The Structure, Work Space and Direct Kinematic of the Robots with 8 Axes of Type T Normal R Parallel (PM)(OM)

Abstract:

The paper presents first structural synthesis aspects of serial redundant open kinematic chains for industrial robots. These chains are obtained from 3-axis positioning kinematic chains that create non-degenerate workspaces plus first a rotation or translation coupling in parallel or perpendicular position, obtaining structures with 7-axis, to which by adding in the same way one more rotation or translation coupling structures with 8 axes are obtained. Below we present the direct kinematics analysis for this kinematic chain using the homogeneous operators’ method. This method is based on the use of homogeneous translation or rotation operators and covering the kinematic chain from the base to the characteristic point at its end by a mobile reference system. Based on linear and angular dimensions expressed in matrix by corresponding homogeneous operators we obtain the matrix of the robot characteristic point coordinates in the fixed reference system attached to the robot base. Thus, direct kinematics is solved qualitatively. For a set of numerical values, ​​we obtain a quantitative solution.

• Periodical: Applied Mechanics and Materials (Volume 658)
• Pages: 718-723
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.658.718
• Online since: October 2014
• Authors: Ionel Staretu*
• Keywords: Kinamtic Analyse, Kinematic Chain, Redundant Robot, Structural Systematization, Workspace

References

[1] S. Brell-Cokcan, M. Reis, H. Schmiedhofer, J. Braumann, Digital Design to Digital Production: Flank Milling with a 7-Axis Robot and Parametric Design. Computation: The New Realm of Architectural Design – Proceedings of the 27th eCAADe Conference, Istanbul (2009).

DOI: 10.52842/conf.ecaade.2009.323

[2] R. Qi, T. L. Lam, H. Qian, Y. Xu, Arc tracking on an eight-axis robot system, ROBIO (2011)678-683.

[3] J. Wang, Y. Li, X. Zhao, Inverse Kinematics and Control of a 7-DOF Redundant Manipulator Based on the Closed-Loop Algorithm. International Journal of Advanced Robotic Systems., V. 7, 4( 2010)1-9.

DOI: 10.5772/10495

[4] Information on www1: www. foodengineeringmag. com/.. /seven-ax.

[5] Information on www2: www. motoman. co.

[6] Information on www3: www. yaskawa. co. jp/en/.. /robotics/01. html. În cache.

[7] Information on www4: www. ragroup. com. au/robots/.. /sda_sia_seri.

[8] Information on www5: www. cloos. de/QIROX/.. /roboter/.. /index. p.

[9] Information on www6: www. densorobotics. com/news/34.

[10] I. Doroftei, Robotics (in Romanian), vol. 1 and 2 , Technique, Scientific and Didactical Publishing House, CERMI, Iasi, Romania, 2005-(2006).

[11] Fl. Dudita, D. Diaconescu, Gr. Gogu, Linkages mechanisms (in Romanian), Tehnica Press, Bucharest, Romania, (1989).