A bearing locking structure extrusion forming device

Abstract

The utility model relates to the technical field of automobile parts production, disclose a bearing locking structure extrusion forming device, including hydraulic machine, the workbench of hydraulic machine is fixed with workpiece positioning mechanism, the lifting pressure head below of hydraulic machine is equipped with extrusion forming head, the extrusion forming head includes the positioning mandrel and the gear ring of integrated molding, and the gear ring is formed with several circumference distributed protruding teeth. The step surface of the workpiece part close to the bearing is extruded through the extrusion forming head, and the locking structure is formed at the bearing end portion, not only can increase the stability of bearing installation, and can save the processing of baffle ring groove and the installation work of baffle ring, optimizes the production technology of pipe column assembly, improves production efficiency simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to an extrusion molding device for a bearing locking structure. Background Technology

[0002] The column assembly is a crucial component of the steering system. It comprises the column itself and the bearings housed within it. To prevent bearings from detaching after installation, a retaining ring is typically installed on the outside of the bearing. If a retaining ring is required, a groove for it must be machined into the corresponding location on the column during machining. The retaining ring then needs to be manually installed into this groove, making the installation process complex and impacting the production efficiency of the column assembly. Utility Model Content

[0003] The purpose of this invention is to provide a bearing locking structure extrusion molding device. By extruding the stepped surface of the workpiece near the bearing through the extrusion molding head, a locking structure is formed at the bearing end. This not only increases the stability of bearing installation, but also eliminates the need for machining the retaining ring groove and installing the retaining ring, thus optimizing the production process of the tubular assembly and improving production efficiency.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] An extrusion molding device for a bearing locking structure includes a hydraulic press. A workpiece positioning mechanism is fixed on the worktable of the hydraulic press, and an extrusion molding head is provided below the lifting head of the hydraulic press. The extrusion molding head includes an integrally formed positioning mandrel and a toothed ring, with several circumferentially distributed protruding teeth formed on the toothed ring. During press-fitting, the workpiece with the bearing already installed is first installed on the workpiece positioning mechanism; then, the extrusion molding head is inserted into the stepped hole of the workpiece located above the bearing, and the positioning mandrel is inserted into the inner ring of the bearing, thereby centering the extrusion molding head. At this time, the protruding teeth abut against the stepped surface adjacent to the bearing; then, the lifting head of the hydraulic press moves down, causing the extrusion molding head to move down, and the protruding teeth insert into the stepped surface, squeezing the "flesh" of the workpiece in the stepped surface towards the bearing. The squeezed part forms a locking structure at the upper edge of the outer ring of the bearing. Through the locking structure, the bearing is tightly fixed to the workpiece, and the structure is stable. At the same time, it can eliminate the machining of the retaining ring groove and the installation of the retaining ring, optimize the production process, and improve production efficiency.

[0006] The present invention is further configured such that a gripping groove is formed on the upper outer wall of the extrusion molding head. The gripping groove can facilitate the operator to pick up the extrusion molding head and prevent it from slipping. On the other hand, it can reduce the weight of the extrusion molding head.

[0007] The present invention is further configured such that: the extrusion molding head has an internal cavity, which can further reduce the weight of the extrusion molding head.

[0008] This invention is further configured such that a height-fixing ring is provided between the outer side of the positioning mandrel and the inner side of the toothed ring, and the height-fixing ring is fixed to the extrusion molding head by screws. When the extrusion molding head moves down and the height-fixing ring contacts the upper end face of the outer ring of the bearing, the extrusion molding head cannot continue to move down due to the blocking effect of the outer ring of the bearing, thereby controlling the depth of the protruding tooth inserted into the stepped surface.

[0009] This invention is further configured such that: multiple circumferentially distributed clearance notches are formed on the outer wall of the height-fixing ring, each clearance notch corresponding to a protruding tooth. By setting the clearance notches, the locking structure squeezed out by the protruding tooth can be prevented from contacting the height-fixing ring.

[0010] The outstanding effect of this utility model is:

[0011] Compared with existing technologies, by extruding the stepped surface of the workpiece near the bearing through the extrusion molding head to form a locking structure at the bearing end, the stability of bearing installation can be increased, and the machining of the retaining ring groove and the installation of the retaining ring can be eliminated, thus optimizing the production process of the tubular assembly and improving production efficiency.

[0012] By setting a height-fixing ring, the downward movement of the extrusion head can be effectively controlled, thus avoiding excessive deformation caused by excessive extrusion. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a half-sectional view of the extrusion molding head of this utility model;

[0015] Figure 3 This is a comparative diagram of the workpiece before and after extrusion;

[0016] Figure 4 for Figure 3 A view of A;

[0017] Figure 5 This is a schematic diagram of the extrusion-molded headband height-fixing ring of this utility model;

[0018] Figure 6 for Figure 5 Sectional view of BB.

[0019] Attached reference numerals: 1. Lifting pressure head;

[0020] 2. Workpiece positioning mechanism;

[0021] 3. Extrusion molding head; 31. Positioning mandrel; 32. Gear ring; 33. Convex tooth; 34. Grip groove; 35. Cavity;

[0022] 40. Height-fixing ring; 41. Screw; 42. Relief notch;

[0023] 90. Bearing; 91. Workpiece; 92. Stepped hole; 93. Stepped surface; 94. Locking structure. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] The following is for reference Figures 1 to 6 The present invention will be described as follows:

[0026] An extrusion molding device for a bearing locking structure, such as Figure 1 , Figure 2 As shown, the device includes a hydraulic press, a workpiece positioning mechanism 2 fixed on the worktable of the hydraulic press, and an extrusion forming head 3 below the lifting pressure head 1 of the hydraulic press. The extrusion forming head 3 includes an integrally formed positioning mandrel 31 and a toothed ring 32, with several circumferentially distributed protruding teeth 33 formed on the toothed ring 32. During press fitting, the workpiece 91 with the bearing 90 already installed is first installed on the workpiece positioning mechanism 2; then the extrusion forming head 3 is inserted into the stepped hole 92 of the workpiece 91 located above the bearing, and the positioning mandrel 31 is inserted into the inner ring of the bearing 90, thereby centering the extrusion forming head. At this time, the protruding teeth 33 abut against the stepped surface 93 adjacent to the bearing 90; then the lifting pressure head of the hydraulic press moves down, causing the extrusion forming head to move down, and the protruding teeth 33 are inserted into the stepped surface 93, causing the "flesh" of the workpiece in the stepped surface to be squeezed towards the bearing. The squeezed part forms a locking structure 94 at the upper edge of the outer ring of the bearing. The locking structure is as follows: Figure 3 , Figure 4 As shown, the locking structure firmly fixes the bearing 90 to the workpiece, ensuring structural stability. It also eliminates the need for machining the retaining ring groove and installing the retaining ring, thus optimizing the production process and improving production efficiency.

[0027] like Figure 2 As shown, the upper outer wall of the extrusion molding head 3 in this embodiment is formed with a gripping groove 34. The gripping groove can make it convenient for workers to pick up the extrusion molding head and prevent it from slipping. On the other hand, it can reduce the weight of the extrusion molding head.

[0028] The extrusion molding head 3 has a cavity 35 inside, which can further reduce the weight of the extrusion molding head.

[0029] like Figure 5 , Figure 6 As shown, in this embodiment, a height-fixing ring 40 is provided between the outer side of the positioning mandrel 31 and the inner side of the toothed ring 32. The height-fixing ring 40 is fixed to the extrusion molding head 3 by screws 41. When the extrusion molding head moves down and the height-fixing ring contacts the upper end face of the outer ring of the bearing 90, the extrusion molding head cannot continue to move down due to the blocking effect of the outer ring of the bearing, thereby controlling the depth of the protrusion tooth inserted into the stepped surface.

[0030] The outer wall of the height-fixing ring 40 is formed with multiple circumferentially distributed clearance notches 42, each clearance notch 42 corresponding to a protruding tooth 33. By setting the clearance notches, the locking structure 94 squeezed out by the protruding tooth can be prevented from contacting the height-fixing ring.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A bearing locking structure extrusion molding device, comprising a hydraulic press, wherein a workpiece positioning mechanism (2) is fixed on the worktable of the hydraulic press, and an extrusion molding head (3) is provided below the lifting pressure head (1) of the hydraulic press, characterized in that: The extrusion head (3) includes an integrally formed positioning mandrel (31) and a toothed ring (32), on which a number of circumferentially distributed protruding teeth (33) are formed.

2. The bearing locking structure extrusion molding device according to claim 1, characterized in that: A gripping groove (34) is formed on the upper outer wall of the extrusion head (3).

3. The bearing locking structure extrusion molding device according to claim 1, characterized in that: The extrusion head (3) has an internal cavity (35).

4. The bearing locking structure extrusion molding device according to claim 1, characterized in that: A height-fixing ring (40) is provided between the outer side of the positioning mandrel (31) and the inner side of the toothed ring (32). The height-fixing ring (40) is fixed to the extrusion head (3) by screws (41).

5. The bearing locking structure extrusion molding device according to claim 4, characterized in that: The outer wall of the fixed height ring (40) is formed with a plurality of circumferentially distributed clearance notches (42), each clearance notch (42) corresponding to a protruding tooth (33).

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