Shafting alignment method for high speed planetary gear transmission

Abstract

The application relates to a shafting centering method of a high-speed planetary gear transmission device, and relates to a manufacturing and installation method of the high-speed planetary gear transmission device, and aims to solve the problems of low centering efficiency and difficulty in centering of the existing high-speed planetary gear transmission device. The application realizes centering of bearing holes of the whole device through box combination, hole boring, stop positioning and hinge positioning pin hole arrangement; the centering and detection problems of large-size and non-easy-to-detect combination transmission parts are solved by means of a false shaft support; the precision of shafting centering is improved through tip positioning of a floating gear ring and an inner gear ring, and meanwhile, the influence of output shaft system rotation frequency on the sun wheel shaft vibration and the box vibration is effectively inhibited; the precision of centering of the high-speed planetary gear transmission device is improved by means of a tool bearing bush, and the same coaxiality value of the same detection point before and after assembly can be compared to quickly lock the link with larger centering deviation, so that the efficiency and precision of centering are improved.

Description

Technical Field

[0001] This invention relates to a method for manufacturing and installing a high-speed planetary gear transmission device. Background Technology

[0002] Compared with ordinary gear transmissions, planetary gear transmissions have many unique advantages. They can perform power splitting during transmission, have a high load-bearing capacity, smooth operation, and strong resistance to impact and vibration. Furthermore, the input and output shafts of planetary gear transmissions are coaxial, meaning they are on the same axis, resulting in a compact structure, small size, and light weight. Planetary gear transmissions have been widely used. However, their complex structure and difficult manufacturing and installation make them challenging. Improper manufacturing processes and installation methods can easily lead to misalignment of the shaft system, resulting in excessive shaft vibration and housing vibration. The output shaft's rotational frequency is present in the sun gear shaft vibration spectrum. Therefore, there is an urgent need to improve the manufacturing process and installation and commissioning procedures of planetary gear transmissions, and optimize shaft alignment methods. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of low alignment efficiency and difficulty in alignment of existing high-speed planetary gear transmission devices, and to propose a shaft alignment method for high-speed planetary gear transmission devices.

[0004] The present invention discloses a shaft alignment method for a high-speed planetary gear transmission device. This alignment method is for the shaft system of the high-speed planetary gear transmission device, which includes a housing, a planet carrier, an output assembly, an internal gear ring, planet gears, a sun gear, and bearings.

[0005] The housing includes a lower housing, an upper housing, a planetary carrier upright plate, a lower front cover, and an upper front cover; wherein, the lower housing and the upper housing form a first ring structure, and the upper housing is disposed on the lower housing, and the planetary carrier upright plate is disposed on the left side of the first ring structure; the lower front cover and the upper front cover form a second ring structure, and the lower front cover is disposed on the lower part of the upper front cover; the second ring structure is fixed to the left side wall of the planetary carrier upright plate;

[0006] The output assembly includes an output shaft, a connecting plate, and a floating gear ring. The left end of the output shaft is located within the first annular structure and is coaxially mounted with the right end of the sun gear via a second tooling bearing. The left end of the sun gear extends from the left side of the second annular structure along the planetary carrier plate and is connected to the second annular structure via the first tooling bearing. The left end of the sun gear also serves as the input end of the transmission device. The right end of the output shaft is connected to the edge of the first annular structure via a third tooling bearing, and also serves as the output end of the transmission device.

[0007] The planetary gear includes a first planetary gear, a second planetary gear, and a third planetary gear; one side of the first planetary gear, one side of the second planetary gear, and one side of the third planetary gear are respectively engaged with the sun gear;

[0008] The bearing consists of three bearings, which are respectively located at the axis of the first planetary gear, the axis of the second planetary gear, and the axis of the third planetary gear.

[0009] The planetary carrier is disposed within the first ring structure; the other side of the first planetary gear, the other side of the second planetary gear, and the other side of the first planetary gear respectively mesh with the inner side of the internal gear ring;

[0010] The floating gear ring is fixed to the outside of the inner gear ring, and the inner gear ring is on the left and the inner gear ring is on the right.

[0011] The adjustment method includes the following steps:

[0012] Adjust the bearing holes on the housing;

[0013] Center the output shaft assembly;

[0014] Adjust the dimensional and geometric tolerances of the transmission components;

[0015] After assembling the lower housing, planetary carrier upright plate, lower front cover, planetary carrier, output shaft assembly, internal gear ring, planetary gears, sun gear, first tooling bearing, second tooling bearing, and third tooling bearing respectively, the coaxiality of the sun gear's rolling band J4 relative to reference U1-X2 is j4, the coaxiality of the left outer circular surface G3 of the internal gear ring relative to reference U1-X2 is g3, the coaxiality of the floating gear ring's outer circular surface E3 relative to reference U1-X2 is e3, the coaxiality of the connecting plate's outer circular surface D5 relative to reference U1-X2 is d5, and the coaxiality of the output shaft's rolling band C5 relative to reference U1-X2 is c5; thus completing the alignment of the shaft system of this high-speed planetary gear transmission device.

[0016] Among them, j4, g3, e3, d5 and c5 are all set values.

[0017] Furthermore, the specific method for adjusting the bearing holes on the housing is as follows:

[0018] After assembling the lower housing, upper housing, planetary carrier upright plate, lower front cover, and upper front cover into a housing, machine bearing hole A1 on the left side of the housing and bearing hole A2 on the right side of the housing, and adjust the coaxiality of bearing hole A1 and bearing hole A2. Using hole A3 on the planetary carrier upright plate as the conversion reference, adjust the coaxiality of bearing hole B1 of the planetary carrier and bearing hole A1 of the housing by centering through stop fine adjustment and positioning with hinge pin hole.

[0019] Furthermore, the axis of bearing hole A1 is reference Z1; the coaxiality of bearing hole A2 relative to reference Z1 is a2; after the planetary carrier plate, the lower front cover, and the upper front cover are assembled, the coaxiality of bearing hole A3 relative to reference Z1 is a3, the coaxiality of bearing hole A4 relative to reference Z1 is a4, and the end face runout of bearing hole A5 relative to reference Z1 is a5; the planetary carrier plate is provided with pre-machined pin hole A6', and the positional accuracy of A6' relative to reference Z2 is a6; the planetary carrier is machined with bearing hole B1, planetary bearing hole B3, outer cylindrical surface B4, end face B5, and pre-machined pin hole B2. The axis of bearing hole B1 is reference Y1; the positional tolerance of planetary bearing hole B3 relative to reference Y1 is b3, the coaxiality of outer cylindrical surface B4 relative to reference Y1 is b4, the positional tolerance of pin hole B2' relative to reference Y1 is b2, and the end face runout of end face B5 relative to reference Y1 is b5; after the planetary carrier upright plate is assembled with the planetary carrier, the axis of bearing hole A3 is reference Z2; the coaxiality of bearing hole B1 relative to reference Z2 is b1, and it is equipped with 3 hinge pin holes A6 and 3 B2; after the housing is assembled with the planetary carrier, the coaxiality of bearing hole B1 relative to references Z1-Z3 is b1.

[0020] Among them, a2, a3, a4, a5, a6, b1, b2, b3, b4, and b5 are all set values, the number of pin holes A6' is 3, the number of planetary bearing holes B3 is 3, and the number of pin holes B2' is 3.

[0021] Furthermore, the specific method for centering the output shaft assembly is as follows:

[0022] Adjust the dimensional and geometric tolerances of the output shaft, connecting plate, and floating gear ring respectively, and set a dummy shaft at the left end of the output shaft, and adjust the dimensional and geometric tolerances of the dummy shaft; when assembling the output shaft and connecting plate, the coaxiality of D5 relative to the reference X1-X2 is d5; then complete the positioning by fitting the reamer pin hole D2 and pin hole C3; assemble the output shaft, connecting plate, floating gear ring, dummy shaft, and positioning pin used to fix the connecting plate and output shaft together, adjust the relative position of the connecting plate and floating gear ring so that the coaxiality of E3 relative to X2-X6 reaches e3, and the coaxiality of C5 relative to X2-X6 reaches c5, and then fit the reamer pin hole E2 and pin hole D3;

[0023] Among them, there are 8 pin holes D2; 8 pin holes C3; 12 pin holes E2; and 12 pin holes D3.

[0024] Furthermore, the output shaft is machined with an outer circle C1, an outer stop C2, a pre-machined pin hole C3', an outer circle C4, a rolled band C5, a center hole C6, and a center hole C7; the center hole C7 is reference X1, and the center hole C6 is reference X2; the coaxiality of the outer circle C1 relative to X1-X2 is c1, the coaxiality of the outer stop C2 relative to X1-X2 is c2, the positional accuracy of the pre-machined pin hole C3' relative to X1-X2 is c3, the coaxiality of the outer circle C4 relative to X1-X2 is c4, and the coaxiality of the rolled band C5 relative to reference X1-X2 is c5; the connecting plate is machined with an inner stop D1, a pre-machined pin hole D2', a pre-machined pin hole D3', an outer stop D4, an outer circle D5, and a stop end face D6; the axis of the inner stop D1 is reference X3; the pre-machined pin hole D2' relative to... The positional tolerance of X3 is d2, and the positional tolerance of the pre-machined pin hole D3' relative to the datum X3 is d3; the coaxiality of the outer stop D4 relative to X3 is d4, the coaxiality of the outer circle D5 relative to the datum X3 is d5, and the runout of the stop end face D6 relative to the end face of X3 is d6; the floating gear ring is machined with an inner stop E1, a pre-machined pin hole E2', an outer circle E3, a tooth root circle E4, and an end face E5; the axis of the inner stop E1 is the datum X4; the positional tolerance of the pre-machined pin hole E2' relative to X4 is e2, the coaxiality of the outer circle E3 relative to X4 is e3, the positional tolerance of the tooth root circle E4 relative to X4 is e4, and the runout of the end face E5 relative to X4 is e5; the dummy shaft is machined with an inner hole F1 and an outer circle F2; the axis of the inner hole F1 is the datum X5; the coaxiality of the outer circle F2 relative to X5 is f2.

[0025] Among them, c1, c2, c3, c4, d2, d3, d4, d6, e2, e4, e5 and f2 are all set values; the number of pre-machined pin holes C3' is 8, the number of pre-machined pin holes D3" is 12, and the number of pre-machined pin holes E2' is 12.

[0026] Furthermore, the specific methods for adjusting the dimensional tolerances and geometric tolerances of the transmission components are as follows:

[0027] Adjust the difference between the root circle E4 of the floating gear ring and the tip circle G1 of the left external tooth of the internal gear ring and the tip circle G4 of the right external tooth of the internal gear ring to be between 0.1mm and 0.15mm, i.e., 0.1≤E4-G1≤0.15, 0.1≤E4-G2≤0.15; so that the bearing hole A1, bearing hole A2, bearing hole B1, tooling bearing inner hole K1, tooling bearing inner hole K3, tooling bearing inner hole K5, tooling bearing outer diameter K2, and tooling... The following relationships exist between the outer diameter of the bearing bush K4, the outer diameter of the tooling bearing bush K6, the outer diameter of the sun gear J3, the outer diameter of the output shaft C1, and the outer diameter of the output shaft C4: -0.02≤K2-A1≤0.02, 0.06≤K1-J3≤0.08; -0.02≤K4-B1≤0.02, 0.06≤K3-C1≤0.08; -0.02≤K6-A2≤0.02, 0.06≤K5-C4≤0.08.

[0028] Furthermore, the left side of the internal gear ring (401) is machined with an external tooth tip circle G1, an internal tooth tip circle G2, and an outer cylindrical surface G3; the right side of the internal gear ring is machined with an external tooth tip circle G4, an internal tooth tip circle G5, and an outer cylindrical surface G6. The axis of the external tooth tip circle G1 is reference W1, and the axis of the external tooth tip circle G4 is reference W2. The coaxiality of the internal tooth tip circle G2 relative to reference W1 is g2, the coaxiality of the outer cylindrical surface G3 relative to reference W1 is g3, the coaxiality of the internal tooth tip circle G5 relative to reference W1 is g5, and the coaxiality of the outer cylindrical surface G6 relative to reference W2 is g6. The first planetary gear, the second planetary gear, and the third planetary gear are respectively machined with bearing mounting holes H1 and tip circles H2. The axis of the bearing mounting hole H1 is reference V1; the coaxiality of the tip circle H2 relative to V1 is h2. The axle is machined with center hole J1, center hole J2, outer circle J3, and rolling band J4; center hole J1 is reference U1, and center hole J2 is reference U2; the coaxiality of outer circle J3 relative to U1-U2 is j3, and the coaxiality of rolling band J4 relative to U1-U2 is j4; the first tooling bearing is machined with inner hole K1 and outer circle K2, the second tooling bearing is machined with inner hole K3 and outer circle K4, and the third tooling bearing is machined with inner hole K5 and outer circle K6; the axis of inner hole K1 is reference T1, the axis of inner hole K3 is reference T2, and the axis of inner hole K5 is reference T3; the coaxiality of outer circle K2 relative to reference T1 is k2, the coaxiality of outer circle K4 relative to reference T2 is k4, and the coaxiality of outer circle K6 relative to reference T3 is k6;

[0029] Among them, g2, g4, g5, g6, h2, j3, j4, k2, k4, and k6 are all set values.

[0030] The beneficial effects of this invention are:

[0031] 1. This invention, by boring the housing after assembly, more easily ensures the coaxiality of the bearing holes. The alignment of the bearing holes throughout the device is achieved through locating with a stop and fitting with a locating pin.

[0032] 2. This invention ensures the alignment of large-sized assembled transmission components by using a stop for initial positioning, followed by fine-tuning to find the center and then fitting the locating pin hole. In this process, the dummy shaft support solves the problems of centering and inspecting large, difficult-to-measure parts.

[0033] 3. This invention improves the accuracy of shaft alignment by positioning the top of the floating gear ring and the internal gear ring, and also effectively suppresses the influence of the output shaft frequency on the vibration of the sun gear shaft and the housing.

[0034] 4. This invention improves the centering accuracy of high-speed planetary gear transmission devices by using tooling bearing bushes, and can identify links with large centering deviations by comparing the coaxiality values ​​of the same detection point before and after assembly, thereby improving the efficiency and accuracy of centering. Attached Figure Description

[0035] Figure 1 This is a front view of the high-speed planetary gear transmission device in Specific Implementation Method 1;

[0036] Figure 2 This is a longitudinal cross-sectional schematic diagram of the high-speed planetary gear transmission device in Specific Implementation Method 1.

[0037] Figure 3 This is a diagram of the boring hole in the housing according to specific implementation method one;

[0038] Figure 4 This is a front view of the planetary support plate in the first specific implementation method;

[0039] Figure 5 This is a diagram of the pin holes on the planetary carrier support plate in Specific Implementation Method 1;

[0040] Figure 6 This is a diagram of the planetary carrier bearing bore in Specific Implementation Method 1;

[0041] Figure 7 This is a schematic diagram of planetary carrier centering in Specific Implementation Method 1;

[0042] Figure 8 This is a schematic diagram of the output shaft alignment in the first specific implementation method;

[0043] Figure 9 This is a schematic diagram of the centering of the connecting plate in the first specific implementation method;

[0044] Figure 10 This is a schematic diagram of the centering of the floating gear ring in the first specific implementation method;

[0045] Figure 11 This is a schematic diagram of finding the center of the dummy shaft in the first specific implementation method;

[0046] Figure 12This is a schematic diagram showing the alignment of the connecting plate to the output shaft in the first specific implementation method;

[0047] Figure 13 This is a schematic diagram of the centering of the output component in Specific Implementation Method 1;

[0048] Figure 14 This is a schematic diagram of centering the internal gear ring in the first specific implementation method;

[0049] Figure 15 This is a schematic diagram of the planetary gear centering process in Implementation Method 1.

[0050] Figure 16 This is a schematic diagram of the centering of the sun gear in the first specific implementation method;

[0051] Figure 17 This is a schematic diagram of the centering of the tooling bearing in Specific Implementation Method 1;

[0052] Figure 18 This is a schematic diagram of the overall centering of the shaft system of the high-speed planetary gear transmission device in Specific Implementation Method 1.

[0053] In the diagram: 1 is the housing, 2 is the planetary carrier, 3 is the output component, 4 is the internal gear ring, 5 is the planetary gear, 6 is the sun gear, 7 is the bearing, 101 is the lower housing, 102 is the upper housing, 103 is the planetary carrier stand plate, 104 is the lower front cover, 105 is the upper front cover, 301 is the output shaft, 302 is the connecting plate, 303 is the floating gear ring, 304 is the dummy shaft, 305 is the locating pin, 401 is the left internal gear ring, 402 is the right internal gear ring, 501 is the first planetary gear, 502 is the second planetary gear, and 503 is the third planetary gear.

[0054] Bearing hole A1, bearing hole A2, hole A3, inner stop A4, stop end face A5, pre-machined pin holes A6' (3), reamed pin holes A6' (3), bearing hole B1, planetary bearing hole B3' (3), outer cylindrical surface B4, end face B5, pre-machined pin holes B2' (3), reamed pin holes B2' (3), outer circle C1, outer stop C2, pre-machined pin holes C3' (8), reamed pin holes C3' (8), outer circle C4, rolled strip C5, center hole C6, center hole C7, inner stop D1, pre-machined pin holes D2' (8), mating pin hole D2' (8) 12 pre-machined pin holes D3', 12 reamed pin holes D3', 12 outer stop D4, outer circle D5, stop end face D6, inner stop E1, 12 pre-machined pin holes E2', 12 reamed pin holes E2', outer circle E3, tooth root circle E4, end face E5, inner hole F1, outer circle F2, outer tooth tip circle G1, inner tooth tip circle G2, outer circle surface G3, outer tooth tip circle G4, inner tooth tip circle G5, outer circle surface G6, bearing mounting hole H1, tooth tip circle H2, center hole J1, center hole J2, outer circle J3, rolling band J4.

[0055] Reference Z1 is the axis of hole A1, reference Z2 is the axis of hole A3, reference Z2 is the axis of hole A2, reference Y1 is the axis of hole B1, reference X1 is the center C7, reference X2 is the center hole C6, reference X3 is the axis of hole D1, reference X4 is the axis of hole E1, reference X5 is the axis of hole F1, reference X6 is the axis of outer circle F2, reference W1 is the axis of external tooth tip circle C1, reference W2 is the axis of external tooth tip circle C4, reference V1 is the axis of hole H1, reference U1 is the center hole J1, and reference U2 is the center hole J2. Detailed Implementation

[0056] Specific implementation method one: Combining Figures 1 to 18 This embodiment describes a shaft alignment method for a high-speed planetary gear transmission device. The method is characterized in that it targets the shaft system of the high-speed planetary gear transmission device, which includes a housing 1, a planet carrier 2, an output assembly 3, an internal gear ring 4, planet gears 5, a sun gear 6, and bearings 7.

[0057] The housing 1 includes a lower housing 101, an upper housing 102, a planetary carrier upright plate 103, a lower front cover 104, and an upper front cover 105; wherein, the lower housing 101 and the upper housing 102 form a first ring structure, and the upper housing 102 is disposed on the lower housing 101, and the planetary carrier upright plate 103 is disposed on the left side of the first ring structure; the lower front cover 104 and the upper front cover 105 form a second ring structure, and the lower front cover 104 is disposed at the lower part of the upper front cover 105; the second ring structure is fixed on the left side wall of the planetary carrier upright plate 103;

[0058] The output assembly 3 includes an output shaft 301, a connecting plate 302, and a floating gear ring 303. The left end of the output shaft 301 is disposed within the first annular structure, and is coaxially mounted with the right end of the sun gear 6 via a second tooling bearing 702. The left end of the sun gear 6 extends from the left side of the second annular structure along the planetary carrier plate 103 towards the second annular structure, and is connected to the second annular structure via the first tooling bearing 701. The left end of the sun gear 6 also serves as the input end of the transmission device. The right end of the output shaft 301 is connected to the edge of the first annular structure via a third tooling bearing 703, and serves as the output end of the transmission device.

[0059] The planetary gear 5 includes a first planetary gear 501, a second planetary gear 502, and a first planetary gear 503; one side of the first planetary gear 501, one side of the second planetary gear 502, and one side of the first planetary gear 503 are respectively engaged with the sun gear 6.

[0060] There are three bearings 7, which are respectively located at the axis of the first planetary gear 501, the axis of the second planetary gear 502, and the axis of the third planetary gear 503.

[0061] The planet carrier 2 is disposed within the first ring structure; the other side of the first planet gear 501, the other side of the second planet gear 502, and the other side of the first planet gear 503 respectively mesh with the inner side of the internal gear ring 4;

[0062] The floating gear ring 303 is fixed on the outside of the inner gear ring 4, and the inner gear ring 4 has an inner gear ring left 401 and an inner gear ring right 402.

[0063] The adjustment method includes the following steps:

[0064] Adjust the bearing holes on housing 1;

[0065] Center the output shaft assembly 3;

[0066] Adjust the dimensional and geometric tolerances of the transmission components;

[0067] After assembling the lower housing 101, planetary carrier plate 103, lower front cover 104, planetary carrier 2, output shaft assembly 3, internal gear ring 4, planetary gears 5, sun gear 6, first tooling bearing 701, second tooling bearing 702, and third tooling bearing 703 respectively, the coaxiality of the rolling band J4 of the sun gear 6 relative to the reference U1-X2 is j4, the coaxiality of the outer circular surface G3 of the left internal gear ring 401 relative to the reference U1-X2 is g3, the coaxiality of the outer circular surface E3 of the floating gear ring 303 relative to the reference U1-X2 is e3, the coaxiality of the outer circular surface D5 of the connecting plate 302 relative to the reference U1-X2 is d5, and the coaxiality of the rolling band C5 of the output shaft 301 relative to the reference U1-X2 is c5; the alignment of the shaft system of this high-speed planetary gear transmission device is completed.

[0068] Among them, j4, g3, e3, d5 and c5 are all set values.

[0069] In a preferred embodiment, the specific method for centering the bearing holes on housing 1 is as follows:

[0070] After assembling the lower housing 101, upper housing 102, planetary carrier upright plate 103, lower front cover 104, and upper front cover 105 into housing 1, bearing hole A1 is machined on the left side of housing 1 and bearing hole A2 is machined on the right side of housing 1. The coaxiality of bearing hole A1 and bearing hole A2 is adjusted. Using hole A3 on planetary carrier upright plate 103 as the conversion reference, the coaxiality of bearing hole B1 of planetary carrier 2 and bearing hole A1 of housing 1 is adjusted by centering through stop fine adjustment and positioning with hinge pin hole.

[0071] In a preferred embodiment, the axis of bearing hole A1 is reference Z1; the coaxiality of bearing hole A2 relative to reference Z1 is a2; after the planetary carrier plate 103, lower front cover 104, and upper front cover 105 are assembled, the coaxiality of bearing hole A3 relative to reference Z1 is a3, the coaxiality of bearing hole A4 relative to reference Z1 is a4, and the end face runout of bearing hole A5 relative to reference Z1 is a5; the planetary carrier plate 103 is provided with pre-machined pin hole A6', and the positional degree of A6' relative to reference Z2 is a6; the planetary carrier 2 is machined with bearing hole B1, planetary bearing hole B3, outer cylindrical surface B4, end face B5, and pre-machined pin hole A6'. The axis of the pin hole B2' and bearing hole B1 is reference Y1; the positional tolerance of the planetary bearing hole B3 relative to reference Y1 is b3, the coaxiality of the outer cylindrical surface B4 relative to reference Y1 is b4, the positional tolerance of the pin hole B2' relative to reference Y1 is b2, and the end face B5 relative to reference Y1 has an end face runout of b5; after the planetary carrier plate 103 is assembled with the planetary carrier 2, the axis of the bearing hole A3 is reference Z2; the coaxiality of the bearing hole B1 relative to reference Z2 is b1, and it is equipped with 63 hinge pin holes A6 and 23 hinge pin holes; after the housing 1 is assembled with the planetary carrier 2, the coaxiality of the bearing hole B1 relative to references Z1-Z3 is b1.

[0072] Among them, a2, a3, a4, a5, a6, b1, b2, b3, b4, and b5 are all set values, the number of pin holes A6' is 3, the number of planetary bearing holes B3 is 3, and the number of pin holes B2' is 3.

[0073] In a preferred embodiment, the specific method for centering the output shaft assembly 3 is as follows:

[0074] Adjust the dimensional and geometric tolerances of the output shaft 301, connecting plate 302, and floating gear ring 303 respectively, and set a dummy shaft 304 at the left end of the output shaft 301, and adjust the dimensional and geometric tolerances of the dummy shaft 304; when assembling the output shaft 301 and connecting plate 302, the coaxiality of D5 relative to the reference X1-X2 is d5; then, positioning is completed by fitting the reamer pin hole D2 and the pin hole C3; assemble the output shaft 301, connecting plate 302, floating gear ring 303, dummy shaft 304, and the positioning pin 305 used to fix the connecting plate 302 and the output shaft 301 together, adjust the relative positions of the connecting plate 302 and the floating gear ring 303 so that the coaxiality of E3 relative to X2-X6 reaches e3, and the coaxiality of C5 relative to X2-X6 reaches c5, and then fit the reamer pin hole E2 and the pin hole D3;

[0075] Among them, there are 8 pin holes D2; 8 pin holes C3; 12 pin holes E2; and 12 pin holes D3.

[0076] In a preferred embodiment, the output shaft 301 is machined with an outer circle C1, an outer stop C2, eight pre-machined pin holes C3', an outer circle C4, a rolled band C5, a center hole C6, and a center hole C7; the center hole C7 is reference X1, and the center hole C6 is reference X2; the coaxiality of the outer circle C1 relative to X1-X2 is c1, the coaxiality of the outer stop C2 relative to X1-X2 is c2, the positional accuracy of the pre-machined pin hole C3' relative to X1-X2 is c3, the coaxiality of the outer circle C4 relative to X1-X2 is c4, and the coaxiality of the rolled band C5 relative to reference X1-X2 is c5; the connecting plate 302 is machined with an inner stop D1, pre-machined pin holes D2', pre-machined pin holes D3', an outer stop D4, an outer circle D5, and a stop end face D6; the axis of the inner stop D1 is reference X3; the pre-machined pin holes D2' are... The positional tolerance of X3 is d2, and the positional tolerance of the pre-machined pin hole D3' relative to the datum X3 is d3; the coaxiality of the outer stop D4 relative to X3 is d4, the coaxiality of the outer circle D5 relative to the datum X3 is d5, and the runout of the stop end face D6 relative to the end face of X3 is d6; the floating gear ring 303 is machined with an inner stop E1, a pre-machined pin hole E2', an outer circle E3, a tooth root circle E4, and an end face E5; the axis of the inner stop E1 is the datum X4; the positional tolerance of the pre-machined pin hole E2' relative to X4 is e2, the coaxiality of the outer circle E3 relative to X4 is e3, the positional tolerance of the tooth root circle E4 relative to X4 is e4, and the runout of the end face E5 relative to X4 is e5; the dummy shaft 304 is machined with an inner hole F1 and an outer circle F2; the axis of the inner hole F1 is the datum X5; and the coaxiality of the outer circle F2 relative to X5 is f2.

[0077] Among them, c1, c2, c3, c4, d2, d3, d4, d6, e2, e4, e5 and f2 are all set values; the number of pre-machined pin holes C3' is 8, the number of pre-machined pin holes D3" is 12, and the number of pre-machined pin holes E2' is 12.

[0078] In a preferred embodiment, the specific method for adjusting the dimensional tolerances and geometric tolerances of the transmission components is as follows:

[0079] Adjust the difference between the root circle E4 of the floating gear ring 303 and the tip circle G1 of the outer tooth of the left 401 of the internal gear ring and the tip circle G4 of the outer tooth of the right 402 of the internal gear ring to be between 0.1mm and 0.15mm, i.e., 0.1≤E4-G1≤0.15, 0.1≤E4-G2≤0.15; so that the bearing hole A1, bearing hole A2, bearing hole B1, tooling bearing inner hole K1, tooling bearing inner hole K3, tooling bearing inner hole K5, and tooling bearing outer diameter K 2. The following relationships exist between the outer diameters of the tooling bearing K4, K6, J3, C1, and C4: -0.02≤K2-A1≤0.02, 0.06≤K1-J3≤0.08; -0.02≤K4-B1≤0.02, 0.06≤K3-C1≤0.08; -0.02≤K6-A2≤0.02, 0.06≤K5-C4≤0.08.

[0080] In a preferred embodiment, the left 401 of the internal gear ring is machined with an external tooth tip circle G1, an internal tooth tip circle G2, and an outer cylindrical surface G3; the right 402 of the internal gear ring is machined with an external tooth tip circle G4, an internal tooth tip circle G5, and an outer cylindrical surface G6; the axis of the external tooth tip circle G1 is reference W1, and the axis of the external tooth tip circle G4 is reference W2; the coaxiality g2 of the internal tooth tip circle G2 relative to reference W1, the coaxiality g3 of the outer cylindrical surface G3 relative to reference W1, the coaxiality g5 of the internal tooth tip circle G5 relative to reference W1, and the coaxiality g6 of the outer cylindrical surface G6 relative to reference W2; the first planetary gear 501, the second planetary gear 502, and the first planetary gear 503 are respectively machined with a bearing mounting hole H1 and a tooth tip circle H2; the axis of the bearing mounting hole H1 is reference V1; the coaxiality h2 of the tooth tip circle H2 relative to V1 is h2. The sun gear shaft 6 is machined with a center hole J1, a center hole J2, an outer circle J3, and a rolled band J4; the center hole J1 is the reference U1, and the center hole J2 is the reference U2; the coaxiality of the outer circle J3 relative to U1-U2 is j3, and the coaxiality of the rolled band J4 relative to U1-U2 is j4; the first tooling bearing 701 is machined with an inner hole K1 and an outer circular surface K2, the second tooling bearing 702 is machined with an inner hole K3 and an outer circular surface K4, and the third tooling bearing 703 is machined with an inner hole K5 and an outer circular surface K6; the axis of the inner hole K1 is the reference T1, the axis of the inner hole K3 is the reference T2, and the axis of the inner hole K5 is the reference T3; the coaxiality of the outer circular surface K2 relative to the reference T1 is k2, the coaxiality of the outer circular surface K4 relative to the reference T2 is k4, and the coaxiality of the outer circular surface K6 relative to the reference T3 is k6;

[0081] Among them, g2, g4, g5, g6, h2, j3, j4, k2, k4, and k6 are all set values.

[0082] In this embodiment, after assembling the planetary carrier upright plate 103, the lower front cover 104, and the upper front cover 105, the hole A3, the inner stop A4, and the stop end face A5 are machined. It is ensured that the coaxiality of A3 relative to the reference Z1 reaches a3, the coaxiality of A4 relative to the reference Z1 reaches a4, and the end face runout of A5 relative to the reference Z1 reaches a5.

[0083] Remove the planetary carrier upright plate 103 and pre-machine three pin holes A6' to ensure that the positional accuracy of the three A6's relative to the datum Z2 reaches a6.

[0084] Machining of the planetary carrier 2 includes bearing holes B1, 3 planetary bearing holes B3, outer cylindrical surface B4, end face B5, and pre-machined pin holes B2'. Ensuring that the positional accuracy of B33 relative to Y1 is b3, the coaxiality of B4 relative to Y1 is b4, the positional accuracy of B2' relative to Y1 is b2, and the runout of end face B5 relative to the end face of Y1 is b5.

[0085] Assemble the planetary carrier upright plate 103 and the planetary carrier 2, adjust the relative positions of the two parts, and ensure that the coaxiality of hole B1 relative to Z2 reaches b1. Then, install 63 hinge pin holes A and 23 hinge pin holes B2.

[0086] After the housing 1 and planetary carrier 2 are assembled, the coaxiality of B1 relative to the reference Z1-Z3 can be ensured to reach b1', which means that the centering of the three bearing mounting holes of the housing is completed.

[0087] Using center holes C6 and C7 as references, machine the outer diameter C1, outer stop C2, eight pre-machined pin holes C3', outer diameter C4, and rolled band C5 of output shaft 301. Ensure that the coaxiality of C1 relative to X1-X2 reaches c1, the coaxiality of C2 relative to X1-X2 reaches c2, the positional accuracy of C3' relative to X1-X2 reaches c3, the coaxiality of C4 relative to X1-X2 reaches c4, and the coaxiality of C5 relative to X1-X2 reaches c5.

[0088] Machining the inner stop D1 of the connecting plate 302, pre-machining 8 pin holes D2', pre-machining 12 pin holes D3', outer stop D4, outer circle D5, and stop end face D6. Ensure that the positional accuracy of D2' relative to X3 reaches d2, the positional accuracy of the 12 D3' relative to X3 reaches d3, the coaxiality of D4 relative to X3 reaches d4, the coaxiality of D5 relative to X3 reaches d5, and the end face runout of D6 relative to X3 reaches d6.

[0089] Machining the inner stop E1 of the floating gear ring 303, pre-machining 12 pin holes E2', outer circle E3, root circle E4, and end face E5. Ensure that the positional accuracy of E2'12 relative to X4 reaches e2, the coaxiality of E3 relative to X4 reaches e3, and the end face runout of E5 relative to X4 reaches e5.

[0090] Machin the inner hole F1 and outer circle F2 of the dummy shaft 304. Ensure that the coaxiality of F2 relative to X5 reaches f2.

[0091] Assemble the output shaft 301 and the connecting plate 302, ensuring that the coaxiality of D5 relative to the reference X1-X2 reaches d5', and then fit D28 and C38 hinges.

[0092] Assemble the output shaft 301, connecting plate 302, floating gear ring 303, dummy shaft 304, and locating pin 305 together. Adjust the relative positions of the connecting plate 302 and the floating gear ring 303 to ensure that E3 is coaxial with respect to X2-X6 at e3' and C5 is coaxial with respect to X2-X6 at c5'. Then, install 12 hinge pin holes E2 and 12 D3. At this point, the adjustment of output assembly 3 is complete.

[0093] Machining the external tooth tip circle G1, internal tooth tip circle G2, and external cylindrical surface G3 of the left 401 internal gear ring ensures that the coaxiality of G2 relative to W1 reaches g2, the coaxiality of G3 relative to W1 reaches g3, and ensures that 0.1≤E4-G1≤0.15.

[0094] Machining the external tooth tip circle G4, internal tooth tip circle G5, and external cylindrical surface G6 of the right 402 internal gear ring ensures that the coaxiality of G5 relative to W1 reaches g5, the coaxiality of G6 relative to W2 reaches g6, and ensures that 0.1≤E4-G4≤0.15.

[0095] Machining the bearing mounting holes H1 and addendum circle H2 of planetary gears 501, 502, and 503 ensures that the coaxiality of H2 relative to V1 reaches h2.

[0096] Using the center holes J1 and J2 as references, machine the outer diameter J3 of the sun gear shaft 6 and the rolling band J4. Ensure that the coaxiality of J3 relative to U1-U2 reaches j3, and ensure that the coaxiality of J4 relative to U1-U2 reaches j4.

[0097] The tooling bearings 701, 702, and 703 are used to ensure the following relationships exist between the bearing holes A1, A2, and B1, the inner holes of the tooling bearings K1, K3, and K5, the outer diameters of the tooling bearings K2, K4, and K6, the outer diameter of the sun gear J3, and the outer diameters of the output shaft C1 and C4: -0.02≤K2-A1≤0.02, 0.06≤K1-J3≤0.08; -0.02≤K4-B1≤0.02, 0.06≤K3-C1≤0.08; -0.02≤K6-A2≤0.02, 0.06≤K5-C4≤0.08.

[0098] After assembling the lower housing 101, planetary carrier plate 103, lower front cover 104, planetary carrier 2, output shaft assembly 3, internal gear ring 4, planetary gears 5, sun gear 6, and tooling bearings 701, 702, and 703, the coaxiality of the rolling band J4 of the sun gear 6 relative to the reference U1-X2 reaches j4", the coaxiality of the outer circular surface G3 of the left internal gear ring 401 relative to the reference U1-X2 reaches g3", the coaxiality of the outer circular surface E3 of the floating gear ring 303 relative to the reference U1-X2 reaches e3", the coaxiality of the outer circular surface D5 of the connecting plate 302 relative to the reference U1-X2 reaches d5", and the coaxiality of the rolling band C5 of the output shaft 301 relative to the reference U1-X2 reaches c5". Thus, the shaft alignment of the high-speed planetary gear transmission device is completed.

[0099] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for centering the shaft system of a high-speed planetary gear transmission device, the method being applied to the shaft system of the high-speed planetary gear transmission device, the high-speed planetary gear transmission device comprising a housing (1), a planet carrier (2), an output assembly (3), an internal gear ring (4), planetary gears (5), a sun gear (6), and bearings (7). The housing (1) includes a lower housing (101), an upper housing (102), a planetary carrier upright plate (103), a lower front cover (104), and an upper front cover (105); wherein, The lower housing (101) and the upper housing (102) form a first ring structure, and the upper housing (102) is disposed on the lower housing (101). The planetary carrier upright plate (103) is disposed on the left side of the first ring structure. The lower front cover (104) and the upper front cover (105) form a second ring structure, and the lower front cover (104) is disposed on the lower part of the upper front cover (105). The second ring structure is fixed on the left side wall of the planetary carrier upright plate (103). The output assembly (3) includes an output shaft (301), a connecting plate (302), and a floating gear ring (303); wherein, the left end of the output shaft (301) is disposed inside the first ring structure, and the left end of the output shaft (301) and the right end of the sun gear (6) are coaxially disposed together through the second tooling bearing (702), the left end of the sun gear (6) extends from the left side of the second ring structure along the direction of the planetary carrier plate (103) toward the second ring structure, and the left end of the sun gear (6) is connected to the second ring structure through the first tooling bearing (701), and the left end of the sun gear (6) serves as the input end of the transmission device, and the right end of the output shaft (301) is connected to the edge of the first ring structure through the third tooling bearing (703); at the same time, the right end of the output shaft (301) serves as the output end of the transmission device; The planetary gear (5) includes a first planetary gear (501), a second planetary gear (502), and a first planetary gear (503); one side of the first planetary gear (501), one side of the second planetary gear (502), and one side of the first planetary gear (503) are respectively engaged with the sun gear (6); The bearing (7) consists of three bearings, which are respectively located at the axis of the first planetary gear (501), the axis of the second planetary gear (502), and the axis of the third planetary gear (503). The planet carrier (2) is disposed within the first ring structure; the other side of the first planetary gear (501), the other side of the second planetary gear (502) and the other side of the first planetary gear (503) respectively mesh with the inner side of the internal gear ring (4); The floating gear ring (303) is fixed on the outside of the inner gear ring (4), and the inner gear ring (4) has an inner gear ring left (401) and an inner gear ring right (402). The method for adjusting the center includes the following steps: The bearing holes on the housing (1) are adjusted to be centered; The output shaft assembly (3) is centered; Adjust the dimensional and geometric tolerances of the transmission components; After assembling the lower housing (101), planetary carrier plate (103), lower front cover (104), planetary carrier (2), output shaft assembly (3), internal gear ring (4), planetary gear (5), sun gear (6), first tooling bearing (701), second tooling bearing (702), and third tooling bearing (703), the coaxiality of the rolling belt J4 of the sun gear (6) relative to the reference U1-X2 is j4, the coaxiality of the outer circular surface G3 of the left (401) of the internal gear ring relative to the reference U1-X2 is g3, the coaxiality of the outer circular surface E3 of the floating gear ring (303) relative to the reference U1-X2 is e3, the coaxiality of the outer circular surface D5 of the connecting plate (302) relative to the reference U1-X2 is d5, and the coaxiality of the rolling belt C5 of the output shaft (301) relative to the reference U1-X2 is c5; the centering of the shaft system of the high-speed planetary gear transmission device is completed. Among them, j4, g3, e3, d5 and c5 are all set values; The method for centering the bearing holes on the housing (1) is characterized by: After assembling the lower housing (101), upper housing (102), planetary carrier plate (103), lower front cover (104), and upper front cover (105) into housing (1), a bearing hole A1 is machined on the left side of housing (1), and a bearing hole A2 is machined on the right side of housing (1). The coaxiality of bearing hole A1 and bearing hole A2 is adjusted. Using hole A3 on planetary carrier plate (103) as the conversion reference, the coaxiality of bearing hole B1 of planetary carrier (2) and bearing hole A1 of housing (1) is adjusted by adjusting the centering of the stop and positioning the hinge pin hole. The specific method for centering the output shaft assembly (3) is as follows: Adjust the dimensional and geometric tolerances of the output shaft (301), connecting plate (302) and floating gear ring (303) respectively, and set a dummy shaft (304) at the left end of the output shaft (301), and adjust the dimensional and geometric tolerances of the dummy shaft (304).

2. The shaft alignment method for a high-speed planetary gear transmission device according to claim 1, characterized in that, The axis of bearing hole A1 is reference Z1; the coaxiality of bearing hole A2 relative to reference Z1 is a2; after the planetary carrier plate (103), the lower front cover (104), and the upper front cover (105) are assembled, the coaxiality of bearing hole A3 relative to reference Z1 is a3, the coaxiality of bearing hole A4 relative to reference Z1 is a4, and the end face runout of bearing hole A5 relative to reference Z1 is a5; the planetary carrier plate (103) is provided with pre-machined pin hole A6', and the positional degree of A6' relative to reference Z2 is a6; the planetary carrier (2) is machined with bearing hole B1, planetary bearing hole B3, outer cylindrical surface B4, end face B5, and pre-machined pin hole B2'. The axis of bearing hole B1 is reference Y1; the position of planetary bearing hole B3 relative to reference Y1 is b3, the coaxiality of outer circular surface B4 relative to reference Y1 is b4, the position of pin hole B2' relative to reference Y1 is b2, and the end face B5 relative to reference Y1 has an end face runout of b5; after the planetary carrier plate (103) and planetary carrier (2) are assembled, the axis of bearing hole A3 is reference Z2; the coaxiality of bearing hole B1 relative to reference Z2 is b1, and it is equipped with hinge pin holes A6 (3) and B2 (3); after the housing (1) and planetary carrier (2) are assembled, the coaxiality of bearing hole B1 relative to reference Z1-Z3 is b1; Among them, a2, a3, a4, a5, a6, b1, b2, b3, b4, and b5 are all set values, the number of pin holes A6' is 3, the number of planetary bearing holes B3 is 3, and the number of pin holes B2' is 3.

3. The shaft alignment method for a high-speed planetary gear transmission device according to claim 1, characterized in that, When assembling the output shaft (301) and the connecting plate (302), the coaxiality of D5 relative to the reference X1-X2 is d5; then the positioning is completed by fitting the hinge pin hole D2 and the pin hole C3; the output shaft (301), the connecting plate (302), the floating gear ring (303), the dummy shaft (304) and the positioning pin (305) used to fix the connecting plate (302) and the output shaft (301) are assembled together, and the relative positions of the connecting plate (302) and the floating gear ring (303) are adjusted so that the coaxiality of E3 relative to X2-X6 reaches e3 and the coaxiality of C5 relative to X2-X6 reaches c5, and then the hinge pin hole E2 and the pin hole D3 are fitted. Among them, there are 8 pin holes D2; 8 pin holes C3; 12 pin holes E2; and 12 pin holes D3.

4. The shaft alignment method for a high-speed planetary gear transmission device according to claim 3, characterized in that, The output shaft (301) is machined with an outer circle C1, an outer stop C2, a pre-machined pin hole C3', an outer circle C4, a rolled band C5, a center hole C6, and a center hole C7; the center hole C7 is reference X1, and the center hole C6 is reference X2; the coaxiality of the outer circle C1 relative to X1-X2 is c1, the coaxiality of the outer stop C2 relative to X1-X2 is c2, the position of the pre-machined pin hole C3' relative to X1-X2 is c3, the coaxiality of the outer circle C4 relative to X1-X2 is c4, and the coaxiality of the rolled band C5 relative to reference X1-X2 is c5; the connecting plate (302) is machined with an inner stop D1, a pre-machined pin hole D2', a pre-machined pin hole D3', an outer stop D4, an outer circle D5, and a stop end face D6; the axis of the inner stop D1 is reference X3; the axis of the pre-machined pin hole D2' relative to X3 is c4; the coaxiality of the pre-machined pin hole D2' relative to X3 is c5. The positional tolerance is d2, the positional tolerance of the pre-machined pin hole D3' relative to the datum X3 is d3; the coaxiality of the outer stop D4 relative to X3 is d4, the coaxiality of the outer circle D5 relative to the datum X3 is d5, and the runout of the end face D6 relative to X3 is d6; the floating gear ring (303) is machined with an inner stop E1, a pre-machined pin hole E2', an outer circle E3, a tooth root circle E4, and an end face E5; the axis of the inner stop E1 is the datum X4; the positional tolerance of the pre-machined pin hole E2' relative to X4 is e2, the coaxiality of the outer circle E3 relative to X4 is e3, the positional tolerance of the tooth root circle E4 relative to X4 is e4, and the runout of the end face E5 relative to X4 is e5; the dummy shaft (304) is machined with an inner hole F1 and an outer circle F2; the axis of the inner hole F1 is the datum X5; the coaxiality of the outer circle F2 relative to X5 is f2. Among them, c1, c2, c3, c4, d2, d3, d4, d6, e2, e4, e5 and f2 are all set values; the number of pre-machined pin holes C3' is 8, the number of pre-machined pin holes D3'' is 12, and the number of pre-machined pin holes E2' is 12.

5. The shaft alignment method for a high-speed planetary gear transmission device according to claim 1, characterized in that, The specific methods for adjusting the dimensional and geometric tolerances of transmission components are as follows: Adjust the difference between the root circle E4 of the floating gear ring (303) and the tip circle G1 of the outer tooth of the left (401) inner gear ring and the tip circle G4 of the outer tooth of the right (402) inner gear ring to be between 0.1mm and 0.15mm, i.e., 0.1≤E4-G1≤0.15, 0.1≤E4-G2≤0.15; so that the bearing hole A1, bearing hole A2, bearing hole B1, tooling bearing inner hole K1, tooling bearing inner hole K3, tooling bearing inner hole K5, and tooling bearing The outer diameters K2, K4, and K6 of the tooling bearing, the outer diameter J3 of the sun gear, C1 and C4 of the output shaft have the following relationships: -0.02≤K2-A1≤0.02, 0.06≤K1-J3≤0.08; -0.02≤K4-B1≤0.02, 0.06≤K3-C1≤0.08; -0.02≤K6-A2≤0.02, 0.06≤K5-C4≤0.

08.

6. The shaft alignment method for a high-speed planetary gear transmission device according to claim 5, characterized in that, The left (401) internal gear ring is machined with an external tooth tip circle G1, an internal tooth tip circle G2, and an outer cylindrical surface G3; the right (402) internal gear ring is machined with an external tooth tip circle G4, an internal tooth tip circle G5, and an outer cylindrical surface G6; the axis of the external tooth tip circle G1 is reference W1, and the axis of the external tooth tip circle G4 is reference W2; the coaxiality of the internal tooth tip circle G2 relative to reference W1 is g2, the coaxiality of the outer cylindrical surface G3 relative to reference W1 is g3, the coaxiality of the internal tooth tip circle G5 relative to reference W1 is g5, and the coaxiality of the outer cylindrical surface G6 relative to reference W2 is g6; the first planetary gear (501), the second planetary gear (502), and the first planetary gear (503) are respectively machined with bearing mounting holes H1 and tip circles H2; the axis of the bearing mounting hole H1 is reference V1; the coaxiality of the tip circle H2 relative to V1 is h2; the sun The axle (6) is machined with a center hole J1, a center hole J2, an outer circle J3, and a rolling band J4; the center hole J1 is the reference U1, and the center hole J2 is the reference U2; the coaxiality of the outer circle J3 relative to U1-U2 is j3, and the coaxiality of the rolling band J4 relative to U1-U2 is j4; the first tooling bearing (701) is machined with an inner hole K1 and an outer circular surface K2, the second tooling bearing (702) is machined with an inner hole K3 and an outer circular surface K4, and the third tooling bearing (703) is machined with an inner hole K5 and an outer circular surface K6; the axis of the inner hole K1 is the reference T1, the axis of the inner hole K3 is the reference T2, and the axis of the inner hole K5 is the reference T3; the coaxiality of the outer circular surface K2 relative to the reference T1 is k2, the coaxiality of the outer circular surface K4 relative to the reference T2 is k4, and the coaxiality of the outer circular surface K6 relative to the reference T3 is k6; Among them, g2, g4, g5, g6, h2, j3, j4, k2, k4, and k6 are all set values.

Images