CN207393337U - Piston - Google Patents
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- CN207393337U CN207393337U CN201721484632.5U CN201721484632U CN207393337U CN 207393337 U CN207393337 U CN 207393337U CN 201721484632 U CN201721484632 U CN 201721484632U CN 207393337 U CN207393337 U CN 207393337U
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- head
- skirt section
- oil duct
- cooling oil
- piston
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Abstract
The utility model discloses a kind of piston, piston includes：Head and skirt section, the upper surface in the lower surface on the head and the skirt section is plane to form welding plane opposing upper and lower, the upper surface in the lower surface on the head and the skirt section is additionally provided with opposite sub- cooling oil duct to form cooling oil duct, and the lower surface on the head is also provided with solder arrangement of grooves in the annular inboard of the sub- cooling oil duct and outside.As a result, by head and skirt fits, welding quality can be improved, can also ensure good cooling effect, so as to effectively solve the processing of cooling oil duct and formation problems.
Description
Technical field
The utility model is related to piston technical field, more particularly to a kind of piston.
Background technology
In order to realize that forging steel piston head is quickly cooled down, reduces piston crown temperature, inner cooling path should rationally design and cloth
Office.Interior cooling oil chamber processing technology that steel forging makes piston is poor, difficulty is big, and efficiency is low and of high cost, around interior oil cooling passage into
Type problem employs a variety of methods both at home and abroad, and the side of internal combustion engine one-piece piston is manufactured as disclosed in Chinese patent CN1813125
Method, the disclosed methods for the non-movable ring segment on piston for IC engine of Chinese patent CN101903632, Chinese patent
Internal combustion engine disclosed in CN101466938 and its manufacturing method, one kind disclosed in Chinese patent CN106150749 are based on laser
The steel pistons and its processing method of cooling oil duct in welding fabrication.
In correlation technique, due to being limited to processing technology, current most effective interior oil cooling passage forming method is to pass through rotation
Friction welding or laser welding shaping.Spin friction welding can effectively solve the problem that interior oil cooling passage processing and formation problems, but revolve
Turn friction welding (FW) and can form overlap to remain in inside inner cooling path, affect cooling effect and performance, increase piston weight, sternly
It can cause defect ware during weight.For laser welding 38MnVS6 or 42CrMo when typical forging steel piston, there are cold and hot crack problems.Cause
This, is further improved for the manufacturing method of current forging steel piston.
Utility model content
The utility model is intended at least solve one of technical problem in the prior art.For this purpose, the utility model carries
Go out a kind of piston, which can improve welding quality, can also ensure good cooling effect.
Piston according to the present utility model includes：The upper table in head and skirt section, the lower surface on the head and the skirt section
Face is plane to form welding plane opposing upper and lower, and the upper surface in the lower surface on the head and the skirt section is additionally provided with
Opposite sub- cooling oil duct to form cooling oil duct, the lower surface on the head also the sub- cooling oil duct annular inboard and
Outside is provided with solder arrangement of grooves.
Piston according to the present utility model, by head and skirt fits, can improve welding quality, can also ensure very
Good cooling effect, so as to effectively solve the processing of cooling oil duct and formation problems.
Optionally, combuster is formed on the head, the cooling oil duct is around the combustion chamber.
Further, the piston further includes：The upper surface in positioning pin, the lower surface on the head and the skirt section is also
Pin hole is provided with, the positioning pin is stretched into the pin hole on the head and the pin hole in the skirt section.
Specifically, the distance of two solder arrangement of grooves to the cooling oil ducts is identical.
Optionally, the upper surface in the lower surface on the head and the skirt section is also set in the annular inboard of the cooling oil duct
It is equipped with the sub- chamber of loss of weight.
Further, the processing flatness of the upper surface in the lower surface on the head and the skirt section is in 0.04mm-
Between 0.06mm, the roughness of the upper surface in the lower surface on the head and the skirt section is in 1.5Ra-1.8Ra.
Description of the drawings
Fig. 1 is the sectional view according to the piston of the utility model embodiment；
Fig. 2 is the sectional view after the partial enlargement according to the piston of the utility model embodiment；
Fig. 3 is the schematic diagram according to the manufacturing method of the piston of the utility model embodiment.
Reference numeral：
Piston 10；
Head 1；Sub- cooling oil duct 11；Pin hole 12；Solder arrangement of grooves 13；Combustion chamber 14；Lower surface 15；
Skirt section 2；Upper surface 21；
Positioning pin 3；The sub- chamber 4 of loss of weight.
Specific embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and it is not intended that the utility model
Limitation.
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify description rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model
System.In addition, define " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ".
In the description of the utility model, unless otherwise indicated, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
The manufacturing method of the piston 10 according to the utility model embodiment is described in detail below with reference to Fig. 1-Fig. 3.
As shown in Figure 1-Figure 3, comprised the following steps according to the manufacturing method of the utility model embodiment：It is S1, separately fabricated
The head 1 of piston 10 and skirt section 2, that is to say, that head 1 and skirt section 2 are separately provided as two parts, then by 1 He of head
Skirt section 2 is assembled together, and the lower surface 15 on head 1 is fabricated to plane, and the upper surface 21 in skirt section 2 is fabricated to plane, such head 1
Lower surface 15 and the upper surface 21 in skirt section 2 can contact with each other well, can be by head 1 and skirt section 2 preferably during welding
Weld together, welding quality can be improved, so as to promote the assembling quality of piston 10.
In addition, the lower surface 15 on head 1 and the upper surface 21 in skirt section 2 are machined with sub- cooling oil duct 11 and pin hole 12, need
It is explained that when head 1 and skirt section 2 are assembled together, sub- cooling oil duct 11 and skirt section 2 on the lower surface 15 on head 1
Upper surface 21 on sub- cooling oil duct 11 dock, a cooling oil duct can be formed, can be flowed in cooling oil duct has cooling
Medium, cooling medium play the role of cooling, and cooling effect, also, the lower surface 15 on head 1 can be played to piston 10
On pin hole 12 can also realize and dock with the pin hole 12 on the upper surface 21 in skirt section 2.
Wherein, as shown in Fig. 2, the lower surface 15 on head 1 also adds in the annular inboard and annular outboard of sub- cooling oil duct 11
Work has solder arrangement of grooves 13, fills solder to the solder arrangement of grooves 13 on head 1 under atmospheric environment, and solder can be soldering
Welding provides raw material, and head 1 is in the lower section in skirt section 2 at this time, and skirt section 2 is in the top on head 1, and positioning pin 3 coordinates on head 1
Pin hole 12 and skirt section 2 pin hole 12 in, so head 1 can be made to be well matched with skirt section 2 together with, afterwards turn over head
1 and skirt section 2 make head 1 then piston 10 be put into vacuum brazing furnace and be brazed, such setting can by skirt section 2 under upper
Prevent that overlap is formed during Welding to be remained in inside cooling oil duct, it is ensured that the cooling effect and performance of piston 10,
Also cold and hot crack problem can be prevented, so as to improve welding quality, and then can effectively solve adding for cooling oil duct
Work and formation problems.
Optionally, as shown in Figure 1, in step sl, head 1 also processes combuster 14, sub- cooling oil duct 11 is processed into
Around combustion chamber 14, it is necessary to explanation, sub- cooling oil duct 11 on the lower surface 15 on head 1 on the upper surface 21 in skirt section 2
The cooling oil duct that is formed of the docking of sub- cooling oil duct 11 around combustion chamber 14, be arranged such the area that can increase cooling oil duct,
Can preferably it cool down to combustion chamber 14, so as to be further ensured that cooling effect.
Further, the processing flatness of the upper surface 21 of the lower surface 15 and skirt section 2 on head 1 is in 0.04mm-0.06mm
Between, the roughness of the lower surface 15 on head 1 and the upper surface 21 in skirt section 2 in 1.5Ra-1.8Ra, such as：The lower surface on head 1
15 and the processing flatness of upper surface 21 in skirt section 2 can be 0.05mm, the lower surface 15 on head 1 and the upper surface 21 in skirt section 2
Roughness can be 1.6Ra, during Welding, the lower surface 15 on the head 1 of such setting and the upper surface in skirt section 2
21 can preferably weld together, and can further promote welding quality, so as to prevent the lower surface 15 on head 1 and skirt
The weld cracking of the upper surface 21 in portion 2, and then the structural strength of piston 10 can be promoted.
Specifically, the volume of solder arrangement of grooves 13 can be 0.15~0.18 times of bonding area, so can be in solder
The enough solders of filling in arrangement of grooves 13, it is ensured that meet welding demand with enough solders during Welding, so as to
To ensure being smoothed out for welding job.
Optionally, brazing temperature can be 1160-1200 DEG C between, soaking time can be 15-60 minutes between, so
Setting may further ensure that being smoothed out for welding job, welding quality can also further be promoted, so as to promote work
The quality of plug 10.
Further, in step s 4, conducted oneself with dignity using head 1 and pressurizeed, such setting, which can be saved, is separately provided pressurization dress
The process put can simplify the manufacturing process of piston 10, so as to so that manufacture is simpler, also, can also save exploitation
The process of pressue device, so as to reduce manufacture cost.
As depicted in figs. 1 and 2, included according to the piston 10 of the utility model embodiment：Head 1 and skirt section 2, head 1
The upper surface 21 in lower surface 15 and skirt section 2 is plane, when the upper surface 21 of the lower surface on head 1 15 and skirt section 2 contacts with each other
When, welding plane opposing upper and lower can be formed, the lower surface 15 on head 1 and the upper surface 21 in skirt section 2 are additionally provided with opposite
Sub- cooling oil duct 11, the sub- cooling oil duct 11 on the lower surface 15 on head 1 and the sub- cooling oil duct 11 on the upper surface 21 in skirt section 2
Docking, can form a cooling oil duct, and can be flowed in cooling oil duct has cooling medium, and cooling medium plays what is cooled
Effect, can play good cooling effect to piston 10.In addition, the lower surface 15 on head 1 is also in the ring of sub- cooling oil duct 11
Shape inner side and outer side is provided with solder arrangement of grooves 13, fills solder to the solder arrangement of grooves 13 on head 1 under atmospheric environment,
Solder can provide raw material for Welding.
Optionally, as shown in Figure 1, forming combuster 14 on head 1, cooling oil duct is around combustion chamber 14, it is necessary to illustrate
, the sub- cooling oil duct 11 on the lower surface 15 on head 1 docks formation with the sub- cooling oil duct 11 on the upper surface 21 in skirt section 2
Cooling oil duct around combustion chamber 14, be arranged such the area that can increase cooling oil duct, preferably combustion chamber 14 can be dropped
Temperature, during so as to be further ensured that cooling effect.
Further, as shown in Figure 1, piston 10 further includes：Positioning pin 3, the lower surface 15 on head 1 and the upper table in skirt section 2
Face 21 is additionally provided with pin hole 12, and positioning pin 3 is stretched into the pin hole 12 on head 1 and the pin hole 12 in skirt section 2, and such setting being capable of labour contractor
Portion 1 and skirt section 2 are assembled together well, and it is fixed can to play the role of position to the relative position on head 1 and skirt section 2.
Specifically, the distance of two solder arrangement of grooves 13 to cooling oil duct is identical, is arranged such the knot that can promote head 1
Structure uniformity can be such that the structure on head 1 more stablizes, so as to promote the structural stability of piston 10, also, weld
In the process, it can ensure the welded uniformity in inner side and outer side of cooling oil duct, can further promote welding effect.
Optionally, as shown in Figure 1, the lower surface 15 on head 1 and the upper surface 21 in skirt section 2 cooling oil duct annular inboard
The sub- chamber 4 of loss of weight is additionally provided with, when the upper surface 21 in the lower surface on head 1 15 and skirt section 2 is docked, on the lower surface 15 on head 1
The sub- chamber 4 of loss of weight and skirt section 2 upper surface 21 on the sub- chamber 4 of loss of weight be docking together, a loss of weight chamber, loss of weight chamber can be formed
With loss of weight effect, the weight of piston 10 can be reduced.
Further, the processing flatness of the upper surface 21 of the lower surface 15 and skirt section 2 on head 1 is in 0.04mm-0.06mm
Between, the roughness of the lower surface 15 on head 1 and the upper surface 21 in skirt section 2 between 1.5Ra-1.8Ra, such as：Under head 1
The processing flatness of the upper surface 21 in surface 15 and skirt section 2 can be 0.05mm, the lower surface 15 on head 1 and the upper table in skirt section 2
The roughness in face 21 can be 1.6Ra, during Welding, the lower surface 15 on the head 1 of such setting and skirt section 2 it is upper
Surface 21 can preferably weld together, and can further promote welding quality, so as to prevent the lower surface 15 on head 1
It cracks with the weld of the upper surface 21 in skirt section 2, and then the structural strength of piston 10 can be promoted.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can in an appropriate manner combine in any one or more embodiments or example.
While there has been shown and described that the embodiment of the utility model, it will be understood by those skilled in the art that：
In the case where not departing from the principle and objective of the utility model can these embodiments be carried out with a variety of variations, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (6)
1. a kind of piston, which is characterized in that including：The upper surface in head and skirt section, the lower surface on the head and the skirt section
It is plane to form welding plane opposing upper and lower, the upper surface in the lower surface on the head and the skirt section is additionally provided with phase
To sub- cooling oil duct to form cooling oil duct, the lower surface on the head is also in the annular inboard of the sub- cooling oil duct and outer
Side is provided with solder arrangement of grooves.
2. piston according to claim 1, which is characterized in that combuster, the cooling oil duct are formed on the head
Around the combustion chamber.
3. piston according to claim 1, which is characterized in that further include：Positioning pin, the lower surface on the head and described
The upper surface in skirt section is additionally provided with pin hole, and the positioning pin is stretched into the pin hole on the head and the pin hole in the skirt section.
4. piston according to claim 1, which is characterized in that two solder arrangement of grooves to the cooling oil duct away from
From identical.
5. piston according to claim 1, which is characterized in that the upper surface in the lower surface on the head and the skirt section exists
The annular inboard of the cooling oil duct is additionally provided with the sub- chamber of loss of weight.
6. piston according to claim 1, which is characterized in that the upper surface in the lower surface on the head and the skirt section
Flatness is processed between 0.04mm-0.06mm, the roughness of the upper surface in the lower surface on the head and the skirt section exists
1.5Ra-1.8Ra。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721484632.5U CN207393337U (en) | 2017-11-09 | 2017-11-09 | Piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721484632.5U CN207393337U (en) | 2017-11-09 | 2017-11-09 | Piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393337U true CN207393337U (en) | 2018-05-22 |
Family
ID=62325663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721484632.5U Active CN207393337U (en) | 2017-11-09 | 2017-11-09 | Piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207393337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876919A (en) * | 2017-11-09 | 2018-04-06 | 北京海纳川汽车部件股份有限公司 | The manufacture method and piston of piston |
-
2017
- 2017-11-09 CN CN201721484632.5U patent/CN207393337U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876919A (en) * | 2017-11-09 | 2018-04-06 | 北京海纳川汽车部件股份有限公司 | The manufacture method and piston of piston |
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