3D Printed Servo Gripper
Print Profile(1)
Description
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 Specifications
Standard: Spur Gear
Pressure Angle: 20°
Module: 1.25M
Teeth: 18T
Pitch 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 components
- 120°: 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
Documentation (1)
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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