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The Importance of Servo Motor to Laser Cutting Machine

The servo motor is a very important component in laser cutting machine, and its quality determines the stability of the equipment, especially the deformation of the machining contour. Currently, the most used servo motor brands in laser cutting machines are Anchuan, Panasonic and Taida etc..

How does the servo motor affect the operation of the laser cutting machine?

For laser cutting machine, either plate cutting or pipe cutting, making the equipment shall be carried out in accordance with the established graphics processing, the key problem is how to participate in the processing of each axle of dynamic response and cooperate with each other. If the overall response of each axis is too slow in the process of processing or if there is a small axial deviation in some positions and a large deviation of the other axis, the deformation of machining contour will occur. However, there are many reasons for this discrepancy, such as mechanical, external force, servo responsiveness, control system, etc., or multifactorial influence. Therefore, the key to solving such problems is that each axis has better dynamic responsiveness, so that it can be more rigorously processed according to the established target. As an intermediate actuator of mechanical and control system, servo motor can compensate, optimize and coordinate the actions of each system to a certain extent to achieve a better control purpose.

Factors affecting the normal operation of servo motor:

1. Mechanical factors

Mechanical problems are relatively common, mainly embodied in design, transmission mode, installation, material, mechanical wear and so on.

2. Mechanical resonance

The most important effect of mechanical resonance on servo is that the servo motor can not continue to improve the responsiveness of the servo motor, so as to make the whole equipment run in a low response state. Such problems are common in synchronous belt driven machines, and other long distance ball screw bars have such cases. Synchronous belt is the main reason of low rigidity, low resonant frequency. At the same time the assembly process of the installation and the quality of the materials can also affect the mechanical resonance.

3. Mechanical dithering

Mechanical dithering is also the inherent frequency problem of machinery, which usually appears in the single-ended suspended beam structure, especially during the acceleration and deceleration phase. The low-frequency dithering will present a large wave shape in the addition of the workpiece, and the high-frequency dithering will have a serrated shape.

4. Mechanical internal stress, external forces and other factors

Due to the differences of mechanical material and installation, the mechanical internal stress and static friction force of each transmission shaft on the equipment may not be consistent.

In general, we can observe the internal stress of the transmission shaft through the generated waveform curve of the servo driver.

The external forces acting on the axis are similar. Ordinary plate cutting machines, the axes and workpieces are not in contact with each other, and may be limited by external forces. But some pipe cutting machine, the pipe shaft will participate in the cutting time interpolation, and the other axle is generally non-contact.

6. Numerical control system factors

In some cases, the debugging effect of the servo is not obvious, and the regulation of the control system may be involved. Laser cutting machine usually has a constant linear velocity, which is the same speed on the line and the curve. This is not a problem in linear motion, but in the curve, especially in small size circular arc, it may be possible to accelerate the deformation of the contour.

As a leader in the domestic laser cutting equipment industry, high energy laser has a profound experience of 16 years in the design and development of laser cutting machine. Its laser cutting machine is widely used in the stainless steel processing industry such as kitchen utensils, file cabinets, sanitary ware and cabinet, which has a large share of the market.  Since its establishment, the company always focuses on laser cutting technology research and  the development needs of customers. It is committed to provide the perfect metal processing solutions, and cost-effective laser cutting equipment. High-energy lasers are distributed across the country, serving thousands of customers and helping customers' quicken cost-recovering.



Fiber Laser Cutting Machine

GLDMA fiber cutting machine adopts famous IPG brand generator and original IPG laser cutting head from Germany. High precision belt module structure makes the cutting precision can reach as high as 0.01mm. Control system and independent control handle make operation much more convenient.
GLD3015F OPEN-TYPE DOUBLE-DRIVE FIBER LASER CUTTING MACHINE
Model
GLD3015F


Working Area
3000*1500mm
X-axis Travel
1500mm
Y-axis Travel
3000mm
Re-position Accuracy
±0.03mm
X/Y axis Max Speed
90m/ min
Power Rated Voltage/ Frequency
380V 50Hz
Laser Power
500-2000W
Power Requirements
380V/ 50Hz Three- Phase Four- Wire


GLD4015F OPEN-TYPE DOUBLE-DRIVE FIBER LASER CUTTING MACHINE
Model
GLD4015F


Working Area
4000*1500mm
X-axis Travel
1500mm
Y-axis Travel
4000mm
Re-position Accuracy
±0.03mm
Transfer Method
Precision Rack with Double Drive
X/Y axis Max Speed
90m/ min
Power Rated Voltage/ Frequency
380V 50Hz
Laser Power
500-2000W
Power Requirements
380V/ 50Hz Three- Phase Four- Wire

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