CN102092259A - Method for manufacturing variable-cross-section vehicle trailing arm member - Google Patents
Method for manufacturing variable-cross-section vehicle trailing arm member Download PDFInfo
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- CN102092259A CN102092259A CN 201010579093 CN201010579093A CN102092259A CN 102092259 A CN102092259 A CN 102092259A CN 201010579093 CN201010579093 CN 201010579093 CN 201010579093 A CN201010579093 A CN 201010579093A CN 102092259 A CN102092259 A CN 102092259A
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Abstract
The invention discloses a method for manufacturing a variable-cross-section vehicle trailing arm member, comprising the following steps of: lofting and blanking: selecting a steel plate with set thickness and blanking, wherein the rolled extension direction of the blanked blank is consistent with the length direction of the variable-cross-section vehicle trailing arm member to be processed, and the blank is provided with a C-shaped axis; (2) pre-bending; (3) bending to form a U shape; (4) trimming; (5) pre-crimping: placing the trimmed blank into a pre-crimping die in a mode that the convex surface of the blank faces downwards, primarily crimping and forming on a press machine to obtain a pre-crimped piece; (6) crimping for forming: placing the pre-crimped piece into a forming crimping die in a mode that the convex surface of the blank faces downwards, primarily crimping and forming on the press machine to obtain a crimped piece; (7) reshaping: carrying out shaft sleeve end reshaping and hub end reshaping on the crimped piece in sequence on the press machine; (8) forming: placing the reshaped piece into a standard die cavity to complete final forming; and (9) welding an indent crimped seam formed through crimping and carrying out postprocessing to obtain the variable-cross-section vehicle trailing arm member. The method has the advantages of not only simplifying a forming process but also guaranteeing the manufacturing precision of the member and effectively saving the cost.
Description
Technical field
The present invention relates to the trailing arm on the vehicle Wrest bar type back axle, especially a kind of method for making of variable section vehicle trailing arm member.
Background technology
Car beam trailing arm be used for connecting bushing, turn round the important foundation member that members such as beam, Shock absorber and wheel hub stay bearing plate constitute vehicle rear axles.
Variable section vehicle trailing arm member is a hollow pipe fitting, described member comprise with axle sleeve bonded assembly sleeve end, with wheel hub adapter plate bonded assembly hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, and described vehicle trailing arm member axis is a continuous curve.
Described variable section vehicle trailing arm structure manufacture method relates to a kind of formation of hollow weld assembly, the sleeve end of member and the formation of hub end, and on the above variable section vehicle trailing arm member of member several measure-alike or inequality, round or non-circles be used to install or the making of the through hole of other purposes.
The method for making of described variable section vehicle trailing arm member is meant that this trailing arm member finishes required whole technological processes from blanking until structure manufacture.Described variable section vehicle trailing arm member generally has two kinds of manufacturing process at present, when adopting traditional process to make, generally needs half sheet of first punching press more than 2 or 2, is welded into integral body again.Need multi-step process, many, the follow-up welding requirements height of work step, and be difficult to satisfy the coherence request of member.Another is to adopt the method for making of hollow circular-tube through internal high pressure forming, its basic craft course is to wait diameter pipes to make blank, apply superhigh pressure liquid by tubing inside, and in course of exerting pressure, pass through the material of member along axis direction replenished, making pipe is required workpiece at the mold cavity internal shaping.Comparatively speaking, internal high pressure forming only needs bending, internal high pressure forming and end cut three process, and need not follow-uply weld, has certain advance, but adopt the technology controlling and process complexity of internal high pressure forming, cost of manufacture is big, also has bigger restriction at present on reality is used.
Summary of the invention
Based on the follow-up welding process requirement height of traditional manufacturing technique to structure manufacture, be difficult to satisfy the member coherence request, the inner high voltage moulding has certain advance, need not welding, making precision height, but the technology controlling and process complexity also has bigger restriction on reality is used, and the invention provides a kind of forming process, but also method for making that can guarantee the structure manufacture precision and effectively save the variable section vehicle trailing arm member of cost not only can simplified.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of method for making of variable section vehicle trailing arm member, described method for making may further comprise the steps:
1) setting-out blanking: steel plate that select to set thickness carries out blanking, and the rolling direction of the length direction of blanking and raw MAT'L is consistent;
2) pre-bending: blank is done pre-bending handle on punch die; And described blank has the shape that is figure-three after the pre-bending;
3) the U type is curved: the blank after the pre-bending is made the evagination profile that the U type curves C word member on press.
4) cut edge: C word blank level is inserted punch die, makes crimping on the C font blank and intervolves according to product and require to cut edge, and guarantees the conformability of the volume seam behind the crimping;
5) intervolve in advance: put into downwards with convex surface and intervolve mould in advance, the described mould that intervolves in advance has following shape facility: the die cavity that intervolves mould in advance comprises sleeve end and hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, the axis of described die cavity is a continuous curve, and die cavity top seam place is outer gibbosity; On press, just be rolled into type, intervolved part in advance;
6) volume that is shaped: will intervolve the part convex surface in advance and put into downwards to be shaped and intervolve mould, described shaping intervolves mould following shape facility: the die cavity that intervolves mould that is shaped comprises sleeve end and hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, the axis of described die cavity is a continuous curve, and die cavity top seam place is circular-arc; Moulding on press obtains intervolving part;
7) shaping: will intervolve part and on press, carry out sleeve end shaping and hub end shaping successively;
8) moulding: shaping piece is put into the standard die cavity finish final molding, described standard die cavity has following shape facility: the standard die cavity comprises sleeve end and hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, and the axis of described standard die cavity is a continuous curve;
8) sew on welding at the indent volume that intervolves formation, and carry out back processing, make variable section vehicle trailing arm member.
Further, in the described step 5), the middle part of the described die cavity die cavity that intervolves mould in advance is for turning round the beam linkage section, the perimeter of section of described die cavity is continuously to sleeve end and changes from small to big from turning round the beam linkage section, be continuously to hub end and change from small to big from turning round the beam linkage section, from the in-plane vertical with hub end, the axis of described die cavity is c-shaped;
In the described step 6), described shaping intervolves the middle part of die cavity die cavity of mould for turning round the beam linkage section, the perimeter of section of described die cavity is continuously to sleeve end and changes from small to big from turning round the beam linkage section, be continuously to hub end and change from small to big from turning round the beam linkage section, from the in-plane vertical with hub end, the axis of described die cavity is c-shaped;
In the described step 8), the middle part of described standard die cavity is for turning round the beam linkage section, the perimeter of section of described standard die cavity is continuously to sleeve end and changes from small to big from turning round the beam linkage section, be continuously to hub end and change from small to big from turning round the beam linkage section, from the in-plane vertical with hub end, the axis of described standard die cavity is c-shaped, from the wheel hub transverse plane, the axis of described standard die cavity is S-shaped, and the center of arc of the center of described hub end and sleeve end has offset distance D.
Certainly, according to the shape of different variable section trailing arm members, we can according to the shaped design of trailing arm member coupling intervolve mould in advance, being shaped intervolves the shape of mould and standard die cavity.
Further again, in the described step 7), the tangent line of friendship place is cut on described axis and plane, hub end place and the angle on this plane is 35 ~ 50.8
o
Further, in the described step 7), described standard die cavity comprises three cross sectional shapes continuous or segmentation changes at least.
In the described step 7), the shortest outside face of described standard die cavity plain line and described hub end and the tangent line of friendship place is cut on the plane, place and the angle on this plane is 42.2 ~ 56
oThe plain line of the longest outside face of described standard die cavity and the tangent line of friendship place is cut on plane, described hub end place and the angle on this plane is 30.6 ~ 41.8
o
In the described step 7), the angle on the spindle line of described sleeve end circular arc and described hub end plane is 104.8 ~ 125
o
In the described step 7), having the inclination angle with the angle of the spindle line of perpendicular plane, described hub end plane and described sleeve end circular arc is 0 ~ 2
o
Described cross sectional shape is one of following: 1. circular; 2. rectangle; 3. trapezoidal; 4. oval; 5. special-shaped.Certainly, also can be other cross sectional shapes.
In the described step 7), the plain line of the shortest outside face of described standard die cavity is the weld line after intervolving.
In the described step 1), the thickness of steel plate is 3 ~ 4.5 millimeters, and the mechanical property of steel plate is: yield strength σ
s=330Mpa, tensile strength sigma
s=450Mpa, stretch ratio δ=33%, hardenability value n=0.23.
The described cross section of turning round the beam linkage section is all rounded.Certainly, also can adopt other shapes.
Beneficial effect of the present invention mainly shows: simplify special-shaped complicated non-uniform member forming process, the adverse effect of welding is reduced to minimum, guarantee member conformability, promote and make precision, favourable mass production.
Description of drawings
Fig. 1 is the scheme of installation of vehicle trailing arm member.
Fig. 2 is the block diagram of variable section vehicle trailing arm member.
Fig. 3 is the lateral plan of variable section vehicle trailing arm member.
Fig. 4 is the A-A schematic cross-section of Fig. 3.
Fig. 5 is the B-B schematic cross-section of Fig. 3.
Fig. 6 is the C-C schematic cross-section of Fig. 3.
Fig. 7 is the D-D schematic cross-section of Fig. 3.
Fig. 8 is the E-E schematic cross-section of Fig. 3.
Fig. 9 is the scheme drawing that the variable section vehicle trailing arm member of wheel hub adapter plate and axle sleeve is installed.
Figure 10 is the blank scheme drawing of blanking step.
Figure 11 is the blank scheme drawing after pre-bending is handled.
Figure 12 is the birds-eye view of Figure 11.
Figure 13 is the blank scheme drawing after the reason of U type crook.
Figure 14 is the birds-eye view of Figure 13.
Figure 15 is the scheme drawing that intervolves mould in advance.
Figure 16 is the scheme drawing that intervolves part in advance.
Figure 17 is the birds-eye view of Figure 16.
Figure 18 is shaped to intervolve the scheme drawing of mould.
Figure 19 is the scheme drawing that intervolves part.
Figure 20 is the section drawing of Figure 19.
Figure 21 is the scheme drawing of standard die cavity.
Figure 22 is the scheme drawing after the moulding.
Figure 23 is the section drawing of Figure 22.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1～Figure 23, a kind of method for making of variable section vehicle trailing arm member, described method for making may further comprise the steps:
1) setting-out blanking: steel plate that select to set thickness carries out blanking, and the rolling extension direction of the blank behind the blanking is consistent with the length direction of variable section vehicle trailing arm member to be made, and described blank has c-shaped axis;
2) pre-bending: blank is done pre-bending handle on punch die;
3) the U type is curved: the blank after the pre-bending is made the U type on press curved;
4) cut edge: on punch die, make crimping and cut edge, cut edge, the conformability of the volume seam behind the assurance crimping according to the size of variable section vehicle trailing arm member to be made;
5) intervolve in advance: put into downwards with convex surface and intervolve mould in advance, the described mould that intervolves in advance has following shape facility: the die cavity that intervolves mould in advance comprises sleeve end and hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, the axis of described die cavity is a continuous curve, and die cavity top seam place is outer gibbosity; On press, just be rolled into type, intervolved part in advance;
6) volume that is shaped: will intervolve the part convex surface in advance and put into downwards to be shaped and intervolve mould, described shaping intervolves mould following shape facility: the die cavity that moulding intervolves mould comprises sleeve end and hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, the axis of described die cavity is a continuous curve, and die cavity top seam place is circular-arc; Moulding on press obtains intervolving part;
7) moulding: shaping piece is put into the standard die cavity finish final molding, described standard die cavity has following shape facility: the standard die cavity comprises sleeve end and hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, and the axis of described standard die cavity is a continuous curve;
8) sew on welding at the indent volume that intervolves formation, and carry out back processing, make variable section vehicle trailing arm member.
Further, in the described step 5), the middle part of the described die cavity die cavity that intervolves mould in advance is for turning round the beam linkage section, the perimeter of section of described die cavity is continuously to sleeve end and changes from small to big from turning round the beam linkage section, be continuously to hub end and change from small to big from turning round the beam linkage section, from the in-plane vertical with hub end, the axis of described die cavity is c-shaped;
In the described step 6), described shaping intervolves the middle part of die cavity die cavity of mould for turning round the beam linkage section, the perimeter of section of described die cavity is continuously to sleeve end and changes from small to big from turning round the beam linkage section, be continuously to hub end and change from small to big from turning round the beam linkage section, from the in-plane vertical with hub end, the axis of described die cavity is c-shaped;
In the described step 8), the middle part of described standard die cavity is for turning round the beam linkage section, the perimeter of section of described standard die cavity is continuously to sleeve end and changes from small to big from turning round the beam linkage section, be continuously to hub end and change from small to big from turning round the beam linkage section, from the in-plane vertical with hub end, the axis of described standard die cavity is c-shaped, from the wheel hub transverse plane, the axis of described standard die cavity is S-shaped, and the center of arc of the center of described hub end and sleeve end has offset distance D.
Certainly, according to the shape of different variable section trailing arm members, we can according to the shaped design of trailing arm member coupling intervolve mould in advance, being shaped intervolves the shape of mould and standard die cavity.
Further again, in the described step 7), the tangent line of friendship place is cut on described axis and plane, hub end place and the angle on this plane is 35 ~ 50.8
o,
o
Further, in the described step 7), described standard die cavity comprises three cross sectional shapes continuous or segmentation changes at least.
In the described step 7), the plain line of the shortest outside face of described standard die cavity and the tangent line of friendship place is cut on plane, described hub end place and the angle on this plane is 42.2 ~ 56
o, preferable range 35 ~ 39
oThe plain line of the longest outside face of described standard die cavity and the tangent line of friendship place is cut on plane, described hub end place and the angle on this plane is 30.6 ~ 41.8
o.
In the described step 7), the angle on the spindle line of described sleeve end circular arc and described hub end plane is 104.8 ~ 125
o.
In the described step 7), with the angle of the spindle line of perpendicular plane, described hub end plane and described sleeve end circular arc be 0 ~ 2
o0
oThe time, the spindle line parallel of plane that described hub end plane is perpendicular and described sleeve end circular arc, certainly, angle also can adopt 0.3 ~ 1.5
o
Described cross sectional shape is one of following: 1. circular; 2. rectangle; 3. trapezoidal; 4. oval; 5. special-shaped.
In the described step 7), the plain line of the shortest outside face of described standard die cavity is the weld line after intervolving.
In the described step 1), the thickness of steel plate is 3 ~ 4.5 millimeters, and the mechanical property of steel plate is: yield strength σ
s=330Mpa, tensile strength sigma
s=450Mpa, stretch ratio δ=33%, hardenability value n=0.23.
The described cross section of turning round the beam linkage section is all rounded.Certainly, also can adopt other shapes.
In the present embodiment, the back processes several cooresponding through holes of twist beam type suspension stay bearing plate mounting hole that are used for and constituted measure-alike or inequality, round or non-circle that distributed on the outer convex surface of the hub end of just processing non-uniform member, being used on the member belly made the benchmark aperture of location, detection usefulness, and the circle or the non-round aperture that are used to install wire clamp and other purposes.
In the present embodiment, described member employing material is 3 ~ 4.5 millimeters a steel plate, yield strength σ
s=330Mpa, tensile strength sigma
s=450Mpa, stretch ratio δ=33%, high-strength thin plate or the mild steel plate of hardenability value n=0.23, preferentially adopting material thickness through this member of actual tests is 4.5 millimeters GB 400 high-strength priming sheets, through setting-out blanking, pre-bending, U type bend, cut edge, intervolve, process forming such as shaping for as the desired basic configuration of figure, manufacturing process is as follows:
With the former material of steel plate according to the prefabricated reasonable size of nesting optimization scheme for ease of the punching press loading and unloading, the blanking of member should make the length direction of member consistent with the raw-material rolling extension direction of steel plate, to guarantee good the intervolving and the performance that extends of material, blank is with reference to Figure 10;
2. blank is done pre-bending and handle on punch die, also claim one-off drawing as Figure 11 and Figure 12;
3. it is curved as Figure 13 the workpiece after the pre-bending to be made the U type on press, also claims redrawing;
4. on punch die, do the crimping side cut with above-mentioned through the curved workpiece of U type, with the conformability of the volume seam behind the assurance crimping;
Will through the workpiece of side cut with convex surface last put into as shown in figure 15 intervolve mould in advance, on press, just be rolled into type;
6. will intervolve part more in advance and intervolve mould with convex surface in last shaping of putting into as shown in figure 18, moulding on press obtains intervolving part;
7. will intervolve part and carry out the small end shaping on the press, holding shaping and have in the standard die cavity and finish final molding greatly successively, described standard die cavity as shown in figure 21.
Sewing on the employing arc welding at the even volume of the indent that intervolves formation forms.The weld seam feature is the shortest plain line along axis direction upper member surface.
The vehicle trailing arm member that present embodiment makes, with plane, hub end place is the front view direction, with the vertical plane surface on plane, described hub end place be side view orientation, described variable section intervolves welding vehicle trailing arm member axis feature: S-type on front view, and the center of arc of hub end center and sleeve end has an offset distance D on this view, on lateral plan, be the C type, with reference to Fig. 1 ~ Fig. 3.
Difformity according to hub end, the variable section feature of trailing arm member on axis is to be circle, rectangle, trapezoidal or special-shaped continuous or that segmentation changes along each cross section of axis, at least comprise that wherein 3 or above rule or the girth of fitfull hollow section change, perimeter of section is continuously to sleeve end and changes from small to big from turning round the beam linkage section, is continuously to hub end and changes from small to big from turning round the beam linkage section.
With reference to Fig. 3, the geometric properties of trailing arm member is: the tangent line of friendship place is cut on described axis and plane, hub end place and the angle on this plane is 35 ~ 50.8
oThe spindle line of the circular arc R of sleeve end and hub end place Plane intersects are 104.8 ~ 125
oAngle.
With reference to Fig. 3, the middle part of the vehicle trailing arm member of making according to this method for making is for turning round the beam linkage section, and promptly the B-B section plane is equal to the perimeter of section between the C-C section plane, and the cross section is all rounded; The trailing arm member begins to fade to special-shaped as shown in Figure 4 rectangle to the sleeve end direction from the B-B section plane vertical with the spindle line, and wherein the size along the paper plane direction is roughly 86 millimeters, and the approximate size on the direction vertical with paper plane is 46 millimeters; The trailing arm member begins to fade to as Fig. 7, abnormity shown in Figure 8 to the hub end direction from the C-C section plane vertical with the spindle line, and finally fading to the hub end cross section, described hub end cross section comprises that four straight flanges of smooth bonded assembly and four radiuses are roughly the circular arc in 15 millimeters to 28 millimeters scopes; The tangent line on the trailing arm member on plain line of the shortest outside face and the hub end end face section line and the angle on hub end plane are 45-49
O, the tangent line on the member on plain line of the longest outside face and the hub end end face section line and the angle on hub end plane are 35-39
O, maximum oad is roughly between 100 to 150 millimeters on the end face.The length dimension of the maximum of member is roughly at 450 millimeters, and greatest width dimension is roughly at 250 millimeters, and the maximum ga(u)ge size is roughly at 150 millimeters.
Present embodiment structurally is with the difference that existing trailing arm is made: (1) has only a weld seam and weld seam to be on the shortest plain line of indent of members shaft line, and weldquality almost can be ignored to the influence of member; (2) the present invention adopts repeatedly punching press, intervolves to make special-shaped complicated variable section trailing arm member, has the reduction cost of manufacture, helps the advantage of stable mass production.
The described content of this specification sheets embodiment only is enumerating the way of realization of the present invention's design; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (11)
1. the method for making of a variable section vehicle trailing arm member, it is characterized in that: described method for making may further comprise the steps:
1) setting-out blanking: steel plate that select to set thickness carries out blanking, and the rolling extension direction of the blank behind the blanking is consistent with the length direction of variable section vehicle trailing arm member to be made, and described blank has c-shaped axis;
2) pre-bending: blank is done pre-bending handle on punch die;
3) the U type is curved: the blank after the pre-bending is made the U type on press curved;
4) cut edge: on punch die, make crimping and cut edge, cut edge, the conformability of the volume seam behind the assurance crimping according to the size of variable section vehicle trailing arm member to be made;
5) intervolve in advance: put into downwards with convex surface and intervolve mould in advance, the described mould that intervolves in advance has following shape facility: the die cavity that intervolves mould in advance comprises sleeve end and hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, the axis of described die cavity is a continuous curve, and die cavity top seam place is outer gibbosity; On press, just be rolled into type, intervolved part in advance;
6) volume that is shaped: will intervolve the part convex surface in advance and put into downwards to be shaped and intervolve mould, described shaping intervolves mould following shape facility: the die cavity that intervolves mould that is shaped comprises sleeve end and hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, the axis of described die cavity is a continuous curve, and die cavity top seam place is circular-arc; Moulding on press obtains intervolving part;
7) shaping: will intervolve part and on press, carry out sleeve end shaping and hub end shaping successively;
8) moulding: shaping piece is put into the standard die cavity finish final molding, described standard die cavity has following shape facility: the standard die cavity comprises sleeve end and hub end, the perimeter of section of described sleeve end is less than the perimeter of section of described hub end, and the axis of described standard die cavity is a continuous curve;
8) sew on welding at the indent volume that intervolves formation, and carry out back processing, make variable section vehicle trailing arm member.
2. the method for making of variable section vehicle trailing arm member as claimed in claim 1, it is characterized in that: in the described step 5), the middle part of the described die cavity die cavity that intervolves mould in advance is for turning round the beam linkage section, the perimeter of section of described die cavity is continuously to sleeve end and changes from small to big from turning round the beam linkage section, be continuously to hub end and change from small to big from turning round the beam linkage section, from the in-plane vertical with hub end, the axis of described die cavity is c-shaped;
In the described step 6), described shaping intervolves the middle part of die cavity die cavity of mould for turning round the beam linkage section, the perimeter of section of described die cavity is continuously to sleeve end and changes from small to big from turning round the beam linkage section, be continuously to hub end and change from small to big from turning round the beam linkage section, from the in-plane vertical with hub end, the axis of described die cavity is c-shaped;
In the described step 8), the middle part of described standard die cavity is for turning round the beam linkage section, the perimeter of section of described standard die cavity is continuously to sleeve end and changes from small to big from turning round the beam linkage section, be continuously to hub end and change from small to big from turning round the beam linkage section, from the in-plane vertical with hub end, the axis of described standard die cavity is c-shaped, from the wheel hub transverse plane, the axis of described standard die cavity is S-shaped, and the center of arc of the center of described hub end and sleeve end has offset distance D.
3. the method for making of variable section vehicle trailing arm member as claimed in claim 1 or 2 is characterized in that: in the described step 7), the tangent line of friendship place is cut on described axis and plane, hub end place and the angle on this plane is 35 ~ 50.8
o
4. the method for making of variable section vehicle trailing arm member as claimed in claim 1 or 2 is characterized in that: in the described step 7), described standard die cavity comprises three cross sectional shapes continuous or segmentation changes at least.
5. the method for making of variable section vehicle trailing arm member as claimed in claim 1 or 2, it is characterized in that: in the described step 7), the shortest outside face of described standard die cavity plain line and described hub end and the tangent line of friendship place is cut on the plane, place and the angle on this plane is 42.2 ~ 56
oThe plain line of the longest outside face of described standard die cavity and the tangent line of friendship place is cut on plane, described hub end place and the angle on this plane is 30.6 ~ 41.8
o
6. the method for making of variable section vehicle trailing arm member as claimed in claim 3 is characterized in that: in the described step 7), the angle on the spindle line of described sleeve end circular arc and described hub end plane is 104.8 ~ 125
o
7. the method for making of variable section vehicle trailing arm member as claimed in claim 6 is characterized in that: in the described step 7), having the inclination angle with the angle of the spindle line of perpendicular plane, described hub end plane and described sleeve end circular arc is 0 ~ 2
o
8. the method for making of variable section vehicle trailing arm member as claimed in claim 4 is characterized in that: described cross sectional shape is one of following: 1. circular; 2. rectangle; 3. trapezoidal; 4. oval; 5. special-shaped.
9. the method for making of variable section vehicle trailing arm member as claimed in claim 1 or 2 is characterized in that: in the described step 7), the plain line of the shortest outside face of described standard die cavity is the weld line after intervolving.
10. the method for making of variable section vehicle trailing arm member as claimed in claim 1 or 2 is characterized in that: in the described step 1), the thickness of steel plate is 3 ~ 4.5 millimeters, and the mechanical property of steel plate is: yield strength σ
s=330Mpa, tensile strength sigma
s=450Mpa, stretch ratio δ=33%, hardenability value n=0.23.
11. the method for making of variable section vehicle trailing arm member as claimed in claim 1 or 2 is characterized in that: the described cross section of turning round the beam linkage section is all rounded.
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| CN102764949A (en) * | 2012-07-10 | 2012-11-07 | 十堰市先驰汽车车架有限公司 | Process for multi-inflection point direct-shearing, shape modifying and blanking of vehicle frame lengthwise beam forming sheet |
| CN104785619A (en) * | 2015-03-31 | 2015-07-22 | 衡阳风顺车桥有限公司 | Frame variable cross-section bent tube beam machining process |
| CN105537861A (en) * | 2014-11-03 | 2016-05-04 | 柳州市高成机械制造有限公司 | Processing method of trailing arm |
| CN116352441A (en) * | 2023-03-15 | 2023-06-30 | 舆软科技(上海)有限责任公司 | Method for stamping and forming special-shaped, closed and variable-section beam parts by using plate materials |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102764949A (en) * | 2012-07-10 | 2012-11-07 | 十堰市先驰汽车车架有限公司 | Process for multi-inflection point direct-shearing, shape modifying and blanking of vehicle frame lengthwise beam forming sheet |
| CN105537861A (en) * | 2014-11-03 | 2016-05-04 | 柳州市高成机械制造有限公司 | Processing method of trailing arm |
| CN104785619A (en) * | 2015-03-31 | 2015-07-22 | 衡阳风顺车桥有限公司 | Frame variable cross-section bent tube beam machining process |
| CN116352441A (en) * | 2023-03-15 | 2023-06-30 | 舆软科技(上海)有限责任公司 | Method for stamping and forming special-shaped, closed and variable-section beam parts by using plate materials |
| CN116352441B (en) * | 2023-03-15 | 2023-12-15 | 舆软科技(上海)有限责任公司 | Method for stamping and forming special-shaped, closed and variable-section beam parts by using plate materials |
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| CN102092259B (en) | 2013-02-13 |
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