Our products for automatic transmissions

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Leak testing machines

Leak testing has been one of our core skills since the founding of the company: Starting in 1966 with the first leak test rig for water pumps, through the classical stroke-step transfer machines up to the current highly complex and highly flexible robotic systems. Automatic checking for leaks in the water cavities or oil cavities of an automatic transmission, is carried out in the leak test rigs. In doing so, the technology developed by JW FROEHLICH enables the desired test data to be quickly and precisely collected and compared with specifications. In the event of the stipulated limit values being exceeded, the leaks are localised on a neighbouring work station and can thus be repaired. Only once the test has been successfully repeated in the production line will the test part be fed back into the assembly process.

In most cases, our systems must be incorporated into a complete processing or assembly line, which requires a great deal of technological flexibility. We develop individual leak testing systems accordingly and create complex sealing elements tailored to customer requirements. Leak test panels developed by our company are installed in our leak test rigs and systems and optimally integrated into the test process.

Function test

The functional checking of automatic transmissions is normally carried out at the end of an assembly line. The End-of-Line test is a 100% check and is almost always carried out fully automatically due to the resultant very high number of parts to be tested. In doing so, ratios are checked when switching through the gears, the parking lock is checked and noise measurements are carried out along with hydraulic function checks, e.g. the oil pressure is measured. Transmissions can be checked without the oil tray or with the oil tray already fitted. In order to combine the advantages of both procedures, JW FROEHLICH has integrated the oil tray into an extremely stiff and vibration-insulated machine base. Efficient and highly-dynamic drive and power take-off technology guarantees a reduction in the moving masses when the transmission shafts are adapted. The user-friendliness of the EOL test rigs from JW FROEHLICH is also increased through their maintenance-free spindle bearings. The machines are aligned with forward-looking technologies for applications in the field of hybrid technology and e-mobility.