Planetary gear set 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 press-fitting device and method for a planetary gear set. The press-fitting device includes an upper press-fitting mechanism, the upper press-fitting mechanism includes a clamping mechanism for clamping the planetary gear set, a first telescopic mechanism for driving the clamping mechanism to rise and fall, a second telescopic mechanism for driving the first telescopic mechanism to rise and fall, and a stroke sensor for detecting the actual downward pressing distance of the planetary gear set to determine whether it is pressed into the ring gear; the telescopic end of the second telescopic mechanism abuts the planetary gear set; the lower press-fitting mechanism includes a fixed base for fixing the ring gear, a third telescopic mechanism with the telescopic end passing through the ring gear, and a guide plate provided on the third telescopic mechanism that can pass through the ring gear, the guide plate is used to receive the planetary gear set and cooperate with the second telescopic mechanism to press-fit the planetary gear set into the ring gear. During press-fitting, the actual downward pressing distance is measured by the stroke sensor to determine whether the press-fitting is in place. The overall use is convenient and efficiency can be improved.

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 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 multiple planetary gears rotate separately on the pins installed on the planetary carrier to form a planetary gear set. The outer peripheral sides of the multiple planetary gears of the planetary gear set engage with the same ring gear. On conventional production lines, the process of engaging the multiple planetary gears of the planetary gear set with the ring gear is entirely done manually, which has low production efficiency, risks of bumping into protruding teeth, and consumes manpower. Summary of the Invention

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

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

[0005] An upper press-fitting mechanism includes a clamping mechanism for clamping the planetary gear set, a first telescopic mechanism for driving the clamping mechanism to rise and fall, a second telescopic mechanism for driving the first telescopic mechanism to rise and fall, and a travel sensor for detecting the actual downward pressure distance of the planetary gear set to determine whether the ring gear is pressed into place; the telescopic end of the second telescopic mechanism abuts the planetary gear set; the planetary gear set includes a planet carrier, a plurality of planetary gears disposed on the planet carrier, and a sun gear meshing with the plurality of planetary gears;

[0006] The lower pressing mechanism includes a fixed base for fixing the ring gear, a third telescopic mechanism with the ring gear passed through the telescopic end, and a guide plate provided on the third telescopic mechanism and capable of passing through the ring gear. The guide plate is used to receive the planetary gear set and cooperate with the second telescopic mechanism to press the planetary gear set into the ring gear.

[0007] According to a planetary gear set press-fitting device provided by the present invention, the telescopic end of the second telescopic mechanism is provided with a pressing head abutting the planetary gear set, which is used to cooperate with the guide plate of the third telescopic mechanism to press the planetary gear set into the ring gear after the clamping mechanism is opened and moved upward.

[0008] According to a planetary gear set press-fitting device provided by the present invention, a travel rod is provided at the telescopic end of the first telescopic mechanism, and the travel rod slides and penetrates the travel sensor; the travel sensor measures the actual downward pressing distance of the planetary gear set according to the displacement of the travel rod, and the actual downward pressing distance is used to compare the preset downward pressing distance for pressing the planetary gear set into the ring gear to determine whether the planetary gear set is pressed into the ring gear.

[0009] According to a planetary gear set pressing device provided by the present invention, the telescopic end of the second telescopic mechanism is provided with a mounting plate; the pressing head includes a plurality of pressure columns spaced apart on the mounting plate and correspondingly abutting the end faces of the planetary gears; a first avoidance hole is penetrated by the mounting plate, and the clamping mechanism slides vertically through the first avoidance hole.

[0010] According to a planetary gear set press-fitting device provided by the present invention, the gear ring is fixed on the housing, and the housing is fixed on the fixed base according to a set orientation. The top of the housing is open and the bottom is provided with a second avoidance hole for the guide plate to pass through.

[0011] According to a planetary gear set pressing device provided by the present invention, it also includes a servo turntable located below the upper pressing mechanism when the sun gear and the planetary gear are pressed to form the planetary gear set, and the servo turntable is used to install and rotate the planetary carrier provided with multiple planetary gears; the telescopic end of the second telescopic mechanism is slidably provided with a fixing part for installing the sun gear, and an elastic part is provided between the fixing part and the fixing part; the telescopic end of the second telescopic mechanism is fixed with a sensor; the fixing part is provided with a sensed part corresponding to the sensor; the fixing part slides relative to the sensor when the end face of the sun gear abuts the end face of the planetary gear, and the sensed part is located outside the sensing range of the sensor after following the fixed part to slide relative to the sensor.

[0012] According to a planetary gear set press-fitting device provided by the present invention, the servo turntable drives the planet carrier to rotate when the end face of the sun gear abuts the end face of the planet gear, so that the planet gear rotates to an angle suitable for press-fitting into the sun gear under the abutment force of the sun gear end face; after the sun gear is pressed between the planet gears, the servo turntable rotates to a set angle so that the convex teeth of the planet gear are suitable for engaging with the ring gear with a fixed meshing angle.

[0013] According to a planetary gear set pressing device provided by the present invention, the telescopic end of the second telescopic mechanism is fixedly provided with the first telescopic mechanism, the sensor and the connecting sleeve located on one side of the sensor, one end of the fixing part is slidably arranged in the connecting sleeve, and the two ends of the elastic component act on the connecting sleeve and the fixing part to abut the fixing part to flexibly press the sun gear; the telescopic end of the first telescopic mechanism is provided with the clamping mechanism.

[0014] Another aspect of the present invention further provides a planetary gear set press-fitting method, using a planetary gear set press-fitting device provided by the present invention, the press-fitting method includes:

[0015] The planetary gear set is mounted on the telescopic end of the second telescopic mechanism at a first set circumferential angle, and the clamping mechanism clamps and fixes the planetary gear set;

[0016] After the planetary gear set is moved downward so as to abut against the guide plate, the clamping mechanism is opened and moved upward relative to the planetary gear set;

[0017] The second telescopic mechanism and the third telescopic mechanism move synchronously to press the planetary gear set onto the ring gear;

[0018] By comparing the actual pressing distance measured by the stroke sensor with the preset pressing distance for the planetary gear set to be pressed into the ring gear, it is determined whether the planetary gear set is pressed into the ring gear.

[0019] A press-fitting method for a planetary gear set according to the present invention further includes:

[0020] Using an upper press-fitting mechanism and a servo turntable to press-fit the sun gear onto a plurality of planetary gears connected to a planetary carrier to form the planetary gear assembly;

[0021] Make the upper pressing mechanism correspondingly located above the lower pressing mechanism.

[0022] According to a press-fitting method of a planetary gear set of the present invention, the sun gear is press-fitted onto a plurality of planetary gears connected to a planetary carrier using an upper press-fitting mechanism and a servo turntable to form the planetary gear assembly, comprising:

[0023] Install the sun gear on the fixing member so that it is fixed in the circumferential direction;

[0024] After the planet carrier with the planetary gears mounted thereon is positioned and mounted on the servo turntable, the second telescopic mechanism is extended to move the fixing member downward;

[0025] 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 rotate under the abutting force of the sun gear until they are flexibly pressed into the sun gear;

[0026] Rotate the planetary gear set at a set angle so that the planetary gear teeth can mesh and press into the ring gear;

[0027] The clamping mechanism clamps the planetary gear set after the planetary gear set rotates a set angle.

[0028] The beneficial effects of the present invention include: 1. The planetary carrier can be clamped and fixed to the telescopic end of the second telescopic mechanism by the clamping mechanism, and the ring gear is fixed by the fixed base below. During press-fitting, the second telescopic mechanism presses down the planetary gear set. After the guide plate receives the planetary gear set, the first telescopic mechanism can drive the opened clamping mechanism to move upward, thereby avoiding interference between the clamping mechanism and the ring gear during press-fitting. The second and third telescopic mechanisms abut against both sides of the planetary gear set and synchronously move the planetary gear set downward to engage the ring gear. The travel sensor detects the downward pressure distance of the planetary gear set to determine whether the planetary gear set is engaged.

[0029] The pressure head of the second telescopic mechanism can be used to abut and press down the planetary gear set. After the planetary gear set is placed on the guide plate, the first telescopic mechanism can drive the clamping mechanism to move upward to avoid interference with the ring gear.

[0030] The travel rod is provided at the telescopic end of the first telescopic mechanism and is fixed relative to the planetary gear set. The travel rod slides to transmit the travel sensor. When pressed downward, the travel sensor detects the movement of the travel rod, i.e., the actual pressing distance. By comparing the actual pressing distance with the preset pressing distance, it can be determined whether the planetary gear set is pressed into the ring gear. If the ring gear is not pressed into the ring gear once, the planetary gear set can be moved upward and pressed into the ring gear a second time.

[0031] Multiple pressing posts can abut against the end surface of the planet gear to avoid tilting when pressing into the ring gear. The mounting plate can be used to easily set multiple pressing posts and avoidance holes, so that the clamping mechanism can slide through the first avoidance hole and clamp the planet carrier;

[0032] The ring gear is fixed to the housing, making it easy to install on a fixed base according to a set orientation. It is suitable for components where the ring gear and the housing are integrally formed. The top and bottom openings of the housing facilitate the removal of the guide plate and the pressing of the planetary gear set.

[0033] The servo turntable can cooperate with the upper pressing mechanism to press the sun gear between multiple planetary gears to form a planetary gear set. The sun gear is fixed circumferentially by the fixing member. When pressing down, the end face of the sun gear touches the end face of the planetary gear, and the servo turntable rotates, driving the planetary gear to rotate to a suitable angle when revolving. The fixing member is slidably arranged at the telescopic end of the second telescopic mechanism, and the elastic member can prevent the sun gear and the planetary gear from being damaged by rigid collision. The sensor can sense the sensed member to determine whether the sun gear is pressed into place.

[0034] After the sun gear is pressed into place, the servo turntable is also used to drive the planetary gear set to rotate the set angle so that it is suitable for meshing with the ring gear;

[0035] The sensor is arranged at the telescopic end of the second telescopic mechanism and moves along with the lifting and lowering. One end of the fixing member is slidably sleeved on the connecting sleeve. After the sun gear abuts the end face of the planetary gear, the fixing member compresses the elastic member and moves upward relative to the sensor. After the sensed member moves upward, the sensor senses the change in state, which can be used to determine whether the sun gear is pressed into place. Moreover, the elastic member can flexibly press the sun gear into place when the circumferential angle of the planetary gear convex teeth is appropriate.

[0036] The press-fitting method of the present invention fully utilizes the structural characteristics of the press-fitting device provided by the present invention. The planetary gear set can be clamped and fixed at the telescopic end of the second telescopic mechanism at a set circumferential angle by the clamping mechanism. After the second telescopic mechanism is extended and the planetary gear set is moved downward to abut against the guide plate, the clamping mechanism is opened and moved upward by the first telescopic mechanism to avoid interference between the clamping mechanism and the ring gear. The second and third telescopic mechanisms move synchronously to press the planetary gear set onto the ring gear. The actual pressing distance is compared with the preset pressing distance to determine whether the delivery gear set is pressed into place.

[0037] The press-fitting method of the present invention can also press-fit the sun gear between multiple planetary gears through a servo turntable in conjunction with a press-fitting mechanism. After the sun gear is press-fitted, it is rotated by a set angle so that the convex tooth angle of the planetary gear is suitable for press-fitting on a fixed gear ring, thereby realizing fully automated press-fitting and improving production efficiency.

[0038] The present invention can clamp the planetary gear set at a set angle at the telescopic end of the second telescopic mechanism through a clamping mechanism. After the second telescopic mechanism presses the planetary gear set downward so that the guide plate receives the planetary gear set, the clamping mechanism opens and is driven to move upward by the first telescopic mechanism to avoid interference between the clamping mechanism and the ring gear during pressing. The second telescopic mechanism and the third telescopic mechanism abut against both sides of the planetary gear set and synchronously move the planetary gear set downward to press the meshing ring gear. The travel sensor detects the downward pressing distance of the planetary gear set to determine whether the planetary gear set is in the ring, thereby realizing machine pressing and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 : A schematic structural diagram of the upper pressing mechanism of the present invention when used in conjunction with the lower pressing mechanism;

[0040] Figure 2 : Schematic diagram of the structure of the downward pressing mechanism;

[0041] Figure 3 : Schematic diagram of the structure when the upper pressing mechanism is used in conjunction with the servo turntable;

[0042] Figure 4 : Schematic diagram of the three-dimensional structure of the upper pressing mechanism;

[0043] Figure 5 : A schematic cross-sectional view of a fixing member slidingly arranged on the second telescopic mechanism;

[0044] Figure 6 : Schematic diagram of the three-dimensional structure of the servo turntable;

[0045] Figure 7 : Schematic diagram of the cross-sectional structure of the servo turntable;

[0046] Among them: 1—clamping mechanism; 2—first telescopic mechanism; 3—second telescopic mechanism; 31—mounting plate; 311—first avoidance hole; 32—pressure column; 33—connecting sleeve; 34—fixing part; 35—elastic component; 36—sensed part; 37—sensor; 4—stroke sensor; 41—stroke rod; 5—planetary gear set; 51—sun gear; 52—planet carrier; 53—planetary gear; 6—downward pressing mechanism; 61—fixed base; 62—third telescopic mechanism; 621—guide plate; 7—housing; 71—ring gear; 8—servo turntable; 81—servo motor; 82—positioning turntable; 821—positioning hole; 83—transmission plate. DETAILED DESCRIPTION

[0047] 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.

[0048] 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.

[0049] 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.

[0050] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] Multiple planetary gears 53 are positioned and installed on the pins of the planetary carrier 52. The central axes of the planetary gears 53 and the sun gear 51 are fixed. The convex tooth angles of multiple planetary gears 53 need to be appropriate to engage and install the sun gear 51. The outer sides of multiple planetary gears 53 engage with the ring gear 71. In some scenarios, the ring gear 71 is fixed on the housing 7 and its convex tooth angles are fixed. After the sun gear 51 is pressed and engaged with multiple planetary gears 53 to form a planetary gear set 5, the planetary gear set 5 also needs to be pressed into the ring gear 71, even if the planetary gears 53 are engaged on the same ring gear 71.

[0052] The present invention relates to a planetary gear set 5 press-fitting device for press-fitting the planetary gear set 5 on the ring gear 71. After adjusting the circumferential angle of the planetary gear set 5, the planetary gear set 5 can be clamped and fixed to the telescopic end of the second telescopic mechanism 3 by the clamping mechanism 1, and the ring gear 71 is fixed by the fixed base 61 below. During press-fitting, the second telescopic mechanism 3 presses down the planetary gear set 5. After the guide plate 621 receives the planetary gear set 5, the first telescopic mechanism 2 can drive the opened clamping mechanism 1 to move upward to avoid interference between the clamping mechanism 1 and the ring gear 71 during press-fitting; the second telescopic mechanism 3 and the third telescopic mechanism 62 abut against both sides of the planetary gear set 5 and synchronously move the planetary gear set 5 downward to press into engagement with the ring gear 71. The travel sensor 4 detects the downward pressing distance of the planetary gear set 5 to determine whether the planetary gear set 5 is in the ring. Automatic press-fitting can be achieved in conjunction with the control system to improve production efficiency.

[0053] A planetary gear set 5 press-fit device, specifically, as Figure 1 As shown, it includes an upper pressing mechanism and a lower pressing mechanism 6; the upper pressing mechanism includes a clamping mechanism 1 for clamping the planetary gear set 5, a first telescopic mechanism 2 for driving the clamping mechanism 1 to rise and fall, a second telescopic mechanism 3 for driving the first telescopic mechanism 2 to rise and fall, and a stroke sensor 4 for detecting the actual downward pressing distance of the planetary gear set 5 to determine whether it is pressed into the ring gear 71; the telescopic end of the second telescopic mechanism 3 abuts the planetary gear set 5 for pressing the planetary gear set 5 downward; the planetary gear set 5 includes a planetary carrier 52, a plurality of planetary gears 53 provided on the planetary carrier 52, and a sun gear 51 meshing with the plurality of planetary gears 53; the lower pressing mechanism 6 includes a fixed base 61 located below the clamping mechanism 1 to fix the ring gear 71 at a set angle when pressing the planetary gear set 5, a third telescopic mechanism 62 with the telescopic end passing through the ring gear 71, and a guide plate 621 provided on the third telescopic mechanism 62 and capable of passing through the ring gear 71. The guide plate 621 is used to receive the planetary gear set 5 and cooperate with the second telescopic mechanism 3 to press the planetary gear set 5 into the ring gear 71.

[0054] During press-fitting, the second telescopic mechanism 3 extends to move the planetary gear set 5 downward to abut the guide plate 621, then the clamping mechanism 1 opens, and the first telescopic mechanism 2 contracts to drive the clamping mechanism 1 to move upward relative to the planetary gear set 5. The second telescopic mechanism 3 continues to extend and cooperates with the third telescopic mechanism 62 to contract to press the planetary gear set 5 into the ring gear 71.

[0055] In a further embodiment, Figure 1 and Figure 4 As shown, the telescopic end of the second telescopic mechanism 3 is provided with a pressure head abutting the planetary gear set 5, which is used to cooperate with the guide plate 621 of the third telescopic mechanism 62 to press the planetary gear set 5 into the ring gear 71 after the clamping mechanism 1 is opened and moved upward.

[0056] In one embodiment, the way in which the travel sensor 4 measures the actual downward movement distance is described as follows: Figure 1 and Figure 4 As shown, the telescopic end of the first telescopic mechanism 2 is provided with a travel rod 41, which slides through a travel sensor 4. The travel sensor 4 measures the actual downward pressure distance of the planetary gear set 5 based on the displacement of the travel rod 41. The actual downward pressure distance is used to compare the planetary gear set 5 with the preset downward pressure distance for pressing the planetary gear set 5 into the ring gear 71 to determine whether the planetary gear set 5 has been pressed into the ring gear 71. The travel rod 41 is provided at the telescopic end of the first telescopic mechanism 2 and is fixed relative to the planetary gear set 5. It slides and transmits the travel sensor 4. When pressed downward, the travel sensor 4 detects the movement of the travel rod 41, that is, the actual downward pressure distance. By comparing the actual downward pressure distance with the preset downward pressure distance, it can be determined whether the planetary gear set 5 has been pressed into the ring gear 71. If the ring gear 71 is not pressed into the first time, the planetary gear set 53 can be moved upward and pressed into the ring gear 71 a second time.

[0057] In one embodiment, if Figure 1 As shown, the telescopic end of the second telescopic mechanism 3 is provided with a mounting plate 31; the pressure head includes a plurality of pressure columns 32 spaced apart on the mounting plate 31 and corresponding to the end faces of the planetary gear 53; a first avoidance hole 311 is penetrated by the mounting plate 31, and the clamping mechanism 1 slides vertically through the first avoidance hole 311; the fixed end (opposite to the telescopic end) of the first telescopic mechanism 2 is provided on the mounting plate 31, and the telescopic end is connected to the clamping mechanism 1. After the planetary gear set 5 moves down and abuts the guide plate 621, the clamping mechanism 1 opens, and the first telescopic mechanism 2 contracts to drive the clamping mechanism 1 to slide upward in the first avoidance hole 311, so as to avoid interference between the clamping mechanism 1 and the ring gear 71 during press-fitting.

[0058] In one embodiment, if Figure 1-2 As shown, the ring gear 71 is fixed on the shell 7, and the shell 7 is fixed on the fixed base 61 according to the set orientation. The top of the shell 7 is open, and the bottom is provided with a second avoidance hole for the guide plate 621 to pass through; the third telescopic mechanism 62 is provided on the fixed base 61 and is located below the shell 7. The ring gear 71 is easily fixed through the shell 7 to ensure the consistency of the orientation of the ring gear 71 during each press-fit. It is suitable for a planetary gearbox in which the ring gear 71 and the shell 7 are integrally formed.

[0059] In certain embodiments, as Figure 3As shown, the pressing device of the present invention also includes a servo turntable 8, which is located below the upper pressing mechanism when the sun gear 51 and the planetary gears 53 are pressed to form the planetary gear set 5. The servo turntable 8 is used to install and rotate the planetary carrier 52 provided with multiple planetary gears 53; the telescopic end of the second telescopic mechanism 3 is slidably provided with a fixing part 34 for installing the sun gear 51, and an elastic part 35 is provided between the fixing part 34; the telescopic end of the second telescopic mechanism 3 is fixed with a sensor 37; a sensed part 36 is provided on the fixing part 34 corresponding to the sensor 37, and before the sun gear 51 is pressed, the sensor 37 can sense the sensed part 36; when the second telescopic mechanism 3 is extended, the fixing part 34 slides and compresses the elastic part 35 relative to the sensor 37 when the end face of the sun gear 51 abuts against the end face of the planetary gear 53, and the sensed part 36 is located outside the sensing range of the sensor 37 after following the fixing part 34 to slide relative to the sensor 37.

[0060] In a further embodiment, the servo turntable 8 is described as follows. Figure 6-7 As shown, the servo turntable 8 includes a servo motor 81 and a positioning turntable 82 that is transmission-connected to the output end of the servo motor 81. The positioning turntable 82 is provided with a positioning hole 821 for plugging in the output shaft of the planetary carrier 52. The servo motor 81 drives the positioning turntable 82 to rotate, thereby driving the planetary carrier 52 to rotate. The servo motor 81 can drive the positioning turntable 82 to rotate through the transmission disk 83.

[0061] In a further embodiment, the sun gear 51 is sleeved on the fixing member 34 with an interference fit, and the friction between the two fixes the sun gear 51 circumferentially; when the end face of the sun gear 51 abuts the end face of the planet gear 53, the servo turntable 8 drives the planet carrier 52 to rotate, so that the planet gear 53 rotates to an angle suitable for press-fitting into the sun gear 51 under the abutment force of the end face of the sun gear 51; after the multiple planet gears 53 rotate, they will find an angle suitable for press-fitting into the sun gear 51; in order to make the press-fitted planetary gear set 5 suitable for press-fitting on the ring gear 71, the servo turntable 8 rotates a set angle (the setting angle) after the sun gear 51 is pressed between the planet gears 53. The first set angle is measured through experiments and used in the subsequent press-fitting of the planetary gear set 5) so that the convex tooth angle of the planetary gear 53 is suitable for meshing with the fixed ring gear 71 (in the first set circumferential angle state); the planetary gear set 5 is then clamped and fixed by the clamping mechanism 1, and the upper press-fitting mechanism is moved using the servo platform so that the upper press-fitting mechanism is correspondingly located on the lower press-fitting mechanism 6. The planetary gear set 5 (planetary gear 53) is then press-fitted and meshed on the ring gear 71. The second telescopic mechanism 3 then drives the sun gear 51 to rise, and the next set of planetary gears 53 is press-fitted on the next set of ring gears 71. The same sun gear 51 is used throughout the entire press-fitting process.

[0062] In a specific embodiment, the fixing member 34 is slidably connected to the second telescopic mechanism 3, as shown in FIG. Figure 5As shown, the telescopic end of the second telescopic mechanism 3 is fixedly provided with the first telescopic mechanism 2, the sensor 37, and the connecting sleeve 33 located on one side of the sensor 37. One end of the fixing member 34 slides within the connecting sleeve 33, and the other end is used to circumferentially fix the sun gear 51. The two ends of the elastic member 35 act on the connecting sleeve 33 and the fixing member 34 to abut the fixing member 34 to flexibly press the sun gear 51. The telescopic end of the first telescopic mechanism 2 is provided with a clamping mechanism 1; the clamping plates of the clamping mechanism 1 are located on both sides of the fixing member 34. Preferably, a spring is used as the elastic member 35, which is disposed within the connecting sleeve 33, with the top and bottom ends respectively abutting the connecting sleeve 33 and the fixing member 34.

[0063] In another embodiment, the sun gear 51 is mounted on the fixing member 34 at a second set circumferential angle, so that the planetary gears 53 can be adapted to mesh with the ring gear 71 directly after engaging the sun gear 51, or after the planetary gears 53 have orbited the set angle. In this way, after each press-fitting of the planetary gear set 5 onto the ring gear 71, the sun gear 51 does not need to be lifted and removed from between the planetary gears 53, thereby eliminating the need to press-fit the sun gear 51 between the planetary gears 53 that mesh with the ring gear 71.

[0064] The first telescopic mechanism 2 , the second telescopic mechanism 3 , and the third telescopic mechanism 62 may all adopt telescopic cylinders, such as hydraulic cylinders and pneumatic cylinders.

[0065] In actual use, the telescopic end of the second telescopic mechanism 3 is fixed with a mounting plate 31, a connecting sleeve 33 is fixed on the mounting plate 31, a fixing member 34 is columnar, and the top end is slidably sleeved in the connecting sleeve 33, a spring is arranged in the connecting sleeve 33, and the two ends respectively abut the fixing member 34 and the connecting sleeve 33, a sensor 37 is arranged on the mounting plate 31 and is located on the side of the sensed member 36, the fixed end of the first telescopic mechanism 2 is arranged on the top surface of the mounting plate 31, and the clamping plate of the telescopic end fixedly connected to the clamping mechanism 1 slides through the first avoidance hole 311 of the mounting plate 31; the mounting plate 31 is fixedly connected through the travel sensor The stroke rod 41 of the device 4 and the stroke sensor 4 are fixedly arranged; when press-fitting the sun gear 51, the servo turntable 8 is located under the upper press-fitting mechanism. After the press-fitting is completed to form the planetary gear set 5, the servo turntable 8 is rotated at a set angle so that the convex teeth of the planetary gear 53 are suitable for the ring gear 71 with a fixed meshing angle, and the clamping mechanism 1 clamps and fixes the planetary gear set 5 with the adjusted angle; then the lower press-fitting mechanism 6 is located under the upper press-fitting mechanism to press-fit the planetary gear set 5 on the ring gear 71. The servo platform can be used to move the upper press-fitting mechanism to correspond to the servo turntable 8 and the lower press-fitting mechanism 6 in sequence to complete the two press-fitting processes.

[0066] Another aspect of the present invention further provides a press-fitting method for a planetary gear set 5, using the press-fitting device for a planetary gear set 5 of the present invention. The press-fitting method includes:

[0067] S1. Install the planetary gear set 5 at the telescopic end of the second telescopic mechanism 3 at a first set circumferential angle, and use the clamping mechanism 1 to clamp and fix the planetary gear set 5;

[0068] S2, after the planetary gear set 5 is moved downward to abut against the guide plate 621, the clamping mechanism 1 is opened and moved upward relative to the planetary gear set 5;

[0069] S3, the second telescopic mechanism 3 and the third telescopic mechanism 62 move synchronously to press the planetary gear set 5 onto the ring gear 71;

[0070] S4. Determine whether the planetary gear set 5 is pressed into the ring gear 71 by comparing the actual pressing distance measured by the stroke sensor 4 with the preset pressing distance for the planetary gear set 5 to be pressed into the ring gear 71.

[0071] According to the present invention, a press-fitting method for a planetary gear set 5 is provided, further comprising:

[0072] S100: Use the upper press-fitting mechanism and the servo turntable 8 to press-fit the sun gear 51 onto the plurality of planetary gears 53 connected to the planetary carrier 52 to form the planetary gear set 5. That is, the present invention includes two press-fitting steps: the first press-fitting step is to press-fit the sun gear 51 between the planetary gears 53 to form the planetary gear set 5, and the second press-fitting step is to press-fit the planetary gear set 5 onto the ring gear 71.

[0073] S200: The upper press-fitting mechanism is positioned above the lower press-fitting mechanism 6; the planetary gear set 5 is then press-fitted and meshed with the ring gear 71. The upper press-fitting mechanism can be mounted on a servo platform. After the sun gear 51 is press-fitted between the plurality of planetary gears 53 to form the planetary gear set 5, the servo platform is used to adjust the position of the upper press-fitting mechanism so that it corresponds to the position above the lower press-fitting mechanism 6. The upper press-fitting mechanism can be translated or rotated to finally position the planetary gear set 5 at the first set circumferential angle and then continue press-fitting.

[0074] According to the present invention, a press-fitting method for a planetary gear set 5 is provided. In the above step S100, the sun gear 51 is press-fitted onto a plurality of planetary gears 53 connected to a planet carrier 52 using an upper press-fitting mechanism and a servo turntable 8 to form a planetary gear set 5, including:

[0075] S101, installing the sun gear 51 on the fixing member 34 so that it is fixed in the circumferential direction;

[0076] S102. After the planet carrier 52 with the planetary gears 53 mounted thereon is positioned and mounted on the servo turntable 8, the second telescopic mechanism 3 is extended to move the fixing member 34 downward. In most cases, the sun gear 51 cannot be directly pressed downward to engage the multiple planetary gears 53, and the convex tooth angles of the multiple planetary gears 53 need to be adjusted. During the downward pressing process, the bottom surface of the sun gear 51 will abut the top surface of the planetary gears 53. As the downward pressing continues, the sensor 37 moves relative to the fixing member 34, causing the sensing state of the sensor 37 to change, thereby determining that the sun gear 51 is not pressed between the planetary gears 53.

[0077] S103. When the end face of the sun gear 51 abuts against the end faces of the multiple planetary gears 53, the planet carrier 52 is rotated so that the planetary gears 53 rotate under the abutment force of the sun gear 51 until they are flexibly pressed into the sun gear 51. The planet carrier 52 is rotated by the servo turntable 8, driving the planetary gears 53 to rotate while revolving, and they rotate to an angle that engages with the sun gear 51. Under the elastic force of the elastic component 35, the sun gear 51 is flexibly pressed down to engage with the multiple planetary gears 53 to form the planetary gear set 5. At this time, the sensed component 36 slides along with the fixed component 34 and is located on the side of the sensor 37. The sensor 37 changes from a non-sensing state to a sensing state, which indicates that the sun gear 51 is pressed into place.

[0078] S104. Rotate the planetary gear set 5 at a set angle so that the protruding teeth of the planetary gears 53 are suitable for meshing and pressing into the ring gear 71. Since the ring gear 71 is fixed, the planetary gear set 5 needs to be adjusted to an angle suitable for meshing with the ring gear 71 and pressed downward, that is, pressed downward when it is at a first preset circumferential angle. In this step, the servo turntable 8 is used to rotate the planet carrier 52 to adjust the circumferential orientation of the planetary gear set 5.

[0079] S105 , the clamping mechanism 1 clamps the planetary gear set 5 after the planetary gear set 5 rotates a set angle, so as to facilitate the subsequent transfer of the upper pressing mechanism 6 so as to be located above the lower pressing mechanism 6 .

[0080] During the actual press-fitting, the sun gear 51 is plugged into the fixing part 34. The initial state of the sensor 37 corresponds to being located on one side of the sensor 37 and can be sensed. The second telescopic mechanism 3 is extended to press the sun gear 51 downward. When the bottom surface of the sun gear 51 abuts the top surface of the planetary gear 53, the fixing part 34 is pushed to slide in the connecting sleeve 33, so that the sensing part 36 moves up to outside the sensing range of the sensor 37. The sensing state of the sensor 37 is a non-sensing state, and it is judged that the sun gear 51 is not pressed into place; the servo turntable 8 is used to drive the planetary carrier 52 to rotate. Under the abutment force of the sun gear 51, the planetary gear 53 rotates to an angle suitable for pressing into the sun gear 51; under the thrust of the elastic component 35, the fixing part 34 is in the connecting sleeve The sun gear 51 is flexibly pressed into the cylinder 33 by sliding down. The sensed part 36 follows the fixed part 34 downward, and the sensing state of the sensor 37 becomes the sensed state, so it can be judged that the sun gear 51 is pressed into place; the servo turntable 8 drives the planetary carrier 52 to rotate the set angle so that the circumferential angle of the planetary gear set 5 is suitable for pressing on the ring gear 71; the clamping mechanism 1 clamps and fixes the planetary gear set 5, and the servo platform translates the upper pressing mechanism to correspond to the lower pressing mechanism 6. After the planetary gear set 5 is pressed down to abut against the guide disk 621, the clamping mechanism 1 opens and is driven to move upward by the first telescopic mechanism 2, the second telescopic mechanism 3 extends, and the third telescopic mechanism 62 contracts synchronously to press the planetary gear set 5 into engagement with the ring gear 71.

[0081] 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 press-fitting device, characterized in that: include, An upper press-fitting mechanism includes a clamping mechanism for clamping the planetary gear set, a first telescopic mechanism for driving the clamping mechanism to rise and fall, a second telescopic mechanism for driving the first telescopic mechanism to rise and fall, and a travel sensor for detecting the actual downward pressure distance of the planetary gear set to determine whether the ring gear is pressed into place; the telescopic end of the second telescopic mechanism abuts the planetary gear set; the planetary gear set includes a planet carrier, a plurality of planetary gears disposed on the planet carrier, and a sun gear meshing with the plurality of planetary gears; a lower press-fitting mechanism, the lower press-fitting mechanism comprising a fixed base for fixing the ring gear, a third telescopic mechanism with a telescopic end passing through the ring gear, and a guide plate provided on the third telescopic mechanism and capable of passing through the ring gear, the guide plate being used to receive the planetary gear set and cooperate with the second telescopic mechanism to press-fit the planetary gear set into the ring gear; And a servo turntable located below the upper pressing mechanism when the sun gear and the planetary gears are pressed to form the planetary gear set, the servo turntable is used to install and rotate the planetary carrier with multiple planetary gears; the telescopic end of the second telescopic mechanism is slidably provided with a fixing part for installing the sun gear, and an elastic part is provided between the fixing part; the telescopic end of the second telescopic mechanism is fixed with a sensor; a sensed part is provided on the fixing part corresponding to the sensor; the fixing part slides relative to the sensor when the end face of the sun gear abuts the end face of the planetary gear, and the sensed part is outside the sensing range of the sensor after following the fixed part to slide relative to the sensor; when the sun gear engages with multiple planetary gears, the sensed part follows the fixed part to slide and is located on the corresponding side of the sensor, and the sensor changes from a non-sensing state to a sensing state.

2. A planetary gear set press-fitting device according to claim 1, characterized in that: The telescopic end of the second telescopic mechanism is provided with a pressing head abutting the planetary gear set, which is used to cooperate with the guide plate of the third telescopic mechanism to press the planetary gear set into the gear ring after the clamping mechanism is opened and moved upward.

3. A planetary gear set press-fitting device according to claim 2, characterized in that: A travel rod is provided at the telescopic end of the first telescopic mechanism, and the travel rod slides and penetrates the travel sensor; the travel sensor measures the actual downward pressing distance of the planetary gear set according to the displacement of the travel rod, and the actual downward pressing distance is used to compare the preset downward pressing distance of the planetary gear set pressed into the ring gear to determine whether the planetary gear set is pressed into the ring gear.

4. A planetary gear set press-fitting device according to claim 3, characterized in that: The telescopic end of the second telescopic mechanism is provided with a mounting plate; the pressure head includes a plurality of pressure columns spaced apart on the mounting plate corresponding to the end faces of the planetary gears; a first avoidance hole is penetrated through the mounting plate, and the clamping mechanism slides vertically through the first avoidance hole.

5. A planetary gear set press-fitting device according to any one of claims 1 to 4, characterized in that: The gear ring is fixed on the shell, and the shell is fixed on the fixed base according to the set orientation. The top of the shell is open, and the bottom is provided with a second avoidance hole for the guide plate to pass through.

6. A planetary gear set press-fitting device according to claim 1, characterized in that: When the end face of the sun gear abuts against the end face of the planet gear, the servo turntable drives the planet carrier to rotate so that the planet gear rotates to an angle suitable for being pressed into the sun gear under the abutment force of the sun gear end face; after the sun gear is pressed into between the planet gears, the servo turntable rotates at a set angle so that the convex teeth of the planet gear are suitable for engaging with the ring gear with a fixed meshing angle.

7. A planetary gear set press-fitting device according to claim 6, characterized in that: The telescopic end of the second telescopic mechanism is fixed with the first telescopic mechanism, the sensor and the connecting sleeve located on one side of the sensor, one end of the fixing part is slidably arranged in the connecting sleeve, and the two ends of the elastic component act on the connecting sleeve and the fixing part to abut the fixing part to flexibly press the sun gear; the telescopic end of the first telescopic mechanism is provided with the clamping mechanism.

8. A press-fitting method for a planetary gear set, characterized in that: Using any planetary gear set press-fitting device as claimed in any one of claims 1 to 7, the press-fitting method includes: The planetary gear set is mounted on the telescopic end of the second telescopic mechanism at a first set circumferential angle, and the clamping mechanism clamps and fixes the planetary gear set; After the planetary gear set is moved downward so as to abut against the guide plate, the clamping mechanism is opened and moved upward relative to the planetary gear set; The second telescopic mechanism and the third telescopic mechanism move synchronously to press the planetary gear set onto the ring gear; By comparing the actual pressing distance measured by the stroke sensor with the preset pressing distance for the planetary gear set to be pressed into the ring gear, it is determined whether the planetary gear set is pressed into the ring gear.

9. A press-fitting method for a planetary gear set according to claim 8, characterized in that: The method further includes: using an upper press-fitting mechanism and a servo turntable to press-fit the sun gear onto a plurality of planetary gears connected to a planetary carrier to form the planetary gear set; Make the upper pressing mechanism correspondingly located above the lower pressing mechanism.

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