High-performance machining center layout features

High-performance machining center layout features
    
Mazak's Joe Kraemer, Ph.D., pioneered high-performance processing center in 1995. He focused on exaggerating the machining of the central cutting rate and the accuracy of processing parts at the same time progress, it is more than high-speed cutting machine tools, more comprehensive response to the contemporary manufacturing skills today's growth direction.

   

   The difference between a high-performance machining center and a high-speed machining center is that it has a high-speed linear guide, a high-power spindle motor, a precision spindle bearing, a ball screw, an efficient servo drive motor, and a progressive Of the CNC system. So that the processing center in the high efficiency of the processing of high-precision parts, greatly improve the market competitiveness.

   

   Straight track

   

   Processing the central axis of the activities of the rate and accuracy, to achieve high-speed cutting tension. In the definition of high-performance machining center, Dr. Joe Kraemer pointed out that under the condition that the spindle speed of the machine tool and the tool system are stable and guaranteed to meet the precision of the machined parts, if the axial activities can not reach f = 7.62-11.43m / min Rate, it can not be called high-performance processing center. But to reach the high rate of feed rate, to take the ordinary machine square rail is far from the realization. Be sure to use a linear guide rail. Tests have confirmed that the linear motion guide rail friction coefficient is only 1/20 of the ordinary square guide. As the linear guide rail between the roller and the guide area is far smaller than the square rail, so that the power loss is also low for the square rail 1/20, and can keep the long time between the little wear and tear, the progress of the track The The precision linear guide rails have a linear guide rail with a quenched hardness of HRC58-62 which is ground by a precision rail grinding machine, unlike at least one V-shaped rail as an ordinary square guide. As the layout of the two linear guide is rough, so easy to process, installation, measurement and can choose the appropriate roller diameter.

   

   When the machine starts to move along the straight line, the linear guide rails only need 166 kg force to conquer the static friction, to be 69.2kg force to force the friction. And the square guide method to be 346kg force to conquer static friction, 103.8kg force to force the friction. Thus, the use of linear guide rails can make the machine's maximum feed rate of 63.5m / min, where 38.1m / min feed rate used most. So that the acceleration can be in the range of 0.6-1.0g. The linear motion guide of the force mouth has high rigidity, and there is no gap between the laboratories, so there is little vibration, can be processed out of low surface roughness of the appearance of parts, extending the life of the tool.