An outboard motor underwater housing bearing press-fitting device and a press-fitting method thereof

Abstract

This invention discloses a pressing device and method for pressing bearings of an outboard motor underwater hull, relating to the field of mechanical assembly technology. It includes a workbench with a control cabinet mounted at its rear end. A support frame is mounted on the upper part of the workbench, and a servo lifting mechanism is mounted on the upper end of the support frame. A lifting plate is mounted on the output end of the servo lifting mechanism, and an underwater hull bearing press head is detachably mounted on the lower end of the lifting plate. A linear motion mechanism is mounted on the upper part of the workbench below the support frame, and a bearing pressing tray is mounted on the linear motion mechanism. This invention achieves automatic workpiece feeding and positioning through the linear motion mechanism, and automatic static pressure pressing through the servo lifting mechanism. The entire process requires no manual alignment or pressure application. Combined with one-click program invocation, it is suitable for mass production operations on assembly lines, effectively reducing manual labor intensity and improving production cycle time and operational efficiency.

Description

Technical Field

[0001] This invention relates to the field of mechanical assembly technology, specifically to a pressing device and method for pressing bearings in the underwater hull of an outboard motor. Background Technology

[0002] Outboard motors are specialized marine propulsion devices installed on the stern plate of a ship. The assembly and installation precision of the bearings inside the underwater hull directly determines the smoothness of the overall transmission operation, the level of operating noise, and the overall service life of the equipment.

[0003] Currently, the industry commonly uses two methods for pressing outboard engine underwater hull bearings: manual pressing or pressing with simple hydraulic equipment. Manual pressing cannot control the uniformity of the pressing force or the precise control of the pressing displacement, which can easily cause bearing misalignment, surface damage, and seriously compromise the bearing assembly coaxiality and hull sealing performance, resulting in poor product assembly quality stability. At the same time, although conventional simple hydraulic equipment can provide a large pressing driving force, it lacks precise stroke control, process monitoring, and data recording functions, making it impossible to achieve automated and standardized production of bearing pressing operations, resulting in poor assembly consistency between different batches of products. Furthermore, there is no data retention throughout the pressing process, making it impossible to achieve process data traceability, which is not conducive to product quality control and subsequent fault tracing analysis. Existing similar pressing equipment lacks versatility, and the structure and tooling are mostly customized for a single model, making it difficult to adapt to the pressing needs of multiple models of outboard engine underwater hull bearings. The equipment has a narrow range of adaptability, low reuse rate, and cannot keep up with the pace of large-scale production lines in enterprises. Summary of the Invention

[0004] The purpose of this invention is to provide a pressing device and method for pressing bearings in the underwater hull of an outboard engine, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pressing device for underwater hull bearings of outboard motors, comprising a workbench, a control cabinet mounted at the rear end of the workbench, a support frame mounted at the upper end of the workbench, a servo lifting mechanism mounted at the upper end of the support frame, a lifting plate mounted at the output end of the servo lifting mechanism, an underwater hull bearing press head detachably mounted at the lower end of the lifting plate, a linear motion mechanism mounted at the upper end of the workbench below the support frame, and a bearing pressing tray mounted on the linear motion mechanism.

[0006] Preferably, the linear motion mechanism includes a servo motor, a ball screw, a moving block, a linear guide rail, a slider, and an encoder. The servo motor is mounted on the upper part of the worktable below the support frame, the ball screw is mounted on the output end of the servo motor, the moving block is threaded onto the surface of the ball screw, the bearing press-fit tray is mounted on the upper part of the moving block, and sliders are mounted on both sides of the lower end of the moving block. Linear guide rails are mounted on the upper part of the worktable on both sides of the servo motor, and the sliders are slidably mounted on the linear guide rails.

[0007] Preferably, the servo lifting mechanism is controlled by a PLC system, and the encoder detects the rotation angle of the servo motor in real time and feeds back the position information to the PLC system.

[0008] Preferably, the bearing press-fitting tray includes a tray base plate, a fixed plate, a guide shaft, a return spring, a support plate, a guide positioning sleeve, a support shaft, an underwater hull positioning block, and a bearing press-fitting positioning block. The tray base plate is installed on the upper end of the movable block, and the fixed plate is installed on the upper end of the tray base plate. A guide shaft is installed at the included angle of the upper end of the fixed plate via a linear bearing. A support plate is installed on the upper end of the four guide shafts. A return spring is sleeved on the surface of each guide shaft between the fixed plate and the support plate. A guide positioning sleeve is installed in the middle of the support plate. A support shaft is installed inside the guide positioning sleeve. An underwater hull positioning block is installed on the upper end of the support shaft. A bearing press-fitting positioning block is installed on the upper end of the underwater hull positioning block.

[0009] Preferably, the bearing press-fit positioning block and the underwater hull bearing press head are replaceable structures to adapt to the press-fitting conditions of underwater hulls and bearings of different models of outboard motors.

[0010] Preferably, the control cabinet surface is equipped with a control panel, which has a press-fitting parameter setting interface and a process monitoring interface.

[0011] Preferably, light rods are installed on both sides of the upper end of the lifting plate, and the upper end of the light rods passes through the support frame.

[0012] A pressing method for an outboard motor underwater housing bearing pressing device includes the following steps: S1 Model Parameter Presetting and Tooling Replacement: According to the model of the outboard motor underwater hull to be pressed, the operator selects the corresponding pressing program on the control panel of the control cabinet, presets the process parameters of pressing height, pressing pressure, and pressing speed; replaces the matching underwater hull positioning block and bearing pressing positioning block, and uses diamond pins for precise positioning to ensure that the tooling is installed without deviation; S2 workpiece pre-assembly and positioning: Place the bearing to be assembled on the bearing press-fit positioning block, then place the outboard motor underwater hull on the underwater hull positioning block, manually check that the hull and bearing are in the correct positions, and complete the pre-assembly preparation; S3 station automatic conveying and positioning: When the equipment is started, the PLC system controls the linear motion mechanism to work. The ball screw driven by the servo motor moves the moving block and the upper bearing pressing tray horizontally. The encoder collects the rotation angle signal in real time and feeds it back to the PLC. The closed-loop precise control of the tray travel distance ensures that the workpiece stops precisely at the station directly below the pressing position. S4 Servo Precision Press Fitting: The servo lifting mechanism receives PLC commands to drive the lifting plate and the underwater hull bearing pressure head to move vertically downwards. The pressure head presses against the underwater hull and moves downwards synchronously. Under the guidance of the guide shaft and support plate, it feeds smoothly, the bearing remains stationary, and the hull is slowly fitted into the bearing, achieving precise press fitting without impact or eccentricity. During the process, the pressing pressure and pressing depth are collected in real time, and the system automatically determines whether the assembly is qualified. If there is an abnormality, an alarm is immediately triggered and the machine is stopped. S5 mechanism automatic reset: After pressing is completed, the servo lifting mechanism drives the underwater housing bearing press head to move upward and return to the initial height; the linear motion mechanism drives the bearing pressing tray to return to the loading position, and at the same time the reset spring pushes the support plate moving parts to automatically spring back and reset, and the equipment returns to the standby state; The pressure, displacement, and qualification status data of the entire S6 press-fitting process are automatically stored in the control cabinet, which can be queried locally or exported remotely through the factory's MES system for quality traceability. After the operator removes the assembled underwater hull, the steps S1-S5 are repeated to perform the next workpiece press-fitting operation.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention relates to a pressing device and method for pressing bearings in the underwater hull of outboard motors. By adopting PLC combined with servo closed-loop control, it replaces traditional manual pressing and simple hydraulic pressing. It can accurately control the pressing force, pressing stroke and pressing speed, avoid bearing pressing misalignment and impact damage, effectively ensure the coaxiality and sealing performance of the bearing and the underwater hull, eliminate manual assembly errors, and greatly improve product assembly consistency.

[0014] This invention relates to a pressing device and method for pressing bearings in the underwater hull of outboard motors. It achieves automatic feeding and positioning of workpieces through a linear motion mechanism and completes automatic static pressure pressing through a servo lifting mechanism. The entire process requires no manual alignment or manual pressure application. With one-click program call, it is suitable for mass production operations on assembly lines, effectively reducing the intensity of manual labor and improving production cycle and operational efficiency.

[0015] This invention relates to a pressing device and method for pressing underwater hull bearings of outboard motors. By adopting a modular and replaceable tooling structure, only the underwater hull bearing press head, underwater hull positioning block, and bearing pressing positioning block need to be replaced. Without modifying the overall machine frame and transmission structure, it can be adapted to the pressing of underwater hull bearings of different models of outboard motors. It has strong versatility, quick model changeover, meets the needs of multi-variety mixed production lines, and improves equipment reuse rate.

[0016] This invention relates to a pressing device and method for pressing bearings in the underwater hull of outboard motors. By collecting pressure and displacement data in real time throughout the pressing process, it automatically determines the assembly qualification status. When abnormal pressure or insufficient pressing depth occurs, it automatically alarms and stops the machine, promptly intercepting defective products and avoiding batch quality problems. This overcomes the shortcomings of traditional equipment that lack monitoring and self-inspection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the workbench of the present invention; Figure 3 This is a schematic diagram of the linear motion mechanism of the present invention; Figure 4 This is a schematic diagram of the bearing press-fit tray of the present invention; Figure 5 This is an exploded view of the bearing press-fit tray of the present invention.

[0018] In the diagram: 1. Workbench; 2. Control cabinet; 3. Lifting plate; 4. Support frame; 5. Servo lifting mechanism; 6. Underwater hull bearing pressure head; 7. Linear motion mechanism; 8. Bearing press-fit tray; 9. Spur rod; 701. Servo motor; 702. Ball screw; 703. Moving block; 704. Linear guide rail; 705. Slider; 801. Tray base plate; 802. Fixing plate; 803. Guide shaft; 804. Return spring; 805. Support plate; 806. Guide positioning sleeve; 807. Support shaft; 808. Underwater hull positioning block; 809. Bearing press-fit positioning block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figures 1 to 5 As shown, this embodiment relates to the underwater hull bearing press-fitting device for outboard motors, which includes a workbench 1. The workbench 1 serves as the base frame for the entire machine, providing a stable installation reference for each mechanism. A control cabinet 2 is installed at the rear of the workbench 1. The control cabinet 2 centrally integrates a PLC control system, data storage, and electrical power distribution modules to realize the logic control, parameter setting, and data management of the entire machine. A support frame 4 is installed on the upper end of the workbench 1, and a servo lifting mechanism 5 is installed on the upper end of the support frame 4. The support frame 4 provides vertical fixed support for the servo lifting mechanism 5 to ensure the vertical press-fitting rigidity. A lifting plate 3 is installed at the output end of the servo lifting mechanism 5. The servo lifting mechanism 5 drives the pressure head through the lifting plate 3 to achieve precise vertical feeding, providing controllable pressing stroke and pressing force; the underwater hull bearing pressure head 6 is detachably installed at the lower end of the lifting plate 3. The underwater hull bearing pressure head 6 adopts a detachable structure, which is convenient for quick replacement to adapt to different models; the workbench 1 below the support frame 4 is equipped with a linear motion mechanism 7, and a bearing pressing tray 8 is installed on the linear motion mechanism 7. The linear motion mechanism 7 is responsible for the horizontal precise conveying and positioning of the bearing pressing tray 8. The bearing pressing tray 8 is used for workpiece tooling positioning and bearing, realizing the pre-installation, positioning and station transfer of the hull and bearing.

[0022] Specifically, the linear motion mechanism 7 includes a servo motor 701, a ball screw 702, a moving block 703, a linear guide 704, a slider 705, and an encoder. The servo motor 701 is mounted on the upper end of the worktable 1 below the support frame 4. The ball screw 702 is mounted on the output end of the servo motor 701, and the moving block 703 is threaded onto the surface of the ball screw 702. A bearing press-fit tray 8 is mounted on the upper end of the moving block 703. The ball screw 702 converts the rotational motion of the servo motor 701 into the linear feed motion of the moving block 703, achieving high transmission accuracy and smooth transmission. The gap; sliders 705 are installed on both sides of the lower end of the moving block 703, and linear guides 704 are installed on the upper end of the worktable 1 on both sides of the servo motor 701. The sliders 705 are slidably installed on the linear guides 704. The linear guides 704 and the sliders 705 form a linear guide pair, which restricts the degree of freedom of movement of the moving block 703, ensures the straightness, stability and load-bearing rigidity of the horizontal movement of the bearing pressing tray 8, effectively counteracts the lateral torque generated during pressing, and prevents off-center load deviation; the encoder collects the angular displacement of the servo motor 701 in real time, providing a signal source for position closed-loop control.

[0023] Furthermore, the servo lifting mechanism 5 is controlled by a PLC system. The encoder detects the rotation angle of the servo motor 701 in real time and feeds back the position information to the PLC system. The PLC system enables precise programmable control of the lifting stroke, pressing speed, and pressing pressure of the servo lifting mechanism 5, and process parameters can be called up with one click according to different models. The encoder forms a closed-loop position feedback, corrects the horizontal displacement deviation of the bearing pressing tray 8 in real time, accurately locks the pressing position, eliminates manual positioning errors, ensures the coaxial pressing accuracy of the bearing and the housing, and provides a control basis for the automation and standardization of the pressing process.

[0024] Furthermore, the bearing press-fit tray 8 includes a tray base plate 801, a fixed plate 802, a guide shaft 803, a return spring 804, a support plate 805, a guide positioning sleeve 806, a support shaft 807, an underwater hull positioning block 808, and a bearing press-fit positioning block 809; the tray base plate 801 is installed on the upper end of the moving block 703, the fixed plate 802 is installed on the upper end of the tray base plate 801, and the guide shaft 803 is installed at the included angle of the upper end of the fixed plate 802 via a linear bearing; the guide shaft 803, in conjunction with the linear bearing, achieves vertical and stable guidance of the support plate 805, reducing motion friction and improving repeatability positioning accuracy; the support plate 805 is installed on the upper end of the four guide shafts 803, and the return spring 804 is sleeved on the surface of the guide shafts 803 between the fixed plate 802 and the support plate 805; the return spring 804 is used in single... After the initial press-fit is completed, the drive support plate 805 and tooling components automatically spring back to their original positions, eliminating the need for manual reset and simplifying the operation process. A guide positioning sleeve 806 is installed in the middle of the support plate 805, and a support shaft 807 is installed inside the guide positioning sleeve 806. The guide positioning sleeve 806 ensures the concentricity of the support shaft 807 during installation, avoiding assembly eccentricity. The support shaft 807 bears the axial press-fit load, providing rigid support for the bearing. An underwater hull positioning block 808 is installed at the upper end of the support shaft 807, and a bearing press-fit positioning block 809 is installed at the upper end of the underwater hull positioning block 808. The underwater hull positioning block 808 enables rapid positioning and placement of underwater hulls of different specifications. The bearing press-fit positioning block 809 provides fixed-point support and positioning for the bearing, keeping the bearing stationary during press-fitting, enabling the hull to be pressed and assembled downwards, and preventing the bearing from being misaligned under force and causing damage to the raceway.

[0025] Furthermore, the bearing press-fit positioning block 809 and the underwater hull bearing press head 6 are replaceable structures, adaptable to the press-fitting conditions of underwater hulls and bearings of different models of outboard engines; adopting a modular and detachable replacement structure, without modifying the overall machine frame and transmission mechanism, only the corresponding specifications of the underwater hull bearing press head 6 and bearing press-fit positioning block 809 can be replaced to adapt to the press-fitting needs of multiple outboard engine hulls and bearings, the equipment has strong versatility, short model changeover time, greatly improves equipment utilization, and meets the needs of multi-variety mixed production line production.

[0026] Furthermore, a control panel is installed on the surface of control cabinet 2. The control panel has a pressing parameter setting interface and a process monitoring interface. As a human-machine interaction terminal, the control panel can manually set and call program parameters such as pressing pressure, pressing depth, lifting speed, and station stroke; monitor the pressure and displacement data of the entire pressing process in real time, automatically determine whether the pressing is qualified, and automatically alarm and shut down in case of abnormal working conditions; at the same time, it has the functions of pressing data storage, query and interface with the factory MES system to realize production data traceability and process optimization.

[0027] Furthermore, both sides of the upper end of the lifting plate 3 are equipped with light rods 9, with the upper end of the light rods 9 penetrating the support frame 4. The light rods 9 serve as vertical guides and anti-torsion limiters for the lifting plate 3, sharing the lateral load torque of the servo lifting mechanism 5, preventing the lifting plate 3 from tilting or shaking during downward pressing, ensuring that the underwater hull bearing pressure head 6 is always pressed vertically, further improving the coaxiality and assembly uniformity of the bearing pressing, and reducing the risk of impact damage to the bearing and hull.

[0028] A pressing method for an outboard motor underwater housing bearing pressing device includes the following steps: S1 Model Parameter Presetting and Tooling Replacement: According to the model of the underwater hull of the outboard engine to be pressed, the operator selects the corresponding pressing program on the control panel of control cabinet 2, and presets the pressing height, pressing pressure, pressing speed and other process parameters; replace the underwater hull positioning block 808 and bearing pressing positioning block 809 matching the model, and use diamond pins for precise positioning to ensure that the tooling is installed without deviation; S2 workpiece pre-assembly and positioning: Place the bearing to be assembled on the bearing press-fit positioning block 809, then place the outboard motor underwater hull on the underwater hull positioning block 808, manually check that the hull and bearing are in the correct positions, and complete the pre-assembly preparation; S3 station automatic conveying and positioning: When the equipment is started, the PLC system controls the linear motion mechanism 7 to work. The ball screw 702 driven by the servo motor 701 drives the moving block 703 and the upper bearing pressing tray 8 to move horizontally. The encoder collects the rotation angle signal in real time and feeds it back to the PLC. The closed-loop precise control of the tray travel distance makes the workpiece stop precisely at the station directly below the pressing position. S4 Servo Precision Press Fitting: The servo lifting mechanism 5 receives PLC commands and drives the lifting plate 3 and the underwater hull bearing pressure head 6 to descend vertically. The pressure head presses against the underwater hull and moves down synchronously. Under the guidance of the guide shaft 803 and the support plate 805, the system feeds smoothly while the bearing remains stationary and the hull is slowly fitted into the bearing, achieving precise press fitting without impact or eccentricity. During the process, the pressing pressure and pressing depth are collected in real time. The system automatically determines whether the assembly is qualified and immediately alarms and stops the machine if there is an abnormality. S5 Mechanism Automatic Reset: After pressing is completed, the servo lifting mechanism 5 drives the underwater housing bearing pressure head 6 to move upward and return to the initial height; the linear motion mechanism 7 drives the bearing pressing tray 8 to return to the loading position, and at the same time, the reset spring 804 pushes the support plate 805 and other moving parts to automatically spring back and reset, and the equipment returns to the standby state. Data such as pressure, displacement, and qualification status during the entire S6 press-fitting process are automatically stored in control cabinet 2. This data can be queried locally or remotely exported and traced through the factory's MES system. Operators remove the assembled underwater hull and repeat steps S1–S5 to perform continuous press-fitting of the next workpiece.

[0029] The usage method of this embodiment is as follows: During operation, first, according to the model, retrieve the pressing program on the control panel and replace the matching underwater hull positioning block 808 and bearing pressing positioning block 809. Place the bearing and underwater hull on the bearing pressing tray 8 in sequence to complete the pre-installation. The PLC system controls the servo motor 701 in the linear motion mechanism 7 to drive the ball screw 702 to drive the moving block 703 and the bearing pressing tray 8 to move smoothly along the linear guide rail 704. With the help of the encoder position closed-loop feedback, the workpiece is accurately transported to the pressing station. After it is in place, the servo lifting mechanism 5 drives the lifting plate 3 and the underwater hull bearing pressing head 6 to move vertically downward according to the set speed and pressure. The guide rod 9 plays a vertical guiding and anti-torsion role for the lifting plate 3 to ensure that the pressing head presses down vertically. During the pressing process, the guide shaft 803, the support plate 805 and the guide positioning block 809 are connected to the guide shaft 803 and the support plate 805. The sleeve 806 works in conjunction to achieve vertical stability and guidance. The bearing is supported and kept stationary by the support shaft 807 and the bearing pressing positioning block 809. The underwater hull moves down synchronously with the pressing head, and the bearing is pressed in smoothly by static pressure, avoiding impact, eccentricity and bearing damage. The pressing pressure and pressing depth data are collected in real time throughout the pressing process. The system automatically judges the qualified status and automatically alarms and stops the machine in case of abnormality. After pressing is completed, the servo lifting mechanism 5 and the linear motion mechanism 7 are reset in sequence. At the same time, the reset spring 804 drives the pallet tooling components to return to their automatic position. All pressing data is automatically stored in the control cabinet 2, which can be viewed locally or exported remotely through the MES system for quality traceability. By changing the underwater hull bearing pressing head 6 and positioning block of different specifications, it can be adapted to multi-model mixed production lines, realizing high-precision, high-consistency, automated and traceable bearing pressing operations.

[0030] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressing device for underwater hull bearings of outboard motors, comprising a workbench (1), characterized in that: A control cabinet (2) is installed at the rear end of the workbench (1). A support frame (4) is installed at the upper end of the workbench (1). A servo lifting mechanism (5) is installed at the upper end of the support frame (4). A lifting plate (3) is installed at the output end of the servo lifting mechanism (5). An underwater hull bearing pressure head (6) is detachably installed at the lower end of the lifting plate (3). A linear motion mechanism (7) is installed at the upper end of the workbench (1) below the support frame (4). A bearing pressing tray (8) is installed on the linear motion mechanism (7).

2. The pressing device for the bearing of the underwater casing of an outboard engine as described in claim 1, characterized in that: The linear motion mechanism (7) includes a servo motor (701), a ball screw (702), a moving block (703), a linear guide rail (704), a slider (705), and an encoder. The servo motor (701) is installed on the upper end of the worktable (1) below the support frame (4). The ball screw (702) is installed on the output end of the servo motor (701). The moving block (703) is threaded onto the surface of the ball screw (702). The bearing press-fit tray (8) is installed on the upper end of the moving block (703). Slider (705) is installed on both sides of the lower end of the moving block (703). Linear guide rails (704) are installed on the upper ends of the worktable (1) on both sides of the servo motor (701). The slider (705) is slidably installed on the linear guide rail (704).

3. The pressing device for the bearing of the underwater hull of an outboard engine according to claim 2, characterized in that: The servo lifting mechanism (5) is controlled by the PLC system, and the encoder detects the rotation angle of the servo motor (701) in real time and feeds back the position information to the PLC system.

4. The pressing device for the bearing of the underwater hull of an outboard engine according to claim 2, characterized in that: The bearing press-fit tray (8) includes a tray base plate (801), a fixing plate (802), a guide shaft (803), a return spring (804), a support plate (805), a guide positioning sleeve (806), a support shaft (807), an underwater hull positioning block (808), and a bearing press-fit positioning block (809). The tray base plate (801) is installed on the upper end of the moving block (703), and the fixing plate (802) is installed on the upper end of the tray base plate (801). The guide shaft (803) is installed at the included angle of the upper end of the fixing plate (802) through a linear bearing. A support plate (805) is installed on the upper end of the four guide shafts (803). A return spring (804) is sleeved on the surface of the guide shafts (803) between the fixed plate (802) and the support plate (805). A guide positioning sleeve (806) is installed in the middle of the support plate (805). A support shaft (807) is installed inside the guide positioning sleeve (806). An underwater hull positioning block (808) is installed on the upper end of the support shaft (807). A bearing press-fit positioning block (809) is installed on the upper end of the underwater hull positioning block (808).

5. The press-fitting device for the underwater housing bearing of an outboard engine according to claim 4, characterized in that: The bearing press-fit positioning block (809) and the underwater hull bearing press head (6) are replaceable structures, adaptable to the press-fitting conditions of underwater hulls and bearings of different models of outboard motors.

6. The press-fitting device for the underwater housing bearing of an outboard engine according to claim 1, characterized in that: The control cabinet (2) is equipped with a control panel, which has a press-fit parameter setting interface and a process monitoring interface.

7. The pressing device for the underwater housing bearing of an outboard engine according to claim 1, characterized in that: The upper sides of the lifting plate (3) are equipped with light rods (9), and the upper end of the light rods (9) passes through the support frame (4).

8. The pressing method of the outboard engine underwater housing bearing pressing device according to claim 1, characterized in that, Includes the following steps: S1 Model Parameter Preset and Tooling Replacement: According to the model of the underwater hull of the outboard motor to be pressed, the operator selects the corresponding pressing program on the control panel of the control cabinet (2) and presets the process parameters of pressing height, pressing pressure and pressing speed; replace the underwater hull positioning block (808) and bearing pressing positioning block (809) matching the model, and accurately position them with diamond pins to ensure that the tooling is installed without deviation; S2 Pre-assembly and positioning of workpiece: Place the bearing to be assembled on the bearing press-fit positioning block (809), and then place the outboard motor underwater hull on the underwater hull positioning block (808). Manually check that the hull and bearing are in the correct positions to complete the pre-assembly preparation. S3 station automatic conveying and positioning: Start the equipment, the PLC system controls the linear motion mechanism (7) to work, the servo motor (701) drives the ball screw (702) to drive the moving block (703) and the upper bearing pressing tray (8) to move horizontally; the encoder collects the rotation angle signal in real time and feeds it back to the PLC, and controls the tray travel distance in a closed loop so that the workpiece stops precisely at the pressing station directly below; S4 Servo Precision Press Fitting: The servo lifting mechanism (5) receives PLC instructions to drive the lifting plate (3) and the underwater shell bearing pressure head (6) to descend vertically. The pressure head presses down on the underwater shell and moves down synchronously. Under the guidance of the guide shaft (803) and the support plate (805), the machine is fed smoothly. The bearing remains stationary and the shell is slowly fitted into the bearing, achieving precise pressing without impact or eccentricity. The pressing pressure and pressing depth are collected in real time during the process. The system automatically determines whether the assembly is qualified. If there is an abnormality, an alarm is immediately triggered and the machine is stopped. S5 mechanism automatic reset: After pressing is completed, the servo lifting mechanism (5) drives the underwater shell bearing pressure head (6) to move upward and return to the initial height; the linear motion mechanism (7) drives the bearing pressing tray (8) to return to the loading position, and at the same time the reset spring (804) pushes the support plate (805) moving parts to automatically spring back and reset, and the equipment returns to the standby state; The pressure, displacement, and qualification status data of the entire S6 press-fitting process are automatically stored in the control cabinet (2), which can be queried locally or exported remotely through the factory MES system for quality traceability; the operator removes the assembled underwater shell and repeats steps S1–S5 to perform the next workpiece continuous press-fitting operation.

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