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Thermal displacement compensating function installed in spindle

April 3, 2018

Mitsui Seiki Kogyo

Vertical machining center

[Vertex75III/75XIII]

Mitsui Seiki Kogyo minor-changed its vertical machining center (MC) Vertex75II/75XII and brought out the 75III/75XIII.

The thermal displacement compensation function is newly installed in the spindle.

Increase the number of temperature sensors and instantly detect the change amount and correct appropriately.  As a result, the amount of thermal displacement in the Z-axis direction was suppressed to about one third of the conventional amount.

The rigidity of beds and columns were also strengthened to increase machining accuracy.  In the 75XIII of 5 axis specifications, a large workpiece having a direct diameter 950 mm × height 650 mm at most can be processed.

It adopted an original “cube-on” structure in which three straight axes move on the column side.

Installation space is 2200 mm × depth 3440 mm. Of the products that can machining the same work size, realize the top class space saving.

In the spindle, a high-torque and high speed rotary type are prepared.  The high-torque type can be machining at 15,000 rpm, 25,000 rpm (standard specifications), and the high speed rotary type can be machining at 30,000 rpm.

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