Motor rotor magnetic steel assembling device

Abstract

The invention discloses a magnetic steel assembling device for a motor rotor, and relates to the technical field of motor production and assembly.The magnetic steel assembling device is characterized in that a positioning component is inserted into a positioning groove in a rotor iron core, so that one end of a guide groove directly faces a magnetic steel groove in the rotor iron core; the guide member is provided with a guide groove, the guide groove is used for placing the magnetic steel, the magnetic steel can translate in the guide groove, when the guide member is fixed to the rotor iron core, the guide groove is opposite to the magnetic steel groove, and the push rod member is inserted into the guide groove, so that the magnetic steel is pushed towards the rotor iron core and pushed to a corresponding position in the rotor iron core; the magnetic steel is limited by the inner wall of the guide groove and cannot rotate or deflect, it can be ensured that the magnetic steel is accurately pushed into the magnetic steel groove in the pushing process, the situation that the magnetic steel is broken due to accidental impact can be avoided, and therefore magnetic steel assembling is easily, conveniently and rapidly completed.

Description

Technical Field

[0001] The present invention relates to the technical field of motor production and assembly, and further to a motor rotor magnetic steel assembly device. Background Art

[0002] Permanent magnet synchronous motors use permanent magnets to provide excitation, simplifying the motor structure, eliminating collector rings and brushes that are prone to problems, and improving motor reliability. At the same time, no excitation current is required, there is no excitation loss, and the efficiency and power density of the motor are improved. The permanent magnet synchronous motor rotor uses magnetic steel as the source of the rotor magnetic field, which plays a key role in the operation of the motor.

[0003] Generally, when assembling magnets on a rotor, the assembler will install the magnets into the slots one by one. However, since the silicon steel sheets and the shaft of the rotor core are both magnetic materials, and the magnets have great suction force, the magnets can easily be sucked crooked or sucked onto the rotor surface, and it is difficult to separate them after being sucked. Magnets are made of rare earth materials sintered at high temperatures, and have the characteristics of high strength and high brittleness. It is easy to cause the magnets to shatter during the adsorption process. Safety accidents such as hand injuries are also prone to occur during the adsorption process.

[0004] For those skilled in the art, how to complete the magnetic steel assembly simply and quickly is a technical problem that needs to be solved at present. Summary of the invention

[0005] The core of the present invention is to provide a motor rotor magnetic steel assembly device, which can quickly and conveniently complete the magnetic steel assembly process and improve the safety efficiency of the magnetic steel. The specific scheme is as follows:

[0006] A motor rotor magnetic steel assembly device comprises a guide member, a positioning member, and a push rod member; a guide groove is provided on the guide member, and the guide groove is used to place the magnetic steel, and the magnetic steel can translate in the guide groove;

[0007] The positioning member is arranged on the guide member, and the positioning member is used to be inserted into the positioning groove on the rotor core, so that one end of the guide groove faces the magnetic steel groove on the rotor core;

[0008] The push rod member is used to be inserted into the guide groove to push the magnetic steel toward the rotor core.

[0009] Optionally, at least two guide grooves are provided on the guide member, and each guide groove faces one magnetic steel groove.

[0010] Optionally, the push rod component includes a top block, a push rod, and a handle;

[0011] The push rod is a straight rod, and the two ends of the push rod are respectively fixedly connected to the top block and the handle;

[0012] Alternatively, the push rod is a three-way rod, one end of which is provided with two top blocks, which can extend into the two guide grooves at the same time.

[0013] Optionally, at least two positioning holes are provided on the guide member, and each positioning hole is used to insert one positioning member.

[0014] Optionally, the positioning member comprises a tension screw and a compression screw, the tension screw is inserted into the positioning groove and is tensioned and fixed by nuts at both ends;

[0015] The clamping screw is inserted into the positioning hole, one end of the clamping screw is threadedly sleeved on one end of the tension screw, and the other end is fastened to the guide component through a nut.

[0016] Optionally, the guide groove is a channel with two ends connected, and the push rod member extends from the first end and pushes the magnetic steel out from the second end.

[0017] Optionally, the push rod member can be detached from the guide groove.

[0018] Optionally, the guide groove is a through channel at one end, and a placement groove is provided on the guide member. The placement groove is perpendicular to the guide groove and is used to place the magnetic steel in the guide groove.

[0019] Optionally, a resilient member is provided between the push rod member and the guide member, and the resilient member is used to apply an outward pushing force to the push rod member.

[0020] Optionally, the guide member is arched, and both the inner and outer surfaces are cylindrical.

[0021] The present invention provides a motor rotor magnet assembly device, wherein a positioning member is inserted into a positioning groove on a rotor core, so that one end of the guide groove faces the magnet groove on the rotor core; a guide groove is arranged on the guide member, the guide groove is used to place the magnet, and the magnet can translate in the guide groove, when the guide member is fixed to the rotor core, the guide groove and the magnet groove face each other, a push rod member is inserted into the guide groove, so as to push the magnet toward the rotor core, and push the magnet to a corresponding position in the rotor core, during the pushing process, the magnet is limited by the inner wall of the guide groove and cannot rotate or deflect, during the pushing process, it can be ensured that the magnet is accurately pushed into the magnet groove, and the magnet can be prevented from being broken by accidental impact, thereby completing the magnet assembly simply and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is the front view of the rotor core;

[0024] Figure 2 is a side view of the rotor core;

[0025] Figure 3 It is a front cross-sectional view of the motor rotor magnetic steel assembly device of the present invention cooperating with the rotor core;

[0026] Figure 4 It is a front cross-sectional view of a local structure of the motor rotor magnetic steel assembly device and the rotor core of the present invention;

[0027] Figure 5 is a side view of the guide member;

[0028] Figure 6 for Figure 5 Cross-section view at the middle AA position;

[0029] Figure 7 It is an axonometric view from a first perspective of a first embodiment of the motor rotor magnetic steel assembly device of the present invention;

[0030] Figure 8 It is an axonometric view from a second perspective of the first embodiment of the motor rotor magnetic steel assembly device of the present invention;

[0031] Fig. 9 It is an axonometric view from a first perspective of a second embodiment of the motor rotor magnetic steel assembly device of the present invention;

[0032] Fig.10 It is an axonometric view from a second perspective of a second embodiment of the motor rotor magnetic steel assembly device of the present invention;

[0033] Fig.11 is an axonometric view of a first embodiment of a guide member;

[0034] Fig.12 is an axonometric view of a second embodiment of a guide member;

[0035] Fig.13 This is the axonometric view of the push rod component.

[0036] The figure includes:

[0037] Guide component 1, guide groove 11, positioning hole 12, placement groove 13, positioning component 2, tension screw 21, clamping screw 22, push rod component 3, top block 31, push rod 32, handle 33, rotor core 4, positioning groove 41, magnetic steel groove 42. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the motor rotor magnetic steel assembly device of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] Combination Figure 1 As shown, a front view of a rotor core formed by relatively splicing and fixing a plurality of steel sheets is shown. Figure 2 It is a side view of the rotor core, which can be considered as a structural diagram of a steel sheet. Multiple steel sheets are arranged opposite to each other, and each steel sheet is provided with a magnetic steel slot 42 for placing magnetic steel, and the magnetic steel slots 42 of each magnetic steel are opposite to form a channel; each steel sheet is provided with a positioning slot 41 for positioning, and the positioning slots 41 of each magnetic steel are opposite to form a channel.

[0040] The present invention provides a motor rotor magnetic steel assembly device, combined with Figure 3 , Figure 4 , Figure 5 As shown, the motor rotor magnetic steel assembly device includes a guide member 1, a positioning member 2, and a push rod member 3. The guide member 1, the positioning member 2, and the push rod member 3 are all made of non-ferromagnetic materials. Non-ferromagnetic materials are materials that cannot conduct magnetism. They are characterized by not being able to conduct magnetism and not being magnetically attracted to magnetic steel. The guide member 1 is used as a guide structure. A guide groove 11 is provided on the guide member 1. The guide groove 11 is a slide groove structure. A magnetic steel can be placed in the guide groove 11. The cross-sectional shape and size of the guide groove 11 match the shape and size of the magnetic steel. The guide groove 11 is used to place the magnetic steel. When the magnetic steel is placed in the guide groove 11, the magnetic steel can only move linearly along the guide groove 11, but cannot rotate in the guide groove 11, so that the magnetic steel maintains a specific orientation state and moves toward the rotor core 4.

[0041] It should be noted that the ideal condition for the guide member 1 is to have a sufficient length so that when the magnet is initially placed in the guide slot 11, the magnet will not be magnetically attracted to the rotor core, ensuring that the state of the magnet can be freely adjusted at the position where the magnet is placed without considering the influence of magnetic attraction.

[0042] A positioning member 2 is provided on the guide member 1. The positioning member 2 should have at least two columnar structures protruding from the guide member 1. The positioning member 2 is used to be inserted into the positioning groove 41 on the rotor core 4, so that one end of the guide groove 11 faces the magnetic steel groove 42 on the rotor core 4, and the guide groove 11 and the magnetic steel groove 42 form a channel facing each other end to end. When installing the magnetic steel, the magnetic steel enters the magnetic steel groove 42 from the guide groove 11 without any obstruction in the process.

[0043] The push rod member 3 is used to be inserted into the guide groove 11. The push rod member 3 can translate along the guide groove 11, thereby pushing the magnet toward the rotor core 4. The total length of the push rod member 3 should be greater than the length of the guide groove 11. One end of the push rod member 3 is pushed by the operator or other equipment, and the other end extends into the guide groove 11. When the magnet enters the magnet groove 42, the push rod member 3 can extend into the magnet groove 42, and further push the magnet to translate along the magnet groove 42, and finally make the magnet reach the specified position.

[0044] When using the motor rotor magnet assembly device provided by the present invention, first insert the positioning member 2 into the positioning groove 41 to complete the positioning of the guide member 1. At this time, the guide groove 11 is opposite to the magnet groove 42, and the end of the guide groove 11 is opposite to the end of the magnet groove 42. Put the magnet into the guide groove 11, and the push rod member 3 pushes the magnet to translate along the guide groove 11, so as to push the magnet into the corresponding position of the magnet groove 42. Multiple magnets can be arranged in sequence in the magnet groove 42. By repeating the above process, the placement process of multiple magnets can be completed. With the device of the present invention, the magnet is limited by the guide groove 11 and can only translate, but cannot rotate. The magnet can translate into the magnet groove 42, thereby avoiding the deflection of the magnet and will not collide with the rotor core, so that the magnet assembly is completed simply and quickly.

[0045] Based on the above scheme, combined with Figure 5 As shown, at least two guide grooves 11 are provided on the guide member 1, the two guide grooves 11 are independent of each other, and each guide groove 11 faces a magnetic steel groove 42. Figure 2 As shown, a rotor core is provided with a plurality of magnetic steel slots 42 along the circumferential direction, and two guide slots 11 are provided on the guide member 1. The magnetic steels in the two magnetic steel slots 42 can be assembled by fixing the guide member 1 once, thereby improving the efficiency of magnetic steel installation. Of course, if necessary, a larger number of guide slots 11, such as three or four, can also be provided on a guide member 1.

[0046] The present invention provides two specific structures of the push rod member 3:

[0047] The first one is combined Fig.13As shown, the push rod member 3 includes a top block 31, a push rod 32, and a handle 33; the push rod 32 is a straight rod, and the two ends of the push rod 32 are respectively fixedly connected to the top block 31 and the handle 33, and the top block 31, the push rod 32, and the handle 33 are fixedly connected as a whole. In this structure, one push rod member 3 is used to push a magnetic steel in a guide groove 11.

[0048] The second type is that the push rod 32 of the push rod member 3 is a three-way rod (not shown in the figure), with one rod set at one end for operation and two parallel rods set at one end for pushing, and two top blocks 31 are set, and the two top blocks 31 can be inserted into the two guide grooves 11 at the same time, thereby pushing the two magnets to translate at the same time. In this structure, one push rod member 3 is used to push the magnets in the two guide grooves 11.

[0049] At least two positioning holes 12 are provided on the guide member 1, and each positioning hole 12 is used to insert a positioning member 2. Figure 5 In the illustrated embodiment, three positioning holes 12 are provided on the guide member 1, each positioning hole 12 is used to insert a positioning member 2, and the guide member 1 is positioned by the three positioning members 2 to ensure that the orientation of the guide member 1 is uniquely determined, thereby preventing the position of the guide member 1 from being offset or rotated.

[0050] Specifically, the positioning member 2 includes a tension screw 21 and a compression screw 22. Figure 1 , Figure 3 As shown, the tensioning screw 21 is inserted into the positioning groove 41, and the two ends of the tensioning screw 21 extend out of the positioning groove 41 respectively, and are pulled and fixed by nuts at both ends, so that each steel sheet is aligned in the circumferential direction and tightened in the axial direction.

[0051] The compression screw 22 is inserted into the positioning hole 12, and one end of the compression screw 22 is provided with an internal thread groove, and is threadedly mounted on one end of the tension screw 21, so that the compression screw 22 and the tension screw 21 are connected as a whole. The other end of the compression screw 22 is fastened to the guide member 1 through a nut, so that the guide member 1 and the positioning member 2 are relatively fixedly connected.

[0052] In addition, the positioning member 2 may also adopt other configuration forms. For example, the positioning member 2 adopts a complete screw rod which is inserted into the positioning groove 41 and the positioning hole 12 at the same time. These specific implementation forms should be included in the protection scope of the present invention.

[0053] The present invention provides two specific configurations of guide members 1:

[0054] 1) Combination Figure 7 , Figure 8 As shown, the guide groove 11 is a channel with two ends connected. The push rod member 3 extends into the guide groove 11 from the first end and pushes the magnetic steel out from the second end. The magnetic steel enters the guide groove 11 from the first end.

[0055] In this structure, the push rod member 3 can be removed and separated from the guide groove 11. When placing the magnet, one magnet is placed at a time. When the magnet needs to be reinstalled, the push rod member 3 needs to be pulled out from the first end first, and then a new magnet is placed, and the above-mentioned pushing process is repeated. After the magnet in the magnet groove 42 is placed, the guide member 1 is repositioned and the filling is continued.

[0056] 2) Combination Fig. 9 , Fig.10 As shown, the guide groove 11 is a channel with one end through, the guide groove 11 is through at one end close to the rotor core, and the other end is closed. A placement groove 13 is provided on the guide member 1, and the placement groove 13 is perpendicular to the guide groove 11, and is used to place the magnet into the guide groove 11. The guide groove 11 is located in the middle area of ​​the guide groove 11, and the upper end of the placement groove 13 is connected to the outside, and the lower end is connected to the guide groove 11. When placing the magnet, the magnet is put in from the upper end of the placement groove 13, and the magnet falls into the guide groove 11, and then the push rod member 3 pushes the magnet along the guide groove 11. In this structure, the push rod member 3 does not need to pull the guide groove 11, and only needs to retract the push rod member 3 to the position outside the placement groove 13 to push the new magnet again.

[0057] Furthermore, in this structure, a rebound member can be arranged between the push rod member 3 and the guide member 1, and the rebound member is used to apply an outward thrust to the push rod member 3. When no external force is applied to the push rod member 3, the push rod member 3 moves outward and away from the rotor core without actively pulling back the push rod member 3.

[0058] Combination Figure 5 , Figure 7 , Fig. 9 As shown, the guide member 1 of the present invention is arched, and the inner and outer surfaces of the guide member 1 are both cylindrical surfaces. The cylindrical surface and the outer surface of the rotor core are concentric circles, which can avoid the protrusion A (such as Figure 3 shown).

[0059] Regarding specific materials, the present invention provides a specific solution. The guide component 1 is made of cast aluminum alloy as a whole, and the guide groove 11 and the positioning hole 12 are processed according to the size of the core. The magnetic steel enters the magnetic steel groove 42 of the rotor core 4 through the magnetic steel guide groove 11.

[0060] The clamping screw 22 is made of 1Cr18Ni9Ti material and is non-magnetic. The clamping screw 22 is installed on the iron core through a threaded hole, and the guide member 1 is installed on the rotor iron core 4 through the clamping screw.

[0061] The top block 31 of the push rod component 3 is made of brass, and the push rod 32 and the handle 33 are made of stainless steel.

[0062] The guide member 1 is made of cast aluminum alloy, which is light and easy to move and install. The guide member 1 is fan-shaped, with 3 holes on the guide rail for tightening bolts for installation, and a limiter with a length of 25 mm is set at the end for positioning the guide rail, meeting the installation accuracy requirements.

[0063] Considering the overall installation condition of the magnetic steel, the guide member 1 is provided with two guide grooves 11, which prevent the guide rail from interfering with the rotor core 4 body during installation, and the position of the guide groove 11 is consistent with the magnetic steel groove 42 of the rotor core 4. The two grooves can simultaneously meet the requirements of the magnetic steel filling in the two grooves, thereby improving the working efficiency.

[0064] The motor rotor magnetic steel assembly device of the present invention is composed of three main components, namely, a guide component 1, a positioning component 2, and a push rod component 3, which can complete the entire rotor magnetic steel assembly process; the device as a whole is composed of non-ferromagnetic materials, and magnetic steel attraction will not occur.

[0065] The guide component 1 is made of cast aluminum alloy, has low weight and is easy to disassemble and assemble. Three holes are opened on the guide component 1 for tightening bolts to install, and a limiter with a length of 25 mm is set at the end for positioning the guide rail, which meets the installation accuracy requirements. The overall structure of the device is simple, the manufacturing cost is low, the device is safe and reliable, and the magnetic steel and operators are effectively protected to meet the safety requirements.

[0066] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motor rotor magnetic steel assembly device, characterized in that: It comprises a guide member (1), a positioning member (2), and a push rod member (3); a guide groove (11) is provided on the guide member (1), and a magnetic steel is placed in the guide groove (11), and the magnetic steel can translate in the guide groove (11); The positioning member (2) is arranged on the guide member (1), and the positioning member (2) is used to be inserted into the positioning groove (41) on the rotor core (4), so that one end of the guide groove (11) faces the magnetic steel groove (42) on the rotor core (4); The push rod member (3) is used to be inserted into the guide groove (11) so as to push the magnetic steel toward the rotor core (4).

2. The motor rotor magnetic steel assembly device according to claim 1, characterized in that: At least two guide grooves (11) are provided on the guide component (1), and each guide groove (11) faces a magnetic steel groove (42).

3. The motor rotor magnetic steel assembly device according to claim 2, characterized in that: The push rod component (3) comprises a top block (31), a push rod (32), and a handle (33); The push rod (32) is a straight rod, and two ends of the push rod (32) are respectively fixedly connected to the top block (31) and the handle (33); Alternatively, the push rod (32) is a three-way rod, one end of which is provided with two top blocks (31) and can extend into two guide grooves (11) at the same time.

4. The motor rotor magnetic steel assembly device according to claim 1, characterized in that: At least two positioning holes (12) are provided on the guide component (1), and each positioning hole (12) is used for inserting one positioning component (2).

5. The motor rotor magnetic steel assembly device according to claim 4, characterized in that: The positioning member (2) comprises a tensioning screw (21) and a pressing screw (22); the tensioning screw (21) is inserted into the positioning groove (41) and is tensioned and fixed by nuts at both ends; The clamping screw (22) is inserted into the positioning hole (12), one end of the clamping screw (22) is threadedly sleeved on one end of the tension screw (21), and the other end is fastened to the guide component (1) via a nut.

6. The motor rotor magnetic steel assembly device according to claim 1, characterized in that: The guide groove (11) is a channel with two ends connected, and the push rod component (3) extends into the channel from the first end and pushes the magnetic steel out from the second end.

7. The motor rotor magnetic steel assembly device according to claim 6, characterized in that: The push rod member (3) can be removed and separated from the guide groove (11).

8. The motor rotor magnetic steel assembly device according to claim 1, characterized in that: The guide groove (11) is a channel with one end being through, and a placement groove (13) is provided on the guide component (1), wherein the placement groove (13) is perpendicular to the guide groove (11) and is used for placing a magnetic steel in the guide groove (11).

9. The motor rotor magnetic steel assembly device according to claim 8, characterized in that: A resilient member is provided between the push rod member (3) and the guide member (1), and the resilient member is used to apply an outward thrust to the push rod member (3).

10. The motor rotor magnetic steel assembly device according to claim 1, characterized in that: The guide component (1) is arched, and both the inner and outer surfaces are cylindrical surfaces.

Images