we run regular lifetime tests with our gears in our lab. Based on these tests, we did some inside changes in our gears, most important is the change of gear geometry and gear pulley material during the last months (from iglidur J to iglidur A 180). By this, we improved lifetime and friction (efficiency) in the joints. Please find attached NEW data sheets for our joints, now also including the current standard transmission ratios we can supply from stock (from 1:5 up to 1:70).
NEW Data sheet for symmetrical joints with 2 bearings (vertical installation)
NEW Data sheet for asymmetrical joints with 1 bearing (horizontal installation)
At this year’s MOTEK show in Stuttgart (GER) we will show the possibility to build 4 DOF robot arms with our motorized joints. 2 films at the end of this entry show 2 possible concepts:
1) “small” version with 4 joints size 30 – 30 -20 – 20, built with igus DC motors. No programming possible, just a joystick control.
2) “big” version with 4 joints size 50 – 50 – 30 – 20, built with igus stepper motors and a robolink gripper.
Please be aware that both arms are no sales products. They are examples of how a joint arm could look like. The connection parts are made of folded metal sheet parts. Please contact me for further questions in this issue (firstname.lastname@example.org).
Also attached our new catalogue (this version in GER with more RL-D infos and german list prices). Eng. version will follow soon.
LINK: de_robolink_08-2015 (3.80 mb)
And additionally 2 updated versions of tech. data sheets for symmetrical joints (version 101 with 2 PRT) and asymmetrical joints (version 102 with 1 PRT)
LINK: tech-data-rl-d-101_d-eng_15_11 (171.03 kb)
LINK: tech-data-rl-d-102-_d-eng_16_01 (162.11 kb)
We control the position of our RL-D joints by using the motor encoder (of our igus stepper motors). In order to define a reference point (or ZERO position), an additional inductive initiator switch (=Ini) can be installed on the joint as an option. The spec. of the Ini switch is given below, it is the same part that igus uses for drylin products. The inductive swich needs a steel part as trigger, we install a set pin in the moving part of our PRT inner ring.
The installation finally looks like this:
Please find attached current (preliminary) data sheets for our new robolink D Joints. These Joints exist in 3 sizes: -20, -30 and -50 (based on the Dimensions of our rotary sliding tables PRT).
RL-D-xx-101: symmetrical Joint with 2 PPRT for vertical Installation (used in our robotic arms),
tech data RL-D-101 _D-ENG_.pdf (167.44 kb)
RL-D-xx-102: asymmetrical Joint with 1 PRT for horizontal Installation (used as positioning device or as 1st axis in a robotic arm)
tech data RL-D-102 _D-ENG_.pdf (150.10 kb)
I will publish 3D Step data of These Joints beginning of next week in this blog.
please find attached an update of the robolink technical documentation paper.
It is based on the wire driven robolink joints. A similar document for robolink D (direct drive) will follow later this year.
Documentation_robolink_kit_(#3 _15-01)_EN.pdf (3.33 mb)