Measuring tool for measuring depth of small hole
By designing a measuring tool consisting of a cap, a measuring rod, and a calibration gauge, the problem of difficult hole depth measurement was solved, providing a simple and efficient measurement method that reduces labor intensity.
Patent Information
- Application Number
- CN202422912734.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing technologies are insufficient for effectively measuring the depth of pinholes, especially when the pinhole size is small, making it difficult to measure with conventional measuring tools.
A measuring tool including a cap, a measuring rod, a calibration gauge, and a spring was designed. The measuring rod is inserted into a small hole and its end face is observed relative to the end face of the cap. The depth of the small hole is then determined by combining the length of the center hole of the calibration gauge.
It enables a simple and quick measurement method, improves measurement efficiency, and reduces the labor intensity of workers.
Smart Images
Figure CN223500319U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of measuring tool technology, and in particular relates to a measuring tool for measuring the depth of a small hole. Background Technology
[0002] Measuring tools are short for physical measuring tools. They are instruments with a fixed shape used to reproduce or provide one or more known quantitative values. Classified by purpose, they are divided into standard tools, general-purpose tools, and special-purpose tools. Standard tools refer to measuring tools used as measurement or verification standards, such as gauge blocks, multi-faceted prisms, and surface roughness comparison blocks. General-purpose measuring tools, also known as universal measuring tools, generally refer to general-purpose measuring tools manufactured uniformly by measuring tool factories, such as rulers, flat plates, and angle blocks. Special-purpose tools, also known as non-standard measuring tools, refer to measuring tools specifically designed and manufactured for measuring a certain technical parameter of a workpiece.
[0003] There is a part with a small hole. Because the hole is small, it is difficult to measure using conventional measuring tools. Therefore, it is necessary to design a measuring tool to measure the depth of the hole. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a measuring tool for measuring the depth of a small hole.
[0005] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:
[0006] A measuring tool for measuring the depth of a small hole includes a cap 1, a body 2, a measuring rod 3, a calibration gauge 4, and a spring 5. The lower end of the cap 1 is threaded to the body 2, and a through hole is provided at the center of the two. The measuring rod 3 is disposed in the through hole. A stepped surface is provided in the middle of the measuring rod 3. The spring 5 is sleeved on the outer surface of the measuring rod 3. One end of the spring 5 contacts the bottom surface of the cap 1, and the other end contacts the stepped surface in the middle of the measuring rod 3. When not in use, the upper end surface of the measuring rod 3 is flush with the upper end surface of the cap 1, and the bottom of the measuring rod 3 extends out of the body 2 and is inserted into the calibration gauge 4. The bottom surface of the measuring rod 3 is flush with the lower end surface of the calibration gauge 4.
[0007] When using the device, remove the calibration gauge 4, expose the lower end of the measuring rod 3 and insert it into the small hole to be measured. By observing whether the upper end of the measuring rod is higher than the upper end of the cover, it can be determined whether the depth dimension of the small hole is qualified.
[0008] The calibration gauge is a cylinder with a central hole, the length of which is the limit depth of the hole to be measured.
[0009] Among them, the upper surface of the cover 1 is the measurement reference surface.
[0010] Spring 5 is always in a compressed state.
[0011] Both the cap 1 and the body 2 are rotating structures.
[0012] This utility model has the following advantages: simple structure, convenient and quick measurement method, and high measurement efficiency, which greatly reduces the labor intensity of workers. Attached Figure Description
[0013] Figure 1 A schematic diagram of a measuring tool for measuring the depth of a pinhole;
[0014] Figure 2 This is a schematic diagram of the cap structure;
[0015] Figure 3 This is a schematic diagram of the main structure;
[0016] Figure 4 This is a schematic diagram of the measuring rod structure;
[0017] Figure 5 This is a schematic diagram of the proofreading structure;
[0018] Figure 6 A schematic diagram illustrating the use of a measuring tool for measuring the depth of a pinhole.
[0019] In the diagram, 1-cap, 2-body, 3-measuring rod, 4-calibration gauge, 5-spring. Detailed Implementation
[0020] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.
[0021] The measuring instrument structure for measuring the depth of a small hole according to the present invention is as follows: Figure 1 As shown, it includes 1-cap, 2-body, 3-measuring rod, 4-calibration gauge, and 5-spring.
[0022] Sealing Figure 2 As shown in the figure, plane E is the measurement reference plane.
[0023] The body is like Figure 3 As shown, it is used to connect the measuring rod and the cap.
[0024] Measuring rod such Figure 4 As shown, this is used to reproduce the hole depth.
[0025] After assembling all the parts as shown in the diagram, Figure 4 The dimensions of M and N in the measuring rod are adjusted so that surface B is aligned with... Figure 2 The E-side of the cap is on the same plane, and the C-side is... Figure 5 The lower surfaces of the calibration gauge are on the same plane. After the adjustment is satisfactory, seal the seam between the cover and the body with paint.
[0026] A diagram illustrating the use of gauges for pinhole depth is shown below. Figure 5 As shown. The depth dimension is determined to be acceptable by observing whether the upper end face of the measuring rod is higher than the end face of the cap.
[0027] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and improvements without departing from the principles of the present invention, and these modifications and improvements should also be considered to fall within the protection scope of the present invention.
Claims
1. A measuring tool for measuring the depth of a pinhole, characterized in that, The device includes a cover (1), a body (2), a measuring rod (3), a calibration gauge (4), and a spring (5). The lower end of the cover (1) is threaded to the body (2), and a through hole is provided at the center of the two. The measuring rod (3) is placed in the through hole. A stepped surface is provided in the middle of the measuring rod (3). The spring (5) is sleeved on the outer surface of the measuring rod (3). One end of the spring (5) contacts the bottom surface of the cover (1), and the other end contacts the stepped surface in the middle of the measuring rod (3). When not in use, the upper end of the measuring rod (3) is flush with the upper end of the cover (1), and the bottom of the measuring rod (3) extends out of the body (2) and is inserted into the calibration gauge (4). The bottom surface of the measuring rod (3) is flush with the lower end of the calibration gauge (4).
2. The measuring tool for measuring the depth of a small hole according to claim 1, characterized in that, The calibration gauge is a cylinder with a central hole, the length of which is the limit depth of the hole to be measured.
3. The measuring tool for measuring the depth of a small hole according to claim 1, characterized in that, The upper surface of the cover is the measurement reference surface.
4. The measuring tool for measuring the depth of a small hole according to claim 1, characterized in that, The spring is always in a compressed state.
5. The measuring tool for measuring the depth of a small hole according to claim 1, characterized in that, Both the cap and the main body are rotating structures.