A cage small washer post hole center diameter detection tool and method

Abstract

The application provides a cage small washer support hole center diameter detection tool and method, which comprises a detection reference surface for being attached to the outer peripheral surface of the cage small washer and a detection reference surface for being attached to the outer edge surface of the cage small washer, and further comprises a detection surface, the included angle between the detection surface and the detection reference surface is equal to the half cone angle of the support hole center line, and the intersection of the detection surface, the detection reference surface and the positioning surface has a set distance. The cage small washer support hole center diameter detection tool provided by the application can effectively solve the technical problem of large detection error of the support hole center diameter in the prior art.

Description

Technical Field

[0001] This invention relates to a tool and method for detecting the center diameter of the cage washer support hole, belonging to the field of bearing testing technology. Background Technology

[0002] like Figure 1 As shown, the existing tapered roller bearing cage includes a large cage washer 1, a small cage washer 2, and a support 3. The large cage washer 1 and the small cage washer 2 have support holes 4 for the support 3 to pass through. The small cage washer 2 has an outer peripheral surface 5 and an end face 6, with an outer edge surface 7 on the outer side of the end face 6. For example... Figure 2 As shown, the angle of the half-cone angle of the centerline of the support hole on the small washer of the cage is α, and the center diameter of the support hole is D. Because the end face where the support hole is located is inclined to the horizontal end face, the center diameter of the support hole cannot be directly measured. The current measurement method is to first measure the diameter d of the inner diameter hole on the small washer of the cage, then use vernier calipers to measure the distance L at the intersection of the inner diameter hole wall and the support hole wall and the end face where the support hole is located, and the diameter d1 of the support hole. Then, a conversion is performed: the center diameter of the support hole D = d + d1 × cosα + L, where α is the half-cone angle of the centerline of the support hole. In the specific measurement process, because the intersection of the inner diameter hole wall and the support hole wall and the end face where the support hole is located is not on the same plane, the measurement error is relatively large. Furthermore, after the end of the support hole is chamfered, it is impossible to use vernier calipers to measure the distance L at the intersection of the inner diameter hole wall and the support hole wall and the end face where the support hole is located. Therefore, the center diameter can only be measured after the support hole is drilled and before chamfering, making the inspection work very inconvenient. Summary of the Invention

[0003] The purpose of this invention is to provide a tool for detecting the center diameter of the support hole of the cage washer, thereby solving the technical problem of large detection errors in the center diameter of the support hole in the prior art. Simultaneously, this invention also provides a method for detecting the center diameter of the support hole of the cage washer, to solve the aforementioned problems.

[0004] The cage washer support hole center diameter detection tool in this invention adopts the following technical solution:

[0005] The cage small washer support hole center diameter detection tool includes a detection reference surface for contacting the outer peripheral surface of the cage small washer and a detection reference surface for contacting the outer edge surface of the cage small washer. The detection tool also includes a detection surface. The included angle between the detection surface and the detection reference surface is equal to the half cone angle of the support hole center line. There is a set distance at the intersection of the detection surface, the detection reference surface and the positioning surface.

[0006] Beneficial effects: The application initiatively proposes a small gasket support hole center diameter detection tool, which is used as follows: first, measure the diameter d of the support hole, measure the outer diameter D1 of the small gasket, then make the detection reference surface fit the outer circumferential surface of the small gasket, make the positioning surface fit the outer edge surface of the small gasket, measure the distance L2 between the detection surface and the support hole wall by using a vernier caliper, the distance between the detection surface and the intersection of the detection reference surface and the positioning surface is L3, calculate the support hole center diameter D2 according to the formula D2=D1-2(L2-L3)cosα-dcosα, compared with the prior art, the detection tool only needs to measure the distance between the detection surface and the support hole wall, avoids measuring the distance between the inner hole wall and the intersection of the support hole wall and the end surface, since the angle between the detection surface and the detection reference surface is equal to the half cone angle of the support hole center line, the detection surface is parallel to the center axis of the support hole during detection, and the detection is more convenient and has higher precision.

[0007] Further, the intersection of the detection reference surface and the positioning surface is provided with an avoiding opening for avoiding the intersection of the outer edge surface and the outer circumferential surface on the small gasket.

[0008] Beneficial effects: The avoiding opening at the intersection of the detection reference surface and the positioning surface can make the detection tool adapt to different small gaskets.

[0009] Further, the detection tool further comprises a supporting surface for fitting the end surface of the small gasket.

[0010] Beneficial effects: During detection, the detection tool can be positioned by fitting the end surface of the small gasket through the supporting surface.

[0011] Further, the intersection of the supporting surface and the positioning surface is provided with an avoiding opening for avoiding the intersection of the outer edge surface and the end surface on the small gasket.

[0012] Beneficial effects: The avoiding opening at the intersection of the supporting surface and the positioning surface can make the detection tool adapt to different small gaskets.

[0013] The small gasket support hole center diameter detection method in the application adopts the following technical scheme:

[0014] The small gasket support hole center diameter detection method comprises the following steps: 1, measure the diameter d of the support hole, measure the outer diameter D1 of the small gasket, and measure the distance L1 between the intersection of the support hole wall and the outer edge surface and the outer circumferential surface on the small gasket in the radial direction of the support hole; 2, calculate the support hole center diameter D2, and the calculation formula is D2=D1-2L1cosα-dcosα, wherein α is the half cone angle of the support hole center line on the small gasket.

[0015] Beneficial effects: the application initiatively proposes a method for detecting the center diameter of the small washer support hole of the retainer, when the detection tool is used, the diameter d of the support hole is measured first, the outer diameter D1 of the small washer of the retainer is measured, then the detection reference surface is attached to the outer circumferential surface of the small washer of the retainer, the positioning surface is attached to the outer edge surface of the small washer of the retainer, the distance L1 between the intersection of the support hole wall and the outer edge surface and the outer circumferential surface of the small washer of the retainer is measured in the radial direction of the support hole, the center diameter D2 of the support hole is calculated according to the formula D2=D1-2L1cosα-dcosα, compared with the prior art, the detection tool provided by the application only needs to measure the distance between the detection surface and the support hole wall when detecting, and the measurement of the distance between the inner hole wall and the support hole wall and the intersection of the support hole on the end surface is avoided, since the included angle between the detection surface and the detection reference surface is equal to the half cone angle of the center line of the support hole, the detection surface is parallel to the center axis of the support hole when detecting, and the detection is more convenient and has higher precision.

[0016] Further, when measuring L1, the detection reference surface of the detection tool is attached to the outer circumferential surface of the small washer of the retainer, the positioning surface of the detection tool is attached to the outer edge surface of the small washer of the retainer, the included angle between the detection surface and the detection reference surface of the detection tool is equal to the half cone angle of the center line of the support hole, the detection surface and the detection reference surface and the intersection of the detection reference surface have a set distance L3, the distance L2 between the detection surface and the support hole wall is measured, and L1=L2-L3.

[0017] Beneficial effects: when measuring L1 by using the detection tool, the detection reference surface of the detection tool is attached to the outer circumferential surface of the small washer of the retainer, the positioning surface of the detection tool is attached to the outer edge surface of the small washer of the retainer, the included angle between the detection surface and the detection reference surface of the detection tool is equal to the half cone angle of the center line of the support hole, so that the detection surface is parallel to the center axis of the support hole, the detection is more convenient and has higher precision. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the prior art tapered roller bearing retainer;

[0019] Figure 2 is Figure 1 a size schematic view of the support retainer small washer in the embodiment;

[0020] Figure 3 is a structural schematic view of the detection tool for detecting the center diameter of the small washer support hole of the retainer in the embodiment 1;

[0021] Figure 4 is Figure 3 a state schematic view of the detection tool when used in the embodiment;

[0022] Figure 5 is Figure 3 a size schematic view of the support retainer small washer in the embodiment.

[0023] The names of the components corresponding to the corresponding reference signs in the figures are:

[0024] Figures 1-2 In the figure: 1, large retainer washer; 2, small retainer washer; 3, strut; 4, strut hole; 5, outer peripheral surface; 6, end surface; 7, outer edge surface; a, half cone angle of strut hole center line; L, distance between inner diameter hole wall and strut hole wall and the end surface where the strut hole is located; D, strut hole center diameter; d, inner diameter hole diameter; d1, strut hole diameter;

[0025] Figures 3-5 In the figure: 100, detection surface; 101, detection reference surface; 102, support surface; 103, avoidance opening; 104, positioning surface; a, half cone angle of strut hole center line; L1, distance between strut hole wall and edge of outer edge surface of small retainer washer; L2, distance between detection surface and strut hole wall; L3, distance between detection surface and edge of outer edge surface of small retainer washer; D1, actual outer diameter of small retainer washer; D2, strut hole center diameter; D3, nominal outer diameter of small retainer washer; d, strut hole diameter. DETAILED DESCRIPTION

[0026] The application will be further described in detail below in combination with examples.

[0027] Example 1 of the small retainer washer strut hole center diameter detection tool (hereinafter referred to as detection tool) in the application:

[0028] As shown in Figure 3 , Figure 4 and Figure 5 , the detection tool provided in the embodiment includes a detection surface 100, a detection reference surface 101, and a positioning surface 104. When measuring, the positioning surface 104 is attached to the outer edge surface of the small retainer washer, the detection reference surface 101 is attached to the outer peripheral surface of the small retainer washer, the distance L2 between the detection surface 100 and the strut hole wall is measured, the set distance at the intersection of the detection surface 100, the detection reference surface 101, and the positioning surface 104 is L3, the diameter d of the strut hole is measured, the outer diameter D1 of the small retainer washer is measured, the strut hole center diameter D2 is calculated according to the calculation formula, and the calculation formula is specifically: D2=D1-2(L2-L3)cosα-dcosα.

[0029] In the embodiment, as shown in Figure 3As shown in the figure, the detection tool is in L-shaped structure as a whole, the detection reference surface 101 and the positioning surface 104 are arranged on the inner side surface of the detection tool, and the detection surface 100 is arranged on the outer side surface of the detection tool, the included angle between the detection surface 100 and the detection reference surface 101 is equal to the half cone angle of the center line of the pillar hole, when the detection reference surface 101 is attached to the outer peripheral surface of the small retainer washer, the detection surface 100 is parallel to the center axis of the pillar hole, in the radial direction of the pillar hole, the distance L2 between the detection surface 100 and the hole wall of the pillar hole is measured by using the vernier caliper, the distance L3 between the detection surface 100 and the intersection of the detection reference surface and the positioning surface is set, and therefore the distance L1 between the hole wall of the pillar hole and the intersection of the outer edge surface and the outer peripheral surface on the small retainer washer is L2-L3.

[0030] In the embodiment, the edge of the outer edge surface of the small retainer washer is located at the intersection of the outer edge surface and the outer peripheral surface on the small retainer washer, and therefore, as shown in the figure, Figure 3 the intersection of the positioning surface 104 and the detection reference surface 101 is provided with the avoiding opening 103 to avoid the edge of the outer edge surface of the small retainer washer in use.

[0031] In the embodiment, in order to ensure that the supporting surface 102 is attached to the end surface of the small retainer washer, as shown in the figure, Figure 3 the intersection of the supporting surface 102 and the positioning surface 104 is provided with the avoiding opening 103 to avoid the protrusion.

[0032] In the embodiment, the outer diameter D1 of the small retainer washer is equal to the sum of the nominal diameter D3 and the deviation δ1, that is, D1=D3+δ1.

[0033] The use process of the detection tool provided in the embodiment is as follows: as shown in the figures, Figure 4 and Figure 5 firstly, the diameter d of the pillar hole is measured, the outer diameter D1 of the small retainer washer is measured, then the supporting surface 102 is attached to the end surface of the small retainer washer, the detection reference surface 101 is attached to the outer peripheral surface of the small retainer washer, the distance L2 between the detection surface 100 and the hole wall of the pillar hole is measured by using the vernier caliper, and the center diameter D2 of the pillar hole is calculated according to the formula D2=D1-2(L2-L3)cosα-dcosα, wherein α is the half cone angle of the center line of the pillar hole, and L3 is the set distance between the detection surface 100 and the intersection of the detection reference surface 101 and the positioning surface 104. The detection tool provided in the application only needs to measure the distance between the detection surface 100 and the hole wall of the pillar hole in detection, and the measurement of the distance between the hole wall of the inner diameter hole and the intersection of the hole wall of the pillar hole and the end surface on which the pillar hole is located is avoided. Since the detection surface 100 is parallel to the center axis of the pillar hole, the detection is more accurate and more convenient.

[0034] Embodiment 2 of the small retainer washer pillar hole center diameter detection tool in the application:

[0035] The embodiment is different from the embodiment 1 in that the support surface and the positioning surface intersect at the avoiding opening in the embodiment 1.

[0036] The embodiment 3 of the retainer small washer strut hole center diameter detection tool in the application:

[0037] The embodiment is different from the embodiment 1 in that the detection tool further comprises the support surface for abutting the end surface of the retainer small washer in the embodiment 1.

[0038] The embodiment 4 of the retainer small washer strut hole center diameter detection tool in the application:

[0039] The embodiment is different from the embodiment 1 in that the detection reference surface and the positioning surface intersect at the avoiding opening in the embodiment 1.

[0040] The embodiment 1 of the retainer small washer strut hole center diameter detection method (hereinafter referred to as the detection method) in the application:

[0041] The detection method provided by the embodiment is specifically as follows: first, the diameter d of the strut hole is measured, the outer diameter D1 of the retainer small washer is measured, then the detection tool is abutted with the outer circumferential surface of the retainer small washer by using the detection tool, the detection reference surface of the detection tool is abutted with the outer edge surface of the retainer small washer, the distance L2 between the detection surface and the strut hole wall is measured by using the vernier caliper, the set distance between the detection surface and the intersection of the detection reference surface and the positioning surface is L3, the strut hole center diameter D2 is calculated according to the formula D2=D1-2(L2-L3)cosα-dcosα, and α in the formula is the half cone angle of the strut hole center line.

[0042] Compared with the prior art, the detection method provided by the application only needs to measure the distance between the detection surface and the strut hole wall during detection, and avoids the measurement of the distance between the inner diameter hole wall and the intersection of the strut hole wall and the end surface where the strut hole is located. Since the included angle between the detection surface and the detection reference surface is equal to the half cone angle of the strut hole center line, the detection surface is parallel to the center axis of the strut hole during detection, and the detection is more convenient and has higher precision.

[0043] The above is only the preferred embodiment of the application, and does not limit the application, and the patent protection scope of the application is subject to the claims, and any equivalent structural changes made by using the content of the specification and the drawings of the application should also be included in the protection scope of the application.

Claims

1. A cage small washer post hole center diameter inspection tool characterized by, The detection tool is in L shape as a whole, comprising a detection reference surface for abutting with the outer peripheral surface of the small washer of the retainer and a positioning surface for abutting with the outer edge surface of the small washer of the retainer, the detection tool further comprising a detection surface, the detection reference surface and the positioning surface being arranged on the inner side surface of the detection tool, and the detection surface being arranged on the outer side surface of the detection tool, when the detection reference surface abuts with the outer peripheral surface of the small washer of the retainer, the detection surface is parallel to the central axis of the strut hole, the included angle between the detection surface and the detection reference surface is equal to the half cone angle of the central line of the strut hole, and the intersection of the detection surface, the detection reference surface and the positioning surface has a set distance; the detection tool further comprises a supporting surface for abutting with the end surface of the small washer of the retainer, based on the detection tool, the central diameter D2 of the strut center hole is equal to wherein α is the half cone angle of the central line of the strut hole on the small washer of the retainer, and d is the diameter of the strut hole.

2. The race small washer support bore center diameter inspection tool of claim 1 wherein, The intersection of the reference surface and the positioning surface is provided with an avoiding opening for avoiding the intersection of the upper outer edge surface of the small washer of the retainer and the outer peripheral surface.

3. The race small washer support bore center diameter inspection tool of claim 1 wherein, The intersection of the support surface and the positioning surface is provided with an avoiding opening for avoiding the intersection of the upper outer edge surface of the small washer of the retainer and the end surface.

4. A method of detecting the center diameter of a retainer small washer post hole, characterized by, The method is implemented by using the detection tool of any one of claims 1-3, comprising the following steps: (1) measuring the diameter d of the pillar hole, measuring the outer diameter D1 of the small retainer washer, and measuring the distance L1 between the intersection of the pillar hole wall and the outer peripheral surface of the small retainer washer in the radial direction of the pillar hole; (2) calculating the center diameter D2 of the pillar hole, and the calculation formula is , wherein α is the half-cone angle of the center line of the pillar hole of the small retainer washer, the detection reference surface of the detection tool is attached to the outer peripheral surface of the small retainer washer when L1 is measured, the positioning surface of the detection tool is attached to the outer edge surface of the small retainer washer, the included angle between the detection surface and the detection reference surface of the detection tool is equal to the half-cone angle of the center line of the pillar hole, there is a set distance L3 between the intersection of the detection surface and the detection reference surface and the detection reference surface, the distance L2 between the detection surface and the pillar hole wall is measured, and L1=L2-L3.

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