CN106567918A - Gear, machining method thereof, gear shaft, gear transmission structure and assembling method - Google Patents
Gear, machining method thereof, gear shaft, gear transmission structure and assembling method Download PDFInfo
- Publication number
- CN106567918A CN106567918A CN201610915423.5A CN201610915423A CN106567918A CN 106567918 A CN106567918 A CN 106567918A CN 201610915423 A CN201610915423 A CN 201610915423A CN 106567918 A CN106567918 A CN 106567918A
- Authority
- CN
- China
- Prior art keywords
- gear
- section
- shaft
- spline
- hole
- 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
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003754 machining Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003672 processing method Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
- F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a gear, a machining method of the gear, a gear shaft, a gear transmission structure and an assembling method. The gear is provided with a gear shaft hole, and the gear shaft hole is divided into a first hole section, a second hole section and a third hole section in the axial direction, wherein the inner diameter of the first hole section is smaller than that of the second hole section, a first spline is formed on the second hole section, and the inner diameter of the third hole section is larger than that of the second hole section. The gear shaft is divided into a first shaft section, a second shaft section and a third shaft section in the axial direction. The outer diameter of the first shaft section is smaller than that of the second shaft section, a second spline is formed on the second shaft section, and the outer diameter of the third shaft section is larger than that of the second shaft section. By means of matching between the first and third hole sections and the first and third shaft sections and assisted matching between the first spline and the second spline, positioning and transmission are achieved, and influences of assembly errors can be reduced. The first and third hole sections and the first and third shaft sections are each in a cylindrical shape, the machining precision can be easily controlled, and bad influences brought by machining precision can be reduced.
Description
Technical Field
The invention relates to the field of mechanical parts, in particular to a gear and a machining method thereof, a gear shaft, a gear transmission structure and an assembling method.
Background
The gear and the gear shaft are usually designed in the design of the gear box through spline connection, and the spline connection can also be divided into several different modes:
(1) the spline flank centering mode, as shown in fig. 1, is that the positioning and transmission matching of the gear and the gear shaft are realized by adopting the matching of the inner spline and the outer spline flank.
(2) The spline large diameter centering mode, as shown in fig. 2, namely, the spline large diameter matching is adopted to realize the centering. The large diameter of the internal spline is matched with that of the external spline, so that the positioning and transmission matching of the gear and the gear shaft is realized.
(3) The spline minor diameter centering mode, as shown in fig. 3, is that the spline minor diameter fit is adopted to realize the positioning and transmission fit of the gear and the gear shaft.
In the three matching modes, the splines on the gear shaft and the internal splines on the gear shaft hole are matched, namely, the positioning and the transmission are completed through the two splines, but when the gear and the gear shaft are manufactured, the positioning and the transmission of the gear and the gear shaft are influenced by the manufacturing precision of the splines, particularly the splines on the gear, and the assembling error in the assembling process, so that the positioning precision and the stability of the positioning and the transmission are influenced.
Disclosure of Invention
The invention aims to provide a gear, a processing method thereof, a gear shaft, a gear transmission structure and an assembling method, which overcome the defects of the prior art, improve the positioning precision and the transmission stability, and can reduce errors in the assembling process.
The gear provided by the invention is provided with a gear shaft hole, and the gear shaft hole is divided into a first hole section, a second hole section and a third hole section in the axial direction; wherein the first bore section has an inner diameter less than the inner diameter of the second bore section; a first spline is formed on the second hole section; the third bore section has an inner diameter greater than an inner diameter of the second bore section.
The gear wheel as described above, wherein a relief groove is formed between the first bore section and the second bore section; a step surface is formed between the third bore section and the second bore section.
The gear of above, wherein the first spline is an internal spline; and/or the first spline is an involute spline.
The invention also provides a gear shaft which is divided into a first shaft section, a second shaft section and a third shaft section in the axial direction; wherein an outer diameter of the first shaft section is less than an outer diameter of the second shaft section; a second spline is formed on the second shaft section; the third shaft section has an outer diameter greater than an outer diameter of the second shaft section.
The gear shaft as described above, wherein a step surface is formed between the first shaft section and the second shaft section; a step surface is formed between the second shaft section and the third shaft section.
The gear shaft as described above, wherein the second splines are external splines; and/or the second spline is an involute spline.
The present invention further provides a gear transmission structure, comprising: the gear and the gear shaft are sleeved in the gear shaft hole; wherein the first bore section and the first shaft section are in an interference fit; the third bore section and the third shaft section are in interference fit; the first spline of the second hole section is inserted with the second spline of the second shaft section in a side centering mode and is in interference fit.
In the assembling method for the gear transmission structure, the gear shaft is sleeved in the gear shaft hole by heating the gear.
Finally, the invention provides a method for processing the gear, which is characterized in that the gear pitch circle of the gear is taken as a reference, and the first spline, the first hole section and the third hole section are processed by clamping once; and machining the gear teeth of the gear by taking the small diameter of the first spline as a reference.
According to the gear, the gear shaft, the gear transmission structure and the gear processing method, the first spline and the second spline can be matched in an auxiliary manner through the matching of the first hole section and the first shaft section and the matching of the third hole section and the third shaft section, so that the positioning and the transmission are realized, and the influence of assembly errors can be reduced. In addition, the first hole section, the first shaft section, the third hole section and the third shaft section are cylindrical, machining precision is easy to control, and therefore adverse effects caused by machining precision can be reduced.
Drawings
FIG. 1 is a cross-sectional view of a gear of the present invention;
FIG. 2 is a cross-sectional view of the gear shaft of the present invention;
fig. 3 is a sectional view of the gear transmission structure.
Description of reference numerals:
1-a gear; 11-a first bore section; 12-a second bore section; 13-a third pore section; 121-a first spline; 122-third spline; 2-a gear shaft; 21-a first shaft section; 22-a second shaft section; 23-a third shaft section; 221-a second spline; 24-a first exposed portion; 25-second exposed portion.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The invention provides a gear, a processing method thereof, a gear shaft, a gear transmission structure and an assembling method, wherein the gear and the gear shaft can be used in a matched mode, and the gear transmission structure can be formed after the gear and the gear shaft are matched, and the gear transmission structure are respectively described below.
The gears are explained first.
Referring to fig. 1, a gear 1 includes a gear shaft hole (hereinafter referred to as a hole) for cooperating with a gear shaft to position and transmit the gear (transmission here refers to the power source of a driving wheel, i.e., the driving wheel is driven by the gear shaft to rotate). Further, the hole is divided into three parts in the axial direction, namely a first hole, 11, a second hole section 12 and a third hole section 13, wherein the inner diameter of the first hole section 11 is smaller than that of the second hole section 12; the second bore section 12 is formed with a first spline 121; the third bore section 13 has an inner diameter greater than the inner diameter of the second bore section 12. The first hole section 11, the second hole section 12, and the third hole section 13 are not necessarily three parts equally divided.
The inner diameters of the three parts are different from each other, but in general, each part respectively keeps a fixed inner diameter value, and of course, because the second hole section is provided with the first spline, the inner diameter of the second hole section can be influenced by the spline, and at the moment, the second hole section can keep a fixed value at least when the values of the maximum inner diameter and the minimum inner diameter are kept. It is to be noted that the change in the inner diameter of the portion required for the processing such as the relief groove is not within the range discussed above. That is, each part does not have the shape of a cone, a trapezoid, or the like, and preferably, a radial cross section is formed at any position in the axial direction of the first hole section, and the cross section shape of each position is consistent.
In a preferred embodiment, a relief is formed between the first bore section 11 and the second bore section 12; a step surface is formed between the third bore section 13 and the second bore section 12. The first splines 121 are internal splines; and/or the first spline is an involute spline.
Alternatively, the first spline may be formed by sequentially machining with a spline broach, and a spline may also be formed inside the first hole segment, which is referred to as a third spline 122 for distinction, and the third spline 122 may be formed for convenience in manufacturing the first spline and is not directly used for transmission, and details will be described below.
The gear shaft is explained below.
In another aspect of the present invention, there is provided a gear shaft 2 divided in an axial direction into a first shaft section 21, a second shaft section 22 and a third shaft section 23; wherein the outer diameter of the first shaft section 21 is smaller than the outer diameter of the second shaft section 22; the second shaft section 22 is formed with a second spline; the third shaft section 23 has an outer diameter which is larger than the outer diameter of the second shaft section 22.
It will be appreciated that the gear shaft is adapted to the gear housing so that each shaft section has a profile adapted to each bore section, e.g. each portion of the bore section maintains a fixed inner diameter value and, therefore, each shaft section of the gear shaft also maintains a fixed outer diameter value. Correspondingly, a step surface is formed between the first shaft section 21 and the second shaft section 22; a step surface is formed between the second shaft segment 22 and said third shaft segment 23.
It should be noted that after the gear shaft is engaged with the gear, the front end of the first shaft section 21 of the gear shaft has a portion exposed from the gear shaft hole, referred to as a first exposed portion 24, which may not belong to the first shaft section, and likewise, the rear end of the third shaft section also has a portion exposed from the gear shaft hole, referred to as a second exposed portion 25, which may not belong to the third shaft section.
Preferably, the second spline is an external spline; and/or the second spline is an involute spline.
In another aspect, the present invention provides a gear transmission structure (hereinafter referred to as a transmission structure), which includes the above-mentioned gear and the above-mentioned gear shaft, wherein the gear shaft is sleeved in the gear shaft hole, and the first hole section is in interference fit with the first shaft section; the third hole section is in interference fit with the third shaft section; the first spline of the second hole section is inserted with the second spline of the second shaft section in a side centering mode and is in interference fit.
In the existing transmission structure, a spline on a shaft is directly matched with a spline in a gear shaft hole, the spline is limited by the manufacturing precision of the spline, particularly the spline on a gear, and the assembly error in the assembly process, the positioning and the transmission of the gear and the gear shaft are influenced, so that the positioning precision and the stability of the transmission are influenced. Through the cooperation of first hole section and first shaft part in this application to and the cooperation of third hole section and third shaft part, supplementary first spline and the cooperation of second spline realize location and transmission, can reduce assembly error's influence. In addition, the first hole section, the first shaft section, the third hole section and the third shaft section are cylindrical, machining precision is easy to control, and therefore adverse effects caused by machining precision can be reduced.
Further, a third spline may be formed in the first hole section, and the third spline may be directly used for interference fit with the first shaft section to achieve positioning, but not used for transmission, and not used for cooperation with the second spline.
In order to realize the matching, the assembly method of the gear transmission structure can realize the sleeving of the gear shaft in the gear shaft hole by heating the gear. And the interference fit at the positions can be fashionable by using an overheating mode.
Finally, the invention also provides a processing method of the gear, which is characterized in that the gear pitch circle of the gear is taken as a reference, and the first spline, the first hole section and the third hole section are processed by clamping once; and machining the gear teeth of the gear by taking the small diameter of the first spline as a reference.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (9)
1. A gear having a gear shaft hole, characterized in that,
the gear shaft hole is divided into a first hole section, a second hole section and a third hole section in the axial direction; wherein,
the inner diameter of the first bore section is smaller than the inner diameter of the second bore section;
a first spline is formed on the second hole section;
the third bore section has an inner diameter greater than an inner diameter of the second bore section.
2. The gear according to claim 1,
a relief groove is formed between the first hole section and the second hole section;
a step surface is formed between the third bore section and the second bore section.
3. The gear according to claim 1,
the first spline is an internal spline; and/or the presence of a gas in the gas,
the first spline is an involute spline.
4. A gear shaft is characterized in that,
the gear shaft is divided into a first shaft section, a second shaft section and a third shaft section in the axial direction; wherein,
the outer diameter of the first shaft section is smaller than the outer diameter of the second shaft section;
a second spline is formed on the second shaft section;
the third shaft section has an outer diameter greater than an outer diameter of the second shaft section.
5. The gear shaft of claim 4,
a step surface is formed between the first shaft section and the second shaft section;
a step surface is formed between the second shaft section and the third shaft section.
6. The gear shaft of claim 4,
the second spline is an external spline; and/or the presence of a gas in the gas,
the second spline is an involute spline.
7. A gear transmission structure, comprising:
the gear of any of claims 1-3, and the gear shaft of any of claims 4-6, the gear shaft being sleeved in the gear shaft bore; wherein,
the first bore section and the first shaft section are in interference fit;
the third bore section and the third shaft section are in interference fit;
the first spline of the second hole section is inserted with the second spline of the second shaft section in a side centering mode and is in interference fit.
8. An assembling method for the gear transmission structure according to claim 7,
the gear shaft is sleeved in the gear shaft hole by heating the gear.
9. A method of manufacturing a gear according to any one of claims 1 to 3,
machining the first spline, the first hole section and the third hole section by clamping once by taking the gear pitch circle of the gear as a reference;
and machining the gear teeth of the gear by taking the small diameter of the first spline as a reference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610915423.5A CN106567918A (en) | 2016-10-20 | 2016-10-20 | Gear, machining method thereof, gear shaft, gear transmission structure and assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610915423.5A CN106567918A (en) | 2016-10-20 | 2016-10-20 | Gear, machining method thereof, gear shaft, gear transmission structure and assembling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106567918A true CN106567918A (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610915423.5A Pending CN106567918A (en) | 2016-10-20 | 2016-10-20 | Gear, machining method thereof, gear shaft, gear transmission structure and assembling method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106567918A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488747A (en) * | 2017-09-12 | 2019-03-19 | 现代自动车株式会社 | Gear assembly |
| CN110056568A (en) * | 2018-01-19 | 2019-07-26 | 操纵技术Ip控股公司 | Spline element and method |
| KR20200014819A (en) * | 2017-06-28 | 2020-02-11 | 발레오 에뀝망 엘렉뜨리끄 모떼르 | Car rotary electromechanical drive assembly |
| CN114643007A (en) * | 2022-02-22 | 2022-06-21 | 深圳市瑞沃德生命科技有限公司 | Transmission device, motor and biological sample preparation device |
| WO2024105254A1 (en) * | 2022-11-17 | 2024-05-23 | New H Powertrain Holding, S.L.U | Reduction gear system having hybrid assembly |
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| CN1410309A (en) * | 2001-09-29 | 2003-04-16 | 马福生 | Once cold extrusion shaping method of automobile power steering gear jacketed screw and its multiple key and oil distributing groove |
| CN202971750U (en) * | 2012-12-03 | 2013-06-05 | 江苏威鹰机械有限公司 | Precision forging piece of mechanical transmission toothed ring of double-surface gear |
| CN103307124A (en) * | 2013-07-03 | 2013-09-18 | 中国航空动力机械研究所 | High-speed rotor positioning link structure |
| CN205101512U (en) * | 2015-11-18 | 2016-03-23 | 杭州罗威实业有限公司 | Marine gearbox intermediate gear |
| JP2016059931A (en) * | 2014-09-16 | 2016-04-25 | トヨタ自動車株式会社 | Manufacturing method of gear part |
-
2016
- 2016-10-20 CN CN201610915423.5A patent/CN106567918A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410309A (en) * | 2001-09-29 | 2003-04-16 | 马福生 | Once cold extrusion shaping method of automobile power steering gear jacketed screw and its multiple key and oil distributing groove |
| CN202971750U (en) * | 2012-12-03 | 2013-06-05 | 江苏威鹰机械有限公司 | Precision forging piece of mechanical transmission toothed ring of double-surface gear |
| CN103307124A (en) * | 2013-07-03 | 2013-09-18 | 中国航空动力机械研究所 | High-speed rotor positioning link structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20200014819A (en) * | 2017-06-28 | 2020-02-11 | 발레오 에뀝망 엘렉뜨리끄 모떼르 | Car rotary electromechanical drive assembly |
| KR102326798B1 (en) * | 2017-06-28 | 2021-11-15 | 발레오 에뀝망 엘렉뜨리끄 모떼르 | Automotive Rotating Electromechanical Drive Assemblies |
| CN109488747A (en) * | 2017-09-12 | 2019-03-19 | 现代自动车株式会社 | Gear assembly |
| CN110056568A (en) * | 2018-01-19 | 2019-07-26 | 操纵技术Ip控股公司 | Spline element and method |
| CN110056568B (en) * | 2018-01-19 | 2022-06-03 | 操纵技术Ip控股公司 | Splined component assembly and method |
| CN114643007A (en) * | 2022-02-22 | 2022-06-21 | 深圳市瑞沃德生命科技有限公司 | Transmission device, motor and biological sample preparation device |
| WO2024105254A1 (en) * | 2022-11-17 | 2024-05-23 | New H Powertrain Holding, S.L.U | Reduction gear system having hybrid assembly |
| FR3142229A1 (en) * | 2022-11-17 | 2024-05-24 | Renault | Hybrid assembly gear motor assembly |
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| CB03 | Change of inventor or designer information |
Inventor after: Wang Tongkui Inventor after: Guo Yingqing Inventor after: Wang Wenhao Inventor before: Tang Qing Inventor before: Guo Yingqing Inventor before: Wang Wenhao |
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Application publication date: 20170419 |
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