CN108708960A - A kind of unidirectional loads gear - Google Patents
A kind of unidirectional loads gear Download PDFInfo
- Publication number
- CN108708960A CN108708960A CN201810930426.5A CN201810930426A CN108708960A CN 108708960 A CN108708960 A CN 108708960A CN 201810930426 A CN201810930426 A CN 201810930426A CN 108708960 A CN108708960 A CN 108708960A
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- China
- Prior art keywords
- layer
- gear
- gear teeth
- hard surface
- stiffening
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- 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.)
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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
- 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
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a kind of unidirectional loads gears, including gear, the gear includes end face and the gear teeth that are arranged on end face, it is provided with tooth socket between the gear teeth, the gear teeth include the stiffening layer for being located at the supporting layer of tooth socket side and being arranged on supporting layer for load, the stiffening layer includes the high hard surface layer for connecting the hardened layer of supporting layer and being arranged on hardened layer, and the high hard surface layer is located at the other side of tooth socket；The thickness of the supporting layer is more than hardened layer, and the thickness of the hardened layer is more than high hard surface layer.The gear structure of the present invention is simple, and the strength of gear teeth is high, wearability is good, and service life is long, gear high load capacity, effectively prevent the stiffening layer deflection of gear tooth excessive, and preventing high hard surface layer from embrittlement or fatigue resistance occurs reduces.
Description
Technical field
The present invention relates to field of gears more particularly to a kind of unidirectional loads gears.
Background technology
It is well known that gear is parts crucial in mechanical equipment, it is widely used in automobile, aircraft, tank, wheel
The industrial circles such as ship.It has many advantages, such as that transmission is accurate, compact-sized service life is long.Gear drive be in modern age machine most
A kind of common mechanical oscillation are a kind of important forms for transmitting machine power and movement, are engineering goods important foundation parts.
It has power bracket big compared with the machinery such as band, chain, friction, hydraulic pressure, and transmission efficiency, peripheral speed are high, transmission ratio is accurate
The series of advantages such as really, service life is long, dimensional structure is small.Therefore it has become the indispensable transmission of many engineering goods
The maximum driving form of proportion in component and machine.Due to prominent position of the gear in industrial development, make gear
It is acknowledged as the pulling that a kind of industrialized symbol has benefited from automobile, wind-powered electricity generation, nuclear power industry in recent years, automobile gear processing machine
Bed, the demand growth of Big sized gear machining tool are very dazzling.It is reported that with the increase of gear cutting machine demand, closely
The enterprise for being related to gear cutting machine manufacture over year is also increasing.Either traditional automobile, ship, aerospace, military project
Etc. industries, still the industries such as high ferro emerging in recent years, railway, electronics, all propose the fast development of Machine Tool Industry
Pressing needs propose gear cutting machine manufacturer new requirement.
In rotation, actual gear load is different usual gear, and often based on one-way abrasion, gear rises wear-resisting
Effect is that it quenches the depth of layer, quenches thickness, and then gear is wear-resisting, still, quenches the too thick easy embrittlement of layer.Many institute's weeks
Know, the quenching layer depth of gear is excessively shallow all unfavorable to contacting and being bent bearing capacity.But quench layer nor more deeper better, it is best or
Case depth appropriate can make the flank of tooth and tooth root all have higher intensity（Bearing capacity）.
The gear teeth of gear are weighted load face on one side, and another side seldom loads in the case of reversion, in addition, gear is one
Seldom reversed installation after the installation of a direction, belongs to underloading face, and existing processing method is either stress heavy duty face or underloading
Face is heated all together, is quenched together, although meeting the technological requirement of quenching, is reduction of the quality of gear, sawtooth by
Power heavy duty face is easier to be worn or be broken in subsequent processing operation, and service life shortens.
Based on this, it is necessary to study a kind of gear can be used for unidirectional loads.
Invention content
It is an object of the invention to overcome problem above of the existing technology, a kind of unidirectional loads gear, structure are provided
Simply, the strength of gear teeth of the invention is high, wearability is good, service life is long, gear high load capacity.
To realize above-mentioned technical purpose and the technique effect, the invention is realized by the following technical scheme：
A kind of unidirectional loads gear, including gear, the gear include end face and the gear teeth that are arranged on end face,
Tooth socket is provided between the gear teeth, the gear teeth include being used on supporting layer positioned at the supporting layer of tooth socket side and setting
The stiffening layer of load, the stiffening layer include the high hard surface layer for connecting the hardened layer of supporting layer and being arranged on hardened layer,
The high hard surface layer is located at the other side of tooth socket；The thickness of the supporting layer is more than hardened layer, and the thickness of the hardened layer is big
In high hard surface layer.
Preferably, the stiffening layer is located at the side clockwise or counterclockwise of the gear teeth.Using this technical solution, for knowing
Position of the other stiffening layer on the gear teeth.
Preferably, the thickness of the high hard surface layer is arranged in 0.1~0.2mm；The thickness setting of the stiffening layer exists
The 1/4~1/3 of gear teeth thickness.Using this technical solution, contribute to the intensity and abrasion resistant effect that promote the gear teeth.
Preferably, the hardness of the high hard surface layer is arranged in HRC58~63；The hardness setting of the hardened layer exists
HRC42~58.Using this technical solution, high hard surface layer is used for contact and friction between gear, contributes to wear-resisting；Hardening
Layer is used to support high hard surface layer, to increase the intensity of high hard surface layer；Wherein, the hardness of the high hard surface layer of the gear teeth is higher than
Brittleness rises when HRC63, and contact fatigue strength declines when being less than HRC57.
Preferably, the material of the gear 1 is made of the carburizing steel of 20CrMnTi or 20CrMnMo.Using this
Technical solution, the advanced carburizing steel of 20CrMnMo high intensity；Intensity be higher than 15CrMnMo, plasticity and toughness are slightly lower, quenching degree and
Mechanical property ratio 20CrMnTi high has good comprehensive mechanical property and Low temperature impact toughness after quenched low-temperature tempering；Carburizing
It is also easy to produce crackle when there is higher bending strength and wear-resisting property after quenching, but being ground；Weldability is bad, is suitable for electric resistance welding
It connects, needs to preheat before weldering, postwelding needs temper；Machinability and hot-workability are good.
20CrMnTi is carburizing steel, and carburizing steel is usually the mild steel that phosphorus content is 0.17%-0.24%；It is mostly used it on automobile
Transmission gear is manufactured, is Cr Mn Ti steel in middle quenching degree carburizing steel, quenching degree is higher, is ensureing through hardening, especially
It is that there is higher low-temperature impact toughness；20CrMnTi hardened case processing steel；Good processability, machining deformation are micro-
Small, anti-fatigue performance is fairly good.
Preferably, being provided with stiffened label on the end face, the stiffened label is positioned at the clockwise of gear teeth stiffening layer
Direction one side.Using this technical solution, help to identify the stiffening layer on the gear teeth.
Preferably, the stiffened is labeled as the groove being arranged on end face, it is provided with stiffening layer in the groove, is added
The hardness of hard formation is consistent with the hardness of the stiffening layer on the gear teeth.Using this technical solution, stiffening layer in stiffened marker groove with
Stiffening layer on the gear teeth is molded together, is used for the hardness of the non-destructive testing gear teeth.
Preferably, the centre of the gear is provided with centre bore, it is fixed to be provided with positioned at the side of the centre bore
Position slot.Using this technical solution, centre bore is for installing rotary gear shaft；Locating slot is used to gear being stuck in shaft.
The beneficial effects of the invention are as follows：The configuration of the present invention is simple, easy to process, intensity is high, load capacity is strong, wearability
Good, service life is long；High hard surface layer and stiffening layer are set on one side by the load in the gear teeth so that the surface of the gear teeth is not easy to grind
Damage can bear larger deflection, and the high hard surface layer being arranged is not susceptible to embrittlement.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention and attached drawing is coordinated to be described in detail below.This hair
Bright specific implementation mode is shown in detail by following embodiment and its attached drawing.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is gear mechanism schematic diagram of the present invention；
Fig. 2 is gear partial cutaway schematic of the present invention；
Fig. 3 is close-up schematic view of the present invention,
Fig. 4 is of the present invention with subtest replacement surface block schematic diagram.
Figure label explanation：Gear 1, end face 2, the gear teeth 3, tooth socket 4, supporting layer 5, stiffening layer 6, hardened layer 7 are high hard
Superficial layer 8, stiffened label 9, centre bore 10, locating slot 11, subtest substitute surface block 12.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
Shown in Fig. 4, a kind of unidirectional loads gear, including gear 1, the gear 1 include end face 2 with
And the gear teeth 3 being arranged on end face 2, tooth socket 4 is provided between the gear teeth 3, the gear teeth 3 include being located at 4 side of tooth socket
Supporting layer 5 and be arranged on supporting layer 5 for load stiffening layer 6, the stiffening layer 6 include connection supporting layer 5 hardening
Layer 7 and the high hard surface layer 8 being arranged on hardened layer 7, the high hard surface layer 8 are located at the other side of tooth socket 4；The support
The thickness of layer 5 is more than hardened layer 7, and the thickness of the hardened layer 7 is more than high hard surface layer 8.
Preferably, the stiffening layer 6 is located at the side clockwise or counterclockwise of the gear teeth 3.Using this technical solution, it is used for
Identify position of the stiffening layer 6 on the gear teeth 3.
Preferably, the thickness of the high hard surface layer 8 is arranged in 0.1~0.2mm；The thickness of the stiffening layer 6 is arranged
The 1/4~1/3 of 3 thickness of the gear teeth.Using this technical solution, contribute to the intensity and abrasion resistant effect that promote the gear teeth 3.
Preferably, the hardness of the high hard surface layer 8 is arranged in HRC58~63；The hardness setting of the hardened layer 7 exists
HRC42~58.Using this technical solution, high hard surface layer 8 is used for contact and friction between gear, contributes to wear-resisting；Firmly
Change layer 7 and be used to support high hard surface layer 8, to increase the intensity of high hard surface layer 8；Wherein, the hardness of 3 high hard surface layer of the gear teeth is high
Brittleness rises when HRC63, and contact fatigue strength declines when being less than HRC57.
Preferably, the material of the gear 1 is made of the carburizing steel of 20CrMnTi or 20CrMnMo.Using this
Technical solution, the advanced carburizing steel of 20CrMnMo high intensity；Intensity be higher than 15CrMnMo, plasticity and toughness are slightly lower, quenching degree and
Mechanical property ratio 20CrMnTi high has good comprehensive mechanical property and Low temperature impact toughness after quenched low-temperature tempering；Carburizing
It is also easy to produce crackle when there is higher bending strength and wear-resisting property after quenching, but being ground；Weldability is bad, is suitable for electric resistance welding
It connects, needs to preheat before weldering, postwelding needs temper；Machinability and hot-workability are good.
20CrMnTi is carburizing steel, and carburizing steel is usually the mild steel that phosphorus content is 0.17%-0.24%；It is mostly used it on automobile
Transmission gear is manufactured, is Cr Mn Ti steel in middle quenching degree carburizing steel, quenching degree is higher, is ensureing through hardening, especially
It is that there is higher low-temperature impact toughness；20CrMnTi hardened case processing steel；Good processability, machining deformation are micro-
Small, anti-fatigue performance is fairly good.
Preferably, being provided with stiffened label 9 on the end face 2, the stiffened label 9 is located at the suitable of 3 stiffening layer 6 of the gear teeth
Clockwise one side.Using this technical solution, help to identify the stiffening layer 6 on the gear teeth 3.
Preferably, the stiffened label 9 is the groove being arranged on end face 3, it is provided with stiffening layer 6 in the groove,
The hardness of its stiffening layer 6 is consistent with the hardness of stiffening layer 6 on the gear teeth 3.Using this technical solution, in 9 groove of stiffened label
Stiffening layer 6 is molded together with the stiffening layer 6 on the gear teeth, is used for the hardness of the non-destructive testing gear teeth 3.
Preferably, the centre of the gear 1 is provided with centre bore 10, the side for being located at the centre bore 10 is arranged
There is locating slot 11.Using this technical solution, centre bore 10 is for installing rotary gear shaft；Locating slot 11 is used to gear being stuck in shaft
On.
Specific embodiment
In actual use, since the load surface of gear tooth has carried out quenching stiffened, the load surface hardness of the gear teeth made
Reinforce, it is not easy to wear.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. a kind of unidirectional loads gear, including gear（1）, the gear（1）Including end face（2）And setting is being held
Face（2）On the gear teeth（3）, the gear teeth（3）Between be provided with tooth socket（4）, it is characterised in that：The gear teeth（3）Including being located at
Tooth socket（4）The supporting layer of side（5）And it is arranged in supporting layer（5）The upper stiffening layer for load（6）, the stiffening layer（6）
Including connecting supporting layer（5）Hardened layer（7）And it is arranged in hardened layer（7）On high hard surface layer（8）, the high hard surface
Layer（8）Positioned at tooth socket（4）The other side；The supporting layer（5）Thickness be more than hardened layer（7）, the hardened layer（7）Thickness
More than high hard surface layer（8）.
2. a kind of unidirectional loads gear according to claim 1, it is characterised in that：The stiffening layer（6）Positioned at the gear teeth（3）
Side clockwise or counterclockwise.
3. a kind of unidirectional loads gear according to claim 1, it is characterised in that：The high hard surface layer（8）Thickness
It is arranged in 0.1~0.2mm；The stiffening layer（6）Thickness be arranged in the gear teeth（3）The 1/4~1/3 of thickness.
4. a kind of unidirectional loads gear according to claim 1, it is characterised in that：The high hard surface layer（8）Hardness
It is arranged in HRC58~63；The hardened layer（7）Hardness be arranged in HRC42~58.
5. a kind of unidirectional loads gear according to claim 1, it is characterised in that：The gear（1）Material adopt
It is made of the carburizing steel of 20CrMnTi or 20CrMnMo.
6. a kind of unidirectional loads gear according to claim 1, it is characterised in that：The end face（2）On be provided with stiffened
Label（9）, the stiffened label（9）Positioned at the gear teeth（3）Stiffening layer（6）Clockwise direction one side.
7. a kind of unidirectional loads gear according to claim 6, it is characterised in that：The stiffened label（9）Exist for setting
End face（3）On groove, be provided with stiffening layer in the groove（6）, stiffening layer（6）Hardness and the gear teeth（3）On stiffened
Layer（6）Hardness it is consistent.
8. a kind of unidirectional loads gear according to claim 1, it is characterised in that：The gear（1）Centre set
It is equipped with centre bore（10）, it is located at the centre bore（10）Side be provided with locating slot（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930426.5A CN108708960A (en) | 2018-08-15 | 2018-08-15 | A kind of unidirectional loads gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930426.5A CN108708960A (en) | 2018-08-15 | 2018-08-15 | A kind of unidirectional loads gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108708960A true CN108708960A (en) | 2018-10-26 |
Family
ID=63873332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810930426.5A Withdrawn CN108708960A (en) | 2018-08-15 | 2018-08-15 | A kind of unidirectional loads gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108708960A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898714A (en) * | 2021-09-02 | 2022-01-07 | 昆明理工大学 | Partitioned gradient component gear |
-
2018
- 2018-08-15 CN CN201810930426.5A patent/CN108708960A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898714A (en) * | 2021-09-02 | 2022-01-07 | 昆明理工大学 | Partitioned gradient component gear |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181026 |