Full-automatic rotor bearing press fitting machine

Abstract

The application discloses a full-automatic rotor bearing press-fit machine, which has the advantages of high automation, accurate clamping protection of the rotor, strong support compression resistance and good adaptability. The press-fit machine realizes automatic transmission and positioning of the rotor by using a chain plate transmission mechanism and a temporary stopover platform, greatly improving the production efficiency. The first and second synchronous tightening members are used to realize self-centering clamping of the rotor core winding and the spacer section, effectively avoiding the inclination and deformation of the core shaft during the press-fit process. The resistance rod of the pushing execution member and the pneumatic telescopic member can provide additional support for the core shaft during the press-fit process. In addition, the winding shaping mechanism can shape the core winding before the rotor press-fit. The relative positions of some components, such as the resistance rod, can be adjusted, so that the press-fit machine can adapt to rotors of different specifications. In summary, the application has significant advantages in improving production efficiency, ensuring product quality and adaptability, and helps to promote the technological progress of the motor manufacturing industry.

Description

Technical Field

[0001] This invention belongs to the field of electric motor manufacturing technology, and in particular to a fully automatic rotor bearing press-fitting machine. Background Technology

[0002] Our company manufactures small-power rotors primarily for use in various power tools, such as handheld grinders, pistol drills, and cutting machines, as well as smaller devices like electric screwdrivers. These rotors are small in size and have a compact structure, such as... Figure 1 As shown. Because low-power rotors do not require a large amount of heat dissipation space, the gaps between them after being installed in the housing are also very small, thus achieving a compact size. However, after the rotor is wound, the windings often show a certain degree of bulge at both ends, mainly concentrated in... Figure 1 The front bulge T1 and rear bulge T2 are located in the rotor. These bulges are prone to interference with the outer casing, causing frictional noise during rotation. Therefore, they need to be shaped before assembly. In contrast, relatively high-power rotors do not require shaping because they need to reserve more space for heat dissipation.

[0003] refer to Figure 1 On the other hand, the rotor bearings are press-fitted with an interference fit. Because the core diameter of the low-power rotor is small, the other end face, which serves as the stress point during bearing press-fitting, is far away, creating a long lever arm. This can easily lead to deflection and bending in the middle part of the rotor. This bending directly affects the stable operation and service life of the equipment.

[0004] In the prior art, such as the press-fitting equipment for motor rotors disclosed in patent publication number CN114734233B, a rotor bearing assembly device and method are described. The core of this technical solution is to support the core shaft by inserting a mandrel into the lower end of the core shaft, thus preventing deformation at the middle or weak points of the core shaft during bearing assembly. However, this method requires a very high degree of concentricity between the mandrel and the core shaft; otherwise, misalignment between the pressing and supporting forces can still easily lead to bending deformation of the core shaft. Therefore, it is necessary to research a bearing press-fitting machine more suitable for low-power rotors to solve the problems existing in the prior art.

[0005] Furthermore, there are many machines on the market that can perform bearing press-fitting. For example, an automatic motor bearing installation machine (authorized publication number CN110011488B) requires bearings to be press-fitted at both ends of the rotor. After pressing the bearing at one end, the rotor's shape changes, making rotor reversal more difficult. Therefore, fully automatic press-fitting equipment typically requires a press-fitting mechanism and a bearing feeding mechanism at each end of the rotor. This arrangement results in a larger overall size of the press-fitting equipment, increasing economic investment.

[0006] To solve the above problems, the present application aims to provide a more concise, economical and efficient rotor bearing press-fit equipment to improve the accuracy of rotor bearing press-fit, reduce the size and cost of the equipment, and further improve the stable operation and service life of the equipment. Through the research and development of new assembly method and press-fit mechanism, the press-fit work of rotor bearing can be completed in a more compact equipment, thereby reducing the size and cost of the overall equipment. At the same time, the new assembly method and press-fit mechanism can ensure high-quality bearing press-fit effect, reduce the error in the bearing installation process, improve the reliability and service life of the equipment. This concise, economical and efficient rotor bearing press-fit equipment will help to improve production efficiency, reduce production cost, improve product quality and market competitiveness in the production of electric tools and other equipment. SUMMARY

[0007] The present application aims to solve the above problems, and provides a full-automatic rotor bearing press-fit machine, which can avoid the inclination and deformation of the core shaft, solve the problem of small power rotor winding shaping, improve the press-fit precision, reduce the size and cost of the equipment, and further ensure the stable operation and service life of the equipment.

[0008] The application aims to achieve the following technical solutions: a full-automatic rotor bearing press-fit machine, before installing the bearing, the structure of the rotor includes a core shaft, a core winding and a commutator; the bearing press-fit machine includes a rack, a chain plate transmission mechanism located above the rack, a horizontal seat fixed on the rack, a jig mounting seat installed on the horizontal seat, a self-centering clamping jig fixed on the jig mounting seat, a press-in mechanism located at one end of the self-centering clamping jig, an opposite supporting mechanism located at the other end of the self-centering clamping jig, a temporary stopover platform located between the opposite supporting mechanism and the self-centering clamping jig, a transition slide between the temporary stopover platform and the chain plate transmission mechanism, and a discharging grabbing device located above the self-centering clamping jig; the center axis of the self-centering clamping jig main body is in a horizontal, coincident and collinear state with the center axes of the press-in mechanism and the opposite supporting mechanism working action part; the self-centering clamping jig includes a jig base body with a cylindrical hollow structure, the cylindrical wall has a plurality of symmetrically arrayed openings, the jig base body is suspended and fixed on the base body fixing seat above the jig mounting seat in a horizontal axis manner, and the position of the opening in the jig base body is provided with a first synchronous tightening member for self-centering tightening of the core winding.

[0009] As preferred, the first synchronous tightening member comprises a guide slot in the wall thickness range of each opening in the jig base, the guide slot is arranged from high to low relative to the center axis along the direction from the opposite supporting mechanism to the press-in mechanism; each opening is movably provided with a first tightening member in sliding fit with the guide slot; each first tightening member is fixedly connected with a driving cylinder while in sliding fit with the peripheral surface of the jig base; the opposite supporting mechanism comprises an execution member and a power source for pushing the execution member; during operation, the chain plate transmission mechanism operates to make one of the rotors fall into the transition slide and slide to the temporary stopover platform, then the execution member is pushed by the power source to push the rotor into the self-centering clamping jig, and the execution member is pressed against the driving cylinder, the driving cylinder drives all the first tightening members to move simultaneously to clamp the core winding segment in a self-centering manner, the press-in mechanism operates to press a bearing into one end of the core shaft, at the same time, the execution member keeps the driving cylinder in a forward tendency, which counteracts the pressing action of the press-in mechanism to offset part of the stress of the rotor pressing the bearing, thereby avoiding the inclination and deformation of the core shaft.

[0010] As preferred, a winding shaping mechanism is arranged between the self-centering clamping jig and the temporary stopover platform; the winding shaping mechanism comprises an axial sliding assembly mounted on the jig mounting seat, a radial sliding assembly mounted on the axial sliding assembly, and a clamping head mounted on the radial sliding assembly.

[0011] As preferred, the radial sliding assembly comprises a power motor, a double-head reverse screw in transmission connection with the power motor, and two carrier plates in threaded fit with one end of the double-head reverse screw respectively, the clamping head has a circular arc notch, is mounted on the two carrier plates respectively, and the notch faces inward.

[0012] As preferred, the second synchronous tightening member further comprises a second tightening member hingedly arranged in each through hole, and an elastic member arranged in the waist groove.

[0013] As preferred, after installation of each second tightening member, part of it exceeds the outer peripheral surface of the expansion seat, the exceeding part has a trigger slope towards the mounting portion side, and a flip avoiding notch is arranged on the side opposite to the trigger slope.

[0014] As preferred, the power source of the second synchronous tightening member is the movement of the driving cylinder, the end surface of the driving cylinder towards the press-in mechanism side pushes the trigger slope to make each second tightening member simultaneously displace towards the center to clamp the partition segment.

[0015] As preferred, the center of the pushing execution member is provided with a resistance rod, when the execution member is pressed against the driving cylinder and all the first tightening members clamp the core winding segment, the end surface of the resistance rod just touches the end surface of the core shaft towards that side.

[0016] As a preferred, the resistance rod is arranged to be adjustable in relative position in the pushing executive member, and a locking screw is arranged in the pushing executive member to press the resistance rod.

[0017] As a preferred, a pneumatic telescopic member is arranged to be fixedly arranged from radial telescopic to loosen the iron core shaft near the outer surface of the working face of the pushing executive member.

[0018] In summary, the present application has the following advantages compared with the prior art:

[0019] 1. High degree of automation: The press fitting machine realizes automatic transmission and positioning of the rotor through components such as chain plate transmission mechanism, transition slide, temporary stopover platform, etc., greatly improving production efficiency.

[0020] 2. Accurate clamping and protection of the rotor: The first and second synchronous tightening members realize self-centering clamping of the rotor core winding and the spacer section, effectively avoiding the inclination and deformation of the iron core shaft during press fitting.

[0021] 3. Enhanced support and pressure resistance: The resistance rod of the pushing executive member can provide additional support to the iron core shaft during press fitting, reducing the impact of pressure on the iron core shaft.

[0022] 4. Winding shaping function: The winding shaping mechanism can shape the iron core winding in two dimensions while the rotor bearing is press fitted, improving product quality.

[0023] 5. Flexibility and adaptability: The relative position of some components such as the resistance rod can be adjusted, making the press fitting machine adaptable to different specifications of the rotor.

[0024] In summary, the full-automatic rotor bearing press fitting machine has significant advantages in improving production efficiency, ensuring product quality and adaptability, which helps to promote the technological progress of the motor manufacturing industry. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of a rotor;

[0026] Figure 2 is a structural schematic diagram of the present application;

[0027] Figure 3 is a structural schematic diagram of the present application from another angle;

[0028] Figure 4 is Figure 3 is a partial enlarged view of position A in FIG. 6;

[0029] Figure 5 is a structural schematic diagram of the combination of the self-centering clamping jig, the press-in mechanism and the counter-supporting mechanism;

[0030] Figure 6The exploded view of the self-centering clamping fixture and the opposite supporting mechanism combined with part of the components;

[0031] Figure 7 The structure diagram of the second synchronous tightening member is partially cut open;

[0032] Figure 8 The exploded view of the self-centering clamping fixture and the opposite supporting mechanism combined with part of the components from another angle.

[0033] Markings in the figure:

[0034] Bearing mounting part 001, partition section 002, rotor 01, core shaft 02, core winding 03, commutator 04, set screw 06, turntable 07, rack 10, horizontal seat 20, fixture mounting seat 30, self-centering clamping fixture 40, fixture base 41, base fixing seat 42, guide slot 101, first tightening member 102, driving cylinder 411, contact part 412, containing hole 421, elastic return member 422, pressing mechanism 50, opposite supporting mechanism 60, pushing execution member 61, power source 62, resistance rod 63, pneumatic telescopic member 64, temporary stopover platform 70, first synchronous tightening member 100, second synchronous tightening member 200, chain plate transmission mechanism 90, expansion seat 201, mounting part 202, waist groove 204, second tightening member 205, elastic member 206, trigger inclined surface 207, avoidance gap 208, transition slide 80, unloading grabbing device 300, clamping head 120, winding shaping mechanism 110, axial sliding assembly 111, radial sliding assembly 112, power motor 113, double-head reverse screw 114, carrying plate 115. DETAILED DESCRIPTION

[0035] The application will be further described below in conjunction with the embodiments shown in the accompanying drawings: in conjunction with referring to all the drawings

[0036] Example 1

[0037] As Figures 1-8 shown, the application discloses a full-automatic rotor bearing press-fitting machine, which can solve the problems related to the rotor 01 that may occur during the installation of the bearing. Before the installation of the bearing, the structure of the rotor 01 is as shown in Figure 1 , which includes a core shaft 02, a core winding 03 and a commutator 04. The press-fitting machine adopts these structures and is provided with synchronous tightening members at different radial positions. At the same time, the press-fitting machine is provided with a winding shaping mechanism, which provides a force opposite to the direction of the acting force together with the tightening members during the press-fitting action of the bearing. This makes the rotor form a whole and plays a role in dispersing and offsetting the force of the workpiece (rotor) pressing the bearing, thereby avoiding the inclination and deformation of the core shaft.

[0038] The bearing press mounting machine comprises a rack 10, a chain plate transmission mechanism 90 above the rack, a horizontal seat 20 fixed on the rack 10, a jig mounting seat 30 mounted on the horizontal seat 20, a self-centering clamping jig 40 fixed on the jig mounting seat 30, a pressing mechanism 50 arranged at one end of the self-centering clamping jig 40, an opposite supporting mechanism 60 arranged at the other end of the self-centering clamping jig 40, a temporary stopover platform 70 between the opposite supporting mechanism 60 and the self-centering clamping jig 40, a transition slide 80 between the temporary stopover platform 70 and the chain plate transmission mechanism 90, and a discharging grabbing device 300 above the self-centering clamping jig 40. The central axis of the main body of the self-centering clamping jig 40 is horizontal, coincident and collinear with the central axes of the working action parts of the pressing mechanism 50 and the opposite supporting mechanism 60.

[0039] The pressing mechanism 50 adopts a pressing mechanism commonly used in the bearing pressing process in the prior art.

[0040] The self-centering clamping jig 40 comprises a jig base body 41 in a cylindrical hollow structure, and a plurality of symmetrically arrayed openings are arranged on the cylinder wall. The jig base body 41 is suspended and fixed on a base body fixing seat 42 above the jig mounting seat 30 in a horizontal axis manner. The position of the opening in the jig base body 41 is provided with a first synchronous tightening member 100 for self-centering tightening of the core winding 03.

[0041] The first synchronous tightening member 100 comprises a guide slot 101 in the wall thickness range of each opening in the jig base body 41, which is arranged from high to low with respect to the central axis along the direction from the opposite supporting mechanism 60 to the pressing mechanism 50. A first tightening piece 102 is movably arranged in each opening and forms a sliding fit with the guide slot 101. Each first tightening piece 102 is fixedly connected with a driving cylinder 411 while slidingly fitting with the outer peripheral surface of the jig base body 41. The opposite supporting mechanism 60 comprises an execution member 61 and a power source 62 for pushing the execution member 61.

[0042] In the working process, the chain plate transmission mechanism 90 operates, so that one of the rotors 01 falls into the transition slide 80 and slides to the temporary stopover platform 70. Then, the execution member 61 is pushed into the self-centering clamping jig 40 under the pushing of the power source 62, and the execution member 61 is pressed against the driving cylinder 411. The driving cylinder 411 drives all the first tightening pieces 102 to move simultaneously, so as to clamp the core winding 03 segment of the rotor 01 in a self-centering manner. The pressing mechanism 50 operates to press a bearing to one end of the core shaft 02. At the same time, the execution member 61 keeps the driving cylinder 411 in a forward tendency, which counteracts the pressing action of the pressing mechanism 50 and offsets the bearing pressing force of the workpiece (rotor), so as to avoid the inclination and deformation of the core shaft.

[0043] In order to shape the winding of the rotor 01, refer to Figures 4-6A winding shaping mechanism 110 is arranged between the self-centering clamping jig 40 and the temporary stop station 70. The winding shaping mechanism 110 includes an axial sliding assembly 111 mounted on the jig mounting base 30, a radial sliding assembly 112 mounted on the axial sliding assembly 111, and a clamping head 120 mounted on the radial sliding assembly 112. The radial sliding assembly 112 includes a power motor 113, a double-head reverse screw 114 in transmission connection with the power motor 113, and two carrier plates 115 threadedly connected with one end of the double-head reverse screw 114, as shown in Figure 8

[0044] In operation, the power motor 113 drives the double-head reverse screw 114 to rotate, thereby driving the two carrier plates 115 to synchronously shrink or expand. This enables the clamping head 120 to shape the winding part corresponding to the rotor 01. The axial sliding assembly 111 provides two-dimensional action for shaping. The shaping principle is that the action stroke of the counter-support mechanism 60 provides a reverse force, i.e., after the driving cylinder 411 is pressed against the clamping head 120, the clamping head 120 is pressed against the driving cylinder 411. In this process, the clamping head 120 is radially clamped while being axially shaped on the winding part.

[0045] Referring to Figure 1 , the core shaft 02 is a stepped shaft, and the bearing mounting portions 001 at both ends have relatively large diameter spacer segments 002 close to the center side. The spacer segments 002 and the bearing mounting portions 001 form a step for positioning the bearings after the final press-fitting.

[0046] As shown in Figures 2-8 , in order to increase the force of self-centering tightening and further disperse the impact force of the press-fitting mechanism 50 during press-fitting, a second synchronous tightening member 200 is arranged on the side of the jig base 41 close to the press-fitting mechanism 50. The second synchronous tightening member 200 is for self-centering tightening at the position of the spacer segment 002.

[0047] The second synchronous tightening member 200 includes an expansion seat 201 in detachable fixed connection with the jig base 41. The expansion seat 201 is in overall cylindrical shape, has a through hole in the center, and the side facing the jig base 41 is in outward expansion form. The outer circumferential surface of this side is provided with a mounting portion 202 connected with the jig base 41, and the outer circumferential surface of the end away from the mounting portion 202 is circumferentially arrayed with a plurality of through holes 203, and a waist groove 204 for hinged mounting is arranged in the through hole 203.

[0048] ​The second synchronous tightening member 200 further comprises a second tightening member 205 hingedly arranged in each through hole 203, and an elastic member 206 arranged in the waist groove 204. The elastic member 206 functions to push each second tightening member 205 away from the center by a certain distance, so that the spacer segment 002 has a certain gap with the working surface of each second tightening member 205 when the rotor 01 is pushed into the self-centering clamp jig 40.

[0049] After installation, each second tightening member 205 partially exceeds the outer circumferential surface of the expansion seat 201, and the exceeding part has a trigger slope 207 toward the mounting portion 202 side, and a flip avoidance notch 208 is arranged on the side opposite to the trigger slope 207.

[0050] The power source of the second synchronous tightening member 200 is the movement of the driving cylinder 411. The end surface of the driving cylinder 411 on the side toward the pressing mechanism 50 pushes the trigger slope 207, so that each second tightening member 205 simultaneously moves toward the center and clamps the spacer segment 002.

[0051] When the rotor 01 is to be withdrawn after one end of the bearing is pressed, the diameter of the bearing is much larger than the through diameter formed by each second tightening member 205. The hinged arrangement of the second tightening member 205, the outer expansion through hole of the expansion seat 201, and the flip avoidance notch 208 are three technical features that assist the rotor 01 to complete the withdrawal. When the bearing touches the second tightening member 205, the second tightening member 205 has space for flipping inside the outer expansion through hole, and also has space for flipping outside the flip avoidance notch 208, so the rotor 01 can be smoothly withdrawn.

[0052] In order to increase the counteracting force of the core shaft 02, the center of the pushing executive member 61 is provided with a counteracting rod 63. After the executive member 61 presses the driving cylinder 411 and clamps the core winding 03 segment by all the first tightening members 102, the end surface of the counteracting rod 63 just touches the end surface of the core shaft 02 on that side. In this way, the stress point is increased, and the stress of the workpiece (rotor) pressing the bearing is further dispersed and offset.

[0053] In order to expand the application range of the device, the counteracting rod 63 is arranged to be adjustable in relative position in the pushing executive member 61. In this way, the device can be applied to rotors 01 of different sizes and lengths within a certain range. In order to improve the stability of the counteracting rod 63, the counteracting rod 63 can be threadedly connected with the pushing executive member 61, and a locking screw 06 is arranged in the pushing executive member 61 to press the counteracting rod 63.

[0054] Through this design, the pressing machine can not only adapt to rotors of different sizes and lengths, but also provide stable counteracting force during pressing, ensuring that the rotor does not tilt and deform when pressing the bearing, and improving the pressing quality and the application range of the equipment.

[0055] In order to make the counter support mechanism 60 have the function of retracting the rotor 01, a pneumatic telescopic member 64 is fixedly arranged on the outer surface near the working face of the pushing implement 61 (i.e. the end face contacted by the driving cylinder 411), which is telescopic in the radial direction to loosen the iron core shaft 02. When the pressing-in mechanism 50 completes the pressing-in of the bearing at one end, the pneumatic telescopic member 64 extends to press the iron core shaft 02, the pushing implement 61 retreats, and the rotor 01 is retracted to the temporary parking platform 70.

[0056] In order to facilitate the pressing-in of the bearing at the other end face of the rotor 01, a rotary table 07 is arranged, and the temporary parking platform 70 is fixedly arranged on the rotary table 07. When the pressing-in of the bearing at one end is completed, the support mechanism 60 retracts the rotor 01 to the temporary parking platform 70, and the rotary table 07 is started to rotate by 180 degrees. The support mechanism 60 pushes the rotor 01 into the self-centering clamping jig 40 again, and the pressing-in steps described above are repeated to complete the pressing-in of the bearing at the other end.

[0057] Through this design, the counter support mechanism 60 not only provides stable counteracting force, but also realizes the retraction and re-pushing of the rotor during the pressing-in process, which facilitates the pressing-in of the bearing at the other end face. The rotary table 07 is arranged, and the temporary parking platform 70 is fixedly arranged thereon, which realizes the quick switching of the rotor 01 during the pressing-in of the bearings at both ends, and improves the pressing-in efficiency.

[0058] In order to better and smoothly retract the rotor 01 from the self-centering clamping jig 40, the driving cylinder 411 is designed to automatically return to the original position when the external force is lost. For this purpose, the driving cylinder 411 is provided with a contact portion 412 at least on one side corresponding to the base fixed seat 42. A receiving hole 421 is arranged on the base fixed seat 42 corresponding to the position of the contact portion 412. An elastic return member 422 is arranged in the receiving hole 421. The free end of the elastic return member 422 is in contact with the contact portion 412.

[0059] When the external force of the driving cylinder 411 is removed, the elastic return member 422 helps the driving cylinder 411 to return to the original position. In this way, the first and second synchronous tightening members 100 and 200 are loosened from the rotor 01. This design can ensure that the rotor 01 is smoothly retracted from the self-centering clamping jig 40 after the pressing-in process is completed, and improves the working efficiency and safety of the whole device.

[0060] Referring to all the drawings, the working steps of the rotor pressing-in bearing device are as follows:

[0061] S1. The chain plate conveying mechanism 90 places the rotor 01 to be pressed-in on the temporary parking platform 70 through the transition ladder 80.

[0062] S2. The execution member 61 pushes the rotor 01 into the self-centering clamping fixture 40 under the impetus of the power source 62. The winding shaping mechanism 110 shapes the winding portion of the rotor, and the execution member 61 pushes against the clamping head 120 to push the further shaping and also to push the driving cylinder 411 to act.

[0063] S3. The driving cylinder 411 drives all the first tightening members 102 and the second tightening members 205 to act simultaneously. All the first tightening members 102 clamp the core winding 03 segment of the rotor 01 in a self-centering manner; at the same time, the second tightening members 205 also displace towards the center to clamp the partition segment 002. Meanwhile, the end face of the resistance rod 63 abuts against the end face of the core shaft 02 towards the side, increasing the stress point and further dispersing and offsetting the stress of the workpiece (rotor) pressing the bearing.

[0064] S4. The pressing-in mechanism 50 acts to press one bearing to the core shaft 02 at one end. The execution member 61 makes the driving cylinder 411 maintain the tendency of advancing, which makes the rotor 01 have stronger integrity in the foregoing steps, and forms a counterforce with the pressing-in action of the pressing-in mechanism 50 to offset the stress of the workpiece (rotor) pressing the bearing and avoid the core shaft from tilting and deforming.

[0065] S5. When the pressing-in of one end is completed, the clamping head 120 of the winding shaping mechanism 110 is loosened in the radial direction, the pneumatic telescopic member 64 extends to press the core shaft 02, the execution member 61 retreats, at the same time, the driving cylinder 411 loses the external force and automatically rebounds to reset, the winding shaping mechanism 110 resets in the axial direction, and the first synchronous tightening member 100 and the second synchronous tightening member 200 are loosened to the rotor 01, so as to facilitate the rotor 01 to exit from the self-centering clamping fixture 40. The rotor 01 is dragged out to the temporary parking platform 70 again with the retreat of the execution member 61.

[0066] S6. The rotary table 07 is started to rotate by 180 degrees. The support mechanism 60 pushes the rotor 01 into the self-centering clamping fixture 40 again to repeat the foregoing pressing-in steps to complete the pressing-in of the second end.

[0067] S7. The unloading grabbing device 300 takes the rotor with the bearing pressed in and the winding shaped at both ends from the rotary table 07 and puts it into the turnover frame.

[0068] This working step flow describes the whole operation process of the rotor bearing pressing-in device, which ensures that the bearings at both ends of the rotor are successfully pressed in and protects the structure of the rotor from being damaged by the pressure. The device has reasonable structure and is convenient to operate, which effectively improves the efficiency and accuracy of the rotor bearing pressing-in.

[0069] Embodiment 2:

[0070] In one specific embodiment, the rotor press-fit bearing device can be applied in the field of generators or motors, etc. for quickly and accurately press-fitting bearings at both ends of the rotor. The following is a detailed embodiment:

[0071] A wind turbine manufacturer needs to install a rotor press-fit bearing device on its production line. The main components of the device include a chain plate transmission mechanism 90, a transition slide 80, a temporary docking station 70, a self-centering clamping jig 40, a winding shaping mechanism 110, a press-in mechanism 50, a counter support mechanism 60, a turntable 07, and a discharging grabbing device 300.

[0072] First, the chain plate transmission mechanism 90 places the rotor 01 to be press-fit with bearings on the temporary docking station 70 through the transition slide 80. Then, the pushing executive part 61 of the counter support mechanism 60 pushes the rotor 01 into the self-centering clamping jig 40 under the action of the power source 62. The winding shaping mechanism 110 shapes the winding part of the rotor, and the executive part 61 presses against the clamping head 120 to push for further shaping. At the same time, the executive part 61 also pushes the driving cylinder 411 to act.

[0073] The driving cylinder 411 drives all the first tightening members 102 and the second tightening members 205 to act simultaneously. The first tightening members 102 clamp the core winding 03 segment of the rotor 01 in a self-centering manner; at the same time, the second tightening members 205 displace towards the center to clamp the spacer segment 002. The end face of the resistance rod 63 abuts against the end face of the core shaft 02 towards this side, increasing the stress point and further dispersing the stress of the workpiece (rotor) press-fitting bearings.

[0074] Next, the press-in mechanism 50 acts to press-fit a bearing pair to the core shaft 02 at one end. The driving cylinder 411 is kept in a forward trend by the executive part 61 to offset the stress of the rotor press-fitting bearings, avoiding the inclination and deformation of the core shaft.

[0075] After completing the press-fitting of the bearings at one end, the clamping head 120 of the winding shaping mechanism 110 is loosened in the radial direction, the pneumatic telescopic member 64 is extended to press the core shaft 02, and the pushing executive part 61 retreats. At the same time, the driving cylinder 411 automatically returns to its original position without external force, and the first and second synchronous tightening members 100 and 200 are loosened from the rotor 01. The rotor 01 is dragged out to the temporary docking station 70 again as the pushing executive part 61 retreats.

[0076] The rotating table 07 is started to rotate 180 degrees, and the supporting mechanism 60 pushes the rotor 01 into the self-centering clamping jig 40 again, and the aforementioned pressing step is repeated to complete the pressing of the second end. After the pressing of the second end bearing is completed, the clamping head 120 of the winding shaping mechanism 110 is loosened radially again, the pneumatic telescopic piece 64 extends to press the core shaft 02, and the pushing member 61 retreats. At the same time, the driving cylinder 411 loses external force and automatically returns to its original position, and the first and second synchronous tightening mechanisms 100 and 200 are loosened. At this time, the rotor 01 has completed the pressing of the bearings at both ends and the shaping of the winding.

[0077] Finally, the unloading grabbing device 300 takes the rotor with completed bearing pressing and winding shaping from the rotating table 07 and places it into the turnover frame. The entire process realizes efficient and accurate bearing pressing, greatly improving the production efficiency and quality of the wind turbine rotor.

[0078] This embodiment demonstrates a rotor bearing pressing device with automation, high efficiency and accuracy, which is suitable for wind turbines and other fields. By adopting the self-centering clamping jig, winding shaping mechanism, pressing mechanism and opposite supporting mechanism, efficient pressing of the rotor bearing is realized, and the inclination and deformation of the core shaft are avoided. In addition, the device also has good universality and adaptability, and can be applied to rotors of different sizes and lengths within a certain range, meeting the needs of various application scenarios.

[0079] Embodiment 3:

[0080] In another embodiment, the rotor bearing pressing device of the present application can be applied to the production line of automobile motor rotors. In this embodiment, the structure of the rotor bearing pressing device is basically the same as that of the previous embodiment, but the size of each part is adjusted to adapt to the characteristics of the automobile motor rotor.

[0081] In order to adapt to different types of automobile motor rotors, the self-centering clamping jig 40 in this embodiment can be adjusted as needed to adapt to rotors of different sizes. The winding shaping mechanism 110 can also be adjusted according to the winding characteristics of different rotors to achieve higher winding shaping quality.

[0082] In order to improve production efficiency, the chain plate conveying mechanism 90 and the temporary stopover station 70 in this embodiment can be replaced by a conveyor belt. In this scheme, the rotor to be pressed with bearings is automatically sent to the working area of the self-centering clamping jig 40 by the conveyor belt. During the pressing of the bearings, the rotor is firmly clamped by the self-centering clamping jig 40 to ensure the accuracy of the bearing pressing.

[0083] In addition, the pressing mechanism 50 in this embodiment can be driven by a servo motor to improve the controllability and stability of the pressing force. By precisely controlling the speed and force of the servo motor, more accurate bearing pressing can be achieved.

[0084] During the entire pressing process, the position of the rotor, clamping force, and pressing force can be monitored in real time by sensors and monitoring systems installed on the device. These parameters can be fed back to the control system in real time, allowing for automatic adjustment and optimization of the pressing process and improving the quality of the pressing.

[0085] After the pressing is completed, the pressed rotor can also be transported to the next process, such as balance verification and testing, by using a conveyor belt. The automation level of the entire production line is further improved, greatly improving production efficiency and product quality.

[0086] This embodiment demonstrates the application of a rotor bearing pressing device in the field of automobile electric motors. By adjusting the dimensions of each part and using more advanced control systems, efficient and accurate bearing pressing is achieved, meeting the needs of automobile electric motor rotor production lines.

[0087] The specific embodiments described in this document are merely illustrative of the spirit of the invention. Those skilled in the art of the invention can make various modifications or supplements to the described specific embodiments or use similar ways to replace them without deviating from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A fully automatic rotor bearing press-fitting machine, wherein before the bearing is installed, the rotor (01) has a structure including a core shaft (02), a core winding (03), and a commutator (04), wherein the core shaft (02) is a stepped shaft, and the bearing mounting portions (001) at both ends have relatively large diameter partition sections (002) near the center; characterized in that, The bearing press-fitting machine includes a frame (10), a chain conveyor mechanism (90) located above the frame, a horizontal seat (20) fixed on the frame (10), a fixture mounting seat (30) mounted on the horizontal seat (20), a self-centering clamping fixture (40) fixed on the fixture mounting seat (30), a pressing mechanism (50) located at one end of the self-centering clamping fixture (40), a counter-support mechanism (60) located at the other end of the self-centering clamping fixture (40), a temporary resting platform (70) located between the counter-support mechanism (60) and the self-centering clamping fixture (40), a transition slide (80) between the temporary resting platform (70) and the chain conveyor mechanism (90), and a... The unloading gripping device (300) above the self-centering clamping fixture (40); the central axis of the main body of the self-centering clamping fixture (40) is horizontal, coincident, and collinear with the central axis of the working part of the pressing mechanism (50) and the opposing support mechanism (60); the self-centering clamping fixture (40) includes a fixture base (41) with a cylindrical hollow structure, and multiple symmetrical array openings on the cylindrical wall. The fixture base (41) is suspended and fixed on the base fixing seat (42) above the fixture mounting seat (30) in a horizontal manner. The opening in the fixture base (41) is provided with a first synchronous tightening member (100) for self-centering tightening of the iron core winding (03). The first synchronous tightening member (100) includes a guide slot (101) located within the wall thickness range of each opening in the fixture base (41). The guide slot (101) is arranged from high to low relative to the central axis along the direction from the opposing support mechanism (60) to the pressing mechanism (50). A first tightening member (102) is movably provided in each opening to form a sliding fit with the guide slot (101). While slidingly fitting with the outer peripheral surface of the fixture base (41), each first tightening member (102) is fixedly connected to the drive cylinder (411). The opposing support mechanism (60) includes an actuator (61) and a power source (62) for the propulsion actuator (61). During operation, the chain plate transmission mechanism (90) operates, causing one of the rotors (0 1) The rotor (01) falls into the transition slide (80) and slides to the temporary docking platform (70). Then, the actuator (61) pushes the rotor (01) into the self-centering clamping fixture (40) under the drive of the power source (62), and the actuator (61) presses against the drive cylinder (411). The drive cylinder (411) drives all the first tightening members (102) to move simultaneously, clamping the iron core winding (03) section of the rotor (01) in a self-centering manner. The pressing mechanism (50) operates and presses a bearing onto one end of the iron core shaft (02). At the same time, the actuator (61) keeps the drive cylinder (411) moving forward. This trend counteracts the pressing action of the pressing mechanism (50), offsetting part of the force on the rotor pressing the bearing, thereby preventing the iron core shaft from tilting and deforming.

2. The fully automatic rotor bearing press-fitting machine according to claim 1, characterized in that, A winding shaping mechanism (110) is provided between the self-centering clamping fixture (40) and the temporary docking platform (70); the winding shaping mechanism (110) includes an axial sliding assembly (111) mounted on the fixture mounting base (30), a radial sliding assembly (112) mounted on the axial sliding assembly (111), and a clamping head (120) mounted on the radial sliding assembly (112).

3. The fully automatic rotor bearing press-fitting machine according to claim 2, characterized in that, The radial sliding assembly (112) includes a power motor (113), a double-headed reverse screw (114) connected to the power motor (113) for transmission, and two carrier plates (115) that are threaded to one end of the double-headed reverse screw (114). The clamping head (120) has an arc notch and is installed on the two carrier plates (115) with the notch facing inward.

4. The fully automatic rotor bearing press-fitting machine according to claim 3, characterized in that, A second synchronous tightening member (200) is provided on the side of the fixture base (41) near the pressing mechanism (50). The second synchronous tightening component (200) performs self-centering tightening at the position of the partition section (002); The second synchronous tightening member (200) includes an extension seat (201) that is detachably and fixedly connected to the fixture base (41). The extension seat (201) is cylindrical in shape and has a through hole in the center. The outer peripheral surface of the extension seat (201) is provided with a mounting part (202) that is connected to the fixture base (41). A plurality of through holes (203) are arranged in a circular array on the outer peripheral surface away from the mounting part (202). A waist groove (204) for hinged installation is provided in the through hole (203). The second synchronous tightening member (200) also includes a second tightening member (205) that is hinged in each through hole (203) and an elastic member (206) that is provided in the waist groove (204).

5. The fully automatic rotor bearing press-fitting machine according to claim 4, characterized in that, After installation, each of the second tightening members (205) extends beyond the outer peripheral surface of the extension base (201). The extended portion has a trigger ramp (207) on the side facing the mounting part (202), and a flip clearance notch (208) is provided on the side opposite to the trigger ramp (207).

6. The fully automatic rotor bearing press-fitting machine according to claim 5, characterized in that, The power source of the second synchronous tightening member (200) is the movement of the drive cylinder (411). The drive cylinder (411) pushes the triggering inclined surface (207) toward the end face of the pressing mechanism (50), so that each second tightening member (205) is simultaneously displaced toward the center, clamping the partition section (002).

7. The fully automatic rotor bearing press-fitting machine according to claim 6, characterized in that, The center of the propulsion actuator (61) is provided with a resistance rod (63). When the actuator (61) presses against the drive cylinder (411) and causes all the first tightening members (102) to clamp the iron core winding (03) section, the end face of the resistance rod (63) just touches the end face of the iron core shaft (02) facing that side.

8. The fully automatic rotor bearing press-fitting machine according to claim 7, characterized in that, The resisting rod (63) is configured to be adjustable in relative position within the propulsion actuator (61), and a set screw (06) is provided in the propulsion actuator (61) to press the resisting rod (63).

9. The fully automatic rotor bearing press-fitting machine according to claim 7, characterized in that, On the outer surface of the working surface of the propulsion actuator (61), a pneumatic telescopic member (64) is fixedly installed, which extends and retracts radially to tighten or loosen the iron core shaft (02).

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