Internal spline detection device

Abstract

The utility model relates to the technical field of internal spline rod spacing detection, in particular to an internal spline detection device, which comprises a detector body and a detection head arranged on the detector body, and a plurality of groups of rod spacing detection contacts with different horizontal heights are arranged on the periphery of the detection head in a surrounding manner. And each group of rod spacing detection contacts comprises two rod spacing detection contacts which are distributed on two radial sides of the detection head. According to the utility model, through a plurality of groups of spacing detection contacts which are arranged in a surrounding manner at different heights, the rod spacing at different height positions can be obtained, and whether the taper and ellipse phenomena exist in the internal spline can be known through comparison of the rod spacing at each position, so that the detection is more accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of internal spline detection, in particular to an internal spline detection device. Background Art

[0002] The star sleeve will produce uncontrollable micro deformation after heat treatment. In order to ensure that the product's press-in force is qualified after production, it is necessary to detect the internal spline rod spacing. The detection tooling used is, for example: an internal spline M value inspection device disclosed in Patent No. 2022217194061, an internal spline rod spacing rapid measurement device disclosed in Patent No. 2023220185289, etc.;

[0003] The problem with this type of detection tooling is that there is only one set of rod spacing detection contacts relatively distributed on both sides of the detection head. It is impossible to detect when the tooth grooves of the internal spline are arranged in an elliptical trajectory. In addition, it is impossible to detect when the top and bottom sizes of the internal spline are different and there is a certain taper, or the sizes of the middle position and the two end positions are different. Summary of the invention

[0004] The purpose of the utility model is to provide an internal spline detection device to address the defects of the prior art. The device detects contacts by means of multiple groups of rods arranged at different heights, so that the detection is more accurate and reliable, and it can more effectively identify whether the internal spline has elliptical or tapered phenomena.

[0005] The technical solution of the utility model is: an internal spline detection device, including a detector body and a detection head installed thereon, wherein at least three groups of spacing detection contacts with different horizontal heights are arranged around the outer periphery of the detection head, and each group of rod spacing detection contacts is two distributed on both sides of the radial direction of the detection head.

[0006] Preferably, when the detection contacts are projected onto the same plane, all the rod spacing detection contacts are arranged at equal angles around the axis of the detection head as the center.

[0007] Preferably, when the detection contacts are projected onto the same plane, all the rod spacing detection contacts are arranged in a spaced manner around the axis of the detection head as the center.

[0008] Preferably, the detection head has a spline rod structure.

[0009] Preferably, the rod spacing detection contacts are in three groups, and are arranged in sequence from low to high along the periphery of the detection head.

[0010] Preferably, the rod spacing detection contact is located in the middle of the convex teeth of the detection head.

[0011] The rod spacing detection contacts are connected to a computer, and the computer is used to process and analyze detection data of the rod spacing detection contacts.

[0012] Compared with the prior art, the utility model has the following advantages: the utility model can obtain the rod spacing at each position through multiple groups of rod spacing detection contacts arranged in a circle at different heights, and then by comparing the rod spacing at each position, it can be understood whether the internal spline has a taper or an elliptical phenomenon, and the detection is more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of three sets of rod spacing detection contacts projected onto the same plane;

[0015] In the figure: 1. detection head, 2. rod spacing detection contact, 3. low rod spacing detection contact a, 4. middle rod spacing detection contact a, 5. high rod spacing detection contact a, 6. low rod spacing detection contact b, 7. middle rod spacing detection contact b, 8. high rod spacing detection contact b. DETAILED DESCRIPTION

[0016] The utility model is further described below with reference to the accompanying drawings and embodiments. Example 1

[0017] like Figure 1 As shown, an internal spline detection device, the detection head 1 is a spline rod structure, and three groups of rod spacing detection contacts 2 are arranged around the outer periphery of the detection head 1. The three groups of rod spacing detection contacts 2 are divided into three horizontal height differences of low, middle and high positions, and are arranged in sequence from low to high. Each group of spacing detection contacts 2 is two distributed on both sides of the radial direction of the detection head 1.

[0018] like Figure 2 As shown, when all the detection contacts are projected onto the same plane, all the rod spacing detection contacts 2 are arranged around the axis of the detection head 1 at equal angles;

[0019] Specifically, the low-position rod spacing detection contacts a3, the middle-position rod spacing detection contacts a4, the high-position rod spacing detection contacts a5, the low-position rod spacing detection contacts b6, the middle-position rod spacing detection contacts b7, and the high-position rod spacing detection contacts b8 are arranged in a circle with equal spacing, and the spacing angle is 60 degrees.

[0020] In addition, due to the different numbers of convex teeth on the outer side of the detection head 1, some teeth cannot be arranged at equal angles around all the rod spacing detection contacts 2. At this time, the group of rod spacing detection contacts 2 can be distributed on the adjacent convex teeth arranged at equal angles, so that each rod spacing detection contact 2 is distributed in the middle position of the convex teeth of the detection head 1.

[0021] When in use, the internal spline detection device 1 is installed on the currently used detector, and then each rod spacing detection contact 2 is connected to the detector. When testing, the star-shaped sleeve internal spline shaft sleeve is mounted on the detection head 1, and three sets of rod spacing detection contacts 2 are used to respectively detect the rod spacing data of the low position, middle position and high position of the internal spline;

[0022] According to the rod spacing data at different heights, determine whether the internal spline has taper or ellipse;

[0023] By using three sets of circumferentially arranged rod spacing detection contacts 2, the rod spacing at different radial positions can also be determined. By comparing the rod spacing at each position, it is possible to analyze whether the tooth grooves in the internal spline are arranged and distributed according to a circular trajectory, thereby avoiding the phenomenon of excessive star sleeve pressing force. Example 2

[0024] This embodiment is optimized based on the above embodiment, specifically:

[0025] In Example 1, three groups of rod spacing detection contacts 2 are used to detect three groups of data at low, middle and high positions, while this embodiment can use more than three groups of rod spacing detection contacts 2 for detection, and multiple groups of spacing detection contacts 2 are also arranged in a circular manner from low to high.

[0026] By increasing the arrangement density of the rod spacing detection contacts 2 and increasing the amount of spacing data collected at different positions, it is more helpful to analyze the shape and size of the internal spline and further avoid excessive pressing force when pressing the product.

[0027] The present invention is not limited to the above-mentioned implementation modes. Within the knowledge scope of those skilled in the art, various changes can be made without departing from the purpose of the present invention. The changed contents still belong to the protection scope of the present invention.

Claims

1. An internal spline detection device, comprising a detector body and a detection head mounted thereon, characterized in that: A plurality of groups of rod spacing detection contacts with different horizontal heights are arranged around the outer periphery of the detection head, and each group of rod spacing detection contacts includes two contacts distributed on both sides of the detection head in a radial direction.

2. An internal spline detection device according to claim 1, characterized in that: When the detection contacts are projected onto the same plane, all the rod spacing detection contacts are arranged around the detection head axis at equal angles and intervals.

3. An internal spline detection device according to claim 1, characterized in that: When the detection contacts are projected onto the same plane, all the rod spacing detection contacts are arranged in an interval around the detection head axis as the center.

4. An internal spline detection device according to claim 1, characterized in that: The detection head is in a spline rod structure.

5. An internal spline detection device according to claim 1, characterized in that: The rod spacing detection contacts are in three groups and are arranged in sequence from low to high along the periphery of the detection head.

6. An internal spline detection device according to claim 1, characterized in that: The rod spacing detection contact is located in the middle of the convex teeth of the detection head.

7. An internal spline detection device according to claim 1, characterized in that: The rod spacing detection contacts are connected to a computer, and the computer is used to process and analyze detection data of the rod spacing detection contacts.

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