Automobile steering knuckle contraction press-fitting device

Abstract

According to the technical scheme, the automobile steering knuckle contraction press-fitting device is characterized in that the automobile steering knuckle contraction press-fitting device comprises a supporting seat, and the supporting seat is used for supporting a steering knuckle; the upper pressing head is used for pressing the bushing into the steering knuckle by moving up and down; the guide sleeve is arranged between the upper pressing head and the lower pressing head, and the inner diameter of the guide sleeve is gradually reduced from top to bottom, so that the diameter of the lining is reduced to be smaller than the hole diameter of an inner hole of the knuckle mounting lining in the process that the lining penetrates through the guide sleeve from top to bottom; through the arrangement of the guide sleeve, in the process of pressing the bushing downwards, the diameter of the bushing can be gradually reduced through the constraint of the inner diameter of the bushing until the diameter of the bushing is reduced to be smaller than the diameter of the hole to be installed, so that the bushing can be smoothly and accurately installed in the hole, and the press-fitting efficiency and the yield are improved.

Description

Technical Field

[0001] The invention relates to the technical field of steering knuckle processing and production, and more specifically, to a shrinkage and pressing device for an automobile steering knuckle. Background Art

[0002] The steering knuckle is one of the important parts in the steering axle of an automobile. It can make the car run stably and sensitively transmit the driving direction. The function of the steering knuckle is to transmit and bear the front load of the car, support and drive the front wheels to rotate around the kingpin to steer the car. When the car is driving, it is subjected to variable impact loads, so it is required to have very high strength.

[0003] In the process of steering knuckle production, it is necessary to press-fit the bushing into the hole of the steering knuckle. In the traditional press-fitting process, most of the press-fitting is done manually, which not only consumes a lot of manual labor, but also has the problems of low press-fitting efficiency and low press-fitting yield. Now there is an urgent need for mechanized press-fitting to replace manual press-fitting to improve the efficiency and yield of press-fitting. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a shrinking press-fitting device for an automobile steering knuckle, which, through the setting of a guide sleeve, can gradually reduce the diameter of the bushing by constraining the inner diameter of the bushing during the process of pressing the bushing down, until the bushing is reduced to a diameter smaller than the diameter of the hole to be installed, so that the bushing can be smoothly and accurately installed in the hole, thereby improving the efficiency and yield of the press-fitting.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shrinkage and press-fitting device for an automobile steering knuckle, comprising a support seat, wherein the support seat is used to support the steering knuckle; An upper pressing head, wherein the upper pressing head presses the bushing into the steering knuckle by moving up and down; And a guide sleeve, which is arranged between the upper pressure head and the lower pressure head, and the inner diameter of the guide sleeve is gradually reduced from top to bottom so that the bushing can be reduced to a diameter smaller than the inner hole of the steering knuckle mounting bushing during the process of the bushing passing through the guide sleeve from top to bottom.

[0006] The present invention is further configured as follows: a lifting plate is fixedly connected to the outside of the guide sleeve, the lifting plate can slide up and down above the support seat, an elastic member is arranged between the lifting plate and the support seat, and when the elastic member is in a normal state, the guide sleeve is located above the steering knuckle on the support seat.

[0007] The present invention is further configured as follows: two guide rods are fixedly connected to the top of the support seat, the two guide rods vertically pass through the lifting plate upward, and the lifting plate slides up and down on the two guide rods; The elastic member is configured as a spring and two of the elastic members are provided, and the two elastic members are respectively sleeved outside the two guide rods.

[0008] The present invention is further configured as follows: the upper pressing head comprises a pressing sleeve, and the pressing sleeve is used to push the bushing to move downward so as to press the bushing into the steering knuckle; And a magnet, wherein the magnet is arranged in the pressing sleeve and is used to adsorb the bushing to the bottom of the pressing sleeve.

[0009] The present invention is further configured as follows: the press sleeve is configured as a variable diameter press sleeve, and when the variable diameter press sleeve is inserted into the guide sleeve, the diameter of the variable diameter press sleeve can change together with the diameter of the bushing under the action of the inner hole of the guide sleeve.

[0010] The present invention is further configured as follows: the pressing sleeve comprises a pressing seat, and the pressing seat is provided with a cylinder with a vertical axis; And elastic petals, wherein a plurality of elastic petals are provided and fixedly connected to the bottom of the pressure seat, and the plurality of elastic petals are evenly arranged around the axis of the pressure seat.

[0011] The present invention is further configured such that: when the elastic flap is in a normal state, one end of the bottom of the elastic flap is inclined in a direction away from the axis of the pressure seat.

[0012] The present invention is further configured as follows: a vertically arranged connecting rod is fixedly connected to the bottom of the pressure seat, and the magnet is connected to the connecting rod.

[0013] The present invention is further configured as follows: the connecting rod vertically passes through the magnet and the magnet can slide vertically on the connecting rod; The connecting rod is provided with an elastic member, and the two ends of the elastic member are respectively pressed against the top of the magnet and the bottom of the pressure seat; A limiting block is fixedly connected to the bottom of the connecting rod to prevent the magnet from sliding downward from the connecting rod.

[0014] The present invention is further configured as follows: the magnet is configured as two magnets stacked together.

[0015] In summary, compared with the prior art, the present invention has the following beneficial effects: through the provision of a guide sleeve, during the process of pressing the bushing down, the diameter of the bushing can be gradually reduced by constraining the inner diameter of the bushing until the bushing is reduced to a diameter smaller than the diameter of the hole to be installed, so that the bushing can be smoothly and accurately installed in the hole, thereby improving the efficiency and yield of press-fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of an embodiment; Figure 2 is a cross-sectional view of a pressure head of an embodiment; Figure 3 is a cross-sectional view of a compression sleeve of an embodiment; Figure 4 A cross-sectional view of a support seat and a guide sleeve of an embodiment; Figure 5 for Figure 4 A magnified schematic diagram of part A.

[0017] In the figure: 1, support seat; 11, guide rod; 111, limit ring; 2, upper pressure head; 21, pressure sleeve; 211, pressure seat; 212, elastic petal; 22, magnet; 23, connecting rod; 24, limit block; 3, guide sleeve; 31, lifting plate; 4, elastic member. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0019] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0020] Embodiment: A shrinkage and pressing device for a steering knuckle of an automobile, see attached Figure 1 -Attached Figure 5 , including a support seat 1, an upper pressure head 2 and a guide sleeve 3, wherein the support seat 1 is used to support the steering knuckle; the upper pressure head 2 presses the bushing into the steering knuckle by moving up and down; the guide sleeve 3 is arranged between the upper pressure head 2 and the lower pressure head, and the inner diameter of the guide sleeve 3 gradually decreases from top to bottom so that the bushing is reduced to a diameter smaller than the inner hole of the steering knuckle mounting bushing during the process of the bushing passing through the guide sleeve 3 from top to bottom.

[0021] During press-fitting, the steering knuckle is supported on the support seat 1, and then the bushing to be installed is placed at the bottom of the upper press head 2, and then the upper press head 2 is moved downward to drive the bushing to move downward. In the process of the bushing passing through the guide sleeve 3 downward, since the inner diameter of the guide sleeve 3 gradually decreases from top to bottom, the diameter of the bushing will gradually decrease in the process of passing through the guide sleeve 3, until the diameter of the guide sleeve 3 is smaller than the diameter of the inner hole on the steering knuckle where the bushing needs to be installed, so that the bushing can be smoothly and accurately installed on the steering knuckle.

[0022] Specifically, a lifting plate 31 is fixedly connected to the outside of the guide sleeve 3, and the lifting plate 31 can slide up and down above the support seat 1. An elastic member 4 is arranged between the lifting plate 31 and the support seat 1. When the elastic member 4 is in a normal state, the guide sleeve 3 is located above the steering knuckle on the support seat 1.

[0023] When the elastic member 4 is in normal state, it can provide sufficient space between the guide sleeve 3 and the support seat 1 for the installation of the steering knuckle. During press-fitting, when the upper pressure head 2 drives the bushing to act on the guide sleeve 3, the guide sleeve 3 moves downward first until the guide sleeve 3 is pressed tightly on the top of the steering knuckle, which can prevent the steering knuckle from being displaced during the bushing press-fitting process and will not affect the upper pressure head 2 pushing the bushing through the guide sleeve 3.

[0024] Specifically, two guide rods 11 are fixedly connected to the top of the support seat 1. The two guide rods 11 vertically pass through the lifting plate 31 upward, and the lifting plate 31 slides up and down on the two guide rods 11; the elastic member 4 is set as a spring and two of the elastic members 4 are provided, and the two elastic members 4 are respectively sleeved outside the two guide rods 11. A limit ring 111 is fixedly connected to the top of the guide rod 11 to prevent the lifting plate 31 from upwardly separating from the guide rod 11.

[0025] Specifically, the upper pressing head 2 includes a pressing sleeve 21 and a magnet 22. The pressing sleeve 21 is used to push the bushing to move downward so as to press the bushing into the steering knuckle. The magnet 22 is arranged in the pressing sleeve 21, and the magnet 22 is used to adsorb the bushing to the bottom of the pressing sleeve 21. Through the arrangement of the magnet 22, when the bushing is placed at the bottom of the lower pressing head, the bushing can be adsorbed to the bottom of the upper pressing head 2 through the action of the magnet 22. When the upper pressing head 2 moves downward, the bushing will not fall off the upper pressing head 2, thereby facilitating the press-fitting operation.

[0026] Specifically, the pressing sleeve 21 is configured as a variable diameter pressing sleeve 21 , and when the variable diameter pressing sleeve 21 is inserted into the guide sleeve 3 , the diameter of the variable diameter pressing sleeve 21 can change together with the diameter of the bushing under the action of the inner hole of the guide sleeve 3 .

[0027] By setting the pressing sleeve 21 as a variable diameter pressing sleeve 21, in the process of the pressing sleeve 21 pushing the bushing through the guide sleeve 3, the diameter of the pressing sleeve 21 will also be reduced along with the bushing under the action of the inner hole of the guide sleeve 3, so that the pressing sleeve 21 can always act on the top of the bushing, providing downward pressure for the bushing, so that the bushing can be smoothly pressed into the steering knuckle.

[0028] Specifically, the pressing sleeve 21 includes a pressing seat 211 and an elastic petal 212. The pressing seat 211 is provided with a cylinder with a vertical axis. The elastic petals 212 are provided with a plurality of and fixedly connected to the bottom of the pressing seat 211. The plurality of elastic petals 212 are evenly arranged around the axis of the pressing seat 211. When the elastic petal 212 is inserted into the guide sleeve 3, the distance between the elastic petal 212 and the axis of the pressing seat 211 will be reduced due to the constraint of the inner diameter of the guide sleeve 3, thereby achieving the effect of reducing the diameter of the pressing sleeve 21.

[0029] Specifically, when the elastic flap 212 is in a normal state, one end of the bottom of the elastic flap 212 is tilted in a direction away from the axis of the pressure seat 211 .

[0030] Specifically, a vertically arranged connecting rod 23 is fixedly connected to the bottom of the pressure seat 211, and the magnet 22 is connected to the connecting rod 23. The connecting rod 23 vertically passes through the magnet 22 and the magnet 22 can slide vertically on the connecting rod 23; an elastic member 4 is also provided on the connecting rod 23, and the two ends of the elastic member 4 are respectively pressed against the top of the magnet 22 and the bottom of the pressure seat 211; a limit block 24 is fixedly connected to the bottom of the connecting rod 23 to prevent the magnet 22 from sliding down from the connecting rod 23. The magnet 22 is configured as two magnets 22 stacked together. Specifically, the elastic member 4 on the connecting rod 23 is also configured as a spring and is sleeved outside the connecting rod 23.

[0031] The bushing includes a multi-skeleton rubber bushing, which at least includes an inner skeleton, an outer skeleton and a rubber body between the two skeletons, wherein the length of the inner skeleton is greater than the length of the outer skeleton. When the bushing is installed, the inner skeleton is adsorbed on the magnet 22. When the distance between the top of the inner skeleton and the top of the outer skeleton is greater than the distance between the bottom of the magnet 22 and the bottom of the elastic petal 212, if the position of the magnet 22 is fixed, then during the downward pressing process, the force acting on the bushing will be entirely provided by the magnet 22, which will cause the magnet 22 to be easily damaged. In this embodiment, the magnet 22 is arranged to be able to move upward after the elastic part 4 is compressed, so that when the bushing is pressed against the guide sleeve 3, the elastic part 4 is compressed due to the reaction force, thereby causing the magnet 22 to move upward relative to the elastic petal 212 until the bottom of the elastic petal 212 contacts the outer skeleton of the bushing, and the bushing is pushed by the bushing to continue to move downward.

[0032] In this embodiment, the up and down movement of the upper pressure head 2 is driven by a hydraulic cylinder.

[0033] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A shrinkage and pressing device for an automobile steering knuckle, characterized in that: It comprises a support seat (1), wherein the support seat (1) is used to support the steering knuckle; An upper pressing head (2), wherein the upper pressing head (2) presses the bushing into the steering knuckle by moving up and down; and a guide sleeve (3), wherein the guide sleeve (3) is arranged between the upper pressing head (2) and the lower pressing head, and the inner diameter of the guide sleeve (3) is gradually reduced from top to bottom so that the bushing is reduced to a diameter smaller than the diameter of the inner hole of the steering knuckle mounting bushing during the process of the bushing passing through the guide sleeve (3) from top to bottom.

2. The shrinkage and press-fitting device for automobile steering knuckle according to claim 1, characterized in that: The guide sleeve (3) is fixedly connected to a lifting plate (31) on the outside. The lifting plate (31) can slide up and down above the support seat (1). An elastic member (4) is provided between the lifting plate (31) and the support seat (1). When the elastic member (4) is in a normal state, the guide sleeve (3) is located above the steering knuckle on the support seat (1).

3. The shrinkage and press-fitting device for automobile steering knuckle according to claim 2, characterized in that: The top of the support seat (1) is fixedly connected with two guide rods (11), the two guide rods (11) vertically pass through the lifting plate (31), and the lifting plate (31) slides up and down on the two guide rods (11); The elastic member (4) is configured as a spring and two elastic members (4) are provided, and the two elastic members (4) are respectively sleeved outside the two guide rods (11).

4. The shrinkage and press-fitting device for automobile steering knuckle according to claim 1, characterized in that: The upper pressing head (2) comprises a pressing sleeve (21), and the pressing sleeve (21) is used to push the bushing to move downward so as to press the bushing into the steering knuckle; and a magnet (22), wherein the magnet (22) is arranged in the pressing sleeve (21), and the magnet (22) is used to adsorb the bushing to the bottom of the pressing sleeve (21).

5. The shrinkage and press-fitting device for automobile steering knuckle according to claim 4, characterized in that: The pressing sleeve (21) is configured as a variable diameter pressing sleeve (21), and when the variable diameter pressing sleeve (21) is inserted into the guide sleeve (3), the diameter of the variable diameter pressing sleeve (21) can change together with the diameter of the bushing under the action of the inner hole of the guide sleeve (3).

6. The shrinkage and press-fitting device for automobile steering knuckle according to claim 5, characterized in that: The pressing sleeve (21) comprises a pressing seat (211), and the pressing seat (211) is provided with a cylinder with a vertical axis; and elastic petals (212), wherein a plurality of the elastic petals (212) are provided and fixedly connected to the bottom of the pressure seat (211), and the plurality of elastic petals (212) are evenly arranged around the axis of the pressure seat (211).

7. The shrinkage and press-fitting device for automobile steering knuckle according to claim 6, characterized in that: When the elastic flap (212) is in a normal state, one end of the bottom of the elastic flap (212) is inclined in a direction away from the axis of the pressure seat (211).

8. The shrinkage and press-fitting device for automobile steering knuckle according to claim 6, characterized in that: A vertically arranged connecting rod (23) is fixedly connected to the bottom of the pressure seat (211), and the magnet (22) is connected to the connecting rod (23).

9. The shrinkage and press-fitting device for automobile steering knuckle according to claim 8, characterized in that: The connecting rod (23) vertically passes through the magnet (22), and the magnet (22) can vertically slide on the connecting rod (23); The connecting rod (23) is provided with an elastic member (4), and two ends of the elastic member (4) are respectively pressed against the top of the magnet (22) and the bottom of the pressure seat (211); A limiting block (24) is fixedly connected to the bottom of the connecting rod (23) to prevent the magnet (22) from sliding downward from the connecting rod (23).

10. The shrinkage and press-fitting device for automobile steering knuckle according to claim 9, characterized in that: The magnet (22) is configured as two magnets (22) stacked together.

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