Regardless of shape or size, the Schunk Pronto prism jaws allow different geometries to be clamped fast, flexibly, and safely. The jaw quick-change system is unique in its kind. It can be retrofitted on any lathe chuck (no matter what manufacturer or design). It allows high flexibility and short set-up times of just 15 seconds for a complete set of jaws. The operator can mill the customised required workpiece contour into the soft Schunk Pronto prism jaws himself. Alternatively, configured jaws, based on the workpiece data of the individual prism jaws can be machined and delivered by Schunk on short notice. For raw parts clamping, the prism jaws are additionally equipped with Schunk claw inserts.
Fast and precise jaw change
In combination with the Schunk Pronto support jaws, Schunk Pronto prism jaws can be used very flexibly. For a fast jaw change, all that is needed is loosen the locking is an Allen key, to remove the clamping insert from the prism jaw, and to replace it by another clamping insert. During jaw change an incorrect positioning on the serration can be prevented. Excellent repeat accuracy of 0.02 mm allows for less time reboring inserts and turned or milled clamping inserts can be used again. In the locked condition, a six-sided form-fit locking ensures maximum processstability and allows a high force and torque transmission.
Modular design for maximum efficiency
Schunk Pronto supporting jaws are available in two mounting variants: fine-serrated (1/16’’ x 90° or 1,5 mm x 60°) for conventional lathe chucks,or with straight or angled serration for implementing the Pronto system on modern quick-change chucks. The supporting jaws can be combined with different quick-change inserts, such as soft jaws, claw jaws, or prism jaws. By using the quick-change inserts, the clamping insert can be enlarged with soft jaws by up to 55 mm, or with claw jaws up to 45 without having to change the base jaw’s position. In turn, prism jaws allow maximum flexibility of the workpiece geometry. With the excel-based Pronto configuration tool, which is available for free, the selection and positioning of the supporting and changing inserts are quick and easy to do. The tool automatically determines the required changing inserts and correct position of the supporting jaws after input of the chuck type and the workpiece diameter.
The jaw quick-change system can be retrofitted onto every 3-jaw chuck for the sizes 200, 250/260, 315, and various 2-, 4- and 6-jaw chucks. The modular design allows an individual and economical combination of individual components. Every changing insert is compatible with every supporting jaw. On option, a setup cart is available, which ensures clean storing and fast access to claw inserts, soft changing inserts,supporting jaws with assembled screws and T-nuts, adjustment aids. Storage possibility in the machine is available: every component can be carried on a tray and a quick lock for assembly can be directly located in the machine.
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