Robot with multi-joint arms movable in horizontal plane

Data processing: generic control systems or specific application – Specific application – apparatus or process – Robot control

Reexamination Certificate

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Details

C700S048000, C700S049000, C700S051000, C318S568110, C701S023000, C901S025000, C901S026000, C901S027000, C901S028000, C414S730000

Reexamination Certificate

active

06324444

ABSTRACT:

BACKGROUND OF THE INVENTION AND RELATED ART STATEMENT
1. Field of the Invention
The present invention relates to a robot with multi-joint arms and more particularly relates to a robot having articulated first and second arms having predetermined lengths respectively, the second arm having a free end to which a working member is removably connected, the working member having a predetermined length which determines the effective length of the second arm, the data representing the effective length of the second arm is entered to renew the existing effective length of the second arm, the renewed value of the effective length of the second arm being used to calculate out the data for controlling the operations of the first and second arms.
2. Prior Art
The robot with multi-joint arms movable in a horizontal plane as well as in vertical direction has been generally known. The conventional robot substantially comprises a first arm, a second arm articulated to one end of the first arm and a working member fixedly connected to the free end of the second arm. It has been a problem that the working member is fixedly connected to the second arm resulting in inability of optional adjustment in the effective length of the second arm with respect to a work to be processed. Therefore it has been required to change the second arm depending on a work to be processed.
Objects of the Invention
The invention has been provided to eliminate the defects and disadvantages of the prior art. It is therefore a principal object of the invention to provide a mechanically compact and dimensionally small seized robot.
It is another object of the invention to dispense with exchange of the second arm due to a work to be processed.
It is another object of the invention to provide a plurality of working members having predetermined lengths respectively, which may be selectively and removably connected to the second arm to determine the effective length of the second arm corresponding to any of the various works to be processed.
It is another object of the invention to provide a working member which may be easily connected and easily removed to and from the second arm.
It is still another object of the invention to provide a working member having a buffer against an impact which may be caused during operation of the robot.
SUMMARY OF THE INVENTION
In short, the invention substantially comprises a robot having articulated first and second arms mounted thereto such that the first and second arms may be turningly moved in a horizontal plane as well as in vertical direction by means of drive motors, the second arm having a free end to which a supplementary unit are adjustably connected, the supplementary unit including a joint member and a working member, the joint member being adjustably connected to the free end of the second arm, the working member being removably connected to the joint member, the working member having a predetermined length and being designed to provide an effective length of the second arm, the data representing the effective length of the second arm being entered to renew the existing effective length of the second arm, the data representing the renewed effective length of the second arm being used to calculate out a value for controlling the operations of the first and second arms.


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patent: 5982127 (1999-11-01), Matsubara et al.

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