This video features an automated system designed to assemble o-ring assemblies, developed by FANUC Authorized Integrator Compass Automation. The system features the FANUC LR Mate 200iC, a robot that is ideal for small part assembly applications. The product consists of a rounded pin inserted into a cylindrical socket, where the pin is retained with a rubber o-ring. Individual components are fed into the system via vibratory feeder bowls.
First, a socket is introduced into the system. A through-beam sensor verifies that a part is in position, signaling a pneumatic actuator to present the part. A 2-axis pick and place picks the part from the escapement and places it onto a 6-position dial table.
In the next station, an o-ring is introduced into the system. Again, a through-beam sensor verifies that a part is in position, and signals a pneumatic escapement to present the part. A mandrel, mounted on a 2-axis slide system, is used to pick the o-ring. The mandrel advances into the escapement, collapsing inside the ID of the o-ring. As the mandrel retracts, it expands, pulling out an o-ring. The mandrel and o-ring advance horizontally. Simultaneously, a funnel mechanism advances towards an empty socket, forming a tight seal that guides the o-ring during assembly. The mandrel advances into the socket, collapsing into the funnel, and forcing the o-ring into the socket. The detent on the ID of the socket holds the o-ring while the mandrel and funnel retract.
In the final assembly step, the FANUC LR Mate 200iC Robot picks a rounded pin from an escapement. Here, the escapement functions the same as the socket and o-ring escapements. A through-beam sensor verifies that a part is in position, and a pneumatic escapement presents the part. The robot performs a simple six-axis motion to insert the pin into the o-ring/socket sub-assembly.
The LR Mate then lifts the assembled product off the dial table, and passes the socket through a through-beam sensor, to ensure that the assembly was successful. The robot drops the finished product into an out-feed chute for post-processing and packaging. This machine processes one part every 7 seconds. This Compass Automation system made it possible for the end user to meet the standards set by their customer for complete assembly of the part at the required production rate.
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