Clamping System Speeds Workpiece, Fixture Swap

BIG Kaiser's modular Unilock zero-point clamping system is available in a kit designed for all Haas 160-mm platter rotary tables.

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BIG Kaiser's modular Unilock zero-point clamping system is available in a kit designed for all Haas 160-mm platter rotary tables. Equipped with an ISM 160 (a single-chuck solution for the face of fourth- or fifth-axis rotary tables), the adapter rests between the chuck and the spindle face of the rotary indexer. The design replaces the existing T-slot platter so that the receiver goes directly onto the indexer spindle nose. Pneumatic clamping and unclamping of the chuck becomes a function of the machine tool controller or manual valves. It also includes a pre-plumbed air solution. According to the company, it only takes a few seconds to open a chuck and swap the workpiece or fixture, increasing productivity.

The system's zero-point clamping uses spring pressure to drive multiple clamping pins against a tapered clamping knob, and air pressure compresses the springs to release the clamping pins. To facilitate palletization, the clamping knob is attached to a base plate, fixture or directly onto a workpiece for quick clamping with repeatability of 0.0002" (0.005 mm) and retention force between 1,100 and 1,540 lbs.

Because the chuck's timing features are the same as the Unilock MCM 150 and MSM 170, existing pallets with timing features can be shared on this platform. A timing slot option enables a timing pin to match nonstandard pallet sizes or workpieces with a timing notch and can also be used as a lockout to prevent incorrect fixture loading.

Other kits available with the Unilock ISM 160 chuck include a generic adapter plate for direct mounting to other manufacturers' rotary faceplates, with T slots every 60 degrees. All other necessary pneumatics to plumb externally through the spindle of the indexer are sold separately and depend on indexer model.