CN201106621Y - Bulging-off stress groove of engine connecting rod - Google Patents
Bulging-off stress groove of engine connecting rod Download PDFInfo
- Publication number
- CN201106621Y CN201106621Y CNU2007200457648U CN200720045764U CN201106621Y CN 201106621 Y CN201106621 Y CN 201106621Y CN U2007200457648 U CNU2007200457648 U CN U2007200457648U CN 200720045764 U CN200720045764 U CN 200720045764U CN 201106621 Y CN201106621 Y CN 201106621Y
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- connecting rod
- stress groove
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- groove
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- 230000007704 transition Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 238000012545 processing Methods 0.000 abstract description 8
- 230000002950 deficient Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 20
- 239000003638 chemical reducing agent Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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Abstract
The utility model discloses a stress slot for the expansion and fracture of an engine connecting rod, the stress slot comprises a head part arranged on a connecting rod (1) and connected with a crankshaft, the stress slot (2) is arranged on a connecting rod end surface (5) at the head part of the connecting rod (1), and the position of the stress slot is superposed with a rupture position at the head part of the connecting rod (1). On the basis of the general macrocephalic inner hole provided with a slot, the two end surfaces of the roughcast of the connecting rod are respectively added with two stress slots, three surfaces of the connecting rod are all provided with stress centralizing slots, thereby the expansion and fracture is more convenient and easier, the fracture plane is more even, the expansion and fracture effect is improved, and the quality of the expansion and fracture plane is improved. The stress slots at the two end surfaces are cast when the roughcast is produced, thus the processing cost cannot be increased, the expansion and fracture effect is greatly improved, and the defective index of the finished product is lowered.
Description
Technical field
The utility model belongs to the technical field of internal-combustion engine, particularly automobile engine construction, relates to the process structure of the connecting rod of motor, and more particularly, the utility model relates to the bloated disconnected stress groove of a kind of engine link.
Background technique
For connecting rod and the motor Qu Jinhang assembling with motor, the head of engine link must disconnect along the section at the center of crossing the connecting bar and crankshaft hole and be divided into two, and two that will separate after the assembling are fastenedly connected again.
The method that link rod head is disconnected has two kinds:
The one, the method that at present Chinese domestic a lot of automobile manufacturing enterprises are taked, promptly the CONCENTRIC REDUCER of connecting rod adopts the technology that machining is cut off, and processes seam respectively for two that separate, utilize the seam location then, separate with bolton two, the reprocessing endoporus guarantees its circularity; Take two again apart, pack into bent axle and bearing shell utilize the seam location, and be fastening at last;
The 2nd, in the flourishing countries and regions of automotive engineering level, generally adopt connecting rod CONCENTRIC REDUCER bulge-breaking process, its method is first roughing crank pin end pore, adopt a wedge tool to apply radial pressure then to big end hole, will crack at the stress concentrated position, crackle enlarges, with the connecting rod CONCENTRIC REDUCER separately, like this in assembling, because CONCENTRIC REDUCER is coarse junction plane, through closing up assembling again, rough surface can fit like a glove, and the connecting rod CONCENTRIC REDUCER can cooperate better, after process is fastenedly connected, the circularity of the endoporus that cooperates with crankshaft bearing liner just can reach a very desirable state, has improved the operating conditions of bearing shell greatly.This is a kind of advanced person's connecting rod manufacturing and assembly technology.
At present, in the connecting rod bulge-breaking process, generally the structure of Cai Yonging is that the end face of fractured connecting rod is the plane, the crankshaft hole internal recessing, i.e. stress groove, effect be stressed after produce fracture because stress is concentrated, its fracture position is determined.Its disconnected method that expands is to increase a stress groove at the major part endoporus before bloated breaking, and generally adopts broaching or lbg, and it is disconnected to expand then.In this case, have only one side that the stress groove is arranged, if guarantee the disconnected effective Organizational Structure grain orientation that just needs strict control link blank etc. that expands, higher to the technology of connecting rod blank.In addition, because the situation that expands disconnected influence, whether smooth such as cleavage plane, falling slag may be more.It is out of use falling the bigger connecting rod of solid impurity particle.Influenced yield rate, increased manufacture cost, also influential to the use of connecting rod, therefore, be necessary to solve connecting rod expand disconnected in the problems referred to above of appearance.
The model utility content
Problem to be solved in the utility model provides the bloated disconnected stress groove of a kind of engine link, its objective is when engine link, makes bulge-breaking process simpler, and disconnected better effects if expands.
To achieve these goals, the technological scheme that the utility model is taked is: this engine link that is provided is bloated, and disconnected stress groove is on the basis of traditional connnecting rod big end endoporus fluting, both ends of the surface at connecting rod increase the stress groove, such three faces (being inner hole surface, two end faces) all have the stress groove, and disconnected better effects if expands.
The described engine link disconnected stress groove that expands is located at the head that connecting rod is connected with bent axle, and described stress groove is located on the connecting rod end face of link rod head, and its position overlaps with the link rod head fracture position.
Described stress groove is located on two opposite connecting rod end faces of link rod head, and the symmetry plane of the stress groove on two opposite end faces overlaps, and with the dead in line in connecting bar and crankshaft hole.
Be located at the stress groove on the link rod head connecting rod end face, the quantity on each connecting rod end face is two, is distributed in the both sides in connecting bar and crankshaft hole, and its symmetry plane coincidence, by the center in connecting bar and crankshaft hole, and perpendicular to the connecting rod center line; Or the angle of its symmetry plane and connecting rod center line formation inclination.
Described stress groove is " V " shape groove, and promptly described stress groove is made of two crossing planes.
The stress groove of described " V " shape, the size of angle is between 60 °～120 ° between two plane of intersecting.
More specifically, the stress groove (2) of described " V " shape, the angle between two plane of intersecting is 90 °.
Little round-corner transition is adopted in the intersection on two planes of described stress groove bottom.
More specifically, the little fillet of transition of the intersection on two planes of described stress groove 2 bottoms, its radius is 0.5mm.
The utility model adopts technique scheme, on the basis of major part endoporus fluting commonly used, on two end faces of connecting rod blank, respectively increase by two stress grooves, three faces of connecting rod all have stress to concentrate groove, it is disconnected more convenient, easier to expand like this, section is more smooth, has improved the disconnected effect that expands, and has improved the quality of bloated section.Because the stress groove of both ends of the surface is to forge out when producing blank, can not increase processing cost, can improve the disconnected effect that expands simultaneously so greatly, reduced the finished product reject rate.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are made brief description:
Fig. 1 is a bar linkage structure schematic representation described in the utility model;
Fig. 2 is the side cross-sectional schematic of structure shown in Figure 1;
Fig. 3 is the schematic representation that the structure of the related stress groove of the utility model is amplified.
Be labeled as among the figure: 1, connecting rod, 2, the stress groove, 3, crankshaft hole, 4, the connecting rod center line, 5, the connecting rod end face.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and working principle, the manufacturing process of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technological scheme had more complete, accurate and deep understanding to help those skilled in the art.
As Fig. 1, Fig. 2 and the expressed structure of the present utility model of Fig. 3, the utility model is the bloated disconnected stress groove of a kind of engine link, is located at the head that is connected with bent axle of connecting rod 1, is the process structure that adopts for the new process that adapts to Machining of Connecting Rod.In Machining of Connecting Rod, promoting at present and adopting connecting rod CONCENTRIC REDUCER bulge-breaking process, its method is first roughing crank pin end pore, adopt of the crankshaft hole pressurization of a wedge tool then to major part, make this hole be subjected to very big radial pressure, owing to offered the stress groove, can produce stress in the position of groove and concentrate.Relatively be easy to generate crackle at the stress concentrated position, crackle enlarges in loading process, with the connecting rod CONCENTRIC REDUCER separately.Because that separates breaks but coarse junction plane, when closing up assembling again, rough surface can fit like a glove, the connecting rod CONCENTRIC REDUCER can cooperate better, through after being fastenedly connected, the circularity of the endoporus that cooperates with crankshaft bearing liner just can reach a very desirable state, has improved the operating conditions of bearing shell greatly.
For the structure that makes the stress groove more reasonable, make the disconnected better effects if that expands, processing technology is simpler, the technological scheme that the utility model is taked is: this engine link that is provided is bloated, and disconnected stress groove is on the basis of traditional connnecting rod big end endoporus fluting, both ends of the surface at connecting rod increase the stress groove, be equipped with the stress groove on such three faces (being the bore area of crankshaft hole, two connecting rod end faces 5 of link rod head), the better quality of the section that expands.
Its concrete structure is: as depicted in figs. 1 and 2, the described engine link disconnected stress groove 2 that expands is located on the connecting rod end face 5 of connecting rod 1 head, and its position overlaps with connecting rod 1 head fracture position.Stress groove 2 on the connecting rod end face 5 and the stress groove in the hole concur, and the fracture surface quality is good, and the fracture lines is tortuous less and more clear; Realize position fracture on request; The disconnected power that expands is less; The processing of stress groove 2 also is easy to, and technology is simpler.
The processing of above-mentioned stress groove 2 is when forging, and carries out press process with forging punches, that is to say and adopts hot pressing processing, and is convenient and easy, do not need to carry out machine cut processing, and efficient is higher.
Below be the specific embodiment that stress groove 2 is arranged:
Embodiment one:
Smooth in order to guarantee fracture surface, reduce solid impurity particle, described stress groove 2 is located on two opposite connecting rod end faces 5 of connecting rod 1 head, and the symmetry plane of the stress groove 2 on two opposite end faces overlaps, and with the dead in line in connecting bar and crankshaft hole 3.
Embodiment two:
On embodiment one basis, pass the head of whole connecting rod for the face that guarantees to disconnect, and bent axle can be installed, this fracture surface should run through the center of crankshaft hole 3, so, be located at the stress groove 2 on the connecting rod 1 head connecting rod end face 5, quantity on each connecting rod end face 5 is two, is distributed in the both sides in connecting bar and crankshaft hole 3, and its symmetry plane overlaps, by the center in connecting bar and crankshaft hole 3, and perpendicular to connecting rod center line 4; Or the angle of its symmetry plane and the 4 formation inclinations of connecting rod center line.This dual mode is by the structures shape of connecting rod.
Embodiment three:
As shown in Figure 3, accurate in order to make fracture position on embodiment one and embodiment's two basis, and make processing technology simple, and described stress groove 2 is " V " shape groove, promptly described stress groove 2 is made of two crossing planes.Its stress is easier to be concentrated, and also more is easy to generate fracture.
The stress groove 2 of described " V " shape, the angle between two plane of intersecting, i.e. θ angle among Fig. 3, its size is between 60 °～120 °.60 ° angle theta is adopted on two planes, and the stress localization effects is good, but it is poor slightly to forge the intensity of making drift, and working life is shorter; 60 ° angle theta is adopted on two planes, and the stress localization effects is relatively poor, but it is better to forge the intensity of making drift, and working life is longer.Adopt 90 ° angle theta generally speaking, its combination property is best.。
Embodiment four:
As shown in Figure 3, on embodiment three basis, little round-corner transition is adopted in the intersection on two planes of described stress groove 2 bottoms, makes that to forge the most advanced and sophisticated intensity of making drift better.This little fillet is that the radius among Fig. 3 is the circular arc of R.
Bottom land adopts the little fillet of R0.5 excessive, and the degree of depth of groove needs control, guarantees that groove is dark more good more before bloated breaking, and end product is then flat with groove place plane milling, and the surface of contact that guarantees whole end face and crankshaft journal is level and smooth continuous.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or design of the present utility model and technological scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.
Claims (8)
1, the bloated disconnected stress groove of a kind of engine link is located at the head that connecting rod (1) is connected with bent axle, and it is characterized in that: described stress groove (2) is located on the connecting rod end face (5) of connecting rod (1) head, and its position overlaps with connecting rod (1) head fracture position.
2, according to the bloated disconnected stress groove of the described engine link of claim 1, it is characterized in that: described stress groove (2) is located on two opposite connecting rod end faces (5) of connecting rod (1) head, and the symmetry plane of the stress groove (2) on two opposite end faces overlaps, and with the dead in line of connecting bar and crankshaft hole (3).
3, according to the bloated disconnected stress groove of the described engine link of claim 1, it is characterized in that: be located at the stress groove (2) on connecting rod (1) the head connecting rod end face (5), quantity on each connecting rod end face (5) is two, be distributed in the both sides of connecting bar and crankshaft hole (3), and its symmetry plane overlaps, by the center of connecting bar and crankshaft hole (3), and perpendicular to connecting rod center line (4); Or the angle of its symmetry plane and connecting rod center line (4) formation inclination.
4, according to claim 1 or the bloated disconnected stress groove of 2 or 3 described engine links, it is characterized in that: described stress groove (2) is " V " shape groove, and promptly described stress groove (2) is made of two crossing planes.
5, according to the bloated disconnected stress groove of the described engine link of claim 4, it is characterized in that: the stress groove (2) of described " V " shape, the angle between two plane of intersecting is between 60 °～120 °.
6, according to the bloated disconnected stress groove of the described engine link of claim 5, it is characterized in that: the stress groove (2) of described " V " shape, the angle between two plane of intersecting is 90 °.
7, according to claim 5 or the bloated disconnected stress groove of 6 described engine links, it is characterized in that: little round-corner transition is adopted in the intersection on two planes of described stress groove (2) bottom.
8, according to claim 5 or the bloated disconnected stress groove of 6 described engine links, it is characterized in that: the little fillet of transition of the intersection on two planes of described stress groove (2) bottom, its radius is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200457648U CN201106621Y (en) | 2007-08-30 | 2007-08-30 | Bulging-off stress groove of engine connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200457648U CN201106621Y (en) | 2007-08-30 | 2007-08-30 | Bulging-off stress groove of engine connecting rod |
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| Publication Number | Publication Date |
|---|---|
| CN201106621Y true CN201106621Y (en) | 2008-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200457648U Expired - Fee Related CN201106621Y (en) | 2007-08-30 | 2007-08-30 | Bulging-off stress groove of engine connecting rod |
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| CN (1) | CN201106621Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062142A (en) * | 2011-01-28 | 2011-05-18 | 潍坊浩泰机械有限责任公司 | All-positioning connecting rod |
| CN102619865A (en) * | 2012-04-09 | 2012-08-01 | 浙江跃进机械有限公司 | Fractured connecting rod of internal combustion engine |
| CN102840217A (en) * | 2011-06-24 | 2012-12-26 | 铃木株式会社 | Connecting rod fracture splitting method and apparatus therefor |
| CN110170715A (en) * | 2019-05-24 | 2019-08-27 | 南宫市精强连杆有限公司 | A kind of linear cutting equipment suitable for the swollen disconnected stress slot processing of connecting rod |
| CN114193090A (en) * | 2021-11-25 | 2022-03-18 | 浙江凯圣传动科技股份有限公司 | A kind of double-cone surface expansion sleeve gap processing technology |
-
2007
- 2007-08-30 CN CNU2007200457648U patent/CN201106621Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062142A (en) * | 2011-01-28 | 2011-05-18 | 潍坊浩泰机械有限责任公司 | All-positioning connecting rod |
| CN102840217A (en) * | 2011-06-24 | 2012-12-26 | 铃木株式会社 | Connecting rod fracture splitting method and apparatus therefor |
| CN102840217B (en) * | 2011-06-24 | 2015-05-27 | 铃木株式会社 | Connecting rod fracture splitting method and apparatus therefor |
| CN102619865A (en) * | 2012-04-09 | 2012-08-01 | 浙江跃进机械有限公司 | Fractured connecting rod of internal combustion engine |
| CN110170715A (en) * | 2019-05-24 | 2019-08-27 | 南宫市精强连杆有限公司 | A kind of linear cutting equipment suitable for the swollen disconnected stress slot processing of connecting rod |
| CN114193090A (en) * | 2021-11-25 | 2022-03-18 | 浙江凯圣传动科技股份有限公司 | A kind of double-cone surface expansion sleeve gap processing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C56 | Change in the name or address of the patentee |
Owner name: SAIC CHERY AUTOMOBILE CO., LTD. Free format text: FORMER NAME OR ADDRESS: QIRUI AUTOMOBILE CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui 241009, China Patentee after: Saic Chery Automobile Co., Ltd. Address before: No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui 241009, China Patentee before: Qirui Automobile Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20120830 |