Touch gauge for hole structure

Abstract

The utility model relates to the field of measuring tools, in particular to a touch measuring gauge for a hole structure, which comprises a detection piece (2) and a gauge body (1), the detection piece comprises a detection part (21) and a positioning part (22), the detection part is provided with a detection surface (211) which can be attached to a surface to be detected on the hole structure (4), the positioning part is provided with a positioning surface (221) which is matched with an inner wall surface (41) of the hole structure, and the gauge body (1) is provided with a positioning surface (221) which is matched with the inner wall surface (41) of the hole structure. Positioning the detection piece by taking the inner wall surface as a reference and enabling the detection surface to be opposite to the surface to be detected; the gauge body is used for abutting against the end face surrounding the hole structure and is provided with a judgment face (11) used for determining the relative position of the detection piece and the gauge body and judging whether the face to be detected is qualified or not by comparing the relative position with a qualification standard. According to the utility model, the inner wall surface of the hole structure is used as a high-precision reference surface, so that the positioning and the judgment on whether the surface to be detected is qualified or not can be realized without external measuring equipment, and the detection efficiency and the detection accuracy are obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring tools, and more specifically to a touch measuring gauge for hole structures. Background Technology

[0002] In industrial production, it is often necessary to chamfer parts of hole structures to meet various process requirements. For components with stringent requirements, the chamfers need to be inspected to confirm that the manufacturing precision and specifications of the chamfers meet the process requirements, thereby preventing problems caused by the chamfers during assembly or even in actual use.

[0003] In chamfer inspection, a coordinate measuring machine (CMM) can be used for measurement. This requires acquiring 3D data of the chamfer using a probe and creating a model, then using software to determine if the chamfer meets specifications. However, CMMs are large measuring devices, time-consuming, and require a large area, making them unsuitable for batch inspection. To avoid these problems, existing technologies use touch gauges for chamfer inspection. These gauges use a precisely manufactured contact surface on the bottom to contact the chamfer, and the degree of fit between the contact surface and the chamfer indicates whether the chamfer is up to standard. Touch gauges are easy to operate, can be handheld by workers, and offer fast inspection speeds, making them suitable for batch inspection of chamfers and thus widely used.

[0004] However, existing touch gauges require a sufficiently high-precision surface as a reference plane for calibration; otherwise, the accuracy of the detection results cannot be guaranteed. Therefore, obtaining a sufficiently high-precision reference plane is particularly crucial when measuring high-precision chamfers. In some special cases, the machining precision of the surface around the hole is lower than that of the hole and the chamfer inside the hole, making it difficult for existing touch gauges to obtain a sufficiently high-precision reference plane, thus preventing the touch gauge from accurately measuring the chamfer.

[0005] Therefore, how to provide a touch gauge capable of obtaining a high-precision reference surface is an urgent problem to be solved. Utility Model Content

[0006] This invention aims to provide a touch measurement gauge with high detection accuracy. In practice, the inventors creatively proposed that, due to the relatively higher machining precision of holes, the inner surface of the hole can be used as a reference surface, thereby ensuring the measurement accuracy of the touch gauge.

[0007] To achieve the above objectives, this utility model provides a touch measurement gauge for hole structures, comprising:

[0008] The testing component includes a testing section and a positioning section. The testing section has a testing surface for contacting the surface to be tested of the hole structure, and the positioning section has a positioning surface that can mate with the inner wall surface of the hole structure, so that the testing component can be positioned with the inner wall surface as a reference and the testing surface faces the surface to be tested.

[0009] The gauge body is configured to abut against the end face of the surrounding hole structure of the workpiece to be tested, and has a determination surface for determining the relative position of the test piece with respect to the gauge body along the axial direction of the hole structure.

[0010] In some embodiments, the gauge body has a through hole extending axially along the hole structure, and the detection element further includes an indicator rod extending from the side of the detection part away from the positioning part and cooperating with the through hole. The determination surface is located on the top surface of the gauge body so that the relative position of the detection element with respect to the gauge body along the axial direction of the hole structure can be determined by the determination surface and the indicator rod.

[0011] In some embodiments, the determination surface includes a first reference surface and a second reference surface arranged in a stepped manner, wherein the second reference surface is lower than the first reference surface, and a through hole is provided on the center line of the gauge body to be adjacent to the first reference surface and the second reference surface, respectively.

[0012] In some embodiments, the gauge body further includes a receiving groove disposed at the bottom of the gauge body, wherein the height of the detection part along the axial direction of the hole structure is less than the depth of the receiving groove, and the length of the receiving groove is greater than the length of the detection part, so as to allow the gauge body to abut against the end face of the surrounding hole structure of the workpiece to be tested.

[0013] In some embodiments, the detection part is fitted to the side wall of the receiving groove so as to define the relative position of the detection part and the gauge body in a direction perpendicular to the side wall.

[0014] In some embodiments, the gauge body has an abutment portion on the end face of the surrounding hole structure of the workpiece to be tested, the abutment portion having an arcuate sidewall surface for cooperating with a process pressure plate positioned and mounted on the workpiece to be tested, and a receiving groove is formed on the bottom surface of the abutment portion.

[0015] In some embodiments, the gauge body also includes a gripping portion disposed on the side of the gauge body, so that the gauge body can be moved by gripping the gripping portion.

[0016] In some embodiments, the detection surface is formed as an external chamfer shape that can mate with the standard internal chamfer of the hole structure.

[0017] In some embodiments, the detection element is configured to be rotatable about the central axis of the hole structure, the detection portion is configured as a cylindrical section having at least a partial circumferential surface, and the positioning portion is formed as a cylinder or a cylindrical section having at least a partial circumferential surface.

[0018] In some embodiments, the bottom of the positioning part is provided with a chamfer for guiding the positioning part into the hole structure.

[0019] The touch measurement gauge provided by this utility model can be used in hole structures with process pressure plates installed on top. When there is no usable plane around the hole structure, the positioning part can use the high-precision inner wall surface of the hole structure to be tested as a reference surface, thereby ensuring the measurement accuracy of the touch measurement gauge.

[0020] Specifically, when using a touch measurement gauge, the gauge body and the detection piece are combined, and the touch measurement gauge is moved downward along the axial direction of the hole structure, so that the gauge body passes through the hole formed on the process pressure plate that is coaxial with the hole structure, until the bottom end of the gauge body abuts against the end face surrounding the hole structure. Then, the detection piece is lowered along the axial direction of the hole structure, passes through the process pressure plate, until the detection surface on the detection piece matches the surface to be detected.

[0021] When the inspection surface fully mates with the qualified inspection surface, the relative positional relationship between the inspection piece and the judgment surface is recorded as the acceptance criterion. For inspection surfaces with machining deviations, they cannot fully mate with the inspection surface, causing the inspection surface to be positioned higher or lower than the inspection surface. This alters the relative positional relationship between the inspection piece and the judgment surface, deviating from the acceptance criterion. Therefore, by observing whether the relative positional relationship between the inspection piece and the judgment surface matches the acceptance criterion, the acceptance of the inspection surface can be determined.

[0022] Furthermore, when the process requirements of the surface to be inspected are within a given tolerance range, the difference between the relative positional relationship between the inspection piece and the judgment surface and the qualified datum can be used to determine whether the surface to be inspected falls within the designed tolerance range, thereby determining whether the surface to be inspected is qualified.

[0023] The positioning part in the testing component is located at the bottom. When the testing component is lowered along the axial direction of the hole structure, the positioning part first extends into the hole to be tested. The positioning surface engages with the inner wall surface of the hole structure, using the inner wall surface as a reference surface to create a radial constraint on the testing component, allowing it to move only in the vertical direction. Through the limiting effect of the positioning part, the testing component is positioned so that the testing surface on the positioning part just falls on the surface to be tested, thus avoiding testing errors caused by the testing surface deviating from the surface to be tested.

[0024] Through the above steps, the measuring touch gauge provided by this utility model can use the high-precision inner wall surface inside the hole as a reference surface to accurately determine whether the surface to be tested is qualified. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of one embodiment provided in this application;

[0027] Figure 2 yes Figure 1 A partial enlarged view of the embodiment provided in the document;

[0028] Figure 3 This is a side view structural diagram of an embodiment provided in this application.

[0029] Figure 4 This is a schematic diagram of the overall structure of the gauge body in one embodiment provided in this application;

[0030] Figure 5 This is a schematic diagram of the overall structure of the detection element in one embodiment provided in this application;

[0031] Figure 6 This is a cross-sectional structural diagram of one embodiment provided in this application;

[0032] Figure 7 This is a schematic diagram of the overall structure of another embodiment provided in this application.

[0033] Explanation of reference numerals in the attached figures

[0034] 1. Gauge body; 11. Judgment surface; 111. First reference surface; 112. Second reference surface; 12. Grip part; 13. Through hole; 14. Receiving groove; 15. Abutment part; 2. Detection piece; 21. Detection part; 211. Detection surface; 22. Positioning part; 221. Positioning surface; 23. Indicator rod; 3. Process pressure plate; 4. Hole structure; 41. Inner wall surface. Detailed Implementation

[0035] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this utility model by way of example, but should not be used to limit the scope of this utility model. This utility model can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0036] These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0037] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, 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. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] Furthermore, the terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0039] It should also be noted that, in the description of this utility model, 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0040] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0041] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0042] To achieve the above objectives, this utility model provides a touch measurement gauge for hole structures, such as... Figures 1-6 As shown, it includes:

[0043] The detection component 2 includes a detection part 21 and a positioning part 22. The detection part 21 has a detection surface 211 for contacting the surface to be detected of the hole structure 4. The positioning part 22 has a positioning surface 221 that can cooperate with the inner wall surface 41 of the hole structure 4, so that the detection component 2 can be positioned with the inner wall surface 41 as a reference and the detection surface 211 faces the surface to be detected.

[0044] The gauge body 1 is configured to abut against the end face of the surrounding hole structure 4 of the workpiece to be tested, and has a determination surface 11 for determining the relative position of the test piece 2 with respect to the gauge body 1 along the axial direction of the hole structure 4.

[0045] The surface to be inspected can be any process surface that needs to be inspected and can be applied to the hole structure 4, such as a chamfer, fillet, or step surface set at one end of the hole. The inspection surface 211 is formed into a shape that can fully match the design shape of the surface to be inspected so that the surface to be inspected can be inspected.

[0046] The detection surface 211 and the positioning surface 221 are set to have the same or higher manufacturing precision as the surface to be detected, so that when they mate with the surface on the hole structure 4, the detection results will not be incorrect due to low precision.

[0047] Provided that they can respectively mate with the surface to be tested and the inner wall surface 41, the testing surface 211 and the positioning surface 221 can be configured to have a complete arc structure or only have a partial arc.

[0048] The touch measurement gauge provided by this utility model can be used in a hole structure 4 on which a process pressure plate 3 is installed. When the area around the end face of the hole structure 4 is insufficient to serve as a reference surface (the hole diameter on the process pressure plate 3 is slightly larger than the maximum diameter at the chamfer position of the hole structure 4), the touch measurement gauge of this utility model can use the high-precision inner wall surface 41 in the hole structure 4 as a reference surface through the positioning part 22, thereby ensuring the measurement accuracy of the touch measurement gauge.

[0049] Specifically, when using a touch measurement gauge, the gauge body 1 and the detection element 2 are combined, and the touch measurement gauge is moved downward along the axial direction of the hole structure 4, so that the gauge body 1 passes through the hole formed on the process pressure plate 3 that is coaxial with the hole structure 4, until the bottom end abutting part 15 of the gauge body 1 abuts against the end face surrounding the hole structure 4. Then, the detection element 2 is lowered along the axial direction of the hole structure 4, passes through the process pressure plate 3, until the detection surface 211 on the detection element 2 matches the surface to be detected.

[0050] When the inspection surface 211 fully mates with a qualified surface to be inspected, the relative positional relationship between the inspection piece 2 and the judgment surface 11 is recorded as the qualification criterion. For a surface to be inspected that has a machining deviation, it cannot fully mate with the inspection surface 211, causing the inspection surface 211 to be positioned higher or lower than the surface to be inspected. This alters the relative positional relationship between the inspection piece 2 and the judgment surface 11, deviating from the qualification criterion. Therefore, by observing whether the relative positional relationship between the inspection piece 2 and the judgment surface 11 is consistent with the qualification criterion, it can be determined whether the surface to be inspected is qualified.

[0051] Furthermore, when the process requirements of the surface to be inspected are within a given tolerance range, the difference between the relative positional relationship between the inspection piece 2 and the judgment surface 11 and the qualified datum can be measured to determine whether the surface to be inspected falls within the designed tolerance range, thereby determining whether the surface to be inspected is qualified.

[0052] The positioning part 22 in the detection component 2 is disposed at the bottom of the detection component 2. When the detection component 2 is lowered along the axial direction of the hole structure 4, the positioning part 22 first extends into the hole structure 4, and cooperates with the inner wall surface 41 of the hole structure 4 through the positioning surface 221, so that the inner wall surface 41 is used as a reference surface to form a radial constraint on the detection component 2, so that the detection component 2 can only move in the vertical direction. Through the limiting of the positioning part 22, the detection component 2 is limited so that the detection surface 211 on the detection part 21 can just fall on the surface to be detected, thereby avoiding the detection error caused by the detection surface 211 deviating from the surface to be detected.

[0053] Through the above steps, the measuring touch gauge provided by this utility model can use the inner wall surface 41 of the high-precision surface inside the hole as a reference surface, thereby accurately determining whether the surface to be tested is qualified.

[0054] In some embodiments, such as Figure 1 and Figures 3-6 As shown, the gauge body 1 has a through hole 13 extending through the hole structure along the axial direction. The detection element 2 also includes an indicator rod 23 extending from the side of the detection part 21 away from the positioning part 22 and cooperating with the through hole 13. The judgment surface 11 is located on the top surface of the gauge body 1 so that the relative position of the detection element 2 with respect to the gauge body 1 along the axial direction of the hole structure 4 can be determined by the judgment surface 11 and the indicator rod 23.

[0055] When using the touch measuring gauge provided in this embodiment for detection, the gauge body 1 is abutted against the end face surrounding the hole structure 4 through the abutting portion 15. During the process of the detecting member 2 being lowered axially in the hole structure 4, the indicating rod 23 passes through the through hole 13 of the gauge body 1. Since the through hole 13 penetrates along the axial direction of the hole structure 4, the indicating rod 23 can smoothly pass through the through hole 13 and extend out in the top surface area of the gauge body 1. When the detection surface 211 contacts or mates with the surface to be detected, the positional relationship between the indicating rod 23 and the determination surface 11 can be visually observed or measured. Specifically, by the height of the top end of the indicating rod 23 exposed from the determination surface 11 or the relative position with the determination surface 11, the positional change of the detecting member 2 relative to the gauge body 1 in the axial direction can be determined. If the position of the indicating rod 23 and the determination surface 11 corresponds to the qualified reference value, it indicates that the surface to be detected meets the processing requirements; if it deviates, it indicates that there are processing errors on the surface to be detected.

[0056] By setting the matching structure between the indicating rod 23 and the through hole 13, not only can the guiding of the detecting member 2 during the axial movement be achieved, but also the chamfer detection can be quickly and accurately completed through a simple visual comparison method, avoiding the use of complex measuring equipment, improving the detection efficiency, and being applicable to the rapid chamfer detection in large-scale production scenarios.

[0057] In some embodiments, scale marks for indicating the qualified reference can be provided on the determination surface 11. By comparing the scale marks, the relationship between the top end of the indicating rod 23 and the qualified reference can be quickly judged, so as to quickly judge whether the surface to be detected is qualified.

[0058] In some embodiments, as Figure 2 shown, the determination surface 11 includes a first reference surface 111 and a second reference surface 112 arranged in a stepped manner, where the second reference surface 112 is lower than the first reference surface 111, and the through hole 13 is provided on the center line of the gauge body 1 and is adjacent to the first reference surface 111 and the second reference surface 112 respectively.

[0059] When using this touch measuring gauge for chamfer detection and the detection surface 211 is in contact with the surface to be detected, the indicating rod 23 passes through the through hole 13, and its top end extends out from the through hole 13. There is a height difference between the first reference surface 111 and the second reference surface 112, and this height difference can be set as the tolerance of the surface to be detected. Therefore, when the top end of the indicating rod 23 is below the first reference surface 111 and above the second reference surface 112, it indicates that the height of the surface to be detected falls between the lower tolerance limit and the upper tolerance limit and is judged as qualified; if the top end of the indicating rod 23 exceeds the plane of the first reference surface 111 or is lower than the plane of the second reference surface 112, it indicates that the manufacturing error of the surface to be detected exceeds the tolerance range and is judged as unqualified. Therefore, by observing the positional relationship between the top surface of the indicating rod 23 and the first reference surface 111 and the second reference surface 112, it can be judged whether the surface to be detected is qualified.

[0060] The first reference surface 111 and the second reference surface 112, as described above, allow operators to determine whether the surface to be inspected meets tolerance requirements by touching the indicator rod 23 extending from the through hole 13 on the judgment surface 11. Operators can quickly determine the positional relationship between the indicator rod 23 and the first or second reference surface 111 by placing their fingers in the gap between the indicator rod 23 and the first or second reference surface 112, thus quickly completing the acceptance judgment without the need for external calipers or complex measuring equipment. Simultaneously, operators can also visually determine the positional relationship between the indicator rod 23 and the first or second reference surface 111, thereby quickly completing the judgment of the surface to be inspected.

[0061] In some embodiments, such as Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the gauge body 1 also includes a receiving groove 14 disposed at the bottom of the gauge body 1. The height of the detection part 21 along the axial direction of the hole structure 4 is less than the depth of the receiving groove 14, and the length of the receiving groove 14 is greater than the length of the detection part 21, so as to allow the gauge body 1 to abut against the end face of the surrounding hole structure 4 of the workpiece to be measured.

[0062] When using this touch measurement gauge, if the gauge body 1 cannot be stably placed or fixed in a certain position, the position of the judgment surface 11 on it cannot be fixed either, which will lead to judgment errors. By providing a receiving groove 14 at the bottom of the gauge body 1, the gauge body 1 can contact the aforementioned end face, while the detection part 21 and the detection surface 211 on the detection part 21 can contact the surface to be detected. By contacting the end face of the surrounding hole structure 4 and using this end face as support, a stable judgment surface 11 can be obtained at the bottom of the gauge body 1, thereby stabilizing the positional relationship between the indicator rod 23 on the detection element 2 and the judgment surface 11, thus enabling accurate measurement of whether the surface to be detected is qualified.

[0063] In some embodiments, such as Figure 1 , Figure 3 and Figure 6 As shown, the detection section 21 is attached to the side wall of the receiving groove 14 so as to define the relative position of the detection section 21 and the gauge body 1 in a direction perpendicular to the side wall.

[0064] The receiving groove 14 can accommodate the detection part 21 and constrain the detection part 21 in the radial direction, thereby constraining the detection member 2 in the radial direction, so that the detection member 2 can only reciprocate in the direction of the central axis of the hole structure 4, thereby preventing the detection surface 211 from tilting due to the tilt of the detection member 2, which would lead to detection errors.

[0065] In some embodiments, such as Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the gauge body 1 has an abutment portion 15 on the end face of the surrounding hole structure of the workpiece to be tested. The abutment portion 15 has an arcuate side wall surface for cooperating with the process pressure plate 3 positioned and installed on the workpiece to be tested. A receiving groove 14 is formed on the bottom surface of the abutment portion 15.

[0066] The abutment part 15, as configured in this way, can radially limit the gauge body 1 when it is inserted into the hole of the process pressure plate 3, thereby automatically correcting the coaxiality of the gauge body 1, so that the through hole 13 in the gauge body 1 is precisely aligned with the central axis of the hole structure 4, thereby ensuring that the central axis of the detection piece 2 in the through hole 13 is precisely aligned with the central axis of the hole structure 4.

[0067] In some embodiments, the abutment portion 15 on the gauge body 1 is configured with a diameter smaller than the hole formed by the process pressure plate 3 and larger than the maximum diameter of the surface to be inspected.

[0068] When the surface to be inspected is configured as an axisymmetric structure about the central axis of the hole structure 4, for example, when the surface to be inspected is a chamfer on the hole structure 4, the inspection surface 211 will be limited by the surface to be inspected when it mates with the surface to be inspected, and the central axis of the inspection piece 2 will coincide with the central structure of the hole structure 4, so that the inspection piece 2 does not need to be limited by the abutment part 15 and the through hole 13. In this case, the abutment part 15, which is configured with the above dimensions, can facilitate the gauge body 1 to quickly extend into the hole formed in the process pressure plate 3. At the same time, the diameter of the abutment part 1 is larger than the maximum diameter of the surface to be inspected, which ensures that the gauge body 1 will not fall on the surface to be inspected, but will be placed on the end face surrounding the hole structure 4. Furthermore, the arcuate side wall of the abutment part 15 configured in this way can also partially abut against the inner wall of the hole formed in the process pressure plate 3, so as to guide the gauge body 1 during the extension process.

[0069] In some embodiments, such as Figure 1 and Figure 4 As shown, the gauge body 1 also includes a gripping part 12 disposed on the side of the gauge body 1, so that the gauge body 1 can be moved by gripping the gripping part 12.

[0070] The gripping part 12 extends along the side of the gauge body 1, forming an ergonomic grip shape. It can be configured as a raised surface with textured surfaces or finger grooves, such as... Figure 1 As shown, the gripping part 12 is designed for easy one-handed, stable gripping by the operator. It can be integrally molded with the gauge body 1, or it can be a detachable rubber or plastic kit that engages with the side of the gauge body 1 via slots or threads, ensuring both stability and ease of replacement and cleaning. Furthermore, the gripping part 12 should be located on the side wall area outside the through hole 13 and the judgment surface 11, so that the palm or fingers do not interfere with the protrusion of the indicator rod 23 and the judgment reading during operation, while also allowing the worker to easily operate the touch measuring gauge from different positions.

[0071] In some embodiments, such as Figure 1 , Figure 5 and Figure 6 As shown, the detection surface 211 is formed into an external chamfer shape that can mate with the standard internal chamfer of the hole structure 4.

[0072] By forming an external chamfer structure that can mate with a standard internal chamfer, the inspection surface 211 can fully mate with a qualified inspection surface when in contact with it, and will not fully mate with a non-qualified inspection surface when in contact with it, thus being stuck at a higher or lower position. The mate state between the inspection surface 211 and the inspection surface can be reflected by the indicator rod 23 as the positional relationship between the indicator rod 23 and the judgment surface 11, thereby determining whether the inspection surface is qualified or not through the judgment surface 11 and the indicator rod 23.

[0073] In some embodiments, such as Figure 7 As shown, the detection element 2 is configured to be able to rotate about the central axis of the hole structure 4, the detection part 21 is configured as a cylindrical section with at least a partial circumferential surface, and the positioning part 22 is formed as a cylinder or a cylindrical section with at least a partial circumferential surface.

[0074] By slightly lifting and rotating the inspection piece 2 during use, different positions on the surface to be inspected in the circumferential direction can be detected without affecting the inspection range of the inspection piece 2. Furthermore, when part of the surface to be inspected is qualified while part is unqualified, the position of the unqualified part and the qualified part on the surface to be inspected can be identified by rotating the inspection piece 2 for segmented inspection.

[0075] Meanwhile, the cylindrical section shape uses less material and is lighter, saving raw materials and reducing costs while also making it easier for operators to use. The smaller contact area between the cylindrical surface and the inner wall 41 of the hole effectively reduces frictional resistance, making the test piece move up and down and rotate more smoothly, reducing wear and the risk of jamming.

[0076] In some embodiments, such as Figure 1 and Figure 5 As shown, the bottom of the positioning part 22 is provided with a chamfer for guiding the positioning part 22 into the hole structure 4.

[0077] By chamfering the bottom of the positioning part 22, the positioning part 22 can be guided to extend into the hole structure 4, thereby helping the operator to smoothly align the positioning part 22 with the hole structure 4 and improving the measurement efficiency when measuring the internal structure of multiple hole structures 4 in batches.

[0078] In practical use, the gauge body 1 of the touch measuring gauge is first placed against the end face of the surrounding hole structure 4. Then, the detection element 2, along with the indicator rod 23, is lowered along the axial direction of the hole structure 4, so that the detection surface 211 is in contact with the surface to be detected and the positioning part 22 is in contact with the inner wall surface 41. Subsequently, by visually or by touch, the position of the top of the indicator rod 23 relative to the stepped first reference surface 111 and the second reference surface 112 can be compared to quickly determine whether the surface to be detected is qualified. This utility model has a simple structure and a high degree of integration. It can determine whether the surface to be detected is qualified without external measuring equipment, which not only ensures the stability and repeatability of the measurement process, but also greatly improves the efficiency and reliability of on-site batch testing.

[0079] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0080] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A touch measurement gauge for hole structures, characterized in that, include: The detection component (2) includes a detection part (21) and a positioning part (22), wherein the detection part (21) is formed with a detection surface (211) for contacting the surface to be detected of the hole structure (4), and the positioning part (22) is formed with a positioning surface (221) that can cooperate with the inner wall surface (41) of the hole structure (4), so that the detection component (2) can be positioned with the inner wall surface (41) as a reference and the detection surface (211) is facing the surface to be detected; The gauge body (1) is configured to abut against the end face of the workpiece to be tested surrounding the hole structure (4) and has a determination surface (11) for determining the relative position of the test piece (2) with respect to the gauge body (1) along the axial direction of the hole structure (4).

2. The touch measurement gauge for hole structures according to claim 1, characterized in that, The gauge body (1) has a through hole (13) extending through the hole structure along the axial direction. The detection element (2) also includes an indicator rod (23) extending from the side of the detection part (21) away from the positioning part (22) and cooperating with the through hole (13). The determination surface (11) is located on the top surface of the gauge body (1) so that the relative position of the detection element (2) with the gauge body (1) along the axial direction of the hole structure (4) can be determined by the determination surface (11) and the indicator rod (23).

3. The touch measurement gauge for hole structures according to claim 2, characterized in that, The determination surface (11) includes a first reference surface (111) and a second reference surface (112) arranged in a stepped manner, wherein the second reference surface (112) is lower than the first reference surface (111), and the through hole (13) is provided on the center line of the gauge body (1) to be adjacent to the first reference surface (111) and the second reference surface (112) respectively.

4. The touch measurement gauge for hole structures according to claim 1, characterized in that, The gauge body (1) further includes a receiving groove (14) disposed at the bottom of the gauge body (1). The height of the detection part (21) along the axial direction of the hole structure (4) is less than the depth of the receiving groove (14), and the length of the receiving groove (14) is greater than the length of the detection part (21), so as to allow the gauge body (1) to abut against the end face of the workpiece to be tested surrounding the hole structure (4).

5. The touch measurement gauge for hole structures according to claim 4, characterized in that, The detection part (21) is attached to the side wall of the receiving groove (14) so ​​as to define the relative position of the detection part (21) and the gauge body (1) in a direction perpendicular to the side wall.

6. The touch measurement gauge for hole structures according to claim 4, characterized in that, The gauge body (1) has an abutment portion (15) on the end face of the hole structure surrounding the workpiece to be tested. The abutment portion (15) has an arcuate side wall for cooperating with the process pressure plate (3) positioned and installed on the workpiece to be tested. The receiving groove (14) is formed on the bottom surface of the abutment portion (15).

7. The touch measurement gauge for hole structures according to claim 1, characterized in that, The gauge body (1) also includes a gripping part (12) disposed on the side of the gauge body (1) so that the gauge body (1) can be moved by gripping the gripping part (12).

8. The touch measurement gauge for hole structures according to claim 1, characterized in that, The detection surface (211) is formed into an external chamfer shape that can engage with the standard internal chamfer of the hole structure (4).

9. The touch measurement gauge for hole structures according to claim 1, characterized in that, The detection element (2) is configured to be rotatable about the central axis of the hole structure (4), the detection part (21) is configured as a cylindrical section with at least a partial circumferential surface, and the positioning part (22) is formed as a cylinder or a cylindrical section with at least a partial circumferential surface.

10. The touch measurement gauge for hole structures according to claim 1, characterized in that, The bottom of the positioning part (22) is provided with a chamfer for guiding the positioning part (22) into the hole structure (4).

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