CN107244267B - Cold-bending seat fixing profile of passenger car and manufacturing process thereof - Google Patents
Cold-bending seat fixing profile of passenger car and manufacturing process thereof Download PDFInfo
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- CN107244267B CN107244267B CN201710358469.6A CN201710358469A CN107244267B CN 107244267 B CN107244267 B CN 107244267B CN 201710358469 A CN201710358469 A CN 201710358469A CN 107244267 B CN107244267 B CN 107244267B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/005—Arrangement or mounting of seats in vehicles, e.g. dismountable auxiliary seats
- B60N2/015—Attaching seats directly to vehicle chassis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a cold bending seat of a passenger carThe section bar is fixed to the chair, and the arbitrary longitudinal section of section bar main part is "6" font, and this section bar main part includes rectangle side pipe and pterygoid lamina, and rectangle side pipe and pterygoid lamina are by a belted steel integrated into one piece, and rectangle side pipe upper end edge has an arc and combines the section, and the pterygoid lamina by arc combines the section to extend bending type one-tenth to the side. The manufacturing process of the cold-bending seat fixing profile comprises the following steps:
selecting strip steel;
precisely flattening the strip steel by 21 rollers;
a rough rolling stage of the fixed section of the cold-bending seat;
in the laser welding stage, 3 raw materials of the wing plate part are combined simultaneously;
and finishing the cold-bending seat fixing profile. The process can ensure the processability of the complex section of the product and ensure the structural strength and the installation function of the product; the rolled product can reach the specified size; the mechanical property of the welding seam at the joint of the arc section and the wing plate 3 is ensured; reasonable process, replacement of the original structure, realization of integration of light weight and functionalization and the like.
Description
Technical Field
The invention relates to a special-shaped structural member for installing a passenger car seat, in particular to a cold-bending seat fixing profile of a passenger car and a manufacturing process thereof.
Background
The conventional passenger car is mainly installed by manual operation and is insensitive to operation man-hour and car body weight. The low-strength steel square tube and the groove-shaped section are convenient to purchase and low in price due to the fact that the production technology threshold is low, and cost control is facilitated.
In recent years, with the continuous promotion of national energy saving and emission reduction policies, the vehicle light weight regulation is more and more severe, the traditional low-strength steel section is no longer suitable for the light weight requirement and the cost control requirement of a passenger car, and therefore, the adoption of high-strength steel and even ultrahigh-strength steel as the raw materials of the products is promoted, and the effect of high strength and thinning is achieved.
In addition, with the development of national economy, the labor cost of China is also increased year by year, and the traditional labor-intensive industry is replaced by advanced automatic integrated production. However, domestic passenger cars are competing with international and international co-industry for rail jointing at full speed in recent years, and in order to achieve the purposes of reducing the weight of the car body, reducing the labor cost and improving the quality and stability of products, the car body of the passenger car has increasingly high call for precision profiled bars which integrate structural parts and functional parts.
Disclosure of Invention
The invention aims to solve the existing problems and provides a fixed section bar of a cold-bending seat of a passenger car and a manufacturing process thereof.
The invention adopts the following technical scheme:
the utility model provides a cold-formed seat fixed section bar of passenger train, includes a section bar main part, the arbitrary longitudinal section of section bar main part is "6" font, and this section bar main part is including the rectangle side pipe and a pterygoid lamina that is used for fixed passenger train cold-formed seat of supporting role together, rectangle side pipe and pterygoid lamina are by a strip steel integrated into one piece, wherein, rectangle side pipe upper end edge has an arc bonding section, the pterygoid lamina by arc bonding section lateral extension bending type becomes.
Furthermore, the upper end face of the wing plate is flush with the upper end face of the rectangular square pipe.
Furthermore, the longitudinal section of the wing plate is of an L-shaped structure which is transversely placed.
Furthermore, the wing plate is of a double-layer L-shaped structure formed by bending the strip steel back and forth.
The invention relates to a manufacturing process of a cold-bending seat fixing profile, which comprises the following steps:
(1) And selecting strip steel: selecting strip steel with the adaptive thickness and width according to the thickness of the cold-bending seat fixing section and the unfolded length of the cross section;
(2) And precision leveling of a strip steel 21 roller: leveling the strip steel through an online 21-roller precision leveling process;
(3) And a rough rolling stage of the fixed section bar of the cold bending seat: the rough rolling stage mainly adopts upper and lower paired deformation rollers, and is assisted by a vertical roller and an oblique inserting roller in part of passes, and the strip steel is rolled into a rough rolling formed cold bending seat fixed section; the rough rolling stage is from 1 st pass to 25 th pass, wherein the forming of the main structure of the cold-bending seat fixing profile is completed in the 1 st pass to the 21 st pass, and the gaps of the rollers are shrunk and the raw materials of the wing plate parts are extruded in the 22 nd pass to the 25 th pass;
(4) And a laser welding stage: combining 3 raw materials of the wing plate part of the cold-bending seat fixing profile simultaneously by an online CO2 laser welding process and matching with two groups of extrusion rollers of the 26 th pass;
(5) And finishing the cold-bending seat fixing section bar: in the process of roller deformation, the cold-bending seat fixing section after rough rolling forming and laser welding is finished from the 27 th pass to the 30 th pass so as to meet various precision requirements.
In the rolling deformation process, the arc section is gradually formed in each stage, and the gap between two layers of raw materials of the wing plate is gradually reduced and finally equal to the product value.
The core of the fixed profile gradually moves upwards in the 1 st to 8 th passes of the roller; the core remains unchanged from pass 9 to pass 30.
In the step (5), a four-roller separation type straightening head is adopted from the 27 th pass to the 29 th pass so as to ensure the flatness and the straightness of the product; and adjusting the torsion degree of the cold-bending seat fixing section by adopting a Turkish head straightening machine in the 30 th pass.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
1. the cold-bending seat fixing profile is integrally formed by strip steel, replaces an original multi-piece welding structure, can adopt precise rolling and laser welding processes, overcomes the difficulty of welding ultrahigh-strength steel on the rolled profile, realizes the thinning effect of reducing the thickness of a product from 4.0mm to 2.0mm, realizes the integration of light weight and functionalization, and has the characteristics of light weight and high strength.
2. According to the manufacturing process of the fixed section, before rolling deformation, an online 21-roller precision leveling procedure is adopted, so that residual stress in the strip steel is eliminated, the defect caused by the complexity of the section of the product is avoided, and the size precision of the product is ensured;
3. according to the manufacturing process of the fixed profile, in the rolling deformation process, the profile center gradually moves upwards from the 1 st pass to the 8 th pass, so that the bottom arc is always kept on a horizontal line in the forming process, and the dimensional accuracy and the mechanical property of the bottom arc are ensured; in the 9 th to 30 th passes, the core is kept unchanged, the top of the product is always kept on a horizontal line in the forming process, and the dimensional accuracy and the mechanical property of the product are ensured;
4. according to the manufacturing process of the fixed profile, an online laser welding process is adopted between the rough rolling stage and the finish rolling stage, 3 raw materials of the wing plate part are combined simultaneously, and the structural integrity and the stability of a product are guaranteed.
Drawings
FIG. 1 is a schematic view of the installation of the cold bend seat attachment profile of the present invention;
FIG. 2 is a cross-sectional view of a cold-formed seat attachment profile of the present invention;
FIG. 3 is a drawing of the process of the cold-bending seat attachment section of the present invention, which is performed in the 1 st pass of rolling deformation;
FIG. 4 is a drawing of the 2 nd pass rolling deformation process performed by the cold-formed seat fastening profile of the present invention;
FIG. 5 is a drawing of the 3 rd pass rolling deformation process performed by the cold-formed seat fastening profile of the present invention;
FIG. 6 is a drawing of the 4 th pass rolling deformation process performed by the cold-formed seat fastening profile of the present invention;
FIG. 7 is a drawing of the 5 th pass rolling deformation process performed by the cold-formed seat fastening profile of the present invention;
FIG. 8 is a6 th rolling deformation process diagram of the cold-formed seat fixing profile of the present invention;
FIG. 9 is a drawing of the 7 th rolling deformation process performed by the cold-formed seat attachment profile of the present invention;
FIG. 10 is a drawing of the 8 th rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 11 is a drawing of the cold-formed seat attachment section of the present invention undergoing the deformation process of the 9 th pass rolling;
FIG. 12 is a drawing of the 10 th rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 13 is a drawing of the 11 th rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 14 is a drawing of the 12 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 15 is a drawing of the 13 th rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 16 is a drawing of the 14 th rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 17 is a drawing of the 15 th rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 18 is a16 th rolling deformation process diagram of the cold-formed seat attachment section of the present invention;
FIG. 19 is a drawing of the 17 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 20 is a drawing of the 18 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 21 is a drawing of the 19 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 22 is a drawing of the 20 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 23 is a drawing of the 21 st pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 24 is a drawing of the 22 nd pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 25 is a drawing of the 23 rd pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 26 is a drawing of the 24 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 27 is a drawing of the 25 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 28 is a drawing of the 26 st pass of the 1 st group rolling deformation process performed by the cold-formed seat attachment profile of the present invention;
FIG. 29 is a schematic view of the 26 nd 2 nd group rolling deformation process performed by the cold-formed seat attachment profile of the present invention;
FIG. 30 is a drawing of the 27 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 31 is a drawing of the 28 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 32 is a drawing of the 29 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
FIG. 33 is a drawing of the 30 th pass rolling deformation process performed by the cold-formed seat attachment section of the present invention;
the symbols in the figures illustrate: j0101, product number; 01-01 to 30-02: numbering the rollers; n063 or N080: and (4) rolling the shaft diameter of the roller.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth below to provide a thorough understanding of the present invention, but it will be apparent to those skilled in the art that the present invention may be practiced without these details. Well-known components, methods and processes are not described in detail below.
The invention provides a cold-bending seat fixing section bar of a passenger car, and with reference to fig. 1 and 2, the cold-bending seat fixing section bar comprises a section bar main body 10, wherein any longitudinal section of the section bar main body is of a 6-shaped or approximately 6-shaped structure, and the section bar main body comprises a rectangular square pipe 11 and a wing plate 12, wherein the rectangular square pipe 11 is mainly used as a bearing piece and plays a supporting role; and the wing plate 12 is a functional part and is mainly used for fixing a cold-bending seat of a passenger car. Rectangle side pipe 11 and pterygoid lamina 12 are by a belted steel integrated into one piece, wherein, rectangle side pipe 11 upper end edge has an arc joint section, pterygoid lamina 12 by arc joint section is to the lateral extension bending type one-tenth.
Referring to fig. 2, the longitudinal section of the wing plate 12 is a double-layer L-shaped structure formed by bending a strip steel back and forth, so that the structural strength and the installation function of the wing plate 12 are ensured, and the upper end surface of the wing plate 12 is flush with the upper end surface of the rectangular square tube 11.
The invention also provides a manufacturing process of the cold-bending seat fixing section, which is characterized in that longitudinal shearing strip steel is placed on a continuous multifunctional rolling production line, is continuously rolled and formed by a plurality of rollers and is subjected to laser welding, and the process comprises the following steps:
1) And (3) rolling deformation of the 1 st pass:
as shown in fig. 3, the upper rolls 01-01 and the lower rolls 01-02, 01-03, 01-04 are paired deforming rolls; a rolling angle a1-1=170 °, a rolling angle a1-2=170 °; a1-1= a1-2. The radius of the arc of the roller is R1-1=33.97mm, R1-2=24.46mm;
2) And (3) rolling deformation of the 2 nd pass:
as shown in fig. 4, the upper rolls 02-05, 02-106 and the lower rolls 02-01, 02-02, 02-03, 02-04 are paired deforming rolls; a rolling angle a2-1=168 °, a rolling angle a2-2=158 °, a rolling angle a2-3=158 °, and a rolling angle a2-4=168 °; a2-1= a2-4, a2-2= a2-3. Roll arc radius R2-1=28.14mm, R2-2=14.90mm, R2-3=10.60mm and R2-4=36.19mm;
3) And (3) rolling deformation of the roller of the 3 rd pass:
as shown in FIG. 5, the upper rolls 03-05, 03-106 and the lower rolls 03-01, 03-02, 03-03, 03-04 are paired deforming rolls; a rolling angle a3-1=154 °, a rolling angle a3-2=144 °, a rolling angle a3-3=144 °, a rolling angle a3-4=154 °; a3-1= a3-4, a3-2= a3-3. Roll arc radius R3-1=12.47mm, R3-2=8.75mm, R3-3=6.15mm, R3-4=16.17mm;
4) And (4) rolling deformation of the roller of the 4 th pass:
as shown in FIG. 6, the upper rolls 04-05, 04-06, the lower rolls 04-01, 04-02, 04-03, 04-104 are paired deforming rolls; rolling angle a4-1=139 °, rolling angle a4-2=129 °, rolling angle a4-3=129 °, rolling angle a4-4=139 °; a4-1= a4-4, a4-2= a4-3. Roll arc radius R4-1=7.58mm, R4-2=5.93mm, R4-3=4.11mm, R4-4=9.91mm;
5) And (3) rolling deformation of the 5 th pass:
as shown in fig. 7, the upper rolls 05-05, 05-06, the lower rolls 05-01, 05-02, 05-03, 05-104 are paired deforming rolls; a rolling angle a5-1=125 °, a rolling angle a5-2=115 °, a rolling angle a5-3=115 °, and a rolling angle a5-4=125 °; a5-1= a5-4, a5-2= a5-3. Roll arc radius R5-1=5.43mm, R5-2=4.47mm, R5-3=3.07mm, R5-4=7.16mm;
6) And 6, roller deformation of the pass 6:
as shown in fig. 8, the upper rolls 06-05, 06-106, the lower rolls 06-01, 06-02, 06-03, 06-104 are paired texturing rolls; rolling angle a6-1=112 °, rolling angle a6-2=102 °, rolling angle a6-3=102 °, and rolling angle a6-4=112 °; a6-1= a6-4, a6-2= a6-3. Roll arc radius R6-1=4.24mm, R6-2=3.59mm, R6-3=2.43mm, R6-4=5.62mm;
7) And (3) rolling deformation of the 7 th pass:
as shown in fig. 9, the upper roll 07-03, the lower rolls 07-01, 07-02, and the vertical rolls 07-04, 07-05 are paired texturizing rolls; a rolling angle a7-1=110 °, a rolling angle a7-2=90 °, a rolling angle a7-3=90 °, and a rolling angle a7-4=110 °; a7-1= a7-4, a7-2= a7-3. Roll arc radius R7-1=3.48mm, R7-2=3.00mm, R7-3=2.00mm, and R7-4=4.65mm;
8) And (3) roller deformation of the 8 th pass:
as shown in FIG. 10, the upper rolls 08-03, 08-104 and the lower rolls 08-01, 08-02 are paired deforming rolls; a rolling angle a8-1=90 °, and a rolling angle a8-2=90 °; a8-1= a8-2. The radius of the arc of the roller is R8-1=3.00mm, R8-2=4.03mm;
9) And (3) rolling deformation of the roller of the 9 th pass:
as shown in fig. 11, the upper rolls 09-03, 09-104 and the lower rolls 09-01, 09-02 are paired texturing rolls; rolling angle a9-1=165 °, rolling angle a9-2=165 °; a9-1= a9-2. Roll arc radius R9-1=22.32mm, R9-2=28.54mm;
10 Roll deformation at pass 10):
as shown in fig. 12, the upper rolls 10-03, 10-104 and the lower rolls 10-01, 10-02 are paired deforming rolls; a rolling angle a10-1=150 °, a rolling angle a10-2=150 °; a10-1= a10-2. Roll arc radius R10-1=10.68mm, R10-2=13.78mm;
11 Pass 11 roll deformation:
as shown in fig. 13, the upper rolls 11-03, 11-104 and the lower rolls 11-01, 11-02 are paired deforming rolls; a rolling angle a11-1=135 °, a rolling angle a11-2=135 °; a11-1= a11-2. The radius of a circular arc of the roller is R11-1=6.83mm, R11-2=8.88mm;
12 Roll deformation at pass 12):
as shown in fig. 14, the upper rolls 12-03, 12-104, the lower rolls 12-01, 12-02, and the vertical rolls 12-06 are paired texturing rolls; a rolling angle a12-1=120 °, and a rolling angle a12-2=120 °; a12-1= a12-2. The radius of the arc of the roller is R12-1=4.91mm, R12-2=6.44mm;
13 Pass 13 roll deformation:
as shown in fig. 15, the upper rolls 13-03, 13-104, the lower rolls 13-01, 13-02, and the vertical rolls 13-05, 13-06 are paired texturing rolls; a rolling angle a13-1=105 °, a rolling angle a13-2=105 °; a1= a2. Roll arc radius R13-1=3.77mm, R13-2=4.97mm;
14 Roll deformation at pass 14):
as shown in fig. 16, the upper rolls 14-03, 14-104, the lower rolls 14-01, 14-02, and the vertical rolls 14-05, 14-06 are paired deformed rolls; a rolling angle a14-1=90 °, and a rolling angle a14-2=90 °; a1= a2. The radius of a circular arc of the roller is R14-1=3.00mm and R14-2=4.00mm;
15 Roll deformation for pass 15):
as shown in fig. 17, the upper rolls 15-04, 15-105, the lower rolls 15-01, 15-02, 15-03, and the vertical rolls 15-106 are paired texturing rolls; a rolling angle a15-1=170 °, a rolling angle a15-2=80 °; a15-1> a15-2. Roll arc radius R15-1=20.08mm, R15-2=3.54mm;
16 16 th pass roll deformation:
as shown in fig. 18, the upper rolls 16-04, 16-105, 16-106 and the lower rolls 16-01, 16-02, 16-03 are paired deforming rolls; a rolling angle a16-1=158 °, a rolling angle a16-2=73 °; a16-1> a16-2. The radius of the circular arc of the roller is R16-1=8.63mm, R16-2=2.90mm;
17 Pass 17 roll deformation:
as shown in fig. 19, the skew inserting rollers 17-103, the lower rollers 17-01, 17-02, and the vertical rollers 17-104 are paired deforming rollers; the rolling angle a17-1=49 °. The radius of the arc of the roller is R17-1=2.49mm;
18 Roll deformation at pass 18):
as shown in fig. 20, the skew inserting rollers 18-03, the lower rollers 18-01, 18-02 are paired deforming rollers; the rolling angle a18-1=140 °. The radius of the arc of the roller is R18-1=4.40mm;
19 Roll deformation at pass 19):
as shown in fig. 21, the skew-inserting rollers 19-03, the lower rollers 19-01, 19-02 are paired deforming rollers; the rolling angle a19-1=122 °. The radius of the circular arc of the roller is R19-1=3.00mm;
20 Roll deformation for pass 20):
as shown in fig. 22, the inclined insert rollers 20-103, the lower rollers 20-01, 20-02 and the vertical rollers 20-104 are paired deformation rollers; the rolling angle a is 20-1=35 °. The radius R20-1 of the circular arc of the roller is 2.16mm;
21 Pass 21 roll deformation:
as shown in fig. 23, the upper rolls 21-04, 21-05 and the lower rolls 21-01, 21-02, 21-03 are paired deforming rolls; rolling angle a21-1=112 °, rolling angle a21-2=22 °; a21-1 >. The radius of the arc of the roller is R21-1=3.00mm, R21-2=1.91mm;
22 Roll deformation at pass 22):
as shown in fig. 24, the upper rolls 22-04, 22-05, the lower rolls 22-01, 22-02, 22-03, and the vertical rolls 22-06 are paired deformed rolls; a rolling angle a22-1=102 °, a rolling angle a22-2=10 °; a1= a2. The radius of the arc of the roller is R22-1=3.00mm, R22-2=1.71mm;
23 Pass 23 roll deformation:
as shown in FIG. 25, the upper rolls 23-103, 23-104a, the lower rolls 23-01, 23-02, and the vertical rolls 23-04, 23-05 are paired texturing rolls; the rolling angle a23-1=95 °. The radius of a circular arc of the roller is R23-1=3.00mm, R23-2=1.56mm;
24 Roll deformation at pass 24):
as shown in fig. 26, the upper roll 24-03, the lower rolls 24-01, 24-Backup, and the vertical rolls 24-04, 24-05 are paired deforming rolls; the rolling angle a24-1=30 °. The radius R24-1 of the circular arc of the roller is 1.00mm;
25 Pass 25 roll deformation:
as shown in fig. 27, the upper roll 25-03, the lower rolls 25-01, 25-Backup, and the vertical rolls 25-04, 25-05 are paired deformed rolls; the rolling angle a25-1=90 °. The radius of the roller arc is R25-1=3.0mm;
and a laser welding stage, combining 3 parts of raw materials of the wing plate: combining 3 raw materials of the wing plate part of the cold-bending seat fixing profile simultaneously by an online CO2 laser welding process and matching with two groups of extrusion rollers of the 26 th pass; the extrusion is specifically as follows:
27 Pass 26) first set of squeeze rolls:
as shown in fig. 28, the oblique insert rollers 26-03 and 26-05, the lower roller 26-01, and the vertical rollers 26-02 and 26-04 are paired squeeze rollers; the rolling angle a26-1=89.5 °. The radius R26-1 of the circular arc of the roller is 3.0mm;
28 Pass 26) second set of squeeze rolls:
as shown in fig. 28, the vertical rolls 26a-1, 26a-2 are paired squeeze rolls; the rolling angle a26-1=89.5 °. The radius of the arc of the roller is R26-1=3.0mm;
29 Finishing stage of the cold-bending seat fixing profile: in the roll deformation process, as shown in fig. 29 to 32, the cold-bent seat fixing profile after rough rolling forming and laser welding is finished from the 27 th pass to the 30 th pass to meet various precision requirements; the specific finishing is as follows:
30 Pass 27, pass 28 and pass 29 adopt four-roller separation type straightening heads to ensure flatness and straightness of straight edges so as to meet the requirements of product specification:
31 And) adjusting the torsion degree of the cold-bending seat fixing profile by adopting a Turkish head straightening machine in the 30 th pass so as to meet the specified requirements of products.
32 The arc section is gradually formed in each stage of the rolling deformation process, namely in the whole process from the 1 st pass to the 25 th pass, the radius R value of the arc of the roller in each pass is reduced from large to small, the gap between two layers of raw materials of the wing plate is reduced from large to small, and the gap is finally equal to the product value;
33 Product core changes during the forming process: in the process of roller deformation, the core gradually moves upwards from the 1 st pass to the 8 th pass; the core remains unchanged from pass 9 to pass 30. So as to ensure that the center of the circular arc is always on the same straight line at each stage of the section of the formed section.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (6)
1. The utility model provides a cold-formed seat fixed section bar of passenger train, includes a section bar main part, the arbitrary longitudinal section of section bar main part is "6" font, and this section bar main part is including the rectangle side pipe and a pterygoid lamina that is used for fixed passenger train cold-formed seat of supporting role together, rectangle side pipe and pterygoid lamina are by a belted steel integrated into one piece, wherein, rectangle side pipe upper end edge has an arc and combines the section, the pterygoid lamina by arc combines the section to extend the bending type to the side and forms, its characterized in that, this cold-formed seat fixed section bar's manufacturing process includes following step:
(1) And strip steel selection: selecting strip steel with the adaptive thickness and width according to the thickness of the cold-bending seat fixing section and the unfolded length of the cross section;
(2) And precision leveling of a strip steel 21 roller: leveling the strip steel through an online 21-roller precision leveling process;
(3) And a rough rolling stage of the fixed section bar of the cold bending seat: the rough rolling stage is mainly characterized in that an upper deformation roller and a lower deformation roller which are paired up are adopted, and a vertical roller and an oblique inserting roller are used as auxiliary rollers in partial passes, so that the strip steel is rolled into a rough-rolled and formed cold-bent seat fixed section; the rough rolling stage is from 1 st to 25 th, wherein the forming of the main structure of the cold-bending seat fixing profile is completed in the 1 st to 21 st passes, and the gaps of the rollers are shrunk and the raw materials of the wing plate part are extruded in the 22 nd to 25 th passes; the core of the fixed profile is gradually moved upwards in the 1 st to 8 th passes of the roller; the core remains unchanged from pass 9 to pass 30;
(4) And a laser welding stage: combining 3 raw materials of the wing plate part of the cold-bending seat fixing profile simultaneously by an online CO2 laser welding process and matching with two groups of extrusion rollers of the 26 th pass;
(5) And finishing the cold bending seat fixing section: in the process of roller deformation, the cold-bending seat fixing section after rough rolling forming and laser welding is finished from 27 th to 30 th passes to meet various precision requirements.
2. The fixing profile for a cold-formed seat of a passenger car as claimed in claim 1, wherein: the upper end face of the wing plate is flush with the upper end face of the rectangular square tube.
3. A cold-formed seat attachment profile for passenger vehicles as claimed in claim 1, wherein: the longitudinal section of the wing plate is of a transversely placed L-shaped structure.
4. A cold-bent seat fixing profile for a passenger vehicle according to claim 3, wherein: the wing plate is of a double-layer L-shaped structure formed by bending the strip steel back and forth.
5. A cold-formed seat attachment profile for passenger vehicles as claimed in claim 1, wherein: in the rolling deformation process, the arc section is gradually formed in each stage, and the gap between two layers of raw materials of the wing plate is gradually reduced and finally equal to the product value.
6. A cold-formed seat attachment profile for passenger vehicles as claimed in claim 1, wherein: in the step (5), four-roller separation type straightening heads are adopted from the 27 th pass to the 29 th pass so as to ensure the flatness and the straightness of the product; and adjusting the torsion degree of the cold-bending seat fixing section by adopting a Turkish head straightening machine in the 30 th pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710358469.6A CN107244267B (en) | 2017-05-19 | 2017-05-19 | Cold-bending seat fixing profile of passenger car and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710358469.6A CN107244267B (en) | 2017-05-19 | 2017-05-19 | Cold-bending seat fixing profile of passenger car and manufacturing process thereof |
Publications (2)
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| CN112337991A (en) * | 2019-08-08 | 2021-02-09 | 大连金诺格工业科技有限公司 | Manufacturing equipment and manufacturing method of high-precision special-shaped steel section |
| CN111916603B (en) * | 2020-08-07 | 2022-11-04 | 苏州亿创特智能制造有限公司 | Rolled section bar, preparation method thereof, battery pack framework and battery pack |
| CN114347875A (en) * | 2021-12-29 | 2022-04-15 | 金龙联合汽车工业（苏州）有限公司 | Special-shaped section, automobile seat fixing structure and manufacturing process |
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| CN104180151A (en) * | 2014-08-21 | 2014-12-03 | 宋宇光 | Special-shaped supporting 6-shaped tube |
| CN204956159U (en) * | 2015-09-23 | 2016-01-13 | 安徽安凯汽车股份有限公司 | Passenger train is with pavement roof beam |
| CN205890462U (en) * | 2016-06-27 | 2017-01-18 | 郑州宇通客车股份有限公司 | Wind channel fixed beam and use passenger train of this wind channel fixed beam |
| CN206704001U (en) * | 2017-05-19 | 2017-12-05 | 厦门金龙联合汽车工业有限公司 | A kind of clod wash seat of car fixes section bar |
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