>> “Optical” encoders have many positive features, but are relatively sensitive to vibrations, shocks and impacts as a result of their glass code discs. “Magnetic” encoders, such as the ATM 60, are sensors whose permanent magnetic elements scan a magnetic scale, and are considerably more robust due to their principle of operation. “This was decisive for us, because each machine we manufacture is equipped with numerous encoders”, says John Dunn, MD of Bronx Taylor/Wilson, a company active worldwide.

It is not possible to manufacture welded or seamless pipes to tight tolerances. If pipes need to be particularly straight it is necessary to process them further – typical requirements are a straightness of just 1 mm deviation per 1,500 mm or even 3,000 mm – to achieve these tolerances the pipe straightening machines from Bronx Taylor/ Wilson are used. Pipe diameters of between 15 mm and
600 mm can be processed on them with insertion speeds of up to 3.3 m/s. The pipes pass through several roller segments whose pressure straightens the pipe. The task of the ATM 60 is to regulate the height of the rollers and their angle relative to the pipe. The encoder’s multiturn property is achieved by using several reducing gears with magnets mounted upon them. This enables the absolute position of the rollers to be detected as the drive mechanism moving the rollers turns through multiple rotations.

The highly robust nature of the ATM 60 is ideal for machines that are installed worldwide – they prevent unnecessary complaints and service work. “They reliably withstand the impacts and vibrations, that go hand-in-hand with this process, for years – 24 hours a day, seven days a week, year in and year out”, says John Dunn. Moreover, the device also “speaks a variety of languages”: the communication protocols for Interbus, Profibus DP, CanOpen, DeviceNet and SSI allow the standardised transfer of digital data to the world’s most important fieldbus systems for factory automation.

The ATM 60 is the robust rotary measurement system for linear travels, angles, positions – and pipes.