Tri_Max_Gripper ( Conforming Robotic gripper )

This is a Robotic gripper by Chiprobot, originally published on Dec 1, 2013.


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Designed by Chiprobot ( 

This is a Robotic gripper that adjusts its grip to conform to the shape and form of the object picked up. 
UPDATE 2013/12/7 :- 
I was pretty gobsmaked by the interest this gripper has attracted 
and thanks to all for the kind messages. 
The Gripper has now been Featured on :-

Its printed with normal PLA (ie does not have to be flexi pla) 
Video in action :-  details of build can be found on my robot page here :- 
The drive mechanism is a simple standard servo modified with a linear actuator made from a "Glue stick" and linear feedback potentiometer. 
Details on servo conversion can be found here:- 


Simple print parts with normal PLA , the STL files are orientated for printing without support, you may need to slow the printer down whilst the last part of the support beams are being printed. 

Glue the three (red) support beams to the front (blue) body. 
Add wire (paper clip wire) between the eyelets of the three arms. 
I highly recommend you watch the above videos for details of actuator build. 
More build details can be seen here :- 
Fit in the linear Servo mechanism (i used a Pritt-stick as body and a lip gloss tube as the plunger (glue the plunger insert spigot inside the lip gloss tube) and glue the plunger crown (green) to the top of the lipgloss tube). It is done this way so that you can fine tune (sliding the crown up/down) to bring the gripper ends together to give max. grip 
The Servo is a standard HS-311 - when converted to a linear actuator it can push 3kg of force.



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60e01f065785145eb9cec924da7fa096?default=blank&size=40Danny Staple added this to the robot collection ago
67142dbc2e91017535d054feb51dfcfb?default=blank&size=40danrwill added this to the Functional Prints collection ago
E57aa99318ee441a6abf1e5915d4b230?default=blank&size=40Ingeniero Nasr added this to the To print collection ago
A177805cd0b4ca77e511c0d682a9c949?default=blank&size=40Mercier Pascal added this to the Robo collection ago
Mini  sushi chops trans more centeredSushi Desires added this to the Curios collection ago
Mini  sushi chops trans more centeredSushi Desires added this to the Mechanisms collection ago
40186e3951f4273de02225fbe100f411?default=blank&size=40burak Karagöl added this to the a collection ago
Mini 0306f4b8 4421 43fa a974 432fbcff5733Monika added this to the Smart Home collection ago
47613808155b5ebb7135b3801c217869?default=blank&size=40Penged added this to the Things to print collection ago
0bc5f9fe432de3a79d0f3496d2287ae5?default=blank&size=40Jeremy Clark added this to the Robots collection ago
9606c97675ca2694d288a7fa28324572?default=blank&size=40Antony AUFFRET added this to the trucs collection ago
E1997d372c40f80a4b00a912c7b73567?default=blank&size=40raymonduha added this to the robots collection ago
A3c378306573f417c0867e16c16f0992?default=blank&size=40Marcelo Carvalho added this to the Geek collection ago
Mini monimweb1Alain Ducros added this to the conforming robotic gripper collection ago
Mini screen shot 2013 07 15 at 6.49.36 pmErik de Bruijn published this design ago