difference between servo system and stepper system

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[jennycullen]

I'm very pleased for the excellence of service of the company~~

[thunderlaser.official]

it is worth  to spend time to watch the video, as you consider the customer's need

[Tuffenoughu]

This is a terrible explanation of the advantages of a servo vs stepper motor drives. The only thing it shows is dynamic load shifts in a raster sweep. This is not obvious to anyone that doesn't already understand this by watching a video of a raster etch.
For those who really want to understand the difference of servos vs steppers, it's not just about speed. The main advantage of a servo drive within a laser cutter is it's precision and dynamic load switches. IE. curves, sharp angle changes and accurate stops within things like tiny font's. A servo uses encoders to determine where it's relevant position is, essentially making it have a much higher resolution. A stepper which uses physical "steps" based on the number of polls inside the motor. Typically 50-100 steps. A servo is operates via a closed loop system, meaning it uses variable voltages as needed for movement. A stepper uses open loop full current at all time making it's movements via PWM inputs that have a finite point of stop and go. Servos are much more expensive due to having the need for encoders and higher tolerance mechanics. Servos are much quieter and can stop and go within an lower arc second range.
All in all, if you're going to go servo motor, it's sort of dumb to still use belts, as that is another bag of worms that also diminishes precision to a degree, especially on heavier more stable gantries. This is all depending on belt tensions and atmospheric conditions of course. This is why super expensive laser systems, such as KERN uses helical gear drives set on fixed splines that run the length of the X-Y-Z axis to prevent any lash or flexing. So in short, if you're running a small machine, belts and gear reduction stepper setups are perfectly fine and will hold very close. Servos are your weapon of choice is absolute precision is required for very intricate jobs. Hope this helps.

[sophiaswan]

It's obviously to learn the difference between servo system and stepper system form this short video

[bindasmeme]

can you please tell what is the processing method of image for engraving on mdf, wood and clear acrylic

[R凱這輪上車料]

I dont get it, u set it to different speed. So what's the difference? U set it to different speed?