Permanent magnet motor rotor core lamination tool

Abstract

The utility model belongs to the technical field of motor manufacturing, and particularly relates to a permanent magnet motor rotor core lamination tool which comprises a rotor core shaft, a shaft shoulder is integrally formed on the outer surface of the rotor core shaft, and a rotor core composed of a plurality of rotor punching sheets is connected to the rotor core shaft through a flat key. One end face of the rotor core abuts against the end face of the shaft shoulder, the rotor core shaft is sleeved with a clamping spring in a sliding mode, the clamping spring makes contact with the other end face of the rotor core, the rotor core shaft is further provided with a clamping spring groove matched with the clamping spring, and annular pressing plates are symmetrically arranged on the rotor core shaft and located on the two sides of the rotor core in a sliding mode. One sides, deviating from each other, of the two annular pressing plates are detachably connected with sleeve assemblies, the sleeve assemblies are connected with the rotor mandrel in a sliding mode, one ends, deviating from each other, of the two sleeve assemblies are connected with a lathe chuck and a lathe center respectively, and the tool is simple in overall structure, convenient and fast to operate, low in use cost and high in operation safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor manufacturing, and specifically relates to a permanent magnet motor rotor core lamination tooling. Background Art

[0002] The magnetic steel of the surface-mounted permanent magnet motor rotor is located on the surface of the rotor core, so the rotor core is not easy to make into an integral type. Generally, the punching sheets need to be stacked manually and then pressed by a press. Since the surface-mounted permanent magnet motor rotor is generally large in size, a large press is usually required for the pressing operation. Therefore, there are safety hazards in the lifting, placement and pressing operations, and the actual production cost is relatively high. Utility Model Content

[0003] The main technical problem to be solved by the utility model is to provide a permanent magnet motor rotor core lamination tooling with simple overall structure, convenient operation, low use cost and high operation safety.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A permanent magnet motor rotor core lamination tooling comprises a rotor core shaft, the outer surface of the rotor core shaft is integrally formed with a shaft shoulder, a rotor core composed of a plurality of rotor punchings is connected to the rotor core shaft via a flat key, one end face of the rotor core is against the end face of the shaft shoulder, a retaining spring is slidably sleeved on the rotor core shaft, the retaining spring contacts the other end face of the rotor core, a retaining spring groove adapted to the retaining spring is also provided on the rotor core shaft, annular pressure plates are symmetrically slidably arranged on both sides of the rotor core on the rotor core shaft, sleeve assemblies are detachably connected to the opposite sides of the two annular pressure plates, and the sleeve assembly is slidably connected to the rotor core shaft, and the opposite ends of the two sleeve assemblies are respectively connected to a lathe chuck and a lathe center.

[0006] The following is a further optimization of the above technical solution by the utility model:

[0007] The sleeve assembly includes a plurality of detachably connected sleeves.

[0008] Further optimization: the inner diameter and length of the sleeve are various.

[0009] Further optimization: the outer diameter of the annular pressure plate is smaller than the outer diameter of the rotor core.

[0010] Further optimization: elastic anti-skid pads are provided on the side surfaces of the two annular pressure plates close to each other.

[0011] By adopting the above technical scheme, the utility model can reduce the use of large presses in the rotor core lamination compacting operation, save production costs, and at the same time eliminate the safety hazards existing in the original operation using large presses, ensuring safety and efficiency in the production process.

[0012] At the same time, it fully expands the application scope of the factory's existing lathes, improves the utilization rate of the factory's idle equipment, and can adapt to the rotor cores with stacked rotor shafts of different lengths.

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model after the lamination tooling is completed.

[0016] Figure 3 It is a cross-sectional view of an embodiment of the utility model.

[0017] In the figure: 1-rotor core shaft; 2-shaft shoulder; 3-flat key; 4-rotor core; 5-annular pressure plate; 6-sleeve; 7-lathe chuck; 8-lathe center; 9-circlip; 10-circlip groove. DETAILED DESCRIPTION

[0018] like Figure 1-3 As shown, a permanent magnet motor rotor core lamination tooling comprises a rotor shaft 1, the outer surface of the rotor shaft 1 is integrally formed with a shaft shoulder 2, a rotor core 4 composed of a plurality of rotor punchings is connected to the rotor shaft 1 through a flat key 3, one end surface of the rotor core 4 is against the end surface of the shaft shoulder 2, a retaining spring 9 is slidably sleeved on the rotor shaft 1, the retaining spring 9 is in contact with the other end surface of the rotor core 4, a retaining spring groove 10 adapted to the retaining spring 9 is also provided on the rotor shaft 1, annular pressure plates 5 are symmetrically slidably arranged on both sides of the rotor core 4 on the rotor shaft 1, the opposite sides of the two annular pressure plates 5 are detachably connected with a sleeve assembly, and the sleeve assembly is slidably connected to the rotor shaft 1, and the opposite ends of the two sleeve assemblies are respectively connected to a lathe chuck 7 and a lathe center 8.

[0019] First, the rotor punchings are manually installed on the rotor core shaft 1 to form the rotor core 4, and then the retaining ring 9, the annular pressure plate 5, and the sleeve assembly are installed on the rotor core shaft 1 in sequence.

[0020] After the installation is completed, the whole is transported to the lathe, where the end of one sleeve assembly is connected to the lathe chuck 7, and the end of the other sleeve assembly is connected to the lathe center 8. Then the lathe center 8 is moved, and the lathe center 8 drives the corresponding annular pressure plate 5 through the corresponding sleeve assembly to press the rotor core 4, and at the same time drives the retaining spring 9 to move. When the retaining spring 9 is inserted into the retaining spring groove 10, the rotor core 4 is compressed.

[0021] This design is not only easy to operate and safe, but also saves the assembly of large presses and saves production costs. It also expands the application scope of the lathe and improves the utilization rate of factory equipment.

[0022] The outer diameter of the annular pressure plate 5 is smaller than the outer diameter of the rotor core 4 .

[0023] The sleeve assembly includes a plurality of detachably connected sleeves 6 . In this embodiment, adjacent sleeves 6 are threadedly connected.

[0024] The inner diameter and length of the sleeve 6 are various.

[0025] Such a design enables various combinations of sleeve assemblies, thereby being able to adapt to the rotor cores 4 stacked with rotor core shafts 1 of different lengths.

[0026] Elastic anti-skid pads are arranged on the side surfaces of the two annular pressure plates 5 that are close to each other. In this embodiment, the elastic anti-skid pads are made of rubber material.

[0027] Such a design, through the provision of the elastic anti-slip pad, not only increases the friction between the annular pressure plate 5 and the rotor core 4, improves the stability of the extrusion of the annular pressure plate 5, but also effectively avoids wear between the annular pressure plate 5 and the rotor core 4, thereby increasing the service life of the annular pressure plate 5 and avoiding scratches on the surface of the rotor core 4.

[0028] In this embodiment, the lathe is an existing device, and the structure and working principle of the lathe are existing technologies, which can be clearly known to technicians in this field, so they are not described in detail in this embodiment.

[0029] In specific use, the rotor punchings are first manually installed on the rotor core shaft 1 to form the rotor core 4, and then according to the specifications of the rotor core 4 and the position on the rotor core shaft 1, a suitable sleeve 6 is selected to be combined into the required sleeve assembly, and finally the sleeve assembly is connected to the annular pressure plate 5.

[0030] Then the retaining spring 9, the annular pressure plate 5 and the sleeve assembly are installed on the rotor core shaft 1 in sequence. After the installation is completed, the whole is transported to the lathe, one end of the sleeve assembly is connected to the lathe chuck 7, and the other end of the sleeve assembly is connected to the lathe center 8. Then the lathe center 8 is moved, and the lathe center 8 drives the corresponding annular pressure plate 5 through the corresponding sleeve 6 to press the rotor core 4, and at the same time drives the retaining spring 9 to move. When the retaining spring 9 is inserted into the retaining spring groove 10, the rotor core 4 is compressed.

[0031] For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the protection scope of the present invention.

Claims

1. A permanent magnet motor rotor core lamination tooling, comprising a rotor core shaft (1), characterized in that: The outer surface of the rotor core shaft (1) is integrally formed with a shaft shoulder (2), and a rotor core (4) composed of a plurality of rotor punchings is connected to the rotor core shaft (1) via a flat key (3). One end face of the rotor core (4) abuts against the end face of the shaft shoulder (2). A retaining spring (9) is slidably sleeved on the rotor core shaft (1), and the retaining spring (9) contacts the other end face of the rotor core (4). A retaining spring groove (10) adapted to the retaining spring (9) is also provided on the rotor core shaft (1). Annular pressure plates (5) are symmetrically slidably arranged on both sides of the rotor core (4) on the rotor core shaft (1), and sleeve assemblies are detachably connected to the opposite sides of the two annular pressure plates (5), and the sleeve assemblies are slidably connected to the rotor core shaft (1). The opposite ends of the two sleeve assemblies are respectively connected to a lathe chuck (7) and a lathe center (8).

2. A permanent magnet motor rotor core lamination tooling according to claim 1, characterized in that: The sleeve assembly comprises a plurality of detachably connected sleeves (6).

3. A permanent magnet motor rotor core lamination tooling according to claim 2, characterized in that: The inner diameter and length of the sleeve (6) are various.

4. A permanent magnet motor rotor core lamination tooling according to claim 1, characterized in that: The outer diameter of the annular pressure plate (5) is smaller than the outer diameter of the rotor iron core (4).

5. The permanent magnet motor rotor core lamination tooling according to claim 1, characterized in that: Elastic anti-slip pads are provided on the side surfaces of the two annular pressure plates (5) that are close to each other.

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