ultradex rotary table free sample

To the best of my knowledge, Ultradex was the AA Gage tradename for a very precise rotary indexer that used a pair of face gears to divide the circle into aliquot parts. Face-gear couplings have been made in two main flavors; the Hirth coupling uses straight-flank radial teeth, and the Gleason "Curvic" coupling uses radial teeth having convex / concave flanks.

My first experience with an Ultradex table was 40 years ago, and the table itself was decades old at the time. It had a 360-tooth pair of face gears, providing 1-degree +/- 1/2 arcsecond indexing increments. An angle generated by indexing the table to two different positions would therefore have a maximum error magnitude of 1 arcsecond. A later generation Ultradex offered single-position indexing within 1/4 arcsecond magnitude.

The original Hirth and Curvic couplings required raising the table itself off its base to de-couple the coupling. A non-rising variant was developed later, based on 3 face gears. Two of the face gears are concentric. One is fixed to the inside of the base, surrounding a second that is fixed to the underside of the platen. These two face gears do not contact each other.

The ULTRADEX MK II & III Indexing Table is designed for precision machining, inspection, calibration, test gear and other applications where absolute rotary positioning accuracies of 1/2 arc second band tolerance not accumulative (+/- 1/8 arc second) or better are required, with a repeatability accuracies to +/- 1/20 arc second.

The tables are manufactured for manual indexing applications; automatic tables are available (consult factory). They are supplied with a wide range of indexing positions varying from 180 to 1440. Accessories are supplied for sub-dividing the positioning increments, by both mechanical and electronic means, to give an almost infinite number or rotary positions.

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