Method of manually feeding coordinate system and robot control device

In an industrial robot, a method of manually feeding a coordinate system by moving and rotating a specified coordinate system itself by jog control to set and adjust the coordinate system, comprising the steps of:

• specifying a coordinate system to be set and adjusted by a jog-feed operation;
• setting a robot position at a starting point of the jog-feed at a specified point on the specified coordinate system to store data of the position;
• carrying out the jog-feed operation to move said specified coordinate system;
• when carrying out the jog-feed operation to move said specified coordinate system, controlling the robot to be moved according to the movement of said specified coordinate system;
• finishing the jog-feed operation after it is confirmed that the robot is moved to reach a target point or area;
• and
• calculating for the setting and the adjusting of the specified coordinate system on the basis of the position data on said specified coordinate system, which is stored at the starting time of the jog-feed operation, and data of an amount of successive jog operation from the starting time of the jog-feed operation to a finishing time thereof.

A method of manually feeding, by using a robot control device connected to a robot, a coordinate system set in the robot control device by a jog-feed operation, comprising the steps of:

• (a) setting a jog-feed mode to a mode in which a manual-feed target coordinate system is manually fed in conformity to the coordinate system itself or another coordinate system set in the robot control device;
• (b) positioning a tool distal end point of the robot at the origin of the moving target coordinate system to store the position data in relation to another coordinate system set in the robot control device;
• (c) successively carrying out translating jog-feed operation of said moving target coordinate system in each axial direction so as to cause the origin of said moving target coordinate system to agree with a specific vertex of a workpiece;
• (d) for each successive translating jog-feed operation, causing the robot to move by an amount corresponding to the translating jog-feed operation;
• (e) for each execution of the translating jog-feed operation, successively updating a position of said moving target coordinate system with respect to another coordinate system in step (b) depending upon an amount of the jog-feed inputted into the robot control device;
• (f) successively carrying out the translating jog-feed operation, and finishing the translating jog-feed operation after it is confirmed that the tool distal end point of the robot finally reaches a target point such as a vertex of the workpiece;
• (g) moving the tool distal end point of the robot to a point apart from the origin by a certain distance on specific one axis in axes of said moving target coordinate system at a time of step (f) after the completion of the translation feed in step (f), and storing the position data with respect to another coordinate system in step (b);
• (h) successively carrying out rotary jog-feed operation about the axes of said moving target coordinate system so as to cause the specific one axis in step (g) to agree with a target area such as an edge line of the workpiece;
• (i) for each successive rotary jog-feed operation, causing the robot to move by an amount corresponding to the rotational jog-feed;
• (j) for each execution of the rotary jog-feed, successively updating a position of said moving target coordinate system with respect to another coordinate system in step (b) depending upon an amount of the jog-feed inputted into the robot control device;
• and
• (k) successively carrying out the rotary jog-feed operation, and finishing the rotary jog-feed operation after it is confirmed that the tool distal end point of the robot finally reaches a target area such as the edge line of the workpiece.

A robot control device comprising:

• means for specifying a target coordinate system for manual-feed;
• means for successively and manually inputting the content of the manual-feed according to a reference coordinate system for the manual-feed;
• means for successively moving the target coordinate system for the manual-feed in response to the content of the successive manual-feed;
• and
• means for successively causing the robot to move equivalently to the successive movement.