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Engineered Solutions MarSolution

Customer-specific Measuring Devices

Dynamic measurements of the inner diameter of cylinder bores and
wall thicknesses
• The cylinder liner measuring machine is a standalone version for
automatically measuring the inner diameter of bores and the wall
thickness of a diesel cylinder liner.
• A handling device allows fully automatic loading and unloading. The
measuring machine is directly integrated in the production line. The
cycle time for a complete measurement is less than 2 seconds.

• The measuring instrument consists of three stations:
• The first station is the charging station where the temperature of the
socket is measured.
• At the second station the inner diameter of the bore is measured
using a pneumatic plug gage. The second station also contains the
diameter setting master for the pneumatic plug gage; the plug gage
is automatically calibrated at regular intervals. This process guarantees
maximum measuring accuracy and stability of the measuring results,
even in the harshest of manufacturing environments.
• At the third station a tactile measurement determines the wall
thickness of the socket. The probes are automatically positioned
at the relevant measuring points after loading. The wall thickness
measurement takes just seconds. The probes are parked before the
socket is removed from the measuring device to minimize wear to the
contacting measuring elements.

Dynamic measuring of deformations in half-bearings

• Type 2152447 is an automatic standalone measuring instrument for
measuring dimensional changes caused by pressure to half-bearings
(e.g. for connecting rods).

• The half-bearing is automatically conveyed into the measuring machine
and inserted into the relevant test chamber (semicircular holder),
secured at one side, and a defined pressure is applied to the other
free side (e.g. according to the operating mode of the subsequent
motor assembly). A tactile probe system simultaneously measures
the dimensional change circumferential to the half-bearing. After the
measurement, the half-bearing is removed by the handling device.

• To ensure measuring accuracy throughout the process, the measuring
device is automatically calibrated at regular intervals using a setting
master.

• The entire process is computer-controlled with user-definable force
parameters. Measuring records and databases can be created.

Measuring device for checking diameters on large rings
• Large rings (e.g. bearing rings) are subject to the most stringent
tolerances. Checking these requires flexible measuring equipment that
can cover a range of inner and outer diameters.
• The measuring device for large rings means that inner and outer
diameters can be measured with just one device.

• It can measure inner diameters from 63.5 mm up to maximum 825 mm
and outer diameters from 76.2 mm up to maximum 831 mm.

For more information, please visit our website: www.mahr.com

Engineered Solutions | Customer-Specific Measuring Technology 623