CN215444992U

CN215444992U - Miniature planetary gear motor convenient to automatic assembly

Info

Publication number: CN215444992U
Application number: CN202120997409.0U
Authority: CN
Inventors: 周志鹏; 王佳星; 王朋
Original assignee: Once Top Motor Manufacture Co ltd
Current assignee: Once Top Motor Manufacture Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-01-07
Anticipated expiration: 2031-05-11

Abstract

The utility model discloses a miniature planetary gear motor convenient for automatic assembly, which comprises a stepping motor and a gear box welded with the output end of the stepping motor, wherein the gear box comprises an inner gear ring, a first planetary gear and a second planetary gear which are arranged in the inner gear ring and used for planetary reduction, a planet carrier which is arranged in the inner gear ring and used for carrying the first planetary gear, an output planet carrier which is used for carrying the second planetary gear, a sun gear which is sleeved at the output end of the stepping motor and used for transmitting torque, and an output assembly which is arranged at one end of the inner gear ring, which is far away from the stepping motor, and used for outputting torque; the first planet wheel and the second planet wheel are arranged on the planet carrier and the output planet carrier respectively, one end of the sun wheel is meshed with the first planet wheel, one end of the planet carrier is meshed with the second planet wheel, and one end of the output planet carrier is connected with the output assembly. The utility model ensures the stable and reliable structure of the product, is convenient for the automatic assembly of the motor, and further achieves the purposes of improving the assembly efficiency and improving the productivity.

Description

Miniature planetary gear motor convenient to automatic assembly

Technical Field

The utility model belongs to the technical field of motors, and particularly relates to a miniature planetary gear motor convenient for automatic assembly.

Background

Miniature planet gear motor wide application in fields such as 5G communications facilities, intelligent robot, intelligent house, medical care and electronic product, in the practical application process, the size requirement to miniature planet gear motor's gear box is littleer and littleer, and then makes miniature planet gear motor have small, light in weight, bearing capacity is high, long service life, operate steadily, the noise is low, output torque is big, the velocity ratio is big, characteristics such as efficient and performance safety, so that obtain the massive demands in market.

In the prior art, because the micro planetary gear reduction motor has small size and small product parts, the defects of inconvenient manual assembly, low assembly efficiency and the like exist in the actual production and assembly process, and therefore, a micro planetary gear reduction motor which has stable and reliable structure, high precision, manufacturability and convenient assembly is needed to be designed.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a micro planetary gear motor which is easy to assemble automatically, so as to solve the above-mentioned problems in the background art.

For realizing the purpose of the above utility model, the technical scheme adopted is as follows:

a miniature planetary gear motor convenient for automatic assembly comprises a stepping motor and a gear box welded with the output end of the stepping motor, wherein the gear box comprises an inner gear ring matched with each part, a first planet wheel and a second planet wheel which are arranged in the inner gear ring and used for planetary reduction, a planet carrier arranged in the inner gear ring and used for carrying the first planet wheel, an output planet carrier used for carrying the second planet wheel, a sun wheel sleeved at the output end of the stepping motor and used for transmitting torque, and an output assembly arranged at one end of the inner gear ring, which is far away from the stepping motor, and used for outputting torque; the first planet wheel and the second planet wheel are respectively arranged on the planet carrier and the output planet carrier, one end of the sun wheel is meshed with the first planet wheel, one end of the planet carrier is meshed with the second planet wheel, and one end of the output planet carrier is connected with the output assembly.

The utility model is further configured to: the output assembly comprises an output shaft, an output flange and ball bearings, the ball bearings are symmetrically embedded in the output flange, the output shaft penetrates through the output flange and the ball bearings, the output flange is pressed into one end, deviating from the stepping motor, of the inner gear ring, the output planet carrier and the ball bearings are in clearance fit with the output shaft and used for grabbing, positioning and assembling of the manipulator.

The utility model is further configured to: one end of the output shaft, facing the inner gear ring, is welded with a metal gasket for reducing the axial vibration of the output shaft in the gear box, the ball bearing is in clearance fit with the output shaft, and the ball bearing is in interference fit with the output flange.

The utility model is further configured to: the output end of the stepping motor is sleeved with a cushion block, the cushion block is matched with one end, facing the stepping motor, of the inner gear ring and used for circumferential positioning and axial limiting of the stepping motor, and the sun wheel is sleeved in the cushion block.

The utility model is further configured to: the sun gear and the planet carrier are designed to be of small boss structures and used for reducing friction surfaces and friction resistance.

The utility model is further configured to: one of a plurality of teeth on the sun wheel, the first planet wheel, the second planet wheel or the inner gear ring is selected teeth, so that when a manipulator grabs a part to assemble a gear, the gear can be smoothly assembled to the tooth groove position of the matched gear, and the production efficiency of gear box assembly is improved.

The utility model is further configured to: the cushion block, the sun gear, the inner gear ring and the output assembly are all designed coaxially.

The utility model is further configured to: the planet carrier with the output planet carrier respectively towards the one end homogeneous connection of first planet wheel with the second planet wheel has a plurality of shaft, first planet wheel with the second planet wheel wears to establish respectively the planet carrier with the output planet carrier the epaxial.

In summary, compared with the prior art, the utility model discloses a miniature planetary gear motor convenient for automatic assembly, wherein a gear box comprises an inner gear ring, a first planetary gear and a second planetary gear which are arranged in the inner gear ring, a planet carrier used for carrying the first planetary gear, an output planet carrier used for carrying the second planetary gear, a sun gear sleeved at the output end of a stepping motor and an output assembly arranged at one end of the inner gear ring; the first planet wheel and the second planet wheel are arranged on the planet carrier and the output planet carrier respectively, one end of the sun wheel is meshed with the first planet wheel, one end of the planet carrier is meshed with the second planet wheel, and one end of the output planet carrier is connected with the output assembly. Through this setting, guaranteed product stable in structure reliable, the automatic equipment of being convenient for, and then reach and promote assembly efficiency, improve the purpose of productivity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic overall structure diagram of a micro planetary gear motor convenient for automatic assembly according to the embodiment;

FIG. 2 is an exploded view of a micro planetary gear motor for facilitating automated assembly according to the present embodiment;

FIG. 3 is an assembled sectional structural view of the gear case provided in the present embodiment;

fig. 4 is a schematic structural diagram of a sun gear provided in the present embodiment;

fig. 5 is a schematic structural diagram of the first planet wheel or the second planet wheel provided by the embodiment;

fig. 6 is a schematic structural view of the ring gear provided in the present embodiment.

Reference numerals: 1. a stepping motor; 11. cushion blocks; 2. a gear case; 21. an inner gear ring; 22. a first planet gear; 23. a second planet wheel; 24. a planet carrier; 25. an output planet carrier; 26. a sun gear; 3. an output component; 31. an output shaft; 311. a metal gasket; 32. an output flange; 33. a ball bearing; 4. selecting teeth; 5. and (4) a wheel axle.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the present invention described above may be combined with each other as long as they do not conflict with each other.

A micro planetary gear motor convenient for automatic assembly is disclosed, as shown in fig. 1-3, and comprises a stepping motor 1 and a gear box 2 welded with the output end of the stepping motor 1, wherein the gear box 2 comprises an inner gear ring 21 used for matching with each part, a first planetary gear 22 and a second planetary gear 23 arranged in the inner gear ring 21 and used for planetary reduction, a planet carrier 24 arranged in the inner gear ring 21 and used for carrying the first planetary gear 22, an output planet carrier 25 used for carrying the second planetary gear 23, a sun gear 26 sleeved on the output end of the stepping motor 1 and used for transmitting torque, and an output assembly 3 arranged at one end of the inner gear ring 21 departing from the stepping motor 1 and used for outputting torque; the first planet wheel 22 and the second planet wheel 23 are respectively arranged on a planet carrier 24 and an output planet carrier 25, one end of a sun wheel 26 is meshed with the first planet wheel 22, one end of the planet carrier 24 is meshed with the second planet wheel 23, and one end of the output planet carrier 25 is connected with the output assembly 3.

In the specific implementation process, the output assembly 3 comprises an output shaft 31, an output flange 32 and ball bearings 33, the ball bearings 33 are symmetrically embedded in the output flange 32, the output shaft 31 penetrates through the output flange 32 and the ball bearings 33, the output flange 32 is pressed into one end, away from the stepping motor 1, of the inner gear ring 21, and the output planet carrier 25 and the ball bearings 33 are in clearance fit with the output shaft 31 and used for grabbing, positioning and assembling of a manipulator.

Further, one end of the output shaft 31 facing the inner gear ring 21 is welded with a metal gasket 311 for reducing axial movement of the output shaft 31 in the gear box 2, the ball bearing 33 is in clearance fit with the output shaft 31, the ball bearing 33 is in interference fit with the output flange 32, and the metal gasket 311 also plays a role in facilitating assembly of a manipulator.

Wherein, the output pot head of step motor 1 is equipped with cushion 11, and cushion 11 and the one end phase-lock 21 towards step motor 1 of ring gear are used for step motor 1's circumferential direction location and axial spacing, and sun gear 26 cover is established in cushion 11.

It should be noted that one end of the sun gear 26 and the planet carrier 24 is designed to be a small boss structure for reducing friction surface and friction resistance, improving transmission efficiency of the gear box 2 and maximizing transmission torque.

It should be noted that the first planet gears 22 and the second planet gears 23 are identical in structure and equal in size.

It should be noted that teeth meshed with the first planet wheel 22 and the second planet wheel 23 are uniformly arranged on the inner wall of the inner gear ring 21 in a circumferential manner, so that the structural connection is stable and reliable.

In this embodiment, as shown in fig. 4 to 6, one of the teeth on the sun gear 26, the first planet gear 22, the second planet gear 23, or the inner gear ring 21 is the selected tooth 4, which is used for the manipulator to smoothly assemble the gear to the tooth slot position of the mating gear when grabbing the part assembly gear, and improves the production efficiency of assembling the gear box 2, so as to complete the automatic assembly of the gear box 2, solve the problem of low production efficiency caused by the inconvenient assembly of the existing micro planetary gear box, and improve the production efficiency.

In the specific implementation process, the cushion block 11, the sun gear 26, the inner gear ring 21 and the output assembly 3 are all designed coaxially.

Further, a plurality of axles 5 are integrally connected to one ends of the planet carrier 24 and the output planet carrier 25 facing the first planet wheel 22 and the second planet wheel 23, and the first planet wheel 22 and the second planet wheel 23 are respectively arranged on the axles 5 of the planet carrier 24 and the output planet carrier 25 in a penetrating manner.

In the assembling process of the micro planetary gear motor, the method comprises the following steps:

a. welding the output shaft 31 to the metal washer 311;

b. pressing the ball bearing 33 into the output flange 32;

c. pressing the output flange 32 of the pressed ball bearing 33 into the inner gear ring 21;

d. putting the output shaft 31 welded with the metal gasket 311 into the self-output assembly 3;

e. putting the output carrier 25 into the output shaft 31;

f. placing the second planet wheels 23 into the plurality of axles 5 of the output planet carrier 25;

g. putting the planet carrier 24 into the inner gear ring 21;

h. placing the first planet gears 22 into the plurality of axles 5 of the planet carrier 24;

i. placing the cushion block 11 into the inner gear ring 21;

j. the sun gear 26 is placed into the inner gear ring 21 after being placed into the output end of the self-stepping motor 1, and the assembly of the whole welding machine is completed.

In this embodiment, the working process of the micro planetary gear motor is as follows: the stepping motor 1 provides an original driving force to drive the sun gear 26 to rotate, the sun gear 26 drives the first planet gear 22 and the second planet gear 23 to rotate, the rotating speed of the stepping motor 1 is reduced through the gear size and the gear difference of each stage, and finally the transmission rotating speed and the torque force are output at the end of the output shaft 31.

In conclusion, the utility model has the following beneficial effects: the utility model discloses a miniature planetary gear motor convenient for automatic assembly.A gear box 2 comprises an inner gear ring 21, a first planetary gear 22, a second planetary gear 23, a planet carrier 24, an output planet carrier 25, a sun gear 26 and an output component 3; the first planet wheel 22 and the second planet wheel 23 are respectively arranged on the planet carrier 24 and the output planet carrier 25, one end of the sun wheel 26 is meshed with the first planet wheel 22, one end of the planet carrier 24 is meshed with the second planet wheel 23, one end of the output planet carrier 25 is connected with the output component 3, the output component 3 comprises an output shaft 31, an output flange 32 and ball bearings 33, the ball bearings 33 are symmetrically embedded in the output flange 32, the output shaft 31 penetrates through the output flange 32 and the ball bearings 33, the output flange 32 is pressed into one end of the inner gear ring 21, which is far away from the stepping motor 1, the output planet carrier 25 and the ball bearings 33 are in clearance fit with the output shaft 31, one of a plurality of teeth on the sun wheel 26, the first planet wheel 22, the second planet wheel 23 or the inner gear ring 21 is selected tooth 4, and the manipulator can smoothly assemble the gear to the tooth position of the matched gear and improve the production efficiency of the gear box 2 assembly when grabbing the gear assembly, through this setting, guaranteed product stable in structure reliable, the automatic equipment of being convenient for, and then reach and promote assembly efficiency, improve the purpose of productivity.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. The utility model provides a miniature planet gear motor convenient to automatic assembly, including step motor (1) and with step motor's (1) output welded gear box (2), its characterized in that:

the gearbox (2) comprises an inner gear ring (21) used for matching all parts, a first planet wheel (22) and a second planet wheel (23) which are arranged in the inner gear ring (21) and used for planetary reduction, a planet carrier (24) which is arranged in the inner gear ring (21) and used for carrying the first planet wheel (22), an output planet carrier (25) which is used for carrying the second planet wheel (23), a sun gear (26) which is sleeved at the output end of the stepping motor (1) and used for transmitting torque, and an output assembly (3) which is arranged at one end of the inner gear ring (21) departing from the stepping motor (1) and used for outputting torque;

first planet wheel (22) with second planet wheel (23) are located respectively planet carrier (24) with on output planet carrier (25), the one end of sun gear (26) with first planet wheel (22) meshing, the one end of planet carrier (24) with second planet wheel (23) meshing, the one end of output planet carrier (25) with output subassembly (3) are connected.

2. The micro planetary gear motor convenient for automatic assembly as claimed in claim 1, wherein the output assembly (3) comprises an output shaft (31), an output flange (32) and ball bearings (33), the ball bearings (33) are symmetrically embedded in the output flange (32), the output shaft (31) penetrates through the output flange (32) and the ball bearings (33), the output flange (32) is pressed into one end of the inner gear ring (21) departing from the stepping motor (1), and the output planet carrier (25) and the ball bearings (33) are in clearance fit with the output shaft (31) for grabbing, positioning and assembling of a manipulator.

3. A miniature planetary gear motor facilitating automatic assembly according to claim 2, wherein one end of the output shaft (31) facing the inner gear ring (21) is welded with a metal gasket (311) for reducing axial play of the output shaft (31) in the gear box (2), the ball bearing (33) is in clearance fit with the output shaft (31), and the ball bearing (33) is in interference fit with the output flange (32).

4. The micro planetary gear motor convenient for automatic assembly as claimed in claim 1, wherein the output end of the stepping motor (1) is sleeved with a cushion block (11), the cushion block (11) is matched with one end of the inner gear ring (21) facing the stepping motor (1) and is used for circumferential positioning and axial limiting of the stepping motor (1), and the sun gear (26) is sleeved in the cushion block (11).

5. A miniature planetary gear motor facilitating automatic assembly according to claim 1, wherein one end of the sun gear (26) and one end of the planet carrier (24) are designed to have a small boss structure for reducing friction surface and friction resistance.

6. The micro planetary gear reducer convenient for automatic assembly as claimed in claim 1, wherein one of the teeth on the sun wheel (26), the first planetary wheel (22), the second planetary wheel (23) or the inner gear ring (21) is a selected tooth (4) for a manipulator to smoothly assemble the gear to the tooth groove position of the mating gear when grabbing the part assembly gear and improving the production efficiency of assembling the gear box (2).

7. A miniature planetary gear motor facilitating automated assembly according to claim 4, wherein the spacer (11), the sun gear (26), the inner gear ring (21) and the output assembly (3) are all designed coaxially.

8. A miniature planetary gear motor facilitating automatic assembly according to claim 1, wherein the ends of the planet carrier (24) and the output planet carrier (25) facing the first planet wheel (22) and the second planet wheel (23), respectively, are integrally connected with a plurality of axles (5), and the first planet wheel (22) and the second planet wheel (23) are respectively arranged on the axles (5) of the planet carrier (24) and the output planet carrier (25).