Cold heading forming device for set bolt special for passenger car steering engine

Abstract

The utility model discloses a cold heading forming device for a set bolt special for a passenger car steering engine, which relates to the technical field of automobile part manufacturing and comprises a support and further comprises a buffer assembly, a spring and a reinforcing assembly, the buffer assembly and the spring are connected with the top of the support, and the reinforcing assembly comprises a first sliding groove formed in the top of the support and a second sliding groove formed in the top of the support. A rack is arranged on the side, close to the first sliding groove, of the top of the support, a gear is arranged on the side, close to the rack, of the top of the support, a fixing shaft is connected to the gear, a rotating cylinder is connected to the top of the fixing shaft, and a protruding strip is arranged on the rotating cylinder. A supporting plate is arranged on the side, close to the rotary drum, of the top of the support, a protruding strip is also arranged on the supporting plate, by arranging the buffering assembly and the reinforcing assembly, impact force in the cold heading process is buffered and controlled, deformation of a blank in a mold is more uniform and stable, and the forming quality of a product can be improved easily.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically to a cold heading forming device for a set bolt for a passenger car steering gear. Background Technology

[0002] With the development of the automotive industry, the demand for dedicated set bolts for passenger car steering gears is increasing, requiring high precision, high strength, and good reliability. Traditional processing methods, such as machining, have low material utilization and low production efficiency, making it difficult to meet the needs of large-scale production.

[0003] The cold heading process generates significant impact forces, which are transmitted to other components of the equipment through the die holder. Excessive impact and vibration can cause fatigue damage to various parts of the cold heading machine, such as the machine body, crankshaft, and connecting rods. Under long-term impact loads, the fatigue strength of these components decreases, making them prone to cracks and fractures, thus shortening the overall service life of the equipment. Therefore, we have proposed a cold heading forming device for set bolts specifically designed for passenger car steering gears. Utility Model Content

[0004] The purpose of this invention is to provide a cold heading forming device for a set bolt for a passenger car steering gear, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cold forging device for a set bolt for a passenger car steering gear, comprising a bracket, a mold base disposed on the top of the bracket, a die disposed on the top of the mold base, and further comprising:

[0006] A buffer assembly, the buffer assembly including a spring connected to the bottom of the mold base, the spring being connected to the top of the support, and the spring having damping provided inside;

[0007] The reinforcing component includes a first groove formed on the top of the bracket, a push block slidably connected in the first groove, a connecting arm connected between the push block and the mold base, a rack provided on the top of the bracket near the first groove, a gear provided on the top of the bracket near the rack, a fixed shaft connected to the gear, a rotating cylinder connected to the top of the fixed shaft, a raised strip provided on the rotating cylinder, and a support plate provided on the top of the bracket near the rotating cylinder, the support plate also having a raised strip.

[0008] Furthermore, a spring sheet is provided inside the support plate, and a protruding strip on the support plate is connected to the spring sheet. The fixed shaft is rotatably connected to the top of the bracket, and the gear is meshed with the rack.

[0009] The above technical solution is adopted: by setting a spring sheet, the protrusions on the support plate can retract into the support plate when they collide with the protrusions on the rotating drum, thereby enhancing the buffering effect.

[0010] Furthermore, a limiting component is provided on the top of the bracket near the rack. The limiting component includes a second slide groove, in which a limiting block is slidably connected. The limiting block is connected to the rack, and a connector is provided between the rack and the first slide groove.

[0011] The above technical solution is adopted: by setting a limiting component, the rack is limited during its movement to prevent it from deviating from its original movement trajectory.

[0012] Furthermore, the support is provided with a cold forging assembly, which includes a top plate, a hydraulic cylinder is provided at the top of the top plate, a connecting plate is connected to the output end of the hydraulic cylinder, and a punch is provided at the bottom of the connecting plate.

[0013] The above technical solution involves setting up a cold heading assembly to apply pressure to the metal billet, causing it to undergo plastic deformation in the mold cavity, thereby forming the head shape of the set bolt.

[0014] Furthermore, a stabilizing component is provided on the top side of the bracket near the connecting plate. The stabilizing component includes a guide post, the hydraulic cylinder is slidably connected to the guide post, and a limiter is provided on the top of the guide post.

[0015] The above technical solution involves setting up a stabilizing component to provide stability during the descent of the punch.

[0016] Furthermore, a cooling assembly is provided on the top of the support, the cooling assembly includes a water tank, a conduit is connected to the water tank, a water pump is provided on the conduit, and a housing is provided on the top of the mold base, with the conduit connected inside the housing.

[0017] The above technical solution involves setting up a cooling component to rapidly cool and shape the mold.

[0018] Furthermore, the housing is provided with a drainage assembly, which includes a drain pipe and a solenoid valve is provided on the drain pipe.

[0019] The above technical solution involves setting up a drainage component to discharge the cooled water.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] In this invention, by setting up buffer and reinforcing components, the impact force during the cold heading process is buffered and controlled, resulting in more uniform and stable deformation of the billet within the mold. This improves the forming quality of the product and solves the problem of excessive impact force generated during cold heading, which is transmitted to other parts of the equipment through the mold base. Excessive impact force and vibration can cause fatigue damage to various components of the cold heading machine, such as the machine body, crankshaft, and connecting rod. Under long-term impact loads, the fatigue strength of these components decreases, making them prone to cracks and fractures, thus shortening the overall service life of the equipment. Attached Figure Description

[0022] Figure 1 Front view of the cold heading forming device for a set bolt for a passenger car steering gear.

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0024] Figure 3 Side view of a cold heading forming device for a set bolt for a passenger car steering gear.

[0025] Figure 4 An exploded view of the cold heading forming device for a set bolt specifically designed for passenger vehicle steering gears.

[0026] Numbering on the map:

[0027] 1. Support frame; 2. Mold base;

[0028] 3. Reinforcing component; 31. Connecting arm; 32. Push block; 33. First slide groove; 34. Rack; 35. Gear; 36. Fixed shaft; 37. Rotary drum; 38. Support plate; 39. Protruding strip;

[0029] 4. Limiting component; 41. Second slide rail; 42. Limiting block; 43. Connecting component;

[0030] 5. Buffer assembly; 51. Spring; 52. Damping;

[0031] 6. Cooling components; 61. Water tank; 62. Water pump; 63. Pipes; 64. Housing;

[0032] 7. Drainage assembly; 71. Drain pipe; 72. Solenoid valve;

[0033] 8. Cold heading assembly; 81. Top plate; 82. Hydraulic cylinder; 83. Connecting plate;

[0034] 9. Stabilizing components; 91. Guide pillars; 92. Limiting components;

[0035] 10. Punch; 11. Die. Detailed Implementation

[0036] 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.

[0037] like Figures 1-4 As shown, this utility model provides a technical solution: a cold heading forming device for a special set bolt for a passenger car steering gear, including a bracket 1, a mold base 2 disposed on the top of the bracket 1, a die 11 disposed on the top of the mold base 2, and further including:

[0038] The buffer assembly 5 includes a spring 51 connected to the bottom of the mold base 2, the spring 51 being connected to the top of the bracket 1, and a damper 52 being provided inside the spring 51.

[0039] The reinforcing component 3 includes a first slide groove 33 on the top of the bracket 1, a push block 32 slidably connected in the first slide groove 33, a connecting arm 31 connected between the push block 32 and the mold base 2, a rack 34 on the top of the bracket 1 near the first slide groove 33, a gear 35 on the top of the bracket 1 near the rack 34, a fixed shaft 36 connected to the gear 35, a rotating cylinder 37 connected to the top of the fixed shaft 36, a protruding strip 39 on the rotating cylinder 37, a support plate 38 on the top of the bracket 1 near the rotating cylinder 37, a protruding strip 39 on the support plate 38, a spring piece inside the support plate 38, and the protruding strip 39 on the support plate 38 connected to the spring piece, the fixed shaft 36 rotatably connected to the top of the bracket 1, and the gear 35 meshing with the rack 34.

[0040] A cold forging assembly 8 is provided on the support 1. The cold forging assembly 8 includes a top plate 81. A hydraulic cylinder 82 is provided on the top of the top plate 81. A connecting plate 83 is connected to the output end of the hydraulic cylinder 82. A punch 10 is provided at the bottom of the connecting plate 83.

[0041] Specifically, the metal material is first placed in the die 11. Then, the hydraulic cylinder 82 is activated to lower the connecting plate 83. The connecting plate 83 drives the punch 10 to extrude the metal material in the die 11. During the extrusion process, the spring 51 at the bottom of the die holder 2 and the internal damper 52 provide initial buffering of the impact force. Subsequently, when the die holder 2 slides down under the impact force, it will drive the push block 32 to slide in the first slide groove 33 through the connecting arm 31. The push block 32 will drive the rack 34 to move. The rack 34 drives the gear 35 to rotate. The gear 35 drives the fixed shaft 36 and the top rotating cylinder 37 to rotate. The protruding strip 39 on the rotating cylinder 37 will collide with the protruding strip 39 on the support plate 38. During the collision, the protruding strip 39 on the support plate 38 will be squeezed into the support plate 38 by the spring sheet, further enhancing the buffering effect.

[0042] Furthermore, such as Figure 1 As shown: A cooling component 6 is provided on the top of the support 1. The cooling component 6 includes a water tank 61, a conduit 63 is connected to the water tank 61, and a water pump 62 is provided on the conduit 63. A housing 64 is provided on the top of the mold base 2. The conduit 63 is connected inside the housing 64. After extrusion molding, the water pump 62 is turned on to introduce the cold water in the water tank 61 into the housing 64 through the conduit 63, so that it can contact the outer wall of the die 11 and remove heat.

[0043] The above solution also has the problem that the trajectory of rack 34 may deviate during its movement, such as... Figure 2 As shown: A limiting component 4 is provided on the top side of the bracket 1 near the rack 34. The limiting component 4 includes a second slide groove 41. A limiting block 42 is slidably connected in the second slide groove 41. The limiting block 42 is connected to the rack 34. A connecting piece 43 is connected between the rack 34 and the first slide groove 33. During the movement of the rack 34, the limiting block 42 will be driven to slide in the second slide groove 41 in sync, thereby limiting the movement trajectory of the rack 34.

[0044] The above solution also has the problem that the punch 10 may wobble during the stamping process, such as... Figure 2 As shown: A stabilizing component 9 is provided on the top side of the bracket 1 near the connecting plate 83. The stabilizing component 9 includes a guide post 91, a hydraulic cylinder 82 is slidably connected to the guide post 91, a limiting member 92 is provided on the top of the guide post 91, and the connecting plate 83 slides on the guide post 91 to limit the position of the punch 10.

[0045] Furthermore, such as Figure 2 As shown: A drainage assembly 7 is provided on the outer casing 64. The drainage assembly 7 includes a drain pipe 71 and a solenoid valve 72 is provided on the drain pipe 71. After cooling is completed, the solenoid valve 72 is opened to discharge water with heat from the drain pipe 71.

[0046] like Figures 1-4As shown: First, the metal material is placed in the die cavity 11. Then, the hydraulic cylinder 82 is activated to lower the connecting plate 83. The connecting plate 83 drives the punch 10 to extrude the metal material in the die cavity 11. During the extrusion process, the spring 51 at the bottom of the die base 2 and the internal damper 52 provide initial buffering against the impact force. Subsequently, when the die base 2 slides down under the impact force, it will drive the push block 32 to slide in the first slide groove 33 through the connecting arm 31. The push block 32 will drive the rack 34 to move. During the movement of the rack 34, it will simultaneously drive the limit block 42 to slide in the second slide groove 41, thereby controlling the rack 34. The movement trajectory of 4 is limited. The rack 34 drives the gear 35 to rotate. The gear 35 drives the fixed shaft 36 and the top rotating cylinder 37 to rotate. The protruding strip 39 on the rotating cylinder 37 will collide with the protruding strip 39 on the support plate 38. During the collision, the protruding strip 39 on the support plate 38 will be squeezed into the support plate 38 by the spring sheet, further enhancing the buffering effect. After extrusion molding, the water pump 62 is turned on to introduce the cold water in the water tank 61 into the outer shell 64 through the conduit 63, which contacts the outer wall of the die 11 to remove heat. Finally, after cooling, the solenoid valve 72 is turned on to discharge the hot water from the drain pipe 71.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A cold heading forming device for a passenger car steering machine special locking bolt, comprising a support (1), a die holder (2) arranged at the top of the support (1), and a concave die (11) arranged at the top of the die holder (2), characterized in that, Also includes: The buffer assembly (5) includes a spring (51) connected to the bottom of the mold base (2), the spring (51) being connected to the top of the bracket (1), and a damper (52) being provided inside the spring (51). The reinforcing component (3) includes a first groove (33) opened on the top of the bracket (1), a push block (32) is slidably connected in the first groove (33), a connecting arm (31) is connected between the push block (32) and the mold base (2), a rack (34) is provided on the side of the top of the bracket (1) near the first groove (33), a gear (35) is provided on the side of the top of the bracket (1) near the rack (34), a fixed shaft (36) is connected on the gear (35), a rotating cylinder (37) is connected to the top of the fixed shaft (36), a protruding strip (39) is provided on the rotating cylinder (37), and a support plate (38) is provided on the side of the top of the bracket (1) near the rotating cylinder (37), and a protruding strip (39) is also provided on the support plate (38).

2. The cold heading forming device for the special stud bolt of the passenger car steering machine according to claim 1, characterized in that: The support plate (38) is provided with a spring piece, and the protruding strip (39) provided on the support plate (38) is connected to the spring piece. The fixed shaft (36) is rotatably connected to the top of the bracket (1), and the gear (35) is meshed with the rack (34).

3. The cold heading forming device for the set bolt of the steering gear for passenger vehicles according to claim 1, characterized in that: A limiting component (4) is provided on the top side of the bracket (1) near the rack (34). The limiting component (4) includes a second slide groove (41). A limiting block (42) is slidably connected in the second slide groove (41). The limiting block (42) is connected to the rack (34). A connector (43) is connected between the rack (34) and the first slide groove (33).

4. The cold heading device for a passenger car steering special stud bolt according to claim 1, characterized in that: The support (1) is provided with a cold forging assembly (8), the cold forging assembly (8) includes a top plate (81), a hydraulic cylinder (82) is provided on the top of the top plate (81), the output end of the hydraulic cylinder (82) is connected to a connecting plate (83), and a punch (10) is provided at the bottom of the connecting plate (83).

5. The cold heading device for a passenger car steering machine special stud bolt according to claim 4, characterized in that: A stabilizing component (9) is provided on the top side of the bracket (1) near the connecting plate (83). The stabilizing component (9) includes a guide post (91). The hydraulic cylinder (82) is slidably connected to the guide post (91). A limiter (92) is provided on the top of the guide post (91).

6. The cold heading device for a passenger car steering special stud bolt according to claim 1, characterized in that: The support (1) is provided with a cooling component (6) on top. The cooling component (6) includes a water tank (61), a conduit (63) is connected to the water tank (61), a water pump (62) is provided on the conduit (63), and a shell (64) is provided on top of the mold base (2). The conduit (63) is connected inside the shell (64).

7. The cold heading device for a passenger car steering machine special stud bolt according to claim 6, characterized in that: The outer casing (64) is provided with a drainage assembly (7), which includes a drain pipe (71) and a solenoid valve (72) is provided on the drain pipe (71).

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