Simple, Inexpensive 3D Printed Grasping Device Makes Household Robotics More Plausible

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The old adage, “If you want something done right, you have to do it yourself” has for the most part, until very recently, applied to robotics designed to undertake basic tasks in human-centered environments. In particular, substituting robots grip1for humans when it’s time to wash the dishes, dust the knick knacks, sweep and mop the floors, and so forth, has proven surprisingly challenging.

Never mind that your high-tech housekeeper doesn’t look like everybody’s favorite, apron-sporting, wise-cracking, part-nanny, part-maid, Alice, from the popular, ‘70s sit-com, “The Brady Bunch,” or the pie-making, everyone’s granny, Aunt Bea who fussed over Andy and Opie. It’s unlikely that we’ll be seeing convincingly anthropomorphic robots developed in the near future, at least not for taking on basic tasks in the household, the school cafeteria, the nursing unit, or in comparable settings. In fact, it’s the simplicity of those tasks that makes the expense of going in that direction–the human-looking and -seeming robot–unnecessarily extravagant. Further, without homes that are more robot-friendly, it is difficult to operate a time- and energy-saving device like a basic automated “helper.”

But there’s another way of solving the problem, a simple one conceived of by two students in the Human Centered Robotics Lab at the University of Washington in Seattle. Zhe Xu and Maya Cakmak have created a simple and inexpensive 3D-printed adapter that allows a robot to grasp basic household tools. Robotics meets Occam’s Razor: The simplest solution, the 3D printed adapter Xu and Cakmak have dubbed, “Griple,” seems to be the ideal one.grip

Robots like the Baxter from Rethink Robotics and the PR2 from Clearpath Robotics have the capacity to take on our unwanted, menial labor and now, this $10 device allows them to take on the three basic requirements of simple tool use: grasping, applying, and placing. With the Griple on task, the robot can be programmed (or “trained,” as Baxter’s makers parse it) to follow through on chores like dusting, mopping, folding laundry, and so on.

The UW researchers ran tests with the Griple using a PR2 robot they called “Rosie2.” The device performed basic household chores without the use of the Griple with 86% efficiency. With the Griple, Rosie2 was a stellar employee with an efficiency level topping 99%, sort of the difference between hiring someone to clean your house and having your children do it.

In its current incarnation, the Griple remains in place on a given tool once it’s installed. However, both the average cleaning implement and the Griple are so inexpensive to purchase and produce (respectively), that this really isn’t a major issue.

While seemingly rather basic, the Griple really is pretty ingenious. Recently, Xu and Cakmak unabashedly presented their invention in the more sophisticated nomenclature of science and academics: “Enhanced Robotic Cleaning With a Low-Cost Tool Attachment” at the 2014 IEEE International Conference on Intelligent Robots and Systems (IROS) in Chicago. With the help of the Griple, Rosie2 can join them in toasting their success.  Is this the future of robotics?  Will we all soon have robotic maids in our homes?  Discuss this story in the 3D printed Griple forum thread on 3DPB.com.

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[Source: IEEE]

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