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Toolholding


Precision Tooling Inc. (Hoffman Estates, IL). “We have taken the existing standard of Weldon flats for end mills and applied it to be compatible with our high-performance milling chucks. We came up with a new milling chuck product line called the Mega Perfect Grip milling chuck. A special keeper key is positioned into the Weldon flat of the end mill and together the key and cutter are inserted into the bore of the milling chuck with three axial grooves that accepts the keeper key. Once the cutter and key are inserted to the bottom, a 20° twist clockwise places the key against a hardened pin and into a stop groove of the milling chuck. Final tightening of the clamping nut closes the milling chuck, making it impossible for the cutter to pull out,” said Miller. The Mega Perfect Grip milling chucks combine the cutting performance of heavy-duty milling chucks with security against pullout of solid side lock tool holders. High-pressure and high-volume jet-through coolant is a standard feature. “To improve upon the ER standard, we developed the Mega ER solid nut which is a slot-free clamping nut without


ball bearings as a lower cost option to the standard Mega ER Nut. We’ve incorporated a friction-free surface treatment of the internal collet raceway to minimize collet distortion during clamping. The slot free nuts use our popular Mega Wrench that improves balance and tool holder symmetry. The result is that it allows us to make a replaceable ER collet nut for any- body with ER product and it’s available in ER16, ER20, ER25, and ER32 sizes,” said Miller.


When it comes to building tools to fit into the available ma- chining space, BIG Kaiser has developed an extension system that is designed to eliminate up to 40% of the weight of a very large boring tool assembly. “Larger diameter tool assemblies with long projections can be built up with both steel and aluminum components, providing an ideal length to weight ratio for most machines with automatic tool changers,” said Miller. It could make the difference between using the existing machine with the largest tool and travel available for a job, or having to make a capital investment to buy a larger machine. Another way to maximize the machine’s available work envelope is BIG Kai- ser’s Smart Damper for face mills that eliminates unwanted vibrations inherent due to excessive toolholder length and cutting conditions. The modular design provides versatility for gage lengths up to16" (406 mm) and is available for BIG-PLUS CAT 50 or BT50, and HSK- A100 metric face mills.


Leave the Tool in the Machine for Quick Change Command Tooling Systems (Ramsey, MN) has introduced its Varia VX Quick Change System that allows the machin- ist to replace cutting tools effortlessly, leaving the tool in the machine without risk to hands. The Varia VX utilizes three contact points to pull the Varia VX insert into position. A release mechanism ejects the insert without excessive force and makes single-handed operation possible, minimizing risk of injury. Tool change times take as little as 20 sec- onds with a single screw solution. The modular system allows tool preparation


64 ManufacturingEngineeringMedia.com | November 2014


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