摘要:
In a discharge coating apparatus a vibrational motion in the longitudinal direction of coating material electrode (2), such as to break the surface of a workpiece (1) at its point, and a suitable voltage pulse, synchronized with the above vibration, are applied to form a coating layer (3) by a melt-adhered portion of the coating material electrode on the surface of the workpiece due to the heat produced. An additional transverse motion is applied to the coating material electrode which is thus relatively moved along the workpiece surface. The coating material electrode comes into contact with the workpiece surface not perpendicularly but at a fixed angle thereto and is then removed from its surface. This additional motion is preferably a rotation around the central shaft of the coating material electrode. The coating material electrode may be formed with a concave portion or hole along its rotational centre. A skipping mechanism consisting of an elastic member is provided between the electrode rotating apparatus and the electrode to prevent the vibrations of the coating material electrode and the portion that vibrates together therewith from being transferred to or acting on the drive section for applying the rotational motion.
摘要:
A floating reference voltage is generated in response to the low frequency components of weld current and is utilized in the control of the width of travel of a welding arc back and forth across a gap to be filled with weld metal. The arc current is integrated during each traverse across the gap and this integral is compared with the floating reference so that as the wall of the gap is approached, the direction Of travel of the arc will be reversed. Provision is made for avoidance of the effects of "dip transfer".
摘要:
A welding device (100) is provided with: an articulated robot (11) having a plurality of drive axes; an end effector (23) supported by the articulated robot; a distal-end axis drive mechanism (21) which is disposed between a distal-endmost drive axis (19) of the articulated robot and the end effector, and which causes the distal-end axis of the end effector to perform a weaving operation; and a drive control unit (41) which drives the articulated robot and the distal-end axis drive mechanism. The distal-end axis drive mechanism includes a first axial drive unit for driving in a first axial direction perpendicular to the distal-end axis of the end effector, and a second axial drive unit for driving in a second axial direction perpendicular to the distal-end axis and the first axial direction.
摘要:
In order to provide a welding system capable of freely controlling dispersion and concentration of arc heat input at a groove face of base material and enable to ensure melting of the base material while restraining excessive weld heat input by carrying out a control of a heat input distribution of arc, in arc welding by a wire consumable electrode system, at a groove between welded members, a position of a weld torch or feed speed of a wire is periodically varied and welding is carried out by controlling a phase difference between the variation and an arc current characteristic when it is changed.