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Pneumatic and hydraulic grippers are amongst the preferred gripper varieties (together with servo-electric). In the event you’re questioning whether or not pneumatic or hydraulic grippers are more likely to be one of the best match on your utility, this text is for you as we examine and distinction the design, efficiency and value of hydraulic and pneumatic grippers.
Spoiler: As showdowns go, this one is straightforward to name. We’ll quickly uncover that for collaborative robotic purposes, there is no such thing as a critical competitors between the 2: pneumatic grippers are the best alternative on your cobot-powered purposes.
Let’s discover out why…
What’s a hydraulic gripper?
Hydraulic grippers are heavy-duty grippers that apply the kind of forces required to deal with heavy (often >50kg, 110.23 lb) gadgets.
How does a hydraulic gripper work?
Hydraulic grippers use pressurized fluids to maneuver a piston. When the piston strikes, it transfers this power to the claw, opening and shutting it.
What’s a pneumatic gripper? How does a pneumatic gripper work?
Pneumatic grippers use stress from a compressed air provide system to produce the facility required to maneuver an inside piston, thereby opening and shutting the pneumatic gripper fingers (or ‘jaws’). Pneumatic gripper mechanisms include no motors or gears, which makes it straightforward to translate the facility of a piston/cylinder system right into a gripping power.
Because the majority of producing amenities have already got entry to compressed air, deploying pneumatic grippers is straightforward and cost-effective. One of many important advantages of pneumatic grippers is that they supply a excessive quantity of gripping power in a small, gentle and low-cost bundle. For manufacturing amenities the place house is at a premium, pneumatic grippers are a cheap and ergonomic alternative. They’re additionally fairly straightforward to take care of –after getting your pneumatic gripper working, it may present hundreds of thousands of cycles with out requiring upkeep.
What’s the distinction between pneumatic and hydraulic grippers?
One of many major the reason why hydraulic grippers are not often, if ever, utilized in collaborative automation is as a result of the standard payloads do not match. For causes of security, ease of deployment, value, mobility and footprint, cobots are designed for lower-than-hydraulic payloads of as much as round 16kg (35.3 lbs). Subsequently, for nearly each conceivable cobot-powered utility, utilizing a hydraulic gripper could be costly overkill.
If you could raise weights of 500kg (1102.31lb), for instance, an ordinary industrial robotic with a hydraulic gripper and fencing could be the only option. However for Common Robots prospects, pneumatics provide completely sufficient vitality density for purposes similar to meeting, materials dealing with and machine tending.
Moreover, since hydraulic grippers include pistons and oiled components, they’re much higher-maintenance than their servo-electric and pneumatic counterparts. Hydraulic gripper upkeep can also be advanced and might require expert technicians to take care of the oil, pump and reservoir. This highlights one other necessary cause why pneumatic grippers are typically most popular over hydraulic grippers for collaborative purposes: cobots are designed for straightforward operation by non-expert end-users, so including a fancy hydraulic gripping system to a cobot will undermine the general system’s ease of use.
Since they depend on air slightly than fluids, pneumatic robotic grippers could be deployed in clear room environments. By comparability, hydraulic robotic grippers are too messy –particularly after they fail and leak hydraulic fluid into your work cell.
Moreover, by way of value, hydraulic grippers are far more costly than their pneumatic counterparts. In case you are drawn to cobots partly due to their low value in comparison with conventional automation, then it does not make plenty of sense to deploy a hydraulic gripper that might simply value greater than the cobot itself.
Lastly, if accuracy is necessary to your collaborative utility, then needless to say pneumatic gripping methods present better accuracy than their hydraulic counterparts. Your gripper’s URCap software program and simple integration with Common Robots cobot vary ensures a relentless circulate of information that can be utilized to tweak your purposes and processes, scale back downtime and enhance productiveness.
URCaps are particular software program applications designed to make sure easy programming and management of UR licensed end-effectors and parts. UR+ is a world ecosystem of parts, software program, and utility kits which have been validated and licensed to be mechanically, electrically and digitally suitable with cobots from Common Robots. UR+ hosts a big selection of pneumatic grippers from you to select from.
Pneumatic grippers simply win this robotic gripper showdown, however they’ve their very own limitations. For instance, as a result of they depend on pressurized air circulate, power management just isn’t as exact as that supplied by electrical grippers. Offering a fragile grip can be a problem for pneumatic methods because it’s laborious to regulate the gripper at very low pressures. If an exterior air provide is required, this could add additional value to your deployment. And whereas pneumatic grippers are appropriate for a lot of clear room purposes, in the event that they fail, they will contaminate the air contained in the work cell. For these causes, some producers favor to make use of electrical grippers for his or her materials dealing with wants.
UR+ is a one-stop-shop for pneumatic robotic grippers
Let’s check out a few of pneumatic robotic gripper choices obtainable by way of UR+
The GRIPKIT-P Collection from Weiss Robotics is a pneumatic gripper and dealing with system for Common Robots. The GRIPKIT-P system comprises every little thing finish customers must arrange materials dealing with, meeting and machine tending duties inside minutes. In the event you want excessive dynamics and gripping power with compact dimensions, GRIPKIT-P pneumatic grippers (in parallel or centric design) are very best.
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