Composite testing fixture for detecting concentricity of internal spline and spigot

Abstract

The utility model discloses a composite testing fixture for detecting the concentricity of an internal spline and a spigot, which comprises a go end, a no-go end and a grab handle arranged between the go end and the no-go end, and is characterized by further comprising an optical axis arranged between the go end and the grab handle, and the optical axis and the go end are the same in central axis, so that the concentricity detection of the internal spline and the spigot can be completed. The detection device detects the concentricity of the internal spline and the spigot while detecting the precision of the internal spline, the operation is simple and fast, the overall detection efficiency is improved, and the detection effect is better.

Description

Technical Field

[0001] The utility model relates to the field of dimension detection of mechanically processed parts, in particular to a composite inspection tool for detecting the concentricity of internal splines and stoppers. Background Art

[0002] At present, as the requirements for connection centering accuracy of internal spline products become higher and higher, the diameter of the stopper will be increased at the front end of the internal spline for centering installation; due to the processing reference conversion between the internal spline and the stopper diameter during the processing, there is an eccentricity error in the concentricity of the stopper and the internal spline. Previously, the separate detection device could only detect the accuracy of the spline itself, but did not detect the correlation between the concentricity of the stopper and the spline, resulting in a large concentricity error between the stopper and the spline during assembly, thus affecting the assembly.

[0003] The search did not find the same technical solution as the utility model, but only found some related comparative technical documents, mainly the following:

[0004] 1. The patent with application number 202311031950.6 discloses a device and method for detecting the concentricity of the spline and the end cover stopper of a motor, including a center disk, a cylindrical cavity, a rectangular guide cavity and a detection mechanism arranged inside the center disk, the detection mechanism comprising a turntable rotatably connected inside the cylindrical cavity, a plurality of symmetrically arranged guide grooves are arranged on the top of the turntable, a first sliding block and a second sliding block are slidably connected to the inner wall of the rectangular guide cavity, a micro pressure sensor and a spring are arranged between the first sliding block and the second sliding block, a guide block matching the guide groove is fixedly connected to the bottom of the first sliding block, and a pressure wheel is installed on the side of the second sliding block away from the spring. Although this patent can detect the concentricity of the spline and the stopper at the same time, the structure contains complex parts, involves a rotating structure and a sensor device, and the operation steps during detection are complicated.

[0005] 2. The patent with application number 202322904729.9 proposes a go and stop gauge. This patent allows the part to pass through the go gauge body. If the part passes, it means that the upper limit of the aperture error of the part meets the requirements. Then the part is moved to one end of the stop gauge body. If the part can pass through the stop gauge body, the part is unqualified. If the stop gauge cannot pass, it means that the part is qualified. The part is just stuck in the upper part of the stop gauge, which is easy to observe and operate. The stop gauge can be checked immediately after the go gauge inspection, thereby realizing a one-time detection of whether the inner aperture size of the part is qualified. The process of this tooling is simple and easy to operate, which greatly improves the detection efficiency of the parts. Although this patent can detect whether the inner aperture size of the part is qualified at one time, it cannot detect the concentricity of the spline and stop at the same time.

[0006] 3. The patent with application number 201521129253.5 provides a go and no-go gauge. The go and no-go gauge includes a profile body that is in the shape of a plate as a whole. From one end of the profile body to the other end, a first groove go gauge, a first groove no-go gauge and a handle are formed in sequence relative to the thickness direction of the profile body; on the first groove go gauge and the first groove no-go gauge, and relative to the width direction of the profile body, a second groove go gauge and a second groove no-go gauge are formed in sequence; the two opposite sides of the first groove go gauge and the two opposite sides of the second groove go gauge are connected by arc surfaces to form a round hole go gauge; the two opposite sides of the first groove no-go gauge and the two opposite sides of the second groove no-go gauge are connected by arc surfaces to form a round hole no-go gauge. It achieves three uses with one gauge, is easy to use, and does not need to turn around when using it for inspection, is easy to operate, saves time, and the cylindrical profile material has low cost and is easy to process. Although this patent is particularly suitable for a batch of parts with both holes and slot widths, it cannot detect the concentricity of splines and stoppers at the same time.

[0007] Through the analysis of the above patent, it can be found that although the current internal spline and stopper concentricity detection device can detect the internal spline and stopper concentricity at the same time, it is complex in structure and difficult to operate. Therefore, the above-mentioned problems still exist, and it is necessary to improve them. Utility Model Content

[0008] The technical problem to be solved by the utility model is to provide a composite gauge for detecting the concentricity of an internal spline and a stopper, wherein the composite gauge can not only detect the accuracy of the internal spline, but also complete the concentricity detection of the internal spline and the stopper while detecting the accuracy of the internal spline; and the composite gauge is simple in structure and easy to operate.

[0009] The technical solution proposed by the utility model is: a composite inspection tool for detecting the concentricity of internal splines and stoppers, including a through end, a stop end and a handle, the handle being arranged between the through end and the stop end, and the characteristic of the utility model is that it also includes an optical axis, the optical axis being arranged between the through end and the handle, the optical axis and the central axis of the through end being the same, and the concentricity detection of internal splines and stoppers can be completed. The optical axis is a cylindrical structure, and its radius is larger than the radius of the through end.

[0010] Furthermore, the through end is cylindrical, and has an annularly arranged spline teeth on the outside, and arc chamfers are circumferentially arranged on both sides.

[0011] Furthermore, the stop end is located at the other end of the handle connected to the through end, and the radius of the stop end is larger than the radius of the through end; there are also spline teeth for detecting the internal spline on the outer side of the stop end, and the spline teeth of the stop end are larger than the spline teeth of the through end and also larger than the internal spline being detected. During detection, the stop end cannot pass through the internal spline being detected.

[0012] Furthermore, the through end is connected to the optical axis through a first connecting portion of the handle; the first connecting portion is a tool retreat groove with an arc groove structure, the width and depth of the tool retreat groove only need to meet the tool retreat requirements of spline processing, and the tool retreat groove is arranged between the through end and the anti-slip handle.

[0013] Furthermore, a second connecting portion is provided between the stop end and the handle; the second connecting portion is a transition connecting groove, which facilitates the spline processing of the handle and the stop end.

[0014] Furthermore, the handle is a non-slip handle with a knurled mesh pattern on the handle surface and a plane on the side surface of the handle without the mesh pattern. The non-slip handle is arranged between the optical axis and the second connecting portion.

[0015] Furthermore, the cross section of the handle includes two structural forms: circular and polygonal.

[0016] The beneficial effects of the utility model are as follows: the utility model adds an optical axis for detecting the concentricity of the stop between the through end and the handle, and can complete the concentricity detection of the internal spline and the stop while detecting the accuracy of the internal spline; and the utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front elevation structure of a composite inspection fixture for detecting the concentricity of internal splines and stoppers;

[0018] Figure 2 This is the AA cross-sectional view of the through end of the composite inspection fixture for detecting the concentricity of the internal spline and the stop;

[0019] Figure 3 This is the BB section view of the handle of the composite inspection fixture for detecting the concentricity of the internal spline and the stop;

[0020] Description of reference numerals: 1, through end; 2, first connecting portion; 3, optical axis; 4, handle; 5, second connecting portion; 6, stop end; DETAILED DESCRIPTION

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] A composite inspection tool for detecting the concentricity of internal splines and stoppers, as shown in the attached Figures 1 to 3 As shown, the specific structure is as follows:

[0023] A composite inspection tool for detecting the concentricity of an internal spline and a stopper, comprising a through end 1, a stopper 6 and a handle 4, wherein the handle 4 is arranged between the through end 1 and the stopper 6, and wherein the composite inspection tool further comprises an optical axis 3, wherein the optical axis 3 is arranged between the through end 1 and the handle 4, and the central axis of the optical axis 3 and the through end 1 are the same, and the concentricity detection of the internal spline and the stopper can be completed. The optical axis 3 is a cylindrical structure, and its radius is greater than the radius of the through end 1.

[0024] Furthermore, the through end 1 is cylindrical, and has an annularly arranged spline teeth on the outside, and arc chamfers are provided circumferentially on both sides.

[0025] Furthermore, the stop end 6 is located at the other end of the handle 4 connected to the through end 1, and the radius of the stop end 6 is larger than the radius of the through end 1; there are also spline teeth for detecting the internal spline on the outer side of the stop end 6, and the spline teeth of the stop end 6 are larger than the spline teeth of the through end 1, and are also larger than the internal spline being detected. During detection, the stop end 6 cannot pass through the internal spline being detected.

[0026] Furthermore, the through end 1 and the optical axis 3 are connected to the handle 4 through the first connecting portion 2; the first connecting portion 2 is a tool retreat groove with an arc groove structure, and the tool retreat groove has a width and depth that meet the tool retreat requirements of spline processing, and the tool retreat groove is arranged between the through end 1 and the anti-slip handle 4.

[0027] Furthermore, a second connecting portion 5 is provided between the stop end 6 and the handle 4 ; the second connecting portion 5 is a transition connecting groove, which is convenient for spline processing of the handle 4 and the stop end 6 .

[0028] Furthermore, the handle 4 is a non-slip handle with a knurled mesh pattern on its surface and a plane without a mesh pattern on its side surface. The non-slip handle 4 is arranged between the optical axis 3 and the second connecting portion 5 .

[0029] Furthermore, the cross section of the handle 4 includes two structural forms: circular and polygonal.

[0030] When testing, first align the through end 1 of the testing device with the internal spline and insert it. If both the through end 1 and the optical axis 3 can enter the internal spline, it means that the internal spline precision and the concentricity of the internal spline and the stopper are qualified. If the through end 1 can enter, but the optical axis 3 cannot enter the internal spline, it means that the internal spline precision is qualified, but the concentricity of the internal spline and the stopper is unqualified. Then align the stop end 6 with the internal spline and insert it. If the stop end 6 enters the internal spline, it means that the internal spline is unqualified.

[0031] The beneficial effects of the utility model are as follows: the utility model adds an optical axis for detecting the concentricity of the stop between the through end and the handle, and can complete the concentricity detection of the internal spline and the stop while detecting the accuracy of the internal spline; and the utility model has a simple structure and is easy to operate.

[0032] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. A composite inspection tool for detecting the concentricity of an internal spline and a stopper, comprising a through end (1), a stopper (6) and a handle (4), wherein the handle (4) is arranged between the through end (1) and the stopper (6), and characterized in that: It also includes an optical axis (3), which is arranged between the through end (1) and the handle (4), and the central axis of the optical axis (3) and the through end (1) are the same, so that the concentricity detection of the internal spline and the stop can be completed.

2. A composite inspection tool for detecting the concentricity of internal splines and spigots according to claim 1, characterized in that: The optical axis (3) is a cylindrical structure, and its radius is greater than the radius of the through end (1).

3. A composite inspection tool for detecting the concentricity of internal splines and spigots according to claim 1, characterized in that: The through end (1) is cylindrical and has an outer side with annularly arranged spline teeth, and arc chamfers are provided on both sides in the circumferential direction.

4. A composite inspection tool for detecting the concentricity of internal splines and spigots according to claim 1, characterized in that: The stop end (6) is a structure with spline teeth on the outer side of the cylinder, and circular arc chamfers are arranged on both sides in the circumferential direction. The spline teeth of the stop end (6) are larger than the spline teeth of the through end (1) and are also larger than the internal spline to be detected. During detection, the stop end (6) cannot pass through the internal spline to be detected.

5. The composite inspection tool for detecting the concentricity of internal splines and splines according to claim 1, characterized in that: The through end (1) and the optical axis (3) are connected to the handle (4) via a first connecting portion; the first connecting portion (2) is a tool-retracting groove with a circular arc groove structure, the width and depth of the tool-retracting groove satisfying the tool-retracting requirements of spline machining, and the tool-retracting groove is arranged between the through end (1) and the handle (4).

6. A composite inspection tool for detecting the concentricity of internal splines and spigots according to claim 4, characterized in that: A second connecting portion (5) is provided between the stop end (6) and the handle (4); the second connecting portion (5) is a transition connecting groove, which facilitates spline processing of the handle (4) and the stop end (6).

7. A composite inspection tool for detecting the concentricity of internal splines and spigots according to claim 1, characterized in that: The handle (4) is a non-slip handle, with a knurled mesh pattern on the surface of the handle (4), a plane on the side surface of the handle (4), and no mesh pattern in the plane. The handle (4) is arranged between the optical axis (3) and the second connecting portion (5).

8. A composite inspection tool for detecting the concentricity of internal splines and spigots according to claim 1, characterized in that: The cross section of the handle (4) has two structural forms: circular and polygonal.

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