CN110370880B - Manufacturing method of high-strength torsion beam formed by pipe punching - Google Patents
Manufacturing method of high-strength torsion beam formed by pipe punching Download PDFInfo
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- CN110370880B CN110370880B CN201910700130.9A CN201910700130A CN110370880B CN 110370880 B CN110370880 B CN 110370880B CN 201910700130 A CN201910700130 A CN 201910700130A CN 110370880 B CN110370880 B CN 110370880B
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- torsion beam
- manufacturing
- pipe
- section
- elastic sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/051—Trailing arm twist beam axles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/20—Constructional features of semi-rigid axles, e.g. twist beam type axles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/81—Shaping
- B60G2206/8102—Shaping by stamping
Abstract
The invention relates to the field of automobile accessories, and particularly discloses a manufacturing method of a high-strength torsion beam formed by pipe stamping, which comprises a main body, wherein a closed cavity is arranged in the main body, the main body is made of a pipe through stamping, and the pipe is filled with paraffin; the main part includes left end head, left changeover portion, interlude, right changeover portion and right-hand member head in proper order along the axial, and the external diameter of interlude is less than the external diameter of left end head and right-hand member head, and the interlude is the V-arrangement along vertical cross-section, and left changeover portion and right changeover portion are the spill along vertical cross-section, and left end head and right-hand member head are described for the mouth along vertical cross-section. The torsion beam in the scheme can support the side wall of the pipeline during pipeline stamping.
Description
Technical Field
The invention relates to the field of automobile accessories, in particular to a manufacturing method of a high-strength torsion beam formed by pipe stamping.
Background
The torsion beam type suspension is one type of automobile rear suspension, wheels of an automobile are arranged at two ends of a torsion beam, and the torsion beam can balance up-and-down jumping of left and right wheels so as to reduce shaking of the automobile and keep the stability of the automobile. The torsion beam has simple structure and large bearing capacity, and is generally used for load-carrying trucks, common passenger cars and some special vehicles.
Current torsion beam can be through pipeline stamping forming, and the pipeline is inside to be the cavity during the punching press, does not have bearing structure, and the cavity at torsion beam middle part is less, and the deformation volume that needs to take place in the middle part of the pipeline is great, and the speed of punching press is very fast, makes the pipeline at middle part crack easily, leads to torsion beam's intensity to reduce.
Disclosure of Invention
The invention aims to provide a high-strength torsion beam for supporting the side wall of a pipeline during pipeline punching, so as to avoid cracks on the side wall of the pipeline and avoid the strength reduction of the torsion beam.
In order to achieve the purpose, the technical scheme of the invention is as follows: the manufacturing approach of the high strength torsion beam that the tube punch forming, including the body, there is a closed cavity pocket in the body, the body adopts the tubular material to be made by punching, and the tubular material is filled with the paraffin; the main part includes left end head, left changeover portion, interlude, right changeover portion and right-hand member head in proper order along the axial, and the external diameter of interlude is less than the external diameter of left end head and right-hand member head, and the interlude is the V-arrangement along vertical cross-section, and left changeover portion and right changeover portion are the spill along vertical cross-section, and left end head and right-hand member head are described for the mouth along vertical cross-section.
The beneficial effect of this scheme does:
1. after paraffin enters the pipe and is solidified, when the pipe is stamped, the paraffin plays a supporting role on the side wall of the pipe, so that the pipe is prevented from cracking. And paraffin has certain ductility, and after deformation took place for tubular product among the stamping process, paraffin received the extrusion of tubular product and moved to the cavity department of the main part that forms gradually to play the supporting role to the lateral wall of cavity department, avoid the excessive deformation of cavity lateral wall.
2. In the forming process, the paraffin moves relative to the inner wall of the pipe, and the oxide layer on the inner wall of the pipe can be removed, so that the inner wall of the formed torsion beam is smoother, the risk of abnormal sound of the torsion beam is reduced, and the quality of the torsion beam is improved.
Further, the paraffin in the pipe is in a honeycomb shape.
The beneficial effect of this scheme does: the paraffin has a gap, and when the pipe deforms and extrudes the paraffin, the paraffin has enough space to move, so that excessive support is not provided for the side wall of the pipe.
Furthermore, a stop lever coaxial with the pipe is inserted into the pipe, and the end part of the stop lever is positioned outside the pipe.
The beneficial effect of this scheme does: the stop lever causes the stop to the flow of paraffin, and after the paraffin solidifies, the stop lever is taken out to form a gap in the paraffin, so that the paraffin is more convenient and faster.
Furthermore, the pin includes well core rod, the annular elastic sleeve of cover on well core rod and is located a plurality of bracing pieces between elastic sleeve and the core rod, well core rod one of them end is for holding the end, and holds the end and be located the tubular product outside.
The beneficial effect of this scheme does: elastic sleeve and paraffin contact, when needing to take out the pin, pulling well core rod can outwards drive the elastic sleeve, and the elastic sleeve can take place deformation when receiving the pulling force effect of bracing piece to quick and paraffin separation.
Furthermore, the two ends of the supporting rod are respectively hinged with the central rod and the elastic sleeve, and one end of the supporting rod, which is close to the central rod, is positioned on one side of the holding end of the supporting rod.
The beneficial effect of this scheme does: when the center rod is pulled outwards, the supporting rod rotates towards one side close to the center rod, the elastic sleeve is driven to contract towards one side close to the center rod, the space formed by the elastic sleeve is reduced, the elastic sleeve is automatically separated from paraffin, the friction force of the paraffin is received when the elastic sleeve slides out is reduced, and the sliding out is more convenient.
Further, the end of the elastic sleeve away from the holding end is closed.
The beneficial effect of this scheme does: in the unable one end of keeping away from the portion of gripping from the elastic sleeve of paraffin in this scheme gets into the elastic sleeve, when the pin stretches into tubular product from tubular product one end, can follow in the other end of tubular product adds tubular product with the paraffin that melts, improve machining efficiency.
Further, cold air is blown into the elastic sleeve.
The beneficial effect of this scheme does: the cold air can reduce the temperature around the elastic sleeve, promote the paraffin to solidify and further improve the processing efficiency.
Furthermore, a reinforcing rib is fixed in the cavity, and an included angle is formed between the reinforcing rib and the axial direction of the main body.
The beneficial effect of this scheme does: the reinforcing ribs can support the side wall of the cavity after being positioned in the cavity, and the torsional rigidity of the torsion beam is improved, so that the torsion beam is prevented from deforming in the using process, and the service life of the torsion beam is prolonged.
Furthermore, the number of the reinforcing ribs is at least two, and the reinforcing ribs are uniformly distributed in the left transition section and the right transition section.
The beneficial effect of this scheme does: the quantity of strengthening muscle increases, and is better to the support effect of cavity lateral wall, further avoids torsion beam to take place deformation. When torsion beam received the effect of twisting reverse, left changeover portion and right changeover portion took place deformation easily, and the strengthening rib is located left changeover portion and right changeover portion in can be better play the supporting role to the lateral wall of left changeover portion and right changeover portion to improve the intensity of left changeover portion and right changeover portion.
Further, the strengthening rib tip is equipped with the holding tank that can hold the soldering paste.
The beneficial effect of this scheme does: in order to improve the strength of the torsion beam, the torsion beam is required to be subjected to heat treatment after being formed, and when the torsion beam is subjected to heat treatment in the scheme, the soldering paste is melted, and the reinforcing ribs are fixed on the main body. Because the space of cavity is less, it is great relatively to carry out the welded degree of difficulty to the strengthening rib in stretching into the cavity with welding set, need not in this scheme alone to weld the strengthening rib, reduces the processing step, effectively reduces the processing degree of difficulty, improves torsion beam's production efficiency.
Drawings
FIG. 1 is a schematic perspective view of example 1 of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 5 is an enlarged view taken at D in FIG. 3;
FIG. 6 is a vertical cross-sectional view of the stop bar after being placed in the tubing;
FIG. 7 is a left side view of FIG. 6;
fig. 8 is a vertical sectional view of the stopper rod of example 2 of the present invention after being put into the pipe.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the middle section 1, the left transition section 2, the groove 21, the left end head section 3, the cavity 4, the reinforcing rib 5, the soldering paste 51, the pipe 6, the central rod 7, the elastic sleeve 71 and the support rod 72.
Example 1
Fig. 6 shows a method for manufacturing a high-strength torsion beam formed by pipe press forming, in which the torsion beam is formed by pipe 6 press forming, four stop levers coaxial with the pipe 6 are inserted into an inner cavity of the pipe 6 for manufacturing the high-strength torsion beam, each stop lever includes a central rod 7, an annular elastic sleeve 71 sleeved on the central rod 7, and a plurality of support rods 72 located between the elastic sleeve 71 and the central rod 7, the central rod 7 and the elastic sleeve 71 in this embodiment are both longer than the pipe 6, and the left end of the central rod 7 is a holding end, and the holding end is located outside the pipe 6 after the central rod 7 is located in the pipe 6. The elastic sleeve 71 is made of nitrile rubber, the surface of the elastic sleeve 71 is smooth, and two ends of the supporting rod 72 are respectively hinged on the central rod 7 and the elastic sleeve 71.
When the central rod 7 is manually pushed rightwards relative to the elastic sleeve 71, the right end of the support rod 72 rotates to the side far away from the central rod 7 to expand the elastic sleeve 71, the central rod 7 enters the tube 6 from the left end of the tube 6, molten paraffin is filled between the elastic sleeve 71 and the side wall of the tube 6, and the paraffin is blocked by the elastic sleeve 71 to surround the periphery of the elastic sleeve 71. The elastic sleeve 71 is filled with cold air, and the cold air reduces the temperature around the elastic sleeve 71, so that the solidification speed of paraffin in the pipe 6 is accelerated.
After paraffin solidifies, when artifical with well core rod 7 when pulling left, bracing piece 72 right-hand member was rotated to being close to well core rod 7 one side this moment, and elastic sleeve 71 is pulled to being close to well core rod 7 one side, and the space that elastic sleeve 71 formed reduces, because elastic sleeve 71 surface is smooth, so paraffin solidifies the back can not take place the adhesion with elastic sleeve 71, thereby elastic sleeve 71 can separate with paraffin, the convenient roll-off. As shown in fig. 7, after the central rod 7 and the elastic sleeve 71 slide out of the tube 6, four gaps are distributed in the paraffin, and at the time, the paraffin is in a honeycomb shape, and when the tube 6 is punched, the paraffin has enough space to deform.
The method for installing the reinforcing rib on the high-strength torsion beam manufactured by stamping the pipe comprises the following steps:
after the tube 6 is punched to form the main body, when the main body is heated, the paraffin in the cavity 4 is melted again and flows out. As shown in fig. 3 and 5, in the present embodiment, when the reinforcing rib 5 is installed, taking the reinforcing rib 5 located in the left transition section 2 as an example, after the torsion beam is formed, the left end of the left end head section 3 and the right end of the right end head section are both open, and the reinforcing rib 5 is manually fed into the cavity 4 from the opening of the left end head section 3. Because the area of the cavity 4 is smaller and smaller as the middle section 1 is closer, the cavity 4 at the left end of the left transition section 2 is larger than the cavity 4 at the right end of the left transition section 2, the cross reinforcing rib 5 is gradually clamped in the cavity 4 in the process of being pushed towards the middle section 1, and the reinforcing rib 5 cannot fall out of the cavity 4 at the moment. After the reinforcing rib 5 cannot be pushed rightwards, the steel plate is welded at the left end of the left transition section 2, so that the opening can be closed, and the sealing of the cavity 4 is completed. When the torsion beam is subjected to subsequent heat treatment, the solder paste 51 melts to fix the reinforcing ribs 5 to the left and right transition sections 2 and 2.
The high-strength torsion beam processed by the method comprises a main body, as shown in fig. 1 and 2, a closed cavity 4 is arranged in the main body, the body sequentially comprises a left end section 3, a left transition section 2, a middle section 1, a right transition section and a right end section from left to right, the outer diameter of the middle section 1 is smaller than the outer diameters of the left end section 3 and the right end section, wherein the left end section 3 and the right end section are symmetrical along the central line of the middle section 1, the left transition section 2 and the right transition section are symmetrical along the central line of the middle section 1, and the surfaces of the left end section 3, the left transition section 2, the middle section 1, the right transition section and the right end section are all arc surfaces.
The section of the middle section 1 along the vertical direction is V-shaped, as shown in figure 4, the section of the left end head section 3 and the section of the right end head section along the vertical direction are mouth-shaped. As shown in fig. 3, the vertical cross-section of the left transition section 2 and the vertical cross-section of the right transition section are concave, at least two reinforcing ribs 5 are arranged in the cavity 4, and the reinforcing ribs 5 are arranged in the left transition section 2 and the right transition section, specifically, the number of the reinforcing ribs 5 in the embodiment is two, and the two reinforcing ribs 5 are respectively welded in the left transition section 2 and the right transition section. The reinforcing ribs 5 are perpendicular to the axial direction of the main body, namely the reinforcing ribs 5 in the embodiment are vertically arranged, and the reinforcing ribs 5 are in a cross shape.
The tip of strengthening rib 5 is equipped with the holding tank, as shown in fig. 5, stores up soldering paste 51 in the holding tank, and the inner wall of changeover portion 2 and right changeover portion all is equipped with three recess 21 relative with the other three tip of strengthening rib 5 respectively.
Example 2
As shown in fig. 8, in addition to embodiment 1, the right end of the elastic sleeve 71 in this embodiment is closed to prevent paraffin from entering the elastic sleeve 71 from the right end of the elastic sleeve 71, so that molten paraffin is introduced into the pipe 6 from the right end of the pipe 6 while the elastic sleeve 71 is slid in from the left end of the pipe 6, thereby improving the working efficiency, and in the specific implementation, the pipe 6 may be filled with molding sand, steel shots with a diameter of 1mm or less, or a combination of molding sand, steel shots and paraffin, except that other operation steps in this embodiment are the same as those in embodiment 1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various changes and modifications without departing from the concept of the present invention, and these should be construed as the scope of protection of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.
Claims (8)
1. The manufacturing method of the high-strength torsion beam formed by the pipe punching comprises a main body, wherein a closed cavity is arranged in the main body, and the manufacturing method is characterized in that: the main body is made of a pipe material through stamping, and paraffin is filled in the pipe material; the main body sequentially comprises a left end head section, a left transition section, a middle section, a right transition section and a right end head section along the axial direction, the outer diameter of the middle section is smaller than the outer diameters of the left end head section and the right end head section, the vertical section of the middle section is V-shaped, the vertical sections of the left transition section and the right transition section are concave, and the vertical sections of the left end head section and the right end head section are mouth-shaped; the inner cavity of the pipe for manufacturing the high-strength torsion beam is inserted with a stop lever which is coaxial with the pipe, the stop lever comprises a central rod, an annular elastic sleeve sleeved on the central rod and a plurality of support rods positioned between the elastic sleeve and the central rod, one end of the central rod is a holding end, and the holding end is positioned outside the pipe.
2. The method of manufacturing a high-strength torsion beam formed by stamping and shaping a tube according to claim 1, wherein: the paraffin in the pipe is in a honeycomb shape.
3. The manufacturing method of the high-strength torsion beam formed by punching and shaping a tube according to claim 2, wherein: the bracing piece both ends are articulated with well core rod and elastic sleeve respectively, and the bracing piece is close to well core rod one end and is located the bracing piece towards holding one side of holding the end.
4. The manufacturing method of the high-strength torsion beam formed by punching and shaping a tube according to claim 2, wherein: the end part of the elastic sleeve far away from the holding end is closed.
5. The manufacturing method of the high-strength torsion beam formed by punching and shaping a tube according to claim 4, wherein: cold air is blown into the elastic sleeve.
6. The method of manufacturing a high-strength torsion beam formed by stamping and shaping a tube according to claim 1, wherein: the cavity is internally fixed with a reinforcing rib, and an included angle is formed between the reinforcing rib and the axial direction of the main body.
7. The method of manufacturing a high-strength torsion beam formed by press molding from a tube according to claim 6, wherein: the quantity of strengthening rib is at least two, and equipartition has the strengthening rib in left changeover portion and the right changeover portion.
8. The method of manufacturing a high-strength torsion beam stamped and formed from a tube according to claim 7, wherein: the strengthening rib tip is equipped with the holding tank that can hold the soldering paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910700130.9A CN110370880B (en) | 2019-07-31 | 2019-07-31 | Manufacturing method of high-strength torsion beam formed by pipe punching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910700130.9A CN110370880B (en) | 2019-07-31 | 2019-07-31 | Manufacturing method of high-strength torsion beam formed by pipe punching |
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| CN110370880A CN110370880A (en) | 2019-10-25 |
| CN110370880B true CN110370880B (en) | 2020-08-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1920467A (en) * | 2005-08-26 | 2007-02-28 | 富准精密工业(深圳)有限公司 | Method for manufacturing sintered heat pipe |
| CN202868283U (en) * | 2012-10-11 | 2013-04-10 | 重庆民康实业有限公司 | Novel bent pipe fitting for flatting |
| CN103894514A (en) * | 2014-03-27 | 2014-07-02 | 宝山钢铁股份有限公司 | Method for stamping and forming torsion beams of pipe fittings |
| FR3021563A1 (en) * | 2014-06-03 | 2015-12-04 | Peugeot Citroen Automobiles Sa | PROCESS FOR MANUFACTURING PARTS BY BONDING AND / OR HYDROFORMING AFTER PLACING BAND (S) ANTIFRICTION BETWEEN WALLS |
| CN206171093U (en) * | 2016-10-28 | 2017-05-17 | 天人汽车底盘（芜湖）股份有限公司 | Automobile torsion beam |
| CN106828009A (en) * | 2017-03-03 | 2017-06-13 | 袁璐 | Rear suspension torsion girder construction |
| CN207718963U (en) * | 2017-11-08 | 2018-08-10 | 保定迪泰电力设备制造有限公司 | A kind of no dust epoxy glass stick |
| CN108725125A (en) * | 2017-04-17 | 2018-11-02 | 本田技研工业株式会社 | The manufacturing method of torsion beam |
| CN208794026U (en) * | 2018-09-04 | 2019-04-26 | 台州远大焊管有限公司 | A kind of high intensity round tube |
| CN209041968U (en) * | 2018-09-30 | 2019-06-28 | 江苏升创管业有限公司 | The reinforcement handrail tube of rail traffic vehicles |
-
2019
- 2019-07-31 CN CN201910700130.9A patent/CN110370880B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1920467A (en) * | 2005-08-26 | 2007-02-28 | 富准精密工业(深圳)有限公司 | Method for manufacturing sintered heat pipe |
| CN202868283U (en) * | 2012-10-11 | 2013-04-10 | 重庆民康实业有限公司 | Novel bent pipe fitting for flatting |
| CN103894514A (en) * | 2014-03-27 | 2014-07-02 | 宝山钢铁股份有限公司 | Method for stamping and forming torsion beams of pipe fittings |
| FR3021563A1 (en) * | 2014-06-03 | 2015-12-04 | Peugeot Citroen Automobiles Sa | PROCESS FOR MANUFACTURING PARTS BY BONDING AND / OR HYDROFORMING AFTER PLACING BAND (S) ANTIFRICTION BETWEEN WALLS |
| CN206171093U (en) * | 2016-10-28 | 2017-05-17 | 天人汽车底盘（芜湖）股份有限公司 | Automobile torsion beam |
| CN106828009A (en) * | 2017-03-03 | 2017-06-13 | 袁璐 | Rear suspension torsion girder construction |
| CN108725125A (en) * | 2017-04-17 | 2018-11-02 | 本田技研工业株式会社 | The manufacturing method of torsion beam |
| CN207718963U (en) * | 2017-11-08 | 2018-08-10 | 保定迪泰电力设备制造有限公司 | A kind of no dust epoxy glass stick |
| CN208794026U (en) * | 2018-09-04 | 2019-04-26 | 台州远大焊管有限公司 | A kind of high intensity round tube |
| CN209041968U (en) * | 2018-09-30 | 2019-06-28 | 江苏升创管业有限公司 | The reinforcement handrail tube of rail traffic vehicles |
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| Publication number | Publication date |
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| CN110370880A (en) | 2019-10-25 |
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Effective date of registration: 20210308 Address after: 400000 886 Haier Road Jiangbei District Chongqing Patentee after: Chongqing youciba Auto Parts Co.,Ltd. Address before: 241000 workshop 2, No.81 Feixiang Road, Jiujiang Economic Development Zone, Wuhu City, Anhui Province Patentee before: TIANREN AUTOMOBILE CHASSIS (WUHU) Co.,Ltd. |
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Effective date of registration: 20211118 Address after: 241000 workshop 2, No.81 Feixiang Road, Jiujiang Economic Development Zone, Wuhu City, Anhui Province Patentee after: TIANREN AUTOMOBILE CHASSIS (WUHU) CO.,LTD. Address before: 400000 886 Haier Road Jiangbei District Chongqing Patentee before: Chongqing youciba Auto Parts Co.,Ltd. |