Planetary gear set angle positioning press-fitting device and press-fitting method

Abstract

The present invention relates to the technical field of gear press-fitting of a gearbox, and specifically to a planetary gear set angle positioning press-fitting device and press-fitting method. The press-fitting device includes an upper press-fitting mechanism and a lower press-fitting base; the upper press-fitting mechanism includes a fixing part for installing a sun gear, a telescopic mechanism for driving the fixing part to move and press-fit the sun gear, a sensed part provided on the fixing part, and a sensor provided on one side of the fixing part; the lower press-fitting base includes a servo turntable correspondingly provided below the fixing part, for installing and rotating the planetary carrier; when the end face of the sun gear abuts the end face of the planetary gear, the servo turntable drives the planetary carrier to rotate so that the planetary gear rotates to an angle suitable for press-fitting into the sun gear under the abutting force of the end face of the sun gear; the sensor can sense the sensed part when the sun gear is pressed between the planetary gears. When the sun gear cannot be pressed into place, its bottom surface abuts the top surface of the planetary gear. The servo turntable rotates so that the planetary gear rotates to an appropriate angle when it revolves, and is pressed into the sun gear. The press-fitting can be automated, thereby improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of gear press-fitting of a gearbox, and in particular to a planetary gear set angle positioning press-fitting device and a press-fitting method. Background Art

[0002] At present, in order to provide multiple gears to meet different driving needs, transmissions often use a sun gear to engage with multiple planetary gears. The outer circumferences of the multiple planetary gears engage with the same ring gear, and the multiple planetary gears rotate separately on the pins of the planetary carrier. Since the pins are fixed to the planetary carrier, the planetary gears are subject to the positioning restrictions of the pins and the angle restrictions of the sun gear cams during installation. It is necessary to ensure that when the multiple planetary gears are positioned and installed on the pins of the planetary carrier, the angles of the cams of the multiple planetary gears are adapted to mesh with the sun gear. On conventional production lines, the process of transferring and assembling planetary gears is entirely done manually. Adjusting the circumferential angles of the planetary gears is time-consuming, low production efficiency, and there is a risk of collision with the cams, which is labor-intensive. Summary of the Invention

[0003] The main purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and to provide a planetary gear set angle positioning press-fitting device and press-fitting method.

[0004] The technical solution adopted by the present invention is: a planetary gear set angle positioning press-fitting device, the press-fitting device comprises:

[0005] An upper pressing mechanism, comprising a fixing member for mounting the sun gear, a telescopic mechanism for driving the fixing member to move and press the sun gear, a sensed member provided on the fixing member, and a sensor provided on one side of the fixing member;

[0006] A lower press-fit base includes a servo turntable correspondingly disposed below the fixing member, and is used to mount and rotate a planetary carrier having a plurality of planetary gears. When the end face of the sun gear abuts against the end face of the planetary gear, the servo turntable drives the planetary carrier to rotate, so that the planetary gears rotate to an angle suitable for press-fitting into the sun gear under the abutting force of the sun gear end face.

[0007] The sensor can sense the induced part when the sun gear is pressed between the planetary gears.

[0008] According to a planetary gear set angle positioning and pressing device provided by the present invention, the fixing member is slidably arranged on the telescopic mechanism, and an elastic component is provided between the fixing member and the telescopic mechanism, and the elastic component is used to abut the fixing member to flexibly press the sun gear.

[0009] According to a planetary gear set angle positioning and pressing device provided by the present invention, the sensor is arranged at the telescopic end of the telescopic mechanism; the corresponding sensor of the sensed part is arranged on the fixed part, and when the telescopic end moves downward so that the end face of the sun gear abuts the planetary gear, causing the sensed part to slide relative to the fixed part and then be located outside the sensing range of the sensor.

[0010] According to a planetary gear set angle positioning and pressing device provided by the present invention, the telescopic end of the telescopic mechanism is provided with a connecting sleeve, one end of the fixing member is slidably arranged in the connecting sleeve, and the two ends of the elastic component act on the connecting sleeve and the fixing member to abut the fixing member to flexibly press the sun gear.

[0011] According to the planetary gear set angle positioning and press-fitting device provided by the present invention, the elastic component includes a spring, and the spring is arranged in the connecting sleeve, with two ends respectively abutting the connecting sleeve and the fixing member.

[0012] According to the present invention, a planetary gear set angle positioning and pressing device further includes a clamping mechanism provided on the telescopic mechanism, wherein the two clamping plates of the clamping mechanism are respectively located on both sides of the fixing member and are used to clamp the planet carrier after the sun gear is pressed.

[0013] According to a planetary gear set angle positioning and pressing device provided by the present invention, the servo turntable includes a servo motor and a positioning turntable transmission-connected to the servo motor, and the positioning turntable is used to position and install the planet carrier.

[0014] According to the planetary gear set angle positioning and pressing device provided by the present invention, the positioning turntable is provided with positioning holes for positioning and installing the planet carrier.

[0015] According to a planetary gear set angle positioning and pressing device provided by the present invention, the servo turntable also includes a mounting base and a transmission platform coaxial with the positioning turntable, the servo motor is arranged on the mounting base and engages with the transmission platform, and the positioning turntable is fixed on the transmission platform.

[0016] Another aspect of the present invention provides a planetary gear set angle positioning press-fitting method, using a planetary gear set angle positioning press-fitting device provided by the present invention, the press-fitting method includes:

[0017] Install the sun gear on the fixing member so that it is fixed in the circumferential direction;

[0018] After the planet carrier with the planetary gears installed is positioned and mounted on the servo turntable, the telescopic mechanism moves the fixing piece downward;

[0019] When the end face of the sun gear abuts against the end faces of the plurality of planetary gears, the planet carrier is rotated so that the planetary gears are rotated to an angle suitable for press-fitting into the sun gear under the abutting force of the sun gear;

[0020] Under the flexible thrust of the elastic component, the sun gear is pressed between the multiple planetary gears and meshes with them;

[0021] Use the sensor to sense the induced parts to determine whether the sun gear is pressed between the planetary gears.

[0022] According to a planetary gear set angle positioning and press-fitting method provided by the present invention, the method further includes fixing a sensor at the telescopic end of a telescopic mechanism; when the end face of the sun gear abuts against the end faces of multiple planetary gears, the telescopic end of the telescopic mechanism continues to press downward, causing the sensed part to slide relative to the sensor following the fixed part, thereby changing the sensing state of the sensor to the sensed part.

[0023] According to a planetary gear set angle positioning press-fitting method provided by the present invention, the sensing state includes a sensing state and a non-sensing state of sensing the sensed part; the changing of the sensing state of the sensor to the sensed part includes causing the sensed part to follow the fixed part and slide out of the sensing range of the sensor, and the sensor is in a non-sensing state;

[0024] The method of using the sensor to sense the sensed component to determine whether the sun gear is pressed between the planetary gears includes determining that the sun gear is not pressed between the planetary gears when the sensor changes from a sensed state to a non-sensed state.

[0025] According to a planetary gear set angle positioning press-fitting method provided by the present invention, the sensor is used to sense the sensed part to determine whether the sun gear is pressed between the planetary gears, including when the sensor changes from a non-sensing state to a sensing state, determining that the sun gear is successfully pressed between the planetary gears.

[0026] The beneficial effects of the present invention include: 1. After the sun gear is installed by the fixing part and the planet carrier and the planet gear are installed by the servo turntable, the telescopic mechanism drives the fixing frame to move and press-fit the sun gear. When the circumferential angles (i.e., convex tooth angles) of multiple planet gears cannot be pressed into the sun gear, the bottom end face of the sun gear abuts the top surfaces of multiple planet gear teeth. The rotation of the servo turntable drives the planet carrier to rotate. The abutting force of the sun gear causes the planet gear to rotate and adjust the angles of the convex teeth until the convex tooth angles of multiple planet gears are suitable for pressing into the sun gear. The sensed part moves with the fixing part. Through the sensor, the sensed part can be sensed by the corresponding sensor when the sun gear is pressed into place, and it is determined that the press-fitting is in place. The entire press-fitting process can be completed automatically by the control system, saving manpower, improving and unifying the assembly quality, and improving production efficiency.

[0027] The fixing part is slidingly arranged on the telescopic mechanism, and an elastic component is provided between the fixing part and the telescopic mechanism. When the angle of the convex teeth of the planetary gear is not suitable for pressing into the sun gear, the telescopic mechanism drives the fixing part to move down until the bottom surface of the sun gear abuts the top surface of the planetary gear. The fixing part can slide relative to the telescopic mechanism to avoid damage to the sun gear or other components such as the planetary gear due to rigid collision. When the rotation angle of the planetary gear is appropriate, the elastic component flexibly presses the sun gear, which can avoid damage to the convex teeth due to excessive force, thereby improving the assembly quality.

[0028] The sensor moves with the telescopic end of the telescopic mechanism and corresponds to the sensed part on the fixed part. When the convex tooth angle of the planetary gear is not appropriate, the sun gear abuts the top surface of the planetary gear, causing the fixed part to slide upward relative to the telescopic mechanism. The sensed part moves with the fixed frame, causing the sensor's sensing state of the sensed part to change, and it is determined that the sun gear is not pressed between the planetary gears;

[0029] The structure of the sliding connection between the telescopic mechanism and the fixed member is simple. A connecting sleeve is provided at the telescopic end. One end of the fixed member slides inside the connecting sleeve, providing sliding space for the fixed member relative to the connecting sleeve. The elastic component acts on the connecting sleeve and the fixed member to facilitate flexible press-fitting of the sun gear.

[0030] The elastic component has a simple structure, and the use of a spring as the elastic component is low-cost. The two ends of the spring abut against the connecting sleeve and the fixing member, which facilitates production and assembly;

[0031] The servo turntable of the present invention has a simple structure, and the servo motor drives the positioning turntable to rotate to drive the planetary carrier to rotate, which is easy to use.

[0032] The positioning holes on the positioning turntable are convenient for inserting the output shaft of the planet carrier to achieve positioning and installation of the planet carrier;

[0033] The press-fitting method of the present invention fully utilizes the structural characteristics of the press-fitting device provided by the present invention. After the sun gear is sleeved on the fixing part, the telescopic mechanism telescopes downward and moves the fixing part. When the convex tooth angles of multiple planetary gears are suitable, the sun gear can be directly pressed in. When the convex tooth angles of multiple planetary gears are not suitable for pressing in the sun gear, the bottom surface of the sun gear will abut against the top surface of the planetary gear during the downward movement of the fixing part. The elastic component can avoid the rigid collision between the sun gear and the planetary gear. Under the abutting force of the sun gear, the planet carrier is rotated to rotate the planetary gear to a suitable angle. The elastic component flexibly pushes to complete the press-fitting of the sun gear. According to the change in the state of the sensor caused by the movement of the sensing part following the fixed part, it can be judged whether the sun gear is pressed in between the planetary gears. The steps are simple and the press-fitting efficiency is high.

[0034] The sensor continues to move downward following the telescopic end, and the sensed part follows the fixed part to move relative to the sensor and out of the sensing range, causing the sensor's sensing state of the sensed part to change, making it easier to determine whether the sun gear is pressed between the planetary gears based on the change in the sensing state;

[0035] When it is in the non-sensing state, it means that the sensed part is not sensed, that is, the sensed part moves up with the fixed part, and the sun gear is not pressed between the planetary gears, which makes it easy to judge the pressing condition of the sun gear.

[0036] The present invention relates to an angle positioning and pressing device for a planetary gear set. The sun gear is installed through a fixing part, and the telescopic mechanism drives the fixing frame to move and press the sun gear. When the angle of the convex teeth of the planet gear is not appropriate, the bottom surface of the sun gear abuts the top surface of the planet gear. Under the abutting force of the sun gear, the servo turntable rotates the planetary frame to make the planet gear rotate to the appropriate angle and press it into the sun gear. The sensor determines whether the press is in place based on whether it senses the sensed part that moves with the telescopic end. The device is easy to use and has high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 : Schematic diagram of the structure of the planetary gear set angle positioning press-fitting device;

[0038] Figure 2 : A three-dimensional schematic diagram of an embodiment of an upper press-fitting mechanism;

[0039] Figure 3 : Schematic diagram of the cross-sectional structure in which the fixing member is slidably arranged on the telescopic mechanism;

[0040] Figure 4 : Schematic diagram of the three-dimensional structure of the servo turntable;

[0041] Figure 5 : Schematic cross-sectional view of the servo turntable;

[0042] Among them: 1—telescopic mechanism; 11—mounting plate; 2—fixing part; 21—sun gear; 3—sensed part; 4—sensor; 5—elastic component; 6—connecting sleeve; 61—vertical sliding hole; 7—servo turntable; 71—servo motor; 72—transmission platform; 73—positioning turntable; 731—positioning hole; 8—clamping mechanism; 9—planetary gear. DETAILED DESCRIPTION

[0043] The following describes embodiments of the present invention in detail, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and the drawings are not drawn to scale and are intended to illustrate the present invention and are not to be construed as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to 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 the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0046] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Multiple planetary gears 9 are positioned and installed on the pins of the planetary carrier. The central axes of the planetary gears 9 and the sun gear 21 are fixed. The convex tooth angles of multiple planetary gears 9 need to be appropriate to engage with and install the sun gear 21. The outer sides of multiple planetary gears 9 engage with the ring gear. In some scenarios, the ring gear is fixed on the housing and its convex tooth angle is fixed. After the sun gear 21 is pressed and engaged with multiple planetary gears 9 to form a planetary gear set, the planetary gear 9 needs to be rotated to the set angle before it can directly engage with the ring gear.

[0048] The present invention relates to an angle positioning and press-fitting device for a planetary gear set, which is used to adjust the convex tooth angles of multiple planetary gears 9 to adapt to the press-fitting of a sun gear 21. The sun gear 21 is installed by fixing a fixing member 2 in a circumferential direction, and a telescopic mechanism 1 drives the fixing frame to move and press-fit the sun gear 21. When the convex tooth angles of multiple planetary gears 9 are not appropriate, the bottom surface of the sun gear 21 abuts the top surface of the planetary gear 9 during press-fitting. Under the abutting force of the sun gear 21, the servo turntable 7 rotates the planetary frame to make the planetary gear 9 rotate to a suitable angle and press into the sun gear 21. The sensor 4 determines whether the press-fitting is in place based on whether it senses the sensed member 3 that moves with the telescopic end. After the sun gear 21 engages with the planetary gear 9, the servo turntable 7 can rotate a set angle to make the angles of multiple planetary gears 9 suitable for engaging the ring gear. The device is easy to use and has high efficiency.

[0049] A planetary gear set angle positioning press-fitting device, specifically, Figure 1-5As shown, it includes an upper pressing mechanism and a lower pressing base, the upper pressing mechanism includes a fixing part 2 for installing the sun gear 21, a telescopic mechanism 1 for driving the fixing part 2 to move and press the sun gear 21, a sensed part 3 provided on the fixing part 2, and a sensor 4 provided on one side of the fixing part 2 for sensing the sensed part 3; the lower pressing base includes a servo turntable 7 correspondingly provided below the fixing part 2, for installing and rotating a planetary carrier provided with a plurality of planetary gears 9; when the end face of the sun gear 21 abuts against the end face of the planetary gear 9, the servo turntable 7 drives the planetary carrier to rotate so that the planetary gear 9 is in the planetary gear 9. The end face of the male gear 21 is rotated under the abutment force to an angle suitable for press-fitting into the sun gear 21; the sensor 4 can sense the induced part 3 when the sun gear 21 is pressed between the planetary gears 9; the fixing part 2 is used to fix the sun gear 21 circumferentially, and an interference fit connection method can be adopted to ensure that there is a certain friction between the sun gear 21 and the fixing part 2. The friction force fixes the sun gear 21 circumferentially, and can overcome the friction force generated by the planetary gear 9 on the sun gear 21 when the sun gear 21 abuts the planetary gear 9 and the planetary carrier rotates, so that the sun gear 21 does not rotate and the planetary gear 9 rotates when it revolves.

[0050] In a specific implementation scheme, the fixing part 2 is provided at the telescopic end of the telescopic mechanism 1, and the sensor 4 is fixedly arranged and located on one side of the fixing part 2. When the telescopic end is extended and retracted, it moves relative to the sensed part 3 fixed to the fixing part 2, and the sensing state changes; in most cases, the convex tooth angles of multiple planetary gears 9 are not suitable, and the sun gear 21 cannot be directly pressed between the multiple planetary gears 9, and the angles of the convex teeth of the planetary gears 9 need to be adjusted; when the convex tooth angles of the planetary gears 9 are not suitable when the sun gear 21 is pressed into, the bottom surface of the sun gear 21 abuts against the top surface of the planetary gears 9, and cannot be pressed into the meshing planetary gears 9 between the planetary gears 9, that is, when the sun gear 21 is not pressed into place, the sensed part 3 is not within the sensing range of the sensor 4. When the sun gear 21 is pressed into place, the sensed part 3 moves down into the sensing range of the sensor 4, and the sensor 4 can sense the sensed part 3, and judge that the sun gear 21 is successfully pressed into between the planetary gears 9. The sensor 4 and the sensed part 3 are existing technologies and will not be elaborated here.

[0051] In one embodiment, if Figure 3As shown, the fixed member 2 is vertically slidably mounted on the telescopic end (the end opposite the fixed end) of the telescopic mechanism 1, with an elastic member 5 disposed between the fixed member 2 and the telescopic mechanism 1. The elastic member 5 is used to abut the fixed member 2 and flexibly press the sun gear 21. The fixed member 2 is slidably mounted on the telescopic mechanism 1, with the elastic member 5 disposed between the fixed member 2 and the telescopic mechanism 1. When the angle of the protruding teeth of the planetary gear 9 is not suitable for pressing into the sun gear 21, the telescopic mechanism 1 drives the fixed member 2 downward until the bottom surface of the sun gear 21 abuts the top surface of the planetary gear 9. The fixed member 2 can then slide relative to the telescopic mechanism 1, preventing damage to the sun gear 21 or other components such as the planetary gear 9 due to rigid collision. When the planetary gear 9 rotates to the appropriate angle, the elastic member 5 flexibly presses the sun gear 21, preventing damage to the protruding teeth due to excessive force, thereby improving assembly quality. Preferably, the elastic member 5 experiences almost no compression when the sun gear 21 is pressed into place, and the maximum displacement of the telescopic end is the same as the displacement of the sun gear 21 when pressed into place.

[0052] Based on the fixed part 2 being slidably arranged on the telescopic mechanism 1, as shown in FIG. Figure 3 As shown, sensor 4 is located at the telescopic end of telescopic mechanism 1 and moves with the telescopic end. The sensed member 3 is located on fixed member 2, corresponding to sensor 4. Before press-fitting, sensor 4 can sense the sensed member 3, indicating a sensed state. During press-fitting, the telescopic end moves downward, causing the end face of sun gear 21 to abut against planetary gears 9. This causes the sensed member 3 to slide relative to sensor 4 following fixed member 2. After this, the sensed member 3 is outside the sensing range of sensor 4, and sensor 4 enters a non-sensing state, which can be used to determine if sun gear 21 is not press-fitted into place. When the bottom surface of sun gear 21 abuts the top surface of planetary gears 9, servo turntable 7 rotates. Due to the abutting force of sun gear 21, the planet carrier rotates, causing the planetary gears 9 to rotate until the angles of multiple planetary gears 9 are suitable for press-fitting into and engaging with sun gear 21. Under the thrust of elastic member 5 on fixed member 2, sun gear 21 is pressed into engagement with the planetary gears 9. The sensed member moves downward with fixed member 2 and is within the sensing range of sensor 4. The state changes from a non-sensing state to a sensing state, indicating that sun gear 21 is press-fitted into place.

[0053] In certain embodiments, as Figure 3As shown, the telescopic end of the telescopic mechanism 1 is provided with a mounting plate 11, on which a connecting sleeve 6 is fixed. One end of the fixing member 2 is slidably disposed within the connecting sleeve 6. The two ends of the elastic component 5 act on the connecting sleeve 6 and the fixing member 2 to abut the fixing member 2 and flexibly press the sun gear 21. The sliding stroke of the fixing member 2 is greater than the axial length of the sun gear 21, that is, the vertical gap between the top of the fixing member 2 and the connecting sleeve 6 is greater than the axial length of the sun gear 21, thereby preventing the fixing member 2 from sliding relatively small relative to the connecting sleeve 6 and still causing the sun gear 21 to rigidly contact the planetary gears 9. The elastic component 5 can be disposed inside the connecting sleeve barrel to abut the fixing member 2, or it can be disposed outside the connecting sleeve 6 to abut the fixing member 2. The structure of the sliding connection between the telescopic mechanism 1 and the fixed part 2 is simple. A connecting sleeve is provided at the telescopic end, and one end of the fixed part 2 is slidably arranged in the connecting sleeve, providing sliding space for the fixed part 2 relative to the connecting sleeve. The elastic component 5 acts on the connecting sleeve and the fixed part 2 to facilitate the flexible press-fitting of the sun gear 21, which can avoid the rigid collision when the bottom surface of the sun gear 21 abuts the top surface of the planetary gear 9, thereby protecting each component.

[0054] The telescopic end of the telescopic mechanism 1 is provided with a connecting sleeve 6, such as Figure 3 As shown, the elastic component 5 comprises a spring; preferably, the spring is disposed within the connecting sleeve 6, with its ends abutting the connecting sleeve 6 and the fixing member 2, respectively. The spring can be initially compressed to ensure a certain thrust. The elastic component 5 has a simple structure, and using a spring as the elastic component 5 is cost-effective. The abutment of the spring's ends against the connecting sleeve and the fixing member 2 facilitates production and assembly.

[0055] In a specific embodiment, Figure 3 As shown, in order to reduce the vertical space occupied by the connecting sleeve 6 and the fixing part 2 as a whole, a vertical sliding hole 61 is provided on the connecting sleeve 6, and the sensed part 3 is provided at one end of the fixing part 2 located in the connecting sleeve 6 and is penetrated by the vertical sliding hole 61. When the fixing part 2 slides relative to the connecting sleeve 6, the sensed part 3 slides in the vertical sliding hole 61.

[0056] In a preferred embodiment, Figure 1-2 As shown, the pressing device also includes a clamping mechanism 8, which is arranged on the telescopic end of the telescopic mechanism 1 (the mounting plate 11 shown in the figure). The two clamping plates of the clamping mechanism 8 are respectively located on both sides of the fixing part 2, and are used to clamp the planetary carrier after the sun gear 21 is pressed. After the sun gear 21 is clamped and engaged with the planetary gear 9 installed on the planetary carrier to form a planetary gear 9 assembly, the telescopic mechanism 1 is extended and moved upward to move the clamping mechanism 8, so that the planetary gear 9 assembly is separated from the servo turntable 7, which is convenient for subsequent production processes.

[0057] In one embodiment, the servo turntable 7 is described as follows. Figure 4As shown, the servo turntable 7 includes a servo motor 71 and a positioning turntable 73 connected to the servo motor 71. The positioning turntable 73 is used to position and install the planet carrier. The servo turntable 7 has a simple structure and is easy to use because the servo motor 71 drives the positioning turntable 73 to rotate to drive the planet carrier to rotate.

[0058] Preferably, the rotation control of the servo turntable 7 can be designed to be linked with the sensing state of the sensor 4; the sensor 4 is provided at the telescopic end of the telescopic mechanism 1, and when the sensing part corresponding to the sensor 4 is provided on the fixed part 2, the initial state of the sensor 4 is the sensing state, the bottom surface of the sun gear 21 is in contact with the top surface of the planetary gear 9 to make the fixed part 2 slide, and the sensed part 3 moves upward relative to the sensor 4 to leave the sensing range of the sensor 4, so that the servo turntable 7 is triggered to rotate when the sensor 4 is in the non-sensing state; after the planet carrier rotates to make the angle of the planetary gear 9 suitable for pressing into the sun gear 21, the servo turntable 7 is triggered to stop rotating when the sensor 4 changes from the non-sensing state to the sensing state.

[0059] Based on the servo turntable 7 including a servo motor 71, as Figure 5 As shown, the positioning turntable 73 is provided with a positioning hole 731 for positioning and installing the planet carrier. The output shaft of the planet carrier can be inserted through the positioning hole 731 to achieve positioning and installing the planet carrier.

[0060] Based on the servo turntable 7 including a servo motor 71, as Figure 5 As shown, the servo turntable 7 also includes a mounting base and a transmission platform 72 coaxial with the positioning turntable 73. The servo motor 71 is arranged on the mounting base and engages with the transmission platform 72. The positioning turntable 73 is fixed on the transmission platform 72, and the positioning turntable 73 is driven and rotated by the transmission platform 72.

[0061] In actual use, the press-fitting device uses a telescopic cylinder as the telescopic mechanism 1. A mounting plate 11 is provided at the telescopic end of the telescopic mechanism 1. Mounting plate 11 is provided with a connecting sleeve 6 and an inductor 4 located on one side of the connecting sleeve 6. One end of a rod-shaped fixing member 2 slides within the connecting sleeve 6. A spring is provided within the connecting sleeve 6, with its ends respectively contacting the connecting sleeve 6 and the fixing member 2. A limiter is provided within the connecting sleeve 6 to prevent the fixing member 2 from slipping off the connecting sleeve 6 under the thrust of the spring. The downward movement of the telescopic mechanism 1 is equal to the displacement of the sun gear 21 between the planetary gears 9 when pressed. A servo motor 71 drives a positioning dial 73, which has a positioning hole 731. Before press-fitting, the output shaft of the planetary carrier can be inserted into the positioning hole 731, and then the planetary gear 9 can be fitted onto the planetary carrier's pin before the sun gear 21 is press-fitted.

[0062] Another aspect of the present invention further provides a planetary gear set angle positioning press-fitting method, using the planetary gear set angle positioning press-fitting device provided by the present invention, the fixing member 2 of the press-fitting device is slidably arranged on the telescopic mechanism 1, and an elastic member 5 is provided between the fixing member 2 and the telescopic mechanism 1. The press-fitting method includes:

[0063] S1. Install the sun gear 21 on the fixing member 2 so that it is circumferentially fixed. When in use, the fixing member 2 is a rod-shaped structure, and the sun gear 21 is inserted into the fixing member 2 with an interference fit. The friction between the sun gear 21 and the fixing member 2 achieves circumferential fixation.

[0064] S2. After the planet carrier with the planetary gears 9 mounted thereon is positioned and mounted on the servo turntable 7, the telescopic mechanism 1 moves the fixing member 2 downward. During the downward movement of the fixing member 2, when the angles of the multiple planetary gears 9 are not appropriate, the end face of the sun gear 21 abuts against the end faces of the planetary gears 9;

[0065] S3. When the end face of the sun gear 21 abuts against the end faces of the plurality of planetary gears 9, the planet carrier is rotated so that the planetary gears 9 are rotated under the abutting force of the sun gear 21 to an angle suitable for press-fitting into the sun gear 21;

[0066] S4. Under the flexible thrust of the elastic component 5, the sun gear 21 is pressed between the multiple planetary gears 9 and meshes with them;

[0067] S5 , using the sensor 4 to sense the sensed component 3 to determine whether the sun gear 21 is pressed into between the planetary gears 9 .

[0068] According to the present invention, a planetary gear set angle positioning press-fitting method further includes:

[0069] S6. Before the telescopic mechanism 1 moves down the fixed part 2, the sensor 4 is fixed to the telescopic end of the telescopic mechanism 1 so that the sensed part 3 can be sensed; when the end face of the sun gear 21 abuts against the end faces of multiple planetary gears 9, the telescopic end of the telescopic mechanism 1 continues to press down, so that the sensed part 3 follows the fixed part 2 and slides relative to the sensor 4, thereby changing the sensing state of the sensor 4 to the sensed part 3, and judging whether the sun gear 21 is pressed between the planetary gears 9 by the change in the sensing state.

[0070] According to a planetary gear set angle positioning press-fitting method provided by the present invention, in step S6, the sensing state includes a sensing state and a non-sensing state of the sensed member 3; the changing of the sensing state of the sensor 4 to the sensed member 3 includes causing the sensed member 3 to slide along the fixed member 2 out of the sensing range of the sensor 4, and the sensor 4 is in a non-sensing state;

[0071] In step S5 , the sensor 4 is used to sense the sensed component 3 to determine whether the sun gear 21 is pressed between the planetary gears 9 , including determining that the sun gear 21 is not pressed between the planetary gears 9 when the sensor 4 changes from a sensitive state to a non-sensitive state.

[0072] According to a planetary gear set angle positioning press-fitting method provided by the present invention, in step S5, the sensor 4 is used to sense the sensed part 3 to determine whether the sun gear 21 is pressed between the planetary gears 9, including when the sensor 4 changes from a non-sensing state to a sensing state, it is determined that the sun gear 21 is successfully pressed between the planetary gears 9.

[0073] During the actual press-fitting, the sensor 4 is arranged at the telescopic end of the telescopic mechanism 1, the fixing part 2 is slidably arranged on the telescopic end, and an elastic component 5 is provided between the telescopic end and the fixing part 2. The inducted part 3 is arranged on the fixing part 2 corresponding to the sensor 4; the sun gear 21 is inserted into the fixing part 2 with an interference fit to fix it circumferentially, the planetary carrier is installed on the servo turntable 7, and the planetary gear 9 is sleeved on the pin of the planetary carrier; the telescopic mechanism 1 is extended and the fixing part 2 is moved downward. Since the protrusions of multiple planetary gears 9 are not suitable for directly pressing into the sun gear 21, the bottom surface of the sun gear 21 is abutted against the top surface of the planetary gear 9. The telescopic end of the telescopic mechanism 1 continues to move downward, and the fixing part 2 slides upward relative to the telescopic end. The elastic component 5 is compressed to prevent the sun gear 21 from It collides rigidly with the planetary gear 9, and the sensed part 3 follows the fixed part 2 to slide and move relative to the sensor 4 out of the sensing range. The sensing state of the sensor 4 changes to a non-sensing state, and it is judged that the sun gear 21 is not pressed into place. The servo turntable 7 rotates to drive the planetary carrier to rotate. The multiple planetary gears 9 rotate when they are affected by the abutment force of the sun gear 21 to adjust the angle of their convex teeth to be suitable for pressing into the sun gear 21. When the convex tooth angles of the multiple planetary gears 9 are appropriate, they are flexibly pressed into the sun gear 21 under the elastic force of the elastic component 5 and meshed with the multiple planetary gears 9. The sensed part 3 follows the fixed part 2 to move down to one side of the sensor 4, and the sensing state changes from a non-sensing state to a sensitive state, and it is judged that the sun gear 21 is pressed into place.

[0074] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary gear set angle positioning press-fitting device, characterized by: include, An upper pressing mechanism, comprising a fixing member for mounting the sun gear, a telescopic mechanism for driving the fixing member to move and press the sun gear, a sensed member provided on the fixing member, and a sensor provided on one side of the fixing member; A lower press-fit base includes a servo turntable correspondingly disposed below the fixing member, and is used to mount and rotate a planetary carrier having a plurality of planetary gears. When the end face of the sun gear abuts against the end face of the planetary gear, the servo turntable drives the planetary carrier to rotate, so that the planetary gears rotate to an angle suitable for press-fitting into the sun gear under the abutting force of the sun gear end face. The sensor can sense the induced part when the sun gear is pressed between the planetary gears; The fixing member is slidably mounted on the telescopic mechanism, and an elastic member is provided between the fixing member and the telescopic mechanism, the elastic member being used to abut against the fixing member and flexibly press the sun gear; The telescopic end of the telescopic mechanism is provided with a connecting sleeve, one end of the fixed part is slidably arranged in the connecting sleeve, and the two ends of the elastic component act on the connecting sleeve and the fixed part to abut against the fixed part and flexibly press the sun gear; a vertical sliding hole is provided on the connecting sleeve, and the sensed part is provided at one end of the fixed part located in the connecting sleeve and penetrates the vertical sliding hole, and the sensed part slides in the vertical sliding hole when the fixed part slides relative to the connecting sleeve.

2. The planetary gear set angle positioning press-fitting device according to claim 1, characterized in that: The sensor is arranged at the telescopic end of the telescopic mechanism; the corresponding sensor of the sensed part is arranged on the fixed part. When the telescopic end moves downward so that the end face of the sun gear abuts the planetary gear, causing the sensed part to slide relative to the sensor following the fixed part, the sensed part is located outside the sensing range of the sensor.

3. The planetary gear set angle positioning press-fitting device according to claim 2, characterized in that: The elastic component comprises a spring, which is arranged in the connecting sleeve and has two ends respectively abutting against the connecting sleeve and the fixing piece.

4. The planetary gear set angle positioning press-fitting device according to claim 1, characterized in that: The servo turntable includes a servo motor and a positioning turntable connected to the servo motor in a transmission manner. The positioning turntable is used for positioning and installing the planet carrier.

5. The planetary gear set angle positioning press-fitting device according to claim 4, characterized in that: The positioning turntable is provided with positioning holes for positioning and installing the planet carrier.

6. A planetary gear set angle positioning press-fitting method, characterized by: Using the planetary gear set angle positioning press-fitting device according to any one of claims 1 to 5, the press-fitting method includes: Install the sun gear on the fixing member so that it is fixed in the circumferential direction; After the planet carrier with the planetary gears mounted thereon is positioned and mounted on the servo turntable, the telescopic mechanism moves the fixing piece downward; When the end face of the sun gear abuts against the end faces of the multiple planetary gears, the planet carrier is rotated so that the planetary gears are rotated to an angle suitable for press-fitting into the sun gear under the abutting force of the sun gear; Under the flexible thrust of the elastic component, the sun gear is pressed between the multiple planetary gears and meshes with them; Use the sensor to sense the sensed part to determine whether the sun gear is pressed between the planetary gears.

7. A planetary gear set angular positioning press-fitting method according to claim 6, characterized in that: It also includes fixing the sensor to the telescopic end of the telescopic mechanism; when the end face of the sun gear abuts the end faces of multiple planetary gears, the telescopic end of the telescopic mechanism continues to press downward, causing the sensed part to slide relative to the sensor following the fixed part, thereby changing the sensing state of the sensor to the sensed part.

8. A planetary gear set angular positioning press-fitting method according to claim 7, characterized in that: The sensing state includes a sensing state and a non-sensing state of sensing the sensed part; the changing of the sensing state of the sensor to the sensed part includes causing the sensed part to slide along the fixed part and leave the sensing range of the sensor, and the sensor is in a non-sensing state; The method of using the sensor to sense the sensed component to determine whether the sun gear is pressed between the planetary gears includes determining that the sun gear is not pressed between the planetary gears when the sensor changes from a sensed state to a non-sensed state.

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