Published June 30, 2018 © GPL3+

Servo WormGear

Design and testing of WormGear Mechanism Fitted over servo motor.

BeginnerFull instructions provided4 hours4,364

Things used in this project

Hardware components

Arduino Uno

Servo Motor Towerpro SG-5010

M3 Allen Head Bolt

M4 Nut and Bolt(>10mm length)

Software apps and online services

Arduino IDE

Autodesk Fusion 360

Hand tools and fabrication machines

3D Printer (generic)

Magnetic ScrewDriver

Story

Idea is to test how WormGear mechanism work when fitted over servo motor.

I carried this test to check whether I will be able to control the flow of liquid passing from pipe added to the slot available in design.

Not much better result but thought I should share it and get some feedback.

After some attempts, I was able to design 3d parts in Fusion360 to be fitted on Servo motor with proper dimensions. Now the Process is simplified, just follow below simple steps to build your own.

Let's begin with the build,

Step 1: 3D Print parts and Assembly

Download STL files and 3d print all parts attached below in custom enclosure section.

After this start with assembly. The procedure is simple and straightforward as shown in below images.

1 / 4 •

Upper and lower parts are connected directly using the M3 bolt, don't forget to put linear gear inside.

Attach the circular gear on servo shaft. Now place the servo with gear inside the main body touching the linear gear. Use shaft and M4 nut bolt adjustment for proper fitting. Make sure linear gear is freely moving with a rotation of circular gear with sufficient force and not so tightly bound.

1 / 3 • Complete View

Click here to visualize in your browser.

Step 2: Arduino coding and Testing

Make the connection of servo motor to Arduino UNO as shown in circuit diagram.

I have used digital pin 9 to send a signal to the servo. If you used other then make necessary changes to code also.

Servo connection to Arduino uno

Download the Arduino code file from below code section and burn it to Arduino UNO.

NOTE: Please Connect also 12V power Adapter as external supply because alone USB of Arduino board won't be able to supply demanding current by the servo motor.

Here is the Working Demo :

Working Video

Thanks!!

Schematics

Code

Test code

#include <Servo.h> 
 
Servo myservo;  // create servo object to control a servo 
                // twelve servo objects can be created on most boards
 
int pos = 60,angle=25;    // variable to store the servo position 
 
void setup() 
{ 
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object 
} 
 
void loop() 
{ 
                                  
    //translate angular motion of servo to, forward and backward linear motion with wormgear
    myservo.write(pos+angle);              
    delay(10000);                      
                   
    myservo.write(pos-angle);            
    delay(10000);                      

}

Credits

Brijesh Singh

23 projects • 37 followers

Utilizing the spare time to Make and Share DIY Electronics and IoT projects with the online maker community.

Servo WormGear

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Step 1: 3D Print parts and Assembly

Step 2: Arduino coding and Testing

Custom parts and enclosures

Upper Section

Lower Section

circular gear

linear gear

Spacer

Schematics

Arduino and Servo Connection

Code

Test code

Credits

Brijesh Singh

Comments

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Servo WormGear

Servo WormGear

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Step 1: 3D Print parts and Assembly

Step 2: Arduino coding and Testing

Custom parts and enclosures

Upper Section

Lower Section

circular gear

linear gear

Spacer

Schematics

Arduino and Servo Connection

Code

Test code

Credits

Brijesh Singh

Comments

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