CN105522351B - A kind of extension shaft and its method of manufacturing technology - Google Patents

A kind of extension shaft and its method of manufacturing technology Download PDF

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Publication number
CN105522351B
CN105522351B CN201610057336.0A CN201610057336A CN105522351B CN 105522351 B CN105522351 B CN 105522351B CN 201610057336 A CN201610057336 A CN 201610057336A CN 105522351 B CN105522351 B CN 105522351B
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China
Prior art keywords
shaft
hole
dowel hole
shaft parts
protective case
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CN105522351A (en
Inventor
吴焱杰
王文俊
孙丁柱
张财
薛奎
王克敏
许宏伟
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Publication of CN105522351A publication Critical patent/CN105522351A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

The present invention relates to parts machining technical field, disclose a kind of extension shaft method of manufacturing technology, this method is based on two identicals original axis to be lengthened, one section of shaft part is intercepted respectively according to setting from two original axis, meet to lengthen after two shaft part connections and require, and two shaft parts are connected by the way of grafting, and it is welded and fixed in joint;In addition; this method also includes processing protective case, circumferentially opens up on the protective sleeve on the multiple plug welding holes arranged in a ring, the shaft part of protective case set upon connection; and plug welding hole is alignd with the joint of two shaft parts, then at plug welding hole and the two ends of protective case are welded.It improves the axiality of extension shaft, the intensity and service life of extension shaft are improved.The invention also discloses a kind of using extension shaft made from the extension shaft method of manufacturing technology of the invention provided, axiality is good, and intensity is high, and service life is long.

Description

A kind of extension shaft and its method of manufacturing technology
Technical field
The present invention relates to parts machining technical field, more particularly to a kind of extension shaft and its method of manufacturing technology.
Background technology
In the new product development design phase, to reduce development cost and shortening product development cycle, in new product designs number Before freezing according to (digital-to-analogue), new product concept design is substantially carried out.After the completion of the concept product design phase, for checking design side The feasibility of case, it usually needs associated verification is carried out to design and basic data acquisition works, now needs to make related Exemplar carries out the checking of relevant design scheme.Usual way is to realize that exemplar makes by developing sample-piece mold, but by Longer in the mould development one side cycle, there is certain risk in another aspect design, also in Qualify Phase if now Product development cost and risk can be increased by carrying out mould development, therefore general not by the way of mold developing.
Such as on the existing automobile a length of 600mm of certain shaft element, in order to which new product designs exploitation checking needs, now needs to add Long 50mm, i.e. total length reach 650mm, to meet concept sample car test requirements document.In this case, current technology means are To existing parts by the way of lengthening is pulled open in direct cut-out, as shown in figure 1, existing parts are cut into two sections along center line, Then 50mm lengthening section is welded between two sections of parts, the exploitation for lengthening mould is eliminated.But what this mode was obtained There is following defect in extension shaft:
One is welding region high concentration, causes welding stress not discharge effectively, increases parts risk of breakage, shadow Ring the service life of the parts after the transformation of the way;
Two be due to manufacture mismachining tolerance, and the axiality of lengthening section and original parts is difficult to ensure so that extension shaft Axiality is poor.
The content of the invention
It is an object of the invention to provide a kind of extension shaft and its method of manufacturing technology, shaft element is added to lengthen to improve Quality, service life and axiality afterwards.
To achieve these goals, the invention provides following technical scheme:
A kind of method of manufacturing technology of extension shaft, it is characterised in that comprise the following steps:
A. identical two pieces original axis to be lengthened is chosen, respectively marked as A axles and B axle, A axles are cut along the longitudinal centerline It is cut into isometric A1 shaft parts and A2 sections;Moved along B axle longitudinal centre line to side after pre-determined distance, draw lower and B axle longitudinal center The parallel line of cut of line, longer B1 shaft parts and shorter B2 shaft parts are cut into along the line of cut by B axle;
B. A1 shaft parts are chosen and B1 shaft parts is standby, and multi-diameter shaft is processed into one end of a wherein shaft part, in another shaft part End face on process for the multi-diameter shaft grafting coordinate circular groove;
C. the end face cooperated respectively in A1 shaft parts and B1 shaft parts carries out bevel processing, and by A1 shaft parts and B1 shaft parts Welded after grafting in joint, form C axles;
D. protective case is processed, the size of protective case meets it and is socketed in behind C axles outside to be coordinated with C shaft clearances, and in protection Put and open up multiple plug welding holes, multiple plug welding holes are arranged in a ring along the circumference of protective case;
E. protective case is socketed on C axles, and circumference where plug welding hole is alignd with the joint of A1 shaft parts and B1 shaft parts, Then welded at each plug welding hole;
F. it is welded and fixed in one end of protective case with A1 shaft parts, the other end is welded and fixed with B1 shaft parts.
Preferably, the method for manufacturing technology of the extension shaft is further comprising the steps of:
The first dowel hole is processed on A1 shaft parts, the second dowel hole is processed on B1 shaft parts;
When processing protective case, the 3rd dowel hole and the 4th dowel hole are processed on the protective sleeve;
When protective case is socketed on C axles, by the 3rd dowel hole and the first dowel hole co-axially align, and by the 4th Dowel hole and the second dowel hole co-axially align;Then the first alignment pin is passed through into the 3rd dowel hole and the first dowel hole After be welded and fixed, by the second alignment pin through the 4th dowel hole with being welded and fixed after the second dowel hole, and the weldering of alignment pin Termination process is carried out before being welded at plug welding hole.
Preferably, the axis of the axis and the 4th dowel hole of the 3rd dowel hole is mutually perpendicular to.
Preferably, when being welded at plug welding hole, along C axle longitudinal centre lines direction, peak using plug welding hole is welds Point, then adds welding fluid once in the position every 90 degree counterclockwise along the edge of plug welding hole.
Preferably, the plug welding hole is four, and the angle between every two neighboring plug welding hole is 90 degree, and in welding When, plug welding hole welding simultaneously first positioned opposite to a pair, then to the welding simultaneously of another pair plug welding hole positioned opposite.
Preferably, when the first alignment pin and the second alignment pin are welded, along C axle longitudinal centre lines direction, with corresponding fixed The peak of position pin-and-hole is welding starting point, then along the edge of dowel hole counterclockwise in the position addition every 90 degree Welding fluid is once.
Preferably, the welding material in all welding operations is J506 welding rod.
Ladder axial end and the B1 on a kind of extension shaft, including A1 shaft parts, B1 shaft parts and protective case, the A1 shaft parts Circular groove grafting on shaft part end face coordinates, and is welded and fixed to form C axles in joint;The protective case is socketed on the C axles And coordinate with the C shaft clearances, and the protective case is provided with multigroup plug welding hole, multigroup plug welding hole is along the protective case It is circumferential to arrange in a ring;And circumference where the plug welding hole aligns with the weld seam of the A1 shaft parts and the B1 shaft parts, and in institute State at plug welding hole and the two ends of the protective case are welded and fixed with the C axles respectively.
Preferably, the A1 shaft parts are provided with the first dowel hole, and the B1 shaft parts are provided with the second dowel hole, described Protective case is provided with threeth dowel hole coaxial with first dowel hole and coaxial with second dowel hole 4th dowel hole;First alignment pin is welded and fixed after passing through first dowel hole, the 3rd dowel hole, the second alignment pin It is welded and fixed after through second dowel hole, the 4th dowel hole.
Preferably, first alignment pin is vertically arranged with second alignment pin.
The beneficial effects of the present invention are:
The method of manufacturing technology for the extension shaft that the present invention is provided, lengthening is used as by the use of two identical original axis to be lengthened Basis, the extension length demand to meet axle, the shaft part intercepted from two original axis is connected by the way of grafting, is improved The axiality of extension shaft, is welded in shaft part joint, and uses protective case, is being lengthened using plug welding hole on protective case The commissure of axle is welded and fixed, and the two ends of protective case are welded and fixed with extension shaft simultaneously, and protective case improves extension shaft Intensity, reduces the risk for lengthening axle fracture, beneficial to the service life for improving extension shaft.
Present invention also offers a kind of extension shaft, the extension shaft is with A1 shaft parts and B1 shaft part grafting, with good Axiality, and there is protective case to be protected in the joint of A1 shaft parts and B1 shaft parts, optimize the stress point of joint weld seam Cloth, improves the intensity and service life of extension shaft.
Brief description of the drawings
, below will be to institute in embodiment in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art The accompanying drawing needed to use is briefly described, and the specific embodiment of the present invention will be made further specifically with reference to accompanying drawing It is bright, wherein
Fig. 1 is the structural representation of obtained extension shaft in the prior art;
Fig. 2 is the flow chart of extension shaft method of manufacturing technology provided in an embodiment of the present invention;
Fig. 3 is the front view of A axles in the embodiment of the present invention;
Fig. 4 is the front view of B axle in the embodiment of the present invention;
Fig. 5 is the front view of A1 shaft parts in the embodiment of the present invention;
Fig. 6 is the front view of B1 shaft parts in the embodiment of the present invention;
Fig. 7 is the front view of C axles in the embodiment of the present invention;
Fig. 8 is the sectional view of protective case in the embodiment of the present invention;
Fig. 9 is the front view of extension shaft in the embodiment of the present invention;
Figure 10 is the explosive view of extension shaft in the embodiment of the present invention.
Label declaration in wherein above-mentioned accompanying drawing is as follows:
1-A axles, 2-B axles, 3-C axles, 4- protective cases, 5- extension shafts, the alignment pins of 6- first, the alignment pins of 7- second;
11-A1 shaft parts, 12-A2 sections, 13- circular grooves, the dowel holes of 14- first;
21-B1 shaft parts, 22-B2 shaft parts, 23- multi-diameter shafts, the dowel holes of 24- second;
41- plug welding holes, the dowel holes of 42- the 3rd, the dowel holes of 43- the 4th;
A1-A axle longitudinal centre lines, b1-B axle longitudinal centre lines, c1-B axle lines of cut;
The step of a~f- extension shaft method of manufacturing technology.
Embodiment
In order that those skilled in the art more fully understand technical scheme, below in conjunction with specific embodiment pair This programme is further discussed in detail.
With reference to Fig. 2, the method for manufacturing technology of extension shaft provided in an embodiment of the present invention comprises the following steps:
Step a. chooses identical two pieces original axis to be lengthened, respectively marked as A axles and B axle, as shown in Figure 3 and Figure 4, A axles 1 are cut into isometric A1 shaft parts 11 and A2 sections 12 along A axle longitudinal centre lines a1;For B axle 2, along B axle longitudinal centre line B1 is moved after pre-determined distance to side, the lower B axle line of cut c1 parallel with B axle longitudinal centre line b1 is drawn, along the B axle line of cut B axle 2 is cut into longer B1 shaft parts 21 and shorter B2 shaft parts 22 by c;Wherein, the pre-determined distance moved in B axle 2 be equal to Distance and original axis in lower step in the insertion A1 of B1 shaft parts 21 shaft parts 11 is to be lengthened apart from sum.
Step b. chooses A1 shaft parts 11 and B1 shaft parts 21 are standby, and one end of a wherein shaft part is processed into multi-diameter shaft, Processed on the end face of another shaft part for the circular groove that the multi-diameter shaft grafting coordinates;In embodiments of the present invention, the A1 shaft parts 11 end face has been processed into circular groove 13, and multi-diameter shaft 23 has been processed into one end of the B1 shaft parts, as shown in Figure 5 and Figure 6.
The end face that step c. cooperates in A1 shaft parts 11 and B1 shaft parts 21 respectively carries out bevel processing, wherein, groove Preferably V-butt, then will be welded after A1 shaft parts and B1 shaft part grafting in joint, form C axles 3, as shown in Figure 7;
Step d. processes protective case 4, and with reference to Fig. 8, the size of protective case 4 meets it and is socketed in behind the outside of C axles 3 between C axles 3 Gap coordinates, and opens up on protective case 4 multiple plug welding holes 41, and multiple plug welding holes 41 are arranged in a ring along the circumference of protective case;
Protective case 4 is socketed on C axles 3 by step e., and by the place circumference of plug welding hole 41 and A1 shaft parts 11 and B1 shaft parts 21 Joint alignment, then welded at each plug welding hole 41;
Step f. is welded and fixed in one end of protective case 4 with A1 shaft parts 11, and the other end is welded with B1 shaft parts 21 It is fixed, that is, obtain extension shaft 5 as shown in Figure 9.
By extension shaft made from the above method, because two shaft parts are connected by the way of grafting, it is ensured that preferably same Axle degree, and protection nested structure is added, protection reinforcement is carried out to two shaft part commissures, the intensity of reinforced shaft is improved and uses the longevity Life.
Further, the extension shaft method of manufacturing technology provided in the embodiment of the present invention, it is further comprising the steps of:
As shown in Figure 10, the first dowel hole 14 is processed on A1 shaft parts, the second dowel hole 24 is processed on B1 shaft parts; When processing protective case 4, the 3rd dowel hole 42 and the 4th dowel hole 43 are processed on protective case 4;By 4 sets of protective case When being connected on C axles 3, by the 3rd dowel hole 42 and the co-axially align of the first dowel hole 14, and by the 4th dowel hole 43 and The co-axially align of two dowel hole 24;Then the first alignment pin 6 is passed through and welded after the 3rd dowel hole 42 and the first dowel hole 14 Fixation is connect, by the second alignment pin 7 through the 4th dowel hole 43 with being welded and fixed after the second dowel hole 24, and the weldering of alignment pin Termination process is carried out before being welded at plug welding hole 41.Further carried by the positioning action of the first alignment pin 6 and the second alignment pin 7 The high axiality of extension shaft, beneficial to the quality of the extension shaft of offer.
Preferably, the axis of the axis and the 4th dowel hole 43 of the 3rd dowel hole 42 is mutually perpendicular to, and is made Obtain first alignment pin 6 and second alignment pin 7 is mutually perpendicular to arrangement, beneficial to raising locating effect.
Preferably, when being welded at plug welding hole 41, along the longitudinal centre line direction of C axles 3, using the peak of plug welding hole 41 as Starting point is welded, then welding fluid is added once in the position every 90 degree counterclockwise along the circumference of plug welding hole 41, so plug Welding fluid at weldering order, plug welding hole is more uniform, and the stress of commissure is more uniform, improves welding quality.
Further, in embodiments of the present invention, the plug welding hole 41 is four, between every two neighboring plug welding hole Angle be 90 degree, and in welding, plug welding hole 41 first positioned opposite to a pair welding simultaneously, then positioned opposite to another pair Plug welding hole 41 simultaneously welding, beneficial to optimization weld when commissure stress.
In addition, when first alignment pin 6 and second alignment pin 7 are welded, using welding side same as described above Formula, i.e., along C axle longitudinal centre lines direction, using the peak of corresponding dowel hole as welding starting point, then along dowel hole Welding fluid is added in the position every 90 degree once in edge counterclockwise.
In all welding operations, welding material uses J506 welding rod, and DC welder is welded, and answers welding rod to put before weldering Enter in baking oven and heat, heating-up temperature is preferably 350 DEG C, preferably 1 hour heat time, be put into incubator and carry out after welding rod heating Isothermal holding is used in case welding, and is welded using DC reverse connection.
The embodiment of the present invention additionally provides a kind of extension shaft, as shown in Figure 9 and Figure 10, including A1 shaft parts 11, B1 shaft parts 21 With protective case 4, the ladder axial end on the A1 shaft parts 11 coordinates with the circular groove grafting on the B1 shaft parts end face, and in docking Place is welded and fixed to form C axles;The protective case 4 is socketed on the C axles and coordinated with the C shaft clearances, and the protective case 4 Multigroup plug welding hole 41 is provided with, multiple plug welding holes 41 are arranged in a ring along the circumference of the protective case 4, and the plug welding hole 41 place circumference align with the weld seam of the A1 shaft parts 11 and the B1 shaft parts 21, and at the plug welding hole 41 and described The two ends of protective case 4 are welded and fixed with the C axles respectively.The extension shaft axiality is good, and intensity is high, and service life is long.
Preferably, the plug welding hole 41 is four groups, and the angle between plug welding hole 41 described in per two adjacent groups is 90 degree.
Further, the first dowel hole 14 is additionally provided with the A1 shaft parts 11, the B1 shaft parts 21 are determined provided with second Position pin-and-hole 24, the protective case 4 provided with threeth dowel hole 42 coaxial with first dowel hole 14 and with it is described The 4th coaxial dowel hole 43 of second dowel hole 24;First alignment pin 6 is positioned through first dowel hole the 14, the 3rd It is welded and fixed after pin-and-hole 42, the second alignment pin 7 is welded and fixed after passing through second dowel hole 24, the 4th dowel hole 43. 7 pairs of being connected for extension shaft each several part of first alignment pin 6 and second positioning serve the effect of positioning, to enter One step improves the axiality of extension shaft.
Preferably, first alignment pin 6 is vertically arranged with second alignment pin 7, it is possible to increase locating effect.
Construction, feature and the action effect of the present invention, above institute is described in detail according to diagrammatically shown embodiment above Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range shown in drawing, it is every according to structure of the invention Want made change, or be revised as the equivalent embodiment of equivalent variations, still without departing from specification with illustrating during covered spirit, All should be in protection scope of the present invention.

Claims (10)

1. a kind of method of manufacturing technology of extension shaft, it is characterised in that comprise the following steps:
A. identical two pieces original axis to be lengthened is chosen, respectively marked as A axles and B axle, A axles are cut into along the longitudinal centerline Isometric A1 shaft parts and A2 sections;Moved along B axle longitudinal centre line to side after pre-determined distance, draw lower and B axle longitudinal centre line flat Capable line of cut, longer B1 shaft parts and shorter B2 shaft parts are cut into along the line of cut by B axle;
B. A1 shaft parts are chosen and B1 shaft parts is standby, and multi-diameter shaft is processed into one end of one of shaft part, in another shaft part The circular groove coordinated with the multi-diameter shaft grafting is processed on end face;
C. the end face cooperated respectively in A1 shaft parts and B1 shaft parts carries out bevel processing, and by A1 shaft parts and B1 shaft part grafting Welded afterwards in joint, form C axles;
D. protective case is processed, the size of protective case meets it and is socketed in behind C axles outside to be coordinated with C shaft clearances, and on the protective sleeve Multiple plug welding holes are opened up, multiple plug welding holes are arranged in a ring along the circumference of protective case;
E. protective case is socketed on C axles, and the circumference where plug welding hole is alignd with the joint of A1 shaft parts and B1 shaft parts, so Welded afterwards at each plug welding hole;
F. it is welded and fixed in one end of protective case with A1 shaft parts, the other end is welded and fixed with B1 shaft parts.
2. the method for manufacturing technology of extension shaft according to claim 1, it is characterised in that further comprising the steps of:
The first dowel hole is processed on A1 shaft parts, the second dowel hole is processed on B1 shaft parts;
When processing protective case, the 3rd dowel hole and the 4th dowel hole are processed on the protective sleeve
When protective case is socketed on C axles, positioned by the 3rd dowel hole and the first dowel hole co-axially align, and by the 4th Pin-and-hole and the second dowel hole co-axially align;Then the first alignment pin is passed through and welded after the 3rd dowel hole and the first dowel hole Fixation is connect, by the second alignment pin through the 4th dowel hole with being welded and fixed after the second dowel hole, and the welding of alignment pin Journey is carried out before being welded at plug welding hole.
3. the method for manufacturing technology of extension shaft according to claim 2, it is characterised in that the axle of the 3rd dowel hole The axis of line and the 4th dowel hole is mutually perpendicular to.
4. the method for manufacturing technology of extension shaft according to claim 3, it is characterised in that when being welded at plug welding hole, along C Axle longitudinal centre line direction, using the peak of plug welding hole as welding starting point, then exists counterclockwise along the edge of plug welding hole Every 90 degree of position addition welding fluid once.
5. the method for manufacturing technology of extension shaft according to claim 4, it is characterised in that the plug welding hole is four, often Angle between the two neighboring plug welding hole is 90 degree, and in welding, plug welding hole first positioned opposite to a pair is applied simultaneously Weldering, then to the welding simultaneously of another pair plug welding hole positioned opposite.
6. the method for manufacturing technology of extension shaft according to claim 5, it is characterised in that fixed in the first alignment pin and second During the pin welding of position, along C axle longitudinal centre lines direction, using the peak of corresponding dowel hole as welding starting point, then along positioning Welding fluid is added in the position every 90 degree once in the edge of pin-and-hole counterclockwise.
7. the method for manufacturing technology of extension shaft according to claim 6, it is characterised in that the welding in all welding operations Material is J506 welding rod.
8. a kind of extension shaft, it is characterised in that including A1 shaft parts, B1 shaft parts and protective case, the ladder shaft end on the A1 shaft parts Face coordinates with the circular groove grafting on the B1 shaft parts end face, and is welded and fixed to form C axles in joint;The protective case is socketed in Coordinate on the C axles and with the C shaft clearances, and the protective case is along provided with multigroup plug welding hole, multigroup plug welding hole edge The axial direction of the protective case is arranged in a ring;And circumference where the plug welding hole and the A1 shaft parts and the weld seam of the B1 shaft parts Alignment, and at the plug welding hole and the two ends of the protective case are welded and fixed with the C axles respectively.
9. extension shaft according to claim 8, it is characterised in that the A1 shaft parts are provided with the first dowel hole, described B1 shaft parts are provided with the second dowel hole, and the protective case is provided with threeth dowel hole coaxial with first dowel hole And fourth dowel hole coaxial with second dowel hole;First alignment pin is through first dowel hole, described It is welded and fixed after 3rd dowel hole, the second alignment pin is passed through and welded after second dowel hole, the 4th dowel hole It is fixed.
10. extension shaft according to claim 9, it is characterised in that first alignment pin hangs down with second alignment pin It is straight to set.
CN201610057336.0A 2016-01-26 2016-01-26 A kind of extension shaft and its method of manufacturing technology Active CN105522351B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108944331A (en) * 2018-07-12 2018-12-07 安徽江淮汽车集团股份有限公司 A kind of torsion beam of automobile shortening reforming technology method

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CN107253513A (en) * 2017-06-02 2017-10-17 昆山吉海实业公司 Container securing extension bar
CN107838637B (en) * 2017-11-02 2019-06-11 盛瑞传动股份有限公司 A kind of cam axis processing technique

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US3791751A (en) * 1972-01-28 1974-02-12 Buffalo Brake Beam Co Rod repair splice
CN201100328Y (en) * 2007-07-27 2008-08-13 唐志坤 Coaxial axis connection structure
JP5901940B2 (en) * 2011-11-08 2016-04-13 Ntn株式会社 Welding method for outer joint member of constant velocity universal joint
CN202391790U (en) * 2011-11-22 2012-08-22 上海连成(集团)有限公司 Novel extension shaft structure of extension shaft motor
CN105033583A (en) * 2015-07-28 2015-11-11 宁波捷成轴业有限公司 Forming process method of welding shaft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108944331A (en) * 2018-07-12 2018-12-07 安徽江淮汽车集团股份有限公司 A kind of torsion beam of automobile shortening reforming technology method
CN108944331B (en) * 2018-07-12 2020-05-29 安徽江淮汽车集团股份有限公司 Shortening and modifying process method for automobile torsion beam

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