Motor stator winding laser welding method, stator winding and motor

Abstract

The invention discloses a motor stator winding laser welding method, a stator winding and a motor. The motor stator winding laser welding method comprises the following steps that temperature zone distribution is determined on the upper end surfaces of to-be-welded workpieces, and a first track and a second track which are scanned by laser beams are obtained on the basis of the temperature zone distribution; the to-be-welded workpieces are clamped, and the position relation between the to-be-welded workpieces is recognized; on the basis of the position relation, the first track and the second track are rotated to obtain a third track and a fourth track; and the laser beams repeatedly and alternately irradiate the upper end surfaces of the to-be-welded workpieces according to the third track and the fourth track, so that the to-be-welded workpieces are heated and fused. According to the technical scheme, the workpieces do not need to be completely attached during welding, the third track and the fourth track are obtained through reasonable temperature zone distribution, the laser beams are repeatedly heated along the third track and the fourth track, the scanning tracks are always kept on the upper end surfaces of the workpieces, and the situation that the laser beams penetrate through gaps between the workpieces or edges to burn lower insulating paint layers can be avoided.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a laser welding method for a motor stator winding, a stator winding and a motor. Background technique [0002] The driving motor is mainly composed of stator assembly, rotor assembly, end cover and auxiliary standard parts, such as figure 1 as well as figure 2 As shown, the stator winding includes an iron core 13, a flat copper wire winding 11, an insulating material 12 and the like. The flat wire motor is also called the hairpin motor. The stator winding uses flat wire 21. First, the winding is made into a shape similar to a hairpin, and it is inserted into the stator slot from one end, and then the hairpin wire at the other end of the stator is twisted to a fixed position before cutting Cut, and finally realize the electrical connection of the winding by welding. [0003] The existing windings are mainly welded by argon arc welding and laser. like image 3 , when the las...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to propose a laser welding method for motor stator windings, stator windings and motors, aiming at solving the problem of laser beam passing between workpieces during laser welding The technical problem of the gap or edge penetrating through and breaking down the insulating varnish layer below

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