A kind of automobile steering gear screw plug peripheral shell press riveting device

Abstract

This invention discloses a riveting device for the outer shell of a car steering gear plug, comprising a frame, a servo press mounted on the top of the frame, a rivet seat fixedly mounted on a worktable at the bottom of the frame, a rivet needle mounted on the top of the rivet seat, a positioning mechanism mounted above the worktable, the top of the rivet seat passing through the positioning mechanism and slidably connected to the positioning mechanism, the rivet needle being located directly below the outer shell of the plug, and a pressure head mounted on the side of the steering gear opposite to the plug, located directly below the servo press, contacting the reinforcing ribs on the surface of the steering gear, with a clearance space provided at the thin-walled area of ​​the steering gear. During operation, the riveting head of the servo press descends, contacts the pressure head, and applies pressure, which is transmitted to the reinforcing ribs of the steering gear, causing the steering gear and the positioning mechanism to move downwards together, thus deforming the outer shell of the plug by riveting. The clearance space at the bottom of the pressure head at the thin-walled area of ​​the steering gear effectively avoids the weak areas of the steering gear shell, preventing deformation of the thin-walled area of ​​the steering gear under stress.

Description

Technical Field

[0001] This invention relates to the field of automotive steering gear press-fit technology, and in particular to a press-fit device for the outer shell of an automotive steering gear plug. Background Technology

[0002] The steering gear is a wheel-shaped device that controls the direction of travel. Its function is to convert the force applied by the driver to the edge of the steering wheel into torque and then transmit it to the steering shaft. The gear system introduced between the driver and the wheels is flexible and can control the direction of the car very well.

[0003] After the steering gear is assembled, the housing surrounding the screw plug is deformed by press riveting to better fix the screw plug to the steering gear. However, when the existing press riveting machine presses the housing surrounding the screw plug, the press riveting head applies pressure to other thin-walled areas of the steering gear, causing surface deformation of the thin-walled areas and affecting product quality. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a riveting device for the outer shell of an automotive steering gear plug, which can solve the problem of deformation of other contact surfaces caused by riveting the outer shell of the plug in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a riveting device for the outer shell of a car steering gear plug, comprising a frame, a servo press mounted on the top of the frame, a rivet seat fixedly mounted on a worktable at the bottom of the frame, a rivet needle mounted on the top of the rivet seat for riveting the shell covering the plug, a positioning mechanism for positioning the steering gear mounted above the worktable, the top of the rivet seat passing through the positioning mechanism and slidably connected to the positioning mechanism, the rivet needle being located directly below the outer shell of the plug, a pressure head mounted on the side of the steering gear away from the plug, the pressure head being located directly below the servo press, the pressure head contacting the reinforcing ribs on the surface of the steering gear, and a clearance space provided at the thin-walled area of ​​the steering gear. During operation, the riveting head of the servo press moves downward to contact the top of the pressure head and moves downward with the steering gear and the positioning mechanism to rivet and deform the outer shell of the plug. When not in operation, the plug and the rivet needle are separated.

[0006] As a further improvement to the above technical solution:

[0007] An mounting plate is installed above the workbench, and a guide post is installed between the mounting plate and the workbench. The top of the guide post is fixedly connected to the mounting plate, and the lower end of the guide post passes through the workbench and is slidably connected to the workbench. A spring is connected between the lower end of the guide post and the workbench.

[0008] The positioning mechanism is detachably connected to the mounting plate via bolts.

[0009] The positioning mechanism includes a base plate and a positioning seat. The base plate is detachably connected to the upper surface of the mounting plate by bolts. The positioning seat is fixedly installed on the upper surface of the base plate. The top of the positioning seat is provided with a placement slot for placing the steering gear.

[0010] A handle is provided on the base plate.

[0011] The top surface of the pressure head is an arc-shaped spherical surface.

[0012] The top of the rivet seat is provided with a guide rod that matches the hole at the bottom of the screw plug.

[0013] The base plate is also equipped with a support component for assisting the steering gear in positioning.

[0014] The support assembly includes a screw, the top of which is threaded with a nut.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention has a simple structure and is easy to use. The steering gear is placed on the positioning mechanism, so that the rivet is located directly below the outer shell of the screw plug. During operation, the servo press's riveting head moves downward, contacts the pressure head, and applies pressure to it. The pressure is transmitted to the reinforcing rib of the steering gear, causing the steering gear and the positioning mechanism to move downward together. The outer shell of the screw plug contacts the rivet, and the steering gear and the positioning mechanism continue to move downward. The rivet deforms the outer shell of the screw plug by riveting. The bottom of the pressure head is provided with a clearance in the thin-walled area of ​​the steering gear, which effectively avoids the weak area of ​​the steering gear shell and prevents the thin-walled area of ​​the steering gear from being stressed, which would cause the surface of the thin-walled area to deform and affect the product quality.

[0017] 2. The top of the pressure head of the present invention is an arc-shaped spherical surface, which transmits pressure through the spherical surface, making the pressure distribution more uniform and improving the stability of the product. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of one angle of the present invention;

[0019] Figure 2 This is a schematic diagram of the invention from another angle;

[0020] Figure 3 This is a schematic diagram of the interior of the workbench;

[0021] Figure 4 This is a schematic diagram of the positioning mechanism;

[0022] In the diagram: 1. Frame; 2. Servo press; 3. Worktable; 4. Rivet pin holder; 5. Rivet pin; 6. Steering mechanism; 7. Positioning mechanism; 71. Base plate; 72. Positioning seat; 8. Plug; 9. Press head; 10. Mounting plate; 11. Guide column; 12. Spring; 13. Handle; 14. Guide rod; 15. Support assembly; 151. Screw; 152. Nut. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0024] like Figures 1 to 4 As shown, the automotive steering gear plug outer shell riveting device of this embodiment includes a frame 1, a servo press 2 mounted on the top of the frame 1, a rivet seat 4 fixed on the worktable 3 at the bottom of the frame 1, a rivet needle 5 mounted on the top of the rivet needle seat 4 for riveting the shell covering the plug 8, a positioning mechanism 7 for positioning the steering gear 6 mounted above the worktable 3, the top of the rivet needle seat 4 passing through the positioning mechanism 7 and slidably connected to the positioning mechanism 7, the rivet needle 5 being located directly below the outer shell of the plug 8, a pressure head 9 mounted on the side of the steering gear 6 away from the plug 8, the pressure head 9 being located directly below the servo press 2, the pressure head 9 contacting the reinforcing ribs on the surface of the steering gear 6, and the pressure head 9 having a clearance gap in the thin-walled area of ​​the steering gear 6. During operation, the riveting head of the servo press 2 moves downward to contact the top of the pressure head 9 and moves the steering gear 6 and the positioning mechanism 7 downward to deform the outer shell of the plug 8 by riveting with the rivet needle 5. When not in operation, the plug 8 and the rivet needle 5 are separated from each other.

[0025] Specifically, the output end of the servo press 2 is located directly above the press head 9, the rivet 5 is located directly below the outer shell of the screw plug 8, the steering mechanism 6 is placed on the positioning mechanism 7, the press head 9 contacts the reinforcing ribs on the surface of the steering mechanism 6, and the press head 9 has a clearance gap in the thin-walled area of ​​the steering mechanism 6. The output end of the servo press 2 moves down to contact the press head 9 and applies downward pressure to the press head 9. The press head 9 moves down together with the steering mechanism 6 and the positioning mechanism 7. The shell covering the outer shell of the screw plug 8 contacts the rivet 5. When the output end of the servo press 2 moves down to the predetermined displacement and pressure, it is held for 1 second. At this time, the outer shell of the screw plug 8 is deformed by the pressure, fixing the screw plug 8 to the steering mechanism 6. Then the output end of the servo press 2 rises rapidly, and the outer shell of the screw plug 8 separates from the rivet 5.

[0026] Furthermore, an installation plate 10 is installed above the workbench 3, and a guide post 11 is installed between the installation plate 10 and the workbench 3. The top of the guide post 11 is fixedly connected to the installation plate 10, and the lower end of the guide post 11 passes through the workbench 3 and is slidably connected to the workbench 3. A spring 12 is connected between the lower end of the guide post 11 and the workbench 3.

[0027] Specifically, when the steering gear 6 and the positioning mechanism 7 move down, they bring the mounting plate 10 and the guide column 11 down to compress the spring 12. When the output end of the servo press 2 rises, the spring 12 quickly resets, and the outer housing of the screw plug 8 separates from the rivet 5.

[0028] Furthermore, the positioning mechanism 7 is detachably connected to the mounting plate 10 by bolts.

[0029] Furthermore, the positioning mechanism 7 includes a base plate 71 and a positioning seat 72. The base plate 71 is detachably connected to the upper surface of the mounting plate 10 by bolts, and the positioning seat 72 is fixedly installed on the upper surface of the base plate 71. The top of the positioning seat 72 is provided with a placement groove for placing the steering gear 6.

[0030] Furthermore, a handle 13 is provided on the base plate 71.

[0031] Furthermore, the top surface of the pressure head 9 is an arc-shaped spherical surface, which transmits pressure through the spherical surface, making the pressure distribution more uniform and improving the stability of the product.

[0032] Furthermore, the top of the rivet seat 4 is provided with a guide rod 14 that matches the hole at the bottom of the screw plug 8.

[0033] Furthermore, the base plate 71 is also provided with a support component 15 for assisting the steering mechanism 6 in positioning.

[0034] Furthermore, the support assembly 15 includes a screw 151, with a nut 152 threadedly connected to the top of the screw 151. By rotating the nut 152, the height can be adjusted to contact the surface of the steering gear 6, thereby assisting in supporting and positioning the steering gear 6.

[0035] Specific working principle: Fix the positioning mechanism 7 to the mounting plate 10 with a screw with a handle, then place the steering gear 6 on the positioning mechanism 7 according to the limit position, with the screw plug 8 of the steering gear 6 vertically aligned with the rivet seat 4, and the rivet 5 located directly below the outer shell of the screw plug 8. After the steering gear 6 is placed stably, place the pressure head 9 on the steering gear 6 (note the placement direction, otherwise the pressure head 9 will not be stable). After placement, the pressure head 9 and the steering gear 6 should fit well and be stable, ensuring that the pressure head 9 is vertical. Press the start switch to start riveting.

[0036] The servo press 2 lowers its riveting head. After the riveting head contacts the press head 9, it drives the press head 9, steering mechanism 6, positioning mechanism 7, mounting plate 10, and guide column 11 to move down together. The guide column 11 compresses the spring 12, while the rivet seat 4 remains fixed. After the outer shell of the screw plug 8 contacts the rivet 5, the servo press 2 slows down, increases the pressure, and continues to press down, so that the rivet 5 is riveted into the bottom surface of the outer shell of the screw plug 8, forming a rivet point.

[0037] After the servo press 2 reaches the predetermined displacement and pressure, it holds for 1 second, and then the servo press 2 rises and disengages from the press head 9. During the rising process, the spring 12 resets, and the guide column 11 moves upward under the action of the spring 12, causing the press head 9, steering gear 6, positioning mechanism 7, mounting plate 10 and guide column 11 to move upward together. The outer housing of the screw plug 8 disengages from the rivet pin 5, completing the riveting process. The press head 9 is removed, and the steering gear 6 is removed.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A riveting device for the outer housing of a car steering gear plug, characterized in that, The system includes a frame (1), a servo press (2) mounted on the top of the frame (1), a rivet seat (4) fixed on the worktable (3) at the bottom of the frame (1), a rivet needle (5) mounted on the top of the rivet needle seat (4) for riveting the housing covering the outer shell of the screw plug (8), a positioning mechanism (7) for positioning the steering gear (6) mounted above the worktable (3), the top of the rivet needle seat (4) passing through the positioning mechanism (7) and slidably connected to the positioning mechanism (7), the rivet needle (5) being located directly below the outer shell of the screw plug (8), and the steering gear... (6) A pressure head (9) is installed on the side away from the screw plug (8). The pressure head (9) is located directly below the servo press (2). The pressure head (9) is in contact with the reinforcing rib on the surface of the steering gear (6). The pressure head (9) is provided with a clearance in the thin-walled area of ​​the steering gear (6). When working, the riveting head of the servo press (2) moves downward to contact the top of the pressure head (9) and moves the steering gear (6) and positioning mechanism (7) downward so that the rivet (5) can rivet and deform the outer shell of the screw plug (8). When not working, the outer shell of the screw plug (8) is separated from the rivet (5).

2. The automotive steering gear plug outer housing pressing and riveting device according to claim 1, characterized in that, An mounting plate (10) is installed above the workbench (3). A guide post (11) is installed between the mounting plate (10) and the workbench (3). The top of the guide post (11) is fixedly connected to the mounting plate (10). The lower end of the guide post (11) passes through the workbench (3) and is slidably connected to the workbench (3) up and down. A spring (12) is connected between the lower end of the guide post (11) and the workbench (3).

3. The automotive steering gear plug outer housing pressing and riveting device according to claim 2, characterized in that, The positioning mechanism (7) is detachably connected to the mounting plate (10) by bolts.

4. The automotive steering gear plug outer housing pressing and riveting device according to claim 3, characterized in that, The positioning mechanism (7) includes a base plate (71) and a positioning seat (72). The base plate (71) is detachably connected to the upper surface of the mounting plate (10) by bolts. The positioning seat (72) is fixedly installed on the upper surface of the base plate (71). The top of the positioning seat (72) is provided with a placement slot for placing the steering gear (6).

5. The automotive steering gear plug outer housing pressing and riveting device according to claim 4, characterized in that, A handle (13) is provided on the base plate (71).

6. The automotive steering gear plug outer housing pressing and riveting device according to claim 5, characterized in that, The top surface of the pressure head (9) is an arc-shaped spherical surface.

7. The automotive steering gear plug outer housing pressing and riveting device according to claim 6, characterized in that, The top of the rivet seat (4) is provided with a guide rod (14) that matches the hole at the bottom of the screw plug (8).

8. The automotive steering gear plug outer housing pressing and riveting device according to any one of claims 4-7, characterized in that, The base plate (71) is also provided with a support component (15) for assisting the steering gear (6) in positioning.

9. The automotive steering gear plug outer housing pressing and riveting device according to claim 8, characterized in that, The support assembly (15) includes a screw (151) with a nut (152) threaded to the top of the screw (151).

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