About Linear Guides Installation

Posted on Apr 2, 2019

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In the automatic production line, a linear guide is also called a linear slide. This is a bearing structure intended to offer free motion in one direction. In the consumer market, there are different models of linear guides. Motorized linear guides such as machine guide, roller tables, and some other dovetail slides are bearings moved by drive mechanisms.

About Linear Guide

In the automatic production line, a linear guide is also called a linear slide. This is a bearing structure intended to offer free motion in one direction. In the consumer market, there are different models of linear guides. Motorized linear guides such as machine guide, roller tables, and some other dovetail slides are bearings moved by drive mechanisms.

Non-motorized linear guide

Meanwhile, not all linear guides are motorized. Some non-motorized dovetail slides, ball bearing guides and roller slides offer low-friction linear movement for facilities that are powered by inertia.. All linear guides offer linear motion based on their bearing designs. The designs could be ball bearings, dovetail bearings, linear roller bearings, magnetic bearings, or fluid bearings.

Applications

Many guides are adopted to guide the load, to support external strengths, torques, and bending actions. Meanwhile, they also serve as anti-rotation devices. These linear guides offer high-precision guidance and permit for the load to be positioned perfectly in both accuracy and precision.

Conventionally, the load is installed on the front plate of the linear guide, and the mechanical scales and mounting options are compatible with other devices. Many of the linear motors are composed of linear guide/ slide and stator. As a result, the direct and indirect applications of linear guides are both great and wide in the industry.

Linear motor introduction

In the manufacturing and consumer industry, a linear motor by definition is an electric motor that has its stator and rotor unrolled, therefore, instead of the emission of a torque (i.e. rotation), the linear motor can emit a linear force along its length. It is important that, though the force is linear, while linear motors are not always nor necessarily to be straight. The development of linear electric motors can be dated back as far as the era of 1840s, in UK. To a more practical view point, there was a feasible linear induction motor which was described in the America later, and the purpose was for driving trains or lifts. Later on, a German engineer built a working model in the 1930s. Then in the late 1940s, one first full-size working model was designed and realized.

In about about a century-long period, the development of linear motor starts from a concept and then moved by many genius inventors and engineers in the history, and then later applied in the industry. The above mentioned versions are of the low acceleration linear motors. Compared with the BLDC counterparts, the BLDC motor is a synchronous motor which is driven by direct current electricity through an inverter that emits an alternating current electric current to motivate each phase of the motor through a closed loop controller. Meanwhile, the controller offers pulses of current to the motor windings that manage the torque and speed of the motor device. Generally speaking, the construction of the brushless motor system is basically identical or even similar to a permanent magnet synchronous motor, abbreviated as PMSM, while the former can be recognized as a switched reluctance motor.

The BLDC characteristics play important role in automation

If one compares brushless motors with the brushed motors, obviously the former are designed with higher power to weight ratio, higher speed, better electronic control, and lower maintenance costs. As a result, based on these advantages, the brushless direct current motors are widely applied to a lot of scientific applications. For example, in the convention, ordinary servo motors (both DC and AC) are commonly adopted in Robotic science. Recently, the AC servo motors are also widely used because the control is getting easier than before yet these motors can still handle a better torque force.

Meanwhile, the prices of servo motors are general higher, so standard sensors installed are optical sensors with selected resolution. With the introduction of the BLDC motor, now industrial robotic arms are able to move objects with heavier weights with great precision while the cost is not as much as other alternative solutions. Therefore, there are many robotic arms that are utilized in the industry are installed with the brushless DC motors, granting the best optimal final output of the end quality for the manufacturing planes..

BLDC motor & linear motors

As a result, BLDC motor can be applied to a wide variety of industrial fields and robotic arm is just one sector. Another popular usage is the linear motor. Linear motors are the device that can produce linear motion with no need of transmission systems.

Conventional transmission system includes many relevant components, such as rack & pinion, ball-and-lead screws, cams, etc. In the case of rotary motors, the above mentioned components are needed to compose a rotary motor.

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