Hydraulic Holders Reduce Downtime, Provide Accuracy
IMTS 2018: NT Tool offers the PHC-SA-C slim-bodied, hydraulic holder with jet-through coolant.
NT Tool offers the PHC-SA-C slim-bodied, hydraulic holder with jet-through coolant. Small notches along the sides of the holder bore enable streams of coolant to escape on each side of the cutting tool, while sealing it elsewhere.
The holder’s slim body design provides access to narrow workpieces, usually only accessible by shrink fit holders. Unlike shrink-fit holders, hydraulic holders can be chucked quickly with a hex wrench. This reduces downtime, eliminates the need for heat-shrink equipment and mitigates the risk of burns associated with shrink-fit toolholding.
The holder offers consistent 3-µm accuracy, according to the company. The dual clamping-point system provides stability and precision. The oil chamber around the chucking sleeve absorbs cutting vibrations, promoting smooth finishes on work surfaces, as well as more consistent cuts. An electromagnetic, rust-proof coating contributes to accuracy.
The hydraulic holder is available in HSK, CAT, BT and UTS shank styles. It is offered in both inch sizes (1/8" to 1" in diameter) and metric sizes (3 to 25 mm). Custom sizes can be accommodated as well.
Companies concerned about strict quality requirements regularly check toolholder tapers for wear or inaccuracy because these conditions can jeopardize the results of a critical operation. However, a shop can check tapers quickly and reliably with air gages. These devices can be used effectively without special operator training. For measuring taper in a production environment, few other methods can match the speed and performance of air, as multiple-circuit air jets can be placed in very small taper gages.
Angle heads can enable a three-axis machine tool to be more versatile. That said, this shop explains that there’s more to getting started using them than simply loading them into a machine’s spindle.
The combination of a digital boring head integrated with tool data software dramatically reduces the time required to set up a fine boring head. And still more IIOT-enabled advancements are just around the corner that will finally automate many boring operations.