The Simmons Wheel Set Measurement System (WSM-420) is a metrology machine that automatically inspects used railroad wheel sets to determine if the wheel set must be demounted, or if it can be re-profiled and returned to service. The machine measures wheel diameter and width, flange thickness and height, wheel rim thickness, deviation of measured wheel profile from standard profile, wheel back-to-back, depth of flat spots on wheel tread, and depth of grooved wheel tread. The WSM-420 calculates the amount of material that must be removed to restore the wheel profiles to the nominal profile, and determines if the wheel rim will be thick enough to return the wheel set to service after re-profiling.
Wheel sets are delivered to the WSM-420 via shop rails and once captured, the measuring arms are automatically positioned against each wheel tread. The wheel set is rotated while the wheel profiles are measured. The measurement results for both wheels will be displayed on local HMI and saved to the database. The control system determines if there is sufficient material remaining on the tread for further machining.
|Length||165.8 in.||4210 mm|
|Width (with Panel)||90.3 in.||2292 mm|
|Height||96.2 in.||2443 mm|
|Weight||10000 lbs.||4536 kg|
|Wheel Diameter||+/- 0.020 in.||+/- 0.5 mm|
|Flange Thickness||+/- 0.020 in.||+/- 0.5 mm|
|Flange Height||+/- 0.020 in.||+/- 0.5 mm|
|Rim Thickness||+/- 0.020 in.||+/- 0.5 mm|
|Wheel Back-To-Back||+/- 0.020 in.||+/- 0.5 mm|
|Depth of Flat Spots||+/- 0.020 in.||+/- 0.5 mm|
|Wheel Profile Deviation||+/- 0.020 in.||+/- 0.5 mm|
|Wheel Width||+/- 0.020 in.||+/- 0.5 mm|
*Applicable up to maximum ambient temperature change of +/- 18°F (+/-10°C).
|Electrical Power||22 kW|
|Compressed Air||15 scfm @ 80 psi|
Wheel Set Dimensions
|Maximum Wheel Diameter||42 in.||1067 mm|
|Minimum Wheel Diameter||28 in.||711 mm|
|Maximum Axle Length||90 in.||2286 mm|
|Maximum Weight||4000 lbs.||1820 kg|