CN208845679U - Auxiliary box of automobile gear box low gear tooth forging - Google Patents
Auxiliary box of automobile gear box low gear tooth forging Download PDFInfo
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- CN208845679U CN208845679U CN201821343539.7U CN201821343539U CN208845679U CN 208845679 U CN208845679 U CN 208845679U CN 201821343539 U CN201821343539 U CN 201821343539U CN 208845679 U CN208845679 U CN 208845679U
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- gear
- axis hole
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Abstract
The utility model discloses a kind of auxiliary box of automobile gear box low gear tooth forging, it is an integral structure, including low gear tooth ontology, gear ring section is formed in the side of the low gear tooth ontology, first gear axis hole is offered at the center of the gear ring section, the first gear axis hole is bellmouth and open end is arranged outwardly, weight loss groove is provided on low gear tooth ontology between the first gear axis hole and gear ring section, limited step is formed between the weight loss groove and first gear axis hole, and the height of the limited step end face is lower than the height of gear ring section end face；Stepped construction section is formed in the other side of the low gear tooth ontology, the diameter of the construction section is less than the gear ring section, second gear axis hole is offered at the center of the construction section, the second gear axis hole is stepped hole, and the second gear axis hole is coaxially disposed and is not communicated with the first gear axis hole.Its remarkable result is: institutional framework is compact, and intensity is high, and lightweight is good, longer life expectancy.
Description
Technical field
The utility model relates to arrive automobile gearbox parts technical field, and in particular to a kind of auxiliary box of automobile gear box is low
Keep off tooth forging.
Background technique
Speed changer is for changing the revolving speed from engine and the mechanism of torque, it is capable of fixing or a point gear changes output shaft
With input shaft transmission ratio, also known as gearbox.Speed changer is made of variable transmission mechanism and operating mechanism, some automobiles are also dynamic
Output mechanism.Transmission mechanism ordinary gear multi-purpose greatly is driven, also some Planetary Gear Transmissions.Ordinary gear transmission shifting mechanism
Generally with shifting slide gear and synchronizer etc..Gearbox is made of variable transmission mechanism and selector gear two parts.Speed change passes
The main function of motivation structure is numerical value and the direction for changing torque and revolving speed；The main function of operating mechanism is control driver
Structure realizes the transformation of transmission ratio, that is, shift is realized, to reach variable-speed torque-converting.
Low gear tooth in gearbox refers mainly to work in the gear set of low gear workspace, and the work characteristics in this area is
Utilization rate of driving a vehicle is low, and the working time is short, and their revolving speed is relatively low, but the torque that they are transmitted is bigger, wheel
The stress value of tooth is relatively high, therefore it is required that low gear tooth has good intensity, rigidity and mechanical property.
However, low gear gear typically now is annular cast made of reaming, therefore there is casting metal structure knots
The unsound disadvantage of structure, and gear casting is formed adding man-hour requirement to cut a large amount of surpluses, while can cut off casting metal
Fibr tissue, reduce gear casting service life.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the utility model is to provide one kind to have the spies such as intensity is high, lightweight is good
The auxiliary box of automobile gear box low gear tooth forging of point.
In order to achieve the above objectives, the technical solution adopted in the utility model is as follows:
A kind of auxiliary box of automobile gear box low gear tooth forging, key are: the low gear tooth forging is an integral structure, packet
Low gear tooth ontology is included, gear ring section is formed in the side of the low gear tooth ontology, offers first gear at the center of the gear ring section
Axis hole, the first gear axis hole is bellmouth and open end is arranged outwardly, between the first gear axis hole and gear ring section
It is provided with weight loss groove on low gear tooth ontology, forms limited step, and the limiting stand between the weight loss groove and first gear axis hole
The height of rank end face is lower than the height of gear ring section end face；Stepped installation is formed in the other side of the low gear tooth ontology
Section, the diameter of the construction section are less than the gear ring section, offer second gear axis hole at the center of the construction section, and described second
Gear shaft holes are stepped hole, and the second gear axis hole is coaxially disposed and is not communicated with the first gear axis hole.
Further, the construction section includes the first construction section and the second construction section, wherein the first construction section is located at second
Construction section compared with outside, and the diameter of the first construction section, less than the second construction section, the length of the first construction section is greater than the second installation
Section.
Further, the second gear axis hole includes outside axis hole and inside axis hole, and the outside axis hole passed through
It crosses axis hole to be connected with the inside axis hole, the diameter of the outside axis hole is greater than the inside axis hole.
Further, the outside axis hole and transition axis hole are opened in the center of first construction section, the inner shafts
Hole is opened in the first construction section and the second construction section junction and extends inwardly.
Further, the inside axis hole and outside axis hole are bellmouth and open end is close to outside setting, described
The side wall of transition axis hole is cambered surface.
The remarkable result of the utility model is: integrated forging molding, therefore under the premise of ensuring forging ratio, ensure that it
Fibr tissue is not cut off, and keeps entire gear forgings institutional framework compact, and intensity is high, can better meet car transmissions
Intensity requirement；It is provided with weight loss groove, so that this product lightweight is good, 20% or more is saved in weight；Longer life expectancy, and it is existing
There is structure to compare, avoids the cut-off defect of fibr tissue, and be effectively guaranteed product quality, while being less prone to loosening
Or phenomena such as damage.
Detailed description of the invention
Fig. 1 is a viewing angle constructions schematic diagram of the utility model；
Fig. 2 is another viewing angle constructions schematic diagram of the utility model；
Fig. 3 is the front view of the utility model；
Fig. 4 is the A-A cross-sectional view of Fig. 3；
Fig. 5 is the top view of the utility model；
Fig. 6 is the bottom view of the utility model.
Specific embodiment
Specific embodiment of the present utility model and working principle are described in further detail with reference to the accompanying drawing.
As shown in Fig. 1~Fig. 6, a kind of auxiliary box of automobile gear box low gear tooth forging, the low gear tooth forging are integral type knot
Structure, including low gear tooth ontology, form gear ring section 1 in the side of the low gear tooth ontology, offer the at the center of the gear ring section 1
One gear shaft holes 2, the first gear axis hole 2 is bellmouth and open end is arranged outwardly, in the first gear axis hole 2 and gear ring
It is provided with weight loss groove 3 on low gear tooth ontology between section 1, forms limited step between the weight loss groove 3 and first gear axis hole 2
4, and the height of 4 end face of limited step is lower than the height of 1 end face of gear ring section；In the other side shape of the low gear tooth ontology
At there is a stepped construction section 5, the diameter of the construction section 5 is less than the gear ring section 1, offers the at the center of the construction section 5
Two gear shaft holes 6, the second gear axis hole 6 is stepped hole, and the second gear axis hole 6 and the first gear axis hole 2 are same
Axis is arranged and is not communicated with.
The construction section 5 includes the first construction section 51 and the second construction section 52, wherein the first construction section 51 is located at the second peace
Fill section 52 compared with outside, and the diameter of the first construction section 51 is less than the second construction section 52, and the length of the first construction section 51 is greater than the
Two construction sections 52.
The second gear axis hole 6 includes outside axis hole 61 and inside axis hole 62, and the outside axis hole 61 passes through transition
Axis hole 63 is connected with the inside axis hole 62, and the diameter of the outside axis hole 61 is greater than the inside axis hole 62.The inner shafts
Hole 62 and outside axis hole 61 are bellmouth and open end is close to outside setting, and the side wall of the transition axis hole 63 is cambered surface.
Preferably, the outside axis hole 61 is opened in the center of first construction section 51 with transition axis hole 63, described interior
Side axle hole 62 is opened in the first construction section 51 and 52 junction of the second construction section and extends inwardly.
It is convenient for gear forgings forging molding using the above structure, also gear forgings is avoided to deform in heat treatment process,
Improve the dimensional accuracy of the forging.
Low gear tooth forging described in this programme is integrated forging molding, keeps entire gear forgings institutional framework compact, intensity
Height, product quality is guaranteed, can better meet the intensity requirement of car transmissions, extend service life；By setting
The weight loss groove 3 set saves 20% or more so that this product lightweight is good in weight.
Claims (5)
1. a kind of auxiliary box of automobile gear box low gear tooth forging, it is characterised in that: the low gear tooth forging is an integral structure, including
Low gear tooth ontology forms gear ring section in the side of the low gear tooth ontology, offers first gear axis at the center of the gear ring section
Hole, the first gear axis hole is bellmouth and open end is arranged outwardly, low between the first gear axis hole and gear ring section
It is provided with weight loss groove on gear tooth ontology, forms limited step, and the limited step between the weight loss groove and first gear axis hole
The height of end face is lower than the height of gear ring section end face；Stepped installation is formed in the other side of the low gear tooth ontology
Section, the diameter of the construction section are less than the gear ring section, offer second gear axis hole at the center of the construction section, and described second
Gear shaft holes are stepped hole, and the second gear axis hole is coaxially disposed and is not communicated with the first gear axis hole.
2. auxiliary box of automobile gear box low gear tooth forging according to claim 1, it is characterised in that: the construction section includes the
One construction section and the second construction section, wherein the first construction section be located at the second construction section compared with outside, and the diameter of the first construction section
Less than the second construction section, the length of the first construction section is greater than the second construction section.
3. auxiliary box of automobile gear box low gear tooth forging according to claim 2, it is characterised in that: the second gear axis hole
Including outside axis hole and inside axis hole, and the outside axis hole is connected by transition axis hole with the inside axis hole, the outside
The diameter of axis hole is greater than the inside axis hole.
4. auxiliary box of automobile gear box low gear tooth forging according to claim 3, it is characterised in that: the outside axis hole and mistake
The center that axis hole is opened in first construction section is crossed, the inside axis hole is opened in the first construction section and connect with the second construction section
Locate and extends inwardly.
5. auxiliary box of automobile gear box low gear tooth forging according to claim 3 or 4, it is characterised in that: the inside axis hole
With outside axis hole be bellmouth and open end is close to outside setting, and the side wall of the transition axis hole is cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821343539.7U CN208845679U (en) | 2018-08-20 | 2018-08-20 | Auxiliary box of automobile gear box low gear tooth forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821343539.7U CN208845679U (en) | 2018-08-20 | 2018-08-20 | Auxiliary box of automobile gear box low gear tooth forging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208845679U true CN208845679U (en) | 2019-05-10 |
Family
ID=66356950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821343539.7U Active CN208845679U (en) | 2018-08-20 | 2018-08-20 | Auxiliary box of automobile gear box low gear tooth forging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208845679U (en) |
-
2018
- 2018-08-20 CN CN201821343539.7U patent/CN208845679U/en active Active
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| GR01 | Patent grant |