal seam and orbital welding system | – | 1 | – | 2006 | Mosbach |
| 6-axis measuring articulated arm | – | 1 | – | 2006 | Mosbach |
| 3D measuring machine | – | 1 | – | – | Mosbach |
Additional services
Reference customers
Quality and certifications
Quality assurance accompanies all areas from work preparation through production and assembly to goods dispatch, is oriented towards DIN, ISO and EN standards as well as VDA guidelines, and includes FMEA, test plans and initial sample inspection reports. State-of-the-art measuring equipment such as a 6-axis measuring articulated arm, a 3D measuring machine and height gauges are subject to regular monitoring of measuring equipment in accordance with VDI/VDE/DGQ 2618.
| Evidence | Mosbach |
|---|---|
| ISO 9001:2015 | |
| DIN EN ISO 3834-2 | |
| EN 15085-2 CL1 | |
| DIN 6701-2 Class A2 | |
| DIN EN 17460 | |
| DIN 2303 Q2/BK1 | |
| EN 1090-2 / EN 1090-3 |
Company history
- 1979
Company founded
- 1991
Entry into laser processing
- 1994
Expansion to include laser cutting, laser welding and tube cutting
- 1997
Expansion of production, warehouse and administration by 4,700 m²; start of picking operations
- 2004
New production and assembly hall (1,800 m²); certification to DIN EN ISO 9001:2000
- 2007
Expansion from 33,400 m² to approx. 57,000 m² with three additional production halls
- 2008
Punching/laser contract center, high-bay honeycomb warehouse, 110 kW photovoltaic system, establishment of a large-part welding shop
- 2009
Bonding certification to DIN 6701-2; 30th company anniversary
- 2011
Re-certification to DIN EN ISO 3834-2 and DIN EN 15085-2 CL1
- 2012
Re-certification to DIN 6701-2 (Class A2)
- 2014
Additional TruLaser Cell 7040 commissioned; machining of components up to 15 m in length
- 2015
Introduction of proALPHA as ERP system
- 2019
40th company anniversary, 518 employees
- 2020
Investments in Lechner roll bending machine 4160/110, MAKA PM 270 5-axis machining centre and 6 kW fiber laser
- 2022
Commissioning of the fully automatic bending machine TruBend Cell 7000; 488 employees
- 2023
Changeover of production control to resource planning with shop floor terminals; audits passed (ISO 9001 DEKRA, Alstom Generic Process Audit with 89.5% 'Qualified')