Impress

According to DIN 8583, indentation is the reshaping of the surface of a workpiece with a forming tool (e.g. stamp ) (often with a low feed rate ) and high pressure ( pressure reshaping ).

Indentation process

According to DIN 8583, there are fifteen different methods of indentation. They are further subdivided according to two criteria:

• Processes with rectilinear movement of the tools and those with revolving (rotating) movement
• Moving without sliding, i.e. without moving the tools over the surface of the workpiece (mostly perpendicular to the surface) and moving with sliding.

	without sliding	with sliding
Straight-line movement	Punching , pressing in with the help of a pointed tool, e.g. As for the landing and centering point for a drill to mark Notches , using a wedge-shaped tool Embossing , impressing relatively flat shapes in a surface, e.g. B. in the manufacture of coins Countersinking , pressing in a molding tool to produce relatively deep shapes in a workpiece surface Thorns , with a rounded tool Piercing the low-waste producing a hole by two-sided mandrels Hollow mandrels for creating a hole with a good cylindrical hole shape with a hollow mandrel that is pressed through the workpiece Embossing straightening , indentation of a tool with raster- shaped elevations to produce flat workpieces	Furrows , e.g. B. for marking Press flat with a straight movement
Circulating movement	Roll embossing , pressing an engraved rotating tool into a workpiece surface Knurls / cords for generating regular patterns on a cylindrical workpiece surface, e.g. B. to improve the handling of screw heads	Thread grooves for the production of internal threads of high strength Press flat with a rotating movement

literature

• Raphael Petry: Impressions in: Hartmut Hoffmann , Reimund Neugebauer , Günter Spur : Handbuch Umformen , Hanser, 2012, pp. 310–317.