Special machine construction & automation

Cut-off machine

Ensuring pipe cleanliness

Capillary tube cutting process

process description: The cutting of capillary tubes is a critical step in the manufacture of differential pressure measurement devices. These tubes are then welded to a membrane and filled with various media under a medium vacuum.
challenge: In order to prevent damage to the fine membranes, it is crucial that no sharp chips remain in the pipe during the cutting process.

Importance of the membrane

The membrane plays a central role both for the functionality of the measuring device and for the safety of the measurement medium, which must not escape for reasons of purity.

Existing problems in the cutting process

Chip formation and hole lubrication

The previous process, which was carried out with a flex station, produced chips which led to the capillary hole being lubricated. This required regrinding, which caused additional material abrasion and abrasive corundum residues.

Refinishing supplies

The openings had to be re-drilled to a diameter of 0.7 to 1.9 mm in order to achieve the fine pipe diameter. This increases complexity because smaller diameters are less clogged, but redrilling can produce chips.

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Optimization through automation

The automation of the cutting process enables precise and efficient processing with a high degree of repeatability, regardless of the experience of the operating personnel. This step almost completely eliminates the risk of disc breakage.

Innovative clamping unit

By introducing a prism guide with a clamping lever, we achieve universal, size-independent fixation of capillary tubes and tubes. In addition, specially adapted protective tubes protect the sensitive components, which not only saves set-up times, but also increases safety and durability.

Increasing efficiency in production

The redesign of the machine and processes has significantly improved efficiency by reducing rework and eliminating waste. This optimization now enables us to produce over 200 capillary units per shift more efficiently and with higher quality.