A method of producing a rotor

Abstract

The invention provides a rotor production method and belongs to the technical field of motor accessories. The rotor production method comprises the following steps: (1) punching: finishing blanking and notching of a stator piece in one step, wherein a rotor punching piece is located through the inner circle and the notching is conducted through a single process; (2) laminating an iron core: automatically laminating the rotor punching piece notched in the step (1) to form the rotor iron core; (3) pressing a rotor main body: pressing a rotating shaft into a shaft hole of the rotor iron core laminated in the step (2) through a mode combining hot pressing and cold pressing so as to form the rotor main body; (4) immobilizing magnetism for the iron core: inserting a magnet into the iron core laminated in the step (2), spraying a magnetic powder, and pressing an insulated ring; (5) pressing the rotor: pressing the rotating shaft into a front and back claw pole, then polishing front and rear bearing positions, and installing a fan blade. The rotor production method is simple in process, and a single die is adopted in the process, so that the operation is convenient, the maintenance is convenient and reliable, the process capability coefficient is high, the production rate is high, and the rotor production method has the advantages that the cost is low and the competitive force of the enterprise product is improved.

Description

technical field [0001] The invention relates to the technical field of motor accessories, in particular to a rotor production method. Background technique [0002] The motor is a device that converts electrical energy into mechanical energy. It uses a energized coil to generate a magnetic field and acts on the metal frame to form a magnetoelectric force rotation torque. It is generally composed of a stator, a rotor, a bearing, a casing, an end cover, etc., among which The connection between the bearing and the rotor is mostly through mechanical means, pressing the bearing onto the rotor core. [0003] The existing motor rotor is punched into the rotor sheet with a composite mold at one time. Although the surface looks high in productivity and the precision of the workpiece is easy to be guaranteed, there are the following three problems: (1) the mold is large in size and complex in structure, and the processing of the mold The cost is higher and the processing cycle is long...

AI Technical Summary

Problems solved by technology

[0003] The existing motor rotor is punched into the rotor sheet with a composite mold at one time. Although the surface looks high in productivity and the precision of the workpiece is easy to be guaranteed, there are the following three problems: (1) the mold is large in size and complex in structure, and the processing of the mold Higher cost and longer processing cycle

(2) When the mold is used, a large-tonnage punch is required

The workload of assembling and disassembling the mold is also relatively large

(3) After the cutting edge of the die, punch, and punch-and-concave part of the mold becomes blunt or defective, it takes a lot of work to repair or insert blocks, and a large surface grinder or wire cutting machine is required, and mold maintenance is very inconvenient ,Uneconomical

[0006] For example, the Chinese patent application number is: 201210170974.5 discloses a production process of a rotor, the rotor includes a shaft and a lamination assembly, the lamination assembly is symmetrically mounted on the same number of left laminations and right laminations It is formed on the rotating shaft, wherein the innermost left lamination is attached to the innermost right lamination, the center of the left lamination is provided with a rotating shaft perforation 1, and the rotating shaft perforation 1 is provided with a number of locking teeth 1 around the ring. Teeth 1 are inclined toward the outer end of the shaft along the axis of the shaft to form a truncated cone structure. The center of the right lamination is provided with a hole 2 of the shaft. Inclining towards the outer end of the rotating shaft to form a truncated conical structure, characterized in that the production process includes the following steps: 1) stamping the laminations to form holes in the rotating shaft with locking teeth; 2) stamping the locking teeth on the laminations to form an axial truncated conical structure; 3) Select the laminations that constitute one-half of the lamination assembly as the left laminations, and connect the rotating shaft and the left laminations through the press, and at the same time, the left laminations are overlapped with each other, wherein the truncated conical structure on the left laminations The locking teeth are facing the outer end of the rotating shaft; 4) Select half of the laminations that constitute the lamination assembly as the right laminations, and connect the rotating shaft and the right laminations through a press, and at the same time, the right laminations are overlapped with each other, and finally The left lamination at the inner end is attached to the right lamination at the innermost end, wherein the teeth of the truncated conical structure on the right lamination face towards the outer end of the rotating shaft; the production process of the rotor disclosed in this application is firmly connected with the rotating shaft through the left and right laminations, improving the rotor Stability and balance, but the lamination process of this technical solution is more complicated, and the accuracy cannot be guaranteed