A press-fit device for stator and rotor of brushless motor

Abstract

The present invention discloses a press-fitting device for the stator and rotor of a brushless motor, and specifically relates to the technical field of motor processing devices, including a machine platform, a support frame fixedly connected to the upper end of the machine platform, a hydraulic cylinder fixedly connected to the upper end of the support frame, a fixed press-fitting structure fixedly connected to the output end of the hydraulic cylinder is provided on the inner surface of the support frame, and a positioning clamping structure is provided in the middle of the upper end of the machine platform. The press-fitting device for the stator and rotor of a brushless motor described in the present invention uses the gravity of the stator housing itself in conjunction with the positioning clamping structure to position and basically fix it, avoiding damage caused by housing displacement during the press-fitting process, and uses the force of the hydraulic cylinder on the fixed press-fitting structure to drive the rotor to move downward and gradually press into the stator housing, and further fixes the stator housing during the press-fitting process through the cooperation of the fixed press-fitting structure, and after the press-fitting is completed, the fixed press-fitting structure is separated from the rotor by the cooperation of the hydraulic cylinder and the fixed press-fitting structure.

Description

Technical Field

[0001] The invention relates to the technical field of motor processing devices, and in particular to a press-fitting device for a stator and a rotor of a brushless motor. Background Art

[0002] In the field of motors, especially in the manufacturing process of brushless motors, the press-fitting of stators and rotors is a key step. Traditionally, the stator of a brushless motor consists of a stator core, an insulation frame, and windings, while the rotor is usually composed of a permanent magnet and a rotor core. During the press-fitting process, it is necessary to ensure the coaxiality and fixing strength of the stator and rotor to ensure efficient operation and long-term stability of the motor.

[0003] Chinese patent announcement No. CN220342190U discloses a motor rotor press-fitting device, including an operating table, a support table and a bracket arranged in sequence from bottom to top, wherein the operating table is provided with an alignment hole, a support rod is provided between the support table and the operating table, and the support rod is located around the alignment hole, a cylinder is provided on the bracket, one end of the cylinder is connected to a cylinder pressure head, the cylinder pressure head passes through the support table and is located below the support table, pulleys are also connected to both ends of the bracket, a steel wire rope is provided on the pulley, a clamping block is connected to the bottom of the steel wire rope, and the clamping block is located below the cylinder pressure head.

[0004] Although the above patent document has a simple structure and is easy to assemble, the device cannot position the stator housing, and during the press-fitting process, additional equipment or manual fixation is still required. In addition, after the press-fitting is completed, the pressing block cannot be automatically separated from the rotor axis, and additional operations are required for removal. Summary of the invention

[0005] The main purpose of the present invention is to provide a press-fitting device for the stator and rotor of a brushless motor, which can effectively solve the problems that the existing device cannot automatically position the stator shell, the stator shell has a poor fixing effect during the press-fitting process, and the rotor cannot be automatically released after press-fitting.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A press-fitting device for the stator and rotor of a brushless motor comprises a machine platform, the upper end of the machine platform is fixedly connected to a support frame, the upper end of the support frame is fixedly connected to a hydraulic cylinder, the inner surface of the support frame is provided with a fixed press-fitting structure fixedly connected to the output end of the hydraulic cylinder, a positioning clamping structure is provided in the middle of the upper end of the machine platform, and the upper end of the machine platform is fixedly connected to a control cabinet.

[0008] Preferably, the positioning and clamping structure includes a slide groove 1 which is arranged in a circular distribution on the upper end of the machine platform and a slide groove 3 which is arranged in the middle part of the upper end of the machine platform and is connected with the slide groove 1. A plurality of slide grooves 2 are symmetrically distributed on the upper end of the machine platform relative to the slide groove 1. The two slide grooves 2 and the slide groove 1 on the same side are jointly provided with a clamping assembly. The four clamping assemblies are jointly provided with a bearing assembly which is slidably connected to the inner surface of the slide groove 3.

[0009] Preferably, the clamping assembly includes a handle slidably connected to the inner surfaces of two slide grooves on the same side through a pulley, a clamping rod is symmetrically fixedly connected to the slide groove on the same side on the side of the upper end of the handle close to the load-bearing assembly, and limiting holes are provided on the two clamping rods close to the load-bearing assembly. The inner surfaces of the two limiting holes are both slidably connected to the limiting rod 1, and the two limiting rods are commonly fixedly connected to a buffer plate on the side close to the load-bearing assembly. The outer surfaces of the two limiting rods 1 are both sleeved with buffer springs fixedly connected to the clamping rod and the buffer plate, and the end of the handle close to the load-bearing assembly is rotatably connected to a connecting rod 1 rotatably connected to the load-bearing assembly, and the connecting rod 1 slides in the inner cavity of the slide groove 1.

[0010] Preferably, the bearing assembly includes a positioning component, the lower end of the positioning component is fixedly connected to a limit slider slidingly connected to the inner surface of the third slide groove, the lower end of the limit slider is fixedly connected to a limit rod 2, the outer surface of the limit rod 2 is slidingly connected to a damping rod rotatably connected to four connecting rods, and the upper end of the damping rod is fixedly connected to a compression spring 1 fixedly connected to the lower end of the limit slider.

[0011] Preferably, the positioning component includes a cross bearing platform fixedly connected to the upper end of the limiting slider, a plurality of conical holes are opened on the upper end of the cross bearing platform, a plurality of spring plates are fixedly connected to the bottom walls of the inner surfaces of the conical holes, a plurality of ball bearings are provided on the upper parts of the spring plates which are slidably connected to the inner walls of the conical holes, and an auxiliary hole is opened in the middle part of the upper end of the cross bearing platform.

[0012] Preferably, the fixed pressing structure includes four slide grooves opened on one side of the vertical parts on both sides of the support frame close to the hydraulic cylinder, the inner surface of the four slide grooves is slidably connected with a sliding plate fixedly connected to the output end of the hydraulic cylinder, the lower end of the sliding plate is symmetrically provided with a shell fixing component slidingly connected to the inner surface of the four adjacent slide grooves, and the middle part of the lower end of the sliding plate is fixedly connected with a rotor fixing component.

[0013] Preferably, the shell fixing assembly includes a connecting rod 2 fixedly connected to the lower end of the sliding plate, a fixing ring is fixedly connected to the upper part of the outer surface of the connecting rod 2, a roller slider slidably connected to the inner wall of the sliding groove 4 is slidably connected to the lower part of the outer surface of the connecting rod 2, a compression spring 3 fixedly connected to the upper end of the roller slider is fixedly connected to the lower end of the fixing ring, the roller slider is fixedly connected to the shell pressure plate at one end close to the hydraulic cylinder, and the lower end of the connecting rod 2 is fixedly connected to a limiting block.

[0014] Preferably, the rotor fixing assembly includes a central shaft fixedly connected to the lower end of the sliding plate, a threaded groove is provided on the upper portion of the outer surface of the central shaft, an adjusting knob is threadedly connected to the inner surface of the threaded groove, a second compression spring is fixedly connected to the lower end of the adjusting knob, a rotor pressure plate is fixedly connected to the lower end of the second compression spring, and a rotor fixing component is provided at the lower end of the central shaft.

[0015] Preferably, the rotor fixing component includes a mounting block fixedly connected to the lower end of the central shaft, a plurality of receiving grooves are provided in an annular distribution on the outer surface of the mounting block, a plurality of the receiving grooves are provided with ejector grooves on one side away from the outer surface of the mounting block, a plurality of the ejector grooves are slidably connected to spring ejectors on the inner surfaces, and a support rod is rotatably connected to the lower portion of the inner surface of the receiving groove.

[0016] Preferably, the bottom of the inner surface of the spring ejector pin is an inclined surface, and when the support rod is outside the spring ejector pin, its maximum outer diameter is much larger than the outer diameter of the central axis, and the inner side of the spring ejector pin can completely accommodate the support rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention utilizes the gravity of the stator housing itself and the action of the positioning and clamping structure to position and basically fix it, so as to avoid damage caused by the displacement of the housing during the press-fitting process. At the same time, the rotor is fixed by the action of the fixed press-fitting structure. The hydraulic cylinder is controlled to extend through the control cabinet, and the action of the hydraulic cylinder on the fixed press-fitting structure is used to drive the rotor to move downward and gradually press into the stator housing. The stator housing is further fixed during the press-fitting process by the cooperation of the hydraulic cylinder and the fixed press-fitting structure. After the press-fitting is completed, the cooperation of the hydraulic cylinder and the fixed press-fitting structure is used to separate the fixed press-fitting structure from the rotor, and the fixed press-fitting structure is brought out of the rotor by the action of the hydraulic cylinder to complete the press-fitting.

[0019] 2. The present invention cooperates with the load-bearing component and the clamping component. When the stator housing is placed on the clamping component, the weight of the stator housing is used to drive the load-bearing component to slide downward in the slide groove three, and simultaneously drives the handles around it to move inward through the connecting rod one, so that it is clamped on the surface of the stator housing through the action of the buffer plate and the buffer spring. If the stator housing is not in the center at this time, the cooperation between the buffer plate and the ball will push the stator housing to move closer to the middle, thereby realizing automatic centering and fixation.

[0020] 3. The present invention utilizes the action of the hydraulic cylinder on the sliding plate to drive the housing fixing assembly to move downward along the slide groove four, and thereby drives the roller slider to slide downward in the slide groove four so that the housing pressure plate is pressed on the upper part of the stator housing from the left and right sides. Through the action of the housing pressure plate and the compression spring one, the stator housing is tightly fitted above the positioning component and its position is fixed relative to the rotor carried by the rotor fixing assembly, thereby assisting in its positioning, avoiding position offset during the press-fitting process that affects the press-fitting effect, and reducing the occurrence of the rotor and stator being stuck due to the press-fitting position offset.

[0021] 4. The present invention utilizes the cooperation of the adjusting knob and the rotor fixing component to fix the rotor and drive the rotor to move downward continuously during the pressing process. The cooperation between the threaded groove and the adjusting knob can adapt to the pressing operation of rotors of different lengths. In addition, the support rod can be stored in the storage groove after the pressing is completed through the cooperation of the rotor fixing component and the lower auxiliary hole. At this time, the rotor fixing component can be taken out of the rotor through the action of the hydraulic cylinder, so that the rotor fixing assembly and the rotor are automatically separated, thereby improving the convenience of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the positioning and clamping structure of the present invention;

[0024] Figure 3 It is a schematic cross-sectional structure diagram of the positioning and clamping structure of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the clamping assembly of the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged local structure at center A;

[0027] Figure 6 It is a schematic diagram of the explosion effect of the clamping assembly of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the bearing assembly of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the positioning component of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the fixed press-fit structure of the present invention;

[0031] Fig.10 It is a structural schematic diagram of the housing fixing assembly of the present invention;

[0032] Fig.11 It is a schematic diagram of the explosion effect of the rotor fixing assembly of the present invention;

[0033] Fig.12 It is a schematic structural diagram of the rotor fixing component of the present invention.

[0034] In the figure: 1, machine; 2, control cabinet; 3, positioning clamping structure; 31, clamping assembly; 311, handle; 312, buffer plate; 313, connecting rod 1; 314, buffer spring; 315, limit rod 1; 316, limit hole; 317, clamping rod; 32, bearing assembly; 321, positioning component; 3211, cross bearing platform; 3212, auxiliary hole; 3213, ball; 3214, spring plate; 3215, tapered hole; 322, limit slider; 323, compression spring 1; 324, damping rod; 325, limit rod 2; 33, slide slot 1; 34, slide slot 2; 35, slide slot 3; 4. Support frame; 5. Hydraulic cylinder; 6. Fixed pressing structure; 61. Sliding plate; 62. Rotor fixing assembly; 621. Center axis; 622. Threaded groove; 623. Adjusting knob; 624. Compression spring 2; 625. Rotor pressure plate; 626. Rotor fixing component; 6261. Mounting block; 6262. Storage groove; 6263. Ejector groove; 6264. Spring ejector; 6265. Support rod; 63. Housing fixing assembly; 631. Connecting rod 2; 632. Fixing ring; 633. Compression spring 3; 634. Roller slider; 635. Housing pressure plate; 636. Limit block; 64. Slide groove 4. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] Embodiment 1

[0037] See also Figure 1 A press-fitting device for a brushless motor stator and rotor comprises a machine platform 1, a support frame 4 is fixedly connected to the upper end of the machine platform 1, a hydraulic cylinder 5 is fixedly connected to the upper end of the support frame 4, a fixed press-fitting structure 6 fixedly connected to the output end of the hydraulic cylinder 5 is arranged on the inner surface of the support frame 4, a positioning clamping structure 3 is arranged in the middle of the upper end of the machine platform 1, and a control cabinet 2 is fixedly connected to the upper end of the machine platform 1.

[0038] It should be noted that the control cabinet 2 is a conventional controller, which is mainly used to control the extension and retraction of the hydraulic cylinder 5 by starting and stopping the external liquid pump. Its control method and control program are conventional technical means in the prior art. In the present invention, only its control equipment operation is used, and its internal wiring method and control method are not elaborated in detail.

[0039] Similarly, the hydraulic cylinder 5 is also widely used in the prior art, and its specific structure and connection methods of oil circuits, control circuits, etc. are all conventional technical means in the prior art, and its detailed principles will not be repeated in the present invention.

[0040] During the operation of this embodiment, the stator housing is first positioned and basically fixed by its own gravity in cooperation with the positioning and clamping structure 3 to avoid damage caused by housing displacement during the press-fitting process. At the same time, the rotor is fixed by the fixed press-fitting structure 6. The hydraulic cylinder 5 is extended by the control cabinet 2, and the rotor is driven downward by the force of the hydraulic cylinder 5 on the fixed press-fitting structure 6 and gradually pressed into the stator housing. The stator housing is further fixed during the press-fitting process by the cooperation of the hydraulic cylinder 5 and the fixed press-fitting structure 6. After the press-fitting is completed, the fixed press-fitting structure 6 is separated from the rotor by the cooperation of the hydraulic cylinder 5 and the fixed press-fitting structure 6, and the fixed press-fitting structure 6 is brought out of the rotor by the action of the hydraulic cylinder 5 to complete the press-fitting.

[0041] Embodiment 2

[0042] On the basis of the first embodiment, this embodiment uses the cooperation between the load-bearing component 32 and the clamping component 31. When the stator housing is placed on the clamping component 31, the weight of the stator housing is used to drive the load-bearing component 32 to slide downward in the slide groove 35, and simultaneously drives the handles 311 around it to move inward through the connecting rod 1 313, so that it is clamped on the surface of the stator housing through the action of the buffer plate 312 and the buffer spring 314. If the stator housing is not in the center at this time, the cooperation between the buffer plate 312 and the ball 3213 will push the stator housing to move closer to the middle, thereby achieving automatic centering and fixation.

[0043] Specifically, to achieve the positioning and basic fixation of the stator housing, refer to Figure 2 and Figure 3 The positioning and clamping structure 3 includes a slide groove 1 33 arranged in a circular distribution on the upper end of the machine 1 and a slide groove 35 arranged in the middle of the upper end of the machine 1 and connected with the slide groove 1 33. A plurality of slide grooves 2 34 are symmetrically arranged on the upper end of the machine 1 relative to the slide groove 1 33. The two slide grooves 2 34 and the slide groove 1 33 on the same side are jointly provided with a clamping assembly 31. The four clamping assemblies 31 are jointly provided with a bearing assembly 32 which is slidably connected with the inner surface of the slide groove 3 35.

[0044] The second slide groove 34 is used to limit the running track of the clamping component 31, and the third slide groove 35 is used to limit the running track of the load-bearing component 32. At the same time, there is a certain resistance between the third slide groove 35 and the load-bearing component 32. When no objects are placed above the load-bearing component 32, the clamping component 31, the third slide groove 35, and the control cabinet 2 are in a balanced state.

[0045] Further, in order to realize the compression fixation of the stator housing, refer to Figure 4 , Figure 5 and Figure 6 The clamping assembly 31 includes a handle 311 that is slidably connected to the inner surfaces of the two slide grooves 34 on the same side through a pulley, and a clamping rod 317 is symmetrically fixedly connected to the side of the upper end of the handle 311 close to the load-bearing assembly 32 relative to the slide groove 1 33 on the same side. A limiting hole 316 is provided on the side of the two clamping rods 317 close to the load-bearing assembly 32, and the inner surfaces of the two limiting holes 316 are slidably connected to the limiting rod 1 315. The two limiting rods 1 315 are jointly fixedly connected to a buffer plate 312 on the side close to the load-bearing assembly 32, and the outer surfaces of the two limiting rods 1 315 are both sleeved with buffer springs 314 fixedly connected to the clamping rod 317 and the buffer plate 312. The end of the handle 311 close to the load-bearing assembly 32 is rotatably connected to a connecting rod 1 313 rotatably connected to the load-bearing assembly 32, and the connecting rod 1 313 slides in the inner cavity of the slide groove 1 33.

[0046] The handle 311 is slidably connected to the second slide groove 34 through a pulley. When the handle 311 is pulled by the load-bearing assembly 32, the handle 311 slides in the second slide groove 34 toward the load-bearing assembly 32, thereby driving the clamping rod 317 to move toward the load-bearing assembly 32, and synchronously making the buffer plate 312 fit with the surface of the stator housing and gradually press on the surface of the stator housing;

[0047] At the same time, since the clamping assembly 31, the slide slot 35, and the control cabinet 2 are in a balanced state when no object is placed on the carrying assembly 32, the handle 311 can be pulled to drive the handles 311 around to move away from each other, thereby facilitating the placement of the positioning housing on the carrying assembly 32;

[0048] After the press-fitting is completed, the buffer plates 312 around the stator housing can be separated by pulling the handle 311, and then the press-fitted motor components can be taken out.

[0049] Furthermore, in order to utilize the weight of the stator housing itself to drive the handles 311 on both sides to move inwards so as to perform preliminary fixing and positioning of the stator housing, Figure 7 and Figure 8 The bearing assembly 32 includes a positioning component 321, the lower end of the positioning component 321 is fixedly connected to a limit slider 322 that is slidably connected to the inner surface of the slide groove 35, the lower end of the limit slider 322 is fixedly connected to a limit rod 2 325, the outer surface of the limit rod 2 325 is slidably connected to a damping rod 324 that is rotatably connected to four connecting rods 1 313, and the upper end of the damping rod 324 is fixedly connected to a compression spring 1 323 that is fixedly connected to the lower end of the limit slider 322.

[0050] After the positioning component 321 receives the stator housing, it will compress the limit slider 322 to slide downward in the slide groove three 35, and synchronously compress the damping rod 324 to slide downward in the slide groove three 35 through the compression spring one 323. The position change of the damping rod 324 will drive the position change of the connecting rod one 313. At this time, under the traction of the connecting rod one 313, the handle 311 will move inward, thereby prompting the buffer plate 312 to fit against the surface of the stator housing to clamp and fix it.

[0051] Further, in order to realize the positioning of the stator housing in coordination with the action of the buffer plate 312, refer to Figure 8 The positioning component 321 includes a cross bearing platform 3211 fixedly connected to the upper end of the limiting slider 322, a plurality of conical holes 3215 are opened on the upper end of the cross bearing platform 3211, the bottom walls of the inner surfaces of the plurality of conical holes 3215 are fixedly connected with spring plates 3214, the upper parts of the plurality of spring plates 3214 are provided with balls 3213 slidably connected to the inner walls of the conical holes 3215, and an auxiliary hole 3212 is opened in the middle part of the upper end of the cross bearing platform 3211.

[0052] The spring plate 3214 opened on the cross bearing platform 3211 can make the ball 3213 partially protrude from the surface of the cross bearing platform 3211. When the stator housing is not in the center position, when the buffer plate 312 pushes the surface of the stator housing, the stator housing will start to slide under the action of the ball 3213, and finally fit tightly with the buffer plates 312 on all sides. At this time, the stator housing is in the center position, thereby realizing automatic positioning.

[0053] Embodiment 3

[0054] On the basis of the second embodiment, this embodiment further utilizes the action of the hydraulic cylinder 5 on the sliding plate 61 to drive the shell fixing component 63 to move downward along the slide groove four 64, and thereby drives the roller slider 634 to slide downward in the slide groove four 64 so that the shell pressure plate 635 is pressed on the upper part of the stator shell from the left and right sides. Through the action of the shell pressure plate 635 and the compression spring one 323, the stator shell is tightly fitted above the positioning component 321 and its position is fixed relative to the rotor carried by the rotor fixing component 62, thereby assisting in its positioning, avoiding position offset during the press-fitting process that affects the press-fitting effect, and reducing the occurrence of the rotor and stator being stuck due to the press-fitting position offset.

[0055] Specifically, to achieve the press-fitting of the rotor and the further fixing of the stator, refer to Fig. 9The fixed pressing structure 6 includes four slide grooves 64 opened on the side of the vertical part of the support frame 4 close to the hydraulic cylinder 5. The inner surface of the four slide grooves 64 is slidably connected with a sliding plate 61 fixedly connected to the output end of the hydraulic cylinder 5. The lower end of the sliding plate 61 is symmetrically provided with a shell fixing component 63 slidably connected to the inner surface of the adjacent four slide grooves 64. The middle part of the lower end of the sliding plate 61 is fixedly connected with a rotor fixing component 62.

[0056] The sliding plate 61 is acted upon by the hydraulic cylinder 5, and synchronously follows the extension and retraction of the hydraulic cylinder 5 to slide up and down in the sliding groove 4 64. At the same time, the rotor fixing assembly 62 and the housing fixing assembly 63 below the sliding plate 61 are driven to synchronously follow the movement of the sliding plate 61.

[0057] Furthermore, in order to further fix the stator and avoid the stator from shifting during the press-fitting process, refer to Fig.10 The shell fixing assembly 63 includes a second connecting rod 631 fixedly connected to the lower end of the sliding plate 61, a fixing ring 632 is fixedly connected to the upper part of the outer surface of the second connecting rod 631, a roller slider 634 is slidably connected to the inner wall of the fourth slide groove 64 at the lower part of the outer surface of the second connecting rod 631, a compression spring three 633 is fixedly connected to the upper end of the roller slider 634 at the lower end of the fixing ring 632, a shell pressure plate 635 is fixedly connected to the end of the roller slider 634 close to the hydraulic cylinder 5, and a limiting block 636 is fixedly connected to the lower end of the second connecting rod 631.

[0058] The second connecting rod 631 slides in the roller slider 634. When the second connecting rod 631 descends following the action of the sliding plate 61, it will first press the roller slider 634 downward through the fixing ring 632 and the compression spring three 633 until the shell pressure plate 635 on the roller slider 634 contacts the upper part of the stator shell. At this time, the roller slider 634 no longer descends under the action of the shell pressure plate 635, and the compression spring three 633 is gradually compressed, causing the shell pressure plate 635 to press the stator shell to fix it on the upper part of the positioning component 321, thereby avoiding the stator shell from being offset during the press-fitting process.

[0059] Embodiment 4

[0060] On the basis of the third embodiment, this embodiment utilizes the cooperation of the adjusting knob 623 and the rotor fixing component 626 to fix the rotor and drive the rotor to move downward continuously during the pressing process. The cooperation between the threaded groove 622 and the adjusting knob 623 can adapt to the pressing operation of rotors of different lengths. In addition, the cooperation between the rotor fixing component 626 and the lower auxiliary hole 3212 can be used to store the support rod 6265 in the storage groove 6262 after the pressing is completed. At this time, the rotor fixing component 626 can be taken out of the rotor through the action of the hydraulic cylinder 5, so that the rotor fixing assembly 62 and the rotor are automatically separated, thereby improving the convenience of equipment use.

[0061] Specifically, to achieve the pressing, fixing and releasing of the rotation, refer to Fig.10 and Fig.11 The rotor fixing assembly 62 includes a central shaft 621 fixedly connected to the lower end of the sliding plate 61, a threaded groove 622 is provided on the upper portion of the outer surface of the central shaft 621, an adjusting knob 623 is threadedly connected to the inner surface of the threaded groove 622, a compression spring 624 is fixedly connected to the lower end of the adjusting knob 623, a rotor pressure plate 625 is fixedly connected to the lower end of the compression spring 624, and a rotor fixing component 626 is provided at the lower end of the central shaft 621.

[0062] The rotor fixing component 626 at the bottom is unidirectional and can insert the rotor into the outer surface of the central shaft 621 from the bottom. At this time, the rotor fixing component 626 opens and supports the rotor from the bottom to prevent it from falling. At the same time, the adjusting knob 623 is turned to make it descend along the threaded groove 622 until the rotor pressure plate 625 contacts the upper part of the rotor axis and gradually compresses the compression spring 2 624 to fix it on the outer surface of the central shaft 621. During the descending process of the sliding plate 61, the rotor will be gradually pressed to drive it to descend and press it into the stator housing.

[0063] Furthermore, the rotor is supported during the press-fitting process and is automatically released after the press-fitting is completed. Fig.11 and Fig.12 The rotor fixing component 626 includes a mounting block 6261 fixedly connected to the lower end of the central shaft 621, a plurality of receiving grooves 6262 are arranged in an annular distribution on the outer surface of the mounting block 6261, a plurality of receiving grooves 6262 are arranged on one side away from the outer surface of the mounting block 6261 with ejector grooves 6263, a plurality of ejector grooves 6263 are slidably connected to the inner surfaces of the plurality of ejector grooves 6263, a support rod 6265 is rotatably connected to the lower part of the inner surface of the mounting block 6261, the bottom of the inner surface of the spring ejector 6264 is an inclined surface, and when the support rod 6265 is outside the spring ejector 6264, its maximum outer diameter is much larger than the outer diameter of the central shaft 621, and the inner side of the spring ejector 6264 can completely accommodate the support rod 6265.

[0064] Under the action of the spring ejector pin 6264, the support rod 6265 will remain expanded outside the receiving groove 6262. When the motor rotor enters from the bottom, it will press the support rod 6265 into the receiving groove 6262 until the rotor axis completely passes through the support rod 6265. The support rod 6265 opens and contacts the bottom of the rotor under the action of the spring ejector pin 6264, supports the rotor from the bottom, and cooperates with the adjustment knob 623 and the rotor pressure plate 625 to fix the rotor on the outer surface of the central axis 621.

[0065] When the rotor fixing component 626 sinks into the auxiliary hole 3212, it will enter the receiving groove 6262 under the squeezing of the auxiliary hole 3212. At this time, the rotor continues to move downward under the action of the adjusting knob 623 and the rotor pressure plate 625 until the rotor reaches the predetermined position, and the support rod 6265 is completely received in the receiving groove 6262. When the center shaft 621 is retracted upward under the action of the hydraulic cylinder 5, the support rod 6265 is in the receiving groove 6262, and the rotor is no longer limited, so that the center shaft 621 can be removed from the rotor.

[0066] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A press-fitting device for a brushless motor stator and rotor, comprising a machine (1), characterized in that: The upper end of the machine platform (1) is fixedly connected to a support frame (4), the upper end of the support frame (4) is fixedly connected to a hydraulic cylinder (5), the inner surface of the support frame (4) is provided with a fixed pressing structure (6) fixedly connected to the output end of the hydraulic cylinder (5), a positioning clamping structure (3) is provided in the middle of the upper end of the machine platform (1), and the upper end of the machine platform (1) is fixedly connected to a control cabinet (2); The positioning clamping structure (3) comprises a slide groove 1 (33) arranged in an annular manner on the upper end of the machine platform (1) and a slide groove 3 (35) arranged in the middle of the upper end of the machine platform (1) and connected to the slide groove 1 (33); a plurality of slide grooves 2 (34) are arranged on the upper end of the machine platform (1) symmetrically with respect to the slide groove 1 (33); two slide grooves 2 (34) and the slide groove 1 (33) on the same side are provided with a clamping assembly (31); and the four clamping assemblies (31) are provided with a bearing assembly (32) slidably connected to the inner surface of the slide groove 3 (35); The clamping assembly (31) comprises a handle (311) slidably connected to the inner surfaces of two second slide grooves (34) on the same side through a pulley, a clamping rod (317) is symmetrically fixedly connected to the upper end of the handle (311) near the bearing assembly (32) relative to the first slide groove (33) on the same side, and a limiting hole (316) is provided on the side of the two clamping rods (317) near the bearing assembly (32), and the inner surfaces of the two limiting holes (316) are slidably connected to the limiting rod (315), and the two limiting holes (316) are slidably connected to the inner surfaces of the two limiting holes (316). The limiting rod 1 (315) is fixedly connected to a buffer plate (312) on one side close to the bearing assembly (32); the outer surfaces of the two limiting rods 1 (315) are sleeved with a buffer spring (314) fixedly connected to the clamping rod (317) and the buffer plate (312); the end of the handle (311) close to the bearing assembly (32) is rotatably connected to a connecting rod 1 (313) rotatably connected to the bearing assembly (32); the connecting rod 1 (313) slides in the inner cavity of the slide groove 1 (33); The bearing assembly (32) comprises a positioning component (321), the lower end of the positioning component (321) is fixedly connected to a limit slider (322) slidably connected to the inner surface of the third slide groove (35), the lower end of the limit slider (322) is fixedly connected to a limit rod (325), the outer surface of the limit rod (325) is slidably connected to a damping rod (324) rotatably connected to the four connecting rods (313), and the upper end of the damping rod (324) is fixedly connected to a compression spring (323) fixedly connected to the lower end of the limit slider (322); The fixed press-fit structure (6) comprises a slide groove (64) provided on one side of the vertical part of both sides of the support frame (4) close to the hydraulic cylinder (5); the inner surface of the slide groove (64) is slidably connected to a slide plate (61) fixedly connected to the output end of the hydraulic cylinder (5); the lower end of the slide plate (61) is symmetrically provided with a shell fixing component (63) slidably connected to the inner surface of the adjacent slide groove (64); the middle part of the lower end of the slide plate (61) is fixedly connected to a rotor fixing component (62); The housing fixing assembly (63) comprises a second connecting rod (631) fixedly connected to the lower end of the sliding plate (61); a fixing ring (632) is fixedly connected to the upper portion of the outer surface of the second connecting rod (631); a roller slider (634) is slidably connected to the inner wall of the fourth slide groove (64) at the lower portion of the outer surface of the second connecting rod (631); a compression spring (633) is fixedly connected to the upper end of the roller slider (634) at the lower end of the fixing ring (632); a housing pressure plate (635) is fixedly connected to the end of the roller slider (634) close to the hydraulic cylinder (5); and a limiting block (636) is fixedly connected to the lower end of the second connecting rod (631); The rotor fixing assembly (62) comprises a central shaft (621) fixedly connected to the lower end of the sliding plate (61); a thread groove (622) is provided on the upper portion of the outer surface of the central shaft (621); an adjusting knob (623) is threadedly connected to the inner surface of the thread groove (622); a second compression spring (624) is fixedly connected to the lower end of the adjusting knob (623); a rotor pressure plate (625) is fixedly connected to the lower end of the second compression spring (624); and a rotor fixing component (626) is provided at the lower end of the central shaft (621).

2. A press-fitting device for a brushless motor stator and rotor according to claim 1, characterized in that: The positioning component (321) comprises a cross bearing platform (3211) fixedly connected to the upper end of the limiting slider (322); a plurality of conical holes (3215) are provided at the upper end of the cross bearing platform (3211); a plurality of spring plates (3214) are fixedly connected to the bottom walls of the inner surfaces of the plurality of conical holes (3215); a plurality of balls (3213) slidably connected to the inner walls of the conical holes (3215) are provided on the upper parts of the plurality of spring plates (3214); and an auxiliary hole (3212) is provided in the middle part of the upper end of the cross bearing platform (3211).

3. A press-fitting device for a brushless motor stator and rotor according to claim 1, characterized in that: The rotor fixing component (626) comprises a mounting block (6261) fixedly connected to the lower end of the central shaft (621); the outer surface of the mounting block (6261) is provided with a plurality of receiving grooves (6262) distributed in an annular manner; a plurality of the receiving grooves (6262) are provided with ejector pin grooves (6263) on a side away from the outer surface of the mounting block (6261); the inner surfaces of the plurality of ejector pin grooves (6263) are slidably connected with spring ejector pins (6264); and the lower portion of the inner surface of the receiving groove (6262) is rotatably connected with a support rod (6265).

4. A press-fitting device for a brushless motor stator and rotor according to claim 3, characterized in that: The bottom of the inner surface of the spring ejector pin (6264) is an inclined surface. When the support rod (6265) is outside the spring ejector pin (6264), its maximum outer diameter is much larger than the outer diameter of the central axis (621). The inner side of the spring ejector pin (6264) can completely accommodate the support rod (6265).

Images