A structure for interchangeability of left and right parts of a steering knuckle turning fixture

Abstract

The invention discloses a left-right interchangeable structure of a steering knuckle lathe fixture, which relates to the field of automobile steering knuckles, and comprises a bottom plate, on which a clamping point tie rod B is fixedly mounted, the clamping point tie rod B has two clamping rods, and is positioned by a bracket positioning point arranged in front of the clamping point tie rod B; the clamping point tie rod A and the clamping point tie rod C are symmetrically distributed on both sides of the clamping point tie rod B, and can be detachably mounted on the bottom plate; the clamping point tie rod A and the clamping point tie rod C both have an outer clamping rod and an inner clamping rod, the outer clamping rod is used to clamp the shock absorber arm of the steering knuckle, and is positioned by a shock absorber arm positioning point arranged on the bottom plate; the inner clamping rod is used to clamp the steering tie rod of the steering knuckle, and is positioned by a steering tie rod positioning point arranged on the bottom plate. The left-right parts of the invention can be quickly replaced during lathe machining, and the tooling only needs to be designed and manufactured to clamp three tie rods, and no redundant structure will be idle when replacing parts; the structure is simple and the manufacturing cost is low.

Description

Technical Field

[0001] The invention relates to the field of automobile steering knuckles, and in particular to a left-right parts interchangeable structure of a steering knuckle turning fixture. Background Art

[0002] The steering knuckle is an important component in the automobile braking system. The steering knuckle structure is divided into left steering knuckle and right steering knuckle, and the two structures are symmetrical. The steering knuckle machine is used to process the bearing hole and end face of the OP10 car (hereinafter referred to as turning), and the bearing hole is used as the positioning hole for subsequent processing. The turning tool uses a hydraulic pull rod type to clamp the workpiece. The positioning reference of the tool adopts the "3-2-1" limit method to limit the six degrees of freedom. The "3" Z-direction limits are located at the steering rod, the bracket hole (near the lower ball head), and the shock absorber arm, and there is a height difference at the three points; the "2" X-direction limits are located on the side of the lower ball head and the side of the shock absorber arm; the "1" Y-direction limit is located on the top end face of the lower ball head. Using the existing technical solution, the left steering knuckle needs 3 Z-direction limits, and the right steering knuckle needs 3 Z-direction limits. Because the three Z-direction limits have a height difference, only one limit can be shared. The left and right parts need 5 support points and clamping points (pull rods) to switch. The tie rod needs to be fixed on the equipment tie rod. If all five tie rods are installed in place first, the tie rods may interfere with product processing, and the tie rod angles and clamping points need to be adjusted after reinstallation, which is time-consuming. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a left-right interchangeable structure for a steering knuckle turning fixture. Only three pull rods are needed to solve the problem of switching between left and right parts. This solves the problem that more than four pull rods require more bottom plate avoidance holes, resulting in the inability to install contact points and positioning points, and the problem that idle pull rods will interfere with the product. The overall structure is relatively simple.

[0004] The objective of the present invention is achieved through the following technical scheme: the left and right parts interchangeable structure of the steering knuckle turning fixture comprises a base plate, a clamping point tie rod A, a clamping point tie rod B and a clamping point tie rod C, the base plate is fixed with a clamping point tie rod B, the clamping point tie rod B has two pressure rods respectively used to clamp the bracket end faces of the left steering knuckle and / or the right steering knuckle, and is positioned by a bracket positioning point arranged in front of the clamping point tie rod B; the clamping point tie rod A and the clamping point tie rod C are symmetrically distributed on both sides of the clamping point tie rod B, and can be detachably mounted on the base plate; the clamping point tie rod A and the clamping point tie rod C both have an outer pressure rod and an inner pressure rod, the outer pressure rod is used to clamp the shock absorber arm of the steering knuckle, and is positioned by a shock absorber arm positioning point arranged on the base plate; the inner pressure rod is used to clamp the steering tie rod of the steering knuckle, and is positioned by a steering tie rod positioning point arranged on the base plate.

[0005] As a further technical solution, the clamping point tie rod C is located on the left side of the clamping point tie rod B, and a steering tie rod positioning point is provided under the inner pressure rod of the clamping point tie rod C. A lower ball head top end face contact point and a lower ball head side contact point are also installed on the left side of the clamping point tie rod B for contacting and fixing the lower ball head of the steering knuckle; the clamping point tie rod A is located on the right side of the clamping point tie rod B, and a shock absorber arm positioning point is provided under the outer pressure rod of the clamping point tie rod A. A shock absorber arm side contact point, a reverse thrust plate A and a reverse thrust plate B are also installed on the right side of the clamping point tie rod B to achieve clamping of the left steering knuckle.

[0006] As a further technical solution, the clamping point tie rod A is located on the left side of the clamping point tie rod B, and a shock absorber arm positioning point is provided under the outer pressure rod of the clamping point tie rod A. A shock absorber arm side contact point, a reverse thrust plate A, and a reverse thrust plate B are also installed on the left side of the clamping point tie rod B; the clamping point tie rod C is located on the right side of the clamping point tie rod B, and a steering tie rod positioning point is provided under the inner pressure rod of the clamping point tie rod C. A lower ball head top end face contact point and a lower ball head side contact point are also installed on the right side of the clamping point tie rod B for contacting and fixing the lower ball head of the steering knuckle to achieve clamping of the right steering knuckle.

[0007] As a further technical solution, the clamping point tie rod C is located on the left side of the clamping point tie rod B, a steering tie rod positioning point is arranged under the inner pressure rod of the clamping point tie rod C, and a shock absorber arm positioning point is arranged under the outer pressure rod of the clamping point tie rod C; the clamping point tie rod A is located on the right side of the clamping point tie rod B, a steering tie rod positioning point is arranged under the inner pressure rod of the clamping point tie rod A, and a shock absorber arm positioning point is arranged under the outer pressure rod of the clamping point tie rod A; two groups of positioning components consisting of the shock absorber arm side contact point, the reverse thrust plate A, the reverse thrust plate B, the lower ball head top end face contact point and the lower ball head side contact point are symmetrically arranged on both sides of the clamping point tie rod B, so as to clamp the left steering knuckle and the right steering knuckle at the same time.

[0008] The beneficial effects of the present invention are as follows: the left and right parts can be quickly replaced during machining of the tooling, the tooling only needs to be designed and manufactured to press 3 tie rods, and no redundant structure will be idle when replacing parts; the structure is simple and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0010] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0011] Figure 3 It is a schematic diagram of the structure when clamping the left steering knuckle.

[0012] Figure 4 It is a schematic diagram of the structure when clamping the right steering knuckle.

[0013] Figure 5 The structure of the present invention is schematically shown Figure 3 .

[0014] Figure 6 This is a schematic diagram of the structure when the left steering knuckle and the right steering knuckle are supported together.

[0015] Figure 7 for Figure 5 Side view of.

[0016] Explanation of the accompanying drawings: base plate 1, shock absorber arm positioning point 2, shock absorber arm side contact point 3, reverse thrust plate A4, clamping point tie rod A5, reverse thrust plate B6, bracket positioning point 7, clamping point tie rod B8, lower ball head top end surface contact point 9, lower ball head side contact point 10, clamping point tie rod C11, steering tie rod positioning point 12, outer pressure rod 13, inner pressure rod 14. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings:

[0018] Embodiment 1: As attached Figure 1 , 3 As shown, a left-right interchangeable structure of a steering knuckle turning fixture comprises a base plate 1, a clamping point tie rod A5, a clamping point tie rod B8 and a clamping point tie rod C11. The base plate 1 is fixed with a clamping point tie rod B8, and the clamping point tie rod B8 has two pressure rods respectively used to clamp the bracket end faces of the left steering knuckle and / or the right steering knuckle, and is positioned by a bracket positioning point 7 arranged in front of the clamping point tie rod B8; the clamping point tie rod A5 and the clamping point tie rod C11 are symmetrically distributed on both sides of the clamping point tie rod B8, and can be detachably installed on the base plate 1; the clamping point tie rod A5 and the clamping point tie rod C11 both have an outer pressure rod 13 and an inner pressure rod 14 (such as Figure 7 As shown), the outer pressure rod 13 is used to clamp the shock absorber arm of the steering knuckle, and is positioned by the shock absorber arm positioning point 2 provided on the bottom plate 1; the inner pressure rod 14 is used to clamp the steering tie rod of the steering knuckle, and is positioned by the steering tie rod positioning point 12 provided on the bottom plate 1. The clamping point tie rod C11 is located on the left side of the clamping point tie rod B8, and the steering tie rod positioning point 12 is provided below the inner pressure rod 14 of the clamping point tie rod C11. The lower ball head top end surface contact point 9 and the lower ball head side contact point 10 are also installed on the left side of the clamping point tie rod B8 for contacting and fixing the lower ball head of the steering knuckle; the clamping point tie rod A5 is located on the right side of the clamping point tie rod B8, and the shock absorber arm positioning point 2 is provided below the outer pressure rod 13 of the clamping point tie rod A5. The shock absorber arm side contact point 3, the reverse thrust plate A4, and the reverse thrust plate B6 are also installed on the right side of the clamping point tie rod B8 to achieve the clamping of the left steering knuckle (as shown Figure 3 shown).

[0019] Example 2: Figure 2 , 4 As shown, the difference from Example 1 is that the clamping point tie rod A5 is located on the left side of the clamping point tie rod B8, and a shock absorber arm positioning point 2 is provided below the outer pressure rod 13 of the clamping point tie rod A5. A shock absorber arm side contact point 3, a reverse thrust plate A4, and a reverse thrust plate B6 are also installed on the left side of the clamping point tie rod B8; the clamping point tie rod C11 is located on the right side of the clamping point tie rod B8, and a steering tie rod positioning point 12 is provided below the inner pressure rod 14 of the clamping point tie rod C11. A lower ball head top end face contact point 9 and a lower ball head side contact point 10 are also installed on the right side of the clamping point tie rod B8 for contacting the lower ball head of the fixed steering knuckle to achieve clamping of the right steering knuckle (such as Figure 4 shown).

[0020] Example 3: Figure 5 , 6 As shown, the difference from Example 1 is that the clamping point tie rod C11 is located on the left side of the clamping point tie rod B8, a steering tie rod positioning point 12 is arranged below the inner pressure rod 14 of the clamping point tie rod C11, and a shock absorber arm positioning point 2 is arranged below the outer pressure rod 13 of the clamping point tie rod C11; the clamping point tie rod A5 is located on the right side of the clamping point tie rod B8, a steering tie rod positioning point 12 is arranged below the inner pressure rod 14 of the clamping point tie rod A5, and a shock absorber arm positioning point 2 is arranged below the outer pressure rod 13 of the clamping point tie rod A5; two groups of positioning components consisting of the shock absorber arm side contact point 3, the reverse thrust plate A4, the reverse thrust plate B6, the lower ball head top end face contact point 9 and the lower ball head side contact point 10 are symmetrically arranged on both sides of the clamping point tie rod B8 to achieve simultaneous clamping of the left steering knuckle and the right steering knuckle.

[0021] The present invention can not only clamp the left steering knuckle or the right steering knuckle alone, but also clamp the left and right steering knuckles at the same time. Figure 1 The structure in the clamping state is as follows Figure 3 As shown; when clamping the right steering knuckle alone, remove the shock absorber arm side contact point 3, reverse thrust plate A4, reverse thrust plate B6, lower ball head top end surface contact point 9 and lower ball head side contact point 10 respectively and install them to the symmetrical position with the original position, and at the same time swap the shock absorber arm positioning point 2 and the steering tie rod positioning point 12, so that the shock absorber arm positioning point 2 corresponds to the outer pressure rod 13 of the pressing point tie rod A5, and the steering tie rod positioning point 12 corresponds to the inner pressure rod 14 of the pressing point tie rod C11, as shown in FIG. Figure 2 As shown, the clamping state is shown Figure 4 When you need to clamp the left and right steering knuckles at the same time, use Figure 5 In the structure, the shock absorber arm positioning point 2 is installed under the outer pressure rod 13 of the pressing point rod A5 and the pressing point rod C11, and the steering rod positioning point 12 is installed under the inner pressure rod 14. The clamping state is as follows Figure 6 shown.

[0022] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the protection scope of the claims attached to the present invention.

Claims

1. A left and right parts interchangeable structure of a steering knuckle turning fixture, characterized in that: The invention comprises a base plate (1), a clamping point tie rod A (5), a clamping point tie rod B (8) and a clamping point tie rod C (11), wherein the base plate (1) is fixedly mounted with the clamping point tie rod B (8), the clamping point tie rod B (8) having two clamping rods respectively used for clamping the bracket end faces of the left steering knuckle and / or the right steering knuckle, and being positioned by a bracket positioning point (7) arranged in front of the clamping point tie rod B (8); the clamping point tie rod A (5) and the clamping point tie rod C (11) are symmetrically distributed at the clamping point. The two sides of the tie rod B (8) are detachably mounted on the bottom plate (1); the clamping point tie rod A (5) and the clamping point tie rod C (11) both have an outer pressure rod (13) and an inner pressure rod (14); the outer pressure rod (13) is used to clamp the shock absorber arm of the steering knuckle and is positioned through the shock absorber arm positioning point (2) provided on the bottom plate (1); the inner pressure rod (14) is used to clamp the steering tie rod of the steering knuckle and is positioned through the steering tie rod positioning point (12) provided on the bottom plate (1); When it is necessary to clamp the left steering knuckle: the clamping point tie rod C (11) is located on the left side of the clamping point tie rod B (8), a steering tie rod positioning point (12) is provided below the inner pressure rod (14) of the clamping point tie rod C (11), and a lower ball head top end face contact point (9) and a lower ball head side contact point (10) are also installed on the left side of the clamping point tie rod B (8) for contacting and fixing the lower ball head of the steering knuckle; the clamping point tie rod A (5) is located on the right side of the clamping point tie rod B (8), a shock absorber arm positioning point (2) is provided below the outer pressure rod (13) of the clamping point tie rod A (5), and a shock absorber arm side contact point (3), a reverse thrust plate A (4), and a reverse thrust plate B (6) are also installed on the right side of the clamping point tie rod B (8); When the right steering knuckle needs to be clamped: the clamping point tie rod A (5) is located on the left side of the clamping point tie rod B (8), a shock absorber arm positioning point (2) is provided below the outer pressure rod (13) of the clamping point tie rod A (5), and a shock absorber arm side contact point (3), a reverse thrust plate A (4), and a reverse thrust plate B (6) are also installed on the left side of the clamping point tie rod B (8); the clamping point tie rod C (11) is located on the right side of the clamping point tie rod B (8), a steering tie rod positioning point (12) is provided below the inner pressure rod (14) of the clamping point tie rod C (11), and a lower ball head top end face contact point (9) and a lower ball head side contact point (10) are also installed on the right side of the clamping point tie rod B (8) for contacting and fixing the lower ball head of the steering knuckle; When it is necessary to clamp the left steering knuckle and the right steering knuckle at the same time: the clamping point tie rod C (11) is located on the left side of the clamping point tie rod B (8), a steering tie rod positioning point (12) is provided below the inner pressure rod (14) of the clamping point tie rod C (11), and a shock absorber arm positioning point (2) is provided below the outer pressure rod (13) of the clamping point tie rod C (11); the clamping point tie rod A (5) is located on the right side of the clamping point tie rod B (8), and a shock absorber arm positioning point (2) is provided below the outer pressure rod (13) of the clamping point tie rod C (11); A steering tie rod positioning point (12) is arranged below the inner pressure rod (14) of the pressure point tie rod A (5), and a shock absorber arm positioning point (2) is arranged below the outer pressure rod (13) of the pressure point tie rod A (5); two groups of positioning components consisting of a shock absorber arm side contact point (3), a reverse thrust plate A (4), a reverse thrust plate B (6), a lower ball head top end face contact point (9) and a lower ball head side contact point (10) are symmetrically arranged on both sides of the pressure point tie rod B (8).

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