CN202833596U - Forged piece of crankshaft - Google Patents
Forged piece of crankshaft Download PDFInfo
- Publication number
- CN202833596U CN202833596U CN 201220504434 CN201220504434U CN202833596U CN 202833596 U CN202833596 U CN 202833596U CN 201220504434 CN201220504434 CN 201220504434 CN 201220504434 U CN201220504434 U CN 201220504434U CN 202833596 U CN202833596 U CN 202833596U
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- China
- Prior art keywords
- crank
- crankshaft
- equilibrium block
- utility
- model
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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.)
- Expired - Lifetime
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- Forging (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a forged piece of a crankshaft. The forged piece of the crankshaft comprises a main axle neck, a connecting rod axle neck, cranks, balance blocks, a small head and a large head, wherein the balance blocks are arranged on the first crank, the fourth crank, the fifth crank and the eighth crank; the width of a single edge of each balance block is reduced by 1.5-2.5mm; and the demolding angle of the each balance block is 1-1.5 degrees. The forged piece of the crankshaft disclosed by the utility model can reduce the subsequent finishing time of the crankshaft by reducing the width of the single edge of each balance block and reducing a withdrawal angle of each balance block, and meanwhile, the service life of the finished tool also can be prolonged.
Description
Technical field
The utility model relates to a kind of manufacturing of forging, is specifically related to a kind of forge piece of bent axle.
Background technique
Be used for bent axle on the motor car engine normally obtains first bent axle by forging blank, again by car, mill, product that the fine finishing such as mill obtains bent axle.Bent axle generally forms (see figure 1) by main journal 11, rod journal 12, crank 13, equilibrium block 14, microcephaly 15 and major part 16 etc.Main journal 11 is used for supporting bent axle, and crank 13 is used for connecting main journal 11 and rod journal 12, and the crank 13 at one of them rod journal 12 and its two ends and front and back main journal 11 consist of a crank throw.Equilibrium block 14 is added on the crank 13, is used for unbalanced centrifugal force and the centrifugal moment of balance crankshaft, all right balance part reciprocal inertia force that has.Neither on each crank, to add equilibrium block, should be determined on a case-by-case basis.General and the bent axle of equilibrium block is made one, also can make separately, is fixed by bolts on the crank again.If the words that equilibrium block is integrally manufactured with bent axle, usually the drafting angle of equilibrium block is at 2～3 °, therefore a large amount of blank allowances is cut in the finishing man-hour requirement, so that the accurately machined time is long and make cutting-tool's used life short, manufacturing efficiency and the processing cost of manufacturing enterprise also are greatly affected.
The model utility content
The purpose of this utility model is the defective that overcomes prior art, and a kind of forge piece of bent axle is provided, and it can reduce the follow-up accurately machined time, and cutting-tool's used life also can prolong simultaneously.
The technological scheme that realizes above-mentioned purpose is: a kind of forge piece of bent axle, comprise main journal, rod journal, crank, equilibrium block, microcephaly and major part, described equilibrium block is positioned on the first crank, four-throw, the 5th crank and the 8th crank, wherein, monolateral 1.5～the 2.5mm that dwindles of the width of each described equilibrium block, and the demoulding angle of each equilibrium block is 1～1.5 °.
The technological scheme of the forge piece of bent axle of the present utility model adopts the One-sided Widths that reduces equilibrium block and the drafting angle that reduces equilibrium block, can reduce the subsequent fine process time of bent axle, and accurately machined cutting-tool's used life also can prolong simultaneously.
Description of drawings
Fig. 1 is the structural representation of the forge piece of conventional bent axle;
Fig. 2 is the structural representation of the forge piece of bent axle of the present utility model;
Fig. 3 be among Fig. 2 A-A to sectional view;
Fig. 4 is the Structure Comparison schematic representation (thick black line is the equilibrium block of change after good) of the equilibrium block of equilibrium block and prior art in the forge piece of bent axle of the present utility model.
Embodiment
In order to make those skilled in the art can understand better the technical solution of the utility model, below in conjunction with accompanying drawing its embodiment is described in detail:
See also Fig. 2 to Fig. 4, the forge piece of a kind of bent axle of the present utility model comprises main journal 11, rod journal 12, crank 13, some equilibrium blocks 14 ', microcephaly 15 and major part 16.Wherein, crank 13 has eight, equilibrium block 14 ' is positioned on the first crank 131, four-throw 134, the 5th crank 135 and the 8th crank 138, and the monolateral L of dwindling of the width of each equilibrium block 14 ' is 1.5～2.5mm, and the demoulding angle [alpha] of each equilibrium block 14 ' is 1～1.5 °.
Machining allowance is not more few better, also will meet simultaneously the technique of forging, if chipping allowance adds the crooked and offsetting that produces when forging very little, adds generation casting skin phenomenon in the time of may making fine finishing.Compare the width of each equilibrium block on the original crankshaft forging spare, the forge piece of a kind of bent axle of the present utility model meets again the requirement that forges technique by being 1.5～2.5mm with the monolateral L of dwindling of the width of each equilibrium block when machining allowance reduces.In addition the drafting angle of each equilibrium block is reduced to 1～1.5 ° by 2～3 ° of prior art, by reducing of drafting angle, also can reduce subsequent fine machining allowance, thereby can reduce the subsequent fine process time of bent axle, accurately machined cutting-tool's used life also can prolong simultaneously.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the utility model, and be not to be used as restriction of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model the above embodiment's variation, modification.
Claims (1)
1. the forge piece of a bent axle, comprise main journal, rod journal, crank, equilibrium block, microcephaly and major part, described equilibrium block is positioned on the first crank, four-throw, the 5th crank and the 8th crank, it is characterized in that, monolateral 1.5～the 2.5mm that dwindles of the width of each described equilibrium block, and the demoulding angle of each equilibrium block is 1～1.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220504434 CN202833596U (en) | 2012-09-27 | 2012-09-27 | Forged piece of crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220504434 CN202833596U (en) | 2012-09-27 | 2012-09-27 | Forged piece of crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833596U true CN202833596U (en) | 2013-03-27 |
Family
ID=47945309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220504434 Expired - Lifetime CN202833596U (en) | 2012-09-27 | 2012-09-27 | Forged piece of crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833596U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791088A (en) * | 2015-03-27 | 2015-07-22 | 安徽江淮汽车股份有限公司 | Engine front end driving system |
| CN105508502A (en) * | 2016-01-04 | 2016-04-20 | 中国重汽集团济南动力有限公司 | Five-cylinder diesel engine crankshaft balance system |
| WO2017089977A1 (en) * | 2015-11-24 | 2017-06-01 | Bharat Forge Limited | A forged crankshaft and a process of making it |
| CN107120350A (en) * | 2017-06-15 | 2017-09-01 | 天润曲轴股份有限公司 | Near-net-shape casting forging bent axle |
-
2012
- 2012-09-27 CN CN 201220504434 patent/CN202833596U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791088A (en) * | 2015-03-27 | 2015-07-22 | 安徽江淮汽车股份有限公司 | Engine front end driving system |
| CN104791088B (en) * | 2015-03-27 | 2018-07-20 | 安徽江淮汽车集团股份有限公司 | A kind of motor head drive system |
| WO2017089977A1 (en) * | 2015-11-24 | 2017-06-01 | Bharat Forge Limited | A forged crankshaft and a process of making it |
| CN105508502A (en) * | 2016-01-04 | 2016-04-20 | 中国重汽集团济南动力有限公司 | Five-cylinder diesel engine crankshaft balance system |
| CN105508502B (en) * | 2016-01-04 | 2017-11-07 | 中国重汽集团济南动力有限公司 | A kind of five cylinder Diesel engine crankshaft counterbalance systems |
| CN107120350A (en) * | 2017-06-15 | 2017-09-01 | 天润曲轴股份有限公司 | Near-net-shape casting forging bent axle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
|
| CX01 | Expiry of patent term |