Services & Special Projects

We offer a wide variety of services that complement our product offerings. In the unlikely instance we don’t have a solution for you, we are confident we can point you in the right direction.

Slone Gear - SerVU - consulting and training on spline and master gear techniques

Consulting, Training, Sourcing, Contract Inspection

Slone Gear ProVU - Precision Gear Measurement

Custom or special projects requiring a high level of engineering and production expertise

Slone Gear AutoVU - Precision Master Gear, Spline Gage, and Roll Tester Measurement

Need to automate one of our systems or one of your existing systems? We have automation partners ready to tackle the toughest challenges.

We offer a wide variety of services that complement our product offerings, including advanced gear and spline measurement solutions like spline gage/gauge and master gears. In the unlikely instance we don’t have a solution for you, we are confident we can point you in the right direction with our extensive knowledge of internal and external master gears, roll testers, and more.

Consulting, training, and sourcing services that enhance your use of spline ring gage and roll tester equipment for contract inspection.

Custom engineering solutions for your unique spline gage and master gear measurement challenges.

Automate gear inspection with solutions designed for roll testers, spline gages, and master gears.

ProVU Examples

Bevel Gear Simulation

A large corporation uses high volume powder metal bevel gears. The dies which are used during the powder metal manufacturing process are expensive and time consuming to produce. It is very advantageous, from a timing and a cost reduction standpoint, if design iterations of the dies can be reduced or even eliminated. The idea is to produce 3D models of the straight bevel gears and simulate the meshing of the gears in order to predict the tooth flank contact pattern of the gear set. Due to a strategic collaboration with a partner, we have obtained a software package which can perform the simulation of a virtual gear set.

In order to validate the gear set simulation, we used a straight bevel master gear set, akin to employing a master gear for precise calibration, which had been produced for the corporation. The contact pattern for the master set was confirmed by running the set on a bevel gear tester, utilizing techniques similar to those used in roll testing, at the specified mounting distances. The contact pattern obtained using the simulation software was compared to the observed contact pattern on the master gears. The contact patterns correlated. A final validation was achieved by inspecting the master bevel gear and master pinion using the 3D models for the tooth flank definitions. This meticulous approach mirrors the precision achieved through composite testing, ensuring very minimal deviations.

The end result of this process is that the 3D models of both the pinion and the gear can now be employed by the corporation to create tool die designs which should produce gears which replicate the tooth form of the master gears. This means that theoretically, no design iterations will be required for the tools. The bevel pinions and bevel gears produced using the tools should have excellent tooth contact patterns, akin to the precision expected from utilizing a spline ring gauge or a spline plug gauge in quality control. The design cycle for tool design and production has been significantly reduced, demonstrating the efficiency akin to employing a concentricity gauge for ensuring the utmost accuracy in gear manufacturing.

High Speed, High Torque Spline Test Rig

Gas turbine engines are used in aircraft, industrial, and marine applications. These engines are designed to precision standards, and the engine hardware requires tight manufacturing tolerances. Validation of the units is performed in test cells specifically designed for the purpose. The cost per test hour is extremely expensive. The NAVY and Rolls-Royce Aerospace contracted Slone Gear to provide a test rig specifically intended for the evaluation of involute spline couplings. The idea was to be able to perform accelerated testing while maintaining close control over spline coupling alignment and loading, employing tools like the spline gauge/gauge for precise measurements. The cost of operating this spline test rig is far less than the cost of testing an actual gas turbine engine. In addition, the evaluation of the spline design can be accelerated so that the time required to validate a spline design is significantly reduced.

A unique spline test rig, based on a four square concept, was designed and manufactured by Slone Gear in conjunction with Schoolcraft Power Train. Essentially, spline test specimens, replicating the geometry of spline couplings in an engine, are produced and tested under high speed conditions at up to 10,000 RPM. Loading is achieved through the use of a hydraulic torque applier with “on the fly” adjustment capability, similar to the precision achieved with master gears in roll testing scenarios. All of this means that mission profiles can be accurately simulated while accruing substantial savings of both time and dollars, highlighting the effectiveness of techniques such as DFRT (Dynamic Feedback Roll Testing) in ensuring optimal performance.

Slone Gear - Spline Gage Testing and Master Gears

Measuring Gears at the Speed of Light®

Join us as we pivot the industry from probes to lasers, from labs to the shop floor, and from hours to seconds!

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