Motor rotor skewed pole press fitting tool

Abstract

A motor rotor skewed pole press fitting tool comprises a positioning bottom plate and a lifting press head, a rotatable rotating plate is installed on the positioning bottom plate through a positioning mandrel, the upper end of the positioning mandrel extends upwards to form the rotating plate, an angle indicating arm extends in the radial direction of the circumference of the rotating plate, and the lifting press head is installed on the lifting press head. An angle positioning hole formed in the angle indicating arm and an angle adjusting hole formed in the positioning bottom plate form angle positioning through a first plug pin, and a workpiece fixing hole is eccentrically formed in the rotating plate. The upper end of the lifting pressing head is provided with a connecting rod, and the lower end of the lifting pressing head is provided with a plurality of suction blocks and a plurality of iron core positioning pins which are used for adsorbing and positioning a rotor iron core. According to the press-fitting tool, the rotor iron core is positioned through the suction block and the iron core positioning pin on the lifting pressure head, and the operation is simple and rapid; the skewed pole of the rotor iron core is positioned in the angle adjusting hole on the positioning bottom plate by the angle indicating arm on the rotating plate through the bolt, so that the accurate positioning of the skewed pole angle of the rotor is realized, and the operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor rotor press-fitting technology, and in particular relates to a motor rotor oblique pole press-fitting tool. Background Art

[0002] With the rapid development of new energy vehicles, the drive motor is one of the key components, and its assembly technology innovation has become particularly important. The rotor is an important component in the drive motor. In order to reduce the magnetic resistance loss of the motor and improve the efficiency and performance of the motor, the iron core of the motor rotor is usually pressed by skew pole. Specifically, the motor rotor is divided into multiple sections of rotor cores, and each section of the rotor core is deflected at a certain skew pole angle and pressed together to form a skew pole rotor.

[0003] The publication number of CN 116345808 A, "Motor Rotor Pressing Device and Motor Rotor Pressing Method", discloses a motor rotor oblique pole press-fitting device, and its technical solution is: a positioning mechanism and a pressure mechanism arranged relatively in the vertical direction. The positioning mechanism includes a fixed seat and a rotating seat that are rotatably matched. The rotating seat is used to clamp the rotating shaft of the rotor. A positioning structure is provided between the fixed seat and the rotating seat. The positioning structure is used to rotate and position the rotating seat relative to the fixed seat to at least two preset positions. The angle of rotation of the rotating seat between two adjacent preset positions corresponds to the deflection angle of two adjacent iron cores in the rotor. The pressure mechanism includes a drive assembly and a pressure head connected to the drive assembly. The pressure head is arranged relatively to the rotating seat. The pressure head is used to clamp the end plate and iron core of the rotor. The drive assembly is used to drive the pressure head to move closer to or away from the rotating seat. The motor rotor press-fitting device of this technical solution is only suitable for press-fitting on the motor shaft. When positioning the rotor core on the pressure head, multiple positioning members are inserted one by one for positioning and need to be fixed on the pressure head with locking members. After press-fitting, the locking members need to be loosened, which makes the operation complicated. When positioning the oblique poles of the rotor core, the positioning holes on the fixed seat and the rotating seat can only be tentatively inserted and positioned by the positioning members, which makes the operation inconvenient. Summary of the invention

[0004] The purpose of the utility model is to provide a motor rotor skew pole pressing tool to address the deficiencies of the prior art. The rotor core is positioned by a suction block on a lifting pressure head and an iron core positioning pin, and the operation is simple and quick. The skew pole of the rotor core is positioned in an angle adjustment hole on a positioning bottom plate by an angle indicating arm on a rotating plate through a latch, thereby achieving precise positioning of the rotor skew pole angle and convenient operation.

[0005] The purpose of the utility model is achieved in this way:

[0006] A motor rotor oblique pole pressing tool comprises a positioning base plate and a lifting pressure head, wherein a rotatable rotating plate is mounted on the positioning base plate via a positioning spindle, a rotating plate is extended upward from the upper end of the positioning spindle for positioning the center of a rotor hub, an angle indicating arm is extended radially from the circumference of the rotating plate, the angle indicating arm and the angle adjustment hole provided on the positioning base plate form an angle positioning through a first latch, a workpiece fixing hole is eccentrically provided on the rotating plate for fixing and connecting the rotor hub via bolts; a connecting rod is provided on the upper end of the lifting pressure head, and a plurality of suction blocks and a plurality of iron core positioning pins are provided on the lower end of the lifting pressure head for adsorbing and positioning the rotor iron core.

[0007] The positioning spindle is installed in a first mounting hole provided on the rotating plate and a second mounting hole provided on the positioning base plate.

[0008] The positioning spindle includes a first step, a second step, a third step, and a fourth step.

[0009] The number of the angle adjustment holes is set according to the number of layers of the rotor core.

[0010] The number of the workpiece fixing holes can be single or multiple.

[0011] The rotating plate is provided with an annular groove for accommodating the rotor hub.

[0012] The suction block is provided with two threaded holes and is fixedly connected to the lifting pressure head through bolts, and the lower end of the suction block extends out of the lower end of the lifting pressure head.

[0013] A plurality of weight-reducing holes are arranged on the lifting and lowering pressure head.

[0014] The positioning base plate is provided with a third mounting hole which is fixedly connected to the press body through a second latch.

[0015] The beneficial effects of the utility model are as follows: 1. The core positioning pin arranged on the lifting pressure head of the utility model can position the rotor core circumferentially, and the suction block adsorbs the rotor core, which solves the problem that the rotor core is not positioned during press-fitting and the assembly force is uncontrollable, and the operation is simple and quick; 2. The angle indicating arm of the utility model is positioned in the angle adjustment hole of the positioning base plate by a pin, so as to realize the precise positioning of the rotor skew pole angle, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view of

[0018] Figure 3 This is a structural schematic diagram of the rotating plate of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the positioning column of the utility model;

[0020] Figure 5 It is a structural schematic diagram of an embodiment;

[0021] Figure 6 It is a structural schematic diagram of the positioning base plate of the embodiment;

[0022] Figure 7 Schematic diagram of the rotor hub and rotor core after press-fitting.

[0023] Explanation of the accompanying drawings: positioning base plate 1, second mounting hole 1a, angle adjustment hole 1b, first angle adjustment hole 1b-1, second angle adjustment hole 1b-2, third angle adjustment hole 1b-3, third mounting hole 1c, second latch 1c-1, lifting and lowering head 2, suction block 2a, core positioning pin 2b, connecting rod 2c, rotating plate 3, angle indicating arm 3a, angle positioning hole 3a-1, first latch 3a-2, first mounting hole 3b, annular groove 3c, workpiece fixing hole 3d, positioning spindle 4, first step 4a, second step 4b, third step 4c, fourth step 4d, rotor hub 5, rotor core 6. Implementation

[0024] Further description is given below in conjunction with the accompanying drawings and specific implementation methods.

[0025] See also Figures 1 to 7 , an embodiment of a motor rotor oblique pole pressing tool, comprising a positioning base plate 1 and a lifting and lowering pressure head 2. The positioning base plate 1 is provided with a third mounting hole 1c and is fixedly connected to a press bed through a second latch 1c-1, a rotatable rotating plate 3 is mounted on the positioning base plate 1 through a positioning spindle 4, the positioning spindle 4 is mounted in a first mounting hole 3b provided on the rotating plate 3 and a second mounting hole 1a provided on the positioning base plate 1, and the rotating plate 3 is extended upward from the upper end of the positioning spindle 4 for center positioning of a rotor hub 5; the positioning spindle 4 comprises a first step 4a, a second step 4b, a third step 4c, and a fourth step 4d, the first step 4a is matched with an inner hole of the rotor hub 5, the second step 4b is interference-pressed on the rotating plate 3, the third step 4c is matched with a small clearance of the positioning base plate 1, and the fourth step 4d is matched with a small clearance of the press bed;

[0026] Four workpiece fixing holes 3d are eccentrically arranged on the rotating plate 3, and are fixedly connected to the rotor hub 5 by bolts to prevent the rotor hub 5 from rotating circumferentially; an annular groove 3c is arranged on the rotating plate 3 for placing the rotor hub 5 and controlling the relative distance between the rotor core 6 and the end face of the rotor hub 5; an angle indicating arm 3a is radially extended from the circumference of the rotating plate 3, and an angle positioning hole 3a-1 arranged on the angle indicating arm 3a and an angle adjustment hole 1b arranged on the positioning base plate 1 form an angle positioning through a first latch 3a-2, and the number of the angle adjustment holes 1b is set according to the number of layers of the rotor core 6;

[0027] The lifting head 2 is provided with a plurality of weight-reducing holes, a connecting rod 2c is provided at the upper end of the lifting head 2 for fixing and connecting the press, two suction blocks 2a are provided at the lower end of the lifting head 2 for adsorbing the rotor core 6, two threaded holes are provided on the suction block 2a and fixedly connected to the lifting head 2 by bolts, the lower end of the suction block 2a extends out of the lower end of the lifting head 2, and two core positioning pins 2b are provided at the lower end of the lifting head 2 for circumferential positioning of the rotor core 6;

[0028] The positioning base plate 1, the rotating plate 3, and the lifting head 2 can all be replaced according to the size, number of layers, and skew of the rotor hub 5 and the rotor core 6; the rotor core 6 can be with a magnetic core or without a magnetic core, and can be pressed into a V-shaped skew pole or a straight-line skew pole.

[0029] See also Figures 5 to 7 In this embodiment, the rotor core 6 is magnetic, the number of layers of the rotor core 6 is 3, the slanted poles are rightward, the slanted pole angle is 1°, the number of pole pairs of the rotor core 6 is 12, therefore, the angle between the magnetic steels with the same magnetism is 30°, and the slanted pole angle required for press-fitting is 1°, but since the relative angle between the angle adjustment holes 1b is 1°, there will be mutual interference, therefore, combined with the number of pole pairs of the rotor core 6, the angle between the angle adjustment holes 1b is 31°, and the first angle adjustment hole 1b-1 and the second angle adjustment hole 1b-2 are set with the second mounting hole 1a as the center of the circle. 1b-2, the third angle adjustment hole 1b-3, the angle between the first angle adjustment hole 1b-1 and the second angle adjustment hole 1b-2 is 31°, and the angle between the second angle adjustment hole 1b-2 and the third angle adjustment hole 1b-3 is 31°; since the oblique pole of the rotor core 6 is to the right, when the angle indicating arm 3a is positioned, it is necessary to select the first angle adjustment hole 1b-1, the second angle adjustment hole 1b-2, and the third angle adjustment hole 1b-3 set on the positioning base plate 1 in a clockwise direction to form an angle positioning through the first pin 3a-2.

[0030] The working principle of this embodiment is as follows: first, the rotor hub 5 is inserted into the positioning spindle 4 and fixed on the rotating plate 3 by bolts, and the angle positioning hole 3a-1 on the angle indicating arm 3a and the first angle adjustment hole 1b-1 set on the positioning base plate 1 form an angle positioning through the first latch 3a-2; then, the first section of the rotor core 6 is adsorbed on the lifting and lowering pressure head 2 through the suction block 2a, and the core positioning pin 2b of the lifting and lowering pressure head 2 is inserted into the process hole of the first section of the rotor core 6. The press applies a downward pressure to the lifting and lowering pressure head 2 to press the first section of the rotor core 6 into the rotor hub 5; then, the angle indicating The angle positioning hole 3a-1 on the angle indicating arm 3a and the second angle adjustment hole 1b-2 set on the positioning base plate 1 form an angle positioning through the first pin 3a-2, and the second section of the rotor core 6 repeats the positioning and press-fitting operations of the first section of the rotor core 6; then, the angle positioning hole 3a-1 on the angle indicating arm 3a and the third angle adjustment hole 1b-3 set on the positioning base plate 1 form an angle positioning through the first pin 3a-2, and the third section of the rotor core 6 repeats the positioning and press-fitting operations of the first section of the rotor core 6; finally, loosen the bolts and remove the rotor hub 5 to complete the motor rotor oblique pole press-fitting.

[0031] In this embodiment, the suction block 2a and the core positioning pin 2b solve the problem that the rotor core 6 has no positioning during press-fitting, the assembly force is uncontrollable, and it is easy to cause improper assembly and excessive deviation of the pole angle. The angle adjustment hole 1b is set on the positioning base plate 1 to solve the problem that multiple sets of rotor core 6 stamping dies are required for different pole angles of multiple sections of rotor core 6, thereby avoiding wrong installation and mixed installation and saving costs.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A motor rotor oblique pole press-fitting tool, comprising a positioning base plate (1) and a lifting and lowering pressure head (2), characterized in that: A rotatable rotating plate (3) is mounted on the positioning base plate (1) via a positioning spindle (4); the upper end of the positioning spindle (4) extends upward to form a rotating plate (3) for center positioning of a rotor hub (5); an angle indicating arm (3a) extends radially from the circumference of the rotating plate (3); an angle positioning hole (3a-1) provided on the angle indicating arm (3a) and an angle adjustment hole (1b) provided on the positioning base plate (1) form an angle positioning through a first latch (3a-2); a workpiece fixing hole (3d) is eccentrically provided on the rotating plate (3) for fixing and connecting the rotor hub (5) via bolts; a connecting rod (2c) is provided at the upper end of the lifting and lowering head (2); and a plurality of suction blocks (2a) and a plurality of core positioning pins (2b) are provided at the lower end of the lifting and lowering head (2) for adsorbing and positioning the rotor core (6).

2. The motor rotor skew pole press-fitting tool according to claim 1, characterized in that: The positioning spindle (4) is mounted in a first mounting hole (3b) provided on the rotating plate (3) and a second mounting hole (1a) provided on the positioning base plate (1).

3. The motor rotor skew pole press-fitting tool according to claim 1 or 2, characterized in that: The positioning spindle (4) comprises a first step (4a), a second step (4b), a third step (4c), and a fourth step (4d).

4. The motor rotor skew pole press-fitting tool according to claim 1, characterized in that: The number of the angle adjustment holes (1b) is set according to the number of layers of the rotor core (6).

5. The motor rotor skew pole press-fitting tool according to claim 1, characterized in that: The number of the workpiece fixing hole (3d) may be single or multiple.

6. The motor rotor skew pole press-fitting tool according to claim 1, characterized in that: An annular groove (3c) is provided on the rotating plate (3) for accommodating the rotor hub (5).

7. The motor rotor skew pole press-fitting tool according to claim 1, characterized in that: The suction block (2a) is provided with two threaded holes and is fixedly connected to the lifting and lowering pressure head (2) by means of bolts; the lower end of the suction block (2a) extends out of the lower end of the lifting and lowering pressure head (2).

8. The motor rotor skew pole press-fitting tool according to claim 1, characterized in that: A plurality of weight-reducing holes are arranged on the lifting and lowering pressure head (2).

9. The motor rotor skew pole press-fitting tool according to claim 1, characterized in that: The positioning base plate (1) is provided with a third mounting hole (1c) which is fixedly connected to the press body via a second latch (1c-1).

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