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Rack & Pinion Robotic Gripper Jaw

Creation's quality: 4.8/5 (3 votes)
Evaluation of members on the printability, utility, level of detail, etc.

3D model description

Servo Controlled Robotic Gripper using rack & pinion drive for parallel jaw movement

This is a robotic gripper/jaw that uses a low cost Tower Pro MG996R servo.

As opposed to some grippers that use a lever action, this directly drives both jaws with a rack and pinion action.

It therefore has slightly more grip that traditional lever grippers and the jaw movement is totally parallel.

It could be easily modified to fit on to a robotic arm.

It requires:
1pcs Tower Pro MG 996R servo motor (approx price UK £5 / US $10)
M3x15mm Screws (4 pcs)
M3x10mm Screws (4 pcs)
M3 nuts (8 pcs)

To drive it, I used a servo motor test board and a USB phone charger (2.5A) But you can also use and arduino.

Servo tester board:

Oct 2018 - I've added an alternative JAW that has a wider opening of about 70mm, but obviously only closes to about 22mm. This was for a request to enable the jaw to operated a Rubik's cube of about 57mm Square. Please note that I haven't test this, so hopefully it'll print and function correctly.

  • 3D file format: STL
  • Publication date: 2019/01/30 at 10:04





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