Using a magnetic chuck for milling gives many advantages: quick clamping of the piece, 5-sided machining in a single setup, high holding force, no maintenance.
On the other hand, in case of alloyed steel materials to be machined (typically molds) may occur a “glue” effect of the piece on the magnet, causing difficulties to remove it at the end of processing.
Usually the piece is detached from the magnet using “brute force”, with the risks of damage.
Furthermore, it is often necessary to insert it in a demagnetizer to remove halos of “residual magnetism.”
Tecnomagnete has solved these problems by applying its patented NUFLUX patented system in a milling chuck, with unique characteristics and performance: the model Quad Extra HN70.
This is a special high-density polar version, consisting of poles in size 70x70mm, each one able to generate a force of 350 daN.
Designed for machining alloyed materials (typically molds), HN chucks activate the NUFLUX system on every demagnetization cycle, to completely remove any residual magnetism from the workpiece.
The use of demagnetizers is no longer necessary.
HN chucks are also standard fitted with special “conical” polar extensions, designed to optimize the concentration of magnetic flux, doubling the specific force per cm2 of polar area in contact with the workpiece.
Standard supplied in combination with the control unit ST 210R, available with voltages from 200 to 480V, as well with a power controller on 8 levels for precise adjustment of the magnetic force accordingly to the characteristics of piece to be clamped.