Detection tool for measuring position degree of threaded hole

Abstract

The utility model relates to the technical field of detection tools, in particular to a detection tool for measuring the position degree of a threaded hole. According to the technical scheme, the device comprises a detection column, two ends of which are fixedly connected with a first connection column and a second connection column respectively; the turncap is fixedly arranged at one end of the first connecting column; and the threaded connecting rod is fixedly arranged at one end of the second connecting column. According to the utility model, the position degree of the threaded hole can be measured by replacing thread teeth on the inner wall of the threaded hole with the outer diameter of the detection column, so that errors caused by direct measurement of threads in measurement are reduced, the precision and accuracy of product measurement are improved, and the service life of the probe head is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of testing tooling technology, and in particular to a testing tooling for measuring the position of threaded holes. Background Technology

[0002] In the fields of mechanical manufacturing and parts processing, accurate measurement of threaded hole position is a crucial step in ensuring product quality. A common measurement method is using a probe. The principle of probe-based threaded hole position measurement is based on a coordinate measuring system. By accurately inserting the probe into the threaded hole, the coordinate data of the threaded hole in a spatial coordinate system is obtained, and then compared with the design standard value to accurately calculate the positional deviation of the threaded hole. In practical applications, when encountering situations such as... Figure 1 When using a fixture with a small threaded hole diameter, the probe tip is too large to be easily inserted into the narrow hole for accurate measurement. This results in inaccurate measurement of the threaded hole's position. Furthermore, the sharp tooth crests inside the metal threaded hole frequently contact the probe, affecting its lifespan and increasing testing costs. Therefore, this invention proposes a fixture for measuring the position of threaded holes. Utility Model Content

[0003] The purpose of this invention is to address the problem in the background technology where the probe tip size is too large, making it difficult to insert smoothly into the narrow threaded hole for accurate detection. This results in the inability to accurately measure the position of the threaded hole, seriously affecting the accuracy and effectiveness of product quality inspection. This not only increases the defect rate but may also lead to incorrect installation of parts during subsequent product assembly, thereby increasing production and time costs. The invention proposes a testing fixture for measuring the position of threaded holes.

[0004] The technical solution of this utility model is as follows: a testing fixture for measuring the position of a threaded hole, comprising: a testing column, with a first connecting column and a second connecting column fixedly connected to its two ends respectively; a screw cap, fixedly disposed at one end of the first connecting column; and a threaded connecting rod, fixedly disposed at one end of the second connecting column.

[0005] Optionally, the outer wall of the cap is embossed.

[0006] Optionally, the first connecting post and the nut, and the second connecting post and the threaded connecting rod, respectively form a stepped structure due to differences in thickness.

[0007] Optionally, the detection column, the first connecting column, and the second connecting column are all made of high-strength aluminum alloy.

[0008] In summary, this application includes at least one of the following beneficial technical effects:

[0009] This invention rotates one end of a threaded connecting rod into the threaded hole of the tooling being tested via a nut, and, in conjunction with a probe testing device, tests the outer wall of the testing column. This allows the outer diameter of the testing column to replace the thread teeth on the inner wall of the threaded hole to measure the position of the threaded hole, thereby reducing the error caused by directly measuring the thread, improving the accuracy and precision of product measurement, and extending the service life of the probe. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a threaded hole workpiece;

[0011] Figure 2 A schematic diagram of a testing fixture for measuring the position accuracy of a threaded hole is provided.

[0012] Figure 3 for Figure 2 A schematic diagram of the side structure.

[0013] Figure label:

[0014] 1. Detection column; 2. First connecting column; 3. Second connecting column; 4. Screw cap; 5. Threaded connecting rod; 6. Embossing. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0016] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0017] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Example

[0021] like Figure 2 and Figure 3 As shown, this utility model proposes a testing fixture for measuring the position of a threaded hole, comprising: a testing column 1, with a first connecting column 2 and a second connecting column 3 fixedly connected to its two ends respectively. The first connecting column 2, the second connecting column 3, and the testing column 1 are integrally formed, so that when the workpiece is subjected to external force, the stress can be distributed more evenly, reducing stress concentration, thereby improving the strength and load-bearing capacity of the workpiece and increasing its service life; a rotating cap 4, the outer wall of which is provided with embossing 6 to increase the friction during manual rotation and make the rotation more stable, and is fixedly set at one end of the first connecting column 2; and a threaded connecting rod 5, fixedly set at one end of the second connecting column 3. The threaded connecting rod 5 can be replaced according to the size of the threaded hole of the workpiece, thereby improving the applicability of the test.

[0022] Furthermore, the first connecting post 2 and the screw cap 4, and the second connecting post 3 and the threaded connecting rod 5, respectively form a stepped structure due to their different thicknesses. The stepped structure can provide a clear positional reference for the installation of each component, ensuring that each component can be assembled accurately and without error, thus improving the efficiency and accuracy of tooling assembly. At the same time, the stepped structure can also enhance the stability of the connection. Because there is a step difference between different components, this structure can effectively disperse stress when subjected to external forces, avoiding loosening or damage to the connection due to stress concentration.

[0023] Furthermore, the detection column 1, the first connecting column 2, and the second connecting column 3 are all made of high-strength aluminum alloy, which has high strength and can withstand various external forces that may be generated during the measurement process, ensuring that the tooling will not deform due to stress during long-term use, thereby ensuring the accuracy of the measurement results.

[0024] The working principle of this embodiment is as follows: [The following text appears to be incomplete and requires further context.] Figure 1 The workpiece is placed horizontally on the inspection table, and then one end of the threaded connecting rod 5 is rotated into the threaded hole of the workpiece through the cap 4. The outer wall of the cap 4 is provided with knurling 6, which increases the friction when the cap rotates, making it easier for the operator to easily and accurately screw the threaded connecting rod into the threaded hole.

[0025] After the threaded connecting rod 5 is screwed into the threaded hole, the outer wall of the detection column 1 is inspected using a probe detection device. The projection of the element circle generated by the machine (existing technology, not described in detail here) onto the reference plane is compared with the projection of the element circle generated by the probe point inside the threaded hole onto the reference plane. This allows for easy identification of whether the threaded hole position is accurate, thereby reducing errors caused by directly measuring the thread, improving the precision and accuracy of product measurements, and extending the service life of the probe.

[0026] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A testing fixture for measuring the positional accuracy of a threaded hole, characterized in that, include: The detection column (1) has a first connecting column (2) and a second connecting column (3) fixedly connected to its two ends respectively; A rotating cap (4) is fixedly installed at one end of the first connecting post (2); The threaded connecting rod (5) is fixedly installed at one end of the second connecting post (3).

2. The inspection fixture for measuring the position accuracy of a threaded hole according to claim 1, characterized in that, The outer wall of the cap (4) is provided with embossing (6).

3. The inspection fixture for measuring the position accuracy of a threaded hole according to claim 1, characterized in that, The first connecting post (2) and the swivel cap (4), and the second connecting post (3) and the threaded connecting rod (5) form a stepped structure due to their different thicknesses.

4. The inspection fixture for measuring the position accuracy of a threaded hole according to claim 1, characterized in that, The detection column (1), the first connecting column (2), and the second connecting column (3) are all made of high-strength aluminum alloy.

Images