Apparatus for marking workpieces and samples subjected to stress or strain or pressure loads for testing and having a pneumatic spacer and clamp cylinder

摘要

The apparatus marks workpieces or samples which are subjected to loading by pulling, pressing, bending or changing, using markers adhered to the workpiece. The apparatus has a printer (1) with an ink jet printhead (11) to mark the surface, and a sample plate (2) motor driven relative to the printhead. A positioning device (4) sets the distance between the printhead and the surface. This has a pneumatic distance sensor (42) and a clamp cylinder (43).