CN101549384B - Roll forging technology for producing roll forging parts with length exceeding maximum permissible length of roll forging machine - Google Patents

Roll forging technology for producing roll forging parts with length exceeding maximum permissible length of roll forging machine Download PDF

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Publication number
CN101549384B
CN101549384B CN 200910009307 CN200910009307A CN101549384B CN 101549384 B CN101549384 B CN 101549384B CN 200910009307 CN200910009307 CN 200910009307 CN 200910009307 A CN200910009307 A CN 200910009307A CN 101549384 B CN101549384 B CN 101549384B
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CN
China
Prior art keywords
roll
forging
roll forging
road
length
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CN 200910009307
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Chinese (zh)
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CN101549384A (en
Inventor
蒋鹏
胡福荣
余光中
付殿禹
曹飞
吴忠林
魏百江
Original Assignee
北京机电研究所
宁波蜗牛锻造有限公司
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Priority to CN 200910009307 priority Critical patent/CN101549384B/en
Publication of CN101549384A publication Critical patent/CN101549384A/en
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Publication of CN101549384B publication Critical patent/CN101549384B/en

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Abstract

The invention discloses a roll forging technology, namely, a roll forging method for roll forging super-long shaft parts in sections, comprising the following steps: the length of the roll forging part exceeds the maximum permissible length of a roll forging machine; firstly, first roll forging and second roll forging form the rear half part of the roll forging part, namely the first roll forging squashes the rear half part of the roll forging part, and the second roll forging rounds the squashed part of the rear half part of the roll forging part; then, third roll forging and fourth roll forging form the front half part of the roll forging part, namely the third roll forging squashes the front half part of the roll forging part, and the fourth roll forging rounds the squashed part of the front half part of the roll forging part; a first effective roll forging die and a second effective roll forging die are arranged behind a starting cushion block; and a third effective roll forging die and a fourth effective roll forging die are arranged at a starting position so as to ensure the rear half part of the roll forging part to be deformed before the front half part of the roll forging part. The whole forming process has two times of forming and four times of roll forging. The technology uses the existing smaller roll forging machine for roll forging super-long roll forging parts, and does not need to purchase larger roll forging machine so as to save the economic cost.

Description

A kind of roll forging parts with length surpasses the roll-forging process that forging roll allows maximum length
Technical field
The present invention relates to the roll-forging process that a kind of roll forging parts with length surpasses the roll forging part maximum length of forging roll permission, especially a kind of latter half of first shaping roll forging part, and then the first half of forming rolls forging, be used for the sectional forming roll-forging process of two passage shaping four-pass roll forging.
Background technology
Along with developing rapidly of forging industry, roll forging is a kind of new technique for forging that grows up in recent decades.Roll forging is the extensional process of blank.Blank, makes except that sub-fraction metal lateral flow blank width slightly increases after forge rolling die compression in short transverse, and most of compressed metal flows along the length direction of blank.Blank cross-sectional area by roll forging reduces, and length increases.By the characteristics of roll forging deformation as seen, it is suitable for reducing the blank cross section, as the pulling of rod member.Roll forging is a progressively continuous deformation process.During distortion, mould only contacts with the part of blank, and required deformation force is less.Roll forging is the deformation process of static pressure, and impact, vibration, noise pollution are little, and working condition is good.
Roll forging is a kind of novel process in forging, and belongs to revolution compression forming class.It is main forging process that roll forging is used for extensional more, and except that for the die forging base, to the major axis class, some forging can be realized whole shaping in the plate class.Therefore in commercial Application, roll forging is divided into base and roll forging two classes, and forging roll is the special equipment that designs, makes for roll-forging process specially.This device structure is simple, and is easy to operate, if be equipped with roll forging manipulator and microcomputer control, can realize automated production, so it has higher technology economy advantage than die forging.Every complex geometry, the forging part that thickness difference is bigger as forging such as connecting rod, front axle, crawler belts, can adopt finish roll forging technology just, prepares the manufacturing process that the forging equipment of little ability carries out shaping again.Production line by this technology is formed shows in practice, the production line small investment, and the production efficiency height, forging quality is good, and technical economic benefit is very remarkable.
General preforming roll forging, roll forging parts with length are no more than the maximum that forging roll allows, the distortion of roll forging part be from the manipulator bare terminal end by forward direction after progressively distortion, do not need the roll forging of a part part.Advantage of the present invention is that this roll-forging process can make above the axle class part of the length of forging roll requirement and can finish roller forging sheet stamping on the forging roll than ting model, helps selecting low forging roll tonnage like this, thereby saves financial cost.
Summary of the invention
Main purpose of the present invention is to propose a kind of roll forging parts with length and surpasses the roll forging method that forging roll allows maximum length.To address the above problem.
The object of the present invention is achieved like this, i.e. the first road roll forging is that latter half flattens, and earlier at the first road forge rolling die central roll forging stock material latter half, first half is indeformable; The second road roll forging is a latter half roller circle, and round at the second road central roll the part that first road flattens, first half is indeformable; Part after first road, the second road roll forging has reached the dimensional requirement of base, does not participate in distortion in the 3rd road, the 4th road roll forging process; The 3rd road roll forging is that first half flattens, and latter half has been shaped and has not participated in distortion, and Fig. 3 label is 31 positions in first half flattening deformation position such as the description of drawings book.The 4th road roll forging is a first half roller circle, and is round at the 4th road central roll the part that the 3rd road flattens, and latter half has been shaped and has not participated in distortion.The front and back position of manipulator remains unchanged in whole roll forging process.
Roll forging parts with length of the present invention, when it is characterized in that with the roll forging of D370 forging roll, the D370 forging roll allows roll forging part maximum length 570mm, and the roll forging parts with length of this claim is greater than its permissible value 570mm; During with the roll forging of D460 forging roll, the D460 forging roll allows roll forging part maximum length 710mm, and the roll forging parts with length of this claim is greater than its permissible value 710mm; During with the roll forging of D560 forging roll, the D560 forging roll allows roll forging part maximum length 870mm, and the roll forging parts with length of this claim is greater than its permissible value 870mm;
Description of drawings
Fig. 1 is that four road roll forging moulds are installed in the schematic diagram on the forging roll, and dotted line is a forging roll body part;
Location drawing when Fig. 2 has just nipped for the first road roll forging of manipulator niproll forging;
Fig. 3 is the roll forging work step figure through roll forging part after the four-pass roll forging of Fig. 1;
Fig. 4 is the location drawing that the front end of the first road forge rolling die is in the center line of two rolls;
Fig. 5 is first road, the second road forge rolling die cushion block cross sectional view along normal direction N-N direction;
Fig. 6 is the location drawing that the front end of the second road forge rolling die is in the center line of two rolls;
Fig. 7 is the location drawing that the front end of the 3rd road forge rolling die is in the center line of two rolls;
Fig. 8 is the location drawing that the front end of the 4th road forge rolling die is in the center line of two rolls;
The specific embodiment
Roll forging device of the present invention: comprise the first road roll forging mould, the second road roll forging mould, the 3rd road roll forging mould, the 4th road roll forging mould; Four road roll forging moulds of the present invention can be installed on D370, D460 or the D560 forging roll, and Z1 among Fig. 1 and Z1 ' are respectively the upper and lower roll of forging roll; N1 and N1 ' be the first road roll forging mould upper and lower roll forging die interior ring, cooperate with the roll Z1 and the Z1 ' of forging roll respectively; N2 and N2 ' be the second road roll forging mould upper and lower roll forging die interior ring, cooperate with the roll Z1 and the Z1 ' of forging roll respectively; N3 and N3 ' be the 3rd road roll forging mould upper and lower roll forging die interior ring, cooperate with the roll Z1 and the Z1 ' of forging roll respectively; N4 and N4 ' be the 4th road roll forging mould upper and lower roll forging die interior ring, cooperate with the roll Z1 and the Z1 ' of forging roll respectively.
Four road roll forging moulds are installed
The assembly relation of four road roll forging moulds on forging roll as shown in Figure 1, wherein 1 and 1 ' be forging roll body part; 2 and 2 ' be the upper and lower cushion block between the forging roll and the first road roll forging mould, be the flange of collision forging roll when preventing finger feed; 3 and 3 ' be the upper die and lower die of the first road forge rolling die, its seam be mounted in cushion block 2 and 2 ' scrobicular ring in; 4 and 4 ' be the upper die and lower die of the second road forge rolling die, its seam be installed in the first road forge rolling die 3 and 3 ' scrobicular ring in; 5 and 5 ' be the upper die and lower die of the 3rd road forge rolling die, its seam be installed in the second road forge rolling die 4 and 4 ' scrobicular ring in; 6 and 6 ' be the upper die and lower die of the 4th road forge rolling die, its seam be installed in the 3rd road forge rolling die 5 and 5 ' scrobicular ring in; The 4th road forge rolling die 6 and 6 ' scrobicular ring be that thrust ring by forging roll is fixed on the forging roll.
Concern between forging roll, roll forging mould and the manipulator clamp
Fig. 2 is the axial view along the forging roll roll, this position is the location drawing of forging roll when just having nipped the roll forging part, among the figure 32 and 32 ' be respectively the topping roll and the bottom roll of forging roll, 33 and 33 ' be respectively roll forging patrix and roll forging counterdie, 34 are the roll forging blank, 35 is the tong chops of manipulator, and 36 is manipulator.In forging roll roll forging process, Fig. 2 is the first road roll forging; The second road roll forging be manipulator niproll forging behind the traversing 80mm of the axial direction of roll, roll forging part and manipulator together again half-twist enter the second road forge rolling die and carry out roll forging; The 3rd road roll forging be manipulator niproll forging behind the traversing 80mm of the axial direction of roll, roll forging part and manipulator together again half-twist enter the 3rd road forge rolling die and carry out roll forging; The 4th road roll forging be manipulator niproll forging behind the traversing 80mm of the axial direction of roll, roll forging part and manipulator together again half-twist enter the 4th road forge rolling die and carry out roll forging.
Fig. 3 is roll forging work step figure, and label 7 is roll forging first road, and label 8 is roll forging second road, and label 9 is roll forging the 3rd road, and label 10 is roll forging the 4th road; Number in the figure A is a manipulator bare terminal end in the roll forging process, and label B is the deformed end of roll forging part.The present invention is out of shape the latter half of roll forging part in first road and second road, and first half 31 is in the 3rd road and the distortion of the 4th road.First road is that flatten the rear end, and second road is the moulding of rear end roller circle; The 3rd road is that front end flattens, and the 4th road is the moulding of front end roller circle.
Fig. 4 is forge rolling die first road, promptly among Fig. 13 and the part of 3 ' indication.The first road forge rolling die is divided into three parts, 13 and 13 of fore-end ' and be the cushion block part, its structure such as Fig. 5 partly fit with the front-end A of roll forging forging, and it mainly acts on is to play the guiding role in the first road roll forging, rather than the format roll forging.12 and 12 ' be the upper and lower mould of the first road forge rolling die, main effect is to make the first road roll forging flattening deformation.11 and 11 ' be the cushion block of the first road forge rolling die, it mainly acts on is to guarantee that the angle sum of 11,12,13 3 modules is 175 °, is installed between two keys of forging roll roll to guarantee the roll forging mould.Replace mould by cushion block, can reduce die manufacturing cost; Three effects of the first road roll forging counterdie also are like this.
Fig. 5 be among Fig. 4, Fig. 6 cushion block 13 and 13 ', 18 and 18 ' along normal direction N-N to launching view, label 41 and 41 ' be groove, its size be with Fig. 3 in label be that the round bar size of A is equipped with mutually, play the guiding role.
Fig. 6 is forge rolling die second road, promptly among Fig. 14 and the part of 4 ' indication.The second road forge rolling die is divided into three parts, 18 and 18 of fore-end ' and be the cushion block part, its structure is partly fitted with the front-end A of roll forging forging as shown in Figure 5, and it mainly acts on is to play the guiding role in the second road roll forging, rather than the format roll forging.17 and 17 ' be the upper and lower mould of the second road forge rolling die, to be the second road forge rolling die be swaged into circle with the flattening part of the first road roll forging at this road forge rolling die central roll in main effect, i.e. and the effect in second road is the roller circle.16 and 16 ' be the cushion block of the second road forge rolling die, it mainly acts on is to guarantee that the angle sum of 16,17,18 3 modules is 175 °, is installed between two keys of forging roll roll to guarantee the roll forging mould.Replace mould by cushion block, its effect is identical with the first road forge rolling die; The second road roll forging counterdie and the second road roll forging patrix symmetry act on identical with patrix.
Fig. 7 is forge rolling die the 3rd road, promptly among Fig. 15 and the part of 5 ' indication.The 3rd road forge rolling die is divided into two parts, and 20 and 20 of fore-end ' be effective forge rolling die part mainly is that to make label in the 3rd road forge rolling die be the part flattening deformation that makes label 31 in 9 the roll forging part, rather than the format roll forging.19 and 19 ' be the cushion block of the 3rd road forge rolling die, main effect is that to make 19 and 20 fanlike die block sum be 175 °, is installed between two keys of forging roll roll to guarantee the roll forging mould.Replace mould by cushion block, its effect is identical with first and second road forge rolling die; The 3rd road forge rolling die counterdie and the 3rd road roll forging patrix symmetry, the counterdie effect is identical with patrix.
Fig. 8 is forge rolling die the 4th road, promptly among Fig. 16 and the part of 6 ' indication.The 4th road forge rolling die is divided into two parts, 23 and 23 of fore-end ' be effective forge rolling die part, mainly be in the 4th road forge rolling die among Fig. 3 label be to make the part roll forging of label 31 circular in 10 the roll forging part, i.e. the effect in the 4th road is the roller circle.22 and 22 ' be the cushion block of the 4th road forge rolling die, main effect is that to make 22 and 23 fanlike die block sum be 175 °, is installed between two keys of forging roll roll to guarantee the roll forging mould.Replace mould by cushion block, its effect is identical with first, second and third road forge rolling die; The 4th road forge rolling die counterdie and the 4th road roll forging patrix symmetry, the counterdie effect is identical with patrix.
Comprehensive the above, the invention provides the roll-forging process that a kind of roll forging parts with length surpasses the roll forging part maximum length of forging roll permission, compared with prior art, the invention belongs to the roll-forging process of segmentation roll forging, it is first roller latter half, roller first half again, two passages are shaped and divide the technology of four-pass roll forging.This technology solved on less equipment forging roll can not the roll forging superlong axes parts problem.
The above only is preferred embodiment of the present invention, and all changes of being made with claim of the present invention all should belong to covering scope of the present invention.

Claims (4)

1. a roll forging parts with length surpasses the roll forging method that forging roll allows maximum length, and the front and back position of manipulator remains unchanged in whole roll forging process, and blank is a first half near half of manipulator bare terminal end, and second half is a latter half,
It is characterized in that:
1. the first road roll forging is that latter half flattens, and earlier at the first road forge rolling die central roll forging stock material latter half, first half is indeformable;
2. the second road roll forging is a latter half roller circle, and round at the second road central roll the part that first road flattens, first half is indeformable;
3. the latter half after first road, the second road roll forging has reached the base dimensional requirement, does not participate in distortion in the 3rd road, the 4th road roll forging process;
4. the 3rd road roll forging is that first half flattens, and latter half has been shaped and has not participated in distortion;
5. the 4th road roll forging is a first half roller circle, and is promptly round at the 4th road central roll the part of the 3rd road flattening, and latter half has been shaped and has not participated in distortion.
2. roll forging parts with length as claimed in claim 1 surpasses the roll forging method that forging roll allows maximum length, it is characterized in that, during with the roll forging of D370 forging roll, it is 570mm that the D370 forging roll allows the maximum length of roll forging part, and roll forging parts with length is greater than this maximum length 570mm.
3. roll forging parts with length as claimed in claim 1 surpasses the roll forging method that forging roll allows maximum length, it is characterized in that, during with the roll forging of D460 forging roll, it is 710mm that the D460 forging roll allows the maximum length of roll forging part, and roll forging parts with length is greater than this maximum length 710mm.
4. roll forging parts with length as claimed in claim 1 surpasses the roll forging method that forging roll allows maximum length, it is characterized in that, during with the roll forging of D560 forging roll, it is 870mm that the D560 forging roll allows the maximum length of roll forging part, and roll forging parts with length is greater than this maximum length 870mm.
CN 200910009307 2009-02-18 2009-02-18 Roll forging technology for producing roll forging parts with length exceeding maximum permissible length of roll forging machine CN101549384B (en)

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CN 200910009307 CN101549384B (en) 2009-02-18 2009-02-18 Roll forging technology for producing roll forging parts with length exceeding maximum permissible length of roll forging machine

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Publication number Priority date Publication date Assignee Title
CN110538880A (en) * 2019-08-28 2019-12-06 天津市中重科技工程有限公司 cross rolling process for large shaft wedge

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CN102274921B (en) * 2011-05-13 2013-04-17 北京机电研究所 Method for forming train shaft forgings
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
CN102784878B (en) * 2012-09-03 2014-11-05 北京机电研究所 Roll forging process for solid forging hand brake lever of rail wagon
CN105964851B (en) * 2016-06-30 2017-08-22 吉林大学 Integral expansion extruding Driving axle housing side is rounded roller forging sheet stamping method
CN106424510B (en) * 2016-10-21 2019-04-26 北京机电研究所有限公司 The design method of lorry axle roll forging roll forging mold
CN106623739B (en) * 2016-10-21 2018-06-05 北京机电研究所 Lorry axle roll forging technique
DE102017116570B4 (en) * 2017-03-22 2019-01-17 Sms Group Gmbh Stretching and stretching mill
CN108080547B (en) * 2017-12-15 2019-05-14 清华大学 A kind of long-axis forging prefabricated blank method and device

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CN110538880A (en) * 2019-08-28 2019-12-06 天津市中重科技工程有限公司 cross rolling process for large shaft wedge

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