Device in the picture:
diameter 215, suitable to clamp different gear typologies.
It's complete with base flange for connection on the machine spindle shaft. On such a flange it's fitted an elastic diaphragm  who, by means of a pusher connected and driven by back rotary cylinder, deforms the same.
On this diaphragm the clamping kits are fitted. These are working by the deformation force, eliminating inner slidings. When open (loading phase) the robot put the gear who is orientated meeting suitable pre-locators. After that (keeping on the insertion stroke) the workpiece stays on the mechanical stop. The back rotating cylinder, by means of the pusher going back, clamps the workpiece with rigid jaws fitted on the diaphragm base. It's possible to fit diaphragms with different jaws’ systems and replace only the same to machine workpieces different from each other, keeping the same base system.
A.m. system is suitable to be used to solve other gear clampings:
• loading (manual or automatic) and clamping of parts with very limited thickness. Eliminating the prelocators and centering by means of square jaws with taper edge.
• loading (manual or automatic) by means of rollers. Using pre-phasing taper wedges fitted on the front to orientate the workpiece when loading. Suitable rollers (jointly liable to the jaws) get the clamping being inside the tooth seat touching the
primitive diameter. (This system can be used on the chuck too).
• manual loading for limited quantity. To be used both a diaphragm or a chuck. The gear is loaded on a ring having rollers oriented in correspondence with the tooth position. The system is clamped by round jaws.
It's possible to remove and put the next gear to be machined making different couples of these rings; this while the gear previously clamped is on machining. This system allows to machine a wide range of gears on the same base clamping system.