Motor rotor core shaft pressing tool

Abstract

A motor rotor iron core shaft pressing tool disclosed by the present invention comprises an equipment frame and a support, a fixing frame is fixedly connected to the center between the equipment frame and the support, an iron core seat is fixedly connected to the center of the fixing frame in an embedded mode, a tray is fixedly connected to the bottom of the iron core seat, a center hole is formed in the center of the interior of the tray, and the iron core seat is fixedly connected to the bottom of the tray. Positioning holes are formed in the peripheral side of the center hole, a motor is fixedly connected to the top of the equipment frame, and a motor driving shaft penetrates through the equipment frame and is fixedly connected with a two-way threaded rod. Through mutual cooperation of the positioning disc, the electromagnet, the positioning rod, the positioning needle and the pressing disc, the iron core seat with universality is constructed, the iron core seat can adapt to positioning of rotor iron cores with hole grooves of different sizes and shapes, when the rotor iron cores are subjected to main shaft pressing work, the iron cores do not need to be customized and replaced according to the specifications of the iron cores, and the working efficiency is improved. And manpower is saved, and the working efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of motor processing equipment technology, specifically to a motor rotor core pressing shaft tooling. Background Technology

[0002] The rotor core of an electric motor is a crucial component of the motor rotor. Its primary function is to serve as part of the motor's magnetic circuit and to house the rotor windings. The rotor core is typically made of stamped and stacked silicon steel sheets, generally 0.5 mm thick. These silicon steel sheets have multiple slots distributed around their outer circumference for housing the rotor windings.

[0003] Currently, when installing the main shaft, most existing motor rotor cores are fixed using a dedicated core holder corresponding to the rotor core. This requires confirming the core specifications before processing and then making a dedicated core holder for replacement before processing can proceed. When pressing rotor cores of different specifications, the core holders are not universal and need to be replaced, which consumes a lot of time and manpower and makes the operation process quite cumbersome.

[0004] Therefore, we propose to design a motor rotor core pressing shaft tooling. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A motor rotor core pressing shaft tooling includes a frame and a support. A fixed frame is fixedly connected at the center of the frame and the support. A core seat is embedded and fixedly connected at the center of the fixed frame. A tray is fixedly connected to the bottom of the core seat. A central hole is opened in the center of the tray. Positioning holes are provided around the central hole. A motor is fixedly connected to the top of the equipment frame. The motor drive shaft passes through the equipment frame and is fixedly connected to a bidirectional threaded rod. An upper positioning plate and a support plate are respectively threaded to the outer walls of both ends of the bidirectional threaded rod. A lower positioning plate is provided on the top of the support plate. A buffer mechanism is provided between the upper and lower positioning plates. A first positioning disk and a second positioning disk are embedded and fixedly connected at the center of the upper and lower positioning plates. A first electromagnet and a second electromagnet are respectively fixedly connected to the side of the first and second positioning disks that are far apart from each other. A first positioning rod and a second positioning rod are respectively provided inside the first and second positioning disks. A base is fixedly connected between the equipment rack and the support near the bottom. An electric push rod is fixedly connected to the center of the top of the base. A positioning pin is fixedly connected to the top of the telescopic end of the electric push rod. A top plate is fixedly connected between the equipment rack and the support near the top. A hydraulic rod is fixedly connected to the center of the top of the top of the top plate. The telescopic end of the hydraulic rod passes through the top plate and is fixedly connected to a pressure plate.

[0007] As a preferred embodiment of the motor rotor core pressing shaft tooling described in this invention, the equipment frame has a sliding groove corresponding to the bidirectional threaded rod inside. The upper positioning plate and the support plate are both fixedly connected to sliders that are threaded to the bidirectional threaded rod. The sliders are slidably connected to the inner wall of the sliding groove. When the bidirectional threaded rod rotates, it is convenient to drive the two sliders to slide in the sliding groove and move closer to each other towards the fixed frame.

[0008] As a preferred embodiment of the motor rotor core pressing shaft tooling described in this invention, the buffer mechanism includes a sleeve fixed to the top of the support plate. A movable rod fixed to the bottom of the lower positioning plate is slidably connected inside the sleeve. A spring is fixedly connected between the top of the sleeve and the bottom of the lower positioning plate. When the support plate rises, it can drive the lower positioning plate to rise. Under the combined action of the spring and the magnetic force of the second electromagnet, the second positioning rod can be inserted into the core to position the core.

[0009] In a preferred embodiment of the motor rotor core pressing shaft tooling described in this invention, an iron rod is fixedly connected to the side of the first positioning rod near the first electromagnet, and the iron rod and the first electromagnet are magnetically attracted to each other. A magnetic column is fixedly connected to the side of the second positioning rod near the second electromagnet, and the magnetic poles of the magnetic column and the side of the second electromagnet that are close to each other are opposite. When the first electromagnet works, it generates a magnetic force that can attract the first positioning rod and make it detach from the positioning of the iron core. When the second electromagnet works, under the action of magnetic repulsion, the second positioning rod can be pushed upward and inserted into the hole groove around the bottom of the iron core.

[0010] As a preferred embodiment of the motor rotor core pressing shaft tooling described in this invention, the outer wall of the positioning pin is arranged in an annular stepped shape, which facilitates the centering and positioning of cores with different inner diameters.

[0011] As a preferred embodiment of the motor rotor core pressing shaft tooling described in this invention, the positioning pin, the pressure plate, and the center of the core seat are located on the same vertical line. After the core is centered, the spindle to be installed is inserted into it, and then pressure is applied by the pressure plate. At this time, the centers of the core, the spindle, and the pressure plate 21 are all located on the same vertical line, which facilitates the quick pressing of the shaft into the core and installation into place, and prevents the spindle from being damaged due to displacement.

[0012] As a preferred embodiment of the motor rotor core pressing shaft tooling described in this invention, a plurality of first positioning rods and second positioning rods are provided. A rubber head is fixedly connected to one end of each of the plurality of first positioning rods and second positioning rods near the core seat. The positioning rods that cannot be inserted into the core will touch the outside of the core at their ends. However, since rubber heads are provided at their ends, the core is less likely to be worn when touched.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention constructs a universal iron core holder by cooperating with a positioning plate, electromagnet, positioning rod, positioning pin, and pressure plate. It can adapt to positioning rotor iron cores of different sizes, specifications, and shapes of slots, so that when the rotor iron core is used for main shaft pressing, there is no need to customize and replace the iron core according to the iron core specifications, which not only saves manpower but also effectively improves work efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the external appearance of a motor rotor core pressing shaft tooling according to the present invention; Figure 2 This is a schematic diagram of the equipment frame installation structure of a motor rotor core pressing shaft tooling according to the present invention; Figure 3 This is a schematic diagram of a buffer mechanism for a motor rotor core pressing shaft tooling according to the present invention; Figure 4 This is a schematic diagram of the first and second positioning discs of a motor rotor core pressing shaft tooling according to the present invention; Figure 5 This is a schematic diagram of the positioning pin structure of a motor rotor core pressing shaft tooling according to the present invention.

[0015] Legend: 1. Equipment frame; 2. Support; 3. Fixing frame; 4. Iron core seat; 5. Tray; 6. Center hole; 7. Positioning hole; 8. Motor; 9. Bidirectional threaded rod; 901. Slide groove; 902. Slider; 10. Upper positioning plate; 11. Support plate; 111. Sleeve; 112. Movable rod; 113. Spring; 12. Lower positioning plate; 13. Buffer mechanism; 14. First positioning plate; 141. First electromagnet; 142. First positioning rod; 15. Second positioning plate; 151. Second electromagnet; 152. Second positioning rod; 153. Magnetic column; 16. Base; 17. Electric push rod; 18. Positioning pin; 19. Top plate; 20. Hydraulic rod; 21. Pressure plate. Detailed Implementation

[0016] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0019] Please see Figure 1-5 The present invention provides a motor rotor core pressing shaft tooling, including a device frame 1 and a support 2. A fixing frame 3 is fixedly connected at the center of the device frame 1 and the support 2. A core seat 4 is embedded and fixedly connected at the center of the fixing frame 3. A tray 5 is fixedly connected to the bottom of the core seat 4. A central hole 6 is opened at the center of the tray 5. Positioning holes 7 are provided around the central hole 6.

[0020] A motor 8 is fixedly connected to the top of the equipment frame 1. The drive shaft of the motor 8 passes through the equipment frame 1 and is fixedly connected to a bidirectional threaded rod 9. The outer walls of both ends of the bidirectional threaded rod 9 are respectively threaded with an upper positioning plate 10 and a support plate 11.

[0021] In this embodiment, the equipment frame 1 has a slide groove 901 inside that corresponds to the bidirectional threaded rod 9. The upper positioning plate 10 and the support plate 11 are both fixedly connected to sliders 902 that are threaded to the bidirectional threaded rod 9. The sliders 902 are slidably connected to the inner wall of the slide groove 901. When the bidirectional threaded rod 9 rotates, it is easy to drive the two sliders 902 to slide in the slide groove 901 and move closer to each other towards the fixed frame 3.

[0022] A lower positioning plate 12 is provided on the top of the support plate 11, and a buffer mechanism 13 is provided between the upper positioning plate 10 and the lower positioning plate 12.

[0023] The buffer mechanism 13 includes a sleeve 111 fixed to the top of the support plate 11. Inside the sleeve 111, there is a movable rod 112 that is fixed to the bottom of the lower positioning plate 12. A spring 113 is fixedly connected between the top of the sleeve 111 and the bottom of the lower positioning plate 12. When the support plate 11 rises, it can drive the lower positioning plate 12 to rise. Under the combined action of the spring 113 and the magnetic force of the second electromagnet 151, the second positioning rod 152 can be inserted into the iron core to position the iron core.

[0024] The upper positioning plate 10 and the lower positioning plate 12 are both embedded and fixedly connected to the center of the interior. The first positioning plate 14 and the second positioning plate 15 are respectively fixedly connected to the side of the first positioning plate 14 and the second positioning plate 15 that are far apart from each other. The first positioning rod 142 and the second positioning rod 152 are respectively provided inside the first positioning plate 14 and the second positioning plate 15.

[0025] In this embodiment, an iron rod is fixedly connected to the side of the first positioning rod 142 near the first electromagnet 141. The iron rod and the first electromagnet 141 are attracted by magnetic force. A magnetic column 153 is fixedly connected to the side of the second positioning rod 152 near the second electromagnet 151. The magnetic poles of the magnetic column 153 and the side of the second electromagnet 151 that are close to each other are opposite. When the first electromagnet 141 works, it generates magnetic force, which can attract the first positioning rod 142 and make it detach from the positioning of the iron core. When the second electromagnet 151 works, under the action of magnetic repulsion, the second positioning rod 152 can be pushed upward and inserted into the hole groove around the bottom of the iron core.

[0026] In this embodiment, there are several first positioning rods 142 and second positioning rods 152. Each of the several first positioning rods 142 and second positioning rods 152 has a rubber head fixedly connected to one end near the iron core seat 4. The positioning rods that cannot be inserted into the iron core will touch the outside of the iron core at their ends. Since there is a rubber head at their ends, it is not easy to cause wear to the iron core when they touch it.

[0027] A base 16 is fixedly connected between the equipment frame 1 and the support 2 near the bottom. An electric push rod 17 is fixedly connected to the center of the top of the base 16. A positioning pin 18 is fixedly connected to the top of the telescopic end of the electric push rod 17.

[0028] The outer wall of the positioning pin 18 is arranged in a ring-shaped stepped pattern, which facilitates the centering and positioning of iron cores with different inner diameters.

[0029] A top plate 19 is fixedly connected between the equipment frame 1 and the support 2 near the top. A hydraulic rod 20 is fixedly connected to the center of the top of the top of the top plate 19. The telescopic end of the hydraulic rod 20 passes through the top plate 19 and is fixedly connected to a pressure plate 21.

[0030] The positioning pin 18, pressure plate 21 and iron core seat 4 are located on the same vertical line. After the iron core is centered, the spindle to be installed is inserted into it and then pressure is applied by the pressure plate 21. At this time, the iron core, spindle and pressure plate 21 are all located on the same vertical line, which makes it easy to press the shaft into the iron core and install it in place quickly, and it is not easy for the spindle to be damaged due to displacement.

[0031] Before use, first connect the motor 8, the first electromagnet 141, the second electromagnet 151, and the electric push rod 17 to the external power supply, and connect the hydraulic rod 20 to the external oil pump.

[0032] In use, the electric push rod 17 drives the positioning pin 18 to rise. Since the outer wall of the positioning pin 18 is stepped and the outer wall of the steps is inclined, the linear design allows the positioning pin 18 to be gradually inserted into the spindle hole of the iron core as it rises, so that the iron core is centered. The main function of the positioning pin 18 here is to ensure that the iron core is located at the center of the iron core seat 4.

[0033] At this point, the first electromagnet 141 is closed, losing its magnetic attraction. The first positioning rod 142 descends, and several extremely thin first positioning rods 142 descend as well, with the outer walls of adjacent first positioning rods 142 fitting together. Since the iron core has grooves on its periphery for easy insertion of wires, as the first positioning rods 142 descend, they can gradually be inserted into the grooves on the periphery of the iron core to be pressed. The first positioning rods 142 that fail to insert into the iron core grooves rest against the end face of the iron core. Because the end face of the positioning rod is equipped with a rubber head, it will not cause wear to the end face of the iron core.

[0034] The second positioning rod 152 located below requires the activation of the second electromagnet 151 during use. Under the action of magnetic repulsion, the second positioning rod 152 can be driven upward to gradually insert into the slot opened on the periphery of the iron core to be pressed.

[0035] After the initial positioning is completed, the start motor 8 drives the bidirectional threaded rod 9 to rotate, which drives the two sliders 902 to slide in the slide groove 901, causing the upper positioning plate 10 and the lower positioning plate 12 to move closer to each other. By inserting the first positioning rod 142 and the second positioning rod 152 into the peripheral holes of the iron core to be pressed, as well as the positioning pin 18, the iron core is positioned at the center of the iron core seat 4.

[0036] At this point, the main shaft is inserted from the top of the iron core into its central shaft hole. Then, the hydraulic rod 20 is activated to gradually apply pressure. The iron core, the main shaft, and the center of the pressure plate 21 are all on the same vertical line, thus pressing the main shaft into the iron core. During the pressing process, the main shaft will touch the positioning pin 18 at the bottom. Therefore, as the pressing operation continues, the electric push rod 17 is activated to drive the positioning pin 18 to reset, allowing the main shaft to be inserted along the iron core shaft hole.

[0037] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tooling for pressing a motor rotor core, comprising a frame (1) and a support (2), characterized in that, A fixed frame (3) is fixedly connected at the center of the equipment rack (1) and the support (2). A core seat (4) is embedded and fixedly connected at the center of the fixed frame (3). A tray (5) is fixedly connected at the bottom of the core seat (4). A central hole (6) is opened at the center of the tray (5). A positioning hole (7) is provided around the central hole (6). A motor (8) is fixedly connected to the top of the equipment frame (1). The drive shaft of the motor (8) passes through the equipment frame (1) and is fixedly connected to a bidirectional threaded rod (9). The outer walls of the two ends of the bidirectional threaded rod (9) are respectively threaded to an upper positioning plate (10) and a support plate (11). A lower positioning plate (12) is provided on the top of the support plate (11). A buffer mechanism (13) is provided between the upper positioning plate (10) and the lower positioning plate (12). A first positioning disk (14) and a second positioning disk (15) are embedded and fixedly connected at the center of the upper positioning plate (10) and the lower positioning plate (12). A first electromagnet (141) and a second electromagnet (151) are fixedly connected to the side of the first positioning disk (14) and the second positioning disk (15) that are far apart from each other. A first positioning rod (142) and a second positioning rod (152) are respectively provided inside the first positioning disk (14) and the second positioning disk (15). A base (16) is fixedly connected between the equipment frame (1) and the support (2) near the bottom. An electric push rod (17) is fixedly connected at the top center of the base (16). A positioning pin (18) is fixedly connected at the top of the telescopic end of the electric push rod (17). A top plate (19) is fixedly connected between the equipment frame (1) and the support (2) near the top. A hydraulic rod (20) is fixedly connected at the top center of the top of the top plate (19). The telescopic end of the hydraulic rod (20) passes through the top plate (19) and is fixedly connected to a pressure plate (21).

2. The motor rotor core pressing shaft tooling according to claim 1, characterized in that, The equipment frame (1) has a groove (901) inside that corresponds to the bidirectional threaded rod (9). The upper positioning plate (10) and the support plate (11) are both fixedly connected to sliders (902) that are threaded to the bidirectional threaded rod (9). The sliders (902) are slidably connected to the inner wall of the groove (901).

3. The motor rotor core pressing shaft tooling according to claim 1, characterized in that, The buffer mechanism (13) includes a sleeve (111) fixed to the top of the support plate (11), and a movable rod (112) fixed to the bottom of the lower positioning plate (12) is slidably connected inside the sleeve (111). A spring (113) is fixedly connected between the top of the sleeve (111) and the bottom of the lower positioning plate (12).

4. The motor rotor core pressing shaft tooling according to claim 1, characterized in that, The first positioning rod (142) is fixedly connected to an iron rod on the side near the first electromagnet (141), and the iron rod and the first electromagnet (141) are attracted by magnetic force. The second positioning rod (152) is fixedly connected to a magnetic column (153) on the side near the second electromagnet (151), and the magnetic poles of the magnetic column (153) and the side of the second electromagnet (151) that are close to each other are opposite.

5. The motor rotor core pressing shaft tooling according to claim 1, characterized in that, The outer wall of the positioning pin (18) is arranged in a ring-shaped stepped pattern.

6. The motor rotor core pressing shaft tooling according to claim 1, characterized in that, The center of the positioning pin (18), the pressure plate (21), and the iron core seat (4) is located on the same vertical line.

7. The motor rotor core pressing shaft tooling according to claim 1, characterized in that, There are several of the first positioning rod (142) and the second positioning rod (152), and a rubber head is fixedly connected to one end of each of the first positioning rod (142) and the second positioning rod (152) near the iron core seat (4).

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