Riveting machine
A drive riveting machine, also known as a drive rivet stick , is a watchmaker's tool for precise, vertical guidance of counters . Hallmarks have different shapes that are needed for very different types of work.
description
The modern drive riveting machine consists of a frame with a punch guide and a rotatable rivet plate with circular holes. There is a removable anvil base underneath. In a wooden box or on a wooden plate, various flat, round and hollow marks are also staggered with anvils and stamps for the rivet plate. The parts are removed with the “punch lifter”.
In many cases, the riveting machine is also supplemented by a stone pressing device , so it is also suitable for pressing in bearing stones .
function
Depending on the work process, the selected hole in the rivet plate of the power riveting machine is centered with a special "centering punch". Then the rivet plate is fixed in the centered position with a knurled screw. The punch required for the work is guided exactly vertically and without play from above. The workpiece is placed between the punch and the rivet plate and then worked with a watchmaker's hammer . For certain work, small anvils can be inserted into the rivet plate from above.
The removable anvil base of the power riveting machine has two functions
- It serves as additional mass when riveting
- Any number of punches can be inserted into the anvil base from below through the rivet plate, which then serve as anvil for certain fine work.
The riveting machine and its punches and anvils are still used today for a great deal of work in watchmaking .
Application examples
- Rivets
- Narrow holes
- Punch holes
- Stretching - compressing the material
- Parts, Materials judge
- Press in parts - press out
- Pins, waves in - knock out
literature
- Theodore R. Crom: Horological shop tools, 1700 to 1900 ; Melrose, Florida 1980; ISBN 0-9604888-0-4
Individual evidence
- ↑ Fritz von Osterhausen: Callweys lexicon ; Munich 1999; ISBN 3-7667-1353-1 ; P. 335
- ↑ Lukas Stolberg: Lexicon of the pocket watch ; Carinthia Verlag; Klagenfurt 1995; ISBN 3-85378-423-2 ; P. 233
- ↑ Pocketwatch: riveting machine
- ↑ Hans Jendricki: The repair of the wristwatch ; W. Knapp; Halle (Saale) 1948