Tool for detecting knurling outer diameter of lead screw

Abstract

The utility model discloses a tool for detecting the knurling external diameter of a lead screw, and the tool comprises a tool body which comprises a go gauge part and a no-go gauge part. The go gauge part is provided with a go gauge bayonet and a go gauge groove connected with the go gauge bayonet; the go gauge groove is of a first U-shaped groove structure; the no-go gauge part is provided with a no-go gauge bayonet and a no-go gauge groove connected with the no-go gauge bayonet; the no-go gauge groove is of a second U-shaped groove structure. The diameter of the first U-shaped groove structure is larger than that of the second U-shaped groove structure. The go gauge part and the no-go gauge part are coaxially arranged on the tool body; the diameter of the first U-shaped groove structure is larger than the outer diameter of the knurling of the lead screw. The diameter of the second U-shaped groove structure is smaller than the knurling outer diameter of the lead screw and larger than the small outer diameter of the lead screw at the same time. The tool for detecting the knurling outer diameter of the lead screw can quickly detect the size of the knurling outer diameter of the lead screw, and ensures the product quality.

Description

Technical Field

[0001] The utility model relates to the field of bearing screw manufacturing, in particular to a tool for detecting the knurled outer diameter of a screw. Background Art

[0002] The outer diameter of the screw knurl is detected using a caliper. Due to the interference of the small outer diameter of the screw, a conventional go / no-go gauge cannot be used. During the inspection process, the caliper can only measure three or more points, and the largest point of the knurl may not be detected, resulting in the outflow of defective products.

[0003] If calipers are used for multi-point inspection, the production cycle will increase significantly, and there will be certain requirements for employee operation. If the technique is wrong, it may cause product measurement differences.

[0004] By designing a tool for quickly detecting the outer diameter of the screw knurling, the size can be quickly inspected and the product quality can be guaranteed. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a tool for detecting the outer diameter of the screw knurling.

[0006] In order to achieve the purpose of this utility model, the technical solution adopted is:

[0007] A tool for detecting the outer diameter of a screw knurling, comprising:

[0008] A tool body, the tool body comprising a through gauge portion and a stop gauge portion;

[0009] The through-gauge portion is provided with a through-gauge bayonet and a through-gauge groove connected to the through-gauge bayonet;

[0010] The through gauge groove is a first U-shaped groove structure;

[0011] The stop gauge portion is provided with a stop gauge bayonet and a stop gauge groove connected to the stop gauge bayonet;

[0012] The stop gauge groove is a second U-shaped groove structure;

[0013] The diameter of the first U-shaped groove structure is greater than the diameter of the second U-shaped groove structure;

[0014] The through gauge part and the stop gauge part are coaxially arranged on the tool body;

[0015] The diameter of the first U-shaped groove structure is larger than the outer diameter of the screw knurling;

[0016] The diameter of the second U-shaped groove structure is smaller than the outer diameter of the screw knurling and larger than the small outer diameter of the screw.

[0017] In a preferred embodiment of the present utility model, a through-gauge portion indicator is provided on the through-gauge portion of the tool body.

[0018] In a preferred embodiment of the present utility model, a stop gauge portion indicator is provided on the stop gauge portion of the tool body.

[0019] In a preferred embodiment of the present utility model, the stop gauge snap-in and the through gauge snap-in are in opposite directions.

[0020] The beneficial effects of the utility model are:

[0021] The tooling for detecting the outer diameter of the screw knurling of the utility model can quickly inspect the size of the outer diameter of the screw knurling and ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0023] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .

[0024] Figure 3 The structure of the utility model is shown in FIG. Figure 3 . DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] The existing technology uses calipers for measurement, which can only detect three points. Since the product knurling structure consists of 51 teeth, the maximum point cannot be measured, which will lead to inaccurate measured dimensions.

[0028] The commonly used go / no-go gauge cannot be used due to the interference of the small outer diameter (the small outer diameter is 10.275mm, the knurled outer diameter is 10.275, and the knurled outer diameter cannot be detected through the small outer diameter).

[0029] The utility model provides Figure 1-3 The tool for detecting the outer diameter of the knurling of a lead screw shown in the figure comprises a tool body 100 , wherein the tool body 100 comprises a through gauge portion 110 and a stop gauge portion 120 . The through gauge portion 110 and the stop gauge portion 120 are coaxially arranged on the tool body 100 .

[0030] The through-gauge portion 110 is provided with a through-gauge socket 111 and a through-gauge groove 112 connected to the through-gauge socket 111 , and the through-gauge groove 112 is a first U-shaped groove structure.

[0031] The stop gauge portion 120 is provided with a stop gauge bayonet 121 and a stop gauge groove 122 connected to the stop gauge bayonet 121.

[0032] The stop gauge groove 122 is a second U-shaped groove structure. The diameter of the first U-shaped groove structure is greater than the diameter of the second U-shaped groove structure.

[0033] The specific dimensions are as follows:

[0034] Serial number name 1 Lead Screw 2 Screw knurl outer diameter (size 10.275±0.015mm) 3 Through gauge bayonet (size 10.29mm) 4 Stop gauge bayonet (10.26mm)

[0035] The direction of the stop gauge snap-in 121 is opposite to that of the pass gauge snap-in 111 .

[0036] The diameter of the first U-shaped groove structure is larger than the knurled outer diameter 21 of the screw 20 , and the diameter of the second U-shaped groove structure is smaller than the knurled outer diameter 21 of the screw 20 and larger than the small outer diameter 22 of the screw.

[0037] A through-gauge portion indicator 113 is provided on the through-gauge portion 110 of the tool body 100 , and a no-gauge portion indicator 123 is provided on the no-gauge portion 120 of the tool body 100 .

[0038] Because of the above structure, the working principle of the utility model is:

[0039] The through gauge portion 110 requires that the knurled outer diameter 21 of the knurled screw 20 can be rotated 360°. If it can be rotated, it proves that the through gauge is qualified.

[0040] The stop gauge portion 120 is qualified as long as the knurled outer diameter 21 of the knurled screw 20 cannot pass through and the small outer diameter 22 of the screw can pass through.

[0041] Through this inspection tool, the on-site inspection can be carried out quickly to ensure the quality of the product and avoid inaccurate inspection.

[0042] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above.

[0043] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A tool for detecting the outer diameter of a screw knurling, characterized in that: include: A tool body, the tool body comprising a through gauge portion and a stop gauge portion; The through-gauge portion is provided with a through-gauge bayonet and a through-gauge groove connected to the through-gauge bayonet; The through gauge groove is a first U-shaped groove structure; The stop gauge portion is provided with a stop gauge bayonet and a stop gauge groove connected to the stop gauge bayonet; The stop gauge groove is a second U-shaped groove structure; The diameter of the first U-shaped groove structure is greater than the diameter of the second U-shaped groove structure; The through gauge part and the stop gauge part are coaxially arranged on the tool body; The diameter of the first U-shaped groove structure is larger than the outer diameter of the screw knurling; The diameter of the second U-shaped groove structure is smaller than the outer diameter of the screw knurling and larger than the small outer diameter of the screw.

2. A tool for detecting the outer diameter of the screw knurling as claimed in claim 1, characterized in that: A through-gauge portion indicator is arranged on the through-gauge portion of the tool body.

3. A tool for detecting the outer diameter of the screw knurling as claimed in claim 1, characterized in that: A stop gauge portion indicator is arranged on the stop gauge portion of the tool body.

4. A tool for detecting the outer diameter of the screw knurling as claimed in claim 1, characterized in that: The stop gauge snap-in is in the opposite direction to the through gauge snap-in.

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