Rotor core stacking tool

Abstract

The application provides a rotor core stacking tool and relates to the technical field of motors. The outer expansion telescopic part is arranged on the side surface of the main shaft part. The first moving part and the second moving part are connected through the sliding connection groove. The relative sliding direction of the sliding connection groove and the second moving part is inclined along the extension direction of the main shaft part and relative to the axial direction of the main shaft part. The first moving part is moved along the axial direction of the main shaft part. The sliding connection groove is arranged in a matched manner. The second moving part is driven to move along the radial direction of the main shaft part and in the direction away from the main shaft part. The corresponding outer expansion telescopic part is extended relative to the main shaft part. The outer expansion telescopic part is moved to the outer side and abuts against the inner ring edge of the rotor punching sheet. The rotor punching sheet is stacked in a neat manner. Different sizes of main shaft parts are not needed for different sizes of rotor punching sheets. The number of production equipment is reduced, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and more specifically, to a rotor core stacking fixture. Background Technology

[0002] In motor manufacturing, rotor core stacking is a key process that directly affects the motor's performance, efficiency, and reliability. The rotor laminations are stacked one by one on the main shaft of the rotor core mounting jig in sequence. After each stack reaches a certain height, the rotor laminations need to be neatly straightened to ensure that the lamination holes are aligned and to avoid cumulative errors, so as to achieve vertical and neat rotor core slots.

[0003] Currently, when stacking rotor laminations on rotor core mounting jigs, different outer diameter spindles are required to match the inner ring dimensions of the rotor laminations corresponding to different rotor core sizes, resulting in high production costs. Summary of the Invention

[0004] The problem solved by this invention is: how to stack rotor laminations of different sizes to reduce production costs.

[0005] To address the above problems, the present invention provides a rotor core stacking fixture, comprising: Base components; The spindle component is mounted on the base component and has an internal cavity; Multiple outwardly expanding and telescopic components are disposed on the outer side of the main shaft component, and the multiple outwardly expanding and telescopic components are spaced apart along the circumference of the main shaft component; A first moving component is disposed within the cavity of the spindle component; The second moving component is correspondingly connected to the outward expansion and telescopic component and is slidably connected to the first moving component. The moving direction of the second moving component is perpendicular to the axial direction of the main shaft component. The first moving component is provided with a plurality of sliding connecting grooves, and the second moving component is slidably connected to the first moving component through the corresponding sliding connecting grooves. The relative sliding direction of the sliding connecting grooves and the second moving component is along the axial direction of the main shaft component and inclined relative to the axial direction of the main shaft component. The first moving component moves along the axial direction of the main shaft component and drives the second moving component to move along the radial direction of the main shaft component away from the main shaft component, so that the corresponding outward expansion and telescopic component extends relative to the main shaft component.

[0006] Optionally, the first moving component includes: a rod, the extension direction and the moving direction of the rod being parallel to the axial direction of the main shaft component; a plurality of pistons, spaced apart and sleeved on the rod; wherein, the outer peripheral wall of the piston is provided with the sliding connecting groove, one end of the sliding connecting groove penetrating the top surface of the piston, and at least a portion of the second moving component is disposed within the sliding connecting groove.

[0007] Optionally, the sliding connection groove includes a first sub-groove and a second sub-groove that are connected together, the first sub-groove being disposed on the side of the second sub-groove closer to the rod; wherein the width of the first sub-groove is greater than the width of the second sub-groove, and a portion of the second moving component slides in cooperation with the first sub-groove.

[0008] Optionally, the sliding connection groove further includes a third sub-groove, which is connected to the first sub-groove and is located on the side of the first sub-groove near the rod; wherein the width of the first sub-groove is greater than the width of the third sub-groove, and a portion of the second moving component slides in cooperation with the third sub-groove.

[0009] Optionally, the outer peripheral wall of the piston is further provided with a plurality of first grooves; wherein, the first groove is located at the bottom end of the sliding connection groove and is connected to the sliding connection groove, and the depth of the first groove is greater than the depth of the sliding connection groove.

[0010] Optionally, the extension direction of the outward expansion and telescopic component is parallel to the axial direction of the main shaft component, and the second moving component includes a plurality of base claws arranged sequentially at intervals along the extension direction of the outward expansion and telescopic component; each piston is provided with a plurality of sliding connecting grooves at intervals along its circumference; each outward expansion and telescopic component slides with the sliding connecting grooves of the plurality of pistons through the plurality of base claws corresponding to the second moving component, and the plurality of sliding connecting grooves corresponding to the same outward expansion and telescopic component are arranged axially upward along the main shaft component.

[0011] Optionally, the rotor core stacking fixture further includes at least one positioning key; wherein the positioning key is connected to the surface of the outward expansion and telescopic component away from the main shaft component, and the shape of the positioning key corresponds to the shape of the positioning groove of the rotor lamination to be stacked.

[0012] Optionally, the surface of the outwardly expanding telescopic component away from the main shaft component is an arc surface.

[0013] Optionally, the first moving component is further provided with a plurality of first avoidance chamfers, which are located at one end of the sliding connecting groove and are used to avoid the corresponding second moving component.

[0014] Optionally, the rotor core stacking fixture further includes a power component, which is connected to the first moving component and is used to drive the first moving component to move.

[0015] The beneficial effects of this invention are as follows: By setting the outward expansion and telescopic component on the side of the main shaft component, the first moving component and the second moving component are slidably connected by a sliding connecting groove. The relative sliding direction of the sliding connecting groove and the second moving component is along the axial direction of the main shaft component and inclined relative to the axial direction of the main shaft component. By the reciprocating motion of the first moving component in the vertical direction, in conjunction with the inclined sliding connecting groove, the vertical movement of the first moving component is converted into the horizontal movement of the second moving component, thereby driving the second moving component and the outward expansion and telescopic component to reciprocate in the horizontal direction. When the rotor laminations are stacked to a certain height on the main shaft component of the rotor core stacking fixture, the outward expansion and telescopic component moves outward to abut against the inner ring edge of the rotor laminations to neatly stack the rotor laminations. After the rotor core stacking is completed, the outward expansion and telescopic component is brought close to the side of the main shaft component, and the outward expansion and telescopic component retracts inward to separate from the rotor laminations, making it easy to remove the rotor core after stacking. For rotor laminations of different sizes, it is not necessary to use multiple main shaft components with different outer diameters, reducing the number of production equipment and lowering production costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the rotor core stacking fixture in an embodiment of the present invention; Figure 2 This is a schematic diagram of the stacking operation of the rotor core stacking fixture in an embodiment of the present invention; Figure 3 , Figure 4 This is a partial top view schematic diagram of the stacking operation of the rotor core stacking fixture in an embodiment of the present invention; Figure 5 for Figure 1 A schematic diagram of a partial cross-section along the C1-C2 axis; Figure 6 for Figure 5 A magnified view of a portion of region D in the middle; Figure 7 for Figure 5 Another magnified view of region D in the middle; Figure 8 This is a partial structural diagram of the rotor core stacking fixture in an embodiment of the present invention; Figure 9 for Figure 8 A magnified view of a portion of region E in the middle; Figure 10 This is a partial structural diagram of the piston of the first moving component in an embodiment of the present invention; Figure 11This is a partial structural schematic diagram of the piston of the first moving component in an embodiment of the present invention from another perspective.

[0017] Explanation of reference numerals in the attached figures: Rotor core stacking fixture 10; base component 100; hydraulic press platform 110; main base 120; main shaft base 130; main shaft component 200; outward expansion and telescopic component 310; positioning key 320; first moving component 400; rod body 410; piston 420; first clearance chamfer 421; first groove 422; second moving component 500; base claw 510; oil storage tank 511; sliding connection groove 600; first inner wall 601; second inner wall 602; third inner wall 603; fourth inner wall 604; first sub-groove 610; second sub-groove 620; third sub-groove 630; power component 700; hydraulic power pump station 710; hydraulic pipe 720; oil cylinder 730; dustproof component 800; rotor laminations 20. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0019] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing upward and the negative direction representing downward. The X-axis represents the horizontal direction and is designated as front and back, with the positive direction of the X-axis representing the front and the negative direction representing the back. The Y-axis represents the left and right position, with the positive direction of the Y-axis representing the left and the negative direction representing the right. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0020] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0021] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0022] In related technologies, when stacking rotor laminations on a rotor core mounting jig, different outer diameter spindles are required to match the different inner diameters of the rotor laminations corresponding to different rotor core sizes. Multiple specifications of spindles and corresponding equipment occupy workshop space, leading to high production costs. Taking copper bar rotor cores as an example, when mounting copper bar rotor cores, spindles with different outer diameters of rotor mounting jigs must be matched according to the inner diameter of the rotor laminations. The average tolerance of the outer diameter of the rotor mounting jig spindle is generally ±0.15 mm, and the tolerance of the inner diameter of the rotor laminations is generally ±0.08 mm. During the lamination stacking process, the gap between the laminations and the spindle of the mounting jig can reach 0.23 mm, easily causing excessive runout of the copper bar rotor outer diameter and unqualified slot uniformity. Excessive runout of the rotor core outer diameter needs to be addressed by machining the rotor outer diameter, which can easily lead to problems such as narrowing of the ventilation channels and outward expansion of the rotor core teeth. Unqualified slot uniformity requires repair of the slots, resulting in increased manufacturing costs. Increasing the outer diameter of the rotor mounting shaft to reduce the gap between the laminations and the mounting pad would make subsequent tire removal extremely difficult. Therefore, how to stack rotor laminations of different sizes to reduce production costs is a technical problem that engineers urgently need to solve.

[0023] To address the problems existing in the aforementioned related technologies, the present invention provides a rotor core stacking fixture 10. By setting an outwardly expanding telescopic component 310 on the side of the main shaft component 200, a first moving component 400 and a second moving component 500 are slidably connected via a sliding connecting groove 600. The relative sliding direction of the sliding connecting groove 600 and the second moving component 500 is along the axial direction of the main shaft component 200 and inclined relative to the axial direction of the main shaft component 200. When the rotor laminations 20 are stacked to a certain height, the first moving component reciprocates in the vertical direction. Combined with the inclined sliding connecting groove, the vertical movement of the first moving component 400 is converted into the movement of the second moving component 500. The horizontal movement of the second moving part 500 drives the second moving part 500 and the outward expansion and telescopic part 310 to reciprocate in the horizontal direction. The outward expansion and telescopic part 310 moves outward to abut against the inner edge of the rotor lamination, so as to stack the rotor lamination neatly. After the rotor core is stacked, the outward expansion and telescopic part 310 is brought close to the side of the main shaft part 200, and the rotor core can be taken out. This makes the runout of the outer circle of the rotor core after stacking meet the design requirements, improves the uniformity of the rotor core slot shape, and at the same time, it is not necessary to use multiple main shaft parts 200 of different sizes for rotor laminations 20 of different sizes, reducing the number of production equipment and reducing production costs.

[0024] Combination Figures 1 to 11As shown, a rotor core stacking fixture 10 includes a base component 100, a main shaft component 200 disposed on the base component 100 and having an internal cavity, an outwardly expanding and contracting component 310 disposed on the outer side of the main shaft component 200, a first moving component 400 disposed within the cavity of the main shaft component 200, and a second moving component 500 correspondingly connected to the outwardly expanding and contracting component 310. A plurality of outwardly expanding and contracting components 310 are spaced apart circumferentially along the main shaft component 200. The moving direction of the first moving component 400 is parallel to the extending direction of the main shaft component 200. The first moving component 400 is used for... The first moving component 400 is provided with a plurality of sliding connecting grooves 600 for axial movement along the main spindle component 200. The second moving component 500 is slidably connected to the first moving component 400 through the corresponding sliding connecting groove 600. The relative sliding direction between the sliding connecting groove 600 and the second moving component 500 is along the axial direction of the main spindle component 200 and inclined relative to the axial direction of the main spindle component 200. That is, while the first moving component 400 moves along the extension direction of the main spindle component 200, the second moving component 500 is also moved along the radial direction of the main spindle component 200 through the sliding connecting groove 600. When the first moving component 400 moves along the axial direction of the main shaft component 200, that is, when the first moving component 400 slides relative to the second moving component 500, the second moving component 500 can be driven to move radially away from the main shaft component 200, so that the corresponding outward expansion and telescopic component 310 extends relative to the main shaft component 200. Under the drive of the first moving component 400, the multiple outward expansion and telescopic components 310 each extend radially relative to the main shaft component 200, so that the outer periphery enclosed by the multiple outward expansion and telescopic components 310 increases, thereby achieving an outward expansion effect.

[0025] For ease of description, the extension direction of the spindle component 200 is also the axial direction of the spindle component 200, both being vertical and extending along the Z-axis. The movement direction of the outward expansion and telescopic component 310 is horizontal, with the horizontal plane formed by the X-axis and Y-axis being parallel to the horizontal plane. In this text, "iron core" can also be replaced by "iron core," which are different terms used by those skilled in the art to refer to the iron core.

[0026] Please refer to the details. Figure 3 , Figure 6By placing the outwardly expanding telescopic component 310 on the side of the main shaft component 200, before stacking the rotor laminations 20 on the main shaft component 200 of the rotor core stacking fixture 10, the outwardly expanding telescopic component 310 can be close to the side of the main shaft component 200, facilitating the sequential placement of the rotor laminations 20 onto the main shaft component 200 to achieve stacking. The rotor laminations 20 are stacked on the main shaft component 200 of the rotor core stacking fixture 10. When the stack reaches a certain height, please refer to [the relevant documentation]. Figure 4 , Figure 7 The outward expansion and telescopic component 310 moves outward to abut the inner edge of the rotor lamination 20, so as to neatly stack the rotor lamination 20. Then, the outward expansion and telescopic component 310 is brought close to the side of the main shaft component 200, and the laminations are stacked. The above shrinking, stacking, and outward expansion actions are repeated until the entire rotor core is stacked. Then, the outward expansion and telescopic component 310 is brought close to the side of the main shaft component 200, and then the outward expansion and telescopic component 310 is retracted inward to separate from the rotor lamination 20, so as to facilitate the removal of the rotor core after stacking.

[0027] The first moving part 400 and the second moving part 500 are slidably connected via a sliding connecting groove 600. (See details below.) Figure 6 , Figure 7 , Figures 9 to 11 Specifically, the sliding connection groove 600 can be configured as a groove structure that extends along the extension direction of the main shaft component 200 and is inclined relative to the extension direction of the main shaft component 200. This allows the relative sliding direction of the sliding connection groove 600 and the second moving component 500 to be inclined relative to the main shaft component 200. The extension direction of the first moving component 400 is parallel to the moving direction of the first moving component 400, and the extension direction of the first moving component 400 is parallel to the main shaft component 200. The first moving component 400 is vertically... The reciprocating motion in the direction, combined with the inclined sliding connecting groove 600, converts the vertical movement of the first moving part 400 into the horizontal movement of the second moving part 500. This drives the second moving part 500 and the outward expansion and telescopic part 310 to reciprocate horizontally. When the outward expansion and telescopic part 310 expands outward, it abuts against the inner edge of the rotor laminations 20 of different sizes, achieving neat stacking. When the outward expansion and telescopic part 310 retracts inward, it separates from the rotor laminations 20, allowing the rotor core to be removed after stacking. For ease of understanding, referring to the accompanying drawings, the outward expansion of the outward expansion and telescopic part 310 refers to its movement away from the main shaft part 200, and the inward retraction of the outward expansion and telescopic part 310 refers to its movement towards the main shaft part 200.

[0028] For rotor laminations 20 with different inner hole sizes, the length of the second moving part 500 can be adjusted for adaptation, or the thickness of the outward expansion and contraction part 310 can be adjusted for adaptation. On the one hand, the length of the second moving part 500 can be increased to increase the telescopic movement distance of the outward expansion and contraction part 310, facilitating the contact between the outward expansion and contraction part 310 and the inner ring edge of the rotor lamination 20. On the other hand, the thickness of the outward expansion and contraction part 310 can also be increased to facilitate the contact between the outward expansion and contraction part 310 and the inner ring edge of the rotor lamination 20. The solution of this application facilitates the neat stacking of rotor laminations 20 of various sizes and the convenient removal of the rotor core after stacking. For rotor laminations 20 of different sizes, it is not necessary to use multiple main shaft parts 200 with different outer diameters, reducing the number of production equipment and lowering production costs.

[0029] In some embodiments, please refer to the following for details. Figures 5 to 11 The first moving component 400 includes a rod 410 and a plurality of pistons 420. The extending direction of the rod 410 is parallel to the axial direction of the main shaft component 200, and the moving direction of the rod 410 is parallel to the axial direction of the main shaft component 200. The plurality of pistons 420 are spaced apart and sleeved on the rod 410. The outer peripheral wall of the piston 420 is provided with a sliding connecting groove 600. One end of the sliding connecting groove 600 penetrates the top surface and the side surface of the piston 420. At least a portion of the second moving component 500 is disposed within the sliding connecting groove 600.

[0030] Specifically, attached Figure 10 and attached Figure 11 In the diagram, the top surface of the piston 420 is indicated by the reference numeral S1, and the bottom surface of the piston 420 is indicated by the reference numeral S2. The piston 420 is fitted onto the rod body 410 through the sleeve hole H1. At least one piston 420 needs to be fitted onto each end of the rod body 410. Preferably, at least one piston 420 can also be fitted onto the middle position of the rod body 410. For ease of description, this application uses the example of four pistons 420 fitted onto the rod body 410 for illustration. This is just an example and is not a specific limitation.

[0031] The rod 410 and the piston 420 are movable in the vertical direction. The piston 420 is slidably connected to the second moving component 500 via the sliding connecting groove 600. The relative sliding direction of the sliding connecting groove 600 and the second moving component 500 is inclined along the axial direction of the main shaft component 200 and relative to the axial direction of the main shaft component 200. Using the inclined sliding connecting groove 600, the vertical movement of the rod 410 and piston 420 is converted into horizontal movement of the second moving component 500, thereby driving the outward expansion and contraction of the telescopic component 310 in the horizontal direction. Through the mutual cooperation of the rod 410, piston 420, and second moving component 500, the direction of movement can be changed, allowing the outward expansion and contraction of the telescopic component 310 in the horizontal direction. This eliminates the need for a complex structure and has high feasibility.

[0032] Specifically, the rod body 410 may include multiple main rods and multiple connecting rods. The piston 420 is sleeved on the connecting rod. The connecting rod is connected to the main rod. The connecting rod and the main rod can be connected by means of threads, snaps, etc. This is only an example and is not a specific limitation.

[0033] In some embodiments, please refer to the following for details. Figure 1 , Figure 5 The rotor core stacking fixture 10 also includes a dustproof component 800 disposed at the top of the spindle component 200 to reduce the entry of external dust into the cavity of the spindle component 200.

[0034] In some embodiments, please refer to the following for details. Figures 9 to 11 The sliding connection groove 600 includes a first sub-groove 610 and a second sub-groove 620 connected in communication. The first sub-groove 610 is disposed on the side of the second sub-groove 620 near the rod 410. The width of the first sub-groove 610 is greater than the width of the second sub-groove 620. A portion of the second moving component 500 slides in cooperation with the first sub-groove 610.

[0035] It is understood that a portion of the second moving component 500 is disposed within the first sub-slot 610 and the second sub-slot 620. The size of the second sub-slot 620 is smaller than the size of the first sub-slot 610. The second moving component 500 includes a first portion and a second portion connected together. The first portion is disposed within the first sub-slot 610. Optionally, at least a portion of the second moving component (500) is also inserted into the second sub-slot 620. The second portion is disposed within the second sub-slot 620. A portion of the second moving component 500 slides in cooperation with the second sub-slot 620. The width of the first portion is greater than the width of the second portion. When the second moving component 500 slides within the first sub-slot 610 and the second sub-slot 620, the second sub-slot 620... The width of 0 is relatively small, and the first part is confined within the first sub-groove 610. The second moving part 500 will not easily disengage from the sliding connecting groove 600. When the rod 410 and the piston 420 of the first moving part 400 move up and down in the vertical direction, they drive the second moving part 500 to move outward and inward in the horizontal direction, thereby driving the outward expansion and telescopic part 310 to move outward and inward in the horizontal direction. This facilitates the contact between the outward expansion and telescopic part 310 and the inner edge of the rotor lamination 20, making it easy to neatly stack rotor laminations 20 of various sizes and conveniently remove the rotor core after stacking. For rotor laminations 20 of different sizes, it is not necessary to use multiple main shaft parts 200 with different outer diameters, reducing the number of production equipment and lowering production costs.

[0036] In some embodiments, please refer to the following for details. Figure 10 , Figure 11 The sliding connection groove 600 includes at least a first inner wall 601, a second inner wall 602, a third inner wall 603, and a fourth inner wall 604. Specifically, the first sub-groove may include the first inner wall 601, the second inner wall 602, the third inner wall 603, and the fourth inner wall 604; wherein the first inner wall 601 is arranged parallel to the second inner wall 602, the third inner wall 603 is arranged parallel to the fourth inner wall 604, and the first inner wall 601 is located on the side of the second inner wall 602 away from the outward expansion and telescopic component 310. The third inner wall 603 connects the first inner wall 601 and the second inner wall 602, and the fourth inner wall 604 connects the first inner wall 601 and the second inner wall 602. The first inner wall 601 is not perpendicular to the horizontal plane of the rotor core stacking fixture 10, the second inner wall 602 is not perpendicular to the horizontal plane of the rotor core stacking fixture 10, the third inner wall 603 is perpendicular to the horizontal plane of the rotor core stacking fixture 10, and the fourth inner wall 604 is perpendicular to the horizontal plane of the rotor core stacking fixture 10.

[0037] Specifically, please refer to Figures 5 to 11 The first inner wall 601 is disposed on the side of the second inner wall 602 away from the outward expansion and telescopic component 310. The first inner wall 601 is not perpendicular to the horizontal plane of the rotor core stacking fixture 10, and the second inner wall 602 is not perpendicular to the horizontal plane of the rotor core stacking fixture 10. Similarly, the first inner wall 601 and the horizontal plane of the rotor core stacking fixture 10 are not parallel, and the second inner wall 602 and the horizontal plane of the rotor core stacking fixture 10 are also not parallel. The first inner wall 601, the second inner wall 602, the third inner wall 603, and the fourth inner wall 604 each correspond to the contact surfaces of the first moving component 400 and the second moving component 500, respectively. It can be understood that when manufacturing the sliding connecting groove 600... When the sliding direction is set to be inclined towards the central axis of the rotor core stacking fixture 10, the sliding direction of the sliding connecting groove 600 is inclined relative to the main shaft component 200. This facilitates the cooperation between the first moving component 400 and the second moving component 500, converting the vertical movement of the first moving component 400 into the horizontal movement of the second moving component 500, thereby driving the outward expansion and telescopic component 310 to move horizontally, realizing the expansion and telescopic of the outward expansion and telescopic component 310. This makes it easy to neatly stack rotor laminations 20 of various sizes and conveniently remove the rotor core after stacking. For rotor laminations 20 of different sizes, it is not necessary to use multiple main shaft components 200 with different outer diameters, reducing the number of production equipment and lowering production costs.

[0038] In some embodiments, please refer to the following for details. Figure 10 , Figure 11 The sliding connection groove 600 further includes a third sub-groove 630, which is connected to the first sub-groove 610. The third sub-groove 630 is located on the side of the first sub-groove 610 near the rod 410. The width of the first sub-groove 610 is greater than the width of the third sub-groove 630, and a portion of the second moving component 500 slides in cooperation with the third sub-groove 630.

[0039] It is understood that at least a portion of the second moving component 500 is disposed within the third sub-groove 630, the size of which is smaller than that of the first sub-groove 610. The second moving component 500 may also include a third portion connected to the first portion. The third portion is disposed on the surface of the first portion away from the second portion, and the width of the first portion is greater than that of the third portion. The third portion can serve as a guide, which on the one hand facilitates the smooth guidance and assembly of the second moving component 500, and on the other hand facilitates the sliding guidance of the first portion, the second portion, and the third portion in the sliding connection groove 600, preventing deviation from the sliding direction.

[0040] In some embodiments, please refer to the following for details. Figure 10 , Figure 11 The first moving component 400 is also provided with a plurality of first avoidance chamfers 421. The first avoidance chamfers (421) are located at one end of the sliding connecting groove (600) and are used to avoid the corresponding second moving component (500).

[0041] Specifically, the piston 420 is provided with a plurality of first avoidance chamfers 421. The first avoidance chamfers 421 are located at one end of the corresponding second sub-groove 620. It can be understood that the first avoidance chamfers 421 are located at the end of the second sub-groove 620 corresponding to the second moving component 500. The first avoidance chamfers 421 are located on any one or both sides of the second sub-groove 620. A part of the second moving component 500 can slide within the sliding connection groove 600. During the sliding process of the second moving component 500, it may collide with the first moving component 421. Interference occurs between 00 and 00. During the applicant's actual operation, it was found that the position where interference is more likely to occur is at the end of the second sub-slot 620 corresponding to the second moving component 500, that is, at the top position of the piston 420. The first clearance chamfer 421 is set at the end of the second sub-slot 620 corresponding to the second moving component 500. It can be set on any side or both sides of the second sub-slot 620, which helps to reduce the interference between the second moving component 500 and the first moving component 400 and improve the overall reliability of the rotor core stacking fixture 10.

[0042] In some embodiments, please refer to the following for details. Figure 10 , Figure 11 The outer peripheral wall of the piston 420 is also provided with a plurality of first grooves 422. The first groove is located at the bottom end of the sliding connection groove 600 and is connected to the sliding connection groove 600. The depth of the first groove 422 is greater than the depth of the sliding connection groove 600.

[0043] Specifically, the first groove 422 penetrates the outer surface and bottom surface of the piston 420. It can be understood that the groove depth of the first groove 422 is greater than the groove depth of the sliding connection groove 600. The first groove 422, as a pre-grooving, can leave sufficient margin. During subsequent fine finishing, the internal stress of the piston 420 material has basically stabilized, which can reduce the risk of thin-wall twisting, reduce processing difficulty, improve processing accuracy, speed up production cycle, and improve production efficiency.

[0044] Optionally, the piston 420 may not have the first groove 422 to reduce the thickness of the piston 420. The second sub-groove 620 can directly penetrate the top surface, outer surface and bottom surface of the piston 420. During processing, the cutting tool does not need to penetrate the piston too deeply, reducing the processing difficulty, speeding up the production cycle and improving production efficiency.

[0045] In some embodiments, please refer to the following for details. Figures 1 to 4 , Figure 6 , Figure 7 The extension direction of the outward expansion and telescopic component 310 is parallel to the axial direction of the main shaft component 200. The second moving component 500 includes a plurality of base claws 510 arranged sequentially and at intervals along the extension direction of the outward expansion and telescopic component 310. Each piston 420 is provided with a plurality of sliding connecting grooves 600 at intervals along its circumference, and one sliding connecting groove 600 corresponds to one base claw 510. Each outward expansion and telescopic component 310 slides with the plurality of base claws 510 corresponding to the second moving component 500 and the plurality of sliding connecting grooves 600 corresponding to the plurality of pistons 420. The plurality of sliding connecting grooves 600 corresponding to the same outward expansion and telescopic component 310 are arranged axially along the main shaft component 200.

[0046] Specifically, the outward expansion and telescopic component 310 can be elongated, and one outward expansion and telescopic component 310 can be connected to multiple base claws 510. The arrangement direction of the multiple base claws 510 connected to the same outward expansion and telescopic component 310 is parallel to the axial direction of the main shaft component 200, that is, the multiple base claws 510 connected to the same outward expansion and telescopic component 310 can be arranged in a vertical direction; one base claw 510 corresponds to one sliding connecting groove 600, and the multiple sliding connecting grooves 600 corresponding to the same outward expansion and telescopic component 310 are arranged in a vertical direction; Each piston 420 may have multiple sliding connection grooves 600, and one piston 420 may correspond to multiple base claws 510. The number of base claws 510 may be 2, 3, 4 or even more. For ease of description, this application uses the example of one piston 420 corresponding to 4 base claws 510, which are evenly distributed along the circumference of the piston 420, i.e., one piston 420 corresponding to 4 sliding connection grooves 600, which are evenly distributed along the circumference of the piston 420. This is just an example and no specific limitation is made.

[0047] The vertical movement of the rod 410 and piston 420 is converted into horizontal movement of the base claw 510 by the inclined sliding connection groove. This causes the base claw 510 to move outward and inward in the horizontal direction. When the rod 410 and piston 420 move up and down in the vertical direction, the outward expansion and telescopic component 310 moves outward and inward in the horizontal direction. This facilitates the contact between the outward expansion and telescopic component 310 and the inner edge of the rotor lamination 20, making it easier to neatly stack rotor laminations 20 of various sizes and conveniently remove the rotor core after stacking. For rotor laminations 20 of different sizes, it is not necessary to use multiple main shaft components 200 with different outer diameters, reducing the number of production equipment and lowering production costs.

[0048] In some embodiments, the spindle component 200 includes a plurality of connecting holes, the connecting holes being disposed on the outer peripheral wall of the spindle component 200, the base claw 510 passing through the connecting holes to connect the outward expansion telescopic component 310 to the piston 420, and the base claw 510 being spaced apart from the inner wall of the connecting holes.

[0049] In some embodiments, please refer to the following for details. Figure 9The second moving component 500 is also provided with multiple oil storage tanks 511, which are disposed on the top surface of the base claw 510. Each oil storage tank 511 may include multiple grooves and multiple protrusions, arranged alternately. The extension direction of the grooves is perpendicular to the moving direction of the base claw 510, and the extension direction of the protrusions is also perpendicular to the moving direction of the base claw 510. During routine maintenance of the rotor core stacking fixture 10, lubricants such as lubricating oil are introduced from the top of the main shaft component 200 into the cavity of the main shaft component 200 to maintain and lubricate the internal parts. At this time, some lubricating oil can be temporarily stored in the oil storage tanks 511. In subsequent operations, the lubricating oil in the oil storage tanks 511 can slide into the cavity of the main shaft component 200 to continue to maintain and lubricate the internal parts, providing a slow-release and delayed delivery effect for the lubricating oil.

[0050] In some embodiments, please refer to the following for details. Figures 1 to 4 , Figure 6 , Figure 7 The rotor core stacking fixture 10 further includes at least one positioning key 320; wherein, the positioning key 320 is connected to the surface of the outward expansion and telescopic component 310 away from the main shaft component 200, and the shape of the positioning key 320 corresponds to the shape of the positioning groove of the rotor lamination 20 to be stacked.

[0051] The positioning key 320 can cooperate with the positioning groove on the lamination to limit the offset of the lamination in the stacking direction (axial direction), ensure that each lamination is aligned along the axial direction, and avoid the rotor core from being skewed or uneven in thickness after stacking; the positioning key 320 can also be used to fix the relative position of the lamination in the circumferential direction to prevent the lamination from rotating and misaligning around the circumferential direction.

[0052] Specifically, the expansion and telescopic component 310 corresponding to the positioning key 320 also includes an assembly groove on the outer side wall for installing the positioning key 320.

[0053] Specifically, the connection between the positioning key 320 and the outward expansion and telescopic component 310 can be made through a detachable connection method such as a snap-fit ​​or threaded connection, facilitating the replacement of the positioning key 320. A specific connection method can be selected according to the actual situation, such as an internal hex screw connection. This is only an example and not a specific limitation. Different sizes of positioning keys 320 can be matched to rotor laminations 20 of different sizes to facilitate the positioning and stacking of the rotor laminations 20.

[0054] In some embodiments, please refer to the following for details. Figure 1 , Figure 2 The rotor core stacking fixture 10 also includes a power component 700, which is connected to the first moving component 400 and is used to drive the first moving component 400 to move.

[0055] For details, please refer to [link / reference]. Figure 1 , Figure 2 The power unit 700 may include a hydraulic power pump station 710, a hydraulic pipe 720, and a cylinder. The hydraulic power pump station 710 is connected to the cylinder 730 through the hydraulic pipe 720. The hydraulic power pump station 710 provides power to the cylinder 730 through the hydraulic pipe 720. The cylinder 730 drives the first moving component 400 to reciprocate up and down. Specifically, the cylinder 730 may be connected to the rod 410 to enable the rod 410 to reciprocate up and down.

[0056] Specifically, the model of the hydraulic cylinder can be selected according to the power requirements and space requirements. This application uses a 6-inch hydraulic cylinder as an example, which is only for illustrative purposes and is not a specific limitation.

[0057] For details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 5 The base component 100 may include a hydraulic press platform 110, a main base 120, and a spindle base 130. The spindle base 130 is located above the main base 120, and the main base 120 is located above the hydraulic press platform 110. The size of the hydraulic press platform 110 is larger than the size of the main base 120, and the size of the main base 120 is larger than the size of the spindle base 130.

[0058] For details, please refer to [link / reference]. Figure 2 During the stacking process of rotor laminations 20, the main shaft base 130 can also be used to support rotor laminations 20.

[0059] The spindle component 200 is fixed above the spindle base 130. The fixing method can be a fixed connection method such as thread, screw, or welding. This is only an example and is not specifically limited.

[0060] In some embodiments, please refer to the following for details. Figure 3 , Figure 4 The surface of the outwardly expanding telescopic component 310 away from the main shaft component 200 is an arc surface. The inner hole of the rotor laminations 20 to be stacked is generally circular. The arc surface of the outwardly expanding telescopic component 310 away from the main shaft component 200 can correspond to the circular shape. The shape correspondence can maximize the contact area, and the load can be evenly transmitted through the matching geometric surface, reducing local stress. During contact, the rotor laminations 20 are stacked neatly and efficiently, and the shape matching can extend the service life of the component.

[0061] In some embodiments, the rotor core stacking fixture 10 further includes a buffer sub-part, which is disposed on the surface of the positioning key 320 away from the main shaft component 200. The buffer sub-part absorbs the kinetic energy during the collision through elastic deformation, converting the instantaneous impact force into the deformation energy of the buffer sub-part, thereby reducing the peak load transmitted to the connecting component. The main function of the positioning key 320 is to provide positioning; it does not undertake high-intensity contact tasks, nor is it responsible for the high-intensity neat stacking of the rotor laminations 20. Therefore, the positioning key 320 needs to be protected to a certain extent. The elastic modulus of the buffer sub-part is less than that of the positioning key 320. When the outward expansion telescopic component 310 expands outward, even if there is an error or excessive compression, the buffer sub-part can effectively protect the positioning key 320 and reduce damage to the positioning key 320.

[0062] Specifically, the buffer sub-part can be connected by a detachable connection method such as a snap-fit ​​or thread, making it convenient to replace the buffer sub-part.

[0063] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A rotor core stacking fixture (10), characterized in that, include: Base component (100); A spindle component (200) is disposed on the base component (100) and has an internal cavity; Multiple outwardly expanding and telescopic components (310) are disposed on the outer side of the main shaft component (200), and the multiple outwardly expanding and telescopic components (310) are arranged at intervals along the circumference of the main shaft component (200); The first moving component (400) is disposed within the cavity of the spindle component (200); The second moving component (500) is correspondingly connected to the outward expansion and telescopic component (310) and is slidably connected to the first moving component (400). The moving direction of the second moving component (500) is perpendicular to the axial direction of the main shaft component (200). The first moving component (400) is provided with a plurality of sliding connecting grooves (600), and the second moving component (500) is slidably connected to the first moving component (400) through the corresponding sliding connecting grooves (600). The relative sliding direction of the sliding connecting grooves (600) and the second moving component (500) is along the axial direction of the main shaft component (200) and inclined relative to the axial direction of the main shaft component (200). The first moving component (400) moves along the axial direction of the main shaft component (200) and drives the second moving component (500) to move along the radial direction of the main shaft component (200) away from the main shaft component (200), so that the corresponding outward expansion telescopic component (310) extends relative to the main shaft component (200).

2. The rotor core stacking fixture (10) according to claim 1, characterized in that, The first moving part (400) includes: The rod (410) extends and moves in a direction parallel to the axis of the main shaft component (200); Multiple pistons (420) are spaced apart and sleeved on the rod (410); The piston (420) has a sliding connection groove (600) on its outer peripheral wall. One end of the sliding connection groove (600) passes through the top surface of the piston (420), and at least a portion of the second moving component (500) is disposed in the sliding connection groove (600).

3. The rotor core stacking fixture (10) according to claim 2, characterized in that, The sliding connection groove (600) includes a first sub-groove (610) and a second sub-groove (620) connected in a manner, wherein the first sub-groove (610) is located on the side of the second sub-groove (620) near the rod (410); The width of the first sub-slot (610) is greater than the width of the second sub-slot (620), and a portion of the second moving component (500) slides in cooperation with the first sub-slot (610).

4. The rotor core stacking fixture (10) according to claim 3, characterized in that, The sliding connection groove (600) further includes a third sub-groove (630), which is connected to the first sub-groove (610) and is located on the side of the first sub-groove (610) near the rod (410). The width of the first sub-slot (610) is greater than the width of the third sub-slot (630), and a portion of the second moving component (500) slides in cooperation with the third sub-slot (630).

5. The rotor core stacking fixture (10) according to claim 2, characterized in that, The outer peripheral wall of the piston (420) is also provided with a plurality of first grooves (422); The first groove (422) is located at the bottom end of the sliding connection groove (600) and is connected to the sliding connection groove (600). The depth of the first groove (422) is greater than the depth of the sliding connection groove (600).

6. The rotor core stacking fixture (10) according to claim 2, characterized in that, The extension direction of the outward expansion telescopic component (310) is parallel to the axial direction of the main shaft component (200), and the second moving component (500) includes a plurality of base claws (510) arranged sequentially at intervals along the extension direction of the outward expansion telescopic component (310). Each of the pistons (420) is provided with a plurality of sliding connecting grooves (600) spaced apart along its circumference; Each of the expansion telescopic components (310) slides in contact with the sliding connecting grooves (600) of the pistons (420) via the plurality of base claws (510) corresponding to the second moving component (500), and the plurality of sliding connecting grooves (600) corresponding to the same expansion telescopic component (310) are arranged axially along the main shaft component (200).

7. The rotor core stacking fixture (10) according to claim 1, characterized in that, The rotor core stacking fixture (10) also includes at least one positioning key (320). The positioning key (320) is connected to the surface of the outward expansion and telescopic component (310) on the side away from the main shaft component (200), and the shape of the positioning key (320) corresponds to the shape of the positioning groove of the rotor lamination (20) to be stacked.

8. The rotor core stacking fixture (10) according to claim 1, characterized in that, The surface of the outwardly expanding telescopic component (310) on the side away from the main shaft component (200) is an arc surface.

9. The rotor core stacking fixture (10) according to claim 1, characterized in that, The first moving component (400) is also provided with a plurality of first avoidance chamfers (421), which are located at one end of the sliding connecting groove (600) and are used to avoid the corresponding second moving component (500).

10. The rotor core stacking fixture (10) according to any one of claims 1-9, characterized in that, The rotor core stacking fixture (10) also includes a power component (700), which is connected to the first moving component (400) and is used to drive the first moving component (400) to move.

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