Power shaper
The Kraftformer is a machine for the non-cutting forming of sheet metal , pipes and profiles without the influence of heat ( cold forming ). With the machine, by changing the universally applicable tools, depending on the model, the following forming work can be carried out: upsetting , stretching , reshaping, clamping, crowning , smoothing and straightening . The tools were developed from 1948 by Walter Eckold, the inventor of the first upsetting machine.
history
Walter Eckold (1895–1963) applied for a patent in 1941 for a “machine for the non-cutting shaping of hand-controlled sheet metal or profiles”; However, due to the interruption of the work of the patent office due to the war, it was not issued until 1958. These upsetting machines were further developed and offered from 1950 under the name “Eckold Kraftformer” as a “universal machine for cold forming sheet metal and profiles”. The first Kraftformer KF 400 was built in 1950 in St. Andreasberg in the Harz Mountains . The production facilities for today's models are ECKOLD GmbH & Co. KG in St. Andreasberg (KF 470 Medium and KF 675 Magnum) and Eckold AG in Trimmis / Switzerland (KF 170, KF 170 PD, KF 324, KF 340, KF 800 and Handformer HF).
Areas of application
With a Kraftformer, profiles can be bent, sheet metal can be formed, repair work can be carried out and corrections can be made. Kraftformers are mainly used in the aviation industry , in boat and yacht construction , in wagon construction , in classic car restoration and in all other areas of sheet metal and metal processing.
Models and construction times
The Kraftformer models differ in terms of forming force, throat, stroke rate and pressure control.
| model | construction time | annotation |
|---|---|---|
| KF 400 | 1950-1953 | from 1952 also manufactured and sold under license by FOKKER NV Koninklijke Nederlandsche Viegenuigenfabriek in Schiphol / Netherlands |
| KF 453C | 1954-1955 | |
| KF 500 | 1952-1953 | |
| KF 653 C | 1954-1961 | |
| KF 653 CVA | 1961-1966 | |
| KF 653 CV | 1964-1968 | |
| KF 460 | 1967-2017 | |
| KF 470 medium | since 2017 | |
| KF 665 | 1965-2016 | |
| KF 675 Magnum | since 2014 | |
| KF 309 Piccolo | 1957-1973 | |
| KF 310 Piccolo | 1973-1979 | |
| KF 314 Piccolo | 1979-1992 | |
| KF 320 Piccolo | 1979-1992 | |
| KF 324 Piccolo | since 1992 | |
| KF 330 Piccolo | 1992-2011 | |
| KF 340 | since 2007 | |
| KF 170 PD | since 2002 | |
| KF 170 P | 1994-2002 | |
| KF 170 H | 1994-2002 | |
| PF 100 | 1990-1993 | |
| KF 800 | since 2019 |
Individual evidence
- ↑ Patent application DE969993: Machine for non-cutting shaping of hand-controlled metal sheets or profiles. Registered September 20, 1941, published August 7, 1958, applicant: Walter Eckold, inventor: Walter Eckold (business process; online at espacenet.com ).
- ↑ Hartmut Eckold: Sperrluttertal. Memories of the entrepreneur Walter Eckold. Second part 1948–1963 . Self-published by Hartmut Eckold, Haldenstein / Switzerland 2017, ISBN 978-3-03306152-1 .
literature
- Hartmut Eckold: Master years, memories of the entrepreneur Walter Eckold until 1948. 2nd edition. Self-published by Hartmut Eckold, Haldenstein / Switzerland, 2011, ISBN 978-3-033-02915-6 .
- Ron and Sue Fournier: Sheet Metal Handbook. Penguin Putnam Inc., New York, 1989, ISBN 0-89586-757-5 .
- Udo Lindemann, Ralf Reichwald, Michael F. Zäh (eds.): Individualized products - mastering complexity in development and production. Springer-Verlag, Berlin-Heidelberg, 2006, ISBN 978-3-540-34274-8 .
- William H. Longyard: Metalshaping: The lost sheet metal machines Vol. 7 . Private Publisher, USA, 2018, ISBN 978-0-578-20229-7
- Dr.-Ing. habil. Gerhard Oehler: Cutting, punching and drawing tools. Springer-Verlag, Berlin-Heidelberg, 1973, ISBN 978-3-642-97498-4 .