Manufacturing method of automobile steering ball joint

Abstract

This invention discloses a manufacturing method for an automotive steering ball joint, comprising the following steps: S1, machining and forming a base plate and a retaining ring; S2, machining a ball joint mounting mechanism; S3, assembling the ball joint mounting mechanism and the retaining ring; and S4, manufacturing and assembling the end cap. The manufacturing process of this invention is simple, facilitating the installation and disassembly of the automotive steering ball joint, and significantly improving the assembly accuracy and quality between the ball joint positioning assembly and the retaining ring, thereby extending the service life of the automotive steering ball joint and reducing maintenance costs.

Description

Technical Field

[0001] This invention relates to a method for manufacturing automotive steering ball joints. Background Technology

[0002] The steering ball joint assembly is one of the important parts of an automobile, enabling the vehicle to drive stably and transmit driving direction sensitively. The steering ball joint assembly mainly consists of a connector, a ball pin, and the ball head of the ball pin is connected to the ball hole of the connector, and the ball joint seat is used for positioning connection.

[0003] The manufacturing process of steering ball joints in the existing technology is complex, which not only makes assembly inconvenient but also results in large precision errors, affecting the service life of the steering ball joint and increasing maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to provide a technical solution for manufacturing automotive steering ball joints to address the shortcomings of existing technologies. This manufacturing process is simple, which not only facilitates the installation and disassembly of automotive steering ball joints, but also greatly improves the assembly accuracy and quality between the ball joint positioning component and the fixing ring, extends the service life of automotive steering ball joints, and reduces maintenance costs.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A method for manufacturing a car steering ball joint, characterized by comprising the following steps:

[0007] S1. Base plate and retaining ring are machined and formed.

[0008] a. First, the required base plate and fixing ring are integrally formed by casting. The fixing ring and the base plate are connected by a connecting part.

[0009] b. Then, three mounting holes are made on the side of the base plate away from the fixing ring, and the three mounting holes are distributed in a triangle.

[0010] c. Next, limit holes are made along the fixed ring so that the limit holes pass through both ends of the fixed ring. Countersunk holes are made evenly in a ring shape along the top surface of the fixed ring, and slots are made evenly in a ring shape along the bottom surface of the fixed ring. Positioning holes are made between the countersunk holes and slots so that the positioning holes connect the countersunk holes and slots.

[0011] d. Finally, the surfaces of the base plate, positioning ring, and limiting holes are polished.

[0012] S2, Ball Head Mounting Mechanism Machining

[0013] a. First, determine the dimensions of the first positioning ring and the sleeve based on the dimensions of the fixing ring and the limiting hole, and process the corresponding first positioning ring and sleeve. The top of the sleeve is welded to the first positioning ring. The sleeve and the first positioning ring are concentric circles. The bottom of the sleeve is evenly connected with inserts, which protrude from the bottom surface of the sleeve.

[0014] b. Then, according to the size and distribution of the countersunk hole and the positioning hole, the corresponding column and positioning column are fixedly connected along the bottom surface of the first positioning ring. The positioning column is connected to the first positioning ring through the column, and the other end of each positioning column is connected to a threaded column. The column facilitates the fixed connection between the positioning column and the first positioning ring. It is connected to the threaded column through the nut to realize the quick assembly of the second positioning ring and further improve the installation stability between the ball head positioning assembly and the fixed ring.

[0015] c. Next, determine the size of the ball head cap according to the size of the ball head, process the corresponding ball head cap, and open the first arc surface and through hole along the ball head cap so that the through hole connects to the first arc surface. Grind and polish the first arc surface, and fix the ball head cap to the sleeve on the side close to the first positioning ring.

[0016] d. Then, process the corresponding second positioning ring according to the size of the first positioning ring. At the same time, according to the size and distribution of the slot and the insert, fix the corresponding insert along the top surface of the second positioning ring, open the corresponding slot along the inner edge of the top surface of the second positioning ring, open the concave hole on the bottom surface of the second positioning ring opposite to the insert, and open the external thread along the outer circumferential side of the second positioning ring.

[0017] S3, Ball head mounting mechanism and retaining ring assembly

[0018] a. First, place the fixing ring horizontally with the side with the countersunk hole facing upwards and the limiting hole in a vertical position. Then, place the sleeve vertically above the limiting hole, insert the sleeve into the limiting hole, and insert each positioning pin into the corresponding positioning hole. Simultaneously move the sleeve and positioning pin downwards until the bottom of the column touches the countersunk hole.

[0019] b. Then, with the side of the second positioning ring with the locking blocks facing upwards, each locking block is inserted into its corresponding slot. The threaded rod at the bottom of the positioning post passes through the locking block and connects to the recessed hole. At the same time, the insert at the bottom of the sleeve is inserted into the corresponding slot on the second positioning ring. Then, the nut is connected to each threaded post for fixation, realizing the fixed fit between the ball joint mounting mechanism and the fixed ring. By inserting the insert into the slot, the positioning between the sleeve and the second positioning ring is realized, improving the stability and reliability of the connection between the sleeve and the second positioning ring. The column matches the countersunk hole, the positioning post matches the positioning hole, and the locking block matches the slot. Through the design of the limiting hole, countersunk hole, slot, and positioning hole, stable assembly can be achieved, preventing shaking and improving the reliability of the manufacturing method of the automotive steering ball joint.

[0020] S4, End Cap Manufacturing and Assembly

[0021] a. First, determine the dimensions of the end cap and ball head seat based on the dimensions of the second positioning ring and the sleeve, and process the corresponding end cap and ball head seat. Then, grind and polish the second arc-shaped surface on the ball head seat.

[0022] b. Then, the ball head seat is fixedly installed on the inner side of the end cover through the base, so that the ball head seat and the base cooperate to form an oil storage cavity, and the base and the inner wall of the end cover cooperate to form an annular groove. The annular groove matches the second positioning ring, and an internal thread is opened along the inner wall of the end cover. The design of the annular groove makes it easy for the end cover to be fitted onto the second positioning ring, and the threaded connection realizes the fixed connection between the end cover and the ball head positioning assembly, making installation and disassembly convenient and quick.

[0023] c. Next, select a ball head with a ball head handle and place it inside the sleeve, so that the ball head handle passes through the through hole on the ball head cap;

[0024] d. Finally, lubricating oil is added to the oil reservoir, and the ball head seat is placed into the sleeve through the end cap. The end cap is rotated to make it threadedly connected with the second positioning ring.

[0025] Furthermore, in step S1 process a, the fixing ring is inclinedly connected to the base plate.

[0026] Furthermore, the thickness of the base plate is H, where 9mm < H < 11mm.

[0027] Furthermore, the diameter of the mounting hole is L, where 10mm < L < 12mm.

[0028] Furthermore, the countersunk holes, slots, and positioning holes in step S1 correspond one-to-one, improving the stability and reliability of the connection.

[0029] Furthermore, the length of the sleeve is greater than the length of the limiting hole, which facilitates the formation of a dust cover mounting groove between the first positioning ring and the fixed ring after the ball head mounting mechanism is assembled, for installing the dust cover.

[0030] Furthermore, the diameter of the upright is larger than that of the positioning post, which facilitates the rapid assembly of the upright and positioning post. At the same time, it can be used with the second positioning ring to improve the connection strength and stability between the ball head mounting mechanism and the fixing ring.

[0031] Furthermore, after the ball head mounting mechanism is connected to the fixed ring, a dust cover mounting groove is formed between the first positioning ring and the fixed ring.

[0032] The manufacturing process is simple, which not only facilitates the installation and disassembly of automotive steering ball joints, but also greatly improves the assembly accuracy and quality between the ball joint positioning assembly and the retaining ring, extends the service life of automotive steering ball joints, and reduces maintenance costs.

[0033] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0034] 1. The manufacturing process is simple, which not only facilitates the installation and disassembly of the automotive steering ball joint, but also greatly improves the assembly accuracy and quality between the ball joint positioning component and the fixing ring, extends the service life of the automotive steering ball joint, and reduces maintenance costs.

[0035] 2. The column facilitates the fixed connection between the positioning column and the first positioning ring. It is connected to the threaded column by a nut, which enables the quick assembly of the second positioning ring and further improves the installation stability between the ball head positioning assembly and the fixed ring. Attached Figure Description

[0036] The present invention will be further described below with reference to the accompanying drawings:

[0037] Figure 1 This is a process flow diagram of the manufacturing method of the automotive steering ball joint of the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of the automotive steering ball joint in this invention;

[0039] Figure 3 for Figure 2 The main view;

[0040] Figure 4 This is a schematic diagram showing the connection between the fixing ring and the ball head mounting mechanism in this invention;

[0041] Figure 5 This is a schematic diagram of the structure of the fixing ring in this invention;

[0042] Figure 6 for Figure 5 Schematic diagram of the structure in direction A;

[0043] Figure 7 This is a schematic diagram of the ball head positioning assembly in this invention;

[0044] Figure 8 for Figure 7 Schematic diagram of the structure in the B direction;

[0045] Figure 9 This is a schematic diagram of the end cap structure in this invention;

[0046] Figure 10 This is a schematic diagram of the bottom structure of the sleeve in this invention;

[0047] Figure 11 This is a schematic diagram of the structure of the second positioning ring in this invention.

[0048] In the diagram: 1-Base plate; 2-Connecting part; 3-Fixing ring; 4-Ball head mounting mechanism; 5-Mounting hole; 6-Ball head positioning assembly; 7-End cap; 8-Dust cover mounting groove; 9-Limiting hole; 10-Counterhead; 11-Positioning hole; 12-Slot; 13-Sleeve; 14-First positioning ring; 15-Ball head cap; 16-Second positioning ring; 17-Clamping block; 18-Column; 19-Positioning post; 20-Through hole; 21-First arc-shaped surface; 22-Concave hole; 23-Nut; 24-Base; 25-Annular groove; 26-Ball head seat; 27-Second arc-shaped surface; 28-Oil reservoir; 29-Slot; 30-Insertion block. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] like Figures 1 to 11 The diagram illustrates a method for manufacturing a car steering ball joint according to the present invention, comprising the following steps:

[0053] S1, base plate 1 and fixing ring 3 are processed and formed.

[0054] a. First, the required base plate 1 and fixing ring 3 are integrally formed by casting. The fixing ring 3 is connected to the base plate 1 through the connecting part 2. The fixing ring 3 is inclined to the base plate 1 to meet the installation requirements of the steering ball joint. The thickness of the base plate 1 is H, 9mm < H < 11mm.

[0055] b. Then, three mounting holes 5 are made on the side of the base plate 1 away from the fixing ring 3. The three mounting holes 5 are distributed in a triangle. The diameter of the mounting holes 5 is L, 10mm < L < 12mm.

[0056] c. Next, limit holes 9 are made on the fixing ring 3 so that the limit holes 9 pass through both ends of the fixing ring 3. Countersunk holes 10 are made in a ring evenly along the top surface of the fixing ring 3, and slots 12 are made in a ring evenly along the bottom surface of the fixing ring 3. Positioning holes 11 are made between the corresponding countersunk holes 10 and slots 12 so that the positioning holes 11 connect the countersunk holes 10 and slots 12. The countersunk holes 10, slots 12 and positioning holes 11 correspond one-to-one, which improves the stability and reliability of the connection.

[0057] d. Finally, the surfaces of the base plate 1, the positioning ring, and the limiting hole 9 are polished.

[0058] S2, Ball Head Mounting Mechanism 4 Processing

[0059] a. First, determine the dimensions of the first positioning ring 14 and the sleeve 13 based on the dimensions of the fixed ring 3 and the limiting hole 9, and process the corresponding first positioning ring 14 and sleeve 13. The top of the sleeve 13 is welded to the first positioning ring 14, and the sleeve 13 and the first positioning ring 14 are concentric circles. The bottom of the sleeve 13 is evenly connected with insert blocks 30, which protrude from the bottom surface of the sleeve 13. The length of the sleeve 13 is greater than the length of the limiting hole 9, so that after the ball head mounting mechanism 4 is assembled, a dust cover mounting groove 8 is formed between the first positioning ring 14 and the fixed ring 3 for installing the dust cover.

[0060] b. Then, according to the size and distribution of the countersunk hole 10 and the positioning hole 11, the corresponding columns 18 and positioning posts 19 are fixedly connected along the bottom surface of the first positioning ring 14. The positioning posts 19 are connected to the first positioning ring 14 through the columns 18, and the other end of each positioning post 19 is connected to a threaded post. The columns 18 facilitate the fixed connection between the positioning posts 19 and the first positioning ring 14. They are connected to the threaded posts through the nuts 23 to realize the quick assembly of the second positioning ring 16 and further improve the installation stability between the ball head positioning assembly 6 and the fixed ring 3. The diameter of the columns 18 is larger than the diameter of the positioning posts 19, which facilitates the quick assembly of the columns 18 and the positioning posts 19. At the same time, it can cooperate with the second positioning ring 16 to improve the connection strength and stability between the ball head mounting mechanism 4 and the fixed ring 3.

[0061] c. Next, determine the size of the ball head cap 15 according to the size of the ball head, process the corresponding ball head cap 15, and open the first arc surface 21 and through hole 20 along the ball head cap 15 so that the through hole 20 connects to the first arc surface 21. Grind and polish the first arc surface 21, and fix the ball head cap 15 to the sleeve 13 on the side close to the first positioning ring 14.

[0062] d. Next, process the corresponding second positioning ring 16 according to the size of the first positioning ring 14. At the same time, according to the size and distribution of the slot 12 and the insert 30, fix the corresponding card block 17 along the top surface of the second positioning ring 16, and open the corresponding slot 29 along the inner edge of the top surface of the second positioning ring 16. Open the concave hole 22 at the position opposite to the card block 17 on the bottom surface of the second positioning ring 16, and open the external thread along the outer circumferential side of the second positioning ring 16.

[0063] S3, Ball head mounting mechanism 4 and retaining ring 3 assembly

[0064] a. First, place the fixing ring 3 horizontally with the side with the countersunk hole 10 facing upwards and the limiting hole 9 in a vertical position. Then, place the sleeve 13 vertically above the limiting hole 9, insert the sleeve 13 into the limiting hole 9, and insert each positioning pin 19 into the corresponding positioning hole 11. Simultaneously move the sleeve 13 and positioning pin 19 downwards until the bottom end of the column 18 abuts against the countersunk hole 10.

[0065] b. Then, with the side of the second positioning ring 16 with the locking block 17 facing upwards, each locking block 17 is inserted into the corresponding slot 12. The threaded rod at the bottom of the positioning post 19 passes through the locking block 17 and connects to the recess 22. At the same time, the insert 30 at the bottom of the sleeve 13 is inserted into the corresponding slot 29 on the second positioning ring 16. Then, the nut 23 is connected to each threaded post for fixation, realizing the fixed fit between the ball head mounting mechanism 4 and the fixing ring 3. By inserting the insert 30 into the slot 29, the positioning between the sleeve 13 and the second positioning ring 16 is realized, improving the positioning of the sleeve 13 and the second positioning ring. The stability and reliability of the connection between 16; the column 18 matches the countersunk hole 10, the positioning column 19 matches the positioning hole 11, and the locking block 17 matches the locking groove 12. Through the design of the limiting hole 9, the countersunk hole 10, the locking groove 12 and the positioning hole 11, stable assembly can be achieved, preventing shaking and improving the reliability of the manufacturing method of the automotive steering ball joint; after the ball joint mounting mechanism 4 is connected with the fixing ring 3, a dust cover mounting groove 8 is formed between the first positioning ring 14 and the fixing ring 3 for installing the dust cover to prevent dust from entering the sleeve 13 and affecting the service life of the ball joint.

[0066] S4, End Cap 7 Manufacturing and Assembly

[0067] a. First, determine the dimensions of the end cap 7 and the ball head seat 26 based on the dimensions of the second positioning ring 16 and the sleeve 13, and process the corresponding end cap 7 and ball head seat 26. Then, grind and polish the second arc-shaped surface 27 on the ball head seat 26.

[0068] b. Then, the ball head seat 26 is fixedly installed on the inner side of the end cover 7 through the base 24, so that the ball head seat 26 and the base 24 cooperate to form an oil storage cavity 28, and the base 24 and the inner wall of the end cover 7 cooperate to form an annular groove 25. The annular groove 25 matches the second positioning ring 16, and an internal thread is opened along the inner wall of the end cover 7. The design of the annular groove 25 makes it easy for the end cover 7 to be sleeved on the second positioning ring 16, and the threaded connection realizes the fixed connection between the end cover 7 and the ball head positioning assembly 6, making installation and disassembly convenient and quick.

[0069] c. Next, select a ball head with a ball head handle and place it inside the sleeve 13 so that the ball head handle passes through the through hole 20 on the ball head cover 15.

[0070] d. Finally, lubricating oil is added to the oil storage chamber 28, and the ball head seat 26 is placed into the sleeve 13 through the end cover 7. The end cover 7 is rotated to make it threadedly connected with the second positioning ring 16.

[0071] The manufacturing process is simple, which not only facilitates the installation and disassembly of the automotive steering ball joint, but also greatly improves the assembly accuracy and quality between the ball joint positioning component 6 and the fixing ring 3, extends the service life of the automotive steering ball joint, and reduces maintenance costs.

[0072] 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 method of manufacturing a steering knuckle for a vehicle, characterised by Includes the following steps: S1. Base plate and retaining ring are machined and formed. a. First, the required base plate and fixing ring are integrally formed by casting. The fixing ring and the base plate are connected by a connecting part. b. Then, three mounting holes are made on the side of the base plate away from the fixing ring, and the three mounting holes are distributed in a triangle. c. Next, limit holes are made on the fixed ring so that the limit holes pass through both ends of the fixed ring. Countersunk holes are made evenly in a ring shape along the top end of the fixed ring, and slots are made evenly in a ring shape along the bottom end of the fixed ring. Positioning holes are made between the countersunk holes and slots so that the positioning holes connect the countersunk holes and slots. d. Finally, the surfaces of the base plate, positioning ring, and limiting holes are polished. S2, Ball Head Mounting Mechanism Machining a. First, determine the dimensions of the first positioning ring and the sleeve based on the dimensions of the fixing ring and the limiting hole, and process the corresponding first positioning ring and sleeve. The top of the sleeve is welded to the first positioning ring. The sleeve and the first positioning ring are concentric circles. The bottom of the sleeve is evenly connected with inserts, which protrude from the bottom surface of the sleeve. b. Then, according to the size and distribution of the countersunk hole and the positioning hole, the corresponding column and positioning column are fixedly connected along the bottom surface of the first positioning ring. The positioning column is connected to the first positioning ring through the column, and the other end of each positioning column is connected to a threaded column. c. Next, determine the size of the ball head cap according to the size of the ball head, process the corresponding ball head cap, and open the first arc surface and through hole along the ball head cap so that the through hole connects to the first arc surface. Grind and polish the first arc surface, and fix the ball head cap to the sleeve on the side close to the first positioning ring. d. Then, process the corresponding second positioning ring according to the size of the first positioning ring. At the same time, according to the size and distribution of the slot and the insert, fix the corresponding insert along the top surface of the second positioning ring, open the corresponding slot along the inner edge of the top surface of the second positioning ring, open the concave hole on the bottom surface of the second positioning ring opposite to the insert, and open the external thread along the outer circumferential side of the second positioning ring. S3, Ball head mounting mechanism and retaining ring assembly a. First, place the fixing ring horizontally with the side with the countersunk hole facing upwards and the limiting hole in a vertical position. Then, place the sleeve vertically above the limiting hole, insert the sleeve into the limiting hole, and insert each positioning pin into the corresponding positioning hole. Simultaneously move the sleeve and positioning pin downwards until the bottom of the column touches the countersunk hole. b. Then, with the side of the second positioning ring with the locking block facing upwards, each locking block is inserted into the corresponding slot. The threaded rod at the bottom of the positioning post passes through the locking block and connects to the concave hole. At the same time, the insert at the bottom of the sleeve is inserted into the corresponding slot on the second positioning ring. Then, the nut is connected to each threaded post for fixation, so as to achieve a fixed fit between the ball head mounting mechanism and the fixed ring. S4, End Cap Manufacturing and Assembly a. First, determine the dimensions of the end cap and ball head seat based on the dimensions of the second positioning ring and the sleeve, and process the corresponding end cap and ball head seat. Then, grind and polish the second arc-shaped surface on the ball head seat. b. Then, the ball head seat is fixedly installed on the inner side of the end cover through the base, so that the ball head seat and the base cooperate to form an oil storage cavity, and the base and the inner wall of the end cover cooperate to form an annular groove. The annular groove matches the second positioning ring, and an internal thread is opened along the inner wall of the end cover. c. Next, select a ball head with a ball head handle and place it inside the sleeve, so that the ball head handle passes through the through hole on the ball head cap; d. Finally, lubricating oil is added to the oil reservoir, and the ball head seat is placed into the sleeve through the end cap. The end cap is rotated to make it threadedly connected with the second positioning ring.

2. The method for manufacturing an automobile steering ball joint according to claim 1, characterized in that: In step S1 process a, the fixing ring is inclinedly connected to the base plate.

3. The method for manufacturing an automobile steering ball joint according to claim 1, characterized in that: The thickness of the base plate is H, where 9mm < H < 11mm.

4. The method for manufacturing an automobile steering ball joint according to claim 1, characterized in that: The diameter of the mounting hole is L, where 10mm < L < 12mm.

5. The method for manufacturing an automotive steering ball joint according to claim 1, characterized in that: The countersunk hole, the slot, and the positioning hole in step S1 correspond one-to-one.

6. The method for manufacturing an automobile steering ball joint according to claim 1, characterized in that: The length of the sleeve is greater than the length of the limiting hole.

7. The method for manufacturing an automobile steering ball joint according to claim 1, characterized in that: The diameter of the upright is larger than the diameter of the positioning post.

8. The method for manufacturing an automobile steering ball joint according to claim 1, characterized in that: After the ball head mounting mechanism is connected to the fixing ring, a dust cover mounting groove is formed between the first positioning ring and the fixing ring.

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