Motor rotor bearing press fitting device

Abstract

The application provides a motor rotor bearing press-fitting device and belongs to the technical field of motor assembly. The device solves the problems of large floor space, low automation degree and low press-fitting precision of existing bearing press-fitting equipment. Two support blocks are slidably arranged on a rack, a V-shaped groove is formed between the two support blocks, the V-shaped groove is used for placing a motor rotor, the outer thread of an adjusting screw is screwed with the inner threads of the two support blocks, the inner threads of the two support blocks are opposite in direction, and a crank handle is fixedly connected with the adjusting screw. A hydraulic system comprises an oil tank, a hydraulic pump, a valve group and two hydraulic cylinders, the two hydraulic cylinders are communicated with the oil tank through the hydraulic pump and the valve group, the output ends of the two hydraulic cylinders are fixedly connected with two tool sleeves respectively, and the two tool sleeves are located on the two sides of a V-shaped adjusting tool. A control system comprises a control screen and a PLC controller, and the control screen, the hydraulic cylinders, the hydraulic pump and the valve group are connected with the PLC controller. The device has the advantages of compact structure, high press-fitting precision, high automation degree and convenient operation.

Description

Technical Field

[0001] This invention belongs to the field of motor assembly technology, and in particular relates to a motor rotor bearing press-fitting device. Background Technology

[0002] In the motor manufacturing industry, the installation of bearings on the motor rotor is a critical process that directly affects the motor's operational accuracy and service life. For motors with a center height of H132 and below, the bearings are sealed bearings, and currently, cold pressing is used to install them. Existing bearing cold pressing machines have the following drawbacks: First, it occupies a large area; a set of equipment, including the main body and hydraulic station, takes up a significant amount of space. Secondly, the degree of automation is low. For rotors of the same specifications, cold-pressed bearings still require repeated operations by workers, which is time-consuming and labor-intensive. Third, the control accuracy of pressing pressure and stroke is low, which can easily lead to problems such as bearing pressing being too tight or too loose, reducing the product qualification rate.

[0003] Therefore, there is an urgent need for a motor rotor bearing press-fitting device that has a small footprint and high press-fitting accuracy. Summary of the Invention

[0004] In view of this, in order to solve the problems of large footprint, low automation and low pressing accuracy of existing bearing pressing equipment, this invention proposes a motor rotor bearing pressing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A motor rotor bearing press-fitting device, comprising: frame; The V-type adjustment fixture includes two support blocks, an adjusting screw, and a rocker arm. The two support blocks are slidably mounted on the frame, and a V-groove is formed between the two support blocks. The V-groove is used to place the motor rotor. The external thread of the adjusting screw is screwed into the internal threads of the two support blocks. The internal threads of the two support blocks are in opposite directions. The rocker arm is fixedly connected to the adjusting screw. The hydraulic system includes an oil tank, a hydraulic pump, a valve assembly, and two hydraulic cylinders, which are connected to the oil tank via the hydraulic pump and the valve assembly. Two tooling sleeves are fixedly connected to the output ends of two hydraulic cylinders respectively, and the two tooling sleeves are located on both sides of the V-shaped adjustment tooling; The control system includes a control panel and a PLC controller. The control panel, hydraulic cylinders, hydraulic pumps, and valve groups are all connected to the PLC controller.

[0006] As a preferred embodiment of the above-mentioned motor rotor bearing press-fitting device, the motor rotor bearing press-fitting device further includes two guide structures, which are arranged one-to-one with two hydraulic cylinders. The guide structure includes a guide rod and a connecting piece. The guide rod extends in the horizontal direction, one end of the guide rod is fixedly set on the frame, one end of the connecting piece is slidably sleeved on the guide rod, and the other end is connected to the output end of the hydraulic cylinder.

[0007] As a preferred embodiment of the above-mentioned motor rotor bearing press-fitting device, the motor rotor bearing press-fitting device further includes a safety light curtain, which is fixedly installed on the frame.

[0008] As a preferred embodiment of the above-mentioned motor rotor bearing press-fitting device, the motor rotor bearing press-fitting device further includes an H-shaped disassembly slide, which is slidably mounted on the frame, and the hydraulic pump and valve group are mounted on the H-shaped disassembly slide.

[0009] As a preferred embodiment of the above-mentioned motor rotor bearing press-fitting device, the motor rotor bearing press-fitting device further includes a pressure gauge, which is connected to the hydraulic system and displays the pressure value in real time during the press-fitting process.

[0010] As a preferred embodiment of the aforementioned motor rotor bearing press-fitting device, the valve group adopts a proportional relief valve.

[0011] As a preferred embodiment of the aforementioned motor rotor bearing press-fitting device, the hydraulic pump is a variable displacement piston pump.

[0012] As a preferred embodiment of the aforementioned motor rotor bearing press-fitting device, the control panel adopts a touch-screen industrial display screen.

[0013] As a preferred embodiment of the aforementioned motor rotor bearing press-fitting device, the hydraulic cylinder is equipped with a displacement sensor.

[0014] As a preferred embodiment of the above-mentioned motor rotor bearing press-fitting device, the motor rotor bearing press-fitting device further includes a signal light, which is fixedly mounted on the frame and connected to a safety light curtain.

[0015] Compared with the prior art, the beneficial effects of the motor rotor bearing press-fitting device provided by the present invention are: (1) The motor rotor bearing press-fitting device has a compact structure: the built-in pump station eliminates the redundant space of external installation, improving the utilization rate of workshop space; the hydraulic pipeline length is shortened, reducing pressure loss and the number of pipeline joints, reducing the probability of hydraulic oil leakage, and the system stability is higher; the equipment has a high degree of integration, and there is no need to plan the installation position of the pump station, which makes it easy to move and adjust the layout as a whole with the equipment.

[0016] (2) The motor rotor bearing press-fitting device has high press-fitting accuracy: it is equipped with a displacement sensor, which can provide real-time feedback of displacement distance, and the servo hydraulic cylinder can achieve precise control of press-fitting stroke and pressure.

[0017] (3) The motor rotor bearing press-fitting device has a high degree of automation: the press-fitting parameters can be set in a visual manner and the equipment can be operated semi-automatically through the control system, which can replace manual press-fitting and greatly improve the assembly efficiency.

[0018] (4) The operation of the motor rotor bearing press-fitting device is convenient: the touch control screen simplifies the parameter setting process, and the pressure gauge provides real-time feedback of operating data, which facilitates monitoring and debugging by operators and reduces the skill requirements for operators. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the motor rotor bearing press-fitting device provided in a specific embodiment of the present invention from a first perspective. Figure 2 This is a schematic diagram of the motor rotor bearing press-fitting device provided in a specific embodiment of the present invention from a second perspective.

[0020] In the picture: 1. Frame; 2. Oil tank; 3. Hydraulic pump; 4. Hydraulic cylinder; 5. Guide rod; 6. Tooling kit; 7. Control panel; 8. Pressure gauge; 9. Safety light curtain; 10. Handle; 11. H-type disassembly slide; 12. Support block; 13. Motor rotor; 14. Bearing. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0022] See Figure 1-2This invention provides a motor rotor bearing press-fitting device, comprising: a frame 1, a V-shaped adjustment fixture, a hydraulic system, two fixture sleeves 6, and a control system. The V-shaped adjustment fixture includes two support blocks 12, an adjusting screw, and a crank handle 10. The two support blocks 12 are slidably disposed on the frame 1, forming a V-shaped groove between them for placing the motor rotor 13. The external thread of the adjusting screw is screwed to the internal thread of the two support blocks 12, and the internal threads of the two support blocks 12 are in opposite directions. The crank handle 10 is fixedly connected to the adjusting screw. The hydraulic system includes an oil tank 2, a hydraulic pump 3, a valve group, and two hydraulic cylinders 4. The two hydraulic cylinders 4 are connected to the oil tank 2 through the hydraulic pump 3 and the valve group. The output ends of the two hydraulic cylinders 4 are fixedly connected to the two fixture sleeves 6, which are located on both sides of the V-shaped adjustment fixture. The control system includes a control panel 7 and a PLC controller. The control panel 7, hydraulic cylinders 4, hydraulic pump 3, and valve group are all connected to the PLC controller.

[0023] In this motor rotor bearing press-fitting device, the oil tank 2 stores hydraulic oil, and the hydraulic cylinder 4 is a servo hydraulic cylinder 4, whose output end is fixedly connected to the tooling sleeve 6 to provide stable power for the press-fitting of the bearing 14. The V-shaped adjustment tooling is set on the worktable of the frame 1. When the crank handle 10 drives the adjusting screw to rotate, it can drive the two support blocks 12 to move horizontally, moving closer or further apart from each other, thereby adjusting the opening distance of the V-shaped groove between the two support blocks 12 to adapt to motor rotors 13 of different diameters. It can also adjust the height of the motor rotor 13, so that the central axis of the rotor is coaxial with the pin axis of the hydraulic cylinder 4. The operator can set parameters such as press-fitting pressure, press-fitting stroke, and holding time through the control panel 7. At the same time, different press-fitting templates can be set according to different rotor specifications to achieve semi-automatic press-fitting. The PLC controller controls the working status of the hydraulic pump 3 and valve group according to the preset parameters to achieve precise control of the pressure and stroke of the hydraulic cylinder 4, and can display the operating status and fault information of the equipment in real time.

[0024] Preferably, the motor rotor bearing press-fitting device further includes two guide structures, each corresponding to one of the two hydraulic cylinders 4. Each guide structure includes a guide rod 5 and a connecting member. The guide rod 5 extends horizontally, with one end fixed to the frame 1. One end of the connecting member is slidably fitted onto the guide rod 5, and the other end is connected to the output end of the hydraulic cylinder 4. The guide structures can restrict the horizontal movement of the output end of the hydraulic cylinder 4.

[0025] Preferably, the motor rotor bearing pressing device further includes a safety light curtain 9, which is fixedly installed on the frame 1. The safety light curtain 9 includes signal transmitting and receiving devices. When the motor rotor bearing pressing device is working automatically, if personnel enter the range of the safety light curtain 9, the safety light curtain 9 will sound an alarm and cause the motor rotor bearing pressing device to stop urgently, ensuring high safety.

[0026] Preferably, the motor rotor bearing press-fitting device further includes an H-shaped disassembly slide 11, which is slidably mounted on the frame 1. The hydraulic pump 3 and valve group are mounted on the H-shaped disassembly slide 11. The hydraulic station and the frame 1 are an integrated structure, which is more compact than traditional external pump stations. It is also equipped with the H-shaped disassembly slide 11, allowing for quick disassembly and maintenance when the pump station needs repair, making it convenient and efficient.

[0027] Preferably, the motor rotor bearing press-fitting device further includes a pressure gauge 8, which is connected to the hydraulic system to display the pressure value during the press-fitting process in real time. This facilitates monitoring by the operator.

[0028] Preferably, the valve assembly is a proportional relief valve. The hydraulic pump 3 is a variable displacement piston pump. The combination of the hydraulic pump 3 and the valve assembly with a variable displacement piston pump and a proportional relief valve allows for precise adjustment of the hydraulic system pressure, with a press-fit pressure adjustment range of 0–5 MPa.

[0029] Preferably, the control screen 7 is a touch-screen industrial display screen, which is electrically connected to the PLC controller, hydraulic pump 3 and valve group, and hydraulic cylinder 4.

[0030] Preferably, the hydraulic cylinder 4 is equipped with a displacement sensor. The displacement sensor on the hydraulic cylinder 4 can collect stroke data in real time.

[0031] Preferably, the motor rotor bearing press-fitting device further includes a signal light, which is fixedly mounted on the frame 1 and connected to the safety light curtain 9.

[0032] In this embodiment, the motor rotor bearing press-fitting device has a frame 1 made of welded steel with dimensions of 2800mm×700mm×1250mm; the hydraulic system uses a variable displacement piston pump model PV2R1-14, and the hydraulic cylinder 4 is a servo hydraulic cylinder with a pressure adjustment range of 0~5kN and a stroke control accuracy of ±1mm; the V-type adjustment fixture has an adjustment range of 50mm~300mm; the guide rod 5 is a φ14mm 45 steel optical shaft with a hard chrome plated surface; the control panel 7 is an 11-inch touch industrial screen; and the safety light curtain 9 is connected to the signal light, which will sound and light an alarm when personnel enter its range during semi-automatic press-fitting.

[0033] The motor rotor bearing press-fitting device can be used to manually or automatically press-fit the bearing 14 of the motor rotor 13.

[0034] For manual pressing: First, place the rotor to be pressed on the V-groove. Adjust the opening size of the V-groove using the crank handle 10 to align the rotor shaft with the hole of the tooling sleeve 6. Install the bearing 14 on the shafts on both sides of the rotor. Select the "manual" mode using the button box and press the pressing button. The hydraulic cylinder 4 drives the tooling sleeve 6 to retract inward under the constraint of the guide rod 5. After the tooling sleeve 6 is fitted onto the rotor shaft, it continues to retract inward until the bearing 14 is pressed to the designated position. Press the pressing completion button to control the hydraulic cylinder 4 to open the tooling sleeve 6 outward, thus completing one pressing of the rotor bearing 14.

[0035] During automatic pressing: switch the button on the operation button box to "automatic" mode. The height of the rotor is controlled by adjusting the opening size of the V-groove through the crank handle 10. The shrinkage stroke and speed of the tooling sleeve 6 can be set through the control panel 7. Press the pressing button, and the tooling sleeve 6 will automatically shrink inward according to the set stroke and speed. After pressing to the designated position, it will automatically open outward, thus completing one pressing of the rotor bearing 14.

[0036] The motor rotor bearing press-fitting device has a compact structure: the built-in pump station eliminates the redundant space of external installation, improving the utilization rate of workshop space; it shortens the length of hydraulic pipelines, reduces pressure loss and the number of pipeline joints, reduces the probability of hydraulic oil leakage, and makes the system more stable; the equipment has a high degree of integration, eliminating the need to plan the installation location of the pump station, and it can be moved and adjusted as a whole with the equipment.

[0037] The motor rotor bearing press-fitting device has high press-fitting precision: it is equipped with a displacement sensor that can provide real-time feedback on displacement distance, and the servo hydraulic cylinder 4 enables precise control of the press-fitting stroke and pressure.

[0038] The motor rotor bearing press-fitting device is highly automated: the press-fitting parameters can be set visually through the control system and the equipment can operate semi-automatically, which can replace manual press-fitting and greatly improve assembly efficiency.

[0039] The motor rotor bearing press-fitting device is easy to operate: the touch control screen 7 simplifies the parameter setting process, and the pressure gauge 8 provides real-time feedback of operating data, making it easy for operators to monitor and debug, and reducing the skill requirements for operators.

[0040] Obviously, the above-disclosed embodiments of the present invention are merely illustrative of the invention. The embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. It is neither necessary nor possible to exhaustively describe all embodiments herein.

Claims

1. A motor rotor bearing press-fitting device, characterized in that, include: Rack (1); V-type adjustment fixture, the V-type adjustment fixture includes two support blocks (12), an adjusting screw and a rocker arm (10). The two support blocks (12) are slidably set on the frame (1). A V-shaped groove is formed between the two support blocks (12). The V-shaped groove is used to place the motor rotor (13). The external thread of the adjusting screw is screwed to the internal thread of the two support blocks (12). The internal threads of the two support blocks (12) are in opposite directions. The rocker arm (10) is fixedly connected to the adjusting screw. The hydraulic system includes an oil tank (2), a hydraulic pump (3), a valve group and two hydraulic cylinders (4), which are connected to the oil tank (2) through the hydraulic pump (3) and the valve group; Two tooling sleeves (6) and the output ends of two hydraulic cylinders (4) are fixedly connected to the two tooling sleeves (6) respectively. The two tooling sleeves (6) are located on both sides of the V-shaped adjustment tooling. The control system includes a control panel (7) and a PLC controller. The control panel (7), hydraulic cylinder (4), hydraulic pump (3) and valve group are all connected to the PLC controller.

2. The motor rotor bearing press-fitting device according to claim 1, characterized in that: It also includes two guide structures, which are set one-to-one with two hydraulic cylinders (4). The guide structure includes a guide rod (5) and a connector. The guide rod (5) extends in the horizontal direction. One end of the guide rod (5) is fixedly set on the frame (1). One end of the connector is slidably sleeved on the guide rod (5), and the other end is connected to the output end of the hydraulic cylinder (4).

3. The motor rotor bearing press-fitting device according to claim 1, characterized in that: It also includes a safety light curtain (9), which is fixedly mounted on the frame (1).

4. The motor rotor bearing press-fitting device according to claim 1, characterized in that: It also includes an H-type disassembly slide (11), which is slidably mounted on the frame (1), and the hydraulic pump (3) and valve group are mounted on the H-type disassembly slide (11).

5. The motor rotor bearing press-fitting device according to claim 1, characterized in that: It also includes a pressure gauge (8), which is connected to the hydraulic system to display the pressure value during the pressing process in real time.

6. The motor rotor bearing press-fitting device according to claim 1, characterized in that: The valve assembly uses a proportional relief valve.

7. The motor rotor bearing press-fitting device according to claim 1, characterized in that: The hydraulic pump (3) is a variable displacement piston pump.

8. The motor rotor bearing press-fitting device according to claim 1, characterized in that: The control panel (7) is a touch-screen industrial display.

9. The motor rotor bearing press-fitting device according to claim 1, characterized in that: The hydraulic cylinder (4) is equipped with a displacement sensor.

10. The motor rotor bearing press-fitting device according to claim 3, characterized in that: It also includes signal lights, which are fixedly installed on the frame (1) and connected to the safety light curtain (9).

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