Automation of surface finishing processes

Abstract The development of robots capable of interacting dynamically with the environment has proven to be a difficult task. Since a majority of manufacturing tasks require interaction of robots with their environment, this has become an important focus for research in the industry. Solutions both to specific manufacturing operations and to the theoretical body of knowledge within the industry are extremely important. The interaction of the robot with its environment is investigated in this paper for the configuration of a quick actuator and sensor attached to the robot tool. This configuration has been tested in an industrial application for Steinway & Sons, the world renowned piano manufacturer, specifically for the automation of the labor-intensive rubbing and finishing operations. The robot architecture utilizes a combination of macro-micro manipulator to improve its response time. A quick actuator added to the end of the robot arm is the micromanipulator, and the robot arm is the macromanipulator. Force and impedance control laws are executed concurrently by two separate controllers to control the quick actuator and the robot arm respectively. The experimental system proves the ability of this configuration to follow the complex contour of a grand piano rim and to exert a given force while rubbing its surface.

[1]  Neville Hogan,et al.  High bandwidth force regulation and inertia reduction using a macro/micro manipulator system , 1988, Proceedings. 1988 IEEE International Conference on Robotics and Automation.

[2]  Henning Tolle,et al.  Force-Controlled Robotic Deburring , 1993 .

[3]  Mohamed A. Elbestawi,et al.  Robotic grinding force regulation: design, implementation and benefits , 1990, Proceedings., IEEE International Conference on Robotics and Automation.

[4]  D. E. Whitney,et al.  Historical Perspective and State of the Art in Robot Force Control , 1987 .

[5]  Mei-Hua Liu,et al.  Dynamic and adaptive force controllers for robotic manipulators , 1988, Proceedings. 1988 IEEE International Conference on Robotics and Automation.

[6]  Andre Sharon,et al.  Enhancement of Robot Accuracy using Endpoint Feedback and a Macro-Micro Manipulator System , 1984, 1984 American Control Conference.

[7]  R. H. Cannon,et al.  Initial Experiments on the End-Point Control of a Flexible One-Link Robot , 1984 .

[8]  Joris De Schutter,et al.  Improved force control laws for advanced tracking applications , 1988, ICRA.

[9]  Warren P. Seering,et al.  Understanding bandwidth limitations in robot force control , 1987, Proceedings. 1987 IEEE International Conference on Robotics and Automation.

[10]  Neville Hogan,et al.  Stable execution of contact tasks using impedance control , 1987, Proceedings. 1987 IEEE International Conference on Robotics and Automation.

[11]  S. Tilley,et al.  Experiments on end-point position and force control of a flexible arm with a fast wrist , 1986 .

[12]  Neville Hogan,et al.  Controller design in the physical domain (application to robot impedance control) , 1989, Proceedings, 1989 International Conference on Robotics and Automation.

[13]  Richard P. Paul,et al.  On position compensation and force control stability of a robot with a compliant wrist , 1988, Proceedings. 1988 IEEE International Conference on Robotics and Automation.

[14]  Neville Hogan,et al.  Stability problems in contact tasks , 1989 .

[15]  Warren P. Seering,et al.  On dynamic models of robot force control , 1986, Proceedings. 1986 IEEE International Conference on Robotics and Automation.

[16]  R. Roberts,et al.  The effect of wrist force sensor stiffness on the control of robot manipulators , 1985, Proceedings. 1985 IEEE International Conference on Robotics and Automation.

[17]  Paul Elosegui,et al.  Joint servoing for robust manipulator force control , 1990, Proceedings., IEEE International Conference on Robotics and Automation.

[18]  Masayoshi Tomizuka,et al.  Control of tool/workpiece contact force with application to robotic deburring , 1985, IEEE J. Robotics Autom..

[19]  H. Harry Asada,et al.  The direct teaching of tool manipulation skills via the impedance identification of human motions , 1988, Proceedings. 1988 IEEE International Conference on Robotics and Automation.