The plate-tube integrated laser cutting machine can not only reduce the floor space, but also reduce the investment cost. It is an ideal choice for users with dual cutting requirements of plates and pipes. Every manufacturer is boasting about the good performance of its products, but it is difficult for users to judge whether the quality of a plate-tube integrated laser cutting machine is excellent or not without knowing the industry, so they are faced with how to distinguish its performance.

1. See cutting accuracy

The plate-tube integrated laser cutting machine has the advantages of high cutting accuracy, high speed, no limitation of cutting pattern, low processing cost, and is gradually replacing the traditional metal cutting process equipment. At present, the application range of the plate-tube integrated laser cutting machine is becoming wider and wider, and the cutting accuracy of the plate-tube integrated laser cutting machine is related to the processing technology, so it is also one of the problems that buyers pay attention to.

2. See cutting speed and cutting effect

Laser cutting has no burr, wrinkle and high accuracy. For many mechanical and electrical manufacturing industries, because the cutting system of modern fiber laser cutting machine controlled by computer program can easily cut workpieces of different shapes and sizes, it is often preferred over punching and molding processes; Although the processing speed of the plate-tube integrated laser cutting machine is still slower than that of the die punch, it has no mold consumption, no need to repair the mold, and it also saves the time to replace the mold, thus saving processing costs and reducing production costs.

3. See cutting stability

The optical fiber laser cutting machine partially realizes high-precision gear and rack transmission, so as to achieve the same image and mirror image stable transmission between the master and slave cutting torches. The longitudinal guide rail is refined from high-precision special elevator guide rail. The precision processed sliding guide rail is fastened on the concrete or steel frame foundation with support, and is equipped with adjusting bolts for installation and adjustment. The longitudinal drive system is installed in the longitudinal end frame, and the low position design makes the transmission more reasonable and stable.

Everyone has long heard about the flexibility and efficiency of laser cutting machine processing. Now, the conventional round hole cutting is also started to be realized by optical fiber laser cutting machine. The finished cutting product is not only smooth in section, but also flexible in changing the processing aperture to meet the diversified needs of the factory.

However, using laser cutting machine to process round holes also requires some skills. Pay attention to the following items to make the processing process smoother and the accuracy of the cut circle higher.

1. The blowing pressure is not suitable

During the blowing process, when the pressure is too low, the edge scraping and carbonization will occur, and the hole is easy to burst when the pressure is too high. Therefore, this requires the process proofing engineer and the machine to cooperate perfectly, and select the appropriate air pressure based on experience, so as to make the cut round hole fuller.

2. The round hole is too small

The scheme of laser cutting machine to cut round holes is that the ratio of round holes is 1:1, that is, the ratio of hole diameter to plate thickness is 1:1, that is, the larger the hole diameter, the easier it is to cut high-quality round holes.

Otherwise, when the energy of the fiber laser cutting machine is insufficient, it is easy to cut small holes with residual breakpoints and round holes.

3. Servo motor parameters are incorrect

Sometimes the round hole may appear elliptical or irregular, which is related to the X  Y axis motion mismatch, and the direct cause of the X  Y axis motion mismatch is the improper adjustment of servo motor parameters. Therefore, the quality of cutting round holes also has certain requirements for servo motors.

4. Precision error of guide rail and lead screw

If the parameter error of servo motor affects the cutting quality, the accuracy error of guide rail and lead screw will also directly lead to the round hole accuracy not meeting the expectation.

Why should customers emphasize the need to configure imported servo motors when ordering laser cutting machines? Because servo motor is a very important component of laser cutting machine, its quality also directly determines the stability of equipment use, especially in the deformation of processing contour, which can be said to be very important. In addition to its own stability, there are many external factors that directly affect the normal operation of the servo motor.

For the laser cutting machine, whether it is flat plate cutting or pipe cutting, if the equipment wants to process according to the established figure, the key lies in the dynamic response of each axis involved in the processing and the coordination between them. If the overall response of each axis is too slow in the process of machining, or if there is a small deviation of one axis and a large deviation of the other axis in some positions, the problem of machining contour deformation will occur. There are many reasons for this discrepancy, including mechanical, external force, servo response, control system and other factors, or the superposition of multiple factors. Therefore, the key to solve such problems lies in the better dynamic response of each axis and the coordination between them, so that they can carry out processing operations in strict accordance with the established goals. As an intermediate executive mechanism to undertake the mechanical and control system, the servo motor can compensate, optimize and coordinate the actions of various systems to a certain extent, so as to achieve a more perfect control purpose.

In addition to the stability of the servo motor itself, the external factors affecting its normal operation include:

1、 Mechanical factors

Mechanical problems are relatively common, mainly reflected in design, transmission mode, installation, material, mechanical wear, etc.

2、 Mechanical resonance

The effect of mechanical resonance on servo is that it can not continue to improve the responsiveness of servo motor, so that the whole equipment operates in a relatively low response state. This kind of problem is common in synchronous belt drive machinery, in addition, this kind of problem sometimes occurs in long-distance ball screw. The main reason is that the rigidity of the synchronous belt is low, the resonance frequency is low, the inertia of the long-distance lead screw is large, and there are many deformation cases, especially when the motor capacity is small, it is easy to start vibration. At the same time, the assembly process and material quality during installation will also affect the mechanical resonance.

3、 Mechanical dithering

Mechanical vibration is also the natural frequency of machinery in essence. It usually occurs in single-end fixed suspension structure, especially in the acceleration and deceleration stage. Low-frequency jitter will show a large wavy shape in the workpiece, and high-frequency jitter will have a sawtooth shape.

4、 Mechanical internal stress, external force and other factors

Due to differences in mechanical materials and installation, the mechanical internal stress and static friction of each transmission shaft on the equipment may be inconsistent. If the internal stress or static friction of one of the two axes involved in the trajectory interpolation control in the equipment is greater, the servo torque will be consumed to a certain extent, resulting in slower acceleration of this axis, resulting in deformation of the processing contour. Generally, we can observe the internal stress of the transmission shaft through the waveform curve generated by the feedback of the servo driver.

The external force acting on the shaft is similar. The general plate cutting machine is non-contact between the axes and the workpiece, and may be subject to limited external forces. However, for some pipe cutting machines, the feeding shaft will participate in the interpolation during cutting, while the other shaft is generally non-contact. At this time, due to the influence of the clamp, the pipe will produce a reverse force on the pipe feeding shaft, so that the force of the two axes involved in the interpolation control is not consistent, and the cutting effect will certainly be affected.

5、 CNC system factors

In some cases, the debugging effect of the servo is not obvious. At this time, it may be necessary to intervene in the adjustment of the control system. The linear speed of laser cutting machine is usually relatively constant, and it is the same speed in straight line and curve. This is not a big problem in linear motion, but in the processing of curves, especially small arcs, the contour may be deformed due to excessive acceleration.