Welding burn remover

Abstract

A welding burn remover includes: a mover including a movable body to which a support of an electrolytic end effector is attached and at least one actuator that moves the movable body; and processing circuitry configured to control the actuator. The processing circuitry is configured to execute an electrolytic treatment in which the processing circuitry controls the actuator to slide an electrode on a welding burn portion of a welded workpiece through a short-circuit prevention cover while controlling a pump to supply an electrolytic solution to a boundary by an electrolytic solution feeder. The support of the electrolytic end effector includes: a base attached to the movable body of the mover; and a coupler connecting the electrode to the base such that the electrode is angularly displaceable relative to the base.

What is claimed is: 
     
         1 . A welding burn remover comprising:
 an electrolytic end effector including
 an electrode, 
 a support supporting the electrode, and 
 a non-conductive short-circuit prevention cover coveting the electrode and including holes; 
   an electrolytic solution feeder including
 a supply passage through which an electrolytic solution is supplied to a boundary between a welding burn portion on a surface of a welded workpiece and the short-circuit prevention cover and 
 a pump that supplies the electrolytic solution to the supply passage; 
   a mover including
 a movable body to which the support of the electrolytic end effector is attached and 
 at least one actuator that moves the movable body; and 
   processing circuitry configured to control the actuator, wherein:   the processing circuitry is configured to execute an electrolytic treatment in which the processing circuitry controls the actuator to slide the electrode on the welding burn portion of the welded workpiece through the short-circuit prevention cover while controlling the pump to supply the electrolytic solution to the boundary by the electrolytic solution feeder; and   the support of the electrolytic end effector includes
 a base attached to the movable body of the mover and 
 a coupler connecting the electrode to the base such that the electrode is angularly displaceable relative to the base. 
   
     
     
         2 . The welding burn remover according to  claim 1 , wherein the processing circuitry is configured to control the actuator to advance the electrode in a second direction while pressing the electrode against the surface of the welded workpiece in a first direction intersecting with the surface of the welded workpiece. 
     
     
         3 . The welding burn remover according to  claim 2 , wherein the electrode includes an electrode surface that extends in a third direction orthogonal to the first direction and the second direction and is opposed to the surface of the welded workpiece. 
     
     
         4 . The welding burn remover according to  claim 2 , wherein the coupler includes a pivot shaft extending in the second direction. 
     
     
         5 . The welding burn remover according to  claim 4 , wherein:
 the electrode includes an electrode surface opposed to the surface of the welded workpiece;   the electrode surface includes a flat surface; and   the coupler further includes an elastic body that biases the electrode toward a neutral posture in which the flat surface is orthogonal to the first direction.   
     
     
         6 . The welding burn remover according to  claim 2 , wherein the coupler connects the electrode to the base such that the electrode is prevented from being angularly displaced about a third direction orthogonal to the first direction and the second direction. 
     
     
         7 . The welding burn remover according to  claim 2 , wherein the processing circuitry is configured to control the actuator to reciprocate the electrode in a third direction orthogonal to the first direction and the second direction while the electrode advances in the second direction. 
     
     
         8 . The welding burn remover according to  claim 2 , further comprising a jig at which the welded workpiece is placed, wherein:
 the welded workpiece is a plate-shaped structural body;   the jig supports the welded workpiece that is placed vertically; and   a third direction orthogonal to the first direction and the second direction is an upper-lower direction.   
     
     
         9 . The welding burn remover according to  claim 2 , further comprising a jig at which the welded workpiece is placed, wherein:
 the welded workpiece is a plate-shaped structural body including a bent shape; and   the jig includes a portion that supports the welded workpiece in a horizontal direction and includes a shape corresponding to the bent shape of the welded workpiece.   
     
     
         10 . The welding burn remover according to  claim 1 , further comprising an electrolytic solution sensor that detects a flow of the electrolytic solution in the supply passage, wherein
 the processing circuitry is configured to stop the electrolytic treatment when the processing circuitry determines based on a detection signal of the electrolytic solution sensor that the flow of the electrolytic solution in the supply passage has stopped.   
     
     
         11 . The welding burn remover according to  claim 1 , further comprising:
 a jig at which the welded workpiece is placed; and   an identification sensor that identifies a type of the welded workpiece placed at the jig, wherein:   the processing circuitry is configured to
 store control patterns of the actuator, 
 determine the type of the welded workpiece placed at the jig based on a detection signal of the identification sensor, and 
 select the control pattern corresponding to the determined type from the control patterns and execute the selected control pattern. 
   
     
     
         12 . The welding burn remover according to  claim 1 , further comprising:
 a jig at which the welded workpiece is placed; and   a waste liquid receiver located under the welded workpiece placed at the jig.