Magnetic pole iron core brazing interface

Abstract

The utility model relates to the technical field of motor manufacturing, in particular to a magnetic pole iron core brazing interface, which comprises a first magnetic pole punching sheet, a second magnetic pole punching sheet, a magnetic pole iron core copper end plate and an alloy copper rod, according to the utility model, the abdicating hole of the alloy copper bar of the conventional magnetic pole punching sheet is enlarged (the single side is at least more than 5mm), so that the magnetic pole iron core copper end plate and the magnetic pole punching sheet form a cavity at the position of a brazing joint to reduce the heat dissipation during the welding of a gas welding gun, and the upper end surface of the optimized magnetic pole punching sheet is not completely cut; the upper end face of the magnetic pole iron core can be integrally affected by press-fitting pressure in the press-fitting process, it is guaranteed that the brazing time of a magnetic pole punching sheet without an optimized opening and the magnetic pole iron core before optimization is 1.5-2 hours, the brazing time of the magnetic pole punching sheet after optimization is only 0.5 hour, and the problems that welding gas resources are wasted, labor is wasted, and the working intensity of operators is too large are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, specifically to an interface for brazing magnetic pole cores. Background Technology

[0002] Magnetic pole laminations are formed by stacking to create motor magnetic poles. They are used to transmit magnetic fields and support coil windings, and are commonly found in the manufacture of hydroelectric generators, main magnetic poles of DC motors, and rotors of permanent magnet motors. Some magnetic pole cores require alloy copper for conductivity because they need to be started under load. The alloy copper needs to be brazed to the copper end plates of the magnetic pole core.

[0003] Currently, in the existing brazing process between the alloy copper rod and the copper end plate of the magnetic pole core, a significant amount of heat is lost and dispersed into the magnetic pole core during the heating process with the acetylene torch flame, resulting in excessively long welding times. This leads to a waste of welding gas resources, wasted labor, and excessive workload for operators.

[0004] Based on this, the present invention designs an interface for brazing magnetic pole cores to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a brazing interface for magnetic pole iron cores.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an interface for brazing a magnetic pole core, comprising a first magnetic pole lamination, a second magnetic pole lamination, a copper end plate of the magnetic pole core, and an alloy copper rod, wherein multiple first magnetic pole laminations are connected by stacking, and a second magnetic pole lamination is provided on the outer side of each of the two first magnetic pole laminations, and the second magnetic pole laminations are also stacked with the first magnetic pole laminations;

[0007] The second magnetic pole piece includes a second sheet body, a second locking protrusion, a second copper rod relief hole, a second through hole, and a second ventilation hole. The second sheet body is provided with a second locking protrusion, and multiple second copper rod relief holes are opened on the edge of the second locking protrusion. Two second through holes are symmetrically opened on the second sheet body, and a second ventilation hole is opened below the center of the two second through holes.

[0008] As a preferred embodiment of this utility model, the outer side of the second magnetic pole lamination is provided with a magnetic pole iron core copper end plate, and a plurality of alloy copper rods are fixedly welded to the magnetic pole iron core copper end plate by fiber welding.

[0009] As a preferred technical solution of this utility model, the copper end plate of the magnetic pole core and the second magnetic pole lamination are connected by riveting or by using high-strength bolts to pass through the lamination assembly and tighten them.

[0010] As a preferred technical solution of this utility model, the first magnetic pole punch includes a first sheet body, a first locking protrusion, a first copper rod relief hole, a first through hole and a first ventilation hole. The first sheet body is provided with a first locking protrusion, and a plurality of first copper rod relief holes are opened at the edge of the first locking protrusion. Two first through holes are symmetrically opened on the first sheet body, and a first ventilation hole is opened below the center of the two first through holes.

[0011] As a preferred embodiment of this utility model, the positions of the plurality of second copper rod holes on the second magnetic pole piece correspond one-to-one with the positions of the plurality of first copper rod holes on the first magnetic pole piece.

[0012] As a preferred embodiment of this utility model, the positions of the second through hole and the second ventilation hole on the second magnetic pole piece are respectively set to correspond to the positions of the first through hole and the first ventilation hole on the first magnetic pole piece.

[0013] As a preferred technical solution of this utility model, the shape of the copper end plate of the magnetic pole core is adapted to the overall outer contour of the magnetic pole core after lamination is stacked.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model enlarges the clearance hole of the conventional magnetic pole stamping alloy copper rod (at least 5mm on each side), creating a cavity at the brazing joint between the copper end plate of the magnetic pole core and the magnetic pole stamping to reduce heat dissipation during gas welding. At the same time, the optimized magnetic pole stamping does not completely cut off the upper end face, ensuring that the upper end face can be affected by the pressing pressure during the pressing process of the magnetic pole core. Before optimization, the brazing time for one magnetic pole core was 1.5-2 hours, while after optimization, it only takes 0.5 hours, effectively solving the problems of wasted welding gas resources, wasted labor, and excessive workload for operators. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a partially enlarged structural diagram of the magnetic pole core of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the first magnetic pole piece of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of the second magnetic pole piece of this utility model.

[0020] In the figure: 1. First magnetic pole lamination; 101. First plate; 102. First locking protrusion; 103. First copper rod clearance hole; 104. First through hole; 105. First ventilation hole; 2. Second magnetic pole lamination; 201. Second plate; 202. Second locking protrusion; 203. Second copper rod clearance hole; 204. Second through hole; 205. Second ventilation hole; 3. Copper end plate of magnetic pole core; 4. Alloy copper rod. Detailed Implementation

[0021] The following will refer to the appendix in the embodiments of this utility model. Figure 1-3 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Example

[0023] Please see Figure 1-3 The present invention provides the following technical solution: an interface for brazing a magnetic pole core, comprising a first magnetic pole lamination 1, a second magnetic pole lamination 2, a copper end plate 3 for the magnetic pole core, and an alloy copper rod 4. Multiple first magnetic pole laminations 1 are connected by stacking. Second magnetic pole laminations 2 are provided on the outer sides of the first magnetic pole laminations 1 at both ends. The second magnetic pole laminations 2 and the first magnetic pole laminations 1 are also stacked.

[0024] The second magnetic pole piece 2 includes a second piece 201, a second locking protrusion 202, a second copper rod relief hole 203, a second through hole 204, and a second ventilation hole 205. The second piece 201 is provided with the second locking protrusion 202, and multiple second copper rod relief holes 203 are opened on the edge of the second locking protrusion 202. Two second through holes 204 are symmetrically opened on the second piece 201, and a second ventilation hole 205 is opened below the center of the two second through holes 204.

[0025] The outer side of the second magnetic pole lamination 2 is provided with a magnetic pole iron core copper end plate 3, and multiple alloy copper rods 4 are fixedly welded to the magnetic pole iron core copper end plate 3 by fiber welding.

[0026] Through the above-mentioned structural design of the second magnetic pole piece 2, the enlarged second copper rod makes the hole 203 so that the copper end plate 3 of the magnetic pole core and the second magnetic pole piece 2 form a cavity at the brazing joint position to reduce the heat dissipation during gas welding. By reducing the heat loss during the brazing of the magnetic pole core, the welding time is shortened.

[0027] The copper end plate 3 of the magnetic pole iron core and the second magnetic pole punch 2 are connected by riveting or by using high-strength bolts to pass through the stacked plate assembly and tighten them.

[0028] The first magnetic pole piece 1 includes a first piece 101, a first locking protrusion 102, a first copper rod relief hole 103, a first through hole 104, and a first ventilation hole 105. The first piece 101 is provided with the first locking protrusion 102, and a plurality of first copper rod relief holes 103 are opened at the edge of the first locking protrusion 102. Two first through holes 104 are symmetrically opened on the first piece 101, and a first ventilation hole 105 is opened below the center of the two first through holes 104.

[0029] The positions of the multiple second copper rod holes 203 on the second magnetic pole piece 2 correspond one-to-one with the positions of the multiple first copper rod holes 103 on the first magnetic pole piece 1.

[0030] The positions of the second through hole 204 and the second ventilation hole 205 on the second magnetic pole piece 2 are respectively set to correspond to the positions of the first through hole 104 and the first ventilation hole 105 on the first magnetic pole piece 1.

[0031] The shape of the copper end plate 3 of the magnetic pole core is adapted to the overall outer contour of the magnetic pole core after lamination.

[0032] The working principle and usage process of this utility model are as follows: In specific use, the first magnetic pole piece 1 is connected by overlapping, and a second magnetic pole piece 2 is overlapped and connected to the outermost side of the first magnetic pole piece 1, so that the second through hole 204 and the second ventilation hole 205 on the second magnetic pole piece 2 are placed corresponding to the first through hole 104 and the first ventilation hole 105 on the first magnetic pole piece 1. At this time, the second copper rod relief hole 203 on the second magnetic pole piece 2 corresponds one-to-one with the first copper rod relief hole 103. The enlarged second copper rod relief hole 203 on the second magnetic pole piece 2 forms a cavity at the brazing joint of the magnetic pole iron core copper end plate 3 and the second magnetic pole piece 2, reducing the heat dissipation when the gas welding gun welds the alloy copper rod 4, thus solving the problem of heat loss and excessive welding time during the brazing of the magnetic pole iron core.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A brazing interface for a magnetic pole core, characterized in that: It includes a first magnetic pole piece (1), a second magnetic pole piece (2), a magnetic pole iron core copper end plate (3) and an alloy copper rod (4). Multiple first magnetic pole pieces (1) are connected by stacking. Second magnetic pole pieces (2) are provided on the outer side of the first magnetic pole pieces (1) at both ends. The second magnetic pole pieces (2) are also stacked with the first magnetic pole pieces (1). The second magnetic pole piece (2) includes a second piece (201), a second locking protrusion (202), a second copper rod relief hole (203), a second through hole (204), and a second ventilation hole (205). The second piece (201) is provided with a second locking protrusion (202). Multiple second copper rod relief holes (203) are opened on the edge of the second locking protrusion (202). Two second through holes (204) are symmetrically opened on the second piece (201). A second ventilation hole (205) is opened below the center of the two second through holes (204).

2. The interface for brazing a magnetic pole core according to claim 1, characterized in that: The outer side of the second magnetic pole lamination (2) is provided with a magnetic pole iron core copper end plate (3), and multiple alloy copper rods (4) are fixedly welded to the magnetic pole iron core copper end plate (3) by fiber welding.

3. The interface for brazing a magnetic pole core according to claim 1, characterized in that: The copper end plate (3) of the magnetic pole core and the second magnetic pole lamination (2) are connected by riveting or by using high-strength bolts to pass through the lamination assembly and tighten.

4. The interface for brazing a magnetic pole core according to claim 1, characterized in that: The first magnetic pole piece (1) includes a first piece (101), a first locking protrusion (102), a first copper rod relief hole (103), a first through hole (104) and a first ventilation hole (105). The first piece (101) is provided with a first locking protrusion (102), and a plurality of first copper rod relief holes (103) are opened at the edge of the first locking protrusion (102). Two first through holes (104) are symmetrically opened on the first piece (101), and a first ventilation hole (105) is opened below the center of the two first through holes (104).

5. The interface for brazing a magnetic pole core according to claim 1, characterized in that: The positions of the multiple second copper rod holes (203) on the second magnetic pole piece (2) correspond one-to-one with the positions of the multiple first copper rod holes (103) on the first magnetic pole piece (1).

6. The interface for brazing a magnetic pole core according to claim 1, characterized in that: The positions of the second through hole (204) and the second ventilation hole (205) on the second magnetic pole piece (2) are respectively set to correspond to the positions of the first through hole (104) and the first ventilation hole (105) on the first magnetic pole piece (1).

7. The interface for brazing a magnetic pole core according to claim 1, characterized in that: The shape of the copper end plate (3) of the magnetic pole core is adapted to the overall outer contour of the magnetic pole core after lamination.

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