A screw standard part pass-fail characteristic detection tool

Abstract

The utility model discloses a screw standard part pass stop characteristic detection frock belongs to standard part processing characteristic detection technical field. The utility model provides a screw standard part pass stop characteristic detection frock, including fixed bottom plate and a plurality of different screw standard part specifications thread ring gauge, is equipped with a plurality of installation recesses of different screw standard part specifications on fixed bottom plate, and the bottom of installation recess is provided with a plurality of positioning holes, the screw standard part specifications of thread ring gauge correspond with installation recess one to one, and the bottom of thread ring gauge is provided with a plurality of positioning shafts, and positioning shaft corresponds with positioning hole one to one, when using, through the fixed connection of connecting positioning shaft and positioning hole, thread ring gauge and fixed bottom plate can greatly shorten the finding time of measuring tool in the screw standard part detection process, reduce the risk of easy to lose of the variety of measuring tool, guarantee the smooth operation of detection process.

Description

Technical Field

[0001] This utility model relates to the field of standard parts processing feature detection technology, specifically to a tooling for detecting the go / no-go characteristics of standard screw parts. Background Technology

[0002] Standard parts are widely used in the assembly of structural components for airborne equipment. The specifications of commonly used standard parts in this field are mostly concentrated in the M2 to M8 range. The high frequency and large number of procurement batches during production result in a significant workload for incoming inspection of standard parts. If the number and specifications of screws to be inspected are large, it is necessary to find thread ring gauges, go gauges, and no-go gauges for each specification, which is labor-intensive and prone to tool loss, affecting the normal operation of the screw standard part inspection process.

[0003] Therefore, how to improve the inspection efficiency of standard screw parts has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a tooling for testing the go / no-go characteristics of standard screw parts, so as to overcome the problem of low efficiency in the existing technology when testing standard screw parts.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution: A fixture for testing the go / no-go characteristics of standard screw parts includes a fixed base plate and several thread ring gauges of different standard screw parts specifications; The base plate has several mounting grooves with different screw standard parts specifications, and the bottom of the mounting grooves has several positioning holes. The screw standard parts specifications of the thread ring gauge correspond one-to-one with the mounting grooves. The bottom of the thread ring gauge has several positioning shafts, and the positioning shafts correspond one-to-one with the positioning holes. In use, the thread ring gauge and the base plate are fixedly connected by connecting the positioning shafts and the positioning holes.

[0006] A further improvement of this utility model is that a through hole is provided at the bottom of the mounting groove, and a number of positioning holes are arranged along the circumference of the through hole.

[0007] A further improvement of this utility model is that the number of mounting grooves is 2 to 16.

[0008] A further improvement of this utility model is that the diameter of the positioning shaft is 1.5~2 mm.

[0009] A further improvement of this utility model is that the number of positioning holes is 2 to 4.

[0010] A further improvement of this utility model is that the diameter of the positioning hole is 0.02~0.2 mm larger than the diameter of the positioning shaft.

[0011] A further improvement of this utility model is that the fixed base plate is made of one of the following materials: bearing steel GCr15, CrMn, Cr2 or C2WMn.

[0012] A further improvement of this utility model is that the threaded ring gauge is made of one of the following materials: bearing steel GCr15, CrMn, Cr2 or C2WMn.

[0013] A further improvement of this utility model is that: a rust-proof layer is provided on the inner wall surface of the mounting groove, and a rust-proof layer is provided on the surface of the threaded ring gauge.

[0014] A further improvement of this utility model is that the assembly gap between the threaded ring gauge and the mounting groove is 0.1~0.15mm.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: This utility model provides a tooling for testing the go / no-go characteristics of standard screw parts, including a fixed base plate and several thread ring gauges of different standard screw parts. In use, the thread ring gauges and the fixed base plate are fixedly connected by connecting the positioning shaft and the positioning hole. This can significantly shorten the time for finding measuring tools during the testing of standard screw parts, reduce the risk of losing a variety of measuring tools, and ensure the smooth operation of the testing process.

[0016] Furthermore, by setting through holes, the thread ring gauge can be easily disassembled after the screw standard parts have been inspected. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0018] Figure 1 This is a schematic diagram of the tooling for testing the go / no-go characteristics of standard screw parts provided by this utility model.

[0019] Figure 2 The main view of the thread ring gauge in the screw standard part go / no-go characteristic testing tooling provided by this utility model.

[0020] Figure 3 A top view of the thread ring gauge in the screw standard part go / no-go characteristic testing tooling provided by this utility model.

[0021] Among them, 1 is the fixed base plate; 2 is the through hole; 3 is the mounting groove; 4 is the positioning hole; 5 is the threaded ring gauge; and 6 is the positioning shaft. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 are not intended to 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.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0030] The accompanying drawings show various structural schematic diagrams according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged and may have been omitted for clarity. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0031] See Figures 1-3 A tooling for testing the go / no-go characteristics of standard screw parts, comprising a fixed base plate 1 and several thread ring gauges 5 of different standard screw parts specifications; The fixed base plate 1 has several mounting grooves 3 with different screw standard parts specifications, and several positioning holes 4 are provided at the bottom of the mounting grooves 3; the screw standard parts specifications of the thread ring gauge 5 correspond one-to-one with the mounting grooves 3, and several positioning shafts are provided at the bottom of the thread ring gauge 5, and the positioning shafts correspond one-to-one with the positioning holes 4; in use, the thread ring gauge 5 and the fixed base plate 1 are fixedly connected by connecting the positioning shafts and the positioning holes 4.

[0032] This utility model provides a tooling for testing the go / no-go characteristics of standard screw parts, including a fixed base plate and several thread ring gauges of different standard screw parts. In use, the thread ring gauges and the fixed base plate are fixedly connected by connecting the positioning shaft and the positioning hole. This can significantly shorten the time for finding measuring tools during the testing of standard screw parts, reduce the risk of losing a variety of measuring tools, and ensure the smooth operation of the testing process.

[0033] Specifically, a through hole 2 is provided at the bottom of the mounting groove 3, and several positioning holes 4 are arranged along the circumference of the through hole 2. By providing the through hole, the thread ring gauge can be easily removed after the screw standard parts have been inspected.

[0034] Specifically, the number of mounting grooves 3 is 2 to 16.

[0035] Specifically, the diameter of the positioning shaft 6 is 1.5~2 mm.

[0036] Specifically, the number of positioning holes 4 is 2 to 4.

[0037] Specifically, the diameter of the positioning hole 4 is 0.02~0.2 mm larger than the diameter of the positioning shaft.

[0038] Specifically, the fixed base plate 1 is made of one of the following materials: bearing steel GCr15, CrMn, Cr2 or C2WMn.

[0039] Specifically, the thread ring gauge 5 is made of one of the following materials: bearing steel GCr15, CrMn, Cr2 or C2WMn.

[0040] Specifically, a rust-proof layer is provided on the inner wall surface of the mounting groove 3, and a rust-proof layer is provided on the surface of the threaded ring gauge 5.

[0041] Specifically, the assembly clearance between the threaded ring gauge 5 and the mounting groove 3 is 0.1~0.15mm.

[0042] Example 1 A fixture for testing the go / no-go characteristics of standard screw parts includes a fixed base plate 1 and a thread ring gauge 5. The fixed base plate 1 has 16 mounting grooves 3, with each pair of grooves 3 forming a group, corresponding to the go and no-go gauges of the thread ring gauge 5, respectively. Two positioning holes 4 are provided at the bottom of each mounting groove 3. The specifications of the standard screw parts for the thread ring gauge 5 are shown in Table 1 - Thread Ring Gauge 5 Type Details, and meet the requirements of MA (Thread Ring Gauge 5 Type) * B (Pitch) - 6g (Tolerance Grade). The specifications of the standard screw parts for the thread ring gauge 5 correspond one-to-one with the mounting grooves 3. Two positioning shafts are provided at the bottom of the thread ring gauge 5, and each positioning shaft corresponds one-to-one with the positioning holes 4. In use, the thread ring gauge 5 and the fixed base plate 1 are fixedly connected by connecting the positioning shafts and the positioning holes 4.

[0043] Table 1. Detailed list of 5 types of thread ring gauges

[0044] The testing fixtures provided in this embodiment are all made of one of the following materials: bearing steel GCr15, CrMn, Cr2, or C2WMn, with a Rockwell hardness value of HRC60-65 and a surface roughness value of Ra0.06. The surface is also treated with anti-rust treatment. Testing fixtures made of this material have high mechanical strength, good wear resistance, and good corrosion resistance. They are not only inexpensive but can also be used repeatedly for a long time, achieving stable testing quality.

[0045] After installing the fixed base plate 1 and the thread ring gauge 55MA*B-6g (see the list of thread ring gauge types 5), place it horizontally on the workbench. During the inspection of standard screw parts, screw the screws into the thread holes of the corresponding specification thread ring gauge 5 go gauge and no-go gauge in sequence to determine whether the go and no-go characteristics of the screws meet the technical requirements.

[0046] This utility model integrates thread ring gauges 56 of different specifications on a fixed base plate 11, forming an integrated combination of inspection fixtures. This allows a single inspection fixture to simultaneously perform rapid testing of the go / no-go characteristics of commonly used national standard parts of specifications M2, M2.5, M3, M4, M5, M6, M8, and M10, ensuring that the eight types of national standard parts commonly used in airborne products meet quality requirements.

[0047] Finally, it should be noted that the embodiments listed above are merely one or more specific manifestations of the technical solution of this utility model. Their purpose is to clearly illustrate the concept, principle, and application of this utility model through specific examples, and is by no means intended to limit the scope of protection of this utility model to these specific embodiments. In fact, the true value of this utility model lies in its proposed technical ideas and innovations, rather than its manifestations or implementation methods.

[0048] For those skilled in the art, after thoroughly reading and understanding the technical solution of this utility model, they are fully capable of making various changes, modifications, or equivalent substitutions to the specific embodiments of the utility model based on their own professional knowledge and skills. These changes may include, but are not limited to: adjusting the range of technical parameters, optimizing the algorithm flow to improve efficiency, and replacing some technical components to achieve better compatibility or reduce costs. As long as these modified technical solutions substantially retain the technical features claimed by the original utility model, that is, they can still achieve the core functions and effects of this utility model, then these changes should be considered to fall within the scope of protection of the pending claims of this utility model.

[0049] Furthermore, with the continuous progress and development of technology, new technical means and methods are constantly emerging, which provides ample space for the further improvement and perfection of this utility model. Therefore, the scope of protection of this utility model should also include reasonable and foresightful improvements and extensions based on existing technology. As long as these improvements and extensions do not deviate from the basic principles and core concept of this utility model, they should be regarded as equivalents of this utility model and are equally protected by patent rights.

Claims

1. A fixture for testing the go / no-go characteristics of standard screw parts, characterized in that, Includes a fixed base plate (1) and several threaded ring gauges (5) with different screw standard parts specifications; The base plate (1) has several mounting grooves (3) with different screw standard parts specifications, and the bottom of the mounting grooves (3) has several positioning holes (4); the screw standard parts specifications of the thread ring gauge (5) correspond one-to-one with the mounting grooves (3), and the bottom of the thread ring gauge (5) has several positioning shafts (6), which correspond one-to-one with the positioning holes (4); in use, the thread ring gauge (5) and the base plate (1) are fixedly connected by connecting the positioning shafts (6) and the positioning holes (4).

2. The fixture for testing the go / no-go characteristics of standard screw parts according to claim 1, characterized in that, The bottom of the mounting groove (3) is provided with a through hole (2), and several positioning holes (4) are arranged along the circumference of the through hole (2).

3. The fixture for testing the go / no-go characteristics of standard screw parts according to claim 1, characterized in that, The number of mounting grooves (3) is 2 to 16.

4. The fixture for testing the go / no-go characteristics of standard screw parts according to claim 1, characterized in that, The diameter of the positioning shaft (6) is 1.5~2 mm.

5. The fixture for testing the go / no-go characteristics of standard screw parts according to claim 1, characterized in that, The number of positioning holes (4) is 2 to 4.

6. A fixture for testing the go / no-go characteristics of standard screw parts according to claim 1, characterized in that, The diameter of the positioning hole (4) is 0.02~0.2 mm larger than the diameter of the positioning shaft.

7. The fixture for testing the go / no-go characteristics of standard screw parts according to claim 1, characterized in that, The fixed base plate (1) is made of one of the following materials: bearing steel GCr15, CrMn, Cr2 or C2WMn.

8. The fixture for testing the go / no-go characteristics of standard screw parts according to claim 1, characterized in that, The threaded ring gauge (5) is made of one of the following materials: bearing steel GCr15, CrMn, Cr2 or C2WMn.

9. The fixture for testing the go / no-go characteristics of standard screw parts according to claim 1, characterized in that, The inner wall surface of the mounting groove (3) is provided with an anti-rust layer, and the surface of the threaded ring gauge (5) is provided with an anti-rust layer.

10. The fixture for testing the go / no-go characteristics of standard screw parts according to claim 1, characterized in that, The assembly clearance between the threaded ring gauge (5) and the mounting groove (3) is 0.1~0.15mm.

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