Industrial Robots Vs Collaborative Robots

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August 2020

Industrial Robots Vs Collaborative Robots (Cobots)

 

Industrial Robots

Industrial robots have been in production environments since the 1960’s with the first being introduced in GM. Over the years they have been developed, and the traditional car production workhorse has developed into numerous variations with traditional robots now being used in all types of industries from the automotive, biosciences food and drink and medical device manufacturing lines.

 

Traditionally developed for large heavier applications, these machines were traditionally bulky, and were generally “fixed” for one application. Today we see smaller much faster “industrial” robots used in many applications with some now bringing in collaborative style features.

 

Collaborative Robots

Cobots are becoming more and more popular and with an abundance of manufacturers bring them to market, they seem to have gained a good traction in the automation arena. Labelled as an almost out of the box solution, they do have a lot of kerb appeal.

Marketed as being designed to work next to humans they can be a good choice for enhancing production by removing repetitive tasks and carrying some dangerous or risky tasks so they can indeed potentially make working environments safer.

 

 

Robotic Safety

We cannot just deem machinery “safe”. Industrial robots have always been seem to be a beast that has to be put behind a cage, to restrict access, not only to guard against their movement but also the payload that they are carrying, which can now be up to 2500kg. The use of scanning systems can now reduce the amount of fixed guarding needed, but it’s safe to say they do require guarding considerations.

 

So which robot is the safer option?

The answer is, it depends on the application. Cobots have been designed with many safety features in them to allow them to work next to humans. Force feedback, easy to program small and portable does make them sound like a good option. However, if you are considering purchasing one, there still needs to be a lot of thought put into safety. There seems to be a misconception that cobots are simply “safe” If we put this into the same context as a car being safe when stationary, but put a spike on the front and drive it at 50mph into a human it becomes very unsafe. The same theory goes for cobots it comes down to the tooling, the product, and the environment it is to be deployed in.

Now this is in no way a means to limit their use, but it is important to understand that with each installation you need to consider how the cobot is going to be used. Speeds and location all come into keeping the cobot and the human safe and therefore a full risk assessment needs to be carried out.

 

Robotic Cost

If we look at smaller industrial robots, and cobots, there isn’t a huge amount of cost difference. Cobots do however come with the advantage that they are much easier to program, and therefore you can gain the advantage of not having to employ a software engineer for this. As previously mentioned, both types of robots do need risk assessments. The level of protection or guarding will depend on the application and therefore affect the cost. Put a drill head on either, then both the cobot and Industrial robot will create exactly the same hazard.

If the process you are considering can have tooling deigned to eliminate hazards, pick up from areas that won’t in itself create a hazard, then the cobot option can be a much more cost effective way forward. In addition, the simplicity of the programming can be very attractive.

 

Cobots or Robots – Which is right for you?

It could easily be both or neither and in reality, they are effectively two different animals both suited to different purposes. Cobots and robots aren’t necessarily in competition with one another as they perform complementary, albeit similar, roles in the world of manufacturing. Think of cobots as being a bit like a laptop while industrial robots are more like mainframes. For some tasks, cobots make more sense. For others, nothing but an industrial robot will do.

 

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