Portable press-fitting device and using method

Abstract

The invention relates to a portable press-fitting device and a using method. The portable press-fitting device comprises a bent arm, and a positioning block used for containing a workpiece to be press-fitted is arranged on the inner side of the bottom end of the bent arm; the pressurizing assembly comprises a body, a turbine, a worm and a lead screw, the body is fixedly connected with the top end of the bent arm, the turbine and the worm are arranged in the body and are in meshing transmission, the two ends of the worm horizontally penetrate through the body, the lead screw vertically penetrates through the body and the turbine, and the worm is arranged in the body. The transmission shaft is in threaded transmission with the turbine; the floating assembly is movably installed at the bottom end of the lead screw, and the floating assembly and the positioning block are oppositely arranged; the driving assembly is arranged at the end of the worm and used for driving the worm to rotate, and the worm drives the turbine to rotate and drives the lead screw to ascend and descend the floating assembly through the turbine. The method and the device can be suitable for flexible mixed-line production of various vehicle types, are suitable for the assembling takt of each vehicle type, and improve the flexibility of the production line.

Description

Technical Field

[0001] The present application relates to the field of automobile manufacturing, and in particular to a portable press-fitting device and a method of use. Background Art

[0002] Automobile production is a high-volume process, often requiring multiple production lines, assembly stations, and specialized equipment based on the vehicle's structure and process sequence. For example, when assembling suspension, axles, and wheel discs on the chassis production line, specialized press-fitting devices (hydraulic or servo systems) are often used to assemble coil spring shock absorbers. This requires dedicated sub-assembly stations for press-fitting, and then multiple steps of assembly on the chassis line. This process and equipment are complex. Dedicated press-fitting devices are suitable for scenarios with high cycle times and a high degree of automation. Because of this, dedicated press-fitting devices require the integration of multiple sensors, resulting in a large and complex structure that is difficult to meet the flexible and changing process requirements on site, and the number of applicable vehicle models is also very limited.

[0003] Nowadays, modern automobile production is becoming more and more flexible, that is, small batches and multiple varieties of models are produced on flexible mixed lines. The assembly content of each model is different, and the assembly rhythm of each model is also different. In order to improve the flexibility of the production line, it is necessary to develop some more adaptable pressing devices and reduce special equipment, sub-packaging lines, transfer equipment, etc. to meet production needs. Summary of the Invention

[0004] The present application provides a portable pressing device and a method of use, which can be applicable to the flexible mixed-line production of multiple types of vehicle models, suitable for the assembly rhythm of various vehicle models, and improve the flexibility of the production line.

[0005] In a first aspect, an embodiment of the present application provides a portable press-fitting device. The portable press-fitting device includes a curved arm, the bottom inner side of which is provided with a positioning block for placing the workpiece to be pressed; a booster assembly, which includes a body, a turbine, a worm, and a screw; the body is fixedly connected to the top of the curved arm; the turbine and worm are disposed inside the body, meshing with each other, the two ends of the worm horizontally passing through the body, the screw vertically passing through the body and the turbine, and threadedly transmitting with the turbine; a floating assembly, which is movably mounted at the bottom end of the screw, the floating assembly being positioned relative to the positioning block; and a drive assembly, which is disposed at the end of the worm and is used to drive the worm to rotate, the worm driving the turbine to rotate, and the turbine driving the screw to lift the floating assembly.

[0006] In combination with the first aspect, in some embodiments, a spherical cap is provided at the bottom end of the screw rod, the plane radius of the spherical cap is larger than the cross-sectional radius of the screw rod, the floating assembly includes a pressure plate and a connecting sleeve, the top of the pressure plate is recessed inward, the spherical surface of the spherical cap is located in the recess, and the pressure plate and the screw rod are movably connected through a connecting sleeve.

[0007] In combination with the first aspect, in some embodiments, the connecting sleeve is a circular ring structure with a stepped hole, and the connecting sleeve is fixedly connected to the top surface of the pressure plate, forming a accommodating cavity for accommodating the spherical crown therebetween; in the initial state, a gap is left between the spherical surface and the inner wall of the recess.

[0008] In combination with the first aspect, in some embodiments, an end plate is provided at the top end of the screw rod to prevent the screw rod from falling out.

[0009] In combination with the first aspect, in some embodiments, a bushing is provided at the contact portion between the screw rod and the body.

[0010] In combination with the first aspect, in some embodiments, the screw rod passes vertically through the center of the turbine, and the worm is located on the side of the turbine and is perpendicular to the screw rod.

[0011] In combination with the first aspect, in some embodiments, the body has a mounting cavity, and the turbine is rotatably disposed in the mounting cavity.

[0012] In combination with the first aspect, in some embodiments, the bent arm has a weight-reducing hole.

[0013] In combination with the first aspect, in some embodiments, the drive assembly includes at least one of a motor, an electric gun and a handwheel, which is used in conjunction with the end of the worm to drive the worm to rotate, and the worm drives the turbine to rotate, and the turbine drives the screw to lift and lower the floating assembly.

[0014] In a second aspect, embodiments of the present application provide a method for using a portable press-fitting device according to any of the aforementioned embodiments. The method comprises: placing a workpiece to be press-fitted on a positioning block of a curved arm; using a drive assembly to positively rotate a worm, which in turn rotates a turbine, which in turn drives a lead screw downward, and a floating assembly at the bottom of the lead screw presses down the workpiece to be press-fitted; after press-fitting is completed, using the drive assembly to reversely rotate the worm, which in turn rotates the turbine, which in turn drives the lead screw upward, until the floating assembly returns to its original position.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present application include: In this application, the bent arm serves as a rigid support structure, and the bottom end thereof realizes precise positioning of the workpiece to be pressed through the positioning block, and the top end fixes the booster assembly, thus forming a pressing space of "upper pressure and lower positioning", which is similar to the force transmission path of a "door-type frame".

[0016] Secondly, the main body of the supercharger assembly integrates a turbine, a worm and a lead screw. Through the motion conversion of "worm rotation → turbine meshing transmission → lead screw thread transmission", the rotational power of the drive assembly on the worm is converted into the axial lifting motion of the lead screw, which not only realizes power transmission and supercharging, but also can amplify the output force with the help of the large transmission ratio of the turbine and worm.

[0017] By movably installing the floating component at the bottom end of the screw, the positions of the floating component and the positioning block are set relative to each other, so that during the pressing process, it can adapt to the slight deflection of the workpiece to be pressed or the screw, preventing the floating component and the screw from getting stuck and becoming unusable.

[0018] By arranging the driving assembly at the end of the worm, the worm can be driven to rotate, the worm drives the turbine to rotate, and the turbine drives the screw to lift the floating assembly, thereby realizing the pressing operation of the workpiece to be pressed.

[0019] Through this application, during press-fitting, the workpiece 5 to be press-fitted is placed on the positioning block 11 of the bent arm 1 for fixation; the drive assembly 4 is used to drive the worm 23 to rotate in the forward direction, and then the worm 23 drives the turbine 22 to rotate, and the turbine 22 drives the screw 24 to descend, and the floating assembly 3 at the bottom of the screw 24 presses down the workpiece 5 to be press-fitted until the required compression amount of the workpiece to be press-fitted is met; after the press-fitting is completed, the drive assembly 4 is used to drive the worm 23 to rotate in the reverse direction, and then the worm 23 drives the turbine 22 to rotate, and the turbine 22 drives the screw 24 to rise until the floating assembly 3 is reset. Through this application, it can be applied to the flexible mixed-line production of multiple types of vehicle models, applicable to the assembly rhythm of various vehicle models, and improve the flexibility of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 2 is a front view of a portable press-fitting device according to an embodiment of the present application; Figure 2 yes Figure 1 A top view of Figure 3 This is a flow chart of a method for using the portable press-fitting device in an embodiment of the present application.

[0022] In the picture: 1. Bend arm; 11. Positioning block; 12. Weight reduction hole; 13. Lifting ring; 14. Assembly hole; 2. Supercharger assembly; 21. Body; 22. Turbine; 23. Worm; 24. Screw; 241. Ball crown; 242. End plate; 25. Bushing; 26. Mounting cavity; 27. Bearing; 3. Floating assembly; 31. Pressure plate; 32. Connecting sleeve; 4. Drive assembly; 41. Motor; 42. Electric gun; 43. Handwheel; 5. Workpiece to be pressed. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] The embodiments of the present application provide a portable pressing device and a method of use, which can be applicable to the flexible mixed-line production of multiple types of vehicle models, suitable for the assembly rhythm of various vehicle models, and improve the flexibility of the production line.

[0025] In a first aspect, the present application provides a portable press-fitting device.

[0026] See also Figure 1 and Figure 2 , Figure 1 2 is a front view of a portable press-fitting device according to an embodiment of the present application; Figure 2 yes Figure 1 A top view of the . Figure 1 and Figure 2 As shown, in one embodiment, the portable press-fitting device includes a curved arm 1, a pressurizing assembly 2, a floating assembly 3, and a drive assembly 4. The curved arm 1 serves as the rigid support (force transmission) structure for the entire portable press-fitting device. The pressurizing assembly 2 is mounted at the top of the curved arm 1, while the floating assembly 3 is mounted at the bottom of the pressurizing assembly 2. The drive assembly 4 drives the pressurizing assembly 2 to press down the floating assembly 3, which in turn acts on the workpiece 5 to be press-fitted, thereby achieving the press-fitting operation.

[0027] Specifically, the curved arm 1 has a C-shaped structure, and the curved arm 1 is equivalent to the main force transmission structure of the entire portable pressing device. Several weight-reducing holes 12 can be opened on the curved arm 1 to reduce the weight of the entire portable pressing device without affecting the force transmission. At the same time, the material of the curved arm 1 can also be selected to be an aluminum alloy. A set of screw holes can be set on the top of the curved arm 1 for assembling a lifting ring 13. The lifting ring 13 can be used to hang the entire portable pressing device next to the production line, making it convenient for workers to operate at any time. In addition, the appropriate screw hole position can be selected according to the center of gravity of the curved arm 1 to install the lifting ring 13 to meet the working posture of the portable pressing device. A positioning block 11 is provided on the inner side of the bottom end of the curved arm 1 for placing the workpiece 5 to be pressed. In actual application, the specific shape of the positioning block 11 is designed and processed according to the specific shape of the workpiece 5 to be pressed, ensuring that the workpiece 5 to be pressed can be better fixed. Assembly holes 14 can also be set on the curved arm 1, through which the entire portable pressing device can be fixedly mounted on a workbench or other equipment.

[0028] The boost assembly 2 includes a main body 21, a turbine 22, a worm 23 and a screw 24. The main body 21 can be fixedly connected to the top of the bent arm 1 by screws. At the same time, a step can be provided on the mounting surface of the bent arm 1 to bear most of the force of the main body 21 to prevent the screw from being subjected to shear force. The turbine 22 and the worm 23 are both arranged inside the main body 21, and are arranged crosswise and meshingly for transmission. The two ends of the worm 23 pass through the main body 21 horizontally (in fact, this is to facilitate the drive assembly 4 to clamp the end of the worm 23 outside the main body 21 and drive the worm 23 to rotate). The screw 24 vertically passes through the main body 21 and the turbine 22, and the screw 24 and the turbine 22 are threadedly transmitted, that is, the turbine 22 drives the screw 24 to move up and down linearly through the transmission thread.

[0029] The floating component 3 can be movably mounted on the bottom end of the screw rod 24. The floating component 3 and the positioning block 11 are arranged relative to each other. Spherical fit or clearance compensation can be adopted between the floating component 3 and the screw rod 24 to adapt to the slight deflection of the workpiece 5 to be pressed or the screw rod 24.

[0030] Drive assembly 4 is disposed at the end of worm 23 and can be at least one of a motor 41, an electric gun 42, and a handwheel 43. Drive assembly 4 drives worm 23 to rotate, which in turn drives turbine 22, which in turn drives screw 24 to raise and lower floating assembly 3.

[0031] In this embodiment, the bent arm 1 serves as a rigid supporting structure, and the bottom end thereof realizes precise positioning of the workpiece 5 to be pressed through the positioning block 11, and the booster assembly 2 is fixed at the top, thus forming a pressing space of "upper pressure and lower positioning", which is similar to the force transmission path of a "door-type frame".

[0032] Secondly, the main body 21 of the supercharging component 2 integrates the turbine 22, the worm 23 and the screw 24. Through the motion conversion of "rotation of the worm 23 → meshing transmission of the turbine 22 → threaded transmission of the screw 24", the rotational power of the drive component 4 on the worm 23 is converted into the axial lifting motion of the screw 24, which not only realizes power transmission and supercharging, but also can amplify the output force with the help of the large transmission ratio of the turbine 22 and the worm 23.

[0033] By movably mounting the floating assembly 3 at the bottom end of the screw rod 24, the floating assembly 3 and the positioning block 11 are relatively arranged, so that during the pressing process, it can adapt to the slight deflection of the workpiece 5 to be pressed or the screw rod 24, and prevent the floating assembly 3 and the screw rod 24 from getting stuck and becoming unusable.

[0034] By arranging the driving assembly 4 at the end of the worm 23, the worm 23 can be driven to rotate, and the worm 23 drives the turbine 22 to rotate, and the turbine 22 drives the screw rod 24 to lift the floating assembly 3, thereby realizing the pressing operation of the workpiece 5 to be pressed.

[0035] According to this embodiment, during press-fitting, the workpiece 5 to be press-fitted is placed on the positioning block 11 of the bent arm 1 for fixation; the drive assembly 4 is used to drive the worm 23 in the forward direction to rotate, which then drives the worm 23 to rotate the turbine 22, which drives the screw 24 downward via the turbine 22, and the floating assembly 3 at the bottom of the screw 24 presses down the workpiece 5 to be press-fitted until the required compression amount is met; after press-fitting is completed, the drive assembly 4 is used to drive the worm 23 in the reverse direction to rotate, which then drives the worm 23 to rotate the turbine 22, which drives the screw 24 upward via the turbine 22, until the floating assembly 3 is reset. According to this embodiment, it can be applied to the flexible mixed-line production of multiple vehicle types, is suitable for the assembly rhythm of various vehicle types, and improves the flexibility of the production line.

[0036] Furthermore, in one embodiment, the bottom end of the screw 24 is provided with a spherical cap 241. The planar radius of the cap 241 is greater than the cross-sectional radius of the screw 24. The floating assembly 3 includes a pressure plate 31 and a connecting sleeve 32. The top of the pressure plate 31 is recessed inward, with the spherical surface of the cap 241 located within this recess. The pressure plate 31 and the screw 24 are movably connected via the connecting sleeve 32. In this embodiment, through the above-described technical solution, the cap 241 (convex spherical surface) at the bottom end of the screw 24 fits into the recess (concave spherical surface) at the top end of the pressure plate 31, forming a pair of spherical contact surfaces that can rotate relative to each other. This fit allows for a certain degree of relative tilt (angular displacement) between the screw 24 and the pressure plate 31. For example, when the workpiece 5 to be press-fitted has slight positioning deviations (such as tilt) or when the screw 24 is slightly bent by axial forces, the spherical contact surface automatically adjusts the contact position, ensuring that the pressure plate 31 maintains contact with the workpiece surface, avoiding localized force concentration caused by rigid alignment.

[0037] The flat surface of spherical cap 241 connects to screw rod 24. Its larger radius means the spherical surface of spherical cap 241 has a wider effective contact area. When screw rod 24 and pressure plate 31 are angularly offset, the larger spherical contact area prevents disengagement due to excessive tilt (effective contact is maintained even with smaller offsets). This also increases the spherical contact area and reduces contact stress per unit area (avoiding high-pressure wear caused by point contact), making it particularly suitable for high-load press-fit scenarios.

[0038] The pressure plate 31 and the screw rod 24 are movably connected by the connecting sleeve 32, which can limit the excessive axial separation between the two (ensuring that the pressing force can be transmitted from the screw rod 24 to the pressure plate 31) without restricting the angular rotation of the spherical pair.

[0039] Furthermore, in one embodiment, if Figure 1 As shown, the connecting sleeve 32 is a circular ring structure with a stepped hole. The connecting sleeve 32 is fixedly connected to the top surface of the pressure plate 31, and a receiving cavity for accommodating the spherical crown 241 is formed between the two. In the initial state, there is a gap between the spherical surface and the inner wall of the recess. In this embodiment, through the above technical solution, Figure 1 Take the connecting sleeve 32 in the figure as an example. The connecting sleeve 32 is a circular ring structure with a stepped hole. The inner hole has two sections with different diameters: the section with a smaller diameter forms a clearance fit with the outer periphery of the screw rod 24 (not fixed but limited); the section with a larger diameter is fixed to the top surface of the pressure plate 31, and together they form an "accommodation cavity". The core function of the accommodation cavity is to constrain the range of motion of the spherical crown 241: it not only provides angular floating space for the spherical crown 241, but also limits excessive radial displacement or falling off of the spherical crown 241 through the inner wall of the connecting sleeve 32, thereby avoiding structural disintegration. The setting of the stepped hole can be used for targeted limiting: for example, the section with a smaller diameter can block the plane of the spherical crown 241 (to prevent excessive axial movement of the spherical crown 241), while not hindering the axial uniqueness or angular rotation of the screw rod 24, thus balancing the needs of "constraint" and "activity".

[0040] In the initial state (no load or low load), the spherical surface and the inner wall of the recess do not contact each other, leaving a gap. Only when the screw 24 is subjected to an axial force (such as pressure) will the spherical crown 241 be pushed toward the pressure plate 31, gradually fitting the spherical surface and the inner wall of the recess. In the non-operating state, the two do not contact each other.

[0041] Furthermore, in one embodiment, if Figure 1 As shown, the top of the screw rod 24 is provided with an end plate 242 to prevent the screw rod 24 from falling out. In this embodiment, the end plate 242 is fixed to the top of the screw rod 24, which can be connected by bolts or welding. Figure 1 From the top, the outer diameter of the end plate 242 is larger than the outer diameter of the screw rod 24. Through the above technical solution, the screw rod 24 can be effectively prevented from falling out.

[0042] Furthermore, in one embodiment, if Figure 1 As shown, a bushing 25 is provided at the contact point between the screw rod 24 and the body 21. In this embodiment, through the above-described technical solution, the bushing 25 is a cylindrical or annular structure, fixed within the mounting hole of the body 21 (or having an interference fit with the body 21). The screw rod 24 passes through the inner hole of the bushing 25. This means that there is no direct contact between the screw rod 24 and the body 21, but rather "indirect contact" through the bushing 25. The presence of the bushing 25 prevents scratches or wear on the screw rod 24 and the body 21 during relative displacement.

[0043] Furthermore, in one embodiment, if Figure 1 As shown, the screw 24 passes vertically through the center of the turbine 22, and the worm 23 is located to the side of the turbine 22 and perpendicular to the screw 24. In this embodiment, through the above technical solution, from a spatial layout perspective, the axis of the screw 24 coincides with the axis of the turbine 22. The two form a transmission connection through threads and other means, that is, when the turbine 22 rotates, it can drive the screw 24 to move axially up and down. The axis of the worm 23 is perpendicular to the axis of the screw 24 (turbine 22) and does not intersect. The worm 23 meshes with the teeth of the turbine 22 through its gear teeth, forming a transmission relationship of "worm 23 drives the turbine 22 to rotate." This structure forms a power transmission chain of "rotation of worm 23 → rotation of turbine 22 → axial movement of screw 24", achieving a conversion of power direction and motion form.

[0044] Furthermore, in one embodiment, if Figure 1 As shown, the main body 21 has a mounting cavity 26, and the turbine 22 is rotatably mounted within the mounting cavity 26. In this embodiment, the main body 21 serves as the foundational component of the supercharger assembly 2, and the mounting cavity 26 therein is specifically designed based on the size, shape, and motion requirements of the turbine 22. The turbine 22 is rotatably mounted within the mounting cavity 26 via components such as bearings 27, retaining only the freedom to rotate about its own axis. Radial and axial displacement are constrained by the mounting cavity 26 and associated limiting structures. This allows the turbine 22 to stably receive the power transmitted by the worm 23 and drive the screw 24 for axial movement.

[0045] Furthermore, in one embodiment, if Figure 1 As shown, the arm 1 has a weight-reducing hole 12. In this embodiment, the weight-reducing hole 12 is a through-hole or groove provided in a non-critical stress-bearing area of ​​the arm 1. In actual application, the shape and position of the weight-reducing hole 12 must be determined through structural mechanics analysis, ensuring that the strength of the arm 1 in the press-fitting force transmission path is not weakened and that only redundant material is removed. This technical solution can significantly reduce the weight of the portable press-fitting device.

[0046] Furthermore, in one embodiment, if Figure 2As shown, the drive assembly 4 includes at least one of a motor 41, an electric gun 42, and a handwheel 43, which cooperates with the end of the worm 23 to drive the worm 23 to rotate. The worm 23 then drives the turbine 22 to rotate, which in turn drives the screw 24 to raise and lower the floating assembly 3. In this embodiment, the motor 41, electric gun 42, or handwheel 43 cooperates with the end of the worm 23 via a coupling, gears, or direct connection to transmit power to the worm 23. When the drive assembly 4 is in operation, the worm 23 rotates and drives the meshing turbine 22 to rotate. The turbine 22 then raises and lowers the screw 24 through threaded transmission, ultimately achieving the press-fitting action of the floating assembly 3. These three drive methods can be used individually or in combination to provide flexible power output for the portable press-fitting device.

[0047] In a second aspect, the present application provides a method for using a portable press-fitting device based on any one of the above embodiments. See also Figure 3 , Figure 3 This is a flow chart of the method for using the portable press-fitting device in the embodiment of the present application. Figure 3 As shown, the method for using the portable press-fitting device includes: Step S10 , placing the workpiece 5 to be press-fitted on the positioning block 11 of the bending arm 1 .

[0048] In step S20, the worm 23 is driven forward to rotate by the driving assembly 4, and the worm 23 drives the turbine 22 to rotate, and the turbine 22 drives the screw 24 to lower the floating assembly 3, so that the floating assembly 3 at the bottom of the screw 24 presses down the workpiece 5 to be pressed.

[0049] In step S30 , after the press-fitting is completed, the driving assembly 4 drives the worm 23 in reverse to rotate, the worm 23 drives the turbine 22 to rotate, and the turbine 22 drives the screw 24 to lift the floating assembly 3 until the floating assembly 3 is reset.

[0050] In this embodiment, before press-fitting, the workpiece 5 to be press-fitted is placed on the positioning block 11 of the curved arm 1. The positioning block 11 precisely positions the workpiece 5 to be press-fitted. The rigid connection between the positioning block 11 and the curved arm 1 also provides a stable support base for the workpiece 5 to be press-fitted, ensuring that the workpiece 5 to be press-fitted does not shift during the press-fitting process.

[0051] During press-fitting, the drive assembly 4 drives the worm 23 in a forward direction, which in turn drives the worm gear 22. This in turn drives the screw 24, which in turn lowers the floating assembly 3. This allows the floating assembly 3 at the bottom of the screw 24 to press down on the workpiece 5 to be press-fitted, completing the complete process of "power input → motion conversion → force transmission." The high transmission ratio of the worm gear 22 and 23 amplifies the output force, meeting the press-fitting force requirements of different workpieces. Furthermore, the descent of the floating assembly 3, in conjunction with structures such as the spherical fit and clearance compensation, adapts to subtle surface irregularities of the workpiece, preventing damage to the workpiece caused by rigid downward pressure. This ensures uniform transmission of the press-fitting force and ensures press-fitting quality (e.g., the tightness of the interference fit). After press-fitting is completed, the drive assembly 4 reverses the rotation of the worm 23, which in turn drives the worm gear 22, which in turn drives the screw 24 to raise the floating assembly 3 until the floating assembly 3 is reset. The reverse action of the drive assembly 4 resets the floating assembly 3. The self-locking properties of the worm gear 22 and worm gear 23 play an important role in this process, precisely controlling the position of the floating assembly 3 during its ascent and preventing it from rising excessively due to inertia.

[0052] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0053] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0054] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A portable press-fitting device, characterized in that: include: A curved arm (1), the inner side of the bottom end of which is provided with a positioning block (11) for placing a workpiece (5) to be pressed; A supercharging assembly (2) comprising a body (21), a turbine (22), a worm (23) and a screw (24), wherein the body (21) is fixedly connected to the top end of the bent arm (1), the turbine (22) and the worm (23) are arranged inside the body (21), and meshing transmission is performed between the two, the two ends of the worm (23) horizontally penetrate the body (21), and the screw (24) vertically penetrates the body (21) and the turbine (22), and is threadedly transmitted between the screw (24) and the turbine (22); A floating assembly (3) is movably mounted on the bottom end of the screw rod (24), and the floating assembly (3) is positioned relative to the positioning block (11); A driving assembly (4) is provided at the end of the worm (23) and is used to drive the worm (23) to rotate. The worm (23) drives the turbine (22) to rotate, and drives the screw (24) through the turbine (22) to lift the floating assembly (3).

2. The portable press-fitting device according to claim 1, wherein: A spherical cap (241) is provided at the bottom end of the screw rod (24), and the plane radius of the spherical cap (241) is larger than the cross-sectional radius of the screw rod (24). The floating assembly (3) includes a pressure plate (31) and a connecting sleeve (32). The top of the pressure plate (31) is recessed inward, and the spherical surface of the spherical cap (241) is located in the recess. The pressure plate (31) and the screw rod (24) are movably connected via the connecting sleeve (32).

3. The portable press-fitting device according to claim 2, wherein: The connecting sleeve (32) is a circular ring structure with a stepped hole, and the connecting sleeve (32) is fixedly connected to the top surface of the pressure plate (31), and a receiving cavity for receiving the spherical crown (241) is formed therebetween; In an initial state, a gap is left between the spherical surface and the inner wall of the recess.

4. The portable press-fitting device according to claim 1, wherein: An end plate (242) is provided at the top end of the screw rod (24) to prevent the screw rod (24) from falling out.

5. The portable press-fitting device according to claim 1, wherein: A bushing (25) is provided at the contact portion between the screw rod (24) and the body (21).

6. The portable press-fitting device according to claim 1, wherein: The screw (24) passes vertically through the center of the turbine (22), and the worm (23) is located on the side of the turbine (22) and is vertical to the screw (24).

7. The portable press-fitting device according to claim 1, wherein: The body (21) has a mounting cavity (26), and the turbine (22) is rotatably disposed in the mounting cavity (26).

8. The portable press-fitting device according to claim 7, wherein: The bent arm (1) has a weight-reducing hole (12).

9. The portable press-fitting device according to claim 1, wherein: The driving assembly (4) includes at least one of a motor (41), an electric gun (42) and a handwheel (43), and is used in conjunction with the end of the worm (23) to drive the worm (23) to rotate. The worm (23) drives the turbine (22) to rotate, and drives the screw (24) through the turbine (22) to lift and lower the floating assembly (3).

10. A method for using the portable press-fitting device according to any one of claims 1 to 9, characterized in that: include: Placing the workpiece (5) to be pressed onto the positioning block (11) of the bending arm (1); The worm (23) is driven forward to rotate by the driving assembly (4), the worm (23) drives the turbine (22) to rotate, the turbine (22) drives the screw (24) to descend, and the floating assembly (3) at the bottom end of the screw (24) presses down the workpiece (5) to be pressed; After the press-fitting is completed, the driving assembly (4) drives the worm (23) in the reverse direction to rotate, the worm (23) drives the turbine (22) to rotate, and the turbine (22) drives the screw (24) to rise until the floating assembly (3) is reset.

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