CN209026148U - A kind of powder metallurgy oil pump driver gear - Google Patents
A kind of powder metallurgy oil pump driver gear Download PDFInfo
- Publication number
- CN209026148U CN209026148U CN201821753865.5U CN201821753865U CN209026148U CN 209026148 U CN209026148 U CN 209026148U CN 201821753865 U CN201821753865 U CN 201821753865U CN 209026148 U CN209026148 U CN 209026148U
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- CN
- China
- Prior art keywords
- gear
- centre bore
- oil pump
- shaped
- powder metallurgy
- 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.)
- Expired - Fee Related
Links
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The utility model relates to auto parts technical fields, and in particular to one kind is used for automobile power transmission powder metallurgy oil pump driver gear.It include: the gear for being provided centrally with special-shaped centre bore；The side of the gear is provided with circular shrinkage hole step around the special-shaped centre bore；The other side of the gear is provided with round boss rank around the special-shaped centre bore；The abnormity centre bore cross section is provided with a flat stepped hole in stepped portions；The flat irregularly-shaped hole is greater than the end face of round boss rank side in the end face of circular shrinkage hole step side；It is circumferentially arranged on the outside of the gear to have multiple teeth, and each tooth tip is provided with flank profil oblique angle.The driving gear has the advantages that simple structure, high transmission accuracy and installation positioning are convenient, accurate.
Description
Technical field
The utility model relates to auto parts technical fields, and in particular to a kind of powder metallurgy for automobile power transmission
Oily pump driver gear.
Background technique
Power takeoff is also known as power take off, is usually formed by combining by gear-box, clutch.There is gas by form point
The types such as dynamic, hydraulic, manual.Hydraulic pump power takeoff is the common standard configuration auto parts and components of the automobiles such as lorry, crane, dump truck.
It is typically mounted on the shell of gearbox front end torque-converters.Oily pump driver gear needs to bear biggish torsion when power takeoff works
Power requires also very high in the mechanical properties such as part wearability and intensity.Common oil pump driver gear uses steel alloy machine
Tool processing is produced.The oil pump driving gear structure of machining is simple, mostly uses centre bore band keyway arrangements and output shaft
Installation positioning is carried out, this structure driven torque is small, is used for a long time and easily loosens and transmission accuracy is caused to lose.In addition it is machined
Drive Gearmaking Technology complicated, process is more, waste of material is big, and high production cost is unsuitable for producing in enormous quantities.
Summary of the invention
In view of the defects existing in the prior art and insufficient, it is simple, resistance to that the purpose of this utility model is to provide a kind of structures
With the good powder metallurgy oil pump driver gear that can be used for automobile power transmission of property.
To achieve the above object, the utility model uses following technical scheme:
A kind of powder metallurgy driving gear, comprising: be provided centrally with the gear of special-shaped centre bore；
The side of the gear is provided with circular shrinkage hole step around the special-shaped centre bore；
The other side of the gear is provided with round boss rank around the special-shaped centre bore；
It is circumferentially arranged on the outside of the gear to have multiple teeth, and each tooth tip is provided with flank profil oblique angle.
In one embodiment, the special-shaped centre bore includes the first part that cross section is in basic circle shape, and setting exists
Between the first part, cross section is in step-like second part；
Flat hole is provided on the second part.Flat hole port is convex to circle towards circular shrinkage hole step direction specific surface
Step is big；
In one embodiment, flat hole step is provided on the flat hole.
In one embodiment, the step wedge angle of the second part is in arc-shaped.
In one embodiment, the center irregularly-shaped hole is provided with circumferential oblique angle.
In one embodiment, the flank profil oblique angle of the tooth tip is 30 °.
In one embodiment, wear-resistant coating is provided on the tooth.
Compared with prior art, the utility model has technical effect beneficial below: by the way that special-shaped centre bore, energy is arranged
Enough and transmission axle close fit, effectively improves transmission performance.It may be implemented to drive by the way that round concave station rank and flat stepped hole is arranged
The quick pin-shaped of moving gear and its mate positions, to improve the durability of driving gear, long service life.In addition, should
Driving gear has the advantages that simple structure, high transmission accuracy and installation positioning are convenient, accurate.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram.
Fig. 2 is the utility model main view.
Fig. 3 is the utility model side view.
Fig. 4 is the structural schematic diagram of the utility model tooth.
Wherein: 1 is gear；2 be special-shaped centre bore；3 be round concave station rank；4 be flat hole；5 be flat hole step；
6 be round boss rank；7 be wear-resistant coating；8 be center irregularly-shaped hole circumferential direction oblique angle；9 be tooth.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
A kind of powder metallurgy oil pump driver gear provided by the utility model can be used for automobile hydraulic pump power takeoff.With reference to
Shown in Fig. 1, Fig. 2, which includes: gear 1.The gear 1 is provided centrally with special-shaped centre bore 2.The abnormity
Centre bore 2 includes that can be in the first part 21 of basic circle shape, and be arranged between the first part 21 with cross section, transversal
Face is in step-like second part 22.Flat irregularly-shaped hole 4 is provided on the second part 22；It is provided on the flat irregularly-shaped hole 4
Flat hole step 5.4 port of flat hole is greater than the end face of round boss rank side in the end face of circular shrinkage hole step side.
The step wedge angle of the second part 22 is in arc-shaped.In addition, the center irregularly-shaped hole 2 is additionally provided with circumferentially tiltedly
Angle.
In the side of the gear 1, the special-shaped centre bore 2 is provided with circular shrinkage hole step 3；The gear
The other side of ontology 1 is provided with round boss rank 6 around the special-shaped centre bore 2.
In addition, circumferentially arranged on the outside of gear 1 there are multiple teeth 9, wear-resistant coating is provided on each tooth.And each tooth
9 tops are provided with flank profil oblique angle.For example, gear 1 can be set with 37 teeth 9, and it is 30 ° that flank profil oblique angle, which is arranged,.
In one embodiment, above-mentioned driving gear can be controlled the whole of the once-forming part of alloy material by iron-based powder
Body formula structure, then by high temperature sintering, precision truing, flank of tooth high-frequency quenching, toothed surfaces spray wear-resistant coating etc. be made it is final
Drive gear.Powder metallurgy oil pump driver gear parts density is up to 7.1g/cm3More than, teethed surfaces hardness 40-55HRC resists
Tensile strength >=620MPa has many advantages, such as dimensional accuracy height, light-weight, intensity is high, wear-resistant.For gear 1, pass through Ni
Addition gear through hardening performance can be improved, and make depth of hardening control in 0.8-1.8mm, make it have it is outer it is hard in tough spy
Property.For the tooth on driving gear, toothed surfaces are also sprayed with 0.3mm wear-resistant coating and improve the running wearability of gear drive
Energy.
In addition, special-shaped centre bore 2 is in the center of gear 1, the base circle diameter (BCD) of first part be can be set to
Φ 40 or other sizes.Precision can be controlled in 0~+0.06mm after shaping；Special-shaped centre bore both ends of the surface circumference can be with 30 °
Circumferential oblique angle 8, circumference burr is to transmission shaft and the adverse effect for driving gear assembly precision after can eliminating shaping.Special-shaped centre bore
2 wedge angles have circular arc, it is ensured that enough lubricating oil passes through.Round concave station rank 3 on special-shaped centre bore 2, roots level is complete
Circumferential band R circular arc, round concave station rank 3 make transmission shaft combine positioning even closer when with driving gear assembly；Round recessed
There is a flat irregularly-shaped hole 4 between 2 platform of step 3 and special-shaped centre bore, is respectively provided with flat hole step 5 on oblate hole 4, can control
Flat stepped hole dimension control processed is in 0~+0.15mm.Driving gear and its mate can be improved in oblate stepped hole
Quick pin-shaped positioning；There is a round boss rank 6 in the reverse side of circular shrinkage hole step 3, other parts on transmission shaft can be prevented and drives
The interference of moving gear in operation.
Powder metallurgy oil pump driver gear processing cost is low, high-efficient, energy-saving material-saving, and capability and performance is stablized, and is suitable for large quantities of
Amount production.
Claims (7)
1. a kind of powder metallurgy oil pump driver gear characterized by comprising be provided centrally with the gear sheet of special-shaped centre bore
Body；
The side of the gear is provided with circular shrinkage hole step around the special-shaped centre bore；
The other side of the gear is provided with round boss rank around the special-shaped centre bore；
It is circumferentially arranged on the outside of the gear to have multiple teeth, and each tooth tip is provided with flank profil oblique angle.
2. powder metallurgy oil pump driver gear according to claim 1, which is characterized in that the abnormity centre bore includes cross
Section is in the first part of basic circle shape, and is arranged between the first part, and cross section is in step-like second part；
Flat irregularly-shaped hole is provided on the second part, and the flat irregularly-shaped hole is greater than circle in the end face of circular shrinkage hole step side
The end face of shape boss rank side.
3. powder metallurgy oil pump driver gear according to claim 2, which is characterized in that be provided on the flat irregularly-shaped hole
Flat hole step.
4. powder metallurgy oil pump driver gear according to claim 2, which is characterized in that the step point of the second part
Angle is in arc-shaped.
5. powder metallurgy oil pump driver gear according to claim 1, which is characterized in that the abnormity centre bore is provided with
Circumferential oblique angle.
6. powder metallurgy oil pump driver gear according to claim 1, which is characterized in that the flank profil oblique angle of the tooth tip
It is 30 °.
7. powder metallurgy oil pump driver gear according to claim 1 or 6, which is characterized in that be provided on the tooth resistance to
Grind coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821753865.5U CN209026148U (en) | 2018-10-26 | 2018-10-26 | A kind of powder metallurgy oil pump driver gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821753865.5U CN209026148U (en) | 2018-10-26 | 2018-10-26 | A kind of powder metallurgy oil pump driver gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209026148U true CN209026148U (en) | 2019-06-25 |
Family
ID=66908256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821753865.5U Expired - Fee Related CN209026148U (en) | 2018-10-26 | 2018-10-26 | A kind of powder metallurgy oil pump driver gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209026148U (en) |
-
2018
- 2018-10-26 CN CN201821753865.5U patent/CN209026148U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190625 |