Which is better, ball track or roller track? Let's analyze in detail below.

Whether the hard rail is good or not, the accuracy of the machine tool is not much related to the guide rail, mainly the accuracy of the servo drive motor and screw bearing. The guide rail mainly plays a guiding and load-bearing role.

Line rail is a type of rolling friction, point or line contact, with small contact surfaces and low friction. It is mainly used in high-speed machining and the mold industry. For mechanical machining with small cutting volume and fast cutting speed.

Hard rail is a kind of sliding friction, which belongs to surface contact. It has large contact surface, large friction force, and slow speed of rapid movement. When machining cast iron steel castings, it has large cutting force, large cutting force, and severe vibration. At this time, the benefits of hard rail appear. Because the hard rail surface contacts with the surface, it has large contact surface, and good shock absorption, which can ensure both processing efficiency and processing accuracy.

The spindle form corresponding to the line rail machine tool is generally an electric spindle, with small spindle torque and lack of force. The moving components of the line rail machine tool are all embedded on the slider, and the rolling inside the slider is a ball or roller. When the cutting force is high, it is easy to cause resonance, harsh sound, and vibration is one of the reasons that cause significant damage to the accuracy of the machine tool.

In short, when processing casting workpieces, it is better to use hard rails, especially when rough and fine machining are done together. If only precision machining is done, the good track and fast movement of the track can save non processing time during mass processing.