High-PrecisionHydrochuck Overview Masayuki Doi
For years hydrochucks have been used in reaming and finish end milling due to stable runout, accuracy and good operability. Recently, as machine tools have seen an increased use in 5-axis machining centers, as well as multi-task and high-speed machines, tool holders have been in demand for a variety of operations. As machining applications continue to expand, hydrochucks have been developed with higher precision, miniaturization, higher speed and multi- functionalization, as well as part accessibility, in mind.
Hydrochucks have been developed with higher precision, miniaturization, higher speed and multi- functionalization, as well as part accessibility, in mind.
The HSK-E25, E32 series is available for fine finishing processes that require even more accurate precision. The Hydrochuck Ultra Precision has runout accuracy of 4xD within 1 μm at the tip. As in the case in microfabrication, with tool diameters between 0.1 mm and 0.05 mm, tools may break during tool changes. When handling a fragile tool, the hydrochuck can be attached and detached with a single wrench. Also, because it corresponds to shank diameter h6 tolerance, a range of tools can be used. Effect Of Suppressing Chatter Various factors affect chatter during processing, however, it may be difficult to determine the cause. In some cases, if the vibration is absorbed in the tooling, chatter may be felt. In one instance, chipping of the cutting edge occurred during ball end milling while using a shrink fit chuck, however, the chipping was eliminated by switching to a hydrochuck. In this case, the hydraulic chamber of the hydraulic chuck helped suppress the vibration.
Easy Operability
Due to good operability, hydrochucks are used in a variety of industries. Operation is simple and straightforward and not dependent on the skill of the worker. The hydraulic clamping screw is tightened with the included wrench and is complete when the screw reaches the bottom. With its ease of use, manufacturers looking for consistent, high-level product quality and stability from multiple operators, no matter their skill level, can benefit from the hydrochuck. Stable, Repeatable Runout Accuracy Our hydrochuck guarantees runout accuracy of 4xD within 3 μm or less at the tip. Furthermore, with repeatable high-accuracy operations, hydrochucks are ideal for precision processing, including reaming and finish-end milling.
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