CN116804417A - Motor transmission structure and manufacturing method thereof - Google Patents

Motor transmission structure and manufacturing method thereof Download PDF

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Publication number
CN116804417A
CN116804417A CN202310466093.6A CN202310466093A CN116804417A CN 116804417 A CN116804417 A CN 116804417A CN 202310466093 A CN202310466093 A CN 202310466093A CN 116804417 A CN116804417 A CN 116804417A
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CN
China
Prior art keywords
teeth
main body
tooth
input shaft
main
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310466093.6A
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Chinese (zh)
Inventor
请求不公布姓名
冯骥
兰云志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sanhua Intelligent Controls Co Ltd
Original Assignee
Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sanhua Intelligent Controls Co Ltd filed Critical Zhejiang Sanhua Intelligent Controls Co Ltd
Priority to CN202310466093.6A priority Critical patent/CN116804417A/en
Publication of CN116804417A publication Critical patent/CN116804417A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F16C3/023—Shafts; Axles made of several parts, e.g. by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/08—Profiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/0018—Shaft assemblies for gearings
    • F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02034—Gearboxes combined or connected with electric machines

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The application provides a motor transmission structure, which comprises a shell, a first rotating shaft and a second rotating shaft, wherein the second rotating shaft comprises a main body and a main tooth part, and the main tooth part is connected with one end part of the main body; the second pivot includes the connecting rib, and main tooth portion includes body portion and tooth, and the tooth is located the circumference lateral wall of body portion, and main part and tooth are all connected with the connecting rib. The method comprises the steps of die casting or milling a metal component to form a main body and a main tooth part, and milling teeth on the circumferential side wall of the main tooth part through a milling cutter until the effective tooth length of the teeth is L; and milling the reinforcing section and the connecting ribs between the adjacent reinforcing sections between the main body and the main tooth part by the milling cutter when the tooth is milled to the effective tooth length. According to the application, the main body and the teeth are connected with the connecting ribs, so that the strength of the teeth is improved, the connecting ribs and the reinforcing section are integrally processed and formed in the process of milling the teeth, the processing is simple and convenient, the milled second rotating shaft is stronger in integrity, and the reliability of the whole motor transmission structure is further improved.

Description

Motor transmission structure and manufacturing method thereof
Technical Field
The application relates to a motor, in particular to a motor transmission structure and a manufacturing method thereof.
Background
Motors are widely used as important power take-off and transmission devices in various apparatuses, and a carrier requiring power input is connected to an output shaft of the motor. In the axial direction of the motor output shaft, the central line of the carrier and the axial line of the motor output shaft can be on the same straight line or not. When the carrier and the motor output shaft are not on the same straight line, connection and transmission are needed to be realized through a transmission structure.
In the related art, as shown in fig. 9, the transmission structure includes an output shaft, a disc and an input shaft connected to the carrier, and the second rotating shaft and the original disc are engaged and transmitted through teeth respectively disposed thereon, so that a limit is formed when the second rotating shaft is connected to the bearing, and the second rotating shaft is integrally cast with the boss on the main body portion of the second rotating shaft during processing, but thus, when the teeth are processed on the circumferential side wall of one end portion of the second rotating shaft, a tool withdrawal groove is required to be disposed on the circumferential side wall of the main body portion of the second rotating shaft, but the provision of the tool withdrawal groove makes the teeth lack of connection with the main body portion of the second rotating shaft, and the teeth are connected with the circumferential side wall of the main body portion only through the tooth root portion, so that the strength is low, thereby making the reliability of the transmission structure worse.
Disclosure of Invention
The application aims to provide a motor transmission structure with better reliability.
The application provides a motor transmission structure which comprises a shell, a first rotating shaft and a second rotating shaft, wherein the shell is provided with an inner cavity, and the first rotating shaft and the second rotating shaft are at least partially positioned in the inner cavity; the first rotating shaft is in transmission fit with the second rotating shaft; the second rotating shaft comprises a main body and a main tooth part, and the main tooth part is connected with one end part of the main body;
the second rotating shaft comprises a connecting rib, the main tooth part comprises a body part and teeth, the teeth are positioned on the circumferential side wall of the body part, and the main body and the teeth are connected with the connecting rib.
According to the motor transmission structure, the second rotating shaft comprises the connecting ribs, the main tooth part comprises the body part and the teeth, the teeth are positioned on the circumferential side wall of the body part, the main body and the teeth are connected with the connecting ribs, and the connecting strength of the teeth and the main body is enhanced by arranging the connecting ribs, so that the strength of the teeth is improved, and the reliability of the motor transmission structure is improved as a whole.
The application also provides a processing method of the rotating shaft, which comprises the steps of providing a metal component, die-casting or milling the metal component to form a main body and a main tooth part, and milling teeth on the circumferential side wall of the main tooth part along the axial direction of the main body through a milling cutter until the effective tooth length of the teeth is L; and milling the reinforcing section and the connecting ribs between the adjacent reinforcing sections between the main body and the main tooth part by a milling cutter when milling the teeth to the effective tooth length.
In the application, when the milling teeth reach the effective tooth length, the milling cutter mills the reinforcing section between the main body and the main tooth part and the connecting ribs between the adjacent reinforcing sections, the connecting ribs and the reinforcing sections are formed by processing in the process of milling the teeth, the processing is simple and convenient, the milled second rotating shaft has stronger integrity, and the integral reliability of the motor transmission structure is further improved.
Drawings
FIG. 1 is a perspective view of a motor drive structure of the present application;
FIG. 2 is a cross-sectional view of a motor drive structure of the present application;
FIG. 3 is an exploded view of the first spindle and master in the present application;
FIG. 4 is a front view of the first shaft of the present application;
FIG. 5 is a cross-sectional view of the master disk of the present application;
FIG. 6 is a perspective view of a second shaft according to the present application;
FIG. 7 is a cross-sectional perspective view of a second shaft according to the present application;
FIG. 8 is a cross-sectional elevation view of a second shaft of the present application;
FIG. 9 is a diagram showing the second shaft according to the present application in comparison with the related art.
Detailed Description
For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the related art, the original disc and the first rotating shaft are formed into an integral part through die casting, but because the diameter of the first rotating shaft is smaller, the precision of the first rotating shaft is difficult to ensure in the die casting process to meet the requirement, so that if the first rotating shaft is required to be prepared into the required size specification, the manufacturing difficulty is high, and because the first rotating shaft is formed through die casting integrally, the strength of the first rotating shaft is limited, especially the connection position of the first rotating shaft and the original disc is easy to break.
The application provides a motor transmission structure, as shown in figures 1 to 9, which comprises a shell 1, an output shaft 2, an input shaft 3 and a rotary table 4, wherein the shell 1 is provided with an inner cavity 101, the output shaft 2 and the input shaft 3 are at least partially positioned in the inner cavity 101, the rotary table 4 is positioned in the inner cavity 101, and the rotary table 4 is in rotary connection with the shell 1; wherein, output shaft 2 and carousel 4 equipment fixed fit, motor drive structure include internal gear 5, and internal gear 5 is connected with carousel 4, and internal gear 5 and input shaft 3 transmission fit. The turntable 4 and the internal gear wheel 5 form part of a transmission member.
The output shaft 2 is used for being connected with a carrier which is externally required to be powered and input, the input shaft 3 is used for being connected with an output end of a motor, the motor rotates to drive the input shaft 3 to rotate, the input shaft 3 drives the turntable 4 which is matched with the input shaft in a transmission manner to rotate, and the turntable 4 is fixedly matched with the output shaft 2 in an assembling manner, so that the output shaft 2 and the carrier connected with the output shaft 2 can be driven to rotate together, and the transmission of motor power is realized.
The output shaft 3 and the rotary table 4 are assembled and fixed together, and are two independent components, so that the output shaft and the rotary table can be assembled after being respectively processed, and the processing difficulty is greatly reduced. The specific assembly method is as follows: providing a pre-finished output shaft 2 and a turntable 4, wherein the turntable 4 comprises a central portion 401, the central portion 401 having a mounting hole 402; milling out knurls 202 on the circumferential side wall of one end part of the output shaft 2, and press-fitting the end part of the output shaft 2 with the knurls 202 into the mounting hole 402 of the central part 401; alternatively, a pre-finished output shaft 2 is provided, knurls 202 are milled in the circumferential side wall of one end of the output shaft 2, one end of the output shaft 2 with the knurls 202 is placed in a corresponding position of a turntable mold in which the turntable 4 is cast.
In the first processing mode, the output shaft 2 is a machined part, the output shaft 2 is formed by casting through a die and then is obtained by a finish machining mode, and the precision of the output shaft 2 is easy to control; in the processing of the turntable 4, the turntable 4 is molded by casting through a mold, and the turntable 4 comprises a central part 401 positioned at the central position of the turntable 4, the central part 401 is also provided with a mounting hole 402, or the general shape of the turntable 4 is cast firstly, then the central part 401 and the mounting hole 402 are milled by post-finishing, no matter in that way, the processing difficulty is greatly reduced because the output shaft 2 is not required to be integrally cast, then one end of the output shaft 2 is pressed into the mounting hole 402, and the strength of the output shaft 2 is also improved compared with that of the output shaft and the turntable which are integrally molded because the output shaft 2 at least partially extends into the mounting hole 402.
In the second processing mode, the output shaft 2 is manufactured through the die in advance, and then the output shaft 2 is placed at the corresponding position in the turntable die, so that the output shaft 2 and the turntable 4 can be directly assembled into a whole in the process of casting the turntable 4, the press fitting process in the first processing mode is omitted, and the output shaft 2 is tightly matched with the turntable 3 due to the knurled arrangement of the output shaft 2.
As shown in fig. 2 to 5, the output shaft 2 comprises a crimp segment 201, the turntable 4 comprises a central portion 401, the central portion 401 having a mounting hole 402, the crimp segment 201 being at least partially located within the mounting hole 402.
In addition, the output shaft 2 comprises a knurl 202, the knurl 202 being located at least partially on the circumferential side wall of the crimp segment 201, the central portion 401 comprising a connecting inner wall 403, the mounting hole 402 being located in the connecting inner wall 403, the knurl 202 being in an interference fit with the connecting inner wall 403.
In a specific connection relationship between the output shaft 2 and the turntable 4, the output shaft is formed by connecting the crimping section 201 with the inner side wall of the mounting hole 402, the knurling 202 is also positioned on the circumferential side wall of the crimping section 201, the knurling 202 is milled by a milling cutter, and the knurling 202 extends out of the circumferential side wall of the crimping section 201 in the radial direction of the output shaft, so that interference fit with the inner side wall of the mounting hole 402 is formed, and the connection of the output shaft and the turntable is tighter.
The output shaft 2 comprises an external connection section 203, the external connection section 203 is connected with one end of the crimping section 201, at least part of the external connection section 203 extends out of the shell 1, and the external connection section 203 is used for being connected with an external carrier; the circumscribing segment 203, crimping segment 201 and knurling 202 are one piece.
When the output shaft 2 is specifically processed, casting molding is firstly carried out, then knurling 202 is milled at the circumferential side wall of the crimping section 201, and the processing is simple and convenient, and the precision required by the output shaft 2 is also convenient to control.
As shown in fig. 2 to 3 and 5, the turntable 4 includes a plate portion 404 and a wall portion 405, the wall portion 405 extending from an edge of the plate portion 404 to one side in a thickness direction of the plate portion 404; the plate portion 404 is connected to the circumferential side wall of the center portion 401; the central portion 401, the plate portion 404 and the wall portion 405 are one piece. The processing mode is also formed by integral casting or finish machining, and is not repeated herein.
1-2, the housing 1 comprises an upper housing cover 102 and a lower housing cover 103, wherein the upper housing cover 102 is provided with a first hole part, the first hole part is provided with a first hole 104, the first hole 104 penetrates through the upper housing cover 102 in the thickness direction of the upper housing cover 102, and the first hole part comprises a first inner hole wall 105; the motor transmission structure comprises a first bearing 106, wherein the first bearing 106 is at least partially positioned in the first hole 104, the outer ring of the first bearing 106 is at least partially connected with the first inner hole wall 105, and the inner ring of the first bearing 106 is at least partially connected with one end part of the central part 401; the motor transmission structure comprises a ring boss 107 and a second bearing 108, wherein the ring boss 107 is positioned in the inner cavity 101, the ring boss 107 is connected with the lower shell cover 103, the second bearing 108 is at least partially positioned in the ring boss 107, the outer ring of the second bearing 108 is at least partially connected with the inner side wall of the ring boss 107, and the inner ring of the second bearing 108 is at least partially connected with the other end part of the central part 401.
The casing 1 mainly plays the effect of protection, prevents that the outside from causing the influence to the transmission between output shaft 2, input shaft 3 and the carousel 4, and on the other hand casing 1 also plays the effect of connection support carousel 4, provides the position that carousel 4 connects, and carousel 4 rotates with the protruding 107 of ring on last cap 102 and the lower cap 103 respectively through first bearing 106 and second bearing 108, and when input shaft 3 and carousel 4 carry out the transmission, the position of carousel 4 relative casing 1 is relatively fixed, has improved the stability of transmission, also makes the output shaft 2 fixed with carousel 4 equipment when being driven the rotation, rotates also more stably.
As shown in fig. 2 and fig. 6 to 9, the input shaft 3 includes a main body 301 and a main tooth portion 302, the main tooth portion 302 being connected to one end of the main body 301; the lower case cover 103 has a second hole portion having a second hole 109, the second hole portion including a second inner hole wall 110, the second hole 109 penetrating the lower case cover 103 in the thickness direction of the lower case cover 103; the motor transmission structure comprises an auxiliary bearing, the auxiliary bearing is at least partially positioned in the second hole 109, the outer ring of the auxiliary bearing is connected with the second inner hole wall 110, and the inner ring of the auxiliary bearing is connected with the main body 301.
The input shaft 3 connected with the output end of the motor is also rotationally connected with the lower shell cover 103 through an auxiliary bearing, so that the input shaft 3 is convenient for transmission.
Wherein, in one embodiment, the turntable 4 and the internal gear 5 are integrated; the machining mode is that the wall part 405 of the turntable 4 is integrally cast or finished, and teeth are milled on the side wall of the wall part 405 by a milling cutter in the radial direction of the turntable 4, so that the teeth are meshed with the main tooth part 302 to realize transmission.
In another embodiment, the motor transmission structure includes an internal gear 5, and in the radial direction of the turntable 4, the side wall of the wall portion 405 near the center of the turntable 4 is in interference fit with the internal gear 5, and the main tooth portion 302 is meshed with the internal gear 5. The internal gear 5 is press-fitted into the turntable 4 to form an interference fit with the wall portion 405, in this embodiment, milling of the wall portion 405 in the turntable 4 is not required, so that the difficulty of processing is reduced, and the strength of the wall portion 405 is also maintained, because if the secondary teeth are milled on the side wall of the wall portion 405, the strength of the wall portion 405 is lower than that of the internal gear 5.
Wherein the plate portion 404 has a hole 406, and the hole 406 penetrates the plate portion 404 in the thickness direction of the plate portion 404. The holes 406 are formed to reduce the weight of the whole turntable 4 and reduce the loss of kinetic energy in the transmission process.
In the motor transmission structure, an output shaft 2 is in transmission fit with an input shaft 3; the input shaft 3 includes a main body 301 and a main tooth portion 302, the main tooth portion 302 being connected to one end portion of the main body 301; wherein, input shaft 3 includes connecting rib 303, and main tooth portion 302 includes body portion 305 and tooth 306, and tooth 306 is located the circumference lateral wall of body portion 305, and body 301 and tooth 306 all are connected with connecting rib 303.
In the related art, when the input shaft is connected with the bearing, in order to achieve the effect of limiting conveniently, when the input shaft is cast, the boss 6 is integrally cast on the input shaft, as shown in the figure below in fig. 9, the clearance groove 7 is reserved on the circumferential side wall close to the boss 6, then one end part of the input shaft is milled to process teeth, the clearance groove 7 can enable the milling cutter not to mill the boss 6 during tooth processing, the teeth are more vivid and independent, and the gear is convenient to mesh with the internal gear 5 or the auxiliary teeth for transmission. However, this has the problem that the provision of the relief 7 makes the overall length of the input shaft longer in order to prevent milling to the boss 6, and that the strength of the teeth is also reduced since only the tooth root is connected to the circumferential side wall of the body. (it is to be noted that in the description of the related art in the present application, the feature names employed for easy understanding are the same as those in the present application, the distinction is not facilitated, the reference numerals are not added, but the positions referred to are the same.)
In the application, the main body 301 and the teeth 306 are connected with the connecting ribs 303, the tooth 306 is connected with the circumferential side wall of the main body 305 at the root part of the tooth, and one end of the tooth 306 is connected with the main body 301 through the connecting ribs 303, so that the strength of the tooth 306 is improved, and the strength and the stability of the input shaft 3 are better.
Wherein as shown in fig. 6 to 9, the input shaft 3 includes a reinforcing section 304, and the main body 301 and the body portion 305 are connected to the reinforcing section 304, the reinforcing section 304 being located between two adjacent connecting ribs 303; the main body 301, the body portion 305, the connecting rib 303, the reinforcing section 304 and the teeth 306 are one piece.
The reinforcing section 304 further improves the strength of the connection between the body portion 305 and the main body 301, and the reinforcing section 304 located between two adjacent connecting ribs 303 also reinforces the connecting ribs 303, so that the overall strength of the input shaft 3 is improved.
The input shaft 3 in the application cancels the setting of the boss 6 in the related art, and in order to realize the limit function with the auxiliary bearing, the input shaft 3 in the application is provided with the clamping groove 307, the motor transmission structure comprises a clamping spring and the auxiliary bearing, the clamping spring is at least partially positioned in the clamping groove 307, the auxiliary bearing is connected with the main body 301, and the clamping spring is used for limiting the auxiliary bearing. The clamping groove 307 is used for installing the clamping spring and providing a point of connection, and on the other hand, compared with the arrangement of the boss 6 in the related art, the clamping groove 307 further lightens the weight of the input shaft 3, thereby reducing the kinetic energy loss in the transmission process.
In one embodiment, the input shaft 3 has two detents 307, the two detents 307 being located on the circumferential side wall of the body 301 and the auxiliary bearing being located between the two detents 307.
In another embodiment, the input shaft 3 has two clamping grooves 307, one clamping groove 307 is located in the main body 301, the other clamping groove 307 is located in the connecting rib 303, and the auxiliary bearing is located between the two clamping grooves 307.
The clamping groove 307 is provided on the connecting rib 303, so that the overall length of the input shaft 3 is reduced, the overall strength of the input shaft 3 is improved, and the longer the length of the input shaft 3 is, the worse the overall strength is, and the more fracture is likely to occur.
In addition, after the turntable 4 is interference fitted with the internal gear 5, the internal gear 5 is meshed with the teeth 306.
Wherein the effective tooth length of the teeth 306 is greater than the effective tooth length of the internal gear 5, and the effective tooth length difference between the teeth 306 and the internal gear 5 is d, wherein d is in the range of: d is more than 0mm and less than or equal to 2mm. In the upper drawing of fig. 9, L is the effective tooth length of the tooth 306, which refers to the length of the transmission part capable of meshing with other teeth, and the effective tooth length of the tooth 306 is longer than the effective tooth length of the internal gear 5, so as to prevent the internal gear 5 from being completely meshed with the tooth 306 due to tolerance in the production process, and the tooth 306 is convenient to assemble, so that the length of the tooth 306 completely covers the length of the internal gear 5, and the transmission effect is better.
In the height direction of the housing 1, the directions in which the output shaft 2 and the input shaft 3 protrude out of the housing 1 are opposite.
As is apparent from the drawings and the foregoing description, in the present application, the axes of the output shaft 2 and the input shaft 3 are not on the same straight line, and the output shaft 2 is connected to an external carrier, and the input shaft 3 is connected to an output section of a motor, if the directions of the output shaft 2 and the input shaft 3 extending out of the housing 1 are the same, the positions of the external carrier and the motor may interfere, and in order to prevent the interference, the dimensions of the housing 1 and the turntable 4 need to be enlarged. The opposite direction of the output shaft 2 and the input shaft 3 extending out of the housing 1 can reduce the overall size of the motor transmission structure in the application.
In addition, when the input shaft 3 is processed, the specific steps are as follows, providing a metal member, die casting or milling the metal member to form the main body 301 and the main tooth portion 302, milling the teeth 306 on the circumferential side wall of the main tooth portion 302 by a milling cutter along the axial direction of the main body 301 until the effective tooth length of the teeth 306 is L; in milling the teeth 306 to the effective tooth length, the milling cutter mills out the reinforcement sections 304 between the main body 301 and the main tooth 302 and the connecting ribs 303 between adjacent reinforcement sections 304.
The above embodiments are only for illustrating the present application and not for limiting the technical solutions described in the present application, and the understanding of the present specification should be based on the description of directionality such as "front", "rear", "left", "right", "upper", "lower", etc. by the skilled person, only for describing the relationship between the objects, and not for limiting the nature, "a plurality" means at least two or more.
Although the application has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that the modifications and equivalents may be made thereto without departing from the spirit and scope of the application as defined in the appended claims.

Claims (10)

1. The motor transmission structure is characterized by comprising a shell (1), an output shaft (2), an input shaft (3) and a transmission part, wherein the shell (1) is provided with an inner cavity (101), the output shaft (2) is at least partially positioned in the inner cavity (101), and the input shaft (3) is at least partially positioned in the inner cavity (101); the output shaft (2) is connected with one part of the transmission member, and the input shaft (3) is connected with the other part of the transmission member; the input shaft (3) comprises a main body (301) and a main tooth part (302), wherein the main tooth part (302) is connected with one end part of the main body (301);
the input shaft (3) comprises a connecting rib (303), the main tooth part (302) comprises a body part (305) and teeth (306), the teeth (306) are positioned on the circumferential side wall of the body part (305), and the main body (301) and the teeth (306) are connected with the connecting rib (303).
2. Motor transmission according to claim 1, characterized in that the input shaft (3) comprises a reinforcing section (304), the main body (301) and the body portion (305) being connected to the reinforcing section (304), the reinforcing section (304) being located between two adjacent connecting ribs (303);
the main body (301), the body portion (305), the connecting rib (303), the reinforcing section (304) and the teeth (306) are an integral piece.
3. Motor transmission according to claim 2, characterized in that the input shaft (3) has a clamping groove (307), the motor transmission comprising a clamping spring and an auxiliary bearing, the clamping spring being at least partially located in the clamping groove (307), the auxiliary bearing being connected with the main body (301), the clamping spring being used for limiting the auxiliary bearing.
4. A motor transmission according to claim 3, characterized in that the input shaft (3) has two said clamping grooves (307), two said clamping grooves (307) being located on the circumferential side wall of the main body (301), the auxiliary bearing being located between two said clamping grooves (307).
5. A motor transmission according to claim 3, characterized in that the input shaft (3) has two said clamping grooves (307), one of said clamping grooves (307) being located in the main body (301), the other clamping groove (307) being located in the connecting rib (303), the auxiliary bearing being located between the two clamping grooves (307).
6. Motor transmission according to claim 2, characterized in that the transmission comprises a master disc (4) and an internal gear (5), the master disc (4) and the internal gear (5) being located in the inner cavity (101); the primary disc (4) is connected with the output shaft (2), the primary disc (4) is in interference fit with the internal gear (5), and the internal gear (5) is meshed with the teeth (306).
7. The motor transmission structure according to claim 6, characterized in that the effective tooth length of the teeth (306) is longer than the effective tooth length of the internal gear (5), the effective tooth length difference of the teeth (306) and the internal gear (5) being d, wherein d ranges from: d is more than 0mm and less than or equal to 2mm.
8. A motor drive according to claim 3, characterized in that the motor drive comprises a master disc (4), a first bearing (106), a second bearing (108) and an annular protrusion (107), the housing (1) comprising an upper cover (102) and a lower cover (103);
the annular protrusion (107) is connected with the lower shell cover (103), the second bearing (108) is at least partially positioned in the annular protrusion (107), the upper shell cover (102) is provided with a first hole (104), the first bearing (106) is at least partially positioned in the first hole (104), the first bearing (106) and the second bearing (108) are connected with the original disc (4), and the output shaft (2) at least partially extends out of the shell (1);
the lower housing cover (103) is provided with a second hole (109), the auxiliary bearing is at least partially positioned in the second hole (109), and the input shaft (3) at least partially extends out of the housing (1).
9. Motor transmission according to claim 8, characterized in that in the height direction of the housing (1) the direction in which the output shaft (2) and the input shaft (3) protrude out of the housing (1) is opposite.
10. A manufacturing method of a motor transmission structure is characterized in that,
providing a metal member, die casting or milling the metal member out of the main body (301) and the main tooth portion (302);
milling teeth (306) on the circumferential side wall of the main tooth part (302) along the axial direction of the main body (301) by a milling cutter until the effective tooth length of the teeth (306) is L;
when milling the teeth (306) to an effective tooth length, a milling cutter mills out reinforcement sections (304) between the main body (301) and the main tooth portion (302) and connecting ribs (303) between adjacent reinforcement sections (304).
CN202310466093.6A 2023-04-24 2023-04-24 Motor transmission structure and manufacturing method thereof Pending CN116804417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310466093.6A CN116804417A (en) 2023-04-24 2023-04-24 Motor transmission structure and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310466093.6A CN116804417A (en) 2023-04-24 2023-04-24 Motor transmission structure and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN116804417A true CN116804417A (en) 2023-09-26

Family

ID=88080093

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310466093.6A Pending CN116804417A (en) 2023-04-24 2023-04-24 Motor transmission structure and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN116804417A (en)

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