Tool for rapidly detecting curvature of outer arc of bearing outer ring
By designing a tooling structure made of steel, using the inner arc structure and marks to distinguish the upper and lower curvature limits, the curvature of the outer ring of the bearing is quickly tested, the inspection problems in the prior art are solved, and the bearing capacity is improved and service life.
Patent Information
- Application Number
- CN202420720199.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-09
AI Technical Summary
The prior art is difficult to quickly and accurately verify the curvature of the outer arc of the bearing outer ring, which affects the contact stress distribution and bearing capacity of the bearing, and thus affects the performance and service life.
A tooling structure consisting of steel is designed, with the body being equipped with a first and second inner arc structures, indicating the upper and lower limits of curvature respectively, and distinguishing it through marks, combining the inclined surface and through holes to achieve rapid detection.
It can quickly and accurately check the curvature of the outer arc of the bearing outer ring, ensure uniform contact stress distribution, and improve the bearing bearing capacity and service life.
Smart Images
Figure CN222144019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bearing manufacturing, in particular to a tool for quickly testing the curvature of the outer arc of a bearing outer ring. Background Art
[0002] With the rapid development of the automotive industry, the requirements for bearing appearance, structure and installation are becoming higher and higher. At present, according to the bearing housing size structure provided by customers, the outer ring outer arc design structure is already one of the most common structures on the market. This outer ring outer arc not only greatly improves the convenience of actual bearing installation, but also has a certain self-aligning effect in actual use.
[0003] The curvature of the outer arc of the bearing outer ring is an important design parameter, which affects the contact stress distribution and load-bearing capacity of the bearing. The curvature is closely related to the performance and service life of the bearing.
[0004] Generally speaking, the smaller the curvature, the contact stress will be concentrated in a small range of the bearing contact area, which can easily lead to contact fatigue and even bearing surface peeling. On the contrary, the larger the curvature, the more uniform the contact stress distribution will be, and the bearing's load-bearing capacity will be higher.
[0005] Therefore, in bearing design, choosing the appropriate curvature is crucial.
[0006] Therefore, how to quickly test the curvature of the outer arc of the bearing outer ring becomes very critical. Utility Model Content
[0007] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a tool for quickly testing the curvature of the outer arc of the outer ring of a bearing.
[0008] In order to achieve the purpose of this utility model, the technical solution adopted is:
[0009] A tool for quickly inspecting the curvature of the outer arc of a bearing outer ring, comprising:
[0010] A tooling structure body, the tooling structure body is made of steel,
[0011] The upper radial surface of the tooling structure body is a first inner arc structure;
[0012] The curvature range of the top arc surface of the first inner arc structure is the upper limit value of the curvature of the outer arc of the outer ring of the bearing to be tested;
[0013] A first mark is provided on the tooling structure body at a position close to the top arc surface of the first inner arc structure;
[0014] The radial surface of the lower end of the tooling structure body is the top arc surface of the second inner arc structure;
[0015] The curvature range of the top arc surface of the second inner arc structure is the lower limit value of the curvature of the outer arc of the outer ring of the bearing to be tested;
[0016] A second mark is provided on the tooling structure body at a position close to the top arc surface of the second inner arc structure;
[0017] Distinguish the top arc surface side of the first inner arc structure and the top arc surface side of the second inner arc structure by using the first mark and the second mark;
[0018] The axial surface of the first inner arc structure protrudes outward to form a first inclined surface and a second inclined surface;
[0019] The axial surface of the second inner arc structure protrudes outward to form a third inclined surface and a fourth inclined surface.
[0020] In a preferred embodiment of the present invention, the tooling structure body is made of GCr15 steel.
[0021] In a preferred embodiment of the present invention, the hardness of the tooling structure body ranges from 62 to 64 HRC.
[0022] In a preferred embodiment of the present invention, the first inclined plane and the second inclined plane are perpendicular to each other.
[0023] In a preferred embodiment of the present invention, the third inclined plane and the fourth inclined plane are perpendicular to each other.
[0024] In a preferred embodiment of the present invention, a fixing through hole is provided in the middle of the tooling structure body.
[0025] The beneficial effects of the utility model are:
[0026] The utility model can quickly check the curvature of the outer arc of the bearing outer ring, and the overall structure has high hardness and durability. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .
[0028] Figure 2 The structure of the utility model is shown in FIG. Figure 2 . DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following structure, the description of the well-known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.
[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0031] like Figure 1 The tool shown is for quickly testing the curvature of the outer arc of the outer ring of a bearing, and includes a tool structure body 100. The tool structure body 100 is made of steel, specifically heat-treated GCr15 steel, so that the hardness range of the tool structure body is 62-64HRC.
[0032] The upper radial surface of the tooling structure body 100 is a first inner arc structure 110 , and the arc range at the top arc surface 111 of the first inner arc structure 110 is the upper limit value of the curvature of the outer arc of the outer ring of the bearing to be tested.
[0033] A first mark 130 is disposed on the tooling structure body 100 near the top arc surface 111 of the first inner arc structure 110 .
[0034] The radial surface at the lower end of the tooling structure body 100 is the top arc surface 121 of the second inner arc structure 120 , and the curvature range of the top arc surface 121 of the second inner arc structure 120 is the lower limit value of the curvature of the outer arc of the outer ring of the bearing to be tested.
[0035] A second mark 140 is disposed on the tooling structure body 100 near the top arc surface 121 of the second inner arc structure 120 .
[0036] The top arc surface 111 side of the first inner arc structure 110 and the top arc surface 121 side of the second inner arc structure 120 can be distinguished by the first mark 130 and the second mark 140. The axial surface 112 of the first inner arc structure 110 protrudes outward to form a first inclined surface 112a and a second inclined surface 112b, and the first inclined surface 112a and the second inclined surface 112b are perpendicular to each other.
[0037] The axial surface 122 of the second inner arc structure 120 protrudes outward to form a third inclined surface 122a and a fourth inclined surface 122b. The third inclined surface 122a and the fourth inclined surface 122b are perpendicular to each other. A fixing through hole 150 is provided in the middle of the tooling structure body 100.
[0038] Because of the above structure, the working principle of the utility model is:
[0039] This tooling takes the outer arc size design of bearing model LR6009 as an example. In the actual outer arc grinding process, the actual curvature basic size of the outer arc is specified internally as follows: (±0.003), so the first inner arc structure 110 (conforming to "+") is taken as the upper limit of curvature, and the basic dimension tolerance of the design is The second inner arc structure 120 (conforming to “—”) is used as the lower limit of curvature, and the basic dimension tolerance of the design is
[0040] During the inspection, you need to hold the inspection tool and the product in a well-lit environment and inspect them visually.
[0041] Judgment method: Place one side of the first inner arc structure 110 (which meets the "+") on the outer arc product of the outer ring and observe it in the light. If there are gaps on both sides of the outer arc of the product and on both sides of the tooling, it is determined that the curvature tolerance of the outer arc of the product is less than the upper limit curvature tolerance. At the same time, place one side of the second inner arc structure 120 (which meets the "-") on the outer arc product of the outer ring and observe it in the light. If there is a gap between the outer arc of the product and the middle part of the tooling, it is determined that the curvature tolerance of the outer arc of the product is greater than the lower limit curvature tolerance. The above two conditions must be met at the same time to determine that the curvature of the outer arc of the product is qualified.
Claims
1. A tool for quickly testing the curvature of the outer arc of a bearing outer ring, characterized in that: include: A tooling structure body, the tooling structure body is made of steel, The upper radial surface of the tooling structure body is a first inner arc structure; The curvature range of the top arc surface of the first inner arc structure is the upper limit value of the curvature of the outer arc of the outer ring of the bearing to be tested; A first mark is provided on the tooling structure body at a position close to the top arc surface of the first inner arc structure; The radial surface of the lower end of the tooling structure body is the top arc surface of the second inner arc structure; The curvature range of the top arc surface of the second inner arc structure is the lower limit value of the curvature of the outer arc of the outer ring of the bearing to be tested; A second mark is provided on the tooling structure body at a position close to the top arc surface of the second inner arc structure; Distinguish the top arc surface side of the first inner arc structure and the top arc surface side of the second inner arc structure by using the first mark and the second mark; The axial surface of the first inner arc structure protrudes outward to form a first inclined surface and a second inclined surface; The axial surface of the second inner arc structure protrudes outward to form a third inclined surface and a fourth inclined surface.
2. A tool for quickly testing the curvature of the outer arc of the outer ring of a bearing as claimed in claim 1, characterized in that: The tooling structure body is made of GCr15 steel.
3. A tool for quickly testing the curvature of the outer arc of the outer ring of a bearing as claimed in claim 1, characterized in that: The hardness range of the tooling structure body is 62-64HRC.
4. A tool for quickly testing the curvature of the outer arc of the outer ring of a bearing as claimed in claim 1, characterized in that: The first inclined surface and the second inclined surface are perpendicular to each other.
5. A tool for quickly testing the curvature of the outer arc of the outer ring of a bearing as claimed in claim 1, characterized in that: The third inclined surface and the fourth inclined surface are perpendicular to each other.
6. A tool for quickly testing the curvature of the outer arc of the outer ring of a bearing as claimed in claim 1, characterized in that: A fixing through hole is arranged in the middle of the tooling structure body.