Third-generation wheel hub ball bearing assembly grading matching device

Abstract

The utility model relates to the technical field of bearing product production, in particular to a third-generation hub ball bearing assembly grading matching device which comprises an upper die, a middle die matched with the upper die and a lower die tightly matched with the upper die, an upper die upper end inner hole is formed in the upper die, and three through holes are evenly formed in the outer portion of the upper die upper end inner hole in the circumferential direction. The connector is connected with measuring equipment; the utility model has the advantages that the inner ring grading device and the outer ring flange plate component are sorted by adopting component sorting, so that the influence of accumulated error and manufacturing scattering difference on the clearance is eliminated, the clearance matching is more accurate, the fitting rate of assembly is improved, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing product production, and particularly relates to a grading and matching device for a third-generation hub ball bearing assembly. Background Art

[0002] There are many influencing factors for the clearance of the third-generation ball hub bearing, including the outer ring groove diameter, curvature, groove pitch, and the inner ring groove diameter, groove position, curvature, and the flange groove diameter, distance from the rib to the groove, curvature, etc.

[0003] The original grading process is based on measuring the relevant partial parameters of the parts that affect the clearance. One is to measure the outer ring groove diameter and the inner ring and flange groove diameters respectively. Through calculation, steel balls with different gauge values are selected for compensation to reach the set clearance range.

[0004] The original grading process is based on measuring the relevant partial parameters of the parts that affect the clearance. The other is to grade the inner ring, and at the same time measure the outer ring groove diameter and the flange groove diameter, and then through calculation, select inner rings of different grades to reach the set clearance range.

[0005] However, the above two schemes cannot measure the outer ring groove pitch, the distance from the flange rib height to the groove, curvature, etc. In this way, there will be a comprehensive error, resulting in unqualified clearance and low matching rate. And the recheck of the clearance is in the state where the inner ring is assembled on the flange. If the clearance does not meet the relevant technical requirements, it must be repaired. When repairing, the inner ring needs to be pulled out from the flange, further reducing or damaging the accuracy of the relevant parts, affecting the accuracy of the bearing, and ultimately resulting in the inability or incomplete guarantee of the function and performance of the whole part. Summary of the Invention

[0006] The purpose of the utility model is to provide a grading and matching device for a third-generation hub ball bearing assembly, so as to solve the problems of unstable clearance, low matching rate, and rework affecting product quality proposed in the above technical background.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A grading and matching device for a third-generation hub ball bearing assembly, including an upper die, a middle die cooperating with the upper die, and a lower die tightly fitted with the upper die. The upper die is provided with an inner hole at the upper end of the upper die; 3 through holes are evenly distributed on the outer circumference of the inner hole at the upper end of the upper die for connecting with measuring equipment; a middle hole of the upper die is provided in the middle part of the upper die; and a bottom inner hole is provided at the lower end of the upper die.

[0008] Furthermore, the middle die is placed in the upper die, and the middle die is provided with a middle die outer diameter, a middle die inner hole, a middle die small outer diameter and a middle die inner hole chamfer. The middle die outer diameter is clearance matched with the inner hole of the upper end of the upper die; the middle die small outer diameter is clearance matched with the middle hole of the upper die, and the middle die inner hole and the middle die inner hole chamfer are clearance matched with the flange shaft diameter when measuring the assembly, and tungsten steel is inlaid in the middle part above the middle die.

[0009] Furthermore, the lower die is modified from an inner ring of a corresponding model, and the outer diameter is pressed into the inner hole at the bottom of the upper die with interference fit, and the inner diameter is clearance-matched with the small outer diameter of the middle die.

[0010] Furthermore, the inner ring is pre-measured and graded for the comprehensive groove position, and the external measuring tool is an inner ring comprehensive groove position measuring device, which has a measuring pad connected to the displacement sensor inside.

[0011] Furthermore, a third-generation wheel hub ball bearing assembly grading and matching device also includes an outer ring steel ball flange assembly, the steel balls in the outer ring steel ball flange assembly are of the same specification, the middle mold has a middle mold lower plane, the middle mold lower plane contacts the flange edge, and the channel curvature of the lower mold contacts a group of steel balls above. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of a third generation wheel hub ball bearing assembly grade selection device of the utility model;

[0013] Figure 2 This is a view of a grading device for the integrated groove position value of the inner ring of a grading selection device for a third-generation hub ball bearing assembly of the utility model;

[0014] Figure 3 This is an upper die view of a third generation wheel hub ball bearing assembly step selection device of the utility model;

[0015] Figure 4 This is a middle mold view of a third-generation wheel hub ball bearing assembly step selection device of the utility model;

[0016] The accompanying drawings are numbered as follows:

[0017] Figure 1 1-outer ring steel ball flange assembly, 2-upper die, 3-middle die, 4-lower die, 5-inner ring, Figure 2 5-inner ring, 6-inner ring comprehensive groove position measuring device, 7-measuring pad, Figure 3 2A-upper die upper end inner hole, 2B-through hole, 2C-upper die middle hole, 2D-upper die bottom inner hole, Figure 4 3A-middle die outer diameter, 3B-middle die inner hole, 3C-middle die small outer diameter, 3D-tungsten steel, 3E-middle die lower plane, R-middle die inner hole chamfer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] refer to Figures 1-4 A third generation wheel hub ball bearing assembly grade selection device comprises an upper die 2, a middle die 3 matched with the upper die 2, and a lower die 4 tightly matched with the upper die 2. The upper die 2 is provided with an upper die upper end inner hole 2A; the outer circumferential direction of the upper die upper end inner hole 2A is evenly divided into three through holes 2B for connecting with a measuring device; the middle part of the upper die 2 is provided with an upper die middle hole 2C; the lower end of the upper die 2 is provided with a bottom inner hole 2D.

[0020] The middle die 3 is placed in the upper die 2, and the outer diameter 3A of the middle die is clearance matched with the inner hole 2A at the upper end of the upper die; the small outer diameter 3C of the middle die is clearance matched with the middle hole 2C of the upper die to achieve sliding fit; the inner hole 3B of the middle die and the chamfer R of the inner hole of the middle die are clearance matched with the flange shaft diameter when measuring the assembly; the middle part above the middle die is inlaid with tungsten steel 3D with wear-resistant and corrosion-resistant properties.

[0021] The lower die 4 is modified from the inner ring of the corresponding model, and the outer diameter is pressed into the inner hole 2D at the bottom of the upper die with interference, and the inner diameter is clearance-matched with the small outer diameter 3C of the middle die. Since the lower die 4 is modified according to the inner ring of the corresponding model, the corresponding curvature and groove diameter and other parameters are more suitable for the measured model, which increases the accuracy and stability of the measurement.

[0022] Pre-align the inner circle 5 Figure 2 The external measuring tool is the inner ring comprehensive groove position measuring device 6, and the internal measuring pad 7 is connected to the displacement sensor, and then connected to the computer to record the measurement data in real time and divide it into grades, so that the inner ring enters the corresponding gear channel.

[0023] The steel balls in the outer ring steel ball flange assembly 1 are of the same gauge value, and the measurement is performed using the measuring device composed of the upper die 2, the middle die 3 and the lower die 4. The lower plane 3E of the middle die contacts the flange rib, and the channel curvature of the lower die 4 contacts the upper group of steel balls. The distance between the flange rib and the upper group of steel balls is measured by the displacement sensor. The data is transmitted to the computer, and after computer analysis and calculation, the inner ring that can meet the clearance requirements is selected for matching, completing the clearance selection.

[0024] The beneficial effects of the third-generation hub ball bearing assembly grading and matching device: The inner ring grading device and the outer ring flange assembly sorting both adopt component sorting, eliminating the influence of cumulative error and manufacturing scatter on the clearance. The clearance matching is more accurate, improving the assembly matching rate and efficiency.

[0025] In the description of this specification, the terms "connection", "installation", "fixation", "setting", etc.

[0026] are all understood in a broad sense. For example, "connection" can be a fixed connection or indirectly through an intermediate component without affecting the component relationship and technical effect, or it can be an integral connection or a partial connection. In the case of this example, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention or the invention can be understood according to the specific situation.

[0027] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes an equivalent substitution or change, and should be covered by the protection scope of the present utility model.

Claims

1. A third-generation wheel hub ball bearing assembly grading and matching device, characterized in that, The invention comprises an upper die (2), a middle die (3) matched with the upper die (2), and a lower die (4) tightly matched with the upper die (2); the upper die (2) is provided with an upper die upper end inner hole (2A); the outer circumferential direction of the upper die upper end inner hole (2A) is evenly divided into three through holes (2B) for connecting with a measuring device; the middle part of the upper die (2) is provided with an upper die middle hole (2C); the lower end of the upper die (2) is provided with a bottom inner hole (2D); The middle die (3) is placed in the upper die (2). The middle die (3) is provided with a middle die outer diameter (3A), a middle die inner hole (3B), a middle die small outer diameter (3C) and a middle die inner hole chamfer (R). The middle die outer diameter (3A) is clearance matched with the inner hole (2A) at the upper end of the upper die; the middle die small outer diameter (3C) is clearance matched with the middle hole (2C) of the upper die. The middle die inner hole (3B) and the middle die inner hole chamfer (R) are clearance matched with the flange shaft diameter when measuring the assembly. Tungsten steel (3D) is inlaid in the middle part of the upper part of the middle die (3).

2. The grading and matching device for the third-generation hub ball bearing assembly according to claim 1, characterized in that, The lower die (4) is modified from an inner ring of a corresponding model, and its outer diameter is pressed into the inner hole (2D) at the bottom of the upper die with interference fit, and its inner diameter is clearance-matched with the small outer diameter (3C) of the middle die.

3. The third-generation hub ball bearing assembly grading and matching device according to claim 2, characterized in that The inner ring (5) is measured and graded for comprehensive groove position in advance, and the external measuring tool is an inner ring comprehensive groove position measuring device (6), which is internally connected to a displacement sensor by a measuring pad (7).

4. The third-generation wheel hub ball bearing assembly grading and matching device according to claim 3, wherein It also includes an outer ring steel ball flange assembly (1), wherein the steel balls in the outer ring steel ball flange assembly (1) are of the same specification, the middle mold (3) has a middle mold lower plane (3E), the middle mold lower plane (3E) contacts the flange edge, and the channel curvature of the lower mold (4) contacts a group of steel balls above.

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