Manufacturing and on-site assembly of welded assemblies, intermediate rigging for mining, as well as winches and drive units
Hofmeister Maschinen- und Stahlbau GmbH
Großschirma (Obergruna district)New on Amplifa
About us
Hofmeister Maschinen- und Stahlbau GmbH is a mechanical engineering and contract manufacturing company with around 16 employees at the traditional site of Großschirma-Obergruna in the valley of the Freiberger Mulde, about 15 km from Freiberg. The company manufactures welded parts, welded assemblies and welded constructions up to 5 tonnes (MAG welding, certified to DIN EN ISO 3834-2), framed sub-constructions for machines and production lines, rope winches and drive units for stage technology, as well as intermediate rigging and clamp sockets for mining. The process chain covers planning, material testing, sawing, oxy-fuel cutting, laser cutting, tacking and welding, sandblasting, turning (Ø up to 1600 mm, length up to 3000 mm), CNC drilling/milling (assemblies up to 8 tonnes), assembly and surface finishing. Materials are predominantly low-alloy structural steels such as S235 and S355 as well as quenched and tempered steels; in the mining sector, soft metal pours (lead) are also produced in the socket core. Production is carried out in small series and one-off custom manufacturing for machinery manufacturers in automation technology, the mining industry and stage technology; Hofmeister is one of the few authorised companies for the overhaul and remanufacture of mining equipment.
- Site
- Großschirma (Obergruna district)
- Processes
- Sawing (cutting of bar stock: flat, round and hollow profiles), Flame cutting (oxy-fuel cutting), Laser cutting (laser cutting), Welding (MAG welding, certified to DIN EN 3834-2 / ISO 3834-2), Sandblasting (outdoor dry blasting system, sandblasting booth for small parts, blasting abrasive, Turning (conventional and cycle-controlled lathes), Drilling/Milling (CNC drilling and milling machines, Heidenhain control), On-site assembly of assemblies (e.g. rope winches, incl. testing and machine passports)
- Materials
- S235, S355, S235JR, S355J2, S355J2+N, C45+N, 42CrMo4, 42CrMo4+QT
- Certificates
- DIN EN ISO 3834-2
- Employees
- 16
- Industries
- Automation technology, Mining, Stage technology, Mechanical engineering
- 01
Planning
- 02
Material testing
- 03
Sawing
- 04
Oxy-fuel/Laser cutting
- 05
Tacking and welding
- 06
Sandblasting
- 07
Turning
- 08
Drilling/Milling
- 09
Quality control
- 10
Surface finishing
- 11
On-site assembly
Materials & Processes
Structural steel S235
Low-alloy structural steel for blanks, flame-cut and laser-cut parts as well as welded constructions.
Structural steel S355
Low-alloy structural steel with higher strength, the most commonly used material for welded assemblies.
S355J2+N
Suitable for welded sub-constructions such as frames, brackets and stands.
Quenched and tempered steel C45+N
Used for highly stressed components in frames and mining intermediate rigging.
Quenched and tempered steel 42CrMo4
For highly stressed pins and drive components after heat treatment.
Soft metal (lead)
As a pour in the socket core for gentle rope anchoring in intermediate rigging.
Site
Großschirma
DEProduction and administration
- Part weight / size
- Assemblies up to 8 t (machining), welded parts up to 5 t
- Lot size
- One-off production to small series
- Materials
- Steels S235/S355, quenched and tempered steels, soft metal
- Horizontal boring mill
- CNC drilling and milling machine (Heidenhain control)
- Conventional medium and large lathes
- Cycle-controlled lathe with NC control
- Double mitre bandsaw Berg&Schmid
- Oxy-fuel flame cutting machine K701 NC
- Outdoor dry blasting system
- Sandblasting booth
- Mobile 3D coordinate measuring machine
Reference Parts
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Sawing (cutting of bar stock: flat, round and hollow profiles)Machining | Cutting tolerance ±0.1 mm | – | – | Small series/one-off production | S235, S355 |
| Flame cutting (oxy-fuel cutting)Forming | – | Sheet parts up to 100 mm | – | – | S235, S355 |
| Laser cutting (laser cutting)Cutting | – | Wall thicknesses up to 20 mm | – | – | S235, S355 |
| Welding (MAG welding, certified to DIN EN 3834-2 / ISO 3834-2)Joining | – | – | 5 tonnes | One-off production – Small series | Steel |
| Sandblasting (outdoor dry blasting system, sandblasting booth for small parts, blasting abrasiveSurface | – | – | – | – | Steel |
| Turning (conventional and cycle-controlled lathes)Machining | – | max. 3000 mm × Diameter up to 1600 mm | – | – | Steel |
| Drilling/Milling (CNC drilling and milling machines, Heidenhain control)Machining | – | – | Assemblies up to 8 tonnes | – | Steel construction components, Forged parts, Cast parts |
| On-site assembly of assemblies (e.g. rope winches, incl. testing and machine passports)Assembly | – | – | – | – | – |
| Surface finishing (painting, galvanising – cooperative service)Surface | – | – | – | – | – |
| Material testing / non-destructive testing (ultrasonic testing by experts)Testing | – | – | – | – | – |
| Quality control / dimensional inspection with 3D coordinate measuring machine (mobile, also at theTesting | – | – | – | – | – |
| Planning / production planning (drawing review, bills of materials)Engineering | – | – | – | – | – |
| New manufacture and refurbishment of intermediate rigging and clamp sockets (mining, per TASAssembly | – | – | up to approx. 1000 kg | – | S355J2+N, C45+N, 42CrMo4+QT |
| Soft metal pour in the socket core (lead pouring)Joining | – | – | – | – | Soft metal |
| Manufacture of welded frames, brackets and stands (sub-constructions forJoining | – | – | up to approx. 500 kg | – | S355J2+N, C45+N, 42CrMo4+QT |
| Manufacturing and on-site assembly of winches and drive unitsAssembly | – | – | up to approx. 600 kg | – | S235JR, S355J2, 42CrMo4 |
| Bending (oil pan etc.)Forming | – | – | – | – | – |
9 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Horizontal boring mill | – | – | – | – | Großschirma |
| CNC drilling and milling machine | – | – | Assemblies up to 8 tonnes | – | Großschirma |
| Conventional medium and large lathe | – | – | Ø up to 1600 mm, length max. 3000 mm | – | Großschirma |
| Cycle-controlled lathe (with NC control) | – | – | Ø up to 1600 mm, length max. 3000 mm | – | Großschirma |
| Double mitre bandsaw | Berg&Schmid | – | Cutting tolerance ±0.1 mm | – | Großschirma |
| Oxy-fuel flame cutting machine | K701 NC | – | Sheet parts up to 100 mm | – | Großschirma |
| Outdoor dry blasting system | – | – | – | – | Großschirma |
| Sandblasting booth | – | – | for small parts | – | Großschirma |
| 3D coordinate measuring machine (mobile) | – | – | – | – | Großschirma |
Additional services
Quality & Certification
Independent experts carry out non-destructive ultrasonic testing on safety-relevant components. Dimensional accuracy is assured with a mobile 3D coordinate measuring machine that can also be used at the customer's site; on request, Hofmeister provides welding acceptance reports, material certificates and machine passports.
| Evidence | Großschirma |
|---|---|
| DIN EN ISO 3834-2 |
History
- 17. Jahrhund
Hammer mill on the Freiberger Mulde, powered by water power
Intermediate rigging has been manufactured by Hofmeister (formerly Münzner) for more than 100 years
Participation in a publicly funded research project to develop a recuperation system for light commercial vehicles up to 12 t