CN101837412A - Roll-forging process for performing automobile front axle - Google Patents
Roll-forging process for performing automobile front axle Download PDFInfo
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- CN101837412A CN101837412A CN200910119858A CN200910119858A CN101837412A CN 101837412 A CN101837412 A CN 101837412A CN 200910119858 A CN200910119858 A CN 200910119858A CN 200910119858 A CN200910119858 A CN 200910119858A CN 101837412 A CN101837412 A CN 101837412A
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Abstract
The invention discloses a roll-forging process for performing an automobile front axle, which is characterized in that: the shapes of the sections of a bent axle 2 and a flanged beam 4 are close to those of finished forgings through roll forging; the wide sheet part of a spring seat 3 has been formed; and one end, serving as a roll-forging clamping head, of fists 1 at the two ends of the spring seat 3 does not deform, while the other end form a rectangular blank. The roll-forging process comprises the steps that: in the process of first-pass roll-forging, the wide sheet part of the spring seat is formed, and the other parts of the spring seat are in a rectangular shape; and in the process of second-pass roll-forging, the spring seat part does not deform, and the shapes of the sections of the components, except roll-forging stub bars, are close to those of the finished forgings. The process makes the deformation of the forgings of the automobile front axle completed mostly before die forging, and has completed the difficulty of deformation (the wide sheet of the spring seat), but has an allowance for the subsequent die forging, so that the shape of the automobile front axle can be perfected in the die forging and the high-quality and inexpensive forgings can be obtained finally.
Description
Technical field
The present invention relates to a kind of roll-forging process for performing automobile front axle.Especially be applied to the field of forging, make the automobile front axle forging before crooked, finish-forging are shaped, all the other cross sectional shapes are near the automobile front axle roll-forging process of final forging requirement except that the roll forging stub bar.
Background technology
Automobile front axle belongs to the major axis type heavy forged piece, in heavily block front axle generally more than 100Kg, and complex-shaped, spring base partly has dark and narrow cross section, belongs to difficult shaping forging in forging.Roll forging belongs to the revolution compression molding, and be used for extensional is main forging process more, is reduced by the blank sectional area of roll forging, and length increases.Roll forging is to utilize local deformation progressively to accumulate to finish bulk deformation, so resistance of deformation reduces greatly, can use multi-pass deformation to be superimposed as large deformation.Therefore roll forging is forged very suitable for automobile front axle.
In recent years, the application of roll-forging process in the automobile front axle Forging Technology constantly increases.At present, the application of roll-forging process in the automobile front axle Forging Technology mainly contains aspect following two.
First kind is preforming roll forging technology.Figure 11 is the forging drawing after the first road roll forging, and figure middle section 41 corresponding finish-forging spare spring base parts do not have distortion during roll forging; Cross section 40 corresponding curved boom parts, cross section 42 corresponding I-beam parts, these positions are flattened oval when roll forging first road.Figure 12 is the forging drawing after the second road roll forging, and figure middle section 44 corresponding finish-forging spare spring base parts do not have distortion; Cross section 43 corresponding curved boom parts, cross section 45 corresponding I-beam parts, these positions are half-twist after the first road roll forging is finished, and roller is circular when the second road roll forging.By the roll forging of two passages, the circular rod material roller is swaged into the long-pending blank of unequal section, cross sectional shape still is circular, the sectional area size distributes the sectional area according to forging to change.The shape of forging is finished by die forging on the forcing press, and follow-up die forging work step is a bulk deformation.This technology needs more than ten thousand tons hotdie forging press or die hammer more than 10 tons when die forging, investment is big, and the construction period is long, and the forging stock utilization is at 75%-85%.
Second kind is precise roll-forging technology.By three or the roll forging of four-pass, will be except that partially-formed the putting in place the two ends fist part, comprising large deformation zones such as spring base, I-beam, curved booms, Fig. 1 is an automobile front axle finish-forging spare schematic diagram, wherein 2 is curved booms, the 3rd, spring base, the 4th, I-beam.Figure 13 is the roller forging drawing behind the precise roll-forging, and the I-beam part of the spring base part of the curved boom part of 46,47 expressions, 48 expressions and 49,50 expressions all is shaped among the figure as can be seen.This technology has been finished the distortion more than 90% of whole forging by roll forging, and follow-up die forging does not all have distortion in the overwhelming majority of forging.Therefore, this technology only needs 2500 tons of friction presses when die forging, and stock utilization is more than 90%.The characteristics of this technology are that equipment investment is little, and the construction period is short, has economic benefit clearly, and have more advantage on the saving cost.But the complexity of rollforming makes the full level of forging be not so good as first kind of technology, and the uncertain factor that is run into when die debugging is more.
Summary of the invention
Technical problem to be solved by this invention is that a kind of roll-forging process for performing automobile front axle that is applicable to that main forging equipment adopts forging roll to combine with die hammer more than 10 tons is being provided on the basis of above-mentioned automobile front axle roll-forging process, finish the part of preformed forging outside material removal head by this roll-forging process and all passed through distortion, be 2 among Fig. 1,3,4, and shape is bulk deformation near the requirement of finish-forging spare in the follow-up die forging.Figure 14 is the spring base partial cross section, the 52nd, and rollforming shape, the 53rd, finish-forging shaping form; Figure 15 is the I-beam partial cross section, the 54th, and rollforming shape, the 55th, finish-forging shaping form; Figure 16 is the curved boom partial cross section, the 56th, and rollforming shape, the 57th, finish-forging shaping form;
The object of the present invention is achieved like this.The performing automobile front axle roll forging is finished by the roll forging deformation of two passages.Its technical process is: one of the circular cross-section bar that is heated to malleable temperature is by the manipulator clamping of the automatic forging roll of ZGD1000, send into the first road forge rolling die and carry out the first road roll forging, finish distortion back half-twist, send into the second road forge rolling die again and carry out the second road roll forging.After finishing, two passage roll forging promptly finish preform roll forging overall process.
Adopt roll-forging process of the present invention, the distortion when follow-up die forging is little, and therefore required blow energy is significantly less than preforming roll forging technology, with regard to die hammer impacts number of times, can reduce half.And stock utilization can reach more than 90% greater than preforming roll forging technology, not only cuts down the consumption of energy and economical with materials.Compare with precise roll-forging technology, the full degree of forging obviously improves, and the process debugging cycle shortens greatly; Because the roll forging passage reduces, the blank diameter selected value is also corresponding to be reduced, thus the hitting power when having reduced the die forging of stub bar part.
Description of drawings
Fig. 1 is an automobile front axle deformation place feature description;
Fig. 2 is that the twice forge rolling die is installed in the schematic diagram on the ZGD1000 forging roll, the body part of forging roll during double dot dash line;
Fig. 3 is the first road forge rolling die schematic diagram;
Fig. 4 is the first road forge rolling die typical section figure;
Fig. 5 is the forging design drawing after the first road roll forging is finished;
Fig. 6 is the second road forge rolling die schematic diagram;
Fig. 7 is the second road forge rolling die typical section figure;
Fig. 8 is the forging design drawing after the second road roll forging is finished;
Fig. 9 is whole forging drawing;
Figure 10 is a finish-forging spare spring base sectional view;
Figure 11 is the preforming roll forging first road roller forging drawing;
Figure 12 is the preforming roll forging second road roller forging drawing;
Figure 13 is the roller forging drawing behind the precise roll-forging;
Figure 14 is spring base cross section rollforming shape and finish-forging shaping form schematic diagram;
Figure 15 is I-beam cross section rollforming shape and finish-forging shaping form schematic diagram;
Figure 16 is curved boom cross section rollforming shape and finish-forging shaping form schematic diagram;
The specific embodiment
The concrete enforcement of the present invention is example with a certain automobile front axle typical case forging.
Roll forging device of the present invention comprises the first road forge rolling die and the second road forge rolling die, is installed on the ZGD1000 forging roll.Fig. 2 is the installation signal of twice forge rolling die, and 5 is first road forge rolling dies among the figure, and 6 is second road forge rolling dies, the 7th, and topping roll center line, the 8th, bottom roll center line.
Fig. 3 is the first road forge rolling die, and patrix 9 is flat back die with counterdie 10 and central angle is identical, and mold materials is 5CrNiMo.For the ease of processing with install, 9 and 10 are divided into two at circumferencial direction, make the central angle of every mould be less than or equal to 90 °.Part is not used at first road forge rolling die mounting center angle on forging roll, with joining ring 11 and 12 polishings.The material of joining ring 11 and 12 is 45 steel.
Marked the position of 13,14,15,16 4 typical sections on the forge rolling die expanded view among Fig. 3, Fig. 4 is the schematic diagram of these four typical sections.13A, 14A, 15A, 16A represent patrix, and 13B, 14B, 15B, 16B represent counterdie.As seen in Figure 4,13,15,16 hole shape is rectangle to the first road forge rolling die in the cross section, and having only cross section 14 is inverted T shapes.Cross section 14 place parts are the spring base part, and the narrow slit place among Fig. 4 between 14A and the 14B will form the wide plate part of spring base, the wide finish-forging spare size that reached of plate of the forging spring base that the hole shape roll forging by cross section 14 becomes.
The die cavity width of 13A, 15A, 16A is consistent with the diameter of roll forging blank, makes blank can enter die cavity smoothly.Cavity lateral has 1 ° to 2 ° draft angle.
Draft angle among the 14A is got 5 ° to 7 °, the spring base backing strip width one in cavity bottom width and the finish-forging spare to.Hole shape shown in 14 has the effect of forcing broadening, and the wide plate part of the spring base that is used to be shaped also is the wideest part in the automobile front axle forging, is one of difficult point of forging forming.
Fig. 5 is the roll forging part schematic diagram after the first road roll forging is finished, the 17th, be used for the stub bar of clamping during roll forging, four typical sections after 18,19,20,21 respectively corresponding 13,14,15,16 roll forging.19 as can be seen from figure, and after the first road roll forging was finished, the wide plate of spring base formed.
Fig. 6 is the second road forge rolling die, and patrix 22 is flat back die with counterdie 23 and central angle is identical.Because roll forging deformation constantly extends blank, so the second road forge rolling die is bigger than the first road forge rolling die central angle, mould part has taken forging roll dress mould central angle, does not need to use and joins ring.Mold materials is 5CrNiMo.
Marked the position of 24,25,26,27,28,29 6 typical sections on the forge rolling die expanded view among Fig. 6, Fig. 7 is the schematic diagram in these six cross sections.Wherein, the transition portion of 24 expression front axle fists and curved boom, 25 expression curved boom parts, 26 expression spring base parts, 27 and 28 expression I-beam parts, the fist part of the non-clamping head end of 29 expressions.24A, 25A, 26A, 27A, 28A, 29A are patrixes, and 24B, 25B, 26B, 27B, 28B, 29B are counterdies.
The cavity shape in cross section 24,25,27,28 is near finish-forging spare, sectional area is greater than the cross section of finish-forging spare relevant position, the die cavity width is less than the finish-forging relevant position, make that blank can be put into the finish-forging die cavity smoothly behind the rollforming, the die cavity height is greater than finish-forging relevant position 2-3mm, and blank continues to produce plastic deformation when making finish-forging.Therefore, finished its preform in the roll forging of above-mentioned position.
The shape in cross section 26 is consistent with cross section 14, and the spring base part does not participate in distortion in second road.But two sections becomes 90 ° of angles, represent the first road roll forging finish after forging need to carry out the second road roll forging again behind the half-twist.This spinning movement is finished by the roll forging manipulator of being responsible for the clamping forging.
Fig. 8 is the roll forging part schematic diagram after the second road roll forging is finished, the 17th, be used for the stub bar of clamping during roll forging, six typical sections after 30,31,32,33,34,35 respectively corresponding 24,25,26,27,28,29 roll forging.Fig. 8 and Fig. 5 all have distortion in the part except that spring base during the second road roll forging more as can be seen.
Fig. 9 is the whole forging drawing of front axle.Cross section 36 is the curved boom part, the cross section 31 in the corresponding diagram 8; Cross section 38 is the I-beam part, the cross section 33 in the corresponding diagram 8; Shape after the roll forging is near the shape behind the finish-forging as can be seen.
37 is the cross section of spring base part, the cross section 32 in the corresponding diagram 8, and Figure 10 is the cross section of finish-forging spare spring base, the 39th, the wide plate part of spring base, the wide plate part has been shaped after the roll forging as can be seen.
In sum, the invention provides a kind of automobile front axle that makes and when roll forging, reach preformed roll-forging process.This technology has been finished the major part distortion of whole Forging Technology when roll forging, and the wide plate part of the difficult point-spring base of forging distortion, I-beam part have all reached the size of finish-forging spare.But, make forging ratio technology in the past on final full level and stock utilization increase for follow-up die forging provides the possibility that continues to produce plastic deformation.
Claims (6)
1. roll-forging process for performing automobile front axle; It is characterized in that:
1. the first road roll forging is that spring base part roller is become the cross section is the T font, and the wide size of plate has reached forging requirement size, and the remainder roller becomes rectangle;
2. the second road roll forging is that the spring base part does not participate in distortion, and remainder is near finally requiring shape, and sectional area leaves surplus;
2. a kind of roll-forging process for performing automobile front axle as claimed in claim 1 is characterized in that using the ZGD1000 forging roll, by two passage roll forging, finishes performing automobile front axle;
3. a kind of roll-forging process for performing automobile front axle as claimed in claim 1 is characterized in that when the first road roll forging the wide size roll forging of plate of spring base part is put in place;
4. a kind of roll-forging process for performing automobile front axle as claimed in claim 1 is characterized in that when the first road roll forging square-section width and the original bar equal diameters of part beyond the spring base, highly less than the height of the second road respective cross-section;
5. a kind of roll-forging process for performing automobile front axle as claimed in claim 1 is characterized in that when the second road roll forging, automobile front axle curved boom partial cross section shape reduces according to the shape height of the appropriate section of forging, and width increases;
6. a kind of roll-forging process for performing automobile front axle as claimed in claim 1 is characterized in that when the second road roll forging, automobile front axle I-beam partial cross section shape reduces according to the shape height of the appropriate section of forging, and width increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910119858A CN101837412A (en) | 2009-03-20 | 2009-03-20 | Roll-forging process for performing automobile front axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910119858A CN101837412A (en) | 2009-03-20 | 2009-03-20 | Roll-forging process for performing automobile front axle |
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| Publication Number | Publication Date |
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| CN101837412A true CN101837412A (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910119858A Pending CN101837412A (en) | 2009-03-20 | 2009-03-20 | Roll-forging process for performing automobile front axle |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430678A (en) * | 2011-11-08 | 2012-05-02 | 北京机电研究所 | Roll forging method for series toothed rail forgings of coal mining machine |
| CN102581209A (en) * | 2012-03-01 | 2012-07-18 | 湖北神力锻造有限责任公司 | Process method for forging low door type front axle of heavy commercial vehicle |
| CN104550585A (en) * | 2014-12-15 | 2015-04-29 | 贵州安大航空锻造有限责任公司 | Rolling forming method of structural steel thick-wall ring forging |
| CN104972051A (en) * | 2015-06-24 | 2015-10-14 | 陈文建 | Forging technology of output shaft |
| CN106623739A (en) * | 2016-10-21 | 2017-05-10 | 北京机电研究所 | Railway truck shaft forming roll forging process |
| CN107186138A (en) * | 2016-03-15 | 2017-09-22 | 德西福格成型技术有限公司 | Bend roll forging |
| CN108015208A (en) * | 2017-12-28 | 2018-05-11 | 湖北三环车桥有限公司 | Automobile front axle seamless segmented roll forging molding method |
| CN110340273A (en) * | 2019-06-06 | 2019-10-18 | 佛山科学技术学院 | A kind of forging method of aluminium alloy car control arm |
| CN110494233A (en) * | 2017-04-05 | 2019-11-22 | 日本制铁株式会社 | Front axle beam and its manufacturing method |
| CN110545933A (en) * | 2017-04-05 | 2019-12-06 | 日本制铁株式会社 | Front bridge and manufacturing method thereof |
| CN110545934A (en) * | 2017-04-05 | 2019-12-06 | 日本制铁株式会社 | front bridge and manufacturing method thereof |
| CN112846029A (en) * | 2020-12-18 | 2021-05-28 | 桂林福达重工锻造有限公司 | Front shaft bending preforming process adopting U-shaped widening preforming structure |
| CN112916779A (en) * | 2021-01-25 | 2021-06-08 | 北京机电研究所有限公司 | Precise roll forging forming process for axle for rail transit |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430678A (en) * | 2011-11-08 | 2012-05-02 | 北京机电研究所 | Roll forging method for series toothed rail forgings of coal mining machine |
| CN102430678B (en) * | 2011-11-08 | 2014-06-18 | 北京机电研究所 | Roll forging method for series toothed rail forgings of coal mining machine |
| CN102581209A (en) * | 2012-03-01 | 2012-07-18 | 湖北神力锻造有限责任公司 | Process method for forging low door type front axle of heavy commercial vehicle |
| CN102581209B (en) * | 2012-03-01 | 2014-06-18 | 湖北神力锻造有限责任公司 | Process method for forging low door type front axle of heavy commercial vehicle |
| CN104550585A (en) * | 2014-12-15 | 2015-04-29 | 贵州安大航空锻造有限责任公司 | Rolling forming method of structural steel thick-wall ring forging |
| CN104972051A (en) * | 2015-06-24 | 2015-10-14 | 陈文建 | Forging technology of output shaft |
| CN107186138A (en) * | 2016-03-15 | 2017-09-22 | 德西福格成型技术有限公司 | Bend roll forging |
| US10583476B2 (en) | 2016-03-15 | 2020-03-10 | Hirschvogel Umformtechnik Gmbh | Bending forge rolling |
| CN107186138B (en) * | 2016-03-15 | 2019-07-12 | 德西福格成型技术有限公司 | It is bent roll forging |
| CN106623739A (en) * | 2016-10-21 | 2017-05-10 | 北京机电研究所 | Railway truck shaft forming roll forging process |
| CN106623739B (en) * | 2016-10-21 | 2018-06-05 | 北京机电研究所 | Lorry axle roll forging technique |
| CN110494233A (en) * | 2017-04-05 | 2019-11-22 | 日本制铁株式会社 | Front axle beam and its manufacturing method |
| CN110545933A (en) * | 2017-04-05 | 2019-12-06 | 日本制铁株式会社 | Front bridge and manufacturing method thereof |
| CN110545934A (en) * | 2017-04-05 | 2019-12-06 | 日本制铁株式会社 | front bridge and manufacturing method thereof |
| CN108015208A (en) * | 2017-12-28 | 2018-05-11 | 湖北三环车桥有限公司 | Automobile front axle seamless segmented roll forging molding method |
| CN110340273A (en) * | 2019-06-06 | 2019-10-18 | 佛山科学技术学院 | A kind of forging method of aluminium alloy car control arm |
| CN112846029A (en) * | 2020-12-18 | 2021-05-28 | 桂林福达重工锻造有限公司 | Front shaft bending preforming process adopting U-shaped widening preforming structure |
| CN112916779A (en) * | 2021-01-25 | 2021-06-08 | 北京机电研究所有限公司 | Precise roll forging forming process for axle for rail transit |
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Application publication date: 20100922 |