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Factors, which affect the normal operation of laser cutting machine servo motor
by：Transon
2020-10-28
Factors, which affect the normal operation of laser cutting machine servo motor:
1. Mechanical factor
mechanical problems relatively common, mainly reflected in the design, the transmission way, installation, material, mechanical wear, etc.
2. Mechanical resonance
the influence of mechanical resonance problem of servo is unable to continue to improve the responsiveness of the servo motor, so that the overall equipment operation in response to low state. Such problems are common in the machinery with synchronous belt transmission, a long ball screw sometimes also have this kind of situation. Synchronous belt is the main reason of low rigidity, low resonant frequency, long screw's own inertia is larger, and more deformation conditions, especially in the case of small motor capacity selection is relatively easy to start up. Installed at the same time the assembly process of high and low, and the merits of the material will also affect the mechanical resonance.
3. Mechanical dithering
machinery jitter essence is the inherent frequency of problem, is usually more appeared in the single ended fixed cantilever beam structure, especially is particularly strong near the deceleration phase. Low frequency jitter in the machined part will present a big wavy shape, relatively high frequency jitter can have serrated form.
4. Mechanical stress and external force factors such as
due to differences in mechanical material and installation, equipment such as mechanical stress, the static friction force of the drive shaft may be inconsistent. If equipment involved in two axis trajectory interpolation control such as the static friction force of the internal stress of a shaft or in a larger, will to some extent, consume servo torque, cause the shaft speed is slow, resulting in machining contour deformation. Usually, we can through the feedback servo drives the generated waveform curve to observe the internal stress of the shaft.
the external force acting on the shaft is also more similar. Generally the plate cutting machine, is the contact between the shaft and artifacts, could be affected by external force is limited. But some pipe cutting machine, pipe axis will participate in cutting time interpolation, and another shaft is usually in contact. Tubing at this time due to the influence of the jig, can produce a reverse force of pipe axis, it involved in two axis interpolation control force, cutting effect will surely be affected.
5.
CNC system factors in some cases, servo debug the effect is not obvious, at this time may be involved in the adjustment of the control system. Laser cutting machine processing usually linear velocity is relatively constant, are at the same speed in a straight line and curve. It is not much problem in linear motion, but in curve, especially small size circular arc machining deformation may result due to accelerate spend big on the contour.
1. Mechanical factor
mechanical problems relatively common, mainly reflected in the design, the transmission way, installation, material, mechanical wear, etc.
2. Mechanical resonance
the influence of mechanical resonance problem of servo is unable to continue to improve the responsiveness of the servo motor, so that the overall equipment operation in response to low state. Such problems are common in the machinery with synchronous belt transmission, a long ball screw sometimes also have this kind of situation. Synchronous belt is the main reason of low rigidity, low resonant frequency, long screw's own inertia is larger, and more deformation conditions, especially in the case of small motor capacity selection is relatively easy to start up. Installed at the same time the assembly process of high and low, and the merits of the material will also affect the mechanical resonance.
3. Mechanical dithering
machinery jitter essence is the inherent frequency of problem, is usually more appeared in the single ended fixed cantilever beam structure, especially is particularly strong near the deceleration phase. Low frequency jitter in the machined part will present a big wavy shape, relatively high frequency jitter can have serrated form.
4. Mechanical stress and external force factors such as
due to differences in mechanical material and installation, equipment such as mechanical stress, the static friction force of the drive shaft may be inconsistent. If equipment involved in two axis trajectory interpolation control such as the static friction force of the internal stress of a shaft or in a larger, will to some extent, consume servo torque, cause the shaft speed is slow, resulting in machining contour deformation. Usually, we can through the feedback servo drives the generated waveform curve to observe the internal stress of the shaft.
the external force acting on the shaft is also more similar. Generally the plate cutting machine, is the contact between the shaft and artifacts, could be affected by external force is limited. But some pipe cutting machine, pipe axis will participate in cutting time interpolation, and another shaft is usually in contact. Tubing at this time due to the influence of the jig, can produce a reverse force of pipe axis, it involved in two axis interpolation control force, cutting effect will surely be affected.
5.
CNC system factors in some cases, servo debug the effect is not obvious, at this time may be involved in the adjustment of the control system. Laser cutting machine processing usually linear velocity is relatively constant, are at the same speed in a straight line and curve. It is not much problem in linear motion, but in curve, especially small size circular arc machining deformation may result due to accelerate spend big on the contour.
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