3D Printed Servo Gripper

This mechanism converts the rotational motion of a servo motor into a clamping motion using a gear-driven four-bar linkage system. Designed for hobby robotics, pick & place tasks and students. 1. Gear SpecificationsStandard: Spur GearPressure Angle: 20°Module: 1.25MTeeth: 18TPitch Diameter: 22.5 mm 2. Theoretical Calculations A. The horizontal distance between the two gear centers B. Position Analysis (Four-Bar Linkage) C. Recommendation: Limit the servo rotation to the specific range of 120° to 35°. Why: To prevent mechanical interference between the components120°: Fully Open position.35°: Fully Closed (Grip) position. 3. Hardware Joint Assembly Method For simplicity, the joints use a Screw and Double-Nut (Jam Nut) setup. The nuts lock against each other to maintain clearance for movement. Alternative: Pins or Shoulder Screws. 4. Assembly & Design Videos<figure cla