Automotive steering knuckle forming die

Abstract

The utility model discloses a vehicle steering knuckle forming die which comprises a pouring cup, a transverse pouring gate is connected to the bottom of the pouring cup, inner pouring gates are connected to the two sides of the transverse pouring gate respectively, the inner pouring gates are connected with a steering knuckle casting die body through inner pouring gates connected with the inner pouring gates, and a dead head is arranged at the position, corresponding to a central bearing hole of a steering knuckle, of the steering knuckle casting die body. Overflow grooves are formed in the positions, corresponding to the steering arm circular truncated cone and the steering pull rod connecting arm, of the steering knuckle casting mold body. The overflow groove is additionally formed in the position, corresponding to the knuckle steering arm circular truncated cone, of the knuckle casting mold body, pearlite is added, and the product hardness is improved; and a 15 * 2 mm soup feed head is additionally arranged at the position, corresponding to the steering knuckle center bearing hole, of the steering knuckle casting mold body, so that the mold filling speed of a casting is guaranteed, the problem of material fluctuation is solved, and the problems that in the steering knuckle casting process, the casting material fluctuation is large, and the hardness of a steering arm circular truncated cone is low are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile steering knuckle, specifically to a forming die for automobile steering knuckle. BACKGROUND

[0002] Steering knuckle (Steering Knuckle) also called "goat horn", is one of the important parts in automobile steering bridge, can make automobile stable travel and sensitive transmission travel direction. The function of steering knuckle is to transmit and bear the load of the front of the automobile, support and drive the front wheel to rotate around the main pin and make the automobile turn. In the automobile travel state, it bears the variable impact load, therefore, requires that it has very high strength and manufacturing precision.

[0003] Steering knuckle is an important safety part of automobile, and all the industry people in the world attach great importance to its safety characteristics, fully understand that its safety characteristics have a special important role on the material quality of steering knuckle, and should be controlled throughout the manufacturing process. Steering knuckle is a machine part for realizing variable angle power transmission, which is used in the position where the direction of transmission shaft needs to be changed. It is the "joint" part of the universal transmission device of the automobile driving system. If the material quality of steering knuckle has a problem, it will have a great impact on the safety of the automobile.

[0004] High-grade material improves the carrying capacity of steering knuckle, and does not need to increase additional auxiliary function design, and the steering assembly structure is simple and stable. The steering knuckle of a certain brand belongs to a non-conventional material grade casting, and the specific requirements are as follows: the tensile strength is improved by 550MPa, the 0.2% yield strength is improved by 370MPa, the elongation is improved by 10%, and the impact experiment (-30 DEG C) is improved by 60J. Its material requirement is high, and the production of casting material fluctuates greatly in the development process. The hardness of the steering arm circular platform is low, and there are defects. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the utility model provides a forming die for automobile steering knuckle to solve the problems of large casting material fluctuation and low hardness of the steering arm circular platform in the casting process of steering knuckle.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] A forming die for automobile steering knuckle, comprising a sprue cup, the bottom of the sprue cup is connected with a cross gate, the two sides of the cross gate are connected with an inner gate respectively, the inner gate is connected with a steering knuckle casting mold body through a connected inner gate, the steering knuckle casting mold body is provided with a riser at the position corresponding to the steering knuckle center bearing hole, and the steering knuckle casting mold body is provided with an overflow groove at the position corresponding to the steering arm circular platform and the steering pull rod connecting arm.

[0008] Preferably, two inner gates are connected to each side of the cross gate respectively, and the inner gates are located at the end of the cross gate close to the gate cup and the end of the cross gate away from the gate cup respectively.

[0009] Preferably, the two inner gates at the end of the cross gate away from the gate cup are perpendicular to the cross gate, and the two inner gates at the end of the cross gate away from the gate cup are connected to an inner gate and a knuckle casting mold body respectively through an inner gate nest.

[0010] The two inner gates at the end of the cross gate close to the gate cup are in an obtuse angle structure with the cross gate, and the two inner gates at the end of the cross gate close to the gate cup are connected to two inner gates and two knuckle casting mold bodies through an inner gate nest.

[0011] Preferably, the cross gate corresponds to six knuckle casting mold bodies, the cross gate, the inner gate and the six knuckle casting mold bodies are not in contact, and the six knuckle casting mold bodies are compact and symmetrically distributed on both sides of the cross gate.

[0012] Preferably, the inner gate is arranged between the two overflow grooves on the knuckle casting mold body.

[0013] Preferably, the riser is vertically arranged on the top of the knuckle casting mold body.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses on the basis of prior art, through the additional overflow groove at the corresponding knuckle steering arm circular table of knuckle casting mold body, increase pearlite, improve product hardness, and increase 15*2mm's soup riser at the corresponding knuckle center bearing hole of knuckle casting mold body, guarantee casting filling speed, improve material quality fluctuation problem, solve the problem of big casting material quality fluctuation and low hardness at the steering arm circular table in the process of knuckle casting.

[0016] The utility model improves the important position metallography of knuckle, improves the product mechanical property anomaly caused by pearlite and casting filling speed, highlights the uniformity of overall performance, improves tensile strength, adjusts the mechanical property of product from the aspect of metallographic microcosm, reduces the badness caused by insufficient product tensile strength, reduces customer negative feedback, reaches the double control product quality of microcosm and macrocosm. DRAWINGS

[0017] Figure 1 It is the overall structure of the utility model overhead view.

[0018] In the drawing: 1, gate cup, 2, cross gate, 3, inner gate, 4, inner gate, 5, knuckle casting mold body, 6, riser, 7, overflow groove, 8, inner gate nest. CONCRETE IMPLEMENTATION

[0019] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1 As shown, this utility model provides a technical solution: a vehicle steering knuckle forming mold, including a pouring cup 1, a horizontal runner 2 connected to the bottom of the pouring cup 1, an inner runner 3 connected to both sides of the horizontal runner 2, the inner runner 3 being connected to the steering knuckle mold body 5 through a connected inner gate 4, and the inner gate 4 being located between two overflow grooves 7 on the steering knuckle mold body 5.

[0021] A riser 6 is provided at the position of the steering knuckle center bearing hole on the steering knuckle mold body 5. The riser 6 is vertically provided on the top of the steering knuckle mold body 5. An overflow groove 7 is provided at the positions of the steering arm frustum and the steering tie rod connecting arm on the steering knuckle mold body 5.

[0022] Two ingates 3 are connected to each side of the horizontal runner 2. The ingates 3 are located at the end of the horizontal runner 2 that is close to the pouring cup 1 and the end that is away from the pouring cup 1. The horizontal runner 2 corresponds to the six steering knuckle mold bodies 5. The horizontal runner 2, the ingates 3 and the six steering knuckle mold bodies 5 do not contact each other, and the six steering knuckle mold bodies 5 are compactly and symmetrically distributed on both sides of the horizontal runner 2.

[0023] The two ingates 3 at the end of the horizontal runner 2 away from the sprue cup 1 are perpendicular to the horizontal runner 2. The two ingates 3 at the end of the horizontal runner 2 away from the sprue cup 1 are each connected to an ingate 4 and a steering knuckle mold body 5 through an ingate recess 8. The two ingates 3 at the end of the horizontal runner 2 near the sprue cup 1 form an obtuse angle with the horizontal runner 2. The two ingates 3 at the end of the horizontal runner 2 near the sprue cup 1 are each connected to two ingates 4 and two steering knuckle mold bodies 5 through an ingate recess 8.

[0024] By adding an overflow groove 7 to the steering arm frustum corresponding to the steering knuckle mold body 5, pearlite is increased, improving product hardness; and a 15*2mm inlet riser 6 is added to the steering knuckle mold body 5 corresponding to the steering knuckle center bearing hole to ensure casting filling speed, improve material fluctuation problems, comprehensively improve the metallographic structure of important parts of the steering knuckle, improve the abnormal mechanical properties of the product caused by pearlite and casting filling speed, highlight the uniformity of overall performance, improve tensile strength, adjust the mechanical properties of the product at the metallographic micro level, reduce defects caused by insufficient tensile strength, reduce negative customer feedback, and achieve dual control of product quality at both the micro and macro levels.

[0025] It is to be understood that the terminology used herein such as the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not required to comprise only those elements but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses.

[0026] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forming die for a knuckle for a vehicle, characterized by: The gate cup (1) is connected with the cross runner (2), the cross runner (2) is connected with the inner runner (3) on both sides, the inner runner (3) is connected with the knuckle casting mold body (5) through the inner gate (4), the knuckle casting mold body (5) is provided with the riser (6) corresponding to the knuckle center bearing hole, and the knuckle casting mold body (5) is provided with the overflow groove (7) corresponding to the steering arm circular table and the steering pull rod connecting arm.

2. The knuckle forming die for vehicle wheels according to claim 1, wherein: The cross runner (2) is connected with two inner runners (3) on both sides, and the inner runners (3) are located at one end of the cross runner (2) close to the gate cup (1) and the other end away from the gate cup (1).

3. The knuckle forming die for vehicle wheels according to claim 2, wherein: The two inner runners (3) at the end of the cross runner (2) away from the gate cup (1) are perpendicular to the cross runner (2), and the two inner runners (3) at the end of the cross runner (2) away from the gate cup (1) are connected with one inner gate (4) and one knuckle casting mold body (5) through the inner runner nest (8) respectively. The two inner runners (3) at the end of the cross runner (2) close to the gate cup (1) are connected with the cross runner (2) in an obtuse angle structure, and the two inner runners (3) at the end of the cross runner (2) close to the gate cup (1) are connected with two inner gates (4) and two knuckle casting mold bodies (5) through the inner runner nest (8) respectively.

4. The knuckle forming die for vehicle wheels according to claim 3, wherein: The cross runner (2) corresponds to six knuckle casting mold bodies (5), the cross runner (2), the inner runner (3) and the six knuckle casting mold bodies (5) are not in contact, and the six knuckle casting mold bodies (5) are compact and symmetrically distributed on both sides of the cross runner (2).

5. The knuckle forming die of claim 1 wherein: The inner gate (4) is arranged between the two overflow grooves (7) on the knuckle casting mold body (5).

6. The knuckle forming die of claim 1 wherein: The riser (6) is vertically arranged on the top of the knuckle casting mold body (5).

Images