Manufacturing process of automobile steering ball head

Abstract

The invention discloses a manufacturing process of an automobile steering ball head. The manufacturing process comprises the following steps of integral machining and forming of a fixing ring and a bottom plate, installation of a cooling mechanism, machining and installation of a first ball head seat, machining and forming and installation of a ball head body and a ball head handle, machining of a second ball head seat and installation of a dust cover. The manufacturing and machining precision of the automobile steering ball head is improved, the service life of lubricating oil can be prolonged, the working stability of the automobile steering ball head is improved, and the service life of the automobile steering ball head is prolonged.

Description

Technical Field

[0001] This invention relates to a manufacturing process for an automotive steering ball joint. Background Technology

[0002] The steering ball joint is a key connecting component in the steering system. Its main function is to enable multi-angle rotation between the steering tie rod and the steering knuckle, ensuring steering agility and handling stability. Because the steering ball joint needs to withstand frequent oscillations and loads during operation, it is usually filled with lubricating oil to reduce friction and delay wear.

[0003] The performance of lubricating oil is closely related to its operating temperature. The ideal operating temperature range for lubricating oil in automotive steering systems is typically between 40°C and 80°C. When the temperature is below 40°C, the viscosity of the lubricating oil is too high, and its fluidity deteriorates, which may lead to sluggish steering response and reduced power steering effect. When the temperature exceeds 80°C, the oil is prone to oxidation and deterioration, resulting in decreased lubrication performance and even accelerating the aging of seals and wear of components, affecting the reliability and service life of the steering system.

[0004] Existing steering ball joints mostly employ a closed lubrication design, making it difficult for the lubricating oil to dissipate heat effectively during use. Prolonged operation at high temperatures can easily lead to lubrication failure, increasing the risk of ball joint wear. Traditional manufacturing processes suffer from low precision and complex assembly in ball joint seat machining, oil passage layout, and cooling system integration, making it difficult to meet the requirements of high-performance steering systems for lubrication stability and heat dissipation efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a technical solution for the manufacturing process of automotive steering ball joints to address the shortcomings of existing technologies. This solution not only improves the manufacturing precision of automotive steering ball joints but also extends the service life of lubricating oil, thereby improving the working stability and service life of automotive steering ball joints.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A manufacturing process for an automotive steering ball joint, characterized by comprising the following steps:

[0008] S1, the fixing ring and the base plate are integrally machined.

[0009] a. First, determine the dimensions of the fixing ring and the base plate according to the design requirements, and make the corresponding molds. The required fixing ring and base plate are formed by casting. The fixing ring and the base plate are fixedly connected by the connecting part. The bottom of the fixing ring is integrally formed with an arc-shaped cover that protrudes outward. The top of the fixing ring is set with an opening.

[0010] b. Then, make mounting holes along the base plate, so that the mounting holes vertically penetrate the base plate;

[0011] c. Next, grind along the outer surface of the fixing ring and the base plate, and then grind and polish along the inner wall of the fixing ring and the cover.

[0012] d. Finally, oil outlet and oil inlet channels are respectively opened on the cover and the retaining ring;

[0013] S2, Cooling mechanism installation

[0014] a. First, select a suitable cooling oil tank according to the size of the base plate, and install the evaporator and oil pump on the cooling oil tank;

[0015] b. Then select the first oil supply pipe and the second oil supply pipe. Connect one end of the first oil supply pipe to the oil outlet channel and seal it. Connect the other end to the cooling oil tank. Connect one end of the second oil supply pipe to the oil inlet channel and seal it. Connect the other end to the oil pump.

[0016] S3. Machining and installation of the first ball joint seat

[0017] a. First, determine the size of the first ball head seat according to the size of the fixed ring, process the required first ball head seat, and process the first spherical surface along the inner side of the first ball head seat;

[0018] b. Then, a first annular oil guide groove is opened along the top surface of the first ball head seat, and the bottom of the first annular oil guide groove has a circular arc structure.

[0019] c. Next, a first oil outlet is made on the first spherical surface near the first annular oil guide groove, and the first oil outlet is connected to the first annular oil guide groove.

[0020] d. Finally, the first spherical surface is ground and polished, and the processed first ball head seat is installed in the fixing ring with the first spherical surface facing upward.

[0021] S4. Machining and installation of the ball head and ball shank.

[0022] a. First, determine the size of the ball head according to the design requirements, form the required ball head and ball head handle through integral machining, and then grind and polish the outer surface of the ball head.

[0023] b. Then place the ball head into the first spherical surface, with the ball head handle facing upwards;

[0024] S5, Machining of the second ball joint

[0025] a. First, determine the size of the second ball head seat according to the size of the fixing ring. Then, the seat body and cover plate are spliced ​​together by integral processing to form the required second ball head seat. The second spherical surface is formed by processing along the inner side of the seat body.

[0026] b. Then, a second annular oil guide groove is opened along the bottom surface of the seat, and the top of the second annular oil guide groove has an arc-shaped structure.

[0027] c. Next, a second oil outlet is opened on the second spherical surface at a position away from the second annular oil guide groove, and the second oil outlet is connected to the second annular oil guide groove.

[0028] d. Next, grind and polish the second spherical surface, and open through holes along the cover plate;

[0029] e. Finally, install the processed second ball head seat with the side of the seat body facing down on the fixing ring. The second spherical surface fits against the outer surface of the ball head body. The second ball head seat, the first ball head seat, the ball head body and the fixing ring cooperate to form an oil cavity. The oil cavity is connected to the oil inlet channel. The cover plate and the fixing ring are fixedly connected by tightening screws.

[0030] S6. Dust cover installation

[0031] Select a suitable dust cover and connect it to the ball head handle and the retaining ring respectively using the first and second fastening rings.

[0032] This manufacturing process is simple and not only improves the manufacturing precision of automotive steering ball joints, but also extends the service life of lubricating oil, thereby improving the working stability and service life of automotive steering ball joints.

[0033] Furthermore, in step S1 process a, the fixed ring and the base plate form an angle, the angle of which is 60° to 70°, which can increase the working range of the steering ball joint without affecting the normal flow of lubricating oil.

[0034] Furthermore, the inner diameters of the oil outlet channel and the oil inlet channel in step S1 process d are matched, which is conducive to the stable outflow of lubricating oil. After cooling, it can be stably input into the fixed ring and the cover, ensuring the lubrication effect between the ball head body, the first ball head seat and the second ball head seat, and reducing friction and wear.

[0035] Furthermore, in step S2 process b, the first oil delivery pipe and the second oil delivery pipe are respectively equipped with a first valve and a second valve. Through the design of the first valve and the second valve, the opening and closing of the first oil delivery pipe and the second oil delivery pipe can be controlled to meet the flow requirements of lubricating oil.

[0036] Furthermore, in step S3 process a, the first spherical surface is formed by a downward indentation from the top side to the bottom side of the first ball head seat, which facilitates the ball head body to fit with the first spherical surface and improves the stability and reliability of the ball head body during rotation.

[0037] Furthermore, in step S5 process a, the second spherical surface is formed by protruding upward from one side of the bottom surface of the base body towards the cover plate side, which facilitates the fit between the ball head and the second spherical surface and improves the stability and reliability of the ball head when rotating.

[0038] Furthermore, the first and second annular oil guide grooves have a uniform depth of 5-10 mm, which facilitates the flow of cooled lubricating oil along the first and second annular oil guide grooves, and then flows out through each of the first and second oil outlet holes to lubricate the gap between the ball head and the first and second spherical surfaces, thereby reducing friction and wear.

[0039] Furthermore, both the first and second oil outlets are distributed in a ring with equal spacing.

[0040] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0041] This invention not only improves the manufacturing precision of automotive steering ball joints, but also extends the service life of lubricating oil, thereby improving the working stability and service life of automotive steering ball joints. Attached Figure Description

[0042] The present invention will be further described below with reference to the accompanying drawings:

[0043] Figure 1 This is a flowchart illustrating the manufacturing process of an automotive steering ball joint according to the present invention;

[0044] Figure 2 This is a schematic diagram of the steering ball joint in this invention;

[0045] Figure 3 This is a schematic diagram of the connection between the ball head and the fixing ring in this invention;

[0046] Figure 4 This is a schematic diagram of the structure of the first ball joint in this invention;

[0047] Figure 5 This is a schematic diagram of the structure of the second ball head seat in this invention;

[0048] Figure 6 for Figure 5 A schematic diagram of the structure in direction A.

[0049] In the diagram: 1-Base plate; 2-Connecting part; 3-Fixing ring; 4-Ball head handle; 5-Mounting hole; 6-Cooling oil tank; 7-First oil supply pipe; 8-Second oil supply pipe; 9-Oil pump; 10-First valve; 11-Second valve; 12-Dust cover; 13-Cover; 14-Ball head body; 15-First ball head seat; 16-Second ball head seat; 17-Fasting screw; 18-First fastening ring; 19-Second fastening ring; 20-Oil outlet channel; 21-Oil inlet channel; 22-Oil chamber; 23-First annular oil guide groove; 24-First oil outlet hole; 25-Seat body; 26-Cover plate; 27-Through hole; 28-Second annular oil guide groove; 29-Second oil outlet hole; 30-First spherical surface; 31-Second spherical surface; 32-Evaporator. Detailed Implementation

[0050] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0053] like Figures 1 to 6 The diagram illustrates a manufacturing process for an automotive steering ball joint according to the present invention, comprising the following steps:

[0054] S1, fixing ring 3 and base plate 1 are integrally machined.

[0055] a. First, determine the dimensions of the fixing ring 3 and the base plate 1 according to the design requirements, and make the corresponding mold. The required fixing ring 3 and base plate 1 are formed by casting. The fixing ring 3 and the base plate 1 are fixedly connected by the connecting part 2. The bottom of the fixing ring 3 is integrally formed with an arc-shaped cover 13. The cover 13 protrudes outward, and the top of the fixing ring 3 is provided with an opening.

[0056] The fixed ring 3 and the base plate 1 form an angle, which ranges from 60° to 70°. This can increase the working range of the steering ball joint without affecting the normal flow of lubricating oil.

[0057] b. Then, make mounting holes 5 along the base plate 1, so that the mounting holes 5 vertically penetrate the base plate 1;

[0058] c. Next, grind along the outer surface of the fixing ring 3 and the base plate 1, and then grind and polish along the inner wall of the fixing ring 3 and the cover 13.

[0059] d. Finally, an oil outlet channel 20 and an oil inlet channel 21 are respectively opened on the cover 13 and the fixing ring 3;

[0060] The inner diameters of the oil outlet channel 20 and the oil inlet channel 21 are matched, which is conducive to the stable outflow of lubricating oil. After cooling, it can be stably input into the fixing ring 3 and the cover 13, ensuring the lubrication effect between the ball head body 14, the first ball head seat 15 and the second ball head seat 16, and reducing friction and wear.

[0061] S2, Cooling mechanism installation

[0062] a. First, select a suitable cooling oil tank 6 according to the size of the base plate 1, and install the evaporator 32 and oil pump 9 on the cooling oil tank 6;

[0063] b. Then select the first oil supply pipe 7 and the second oil supply pipe 8. Connect one end of the first oil supply pipe 7 to the oil outlet channel 20 and seal it. Connect the other end to the cooling oil tank 6. Connect one end of the second oil supply pipe 8 to the oil inlet channel 21 and seal it. Connect the other end to the oil pump 9.

[0064] A first valve 10 and a second valve 11 are respectively installed on the first oil supply pipe 7 and the second oil supply pipe 8. Through the design of the first valve 10 and the second valve 11, the opening and closing of the first oil supply pipe 7 and the second oil supply pipe 8 can be controlled to meet the flow requirements of lubricating oil.

[0065] S3, Machining and Installation of the First Ball Head Seat 15

[0066] a. First, determine the size of the first ball head seat 15 according to the size of the fixing ring 3, process the required first ball head seat 15, and process the first spherical surface 30 along the inner side of the first ball head seat 15;

[0067] b. Then, a first annular oil guide groove 23 is opened along the top surface of the first ball head seat 15, and the bottom of the first annular oil guide groove 23 has an arc-shaped structure.

[0068] c. Next, a first oil outlet 24 is opened along the first spherical surface 30 near the first annular oil guide groove 23, and the first oil outlet 24 is connected to the first annular oil guide groove 23.

[0069] d. Finally, the first spherical surface 30 is ground and polished, and the processed first ball head seat 15 is installed in the fixing ring 3, with the first spherical surface 30 facing upwards.

[0070] S4, ball head body 14 and ball head handle 4 are machined, formed and installed.

[0071] a. First, determine the dimensions of the ball head 14 according to the design requirements, form the required ball head 14 and ball head handle 4 through integral machining, and polish the outer surface of the ball head 14.

[0072] b. Then place the ball head 14 into the first spherical surface 30, with the ball head handle 4 facing upwards;

[0073] S5, Second Ball Head Seat 16 Machining

[0074] a. First, determine the size of the second ball head seat 16 according to the size of the fixing ring 3. Then, the seat body 25 and the cover plate 26 are spliced ​​together to form the required second ball head seat 16 through integral processing. The second spherical surface 31 is formed along the inner side of the seat body 25.

[0075] The second spherical surface 31 is formed by protruding upward from one side of the bottom surface of the base 25 toward the side of the cover plate 26, which facilitates the fit between the ball head 14 and the second spherical surface 31, and improves the stability and reliability of the ball head 14 when rotating.

[0076] b. Then, a second annular oil guide groove 28 is opened along the bottom surface of the seat 25, and the top of the second annular oil guide groove 28 has an arc-shaped structure.

[0077] The first annular oil guide groove 23 and the second annular oil guide groove 28 have a uniform depth of 5-10 mm, which facilitates the flow of cooled lubricating oil along the first annular oil guide groove 23 and the second annular oil guide groove 28, and then flows out through each of the first oil outlet holes 24 and the second oil outlet holes 29 to lubricate the gap between the ball head body 14 and the first spherical surface 30 and the second spherical surface 31, thereby reducing friction and wear.

[0078] c. Next, a second oil outlet 29 is opened along the second spherical surface 31 at a position away from the second annular oil guide groove 28. The second oil outlet 29 is connected to the second annular oil guide groove 28.

[0079] The first oil outlet hole 24 and the second oil outlet hole 29 are both distributed in a ring with equal spacing.

[0080] d. Next, the second spherical surface 31 is ground and polished, and through holes 27 are opened along the cover plate 26;

[0081] e. Finally, the processed second ball head seat 16 is installed on the fixing ring 3 with the side with the seat body 25 facing down. The second ball head seat 16 is connected to the fixing ring 3 by fastening screws 17. The second spherical surface 31 is attached to the outer surface of the ball head body 14. The second ball head seat 16, the first ball head seat 15, the ball head body 14 and the fixing ring 3 cooperate to form an oil cavity 22. The oil cavity 22 is connected to the oil inlet channel 21. The cover plate 26 is fixedly connected to the fixing ring 3 by fastening screws.

[0082] S6, Dust Cover 12 Installation

[0083] Select a suitable dust cover 12 and connect the dust cover 12 to the ball head handle 4 and the fixing ring 3 respectively through the first fastening ring 18 and the second fastening ring 19.

[0084] This manufacturing process is simple and not only improves the manufacturing precision of automotive steering ball joints, but also extends the service life of lubricating oil, thereby improving the working stability and service life of automotive steering ball joints.

[0085] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to achieve substantially the same technical effect are all covered within the protection scope of the present invention.

Claims

1. A manufacturing process for an automotive steering ball joint, characterized in that... Includes the following steps: S1, the fixing ring and the base plate are integrally machined. a. First, determine the dimensions of the fixing ring and the base plate according to the design requirements, and make the corresponding molds. The required fixing ring and base plate are formed by casting. The fixing ring and the base plate are fixedly connected by the connecting part. The bottom of the fixing ring is integrally formed with an arc-shaped cover that protrudes outward. The top of the fixing ring is set with an opening. b. Then, make mounting holes along the base plate, so that the mounting holes vertically penetrate the base plate; c. Next, grind along the outer surface of the fixing ring and the base plate, and then grind and polish along the inner wall of the fixing ring and the cover. d. Finally, oil outlet and oil inlet channels are respectively opened on the cover and the retaining ring; S2, Cooling mechanism installation a. First, select a suitable cooling oil tank according to the size of the base plate, and install the evaporator and oil pump on the cooling oil tank; b. Then select the first oil supply pipe and the second oil supply pipe. Connect one end of the first oil supply pipe to the oil outlet channel and seal it. Connect the other end to the cooling oil tank. Connect one end of the second oil supply pipe to the oil inlet channel and seal it. Connect the other end to the oil pump. S3. Machining and installation of the first ball joint seat a. First, determine the size of the first ball head seat according to the size of the fixed ring, process the required first ball head seat, and process the first spherical surface along the inner side of the first ball head seat; b. Then, a first annular oil guide groove is opened along the top surface of the first ball head seat, and the bottom of the first annular oil guide groove has a circular arc structure. c. Next, a first oil outlet is made on the first spherical surface near the first annular oil guide groove, and the first oil outlet is connected to the first annular oil guide groove. d. Finally, the first spherical surface is ground and polished, and the processed first ball head seat is installed in the fixing ring with the first spherical surface facing upward. S4. Machining and installation of the ball head and ball shank. a. First, determine the size of the ball head according to the design requirements, form the required ball head and ball head handle through integral machining, and then grind and polish the outer surface of the ball head. b. Then place the ball head into the first spherical surface, with the ball head handle facing upwards; S5, Machining of the second ball joint a. First, determine the size of the second ball head seat according to the size of the fixing ring. Then, the seat body and cover plate are spliced ​​together by integral processing to form the required second ball head seat. The second spherical surface is formed by processing along the inner side of the seat body. b. Then, a second annular oil guide groove is opened along the bottom surface of the seat, and the top of the second annular oil guide groove has an arc-shaped structure. c. Next, a second oil outlet is opened on the second spherical surface at a position away from the second annular oil guide groove, and the second oil outlet is connected to the second annular oil guide groove. d. Next, grind and polish the second spherical surface, and open through holes along the cover plate; e. Finally, install the processed second ball head seat with the side of the seat body facing down on the fixing ring. The second spherical surface fits against the outer surface of the ball head body. The second ball head seat, the first ball head seat, the ball head body and the fixing ring cooperate to form an oil cavity. The oil cavity is connected to the oil inlet channel. The cover plate and the fixing ring are fixedly connected by tightening screws. S6. Dust cover installation Select a suitable dust cover and connect it to the ball head handle and the retaining ring respectively using the first and second fastening rings.

2. The manufacturing process of an automotive steering ball joint according to claim 1, characterized in that: In step S1 process a, the fixing ring and the base plate form an angle, the angle of which is 60° to 70°.

3. The manufacturing process of an automotive steering ball joint according to claim 1, characterized in that: The inner diameters of the oil outlet channel and the oil inlet channel in step S1 process d are matched.

4. The manufacturing process of an automotive steering ball joint according to claim 1, characterized in that: In step S2 process b, the first oil pipeline and the second oil pipeline are respectively equipped with a first valve and a second valve.

5. The manufacturing process of an automotive steering ball joint according to claim 1, characterized in that: In step S3 process a, the first spherical surface is formed by the downward indentation from the top side of the first ball head seat towards the bottom side.

6. The manufacturing process of an automotive steering ball joint according to claim 1, characterized in that: In step S5 process a, the second spherical surface is formed by protruding upward from one side of the bottom surface of the seat towards the cover plate.

7. The manufacturing process of an automotive steering ball joint according to claim 1, characterized in that: The depths of the first and second annular oil guide grooves are uniformly 5-10 mm.

8. The manufacturing process of an automotive steering ball joint according to claim 1, characterized in that: Both the first oil outlet and the second oil outlet are distributed in a ring with equal spacing.

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