Dec 13, 2018 Leave a message

How to reduce the load on the motor

How to reduce the load on the motor

1. Relax the tightness of the belt

The belt is too tight, which increases the motor shaft and the friction of the wheel. The proper tightness helps the motor to run smoothly and with the accuracy of positioning.

2. Reduce the load weight of the motor

The glass of the print platform, the base of the print station (some people use metal), is the main source of Y-axis load weight. Lighter weight can be achieved by using thinner glass or by replacing the original glass with a fiberglass board. Under the premise of sufficient strength, the bottom of the printing table should be hollowed out as much as possible, or the lighter material can be used to reduce the load on the Y-axis motor.

The maximum weight load on the X-axis comes from the extruder motor. If the extrusion mechanism is changed to the far-feed Bowden type, the load on the X-axis motor can be greatly reduced.

3. Reduce the printing speed

When the car is slower, the power needed is reduced. This does not need to be explained again~~

4. Reduce the acceleration

This is actually the most effective and affordable solution that can be printed quickly and steadily.

Newton's motion theorem mentions F (force) = M (mass) xa (acceleration)

As the acceleration decreases, the required force is also proportionally reduced. Although the quality reduction is also helpful, the proportion of mass reduction is limited. Decreasing the acceleration can improve the out-of-step, but it does not mean that the "highest print speed" will be reduced. It only takes time to accelerate to the highest speed. Therefore, reducing the acceleration, but not reducing the printing speed, can still maintain a relatively fast printing speed. Just sacrifice some printing time, but don't lose your step, kill two birds!

Acceleration settings, it is recommended to modify the parameters in the Marlin firmware directly through the LCD, and then stored in the EEPROM. You can also directly modify Marlin's Configuration.h configuration file and re-burn it to the 2560 control board. Otherwise, it can be set in the slice software.

Marlin's acceleration settings are divided into two parts: Default and Max. Default is the acceleration used when Gcode executes the "moving command" such as G0, G1, etc. The default value is 3000mm/s2. When Gcode executes M204 and tries to modify the Default acceleration, the set value cannot exceed the value of Max. Acceleration. Directly set the Max acceleration to 3000mm/s2 or less to effectively prevent the M204 in Gcode from increasing the acceleration.

The Max. Acceleration can be modified by selecting "Control->Motion->Amaxx" and "Control->Motion->Amaxy" in the LCD panel. After modifying it, remember to use "Control->Storememory" to store the settings in the EEPROM. You don't have to re-adjust it again after the next boot.


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