Woodworking engraving machine "rotary servo motor + ball screw" PK linear motor

Below I briefly introduce the woodworking engraving machine "rotary servo motor + ball screw" PK linear motor, through the speed PK, accuracy PK, price PK, energy consumption PK for everyone to do a detailed introduction.



1. Speed ​​PK:

Linear motors have considerable advantages in terms of speed

Linear Motor

Speed: 300 m / min

Acceleration: 10g

Ball screw: 120 m / min

Acceleration: 1.5g



The linear motor has considerable advantages in comparison with the speed and acceleration, and the speed of the linear motor is further improved after successfully solving the heat problem, and the "rotary servo motor + ball screw" is limited in speed. More improvement, from the dynamic response, because of the inertia and clearance of the motion and the complexity of the mechanism, the linear motor also has the advantage. The speed control of the linear motor is fast, the speed range is wider, and the high-speed can be achieved at the moment of starting. It can be stopped quickly at high speed, and the speed range can reach 1:10000.



2. Precision PK:

In terms of accuracy, the linear motor has a simple reduction of the interpolation hysteresis due to the transmission mechanism. The positioning accuracy, the reproduction accuracy, and the accuracy are higher than the "rotary servo motor + ball screw" by the position detection feedback control, and it is easy to implement. Linear motor positioning accuracy can reach 0.1μm. "Rotary servo motor + ball screw" Highest2-5μm, requires CNC-servo motor - gapless coupling - thrust bearing - cooling system - high-precision rolling guide - nut seat - table closed loop Lightweight, the grating accuracy is high. If you want to achieve high stability, "rotary servo motor + ball screw" should adopt dual-axis drive, linear motor is a high-heating component, and it needs to adopt strong cooling measures. To achieve the same purpose, linear motor has to pay a higher price.



3. Price PK:

The price of linear motors is much higher in terms of price, which is why the linear motors are more widely used.



4. Energy consumption PK:

In terms of energy consumption, the linear motor is more than double the "rotary servo motor + ball screw" when providing the same torque. "Rotary servo motor + ball screw" is an energy-saving and booster transmission component, and the linear motor reliability is controlled. The influence of system stability has a great influence on the surrounding area. It is necessary to take effective magnetic isolation and protection measures to block the influence of strong magnetic field on the rolling guide and the adsorption of iron dust.