An automatic press-fitting device for bushings of automobile steering knuckles

Abstract

The utility model discloses a kind of bushing automatic press fitting device for automobile steering knuckle, applied in bushing automatic press fitting device technical field, its technical scheme main point is: including pedestal and the press fitting seat fixedly connected on the pedestal;Positioning push-off component for positioning and fixing steering knuckle and automatically pushing out steering knuckle after bushing press fitting is fixedly connected on the pedestal, hydraulic push rod for pressing bushing into steering knuckle is fixedly connected on the press fitting seat, the telescopic shaft of the hydraulic push rod is respectively fixedly connected with bushing elastic clamping seat for installing bushing and guiding detection component for guaranteeing bushing movement accuracy;With technical effect is: press fitting precision is high, and labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic bushing pressing devices, and in particular to an automatic bushing pressing device for automotive steering knuckles. Background Technology

[0002] In the assembly process of the automotive front axle steering knuckle assembly, bushings need to be press-fitted onto the steering knuckle. Currently, the installation of bushings in automotive front axle steering knuckle assemblies is generally carried out by mechanical press-fitting. After the automotive steering knuckle is fixed on a fixture, a hydraulic cylinder extends to press the bushing into the bushing hole of the steering knuckle. However, the existing technology cannot guarantee the concentricity of the bushing movement and the extension length of the hydraulic cylinder, thus affecting the accuracy of bushing press-fitting. Furthermore, after press-fitting, the steering knuckle needs to be manually pushed out of the fixture, which increases the labor intensity and necessitates improvement. Utility Model Content

[0003] The purpose of this invention is to provide an automatic press-fitting device for bushings of automotive steering knuckles, which has the advantages of high press-fitting accuracy and reduced labor intensity.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an automatic bushing pressing device for automotive steering knuckles, comprising a base and a pressing seat fixedly connected to the base; a positioning and pushing assembly for positioning and fixing the steering knuckle and automatically pushing out the steering knuckle after the bushing pressing is completed is fixedly connected to the base; a hydraulic push rod for pressing the bushing into the steering knuckle is fixedly connected to the pressing seat; and a bushing elastic snap-fit ​​seat for installing the bushing and a guide detection assembly for ensuring the movement accuracy of the bushing are fixedly connected to the telescopic shaft of the hydraulic push rod.

[0005] The present invention is further configured such that: the positioning and pushing assembly includes a positioning abutment seat fixedly connected to the base for abutting the end of the steering knuckle away from the hydraulic push rod, and a rotary pressing cylinder fixedly connected to the positioning abutment seat; the telescopic end of the rotary pressing cylinder is fixedly connected to a pressing block for abutting the end of the steering knuckle near the hydraulic push rod; an arc-shaped pressing part is fixedly connected to the pressing block; and a positioning push rod for pushing out the steering knuckle after pressing is slidably connected to the positioning abutment seat based on a return spring.

[0006] The present invention is further configured such that: the guiding detection component includes a mounting sleeve coaxially fixedly connected to the telescopic shaft of the hydraulic push rod, and a first mounting plate and a second mounting plate respectively sleeved and fixedly connected to the mounting sleeve and arranged in a V-shape; a guide slide rod is fixedly connected to the first mounting plate; a guide slide sleeve cooperating with the guide slide rod is fixedly connected to the pressing seat; an inductive linear displacement sensor is also fixedly connected to the pressing seat; and the sliding pull rod of the inductive linear displacement sensor is connected to the second mounting plate.

[0007] The present invention is further configured such that: a detection block is fixedly connected to the guide slide rod, a detection seat is fixedly connected to the press-fit seat, and a plurality of position sensing sensors coupled to the hydraulic push rod are fixedly connected to the detection seat.

[0008] The present invention is further configured such that a pressure sensor for detecting hydraulic thrust is fixedly connected between the mounting sleeve and the bushing elastic snap-fit ​​seat.

[0009] The present invention is further configured such that: a first laser sensor for detecting the bushing and a second laser sensor for detecting the steering knuckle are respectively fixedly connected to the base.

[0010] In summary, this utility model has the following beneficial effects: 1. The positioning and pushing assembly uses a rotary pressing cylinder to drive the arc-shaped pressing part of the pressing block to press against the steering knuckle from the side near the hydraulic push rod. The positioning abutment seat supports and positions the steering knuckle from the other side, thus fixing it in place. After pressing, the return spring in the positioning abutment seat automatically pushes the positioning push rod to push the steering knuckle out of the fixture, eliminating the need for manual operation and reducing labor intensity. At the same time, the guide detection assembly uses the mounting sleeve on the telescopic shaft of the hydraulic push rod to fix the guide slide rod through the first mounting plate. This guide slide rod cooperates with the guide slide sleeve on the pressing seat to provide rigid guidance for bushing pressing, ensuring the concentricity of the movement when the hydraulic push rod pushes the bushing. The assembly also uses an inductive linear displacement sensor connected to the second mounting plate through a sliding rod to monitor the displacement accuracy of the hydraulic push rod in real time, ensuring accurate pressing depth. The detection block on the guide slide rod is coupled with the position sensing sensor on the detection seat, which can accurately feedback the real-time position status of the bushing pressing. This, combined with the pressure sensor between the mounting sleeve and the bushing elastic snap-fit ​​seat, detects the hydraulic thrust, forming a dual closed-loop control of pressing force and displacement to ensure the accuracy of bushing pressing. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 yes Figure 1 Enlarged schematic diagram of part A; Figure 3This is a structural cross-sectional view of the positioning and pushing component in this embodiment.

[0012] Reference numerals: 1. Base; 2. Press-fit seat; 3. Positioning and pushing assembly; 31. Positioning abutment seat; 32. Rotary clamping cylinder; 33. Clamping block; 34. Arc-shaped clamping part; 35. Return spring; 36. Positioning push rod; 4. Hydraulic push rod; 5. Bushing elastic snap-fit ​​seat; 6. Guide detection assembly; 61. Mounting sleeve; 62. First mounting plate; 63. Second mounting plate; 64. Guide slide rod; 65. Inductive linear displacement sensor; 66. Guide slide sleeve; 67. Detection block; 68. Detection seat; 69. Position sensing sensor; 7. Pressure sensor; 8. First laser sensor; 9. Second laser sensor. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings.

[0014] Example: refer to Figures 1 to 3 An automatic bushing pressing device for automotive steering knuckles includes a base 1 and a pressing seat 2 fixedly connected to the base 1. A positioning and pushing assembly 3 is fixedly connected to the base 1 for positioning and fixing the steering knuckle and automatically pushing it out after bushing pressing. A hydraulic push rod 4 for pressing the bushing into the steering knuckle is fixedly connected to the pressing seat 2. A bushing elastic locking seat 5 for installing the bushing and a guide detection assembly 6 for ensuring the accuracy of bushing movement are fixedly connected to the telescopic shaft of the hydraulic push rod 4. A pressure sensor 7 for detecting hydraulic thrust is fixedly connected between the mounting sleeve 61 and the bushing elastic locking seat 5. A first laser sensor 8 for detecting the bushing and a second laser sensor 9 for detecting the steering knuckle are fixedly connected to the base 1. The first laser sensor 8 and the second laser sensor 9 are used to detect whether the bushing and the steering wheel are in place, respectively, to avoid damage to the equipment.

[0015] refer to Figure 1 and Figure 2Specifically, the positioning and pushing assembly 3 includes a positioning abutment seat 31 fixedly connected to the base 1 for abutting the end of the steering knuckle away from the hydraulic push rod 4, and a rotary clamping cylinder 32 fixedly connected to the positioning abutment seat 31. A clamping block 33 for abutting the end of the steering knuckle near the hydraulic push rod 4 is fixedly connected to the telescopic end of the rotary clamping cylinder 32. An arc-shaped clamping part 34 is fixedly connected to the clamping block 33. A positioning push rod 36 for pushing the steering knuckle out after pressing is slidably connected within the positioning abutment seat 31 based on a return spring 35. During installation, the bushing hole is first made to mate with the positioning push rod 36, thereby making... The steering knuckle end face is fitted with the positioning abutment seat 31 to achieve initial positioning of the steering knuckle. Then, the rotating clamping cylinder 32 drives the clamping block 33 to retract so that the clamping block 33 and the arc-shaped clamping part 34 abut against and fit against the other end of the steering knuckle, thereby achieving the positioning and fixing of the steering knuckle. When the bushing is pressed into the bushing hole, the bushing abuts against the positioning push rod 36, thereby causing the positioning push rod 36 to retract into the positioning abutment seat 31, and the return spring 35 is compressed. After the pressing is completed, the return spring 35 in the positioning abutment seat 31 automatically pushes the positioning push rod 36 to push the steering knuckle out of the fixture. No manual operation is required, reducing labor intensity.

[0016] refer to Figure 1 Specifically, the guide detection component 6 includes a mounting sleeve 61 coaxially fixed to the telescopic shaft of the hydraulic push rod 4, and a first mounting plate 62 and a second mounting plate 63 respectively sleeved and fixedly connected to the mounting sleeve 61 in a V-shape. A guide slide rod 64 is fixedly connected to the first mounting plate 62, and a guide sleeve 66 that cooperates with the guide slide rod 64 is fixedly connected to the pressing base 2. An inductive linear displacement sensor 65 is also fixedly connected to the pressing base 2. The sliding rod of the inductive linear displacement sensor 65 is connected to the second mounting plate 63. The guide detection component 6, through the mounting sleeve 61 on the telescopic shaft of the hydraulic push rod 4, fixes the guide slide rod 64 through the first mounting plate 62, and cooperates with the guide sleeve 66 on the pressing base 2 to provide rigid guidance for bushing pressing, ensuring the concentricity of the movement when the hydraulic push rod 4 pushes the bushing. The inductive linear displacement sensor 65 is connected to the second mounting plate 63 through the sliding rod to monitor the displacement accuracy of the hydraulic push rod 4 in real time, ensuring accurate pressing depth. A detection block 67 is fixedly connected to the guide slide rod 64, and a detection seat 68 is fixedly connected to the pressing seat 2. Several position sensing sensors 69 coupled to the hydraulic push rod 4 are fixedly connected to the detection seat 68. The detection block 67 on the guide slide rod 64 and the position sensing sensors 69 on the detection seat 68 are coupled to accurately reflect the real-time position status of the bushing pressing. Together with the pressure sensor 7 between the mounting sleeve 61 and the bushing elastic snap seat 5, the hydraulic thrust is detected, forming a dual closed-loop control of pressing force and displacement to ensure the accuracy of bushing pressing.

[0017] Brief description of the usage process: The positioning and pushing assembly 3 drives the arc-shaped pressing part 34 of the pressing block 33 to press against the steering knuckle from the side near the hydraulic push rod 4 through the rotary pressing cylinder 32. The positioning abutment seat 31 supports and positions from the other side, thereby realizing the positioning and fixing of the positioning knuckle. After the pressing is completed, the return spring 35 in the positioning abutment seat 31 automatically pushes the positioning push rod 36 to push the steering knuckle out of the fixture. No manual operation is required, reducing labor intensity.

[0018] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that make creative contributions as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An automatic press-fitting device for bushings of automotive steering knuckles, comprising a base (1) and a press-fitting seat (2) fixedly connected to the base (1); characterized in that, The base (1) is fixedly connected to a positioning and pushing assembly (3) for positioning and fixing the steering knuckle and automatically pushing the steering knuckle out after the bushing is pressed. The pressing base (2) is fixedly connected to a hydraulic push rod (4) for pressing the bushing into the steering knuckle. The telescopic shaft of the hydraulic push rod (4) is fixedly connected to a bushing elastic snap-fit ​​seat (5) for installing the bushing and a guide detection assembly (6) for ensuring the movement accuracy of the bushing.

2. The automatic bushing pressing device for automotive steering knuckles according to claim 1, characterized in that, The positioning and pushing assembly (3) includes a positioning abutment seat (31) fixedly connected to the base (1) for abutting the end of the steering knuckle away from the hydraulic push rod (4) and a rotary pressing cylinder (32) fixedly connected to the positioning abutment seat (31). The telescopic end of the rotary pressing cylinder (32) is fixedly connected to a pressing block (33) for abutting the end of the steering knuckle near the hydraulic push rod (4). An arc-shaped pressing part (34) is fixedly connected to the pressing block (33). The positioning abutment seat (31) is slidably connected to a positioning push rod (36) for pushing out the steering knuckle after pressing, based on a return spring (35).

3. The automatic bushing pressing device for automotive steering knuckles according to claim 1, characterized in that, The guide detection assembly (6) includes a mounting sleeve (61) coaxially fixedly connected to the telescopic shaft of the hydraulic push rod (4), and a first mounting plate (62) and a second mounting plate (63) respectively sleeved and fixedly connected to the mounting sleeve (61) and arranged in a V shape. A guide slide rod (64) is fixedly connected to the first mounting plate (62), and a guide slide sleeve (66) that cooperates with the guide slide rod (64) is fixedly connected to the press-fit seat (2). An inductive linear displacement sensor (65) is also fixedly connected to the press-fit seat (2), and the sliding pull rod of the inductive linear displacement sensor (65) is connected to the second mounting plate (63).

4. The automatic bushing pressing device for automotive steering knuckles according to claim 3, characterized in that, A detection block (67) is fixedly connected to the guide slide (64), a detection seat (68) is fixedly connected to the press base (2), and a plurality of position sensing sensors (69) coupled to the hydraulic push rod (4) are fixedly connected to the detection seat (68).

5. An automatic bushing pressing device for automotive steering knuckles according to claim 3, characterized in that, A pressure sensor (7) for detecting hydraulic thrust is fixedly connected between the mounting sleeve (61) and the bushing elastic snap-fit ​​seat (5).

6. The automatic bushing pressing device for automotive steering knuckles according to claim 1, characterized in that, The base (1) is fixedly connected to a first laser sensor (8) for detecting the bushing and a second laser sensor (9) for detecting the steering knuckle.

Images