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Spindles, Piston Rods, Rings -
Eddy Current Crack Testing Systems
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Spindles
Automatic
crack and structure test of
spindles with
the 2-channel eddydector®
and the eddyliner®
P4
After hardening and grinding, the parts enter
the test systems from the left on a roller
conveyor. |
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Hardness |
Crack
Specification |
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hardening depth at 4
positions |
depth |
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0.050mm |
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tempering of basic
material |
width |
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0.075mm |
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correct alloying |
length |
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3.75mm |
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surface cracks |
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Orientation Longitudinal and
Circumferential
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cycle time |
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525sec. |
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Cycle Rate |
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up to 20 parts/min |
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Parts Diameter |
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8 - 30mm |
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Length of parts |
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250 - 650mm |
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Depth |
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50mm |
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Length |
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5mm |
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Width |
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75mm |
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Direction |
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longitudinal and
transverse |
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Piston Rods
Automatic Crack detection of
piston rods by means of
eddydector®
and eddyscan®
H2/25
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Crack Test system shown
at left
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Drawing shows part
subject to crack and flaw testing
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Entire cylindrical
ground surface area is scanned
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Very compact test
system located on a steel frame
containing both steel cabinets for crack
detection electronics and control
elements (PLC) as well as electrical
system. |
Careful and precise
transport of parts by means of hardened
and synchronously running V-rollers.
Edge blanking done by reliable fork-type
light barriers which are easily
adjustable and oriented via a master
piston rod. |
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View of the drive
unit and timing belt (protective cover
removed). |
Diameter adjustments
are carried out by setting the rotating
head, incl. crack and measurement scale,
to the correct height and changing probe
disk. |
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The piston rod is
directed to the probe disk (without
contact). protective cover for feed
system removed. |
Rotating head in
maintenance position bypass operation
possible. |
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Vanes guide not o.k.
pats into a lockable rejected parts
tray. Protective cover of
ejector is open. Surveillance stop
circuit for safe operation. |
View of the ejector
drive. In order to protect the plastic
ejectors, a shearing pin limits the
torque being transmitted by the
universal joint. |
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Test system with switch cabinet, operating
elements, crack detection instrument and printer
to print test results. The mechanical module can
be seen on the right side.
Cycle time: 6 seconds per part
(600 parts per hour) |
Bearing Rings
Automatic
Crack Detection of Bearing Rings on Inner
Diameter
Using Single Channel eddydector®
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Crack Test system shown
at left
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Photo shows bearing
inner-ring tested for cracks at
production-line speeds
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System can test inner or
outer races
Example parts tested have bore diameter of 30mm
to 40mm.
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Crack Specifications |
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Orientation: |
Longitudinal |
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Depth: |
0.100mm |
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Width: |
0.050mm |
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Length: |
3.00mm |
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The bearing rings are fed on a conveyor belt to
the test system, individually clamped and
rotated. A probe scans the inner diameter for
cracks as per specification. Good parts are
returned to the conveyor belt, bad parts are
forwarded to a separate, locked chute |
Test part in receptacle position in test
station. |
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ibg NDT
systems has 25 years experience as a designer
and manufacturer of
state-of-the-art-non-destructive eddy current
testers, instruments, and systems for crack
detection and flaw detection |
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