Split assembly type DDR motor iron core

Abstract

The utility model provides a split assembly type DDR motor iron core. The split assembly type DDR motor iron core comprises a motor iron core body. According to the split assembly type DDR motor iron core, through the arrangement of the connecting grooves, the connecting blocks, the welding grooves, the riveting grooves and other structures, the twelve sub iron cores can be conveniently, rapidly and preliminarily connected in a buckling mode through the connecting grooves and the connecting blocks, the prototype of the motor iron core body is formed, the assembly difficulty and the time cost are greatly reduced, and the assembly efficiency is improved. The welding grooves of the adjacent sub-iron cores are spliced to form a complete groove body, welding materials are filled by means of welding equipment, the connection strength between the sub-iron cores is further enhanced, electromagnetic force and mechanical vibration during operation of the motor are effectively resisted, the iron core structure is stabilized, the welding quality and efficiency are further improved through the inverted-trapezoid design, and the riveting grooves are formed after welding. The integrity and the structural strength of the iron core are further improved, rivets are inserted into the riveting grooves and riveting operation is carried out, so that the sub iron cores are combined more tightly, and the stability of the motor iron core under complex working conditions is guaranteed in an all-around mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor core technical field more specifically, relate to a split type DDR motor core of assemblable. BACKGROUND

[0002] In today's rapid development of industry and technology era, the requirement of motor performance is increasingly strict. Especially in the aerospace industry, automobile assembly industry, medical equipment and other high-end fields, the demand for high-precision motor is extremely urgent. At present, the widely used brushless motor and servo motor on the market gradually exposes some limitations when facing these high-precision demand scenarios. With the continuous progress of science and technology, the related industry puts forward higher requirements for the precision, accuracy and overall performance of the motor, and the brushless motor and servo motor are difficult to meet the growing demand in these aspects. Under this background, DDR motor emerges as the times require. Compared with brushless motor and servo motor, DDR motor has the advantages of higher precision, higher accuracy and excellent performance, and can reach the national first-class energy efficiency standard.

[0003] However, the existing DDR motor core has the following problems when in use:

[0004] The existing DDR motor core is mostly produced by one-piece stamping forming process. With the increase of the outer diameter of the core, not only more types of molds and more complex and advanced production equipment are needed, but also higher requirements are put forward for the production process. At the same time, the workload and difficulty of the handling personnel also increase, and the types and space required for storage also increase significantly. In addition, in the general DDR motor stamping core production process, it is very inconvenient to operate when winding copper wire, and the danger coefficient is high. More importantly, this production method cannot meet the requirement of slot fill rate of DDR motor, which leads to the fact that the motor cannot achieve the expected performance.

[0005] The utility model can play the role of fast initial connection of twelve sub-cores through the buckle type design of connecting groove and connecting block, reduce the assembly difficulty and time cost, and have more flexibility. When the motor core is locally damaged, the damaged sub-core can be individually disassembled and replaced, the maintenance cost and downtime are reduced, and the availability of the equipment is improved. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the technical problems in the above background technology, and provides a split type DDR motor core.

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme: a split type DDR motor core, comprising: a motor core body, the motor core body is composed of twelve sub-cores, the bending degree of a single sub-core is 30 degrees, and twelve sub-cores are arranged around to form a complete motor core body with 360 degrees.

[0008] Further preferred: the sub-core is provided with a connecting groove at one end, and a connecting block is fixedly installed at the other end.

[0009] Further preferred: the connecting blocks of two adjacent sub-cores are connected with the connecting grooves in a snap-fit manner.

[0010] Further preferred: the outer end surface of the sub-core is provided with a welding groove at equal intervals.

[0011] Further preferred: the welding groove is arranged in an inverted trapezoidal shape, and the welding grooves at the outermost edges of two adjacent sub-cores form a complete welding groove.

[0012] Further preferred: the upper end of the sub-core is provided with a plurality of riveting grooves. Beneficial effects

[0013] 1. By providing the connecting groove and the connecting block, the connection operation of the sub-core 2 is greatly simplified during the assembly stage. When one sub-core is selected as the starting point, the connecting block of the subsequent sub-core is aligned with the connecting groove of the previous sub-core, and the preliminary connection can be quickly and accurately achieved. This design makes the assembly process not need complex positioning tools or auxiliary means, and only relies on simple manual operation to slowly and smoothly insert the connecting block 202 into the connecting groove. The preliminary fixation is completed when a clear snap sound is heard. This snap-fit connection provides a stable foundation for welding and riveting. Due to the close fit of the connecting groove and the connecting block, the adjacent sub-cores will not easily displace during welding and riveting, ensuring the accurate splicing of the welding groove and the precise alignment of the riveting groove, thereby ensuring the smooth progress of welding and riveting, improving the overall fixing effect, and ensuring the overall quality of the motor core;

[0014] 2. By providing the welding groove, after the twelve sub-cores are preliminarily connected to form the rudiment of the motor core body in a snap-fit manner during the assembly process, the welding grooves on the adjacent sub-cores are spliced into a complete groove. At this time, the welding material is filled into the groove using a welding device, which can achieve a more secure combination of adjacent sub-cores. During the operation of the motor, it can effectively resist the stress caused by electromagnetic force, mechanical vibration, etc., prevent relative displacement or looseness between the sub-cores, and ensure that the motor core always maintains a stable shape and structure. The design of the welding groove optimizes the welding operation process. The inverted trapezoidal welding groove has a larger opening, which facilitates the smooth entry of the welding nozzle or electrode of the welding equipment into the groove, reducing the operation difficulty caused by the narrow welding space. Welders can more easily and accurately fill welding material to each part of the welding groove, improving welding efficiency and quality. For example, during manual arc welding, the larger opening makes the electrode swing more flexible, which is conducive to forming a uniform and dense weld, reducing the probability of welding defects such as incomplete penetration and porosity.

[0015] 3.In summary, the split assembly type DDR motor core, by setting the connection groove, connecting block, welding groove and riveting groove structure, the design of the connecting groove and the connecting block, the twelve sub-cores can be connected in a convenient and fast way, forming the prototype of the motor core body, greatly reducing the assembly difficulty and time cost, the welding groove of the adjacent sub-core is spliced into a complete groove, and the welding equipment is used to fill the welding material, which further enhances the connection strength between the sub-cores, effectively resists the electromagnetic force and mechanical vibration during the operation of the motor, and stabilizes the core structure, the design of the inverted trapezoidal shape also optimizes the welding process, improves the welding quality and efficiency, and the riveting groove further improves the integrity and structural strength of the core after welding, by inserting the rivet into the riveting groove and performing riveting operation, the combination between the sub-cores is more close, and the stability of the motor core under complex working conditions is comprehensively guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a whole structure schematic diagram of the utility model.

[0017] Fig. 2 It is a connecting structure schematic diagram between the cores of the utility model.

[0018] Fig. 3 It is a single core structure schematic diagram of the utility model.

[0019] Figs. 1-3 Middle: 1, motor core body; 2, sub-core; 201, connecting groove; 202, connecting block; 203, welding groove; 204, riveting groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Figs. 1-3 The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0021] Please refer to Figs. 1-3The utility model discloses an embodiment of a kind of split type DDR motor core of assembly, comprising: motor core body 1, motor core body 1 is connected by twelve sub-cores 2, the bending degree of single sub-core 2 is 30 degrees, twelve sub-cores 2 are around 306 degrees complete motor core body 1, sub-core 2 one end is provided with connecting groove 201, the other end of sub-core 2 is fixedly installed with connecting block 202, the connecting block 202 of two adjacent sub-cores 2 is connected with connecting groove 201 in buckle mode, welding groove 203 is equidistantly provided on the outer end surface of sub-core 2, a plurality of riveting grooves 204 are provided on the upper end of sub-core 2, when connecting between sub-cores 2, first prepare 12 sub-cores of same specification, select a sub-core 2 as starting point, place it on installation platform, pick up another sub-core 2, its connecting block 202 is aimed at the connecting groove 201 of first sub-core 2, connecting block 202 is slowly inserted into connecting groove 201 until clear buckle connection sound is heard, indicating that two sub-cores 2 have been initially firmly connected, in this way, buckle connection is sequentially carried out to twelve sub-cores 2, and the rudiment of the motor core body 1 of approximately circular motor core body 1 around 360 degrees is gradually formed, the motor core body 1 of preliminary connection is fixed on installation platform, ensure its position stable, after completing positioning and adjusting, welding equipment is used to carry out welding operation to the welding groove 203 of adjacent sub-cores 2, welding material is filled into welding groove 203, so that adjacent sub-cores 2 are further firmly connected by welding, the stability of overall structure is enhanced, then suitable rivet is prepared, the rivet is inserted into corresponding riveting groove 204 in sub-core 2, riveting tool is used to carry out riveting operation to rivet, sub-cores 2 are tightly combined through riveting, the integrity and structural strength of motor core body 1 are further improved, split type design is adopted, the volume and weight of each sub-core 2 are relatively small, convenient for operator to carry and install operation, compared with integral motor core, split type assembly design has more advantages in the case where installation space is limited, can more flexibly carry out installation operation, when local damage occurs to motor core in use process, due to its split type assembly characteristics, damaged sub-core 2 can be conveniently disassembled for maintenance or replacement, for integral motor core, once local damage occurs, it can need to be replaced as a whole, maintenance cost is high and time-consuming is long, this split type design can significantly reduce the maintenance cost and downtime of motor, improve the availability of equipment, the bending degree of each sub-core 2 is accurately designed as 30 degrees, when assembled into motor core body 1, the overall shape accuracy of core can be better ensured, this accurate shape control helps to optimize the magnetic field distribution of motor, reduce magnetic resistance, improve the efficiency and performance of motor.

[0022] In the embodiment of the utility model, the welding groove 203 is arranged in an inverted trapezoidal shape, the welding groove 203 at the outermost edge of two adjacent sub-cores 2 forms a complete welding groove 203, and the welding groove 203 in the inverted trapezoidal shape has obvious advantages in welding operation compared with other shapes (such as a rectangular shape, a semicircular shape, etc.). When welding is performed, the opening of the inverted trapezoidal shape is larger, which facilitates the welding nozzle or electrode of the welding equipment to smoothly enter the welding groove, thereby reducing the operation difficulty caused by the narrow welding space, and the welder can more easily and accurately fill the welding material to each part of the welding groove, thereby improving the efficiency and accuracy of welding. For example, when manual arc welding is used, the larger opening makes the swing of the electrode more flexible, which is beneficial to forming a uniform weld. The welding groove 203 at the outermost edge of two adjacent sub-cores 2 forms a complete welding groove, which helps to achieve more continuous and firm welding connection. When the welding grooves of the adjacent sub-cores 2 are spliced completely, a continuous weld can be formed during the welding process, thereby avoiding welding defects that may occur due to the discontinuity of the welding groove, such as incomplete penetration, porosity, etc. Moreover, the welding groove in the inverted trapezoidal shape can form a wedge-like structure after the welding material is filled, thereby enhancing the bonding strength of the welding part. After the welding material solidifies in the inverted trapezoidal groove, the contact area between the welding material and the sub-core is larger, which can better transfer stress, so that the strength of the welding part is close to or even exceeds the strength of the sub-core itself, thereby improving the structural integrity and reliability of the entire motor core. During the operation of the motor, the core is subjected to various forces such as electromagnetic force and mechanical vibration. By splicing the welding grooves of the adjacent sub-cores 2 completely and welding in the inverted trapezoidal shape, the connection strength between the sub-cores can be effectively enhanced, so that the entire core is not prone to relative displacement or loosening between the sub-cores when subjected to these external forces. This stable connection method helps to maintain the overall shape accuracy of the motor core and avoids affecting the magnetic field distribution and operating performance of the motor due to the deformation of the core structure.

[0023] Working principle: first prepare 12 same specification sub-core 2, then select a sub-core 2 and place it on the installation platform marked position, as the starting point of assembly, take another sub-core 2, accurately align the connecting block 202 of the first sub-core 2 with the connecting groove 201, slowly and smoothly insert the connecting block 202 into the connecting groove 201 until the clear and obvious buckle connection sound is heard, at this time the two sub-cores 2 are preliminarily connected firmly, according to the above connection mode, sequentially buckle connect the remaining sub-cores 2, in the splicing process, attention should be paid to keep the bending direction and angle of the sub-cores 2 consistent, and ensure that the approximate circular motor core body 1 around 360 degrees is gradually formed, after completing the connection once, the preliminary position adjustment can be made, so that the gap between the adjacent sub-cores is evenly distributed, the preliminarily connected motor core body 1 is fixed on the installation platform using the clamp, ensuring its position stable and not moving or shaking, before welding operation, the welding nozzle or electrode is aligned with the welding groove 203, starting from one end, evenly filling the welding material into the welding groove, in the welding process, the stability of the welding speed should be maintained to ensure the continuity and uniformity of the weld, for example, when using manual arc welding, by controlling the swing amplitude and speed of the electrode, the welding material is filled into the welding groove to form a firm weld, after welding, the weld is inspected to ensure that there is no defect such as missing welding, blowhole and crack, then according to the specification of the rivet groove 204, select the appropriate rivet, insert the rivet into the corresponding rivet groove 204 of the sub-core 2 one by one, ensure that the rivet insertion depth is appropriate and the position is accurate, through riveting, further enhance the bonding strength between the sub-cores 2, improve the integrity and structural stability of the motor core body 1.

Claims

1. A split-assembly type DDR motor core comprising: Motor core body (1), it is characterized by: the motor core body (1) is connected by twelve sub-cores (2) and is composed, the bending degree of single sub-core (2) is 30 degrees, twelve sub-cores (2) are surrounded and are the complete motor core body (1) of 360 degrees.

2. The split-assemblable DDR motor core according to claim 1, characterized in that: One end of the sub-core (2) is provided with a connecting groove (201), and the other end of the sub-core (2) is fixedly provided with a connecting block (202).

3. The split-assemblable DDR motor core according to claim 2, characterized in that: The connecting block (202) and the connecting groove (201) of two adjacent sub-cores (2) are connected in a buckle manner.

4. The split-assemblable DDR motor core according to claim 3, characterized in that: The outer end surface of the sub-core (2) is equidistantly provided with a welding groove (203).

5. The split-assemblable DDR motor core according to claim 4, characterized in that: The welding groove (203) is arranged in an inverted trapezoidal shape, and the welding grooves (203) on the most edge of two adjacent sub-cores (2) form a complete welding groove (203).

6. The split-assemblable DDR motor core according to claim 1, wherein: A plurality of riveting grooves (204) are formed on the upper end of the sub-core (2).

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