Traditional robots, cobots, or a third option?
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Patti Perspective

Patti Perspective

Hi there,

 

Have you considered uncaging your robot?  In certain situations, it might be the perfect solution. Read to find out how we have made it work recently.

 

In the spotlight, meet Dave Haviland of our partner, Phimation!

Feature Article

Uncage Your Robots?

Patti Engineering Uncage Your Robots

You probably already know that traditional industrial robots can be used in places that are too dirty, too dangerous, or too dull for humans. Often seen in applications like lifting car frames, palletizing heavy items, or spraying hazardous chemicals, we are used to seeing these robots caged off from human operators.

 

You may also be familiar with collaborative robots, which have become more popular over the last decade. These are much smaller and come with built in safety features around their speed and may sense when they strike a person and safely stop before causing damage. They are designed so they can work directly side by side with people.

 

But have you considered a third option, a hybrid of the two? Uncaging your robot can be a safe option with the proper safety parameters and features in place. This can be a great option when you need a robot that can work in proximity to humans but also need the sturdier features of a traditional robot, such as speed, weight capacity, or heat tolerance. We have been working with clients that required just this solution.

 

By using appropriate safety scanners and other safety measures, you can control the robot to a slow speed and stop it depending on where an operator is in relation to the robot. This will allow you to get the speed of an industrial robot, but allows it to be accessible for service or inspection.

 

Safety Considerations

First, you need to have a qualified company conduct an RIA (Robotics Industrial Association) Risk Assessment, before planning any type of robot installation. Patti Engineering is qualified to do that risk assessment.

 

One of the most common risks is the speed of the robot in proximity to the human. To address the speed, a scanner and light curtains detect when a person is in range. When someone is close, the robot slows down to 125 millimeters per second, which is a safe speed. When the person is within the footprint of the robot, it stops. Therefore, the operator could go right up to the part, check it, and walk away. As soon as the person is out of range, the robot automatically starts back up.

 

In a recent particular application, the area where the robot was running was very tight. There is a lot of equipment in the area, and the guarding or caging around the robot was creating more potential pinch points between the robot and the guarding. So, removing the guarding was actually a safer option. Guarding is placed around the larger area to protect workers from part-related injuries. That guarding was integrated into the safety system.

 

Safety Equipment

A light curtain scanner provides the sensing for the system. It can be used with a Siemens controls and safety hardware, including a safety PLC. Everything can be easily connected thru Profinet.

 

Bonus: OEE

Incidentally, uncaged robots can also have a positive effect on the facility’s OEE (overall equipment effectiveness). Because the robot automatically restarts, you don’t have to worry about an operator forgetting to push a button, and no time is missed in getting right back to task.

 

If you are looking for a creative solution to a dirty, dull, or dangerous task in your facility, 

CONTACT US

Spotlight

Dave Haviland

Dave Haviland

While Dave Haviland has not been a direct employee of Patti Engineering, his mark on the company is indelible.  For about 10 years, he has been working with the Patti Engineering leadership team to help them develop the business strategy through his consulting practice, Phimation.


“Dave Haviland is a trusted advisor and a dear friend. I am always confident to use him as a sounding board,” said Sam Hoff, CEO of Patti Engineering. “We very much appreciate his valuable advice.”


Dave and Sam met after Dave realized through LinkedIn that they both are connected to the same fraternity.  Dave reached out, and as Sam is always open to new connections, they met soon after for lunch.  


“I’ve liked working with Sam and his leadership team on how Patti Engineering can drive Industry 4.0 by capitalizing on our strengths of strategic understanding and hands-on experience.  Many companies need help with Industry 4.0, and we know our customers’ success and our growth is going to come from successfully navigating the new opportunities,” says Haviland.


Dave grew up in Connecticut and attended Yale University, where he earned a degree in American Studies, although he says he was much more focused on creating three student organizations than he was on his assigned studies.  After graduating from Yale, Dave spent two years as a teacher before moving to Washington D.C.   Finally, he moved to Ann Arbor, Michigan, and a few years later founded his own consulting business, Phimation. 


What has kept Dave working with Patti Engineering for the better part of a decade? He says, “Sam is open to hearing new ideas, and that infuses the whole organization.  I also work with 3 project managers; they are remarkable in their technical skill, work ethic, and business instincts.  The “middle layer” of a company is always important, and the company is in good hands in that area.”


Dave has built organizations most of his life and spends his time helping others build their businesses. The trend he is seeing across clients from various industries “Borrowing from Jack Welch, the pace of change of society and markets is faster than the pace of change inside most companies.  It’s a challenge to be strategic, and agile, and innovative, and responsive.  Most of my clients are changing how they manage their business.  Those changes take work and investment, and are uncertain, complex and challenging.  But if we make good pivots, we’ll make people’s lives better inside and outside the company.” 


For someone just starting out, Dave advises, "My most valuable skill is knowing how I learn. Everyone's journey is different, and you'll live and learn and adjust as you go. And, important things usually take time to develop – most overnight successes took 10 years to create." 


Dave has three siblings: a brother who does very similar work, a sister who stayed close to their hometown in Connecticut, and a twin sister who also became a teacher and stayed with it.  An avid athlete, he enjoys "beer league" hockey on the weekends, along with surfing, biking, and even a little karaoke for a new kind of challenge. With his kids all in college, he enjoys his quiet evenings with Netflix, naps, long bike rides, fascinating podcasts, and relaxing hammock time. 

 

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