Technical specification for 31 articulated arm options

There are 4 kinds of joints offered by igus® which can be combined to form articulated arms. A pure pivot joint and a pure rotary joint (1 DOF), as well as the original multiple-axis joint for rotating and pivoting (2 DOF) – available in symmetrical (+/-90°) and asymmetrical (+130°/-50°) versions.

The combination produces altogether 31 articulated arms with up to 5 DOF (degrees of freedom). Our catalog gives you an overview on p. 10 – 11 (prices p. 12 – 13). The STEP data for all options can be downloaded from mid-August in the download area.

Technical specification for 31 articulated arm options

As a standard, all articulated arms are equipped and delivered with aluminum rods l=100 mm. Other lengths are possible with additional charge (€42.0/m aluminum tube). The clearances between the articulated points (designated as x1 to x4) are derived from this. These clearances and the permitted loads resulting thereof are summarized in a new data sheet. Likewise the resulting system weights. (All data refer to the rod length 100 mm). Download here or at our support & service area:

technische Spezifikation xDOF.pdf (36,13 kb)

Components for the wire feedthrough in a robolink joint

How are the wires fed through in a lower joint?

This feedthrough is important to make the movements of the joints independent of each other. For this purpose a Bowden cable system is used, in which 4 draw wires are routed in parallel (Picture 1). The components are shown here to guarantee this feedthrough. A maximum of four wires can be routed in the installation size RL-50. In addition, max. 3 sensor cables or other cables can be fed through the inside (max. diameter 4 mm each):

[forcecaption]Picture 1: 2 Joints: yellow wires: pivot, white wires: rotation joint 2  [forcecaption]Picture 2: Upper mounting bracket<br><br>
[forcecaption]Picture 3: Segments  [forcecaption]Picture 4: Lower mounting bracket

The following are needed for the feedthrough: 1 upper (Picture 2) and lower (Picture 4) mounting bracket, segments between the end pieces (Picture 3):

RL-50-001: 39 segments

RL-50-002: 43 segments

RL-50-PL1: 26 segments