Engraving machine

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Engraving machines are used where text or the like. to be brought into a metallic body. Watchmakers as well as precision mechanics use these mostly manual machines to give the piece of jewelery a personal touch or to put a scale on a measuring device.

CNC engraving machines are used in printing technology. Your job is to apply the negative of the printed matter to the outside of the printing cylinder. The embossing of handkerchiefs is also produced with a roller, the outer surface of which has been processed by engraving.

construction

Manual engraving machines

Wedding ring engraving machine in the Fellenbergmühle Fine Mechanics Museum

An engraving machine is basically constructed like a manual metal milling machine .

Components of an engraving machine:

  • Work table

The workpiece to be engraved is clamped on the work table, directly on the table or in a vice .

  • Stencil table

The stencil table takes the stencils. They are pushed into a dovetail groove on the table and clamped and locked with clamping elements. The stencils are made of brass and are around 40 mm in size. A character is about 30 mm high. In addition to the alphabet, special characters or other forms can also be used.

  • Tool spindle

The tool spindle picks up the burin , which has the task of removing the material in the workpiece. The spindle runs at a high speed (7500 - 10000 1 / min) because the burin only has a punctiform cutting edge and requires high speed. The spindle is driven by a thin, interwoven rope that adjusts itself. This is absolutely necessary because the movement of the spindle via the scissors transmission causes a constant change of place. The spindle can be lowered by 10 mm using a small lever to make it easier to switch between letters.

  • Scissors translation

The scissor translation is the key element of the engraving machine. She takes care of the translation and the scaling of the letter size. The significantly larger letters are traced on the template table with a guide pin. This movement is reduced to a factor that can be set up to 100 by the scissor transmission and is transmitted precisely in the corresponding reduction.

  • Machine stand

The machine stand carries the work table and template table, as well as all other machine elements.

  • Electric motor

application

  • Engraving of lettering in metal, mostly individual series
  • Engraving on the circumference of rings, cylindrical bodies or graduations

See also