Automobile front axle and preparation method thereof
阅读说明：本技术 一种汽车前轴及其制备方法 (Automobile front axle and preparation method thereof ) 是由 黄洪胜 于 2019-10-28 设计创作，主要内容包括：本发明涉及一种汽车前轴及其制备方法,该前轴包括前轴本体(3)、前轴左臂(1)、前轴右臂(4)、钢板面(2)、重合部分(5),前轴左臂(1)、前轴右臂(4)分别连接于前轴本体(3)两端,钢板面(2)焊接在前轴本体(3)两端上部,所述前轴本体(3)为中空结构,凹陷呈工字形。本发明前轴制造工艺简单、设备投资少、模具容易实现标准化、换型快、换型费用低、生产准备时间短、生产工序少、前轴重量轻、成本低,且强度高。(The invention relates to an automobile front axle and a preparation method thereof, wherein the front axle comprises a front axle body (3), a front axle left arm (1), a front axle right arm (4), a steel plate surface (2) and a superposition part (5), the front axle left arm (1) and the front axle right arm (4) are respectively connected to two ends of the front axle body (3), the steel plate surface (2) is welded on the upper parts of two ends of the front axle body (3), and the front axle body (3) is of a hollow structure and is sunken in an I shape. The front axle of the invention has simple manufacturing process, less equipment investment, easy standardization of the mould, quick mould changing, low mould changing cost, short production preparation time, less production procedures, light weight of the front axle, low cost and high strength.)
1. The utility model provides an automobile front axle, includes front axle body (3), front axle left arm (1), front axle right arm (4), steel sheet face (2), coincidence portion (5), and front axle left arm (1), front axle right arm (4) are connected respectively in front axle body (3) both ends, and steel sheet face (2) welding is on front axle body (3) both ends upper portion, its characterized in that: the front shaft body (3) is of a hollow structure, two sides of the front shaft body (3) are inwards sunken, and the hollow part of the cross section of the middle section of the front shaft body (3) is sunken in an I shape; the end parts of the front axle left arm (1) and the front axle right arm (4) are positioned in the two ends of the front axle body (3) to form a superposition part (5).
2. The automotive front axle according to claim 1, characterized in that: the middle of the front shaft body (3) is recessed from the middle of the front shaft body (3) to any position of the overlapping part (5) towards the middle shaft side, and the recessed parts of the front shaft body (3) are symmetrical in the middle plane.
3. The automotive front axle according to claim 1, characterized in that: the front axle left arm (1) and the front axle right arm (4) have the same structure and are symmetrical relative to the middle plane.
4. The automotive front axle according to claim 1, characterized in that: the overlapped part (5) is welded tightly at the direct edge.
5. The automotive front axle according to claim 1, characterized in that: the overlapping part (5) is connected through a fixing bolt: the fixing bolt penetrates through the front shaft left arm (1), the front shaft right arm (4) and the front shaft body (3), and the edges of the overlapped parts are tightly welded.
6. The automotive front axle according to claim 1, characterized in that: the overlapping parts (5) are connected by clamping: the front axle left arm (1) and the front axle right arm (4) are respectively provided with a concave hole in the front axle main body (3), the overlapped part of the pipe wall of the front axle main body (3) and the hole is inwards concave to clamp the left arm and the right arm, and the edge of the overlapped part (5) is tightly welded.
7. The automotive front axle according to claim 1, characterized in that: the thickness of the shaft arm of the front shaft body (3) is 0.5-3 cm; the section of the overlapped part (5) is round, oval, semicircle, trapezoid or square and is solid.
8. A method for manufacturing a front axle of an automobile, for manufacturing a front axle according to any one of claims 1 to 7, comprising the steps of:
(1) cutting the tube material into a fixed-length tube blank with a required size, wherein the size is determined according to a front axle production diagram;
(2) connecting the right arm and the left arm of the front shaft with the tube blank, and placing the two arms in two ends of the tube blank to form a superposed part;
(3) sealing and welding the front shaft right arm, the front shaft left arm and the pipe blank to prepare a semi-finished front shaft;
(4) heating the semi-finished front shaft in the step 3 to 850-950 ℃, and extruding the pipe blank of the front shaft body inwards to form an I shape;
(5) steel plate surfaces are welded at the upper parts of the two ends of the front shaft body;
(6) and (3) performing oil cooling on the product obtained in the step (5) after 840-870-degree quenching, performing air cooling on the product obtained in the step (550) -620-degree tempering, and polishing the product after cooling to obtain the automobile front axle.
9. The method for manufacturing an automobile front axle according to claim 8, characterized in that: step 3 can be replaced by connecting through a fixing bolt, wherein the fixing bolt penetrates through the front shaft left arm, the front shaft right arm and the front shaft body and seals and welds the edges.
10. The method for manufacturing an automobile front axle according to claim 8, characterized in that: step 3 can be replaced by clamping connection: the front axle left arm (1) and the front axle right arm (4) are respectively provided with a concave hole in the front axle main body (3), the overlapped part of the pipe wall of the front axle main body (3) and the hole is inwards concave to clamp the left arm and the right arm, and the edge of the overlapped part (5) is tightly welded.
Technical Field
The invention relates to an automobile supporting device, in particular to an automobile front axle and a preparation method thereof.
Background
The automobile front axle mostly adopts an I-shaped axle body, the I-shaped axle is formed by integral die forging, and the section is I-shaped, so the I-shaped axle is called. The I-shaped shaft and the front steel plate spring seat are forged into a whole, and the middle part of the I-shaped shaft is provided with a downward fall to avoid interference with an engine oil sump. The I-shaped shaft is made of Cr steel and is subjected to modulation treatment, and the weight of the I-shaped shaft is reduced as much as possible on the premise of ensuring the strength during design. The front axle assembly bears the weight of the automobile, vertical load between the ground and the frame, braking force, lateral force, bending moment caused by the lateral force and the like.
The existing vehicle I-shaped front axle technology is mature, but because the I-shaped steel axle body is not strong enough in bending resistance and torsion resistance, the I-shaped steel axle body can deform under emergency, so that the vehicle is out of control to cause traffic accidents, and the loss of lives and property is caused; the existing process is manufactured by die forging, the process is complicated, the length of a shaft body cannot be flexibly adjusted according to the requirements of customers, and the mass of the shaft before construction is large, so that the process is not suitable for the development trend of future light weight.
Disclosure of Invention
The invention aims to provide an automobile front axle and a preparation method thereof, wherein a hollow front axle main body is manufactured by adopting a tube blank through a forming process, and a front axle left arm and a front axle right arm are assembled, so that the manufacturing process is simple, a mold is easy to realize standardization, the mold replacement is quick, the production procedures are few, the front axle is light in weight, the cost is low, and the strength is high.
The invention relates to an automobile front axle which comprises a front axle body (3), a front axle left arm (1), a front axle right arm (4), a steel plate surface (2) and a superposition part (5), wherein the front axle left arm (1) and the front axle right arm (4) are respectively connected to two ends of the front axle body (3), the steel plate surface (2) is welded on the upper parts of two ends of the front axle body (3), the front axle body (3) is of a hollow structure, two sides of the front axle body (3) are inwards sunken, and the hollow part of the cross section of the middle section of the front axle body (3) is sunken in an I shape.
The end parts of the front axle left arm (1) and the front axle right arm (4) are positioned in the two ends of the front axle body (3) to form a superposition part (5).
The middle of the front shaft body (3) is recessed from the middle of the front shaft body (3) to any position of the overlapping part (5) towards the middle shaft side, and the recessed parts of the front shaft body (3) are symmetrical in the middle plane.
The thickness of the shaft arm of the front shaft body (3) is 0.5-3 cm.
The front axle left arm (1) and the front axle right arm (4) are identical in structure and symmetrical relative to the middle plane.
The overlapping part (5) can be directly welded with the edge tightly.
The overlapped part (5) can also be connected through a fixing bolt, the fixing bolt penetrates through the front shaft left arm (1), the front shaft right arm (4) and the front shaft body (3), and the edge of the overlapped part is tightly welded.
The overlapping parts (5) can also be connected by clamping: : the front axle left arm (1) and the front axle right arm (4) are respectively provided with a concave hole in the front axle main body (3), the overlapped part of the pipe wall of the front axle main body (3) and the hole is inwards concave to clamp the left arm and the right arm, and the edge of the overlapped part (5) is tightly welded.
The section of the overlapped part (5) is circular, elliptical, semicircular, trapezoidal or square and is solid.
The automobile front axle is prepared by the following method:
(1) cutting the tube material into a fixed-length tube blank with required size, wherein the size is determined according to a front axle product drawing, and the specific size is 1.3-2.5 m;
(2) connecting the right arm and the left arm of the front shaft with the tube blank, and placing the two arms in two ends of the tube blank to form a superposed part;
(3) sealing and welding the superposed parts of the front shaft right arm and the front shaft left arm and the pipe blank to prepare a semi-finished front shaft;
(4) heating the semi-finished front shaft in the
(5) steel plate surfaces are welded at the upper parts of the two ends of the front shaft body;
(6) and (3) performing oil cooling on the product obtained in the step (5) after 840-870-degree quenching, performing air cooling at 550-630-degree quenching, and polishing after cooling to obtain the automobile front axle.
The
The
The tube blank is a 40cr or 20cr steel tube;
the tube blank is of a hollow structure, and the thickness of the tube blank is 0.5-3 cm.
The tube blank is one of a hollow circle, an ellipse, a semicircle, a trapezoid and a square.
The cross section of the fixing bolt is one of a circle, an ellipse, a semicircle, a trapezoid and a square.
The invention has the advantages of simple manufacturing process of the front axle, less equipment investment, easy realization of standardization of the mould, quick model change, low model change cost, short production preparation time, less production procedures, light weight of the front axle, low cost and high strength.
Drawings
FIG. 1: the front axle is in a schematic structure.
FIG. 2: front axle top view.
FIG. 3: schematic drawing of tube blank.
FIG. 4: the sectional view of the middle section of the front axle body.
FIG. 5: the left drawing is the sectional view of the direct welding mode, the middle is the sectional view of the fixing bolt connecting mode, and the right drawing is the sectional view of the clamping connecting mode.
Description of reference numerals: the front axle comprises a front axle left arm 1, a
Detailed Description
The attached drawings are illustrated by circular tube blanks, and other types of tube blank products are used to be the same as the structures of the circular tube blank products, and the invention is further described by combining the attached drawings and the embodiment:
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