Tool for assembling rotor

Abstract

The invention discloses a tool for assembling a rotor, and the tool comprises a magnetic steel insertion mechanism which comprises an insertion pedestal, a dummy shaft is coaxially located on the insertion pedestal, and the dummy shaft is used for enabling a rotor iron core to coaxially pass through and to be located; the clamping assembly is used for clamping the rotor iron core; the press-fitting mechanism comprises a press-fitting base, a motor shaft is axially positioned on the press-fitting base, a lifting assembly is arranged above the press-fitting base, a mounting table is arranged on the lifting assembly, a first mounting groove is formed in the mounting table, a pressing assembly is arranged above the lifting assembly, and a second mounting groove is formed in the pressing assembly. When the pressing assembly drives the clamping assembly to move downwards, the motor shaft abuts against the dummy shaft and sequentially penetrates through the mounting table, the first mounting groove and the clamping assembly so as to push the dummy shaft to be separated from the rotor iron core. The device is simple in structure, convenient to manufacture, low in manufacturing cost and high in magnetic steel inserting and stacking efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a tool for assembling a rotor. Background Art

[0002] A motor is a device that converts or transmits electrical energy based on the law of electromagnetic induction. The most important thing about a motor is that it generates driving torque as a power source for electrical appliances or various machines. According to statistics, the proportion of electric energy consumed by electric motors in my country has exceeded 70% of the total power generation. With the increasing prominence of environmental problems, the promotion and use of high-efficiency electric drives has been adopted by various fields. Improving motor efficiency can provide effective technical support for the smooth realization of energy conservation and emission reduction goals.

[0003] Permanent magnet synchronous motor is a kind of motor, which is widely used due to its low price and high efficiency. When assembling the rotor of the permanent magnet synchronous motor currently on the market, it is generally necessary to insert the magnetic steel into the rotor core first, and then press the multiple rotor cores onto the motor shaft.

[0004] The relevant patent discloses a high-precision multi-segment rotor core shaft pressing device, comprising a fixed plate, a press is fixed on the fixed plate by a bracket, a lower positioning seat is rotatably fixed on the fixed plate, a circular groove for positioning the rotor shaft is provided on the lower positioning seat, a pressure head is provided at the output end of the press, the pressure head has a clearance groove that penetrates downward to make way for the rotor shaft, a lifting plate is provided directly below the pressure head, the lifting plate is fixed above the fixed plate by a guide mechanism, an upper positioning seat is provided on the lifting plate, the upper positioning seat is formed with a through groove that penetrates up and down to make way for the rotor shaft, the upper positioning seat is provided with a plurality of upper positioning pins that are annularly spaced with the through groove as the center, the through groove and the clearance groove are coaxially arranged, and the axis of the upper positioning pin is parallel to the axis of the circular groove.

[0005] The pressing head of this device can only press one rotor core onto the motor shaft at a time. If several rotor cores are to be pressed, multiple press-fitting operations are required, resulting in low pressing efficiency. Summary of the invention

[0006] An object of the present invention is to provide a tool for rotor assembly to solve at least one of the above technical problems.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A tool for rotor assembly, comprising:

[0009] Magnet inserting mechanism, the magnet inserting mechanism includes an inserting base, a dummy shaft is coaxially positioned on the inserting base, and the dummy shaft is used for the rotor core to pass through coaxially and be positioned; the magnet inserting mechanism is provided to position the rotor core, facilitating manual insertion of magnets into the rotor core. The inserting base is used to install the dummy shaft, and the dummy shaft is used to position the rotor core. After the rotor core is positioned, it is convenient to insert the magnets into the magnet slots of the rotor core and stack multiple rotor cores;

[0010] Clamping assembly, used to clamp the rotor core and having a space for the dummy shaft to axially disengage; by providing the clamping assembly, after the magnets are inserted into the rotor core and the stacking is completed, the stacked rotor cores can be clamped together to fix the stacked rotor cores;

[0011] Pressing mechanism, the pressing mechanism includes a pressing base, a motor shaft is axially positioned on the pressing base, a lifting assembly is provided above the pressing base, an installation table is provided on the lifting assembly, a first installation groove for installing the clamping assembly is opened on the installation table, a pressing-down assembly is provided above the lifting assembly. When the pressing-down assembly drives the clamping assembly to move down, the motor shaft abuts against the dummy shaft and sequentially passes through the installation table, the first installation groove, and the clamping assembly to push the dummy shaft away from the rotor core; the pressing mechanism is provided to press the motor shaft into the rotor core to complete the assembly of the rotor; among them, the pressing base is used for axially positioning the motor shaft and for installing the lifting assembly, the lifting assembly is used to drive the installation table to lift, the installation table is used to carry and position the rotor core fixed by the clamping assembly when pressing the motor shaft, and the pressing-down assembly cooperates with a press to press down the rotor core fixed by the clamping assembly to press the motor shaft into the rotor core to complete the assembly of the rotor.

[0012] Through the provided magnet inserting mechanism of the present invention, the positioning of the rotor core can be realized, facilitating manual magnet insertion and the stacked installation of the rotor core. Through the provided clamping assembly, the stacked rotor cores are fixed, facilitating the subsequent pressing-in of the motor shaft. Through the provided pressing mechanism cooperating with a press, the motor shaft can be pressed into the rotor core to complete the assembly of the rotor. This tooling has a simple structure, is easy to manufacture, has a low manufacturing cost, and also has a high magnet inserting and stacking efficiency.

[0013] Specifically, the inserting base includes a seat body, a rotating table is coaxially rotatably connected to the top of the seat body, and the dummy shaft is coaxially positioned on the rotating table; the provided seat body is used to install the rotating table, the provided rotating table is used to install the dummy shaft, and the rotating table can drive the dummy shaft to rotate, thereby driving the rotor core sleeved on the dummy shaft to rotate, and the magnet slot that needs to insert the magnet can be rotated to the side close to the user, improving the efficiency of inserting the magnet.

[0014] Specifically, the clamping assembly includes an upper clamping plate, a lower clamping plate, and several bolts for connecting the upper clamping plate and the lower clamping plate. The rotor core is located between the upper clamping plate and the lower clamping plate, and several of the bolts are arranged around the rotor core. A second installation groove for installing the lower clamping plate is provided at the top of the seat body. The axial positioning of the rotor core is realized by the provided dummy shaft, and the rotor core is clamped from the upper and lower directions by the provided upper clamping plate and lower clamping plate, thereby fixing the stacked rotor core.

[0015] Further, a first through hole is coaxially provided on the upper clamping plate, and a second through hole is coaxially provided on the lower clamping plate, so that the clamping assembly has a space for the dummy shaft to axially disengage.

[0016] Further, multiple layers of the rotor cores are stacked on the dummy shaft to form a rotor core group. The bottom of the upper clamping plate is concavely formed with an upper clamping groove, and the top of the rotor core group is installed in the upper clamping groove. The top of the lower clamping plate is concavely formed with a lower clamping groove, and the bottom of the rotor core group is installed in the lower clamping groove. By providing the upper clamping groove for installing the top of the rotor core group and the lower clamping groove for installing the bottom of the rotor core group, the fixing effect between the stacked rotor cores can be improved.

[0017] Further, a press-fitting top plate is provided above the press-fitting base. The press-fitting top plate is provided with clearance notches corresponding to the lower pressing assembly. The press-fitting top plate is connected to the press-fitting base by several guide posts, and the lifting assembly is slidably connected to the guide posts. The provided guide posts are used for guiding the lifting assembly, and the provided top plate is used for fixing several guide posts together to improve the stability of the guide posts.

[0018] Further, the lifting assembly includes a lifting plate and a cylinder. The guide post passes through the lifting plate and is slidably connected to the lifting plate. The cylinder is installed on the press-fitting base and is connected to the lifting plate. The motor shaft passes through the lifting plate. The provided lifting plate is used for installing the installation table, and the provided cylinder is used for driving the lifting plate to lift.

[0019] Further, the pressing-down assembly includes a lower pressing plate and a pressing-down column. The lower pressing plate is disposed above the lifting assembly, and the pressing-down column is disposed on the bottom surface of the lower pressing plate. A receiving cavity for receiving the dummy shaft is formed on the bottom surface of the pressing-down column. The pressing-down assembly cooperates with a press to squeeze the upper clamping plate so as to press the motor shaft into the rotor core. The lower pressing plate is used to receive the pressure of the press and then transfer the pressure to the upper clamping plate through the pressing-down column. When the motor shaft is pressed into the rotor core, the press head of the press squeezes the lower pressing plate downward, the lower pressing plate squeezes the pressing-down column downward, the pressing-down column squeezes the upper clamping plate downward, and the upper clamping plate squeezes the rotor core downward, driving the rotor core to move downward. The motor shaft is axially positioned on the press-fitting base, the motor shaft is aligned with the shaft hole of the rotor core, the dummy shaft is ejected from the shaft hole of the rotor core, the ejected rotor core enters the receiving cavity of the pressing-down column, and the motor shaft is also pressed into the shaft hole of the rotor core to complete the assembly of the rotor.

[0020] Further, the motor shaft, the first mounting groove, and the pressing-down column are coaxially arranged. After the stacked rotor cores are mounted on the first mounting groove, they are also located on the same axis as the motor shaft and the pressing-down column. The downward pressing of the pressing-down column can press the motor shaft into the rotor core.

[0021] Further, an installation seat is provided on the press-fitting base, and a third mounting groove is formed on the installation seat. The bottom of the motor shaft is installed in the third mounting groove, and the coaxial positioning of the motor shaft on the press-fitting base is realized through the provided installation seat.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) By providing the magnetic steel inserting mechanism, the present invention can realize the positioning of the rotor core, facilitate the manual insertion of magnetic steel and the stacked installation of the rotor core. By providing the clamping assembly for fixing the stacked rotor core, it is convenient for the subsequent pressing-in of the motor shaft. By providing the press-fitting mechanism to cooperate with the press, the motor shaft can be pressed into the rotor core to complete the assembly of the rotor. This tooling has a simple structure, is easy to manufacture, has a low manufacturing cost, and also has a high magnetic steel inserting and stacking efficiency.

[0024] (2) Through the clamping assembly and the dummy shaft, the present invention realizes the positioning and installation that is not connected to the insertion base during the magnetic steel inserting process. While realizing the rapid insertion of magnetic steel, it can transfer the clamping assembly, the dummy shaft, and all the iron cores inserted on the dummy shaft to the press-fitting mechanism in one step without disassembly, and only need to press down once to press all the iron cores onto the motor shaft, improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a tooling for rotor assembly in this embodiment;

[0026] Figure 2 This is the state diagram when the rotor core is stacked and ready to be clamped in this embodiment;

[0027] Figure 3 This is the state diagram when the dummy shaft together with the clamping assembly and the rotor core is pulled out from the insertion base in this embodiment;

[0028] Figure 4 This is the state diagram when the motor shaft is press-fitted in this embodiment;

[0029] Figure 5 This is the schematic structural diagram of the insertion base in this embodiment;

[0030] Figure 6 This is the assembly diagram of the insertion base, the dummy shaft and the lower clamping plate in this embodiment;

[0031] Figure 7 This is the assembly diagram of the motor shaft and the press-fitting base in this embodiment;

[0032] In the figure: 1. Insert magnetic steel mechanism; 11. Insertion base; 111. Base body; 112. Rotating table; 113. Second installation groove; 12. Dummy shaft; 2. Motor shaft; 3. Rotor core; 4. Clamping assembly; 41. Upper clamping plate; 42. Lower clamping plate; 43. Bolt; 44. Upper clamping groove; 45. Lower clamping groove; 5. Press-fitting mechanism; 51. Press-fitting base; 511. Mounting seat; 512. Third installation groove; 52. Lifting assembly; 521. Lifting plate; 522. Cylinder; 53. Mounting table; 54. First installation groove; 55. Lower pressing assembly; 551. Lower pressing plate; 552. Lower pressing column; 56. Press-fitting top plate; 57. Clearance notch; 58. Guide post. Detailed implementation manners

[0033] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0034] As Figure 1-4 shown, this embodiment provides a tooling for rotor assembly, including:

[0035] Magnet inserting mechanism 1, the magnet inserting mechanism 1 includes an inserting base 11, and a dummy shaft 12 is coaxially positioned on the inserting base 11. The dummy shaft 12 is used to enable the rotor core 3 to pass through coaxially and be positioned. In this embodiment, the dummy shaft 12 is vertically arranged. By providing the magnet inserting mechanism 1, it is used to position the rotor core 3, facilitating manual insertion of magnets into the rotor core 3. The inserting base 11 is used to mount the dummy shaft 12, and the dummy shaft 12 is used to position the rotor core 3. After the rotor core 3 is positioned, it is convenient to insert the magnets into the magnet slots of the rotor core 3 and stack multiple rotor cores 3. In the prior art, a shaft hole is usually provided in the middle of the rotor core 3 for installing the motor shaft 2, and axial positioning between the shaft hole and the motor shaft 2 is usually achieved by providing a flat key. For example, a flat key is provided on the rotor core 3, and a keyway is provided on the motor shaft 2. In this embodiment, a keyway adapted to the flat key of the rotor core 3 can also be provided on the dummy shaft 12. When the rotor core 3 is sleeved on the dummy shaft 12, the flat key of the rotor core 3 is inserted into the keyway provided on the dummy shaft 12 to achieve axial positioning between the rotor core 3 and the dummy shaft 12. In the prior art, a guiding portion is usually provided at one end of the motor shaft 2 to guide the insertion of the motor shaft 2 into the rotor core 3, and the keyway provided on the motor shaft 2 is also made larger near the guiding portion to guide the flat key provided on the rotor core 3 to be inserted into the keyway on the motor shaft 2.

[0036] Clamping assembly 4, which is used to clamp the rotor core 3 and has a space for the dummy shaft 12 to axially disengage. By providing the clamping assembly 4, after the magnets are inserted into the rotor core 3 and the stacking is completed, the stacked rotor cores 3 can be clamped so that the stacked rotor cores 3 are fixed together.

[0037] Pressing mechanism 5, the pressing mechanism 5 includes a pressing base 51, and the motor shaft 2 is axially positioned on the pressing base 51. The motor shaft 2 is vertically arranged. An elevating assembly 52 is provided above the pressing base 51, and a mounting table 53 is provided on the elevating assembly 52. A first mounting groove 54 for mounting the clamping assembly 4 is provided on the mounting table 53. Specifically, the first mounting groove 54 is provided on the top surface of the mounting table 53. A pressing-down assembly 55 is provided above the elevating assembly 52. When the pressing-down assembly 55 drives the clamping assembly 4 to move downward, the motor shaft 2 abuts against the dummy shaft 12 and sequentially passes through the mounting table 53, the first mounting groove 54, and the clamping assembly 4 to push the dummy shaft 12 away from the rotor core 3. By providing the pressing mechanism 5, it is used to press the motor shaft 2 into the rotor core 3 to complete the assembly of the rotor. Among them, the pressing base 51 is used to axially position the motor shaft 2 and to mount the elevating assembly 52. The elevating assembly 52 is used to drive the mounting table 53 to move up and down. The mounting table 53 is used to carry and position the rotor core 3 fixed by the clamping assembly 4 when pressing the motor shaft 2. The pressing-down assembly 55 cooperates with a press to press down the rotor core 3 fixed by the clamping assembly 4 to press the motor shaft 2 into the rotor core 3 to complete the assembly of the rotor.

[0038] The positioning of the rotor core 3 can be achieved through the provided magnetic steel inserting mechanism 1 of the present invention, which facilitates the manual insertion of magnetic steel and the stacking and installation of the rotor core 3. The provided clamping assembly 4 is used to fix the stacked rotor core 3, facilitating the subsequent pressing-in of the motor shaft 2. The provided pressing mechanism 5, in cooperation with a press, can press the motor shaft 2 into the rotor core 3 to complete the assembly of the rotor. The structure of this tooling is simple, easy to manufacture, and has a low manufacturing cost. It also has a high efficiency in inserting magnetic steel and stacking. In this embodiment, the press can be a hydraulic press.

[0039] Specifically, as Figure 5 and Figure 6 shown, the inserting base 11 includes a base body 111. A rotating table 112 is coaxially and rotatably connected to the top of the base body 111, and the dummy shaft 12 is coaxially positioned on the rotating table 112. In this embodiment, the rotating table 112 can be rotatably connected to the base body 111 through a bearing. A columnar protrusion can protrude from the top of the rotating table 112. A cavity can be formed inside the dummy shaft 12. The protrusion is inserted into the cavity of the dummy shaft 12, and the dummy shaft 12 is coaxially positioned on the rotating table 112 through the plug-in fit. The provided base body 111 is used to install the rotating table 112, and the provided rotating table 112 is used to install the dummy shaft 12. Moreover, the rotating table 112 can drive the dummy shaft 12 to rotate, thereby driving the rotor core 3 sleeved on the dummy shaft 12 to rotate, and the magnetic steel slots that need to insert magnetic steel can be rotated to the side close to the user, improving the efficiency of inserting magnetic steel.

[0040] Specifically, as Figure 2 and Figure 3 shown, the clamping assembly 4 includes an upper clamping plate 41, a lower clamping plate 42, and several bolts 43 for connecting the upper clamping plate 41 and the lower clamping plate 42. The rotor core 3 is located between the upper clamping plate 41 and the lower clamping plate 42. The several bolts 43 are arranged around the rotor core 3. A second installation groove 113 for installing the lower clamping plate 42 is opened at the top of the base body 111. The axial positioning of the rotor core 3 is achieved through the provided dummy shaft 12. The upper clamping plate 41 and the lower clamping plate 42 clamp the rotor core 3 from the upper and lower directions, thereby fixing the stacked rotor core 3. In this embodiment, the base body 111 is a circular base, and both the upper clamping plate 41 and the lower clamping plate 42 are circular plates. Therefore, the second installation groove 113 is also a circular groove, and the bottom of the lower clamping plate 42 is in plug-in fit with the base body 111 through the second installation groove 113.

[0041] In this embodiment, the installation relationship between the seat body 111 and the lower clamping plate 42 means that by opening a second installation groove 113 at the top of the seat body 111, the lower clamping plate 42 is placed in the second installation groove 113, and the second installation groove 113 is used to restrict the movement of the lower clamping plate 42 in the horizontal direction, but the lower clamping plate 42 can rotate in the second installation groove 113.

[0042] Further, a first through hole is coaxially opened on the upper clamping plate 41, and a second through hole is coaxially opened on the lower clamping plate 42, so that the clamping assembly 4 has a space for the dummy shaft 12 to axially disengage. The dummy shaft 12 passes through the upper clamping plate 41 and the lower clamping plate 42 through the opened first through hole and second through hole.

[0043] Further, a plurality of rotor cores 3 are stacked on the dummy shaft 12 to form a rotor core group. In this embodiment, the rotor core group can be formed by coaxially stacking six rotor cores, as Figure 2 and Figure 3 shown. The bottom of the upper clamping plate 41 is concavely formed with an upper clamping groove 44, and the top of the rotor core group is installed in the upper clamping groove 44. The top of the lower clamping plate 42 is concavely formed with a lower clamping groove 45, and the bottom of the rotor core group is installed in the lower clamping groove 45. By providing the upper clamping groove 44 for installing the top of the rotor core group and the lower clamping groove 45 for installing the bottom of the rotor core group, the fixing effect between the stacked rotor cores 3 can be improved.

[0044] Further, as Figure 4 shown, a press-fitting top plate 56 is provided above the press-fitting base 51. The press-fitting top plate 56 is provided with a clearance notch 57 corresponding to the lower pressing assembly 55. By providing the clearance notch 57, the lower pressing assembly 55 can be lifted and lowered smoothly without being blocked by the press-fitting top plate 56. The press-fitting top plate 56 is connected to the press-fitting base 51 through several guide posts 58. The lifting assembly 52 is slidably connected to the guide posts 58. By providing the guide posts 58 for guiding the lifting assembly 52 and the top plate for fixing the plurality of guide posts 58 together, the stability of the guide posts 58 can be improved. In this embodiment, the guide posts 58 are arranged in the vertical direction, and the number of the guide posts 58 is four. The press-fitting base 51 is a rectangular base, and the four guide posts 58 are respectively distributed at the four corners of the press-fitting base 51.

[0045] Further, as Figure 4As shown in the figure, the lifting assembly 52 includes a lifting plate 521 and a cylinder 522. The guiding column 58 passes through the lifting plate 521 and is slidably connected to the lifting plate 521. The cylinder 522 is installed on the pressing base 51 and connected to the lifting plate 521. The motor shaft 2 passes through the lifting plate 521. The lifting plate 521 is provided for installing the mounting table 53, and the cylinder 522 is provided for driving the lifting plate 521 to lift. In this embodiment, the four corners of the lifting plate 521 are respectively slidably connected to the four guiding columns 58 through sliding sleeves. The four sliding sleeves pass through the four corners of the lifting plate 521 and are fixed to the lifting plate 521. The four sliding sleeves are respectively sleeved on the four guiding columns 58. In this embodiment, the cylinder 522 can be a rodless cylinder 522. The slider of the rodless cylinder 522 is fixed to the lifting plate 521. Two rodless cylinders 522 can be provided, and the two rodless cylinders 522 are respectively located on both sides of the lifting plate 521. When the pressing assembly 55 cooperates with the press to press the rotor core 3 downward, the rodless cylinder 522 can control the lifting plate 521 to move synchronously with the rotor core 3, or the lifting plate 521 can also be pushed downward by the rotor core 3.

[0046] Further, as Figure 4 shown, the pressing assembly 55 includes a lower pressing plate 551 and a pressing column 552. The lower pressing plate 551 is arranged above the lifting assembly 52, and the pressing column 552 is arranged on the bottom surface of the lower pressing plate 551. A receiving cavity for receiving the dummy shaft 12 is formed on the bottom surface of the pressing column 552. The pressing assembly 55 cooperates with the press to squeeze the upper clamping plate 41 to press the motor shaft 2 into the rotor core 3. The lower pressing plate 551 is used to receive the pressure of the press and then transfer the pressure to the upper clamping plate 41 through the pressing column 552. When pressing the motor shaft 2 into the rotor core 3, the press head presses the lower pressing plate 551 downward, the lower pressing plate 551 presses the pressing column 552 downward, the pressing column 552 presses the upper clamping plate 41 downward, and the upper clamping plate 41 presses the rotor core 3 downward, driving the rotor core 3 to move downward. The motor shaft 2 is axially positioned on the pressing base 51, and the motor shaft 2 is aligned with the shaft hole of the rotor core 3. The dummy shaft 12 is ejected from the shaft hole of the rotor core 3, and the ejected rotor core 3 enters the receiving cavity of the pressing column 552. The motor shaft 2 is also pressed into the shaft hole of the rotor core 3 to complete the assembly of the rotor. In this embodiment, when pressing the motor shaft 2 into the rotor core, it is necessary to align the motor shaft 2 with the shaft hole of the rotor core 3 and align the key groove formed on the motor shaft 2 with the flat key of the rotor core 3. In this embodiment, there is an interference fit between the motor shaft 2 and the rotor core 3.

[0047] Further, the motor shaft 2 is coaxially arranged with the first installation groove 54 and the pressing column 552. After the stacked rotor cores 3 are installed on the first installation groove 54, they are also on the same axis as the motor shaft 2 and the pressing column 552. The downward pressing of the pressing column 552 can press the motor shaft 2 into the rotor core 3.

[0048] Furthermore, if Figure 7 As shown, a mounting seat 511 is provided on the press-fit base 51, and a third mounting groove 512 is opened on the mounting seat 511. The bottom of the motor shaft 2 is installed in the third mounting groove 512. The mounting seat 511 is provided to achieve coaxial positioning of the motor shaft 2 on the press-fit base 51.

[0049] Working principle: first install the lower clamping plate 42 into the second installation groove 113 at the top of the base body 111, then insert the dummy shaft 12 onto the rotating table 112, put the rotor core 3 onto the dummy shaft 12, install the first rotor core 3 into the lower clamping groove 45 of the lower clamping plate 42, insert the magnet into the rotor core 3, after the insertion, put the next rotor core 3 onto the dummy shaft 12, insert the magnet into the rotor core 3, until the last rotor core 3 is put onto the dummy shaft 12, and the magnet is inserted, cover the upper clamping plate 41 onto the rotor core 3, install the rotor core 3 at the top into the upper clamping groove 44 of the upper clamping plate 41, use the bolts 43 to fix the upper clamping plate 41 and the lower clamping plate 42, after the fixing is completed, remove the dummy shaft 12 together with the rotor core 3 and the clamping assembly 4 from the insertion base 1 1 is pulled out and installed on the mounting table 53, wherein the dummy shaft 12 is installed on the mounting table 53 together with the rotor core 3 and the clamping assembly 4 by inserting the lower clamping plate 42 into the first mounting groove 54 on the mounting table 53, the rodless cylinder 522 drives the lifting plate 521 to rise, and the motor shaft 2 is inserted into the third mounting groove 512 on the mounting seat 511, the pressure head of the press is aligned with the lower pressing plate 551 and pressed down, and the lower pressing column 552 presses down the upper clamping plate 41, driving the clamping assembly 4, the rotor core 3 and the lifting plate 521 to descend, during the descending process, because the motor shaft 2 is coaxial with the dummy shaft 12, the dummy shaft 12 is supported by the motor shaft 2 during the descending process, and as the rotor core 3 continues to descend, the rotor core 3 slowly sleeves on the motor shaft 2, and the dummy shaft 12 is pushed out by the motor shaft 2, completing the press-fitting of the motor shaft 2.

[0050] It should be noted that although the present invention is disclosed as above by specific embodiments, the above embodiments are not intended to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A tool for rotor assembly, characterized in that: include: An inserting magnetic steel mechanism, the inserting magnetic steel mechanism comprising an inserting base, a dummy shaft being coaxially positioned on the inserting base, the dummy shaft being used to coaxially pass through and position the rotor core; A clamping assembly, used for clamping the rotor core, and having a space for the dummy shaft to be detached in the axial direction; A press-fitting mechanism, the press-fitting mechanism includes a press-fitting base, a motor shaft is axially positioned on the press-fitting base, a lifting assembly is provided above the press-fitting base, a mounting platform is provided on the lifting assembly, a first mounting groove for mounting the clamping assembly is provided on the mounting platform, a pressing assembly is provided above the lifting assembly, when the pressing assembly drives the clamping assembly to move downward, the motor shaft abuts against the dummy shaft, and passes through the mounting platform, the first mounting groove, and the clamping assembly in sequence to push the dummy shaft out of the rotor core.

2. A tool for rotor assembly according to claim 1, characterized in that: The insertion base comprises a base body, the top of the base body is coaxially rotatably connected to a rotating platform, and the dummy shaft is coaxially positioned on the rotating platform.

3. A tool for rotor assembly as claimed in claim 2, characterized in that: The clamping assembly includes an upper clamping plate, a lower clamping plate and several bolts for connecting the upper clamping plate and the lower clamping plate. The rotor core is located between the upper clamping plate and the lower clamping plate, and several bolts are arranged around the rotor core. A second mounting groove for mounting the lower clamping plate is opened on the top of the seat body.

4. A tool for rotor assembly as claimed in claim 3, characterized in that: Multiple layers of the rotor core are stacked on the dummy shaft to form a rotor core group, the bottom of the upper clamping plate is concave to form an upper clamping groove, the top of the rotor core group is installed in the upper clamping groove, the top of the lower clamping plate is concave to form a lower clamping groove, and the bottom of the rotor core group is installed in the lower clamping groove.

5. A tool for rotor assembly according to claim 1, characterized in that: A press-fit top plate is arranged above the press-fit base, and a gap corresponding to the press-down assembly is opened on the press-fit top plate. The press-fit top plate is connected to the press-fit base via a plurality of guide columns, and the lifting assembly is slidably connected to the guide columns.

6. A tool for rotor assembly as claimed in claim 5, characterized in that: The lifting assembly includes a lifting plate and a cylinder, the guide column passes through the lifting plate and is slidably connected to the lifting plate, the cylinder is installed on the press-fit base and is connected to the lifting plate, and the motor shaft passes through the lifting plate.

7. A tool for rotor assembly according to claim 1, characterized in that: The pressing assembly comprises a pressing plate and a pressing column. The pressing plate is arranged above the lifting assembly. The pressing column is arranged on the bottom surface of the pressing plate. The bottom surface of the pressing column is provided with a receiving cavity for receiving the dummy shaft.

8. A tool for rotor assembly according to claim 7, characterized in that: The motor shaft, the first mounting slot and the lower pressure column are all coaxially arranged.

9. A tool for rotor assembly according to claim 1, characterized in that: The press-fit base is provided with a mounting seat, the mounting seat is provided with a third mounting groove, and the bottom of the motor shaft is mounted in the third mounting groove.

10. A tool for rotor assembly according to claim 4, characterized in that: The upper clamping plate is coaxially provided with a first through hole, and the lower clamping plate is coaxially provided with a second through hole, so that the clamping assembly has a space for the dummy shaft to be axially disengaged.

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