CN101020224A - Crankshaft forging die - Google Patents
Crankshaft forging die Download PDFInfo
- Publication number
- CN101020224A CN101020224A CN 200710078286 CN200710078286A CN101020224A CN 101020224 A CN101020224 A CN 101020224A CN 200710078286 CN200710078286 CN 200710078286 CN 200710078286 A CN200710078286 A CN 200710078286A CN 101020224 A CN101020224 A CN 101020224A
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- Prior art keywords
- overlap
- wall
- mould
- die
- crankshaft
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Abstract
The crankshaft forging die has one flash gutter comprising one flash bridge and one flash bin set around the die cavity and in the die joint between the upper die and the lower die. Inside the flash gutter, one raised wall beyond the die joint is set in one side of the upper die or the lower die and in the location corresponding to the flash bin of die cavity for the crankshaft balancing block. Compared with available technology, the wall structure alters the metal flow direction and increases the horizontal flow resistance, and this results in the possibility of adopting relatively small size blank, raised material utilization rate and lowered energy source consumption.
Description
Technical field
The present invention relates to the die forging in the forging field, be specifically related to the mould of crankshaft forging.
Background technology
In the mould of bent axle forging and forming technology,,, be provided with the flash gutters that constitutes by overlap bridge portion and overlap storehouse portion along the impression periphery at the die joint place of its mould upper and lower mould according to traditional mode.Overlap bridge portion is in the flash gutters and the direct-connected clearance plane of impression, and this clearance plane is made of each more shallow concave surface of upper and lower mould corresponding position, and excess metal is extruded by this clearance plane and formed overlap, and it can produce resistance and make metal be full of impression.Overlap storehouse portion is the groove round overlap bridge periphery, and this groove is made of each darker concave surface of upper and lower mould corresponding position, and it is used to hold unnecessary metal material and finally can coincide and forging molding with impression to guarantee the bent axle base.Yet, existing this class flash gutters structure, can only could produce bigger one-tenth form drag in the bent axle die-forging forming later stage, and the horizontal restraint power to the blank metal that is produced in the early stage that is shaped is very limited, make material flow to overlap storehouse portion by overlap bridge portion prematurely, cause the filling molding deficiency of crankshaft counter balance on its short transverse, also just become the main forming defects of crankshaft forging.Therefore, in order to guarantee the good shaping at crankshaft forging balance weight position, can only realize by increasing the blanking specification at present.And the increase of blanking specification will certainly cause a large amount of wastes of material, the particularly energy.According to statistics, when adopting existing flash gutters structure, the stock utilization of crankshaft forging is the highest to be less than 75%.Material and energy utilization rate are low, and the production cost height is to be badly in need of the difficult problem that will overcome in the enterprise of present crankshaft forging.
Summary of the invention
At the deficiencies in the prior art, the purpose of this invention is to provide a kind of mould that can improve the crankshaft forging of crankshaft forging stock utilization and energy savings.
Its technical scheme is a kind of like this mould of crankshaft forging.Its aspect identical with existing mold is, the die joint place of the upper and lower mould of this mould is provided with by overlap bridge portion and the flash gutters that constituted round the overlap storehouse portion of this overlap bridge portion periphery along its impression die cavity periphery.Its improvements are that in flash gutters, the former overlap storehouse portion of the die cavity part both sides of corresponding crankshaft counter balance place is provided with the body of wall above its die joint in counterdie (perhaps patrix) side; Between the recess that corresponding former overlap storehouse portion locates in the body of wall of this protrusion and the patrix (perhaps counterdie), the suitable gap of height of its width and overlap bridge portion is arranged.That is to say, former overlap storehouse portion place in the die cavity part both sides of corresponding crankshaft counter balance, actually each darker space that concave surface constituted of the sort of reason upper and lower mould, keep original concave surface and another side has been the narrower clearance space that body of wall constituted of protrusion on one side changed into.
Compared with prior art, owing to originally described wall body structure was being set up in the very limited former overlap bridge portion outside of the horizontal restraint power of blank metal, so, just can be at the die-forging forming initial stage by changing the flow direction of metal, the metal that is outwards flowed in this place produces powerful bottom horizontal flow sheet resistance, to be similar to the mode of " extruding ", force originally being shaped to flow to the metal of overlap storehouse portion easily in early days then flow to the die cavity depths, filling performance is increased substantially.Like this, just can adopt less blank specification to obtain qualified forging, stock utilization has just improved naturally, and energy resource consumption has also just had reduction.Because this wall body structure can produce huge bottom horizontal flow sheet resistance, so we are called the resistance wall with this wall body structure.
The present invention is further illustrated below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the counterdie structural representation in the utility model;
Fig. 2 be among Fig. 1 M-M to profile (comprising patrix and counterdie);
Fig. 3 be among Fig. 2 N-N to profile;
Fig. 4 is position shown in the A-A among Fig. 1 (rotation) (upper and lower mould) amplification profile;
Fig. 5 is position shown in the B-B among Fig. 1 (upper and lower mould) amplification profile;
Fig. 6 is position shown in the C-C among Fig. 1 (upper and lower mould) amplification profile.
The specific embodiment
Embodiment 1 (with reference to figure 1,2,3,4):
A kind of mould of crankshaft forging.Die joint 56 places of the upper and lower mould of this mould are provided with by overlap bridge portion 4 and the flash gutters that constituted round the overlap storehouse portion 7 of these overlap bridge portion 4 peripheries along its impression die cavity 3 peripheries.In flash gutters of the present invention, portion 7 places, former overlap storehouse of the die cavity part both sides of corresponding crankshaft counter balance are provided with body of wall 1 above its die joint 56 (obviously, where necessary, this body of wall 1 need be stepped down for forging die jogger hole 2) in counterdie 5 one sides; Between the recess at corresponding portion 7 places, former overlap storehouse, the suitable gap h3 of height of its width and overlap bridge portion 4 is arranged in the body of wall 1 of this protrusion and the patrix 6.That is to say, portion 7 places, former overlap storehouse in the die cavity part both sides of corresponding crankshaft counter balance, cancelled former overlap of the prior art storehouse portion 7 actually, but promptly this original overlap storehouse portion 7 has not been shut, but this has been made into to the structure suitable with overlap bridge portion 4.
In conjunction with understanding to superiority of the present invention, after those skilled in the art has seen above-mentioned disclosure, be can understand fully of the present invention; In conjunction with other conditioned disjunction requirements, an also mould of designing surely substantially with the identical crankshaft forging of the present invention.
Because described overlap storehouse portion is used to hold unnecessary metal material, finally can coincide and the structure of forging molding with impression to guarantee the bent axle base, its concrete numerical value can be according to unnecessary blank adjustment.Therefore, the concave surface coupling of the former overlap storehouse portion of the patrix that counterdie resistance wall body of wall 1 height h not only should be corresponding with reality, and gap h between the two
3Also need consider the problem of holding unnecessary metal material.Be right after the height h of the overlap bridge portion 4 of this resistance wall body of wall 1 side
1Can equate its width b with existing
1Promptly can equate with existing width, also can be according to the actual conditions adjustment.Corresponding to the gap width n of resistance wall body of wall 1 side can with the height h of overlap bridge portion 4
1Equate, also can be more a little bit smaller than the latter.
Usually, the span of counterdie resistance wall body of wall 1 height h is 10mm≤h≤30mm (its concrete numerical value should according to unnecessary blank adjustment); Gap h in the body of wall 1 of the protrusion of counterdie 5 and patrix 6 between the former recess at corresponding portion 7 places, overlap storehouse
3Scope is 2mm≤h
3≤ 6mm, scope is 2mm≤h preferably
3≤ 3.5mm.
Further, have influence on for the existence of reason resistance wall not the normal use of mould, to reach best effect.In the mould in this specific embodiment, be right after resistance wall body of wall 1 side, certain gradient α is arranged at overlap bridge portion 4 edges.Obviously, concrete number range still needs to determine according to corresponding actual conditions and requirement.Usually, 0 °≤α≤45 °; Be preferably 0 °≤α≤20 °.
When actual design, for making things convenient for Mould Machining, two lateral surfaces of the resistance wall body of wall 1 of impression die cavity 3 can flush (with reference to figure 2) with the lateral surface of forging die.In addition, mainly be the medial surface of body of wall 1 owing to what metal was played effect of contraction, and the influence of left and right sides face and not obvious, therefore in the ordinary course of things, the left and right sides face gap width n of this resistance wall body of wall 1
1, answer the gap width n wide (comparison diagram 5 and Fig. 4) of specific resistance wall body of wall 1 medial surface.If decide continuation and uniformity in order not influence excess metal and to get rid of die cavity like this, prevent to produce defectives such as backflow folding in the die forging later stage.
Except that the position that has the resistance wall, all the other positions still keep conventional flash gutters structure (with reference to figure 6).The height h2 of its overlap storehouse portion 7 also needs to hold unnecessary metal material certainly.
Embodiment 2:
A kind of mould of crankshaft forging.Die joint 56 places of the upper and lower mould of this mould are provided with by overlap bridge portion 4 and the flash gutters that constituted round the overlap storehouse portion 7 of these overlap bridge portion 4 peripheries along its impression die cavity 3 peripheries.In flash gutters of the present invention, portion 7 places, former overlap storehouse of the die cavity part both sides of corresponding crankshaft counter balance are provided with body of wall 1 above its die joint 56 (obviously, where necessary, this body of wall 1 need be stepped down for forging die jogger hole 2) in patrix 6 one sides; Between the recess at corresponding portion 7 places, former overlap storehouse, the suitable gap of width of its width and overlap bridge portion 4 is arranged in the body of wall 1 of this protrusion and the counterdie 5.
Obviously, the difference among this example and the embodiment only is, resistance wall wherein is positioned on the patrix 6 of mould (because obvious, accompanying drawing is not drawn).Therefore, remaining feature is all identical with embodiment 1 with the attention main points.
Bent axle with a kind of little car is an example below, and the front and back by its stock utilization are to recently further specifying good effect of the present invention.
Adopt the stock utilization contrast of resistance wall front and back
| The blank specification | Stock utilization | |
| Adopt conventional flash gutters structure | Φ95 | ?71.5％ |
| Adopt the resistance wall construction | Φ82.5 | ?85％ |
In addition, the present invention not only stock utilization is enhanced, and has saved a large amount of energy, and the size of this crankshaft forging is accurate, and surface smoothness is good, and prolongation is also arranged die life.
Claims (6)
1, a kind of mould of crankshaft forging, the die joint of the upper and lower mould of this mould (56) is located, be provided with by overlap bridge portion (4) and the flash gutters that constituted round the overlap storehouse portion (7) of this overlap bridge portion (4) periphery along its impression die cavity (3) periphery, it is characterized in that, in described flash gutters, the former overlap storehouse portion (7) of the die cavity part both sides of corresponding crankshaft counter balance locates, and is provided with body of wall (1) above its die joint (56) in counterdie (5) one sides; Between the former recess that corresponding overlap storehouse portion (7) locates in the body of wall of this protrusion (1) and the patrix (6), the suitable gap (h of height of its width and described overlap bridge portion (4) is arranged
3).
2, a kind of mould of crankshaft forging, the die joint of the upper and lower mould of this mould (56) is located, be provided with by overlap bridge portion (4) and the flash gutters that constituted round the overlap storehouse portion (7) of this overlap bridge portion (4) periphery along its impression die cavity (3) periphery, it is characterized in that, in described flash gutters, the former overlap storehouse portion (7) of the die cavity part both sides of corresponding crankshaft counter balance locates, and is provided with body of wall (1) above its die joint (56) in patrix (6) one sides; Between the former recess that corresponding overlap storehouse portion (7) locates in the body of wall of this protrusion (1) and the counterdie (5), the suitable gap (h of height of its width and described overlap bridge portion (4) is arranged
3).
3, the mould of crankshaft forging according to claim 1 and 2 is characterized in that, the scope of the height of described body of wall (h) is 10mm≤h≤30mm; The body of wall (1) that protrude described (6) in counterdie (5) or patrix is with the gap (h between the former recess that overlap storehouse portion (7) corresponding in patrix (6) or the counterdie (5) locates
3) scope is 2mm≤h
3≤ 6mm.
4, the mould of crankshaft forging according to claim 1 and 2 is characterized in that, being right after in body of wall (1) side at described overlap bridge portion (4) edge has a gradient (α), and its number range is 0 °≤α≤45 °.
5, the mould of crankshaft forging according to claim 3, it is characterized in that, the body of wall (1) that protrude described (6) in counterdie (5) or patrix is with the gap (h between the former recess that overlap storehouse portion (7) corresponding in patrix (6) or the counterdie (5) locates
3) scope is 2mm≤h
3≤ 3.5mm.
6, the mould of crankshaft forging according to claim 4 is characterized in that, the number range of described gradient (α) is 0 °≤α≤20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710078286 CN101020224A (en) | 2007-03-14 | 2007-03-14 | Crankshaft forging die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710078286 CN101020224A (en) | 2007-03-14 | 2007-03-14 | Crankshaft forging die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101020224A true CN101020224A (en) | 2007-08-22 |
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ID=38708146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710078286 Pending CN101020224A (en) | 2007-03-14 | 2007-03-14 | Crankshaft forging die |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823116A (en) * | 2010-05-11 | 2010-09-08 | 林素伟 | Forging process for engine crankshaft of excavator |
| CN101947625A (en) * | 2010-09-10 | 2011-01-19 | 西南大学 | Forging die for manufacturing high-precision micro-vehicle crank shafts and manufacturing method thereof |
| CN102172716A (en) * | 2011-01-06 | 2011-09-07 | 重庆大学 | Heavy truck front axle bending die |
| CN102274890A (en) * | 2010-06-10 | 2011-12-14 | 株式会社神户制钢所 | Bending die, and apparatus and method for manufacturing automotive suspension arm using the same |
| CN101862802B (en) * | 2009-04-20 | 2012-01-04 | 上海汇众汽车制造有限公司 | Preforging die for automobile rear lower control arm and forging method thereof |
| CN102699262A (en) * | 2012-06-07 | 2012-10-03 | 北京机电研究所 | Material converging method for G2500 crankshaft in pre-forging die |
| CN102837164A (en) * | 2012-09-22 | 2012-12-26 | 山东泰金精密成型制品有限公司 | Forging roll combined forming method of crank shaft for automobile engine and special upset die |
| CN103192014A (en) * | 2013-03-21 | 2013-07-10 | 无锡透平叶片有限公司 | Structure of titanium alloy large-scale rib die forging |
| CN103406481A (en) * | 2013-08-19 | 2013-11-27 | 安徽安簧机械股份有限公司 | Passenger vehicle steering knuckle precise forging die for hammer forging |
| CN105127351A (en) * | 2015-10-22 | 2015-12-09 | 南车资阳机车有限公司 | Upper bending die for forging round crank shaft |
| CN105764629A (en) * | 2013-11-21 | 2016-07-13 | 新日铁住金株式会社 | Production method for forged crank shaft |
| CN105798222A (en) * | 2016-05-05 | 2016-07-27 | 中国科学院金属研究所 | Hobbing cutter ring forging mold and forging method for shield tunneling machine |
| CN106363124A (en) * | 2016-12-09 | 2017-02-01 | 衡阳市大成锅炉有限公司 | Camshaft machining process and forging die |
| CN106862457A (en) * | 2017-01-19 | 2017-06-20 | 安徽铖友汽车零部件制造有限公司 | Vapor-permeable type forging mold |
| CN106862458A (en) * | 2017-01-19 | 2017-06-20 | 安徽铖友汽车零部件制造有限公司 | Forging mold based on fillet structure |
| CN108436011A (en) * | 2018-05-28 | 2018-08-24 | 温州三连汽车零部件有限公司 | Half-closed automobile gearbox gear forging and molding mold |
| CN109226624A (en) * | 2018-08-29 | 2019-01-18 | 江阴南工锻造有限公司 | A kind of eccentric shaft and its moulding process |
| CN110576133A (en) * | 2019-08-20 | 2019-12-17 | 顺科新能源技术股份有限公司 | Method and equipment for forming cylindrical part of sheet body |
| CN113245492A (en) * | 2021-05-19 | 2021-08-13 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Preparation method of large-scale integral frame forging die and extrusion hole expanding method |
-
2007
- 2007-03-14 CN CN 200710078286 patent/CN101020224A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862802B (en) * | 2009-04-20 | 2012-01-04 | 上海汇众汽车制造有限公司 | Preforging die for automobile rear lower control arm and forging method thereof |
| CN101823116A (en) * | 2010-05-11 | 2010-09-08 | 林素伟 | Forging process for engine crankshaft of excavator |
| CN102274890B (en) * | 2010-06-10 | 2015-04-01 | 株式会社神户制钢所 | Bending die, and apparatus and method for manufacturing automotive suspension arm using the same |
| CN102274890A (en) * | 2010-06-10 | 2011-12-14 | 株式会社神户制钢所 | Bending die, and apparatus and method for manufacturing automotive suspension arm using the same |
| CN101947625B (en) * | 2010-09-10 | 2012-07-04 | 西南大学 | Forging die for manufacturing high-precision micro-vehicle crank shafts and manufacturing method thereof |
| CN101947625A (en) * | 2010-09-10 | 2011-01-19 | 西南大学 | Forging die for manufacturing high-precision micro-vehicle crank shafts and manufacturing method thereof |
| CN102172716A (en) * | 2011-01-06 | 2011-09-07 | 重庆大学 | Heavy truck front axle bending die |
| CN102699262A (en) * | 2012-06-07 | 2012-10-03 | 北京机电研究所 | Material converging method for G2500 crankshaft in pre-forging die |
| CN102837164A (en) * | 2012-09-22 | 2012-12-26 | 山东泰金精密成型制品有限公司 | Forging roll combined forming method of crank shaft for automobile engine and special upset die |
| CN103192014A (en) * | 2013-03-21 | 2013-07-10 | 无锡透平叶片有限公司 | Structure of titanium alloy large-scale rib die forging |
| CN103406481A (en) * | 2013-08-19 | 2013-11-27 | 安徽安簧机械股份有限公司 | Passenger vehicle steering knuckle precise forging die for hammer forging |
| CN105764629B (en) * | 2013-11-21 | 2017-05-31 | 新日铁住金株式会社 | The manufacture method of crankshaft forging |
| CN105764629A (en) * | 2013-11-21 | 2016-07-13 | 新日铁住金株式会社 | Production method for forged crank shaft |
| CN105127351A (en) * | 2015-10-22 | 2015-12-09 | 南车资阳机车有限公司 | Upper bending die for forging round crank shaft |
| CN105798222A (en) * | 2016-05-05 | 2016-07-27 | 中国科学院金属研究所 | Hobbing cutter ring forging mold and forging method for shield tunneling machine |
| CN105798222B (en) * | 2016-05-05 | 2018-01-16 | 中国科学院金属研究所 | A kind of hob cutter for shield machine cutter ring forging mold and forging method |
| CN106363124A (en) * | 2016-12-09 | 2017-02-01 | 衡阳市大成锅炉有限公司 | Camshaft machining process and forging die |
| CN106862457A (en) * | 2017-01-19 | 2017-06-20 | 安徽铖友汽车零部件制造有限公司 | Vapor-permeable type forging mold |
| CN106862458A (en) * | 2017-01-19 | 2017-06-20 | 安徽铖友汽车零部件制造有限公司 | Forging mold based on fillet structure |
| CN108436011A (en) * | 2018-05-28 | 2018-08-24 | 温州三连汽车零部件有限公司 | Half-closed automobile gearbox gear forging and molding mold |
| CN109226624A (en) * | 2018-08-29 | 2019-01-18 | 江阴南工锻造有限公司 | A kind of eccentric shaft and its moulding process |
| CN110576133A (en) * | 2019-08-20 | 2019-12-17 | 顺科新能源技术股份有限公司 | Method and equipment for forming cylindrical part of sheet body |
| CN113245492A (en) * | 2021-05-19 | 2021-08-13 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Preparation method of large-scale integral frame forging die and extrusion hole expanding method |
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