CN219554785U

CN219554785U - Motor rotor core segmentation oblique pole frock

Info

Publication number: CN219554785U
Application number: CN202320420465.7U
Authority: CN
Inventors: 李军峰; 任鹏; 边喜明; 刘成华
Original assignee: Yantai Aichuang Robot Technology Co ltd
Current assignee: Yantai Aichuang Robot Technology Co ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-08-18
Anticipated expiration: 2033-03-08

Abstract

The utility model relates to motor processing, in particular to a motor rotor core sectional oblique pole tooling, which comprises an upper tooling and a lower tooling, and is characterized in that the upper tooling and the lower tooling are concentric and have circular peripheral surfaces, a circle of graduation lines are etched on the circular peripheral surfaces near the lower end of the upper tooling and the upper end of the lower tooling, and the lower tooling can freely rotate relative to the upper tooling; a cylindrical cavity for accommodating the motor shaft to extend in is formed in the lower tool, a radial screw hole is formed near the upper end of the lower tool, and a positioning screw is in threaded connection with the radial screw hole and can abut against the motor shaft of the cylindrical cavity; the lower end face of the lower tooling downwards extends to form more than 1 positioning columns, and the positioning columns can extend into the lightening holes of the rotor core. Compared with the prior art, the utility model realizes accurate and random segmentation of the rotor core under the condition that the motor shaft does not adopt a key slot. Simple structure, wide applicability, low price and easy realization of process and machining.

Description

Motor rotor core segmentation oblique pole frock

Technical Field

The utility model relates to motor machining, in particular to a motor rotor core sectional oblique pole tool.

Background

The chute or the inclined pole of the permanent magnet motor can effectively reduce the cogging torque of the motor and improve the NVH performance of the motor. The stator chute of the motor affects the coil insertion, so that segmented oblique poles are adopted. But the motor rotor adopts a key slot mode to realize that the sectional inclined poles can influence the dynamic balance of the rotor.

Disclosure of Invention

In order to overcome the technical problems in the prior art, the utility model discloses a motor rotor core sectional oblique pole tooling, which adopts the following technical scheme:

the utility model provides a motor rotor core segmentation oblique pole frock, includes frock and lower frock, and unlike prior art, go up frock and lower frock all have circular peripheral face and concentric, etch out a round graduation line on the circular peripheral face that is close to upper end and lower frock upper end, lower frock can freely rotate for last frock; a cylindrical cavity for accommodating the motor shaft to extend in is formed in the lower tool, a radial screw hole is formed near the upper end of the lower tool, and a positioning screw is in threaded connection with the radial screw hole and can abut against the motor shaft of the cylindrical cavity; the lower end face of the lower tooling downwards extends to form more than 1 positioning columns, and the positioning columns can extend into the lightening holes of the rotor core.

Further, more than 1 permanent magnet is embedded on the lower end face of the lower tool.

Further, a cylindrical bearing chamber is formed in the upper end face of the lower tool, and an axial through hole is formed between the bearing chamber and a cylindrical cavity of the lower tool; the center of the lower end of the upper tool extends downwards to form a round table, the center of the round table is provided with an axial screw hole, the inner ring of the bearing is sleeved on the round table, and a fastening screw penetrates through the bearing pressing plate and is in threaded connection with the axial screw hole; the side wall of the bearing chamber supports the outer race of the bearing.

Further, the outer ring of the bearing is in interference fit with the side wall of the bearing chamber.

Further, the diameter of the axial through hole is larger than the diameter of the bearing pressing plate and smaller than the diameter of the bearing chamber or the cylindrical cavity.

Further, the upper end of the upper tool is fixedly connected with a stud, and the stud is in threaded connection with a machine head of the press; the lower end of the motor shaft is abutted against the base of the press.

Further, the upper end face of the upper tool is inwards recessed to form a shallow groove, so that the upper end face of the upper tool and the upper end face of the lower tool can be in seamless abutting connection.

Further, the positioning posts adapt to the shape and size of the lightening holes.

Compared with the prior art, the utility model realizes accurate and random segmentation of the rotor core under the condition that the motor shaft does not adopt a key slot. Simple structure, wide applicability, low price and easy realization of process and machining.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic structural diagram of an upper tool of the present utility model.

Fig. 2 is a schematic structural diagram of the lower tool of the present utility model.

Fig. 3 is a schematic structural view of a rotor core to be assembled according to the present utility model.

Fig. 4 is a schematic structural view of a motor shaft to be assembled according to the present utility model.

Fig. 5 is a schematic view of the structure of the present utility model when assembled.

Fig. 6 is a cross-sectional view of fig. 5.

Fig. 7 is a partial enlarged view of fig. 5.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or connected internally of two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The motor rotor core sectional oblique pole tooling comprises an upper tooling 1 and a lower tooling 6, wherein the upper tooling 1 and the lower tooling 6 are concentric and have circular peripheral surfaces, a circle of graduation lines are etched on the circular peripheral surfaces close to the lower end of the upper tooling 1 and the upper end of the lower tooling 6, and the lower tooling 6 can freely rotate relative to the upper tooling 1; a cylindrical cavity for accommodating the motor shaft 7 to extend in is formed in the lower tool 6, a radial screw hole is formed near the upper end of the lower tool 6, and a positioning screw 5 is in threaded connection with the radial screw hole and can abut against the motor shaft 7 of the cylindrical cavity; the lower end surface of the lower tooling 6 extends downwards to form 2 opposite positioning columns 9, and the positioning columns 9 can extend into the lightening holes 81 of the rotor core 8. 2 opposite permanent magnets 10 are embedded on the lower end face of the lower tool 6. A cylindrical bearing chamber is formed on the upper end surface of the lower tool 6, and an axial through hole is formed between the bearing chamber and the cylindrical cavity of the lower tool 6; the center of the lower end of the upper tool 1 extends downwards to form a round table 11, an axial screw hole is formed in the center of the round table 11, the inner ring of the bearing 2 is sleeved on the round table 11, and a fastening screw 4 passes through the bearing pressing plate 3 and is in threaded connection with the axial screw hole; the side walls of the bearing chamber support the outer race of the bearing 2. The outer ring of the bearing 2 is in interference fit with the side wall of the bearing chamber. The diameter of the axial through hole is larger than the diameter of the bearing pressing plate 3 and smaller than the diameter of the bearing chamber or the cylindrical cavity. The upper end of the upper tool 1 is fixedly connected with a stud 12, and the stud 12 is in threaded connection with a machine head of a press; the lower end of the motor shaft 7 abuts against the base of the press. The upper end face of the upper tool 1 is inwards recessed to form a shallow groove 13, so that the upper end face of the upper tool 1 is in seamless abutting connection with the upper end face of the lower tool 6. The positioning posts 9 adapt to the shape and size of the lightening holes 81.

The principle is as follows: mounting the upper tool 1 on a press head; the bearing 2 is mounted in the bearing chamber (interference fit) of the lower tool 6, and then the assembled lower tool 6 is mounted on the upper tool 1 by the bearing pressing plate 3 and the fastening screw 4, and the fastening screw 4 is screwed. The rotor core 8 is mounted on the lower fixture 6, and the positioning columns 9 are inserted into the lightening holes 81 of the rotor core (the positioning columns can be changed according to different rotor types), and the rotor core is fixed on the lower fixture 6 due to the fact that the permanent magnets are mounted on the lower fixture 6. A motor shaft 7 is fixed on a press base, a lower tool 6 is rotated to enable a scale 0 degree on the lower tool to be aligned with a scale 0 degree on an upper tool, then a positioning screw 5 is screwed, and a rotor core can be pressed into a rotating shaft by a press; then a second rotor core is installed: the positioning screw 5 is loosened, the lower tool 6 is rotated, the set angle of the inclined pole is aligned with the 0 degree scale of the upper tool 1, the positioning screw 5 is screwed down, then the second layer of rotor core can be pressed in, and the rotor core realizes the sectional inclined pole. Similarly, the rotor core can be continuously installed, and the rotor core can be randomly adjusted according to the desired oblique polar angle.

The beneficial effect of this patent is that realize the accurate random segmentation oblique pole of rotor core under the mode of guaranteeing that the motor shaft does not adopt the keyway. Simple structure, wide applicability, low price and easy realization of process and machining.

The present utility model is not described in detail in the prior art or common general knowledge in the art.

Claims

1. The utility model provides a motor rotor core segmentation oblique pole frock, includes frock (1) and lower frock (6), its characterized in that, go up frock (1) and lower frock (6) all have circular peripheral face and concentric, etch out the round graduation line on the circular peripheral face that is close to upper end and lower frock (6) upper end of going up frock (1), lower frock (6) can freely rotate for last frock (1); a cylindrical cavity into which a motor shaft (7) extends is formed in the lower tool (6), a radial screw hole is formed near the upper end of the lower tool (6), and a positioning screw (5) is in threaded connection with the radial screw hole and can abut against the motor shaft (7) of the cylindrical cavity which extends into the radial screw hole; the lower end face of the lower tool (6) downwards extends to form more than 1 positioning columns (9), and the positioning columns (9) can extend into the weight reducing holes (81) of the rotor core (8).

2. The motor rotor core sectional oblique pole tooling according to claim 1, wherein more than 1 permanent magnet (10) is embedded on the lower end face of the lower tooling (6).

3. The motor rotor core sectional oblique pole tooling according to claim 1, wherein a cylindrical bearing chamber is arranged on the upper end surface of the lower tooling (6), and an axial through hole is arranged between the bearing chamber and the cylindrical cavity of the lower tooling (6); the center of the lower end of the upper tool (1) downwards extends to form a round table (11), an axial screw hole is formed in the center of the round table (11), an inner ring of the bearing (2) is sleeved on the round table (11), and a fastening screw (4) passes through the bearing pressing plate (3) and is in threaded connection with the axial screw hole; the side wall of the bearing chamber supports the outer ring of the bearing (2).

4. A motor rotor core segmented oblique pole tooling according to claim 3, characterized in that the outer ring of the bearing (2) is in interference fit with the side wall of the bearing chamber.

5. A motor rotor core segment beveling tooling according to claim 3, wherein the diameter of the axial through hole is larger than the diameter of the bearing pressing plate (3) and smaller than the diameter of the bearing chamber or cylindrical cavity.

6. The motor rotor core sectional oblique pole tooling according to claim 1, wherein the upper end of the upper tooling (1) is fixedly connected with a stud (12), and the stud (12) is in threaded connection with a machine head of a press; the lower end of the motor shaft (7) is abutted against the base of the press.

7. The motor rotor core sectional oblique pole tooling according to claim 1, wherein the upper end face of the upper tooling (1) is inwards recessed into a shallow groove (13) so that the upper end face of the upper tooling (1) is in seamless butt joint with the upper end face of the lower tooling (6).

8. A motor rotor core segment beveling tool according to claim 1, characterized in that the positioning posts (9) adapt to the shape and size of the lightening holes (81).