The basic idea for this development is the wish to be able to build up a 6 DOF robot. For that purpose, a strong “base joint” was needed. It had to be stronger than the previous versions, and it should be able to lead the wires and cables of at least 4 more DOF inside, as well as additional pneumatic and/or electric cables.
The new joint is based on igus’ “PRT-01-50” slewing ring bearing. It has 2 DOF (degres of freedom): 1) rotation (+/-90°), 2) pivoting movement (+/-90°).
At this year’s hanover fair (08.04.13-12.04.13) we will present this base joint in a 6 DOF robot arm. Today you can watch 2 videos: 1) first kinematic test of the 2 DOF base joint RL-90-BL1 and 2) first test run of a 6 DOF installation, with 2 more robolink joints.