Linear module and linear motor

Linear module and linear motor analysis - 2019 10 - 09 linear module is also called the linear module, linear slide unit, electric sliding table, the use of synchronous belt or ball screw drive the slider move automated transmission components, generally by the synchronous belt/ball screw, ball screw, linear guide, aluminum alloy profile brackets, coupling, motor, such as photoelectric switch components are assembled. Linear motor is also called the linear motor, linear motor, is a kind of mechanical energy convert electrical energy directly into linear motion, without any intermediate conversion mechanism of transmission. The difference between the linear module and linear motor: there are differences between linear module and linear motor, have contact again. They all belong to automatic transmission components, can realize linear motion, is to add various parts and components on the aluminum and plate, appearance looks similar. 1, the difference of the principle of linear movement while appearance is similar, but the principle of linear motion is not the same, linear motor is directly into mechanical energy to electrical energy, don't need to achieve linear motion, intermediaries and linear module is required with the help of a ball screw or synchronous belt will curve movement into linear motion. 2, the difference between precision than linear module of high precision linear motor, linear motor structure is simple, do not need to pass intermediate conversion mechanism and directly produce linear motion, motion inertia decreases, the dynamic response performance and positioning accuracy is greatly increased, precision linear motor can reach 0. 001 mm, and precision linear module is in commonly 0. 005 - 0. 04. 3, the speed difference between linear motor has a considerable advantage in speed. The linear motor speed of 300 m/min; Acceleration for 10 g. The speed of the ball screw is 120 m/min. The acceleration of 1. 5g。 From the velocity and acceleration of contrast linear motor has a considerable advantage, and linear motor speed after successfully solve the problem of heat will increase further, and 'rotating servo motor + ball screw in speed is limited by the more hard to improved. As for the dynamic response of linear motor for moving inertia and clearance and complexity of mechanism and holds an absolute advantage. In terms of speed control, linear motor response is faster, more wide range of speed regulation, and 1:10 000, can start instantly at the highest speed, and can quickly stop in running at a high speed. 4, the difference between the linear motor noise than the straight line module, the noise is small, because of the constraints of linear motor no centrifugal force, no mechanical contact, when motion is no friction and noise. Transmission parts did not wear that can greatly reduce the mechanical consumption and avoid the tow rope, wire rope, gear and belt pulley, caused by noise, so as to improve the overall efficiency. 5, the price is the difference between the linear motor in various aspects of performance are higher than the straight line module, therefore, is the price, the linear electric opportunity is more expensive, often several times. Above is the primary difference between linear module and linear motor, of course, in addition to these differences, the drive is equipped with is not the same, linear module USES the servo motor or stepper motor control, and device driven by linear motor is in itself. So how to choose both? According to the different features of linear electric and linear module, you can refer to the following options: general force is not big, a long journey, accuracy and higher customer, can choose to use linear motor; If the stress is bigger, short trip, customer for accuracy is relatively high, can choose a screw straight line module; If stress in general, a longer stroke, customers of accuracy is not high, can choose a synchronous belt line module.