Nowadays, many high-speed machining centers use linear motors to drive linear three-axes. The way high-speed machining centers use servo motors + rolling screws to drive linear three-axes has gradually decreased. At present, most high-speed machining centers have adopted linear The motor drives the linear three-axis, and the linear motor directly drives the linear three-axis, which directly eliminates the part that converts the rotary motion into the linear. The following editor will introduce what components the linear motor drive device of the high-speed machining center consists of.
Linear motor drive unit composition
The linear motor drive device is composed of a rolling guide, a position measuring system, and a linear motor. At this stage, domestic high-speed machining centers that use linear motors to drive linear three-axis are relatively few, but now high-speed machining centers in advanced foreign countries have slowly begun to use linear motors to drive linear three-axis, such as the high-speed The machining center adopts linear motors, and its feed speed is 2-3 times faster than the speed of traditional servo motor + rolling screw. Traditional servo motor + rolling screw drive linear three-axis feed speed is the highest At 48m/min, the feed speed of the linear three-axis drive using a linear motor is up to 120m/min. It can be seen that the feed speed of the traditional servo motor + rolling screw drive linear three axis is not as fast as that of the linear motor drive linear three axis.
Features of Linear Motor Driven Linear Three-axis
The linear three-axis driven by the linear motor has the characteristics of fast speed, excellent rigidity and high efficiency. Nowadays, the use of linear motors to drive linear three-axis is still not the mainstream, because the linear three-axis technology of linear motors is still mature enough, and there are many problems in linear motor technology, such as high price, high heat generation, and poor transmission stability. However, it is foreseeable in the future that linear three-axis technology driven by linear motors will gradually mature and the price will gradually decrease. Therefore, in the future, linear three-axis technology driven by linear motors will slowly be adopted by various cnc machine tools, and servo motors + Rolling screws will gradually decrease in cnc machine tools. The cruel market and the survival of the fittest understand the truth, and those who should withdraw from the stage will inevitably withdraw.
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