Masterpiece in the world

  • Masterpiece in the world 2018/03/27 UP
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Masterpiece in the world #19
Precise spindle-tool centering with a floating holder - for high-speed and high-accuracy reamer machining on turning centers

  • Holder
  • Mass production

What matters in mass production, for example of automobile parts, are lead time and machining accuracy. To achieve higher accuracy in turning machining, misalignment between a spindle’s rotational axis and a tool’s center axis needs to be minimized.

In case of reamer machining, where strict tolerances are required, a floating holder is commonly used to compensate the misalignment. However, when there is a substantial misalignment to be compensated, a conventional floating holder prevents spindle acceleration and results in longer machining time.

However, MAPAL’s “Self-adjusting floating holder” brings high accuracy and high speed at the same time to reamer machining, with its unique tool adjusting function.

Conventional issues with a floating holder

A floating holder minimizes misalignment and reduces chatter vibration during turning machining to achieve required tolerance. A conventional floating holder absorbs misalignment up to 0.3 -0.5mm, but such a rigorous absorption behavior slows down the machining speed. On the other hand, when the misalignment is not adjusted enough by a floating holder, the uncompensated misalignment leads to a floating malfunction and worse machining accuracy.

A unique tool adjustment function to minimize misalignment and perform high-speed and high-accuracy reamer machining

“Self-adjusting floating holder” compensates misalignment by run-out adjustment function. It reduces the misalignment absorption by floating property and achieves high-speed reamer machining on turning centers.

“Self-adjusting floating holder” has an adjustment function to minimize tool run-out against machine spindle. It compensates tool run-out against spindle rotational axis and minimizes misalignment. With this product, misalignment absorption by a floating holder can be reduced to 0.05mm or less in radius, which assures high-speed reamer machining in better and more stable quality.

“Self-adjusting floating holder” is an optimized solution for the customers who pursue higher accuracy and shorter lead time in mass production of automobile parts.


Location:4-235-1, Sakae, Misato-shi, Saitama, 341-0043, Japan

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