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“Thermal Shield” corrects thermal displacements

October 1, 2017

Yamazaki Mazak
Simultaneous 5axis machining center

 Yamazaki Mazak launched a simultaneous 5-axis machining center suitable for fine and precision machining such as die mold and medical-device components.

Structures such as bases, columns, rigidity and damping properties of drive systems such as ball screws and linear guides were improved.

Vibration is suppressed, and high machining surface quality is achieved even in machining with large acceleration and deceleration.  In addition, by adopting a completely symmetrical portal structure, the twisting of the airframe due to the temperature change is suppressed, and the stable accuracy is maintained.  The high speed spindle was equipped with the company’s fastest 45,000 rpm.

A direct drive motor was adopted for the tilt table.  The temperature-controlled coolant is circulated through the spindle and the shaft centers of ball screw to suppress the effect of heat generation by the motor and the ball screw.  It has succeeded in minimizing vibrations, thermal displacements, and back lush that degrade productivity and quality, succeeded in high speed and accuracy of each driving system.

In addition, all 5 axis were equipped with high accuracy scale feedbacks and a thermal-displacement control function called “Thermal Shield.”  Errors caused by thermal displacements are accurately corrected, and high accuracy machining is realized.

Source: SEISANZAI MARKETING October 2017

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