Hole position degree detection pin assembly, measurement tool and application

Abstract

The invention relates to a hole position degree detection pin assembly, a measurement tool and application. The hole position degree detection pin assembly comprises an inner shaft which is provided with indicating parts which are symmetrical to each other; a detection pin mounted on one end portion of the inner shaft; the inner shaft is sleeved with the sleeve, a notch is formed in the sleeve in the radial direction, symmetrical scales are arranged on the two sides of the notch located at the end of the sleeve, and measurement of the hole position degree of the part is achieved through matched reading of the indicating part and the scales. The invention further provides a hole position degree measuring tool which comprises the hole position degree detecting pin assembly and a detecting tool. The invention further provides application of the hole position degree measuring tool in detecting the hole position degree and the hole center position degree of the vehicle part. According to the invention, the problems of low detection precision and low detection efficiency of a traditional measurement method are solved, and seamless connection with an existing automobile part detection tool is realized at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of component detection, and in particular to a hole position detection pin assembly, a measuring tool and an application thereof. Background Art

[0002] In the design and manufacturing process of mechanical parts, the precise layout of the hole system is crucial, because the position error of these holes is directly related to the main technical parameters of the parts. These technical parameters are the key factors to ensure the quality of the parts, which in turn affect the performance and reliability of the components and even the overall structure composed of these parts.

[0003] At present, in the field of automobile parts inspection, the main function of the inspection fixture is to verify the passability of the hole, but it cannot directly provide the specific deviation value of the hole position. In order to obtain these important data, technicians have to use more traditional methods, such as using a marking pin and a steel ruler for combined measurement. Although these methods can provide certain measurement results, they have low operating efficiency and are prone to introduce large measurement errors, thus affecting the final measurement accuracy.

[0004] A study has obtained a metrological hole position detection mechanism, including: a support, a through hole one is set in the middle of the support, a detection component is set in the through hole one, the detection component includes a detection pin and a detection rotating sleeve, the detection pin includes a detection head and a detection shaft, a mounting hole is set at the lower end of the detection rotating sleeve, the detection shaft is inserted and set in the mounting hole, sensor components are set on both sides of the support, two groups of sensor components are set perpendicular to each other, the sensor detection end is inserted and set in the detection hole, and the end and the surface of the detection rotating sleeve are against each other. The detection mechanism directly converts the offset into a numerical value through the sensor, and can directly read the position deviation of the aperture to be detected. However, the detection structure has the problems of complex structure and high cost, and is not compatible with the existing general inspection tools in the automotive industry. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a hole position detection pin assembly, measuring tooling and application to solve the problems of low detection accuracy and detection efficiency in traditional measurement methods, and to solve the problems of complex structure and high cost in existing detection structures, and to achieve seamless connection with existing automotive parts inspection fixtures.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A hole position detection pin assembly, comprising: An inner shaft, wherein the inner shaft is provided with mutually symmetrical indicating parts; A detection pin, the detection pin being mounted on one end of the inner shaft; A sleeve is sleeved on the inner shaft, the sleeve is formed with a notch in the radial direction, and mutually symmetrical scales are provided on both sides of the notch located at the end of the sleeve. The hole position of the part can be measured by matching the readings of the indicating part and the scales.

[0007] According to the above technical means, the detection pin assembly is a combination of an inner shaft, a detection pin and a sleeve, and two mutually symmetrical indicating parts are cleverly set on the inner shaft, and mutually symmetrical scales are cleverly set on the sleeve, so that the indicating part on the inner shaft and the scale on the sleeve are used in conjunction with each other, and the measurement data, that is, the deviation value of the hole position degree, can be accurately read, thereby improving the accuracy of the hole position degree detection, and allowing the operator to quickly read and measure, thereby improving work efficiency. The problems of low detection accuracy and detection efficiency in traditional measurement methods are solved.

[0008] Since most of the existing inspection tools are provided with inspection reference holes, the present invention, by cleverly combining the design of the inner shaft, the inspection pin and the sleeve, can be directly used in conjunction with the inspection reference holes of the existing automobile parts inspection tools, achieving seamless connection with the existing automobile parts inspection tools, improving the versatility and flexibility of the inspection pin assembly, and reducing costs, providing strong technical support for the in-depth analysis and rapid resolution of vehicle quality issues. By setting mutually symmetrical indicating parts on the inner shaft and setting mutually symmetrical scales on the sleeve, the deviation value of the hole position can be read out through the corresponding cooperation of the two indicating parts and the two scales, avoiding the setting of cumbersome limit structures and components such as dial indicators, and having the advantages of simple structure, easy operation and maintenance.

[0009] Preferably, the notch at the end of the sleeve is U-shaped in the radial direction, and two parallel sides are provided with symmetrical scales.

[0010] The notch at the end of the sleeve adopts a U-shaped structure, which facilitates the matching with the edge of the inner shaft and improves the accuracy of positioning. The scales on both sides of the notch are set symmetrically, so that when measuring, the value can be easily read by aligning the indicator parts on both sides of the inner shaft with the scales on both sides of the notch, ensuring the accuracy of the measurement, simplifying the operator's operating steps, and improving the detection efficiency. In addition, the parallel design on both sides helps to maintain the stability of the detection pin assembly and reduce measurement errors.

[0011] Preferably, the outer side wall of the inner shaft is formed with mutually symmetrical indicating portions along the radial direction.

[0012] By forming mutually symmetrical indicating parts along the radial direction on the outer wall of the inner shaft, the deviation value of the hole position can be accurately read through the cooperation of the indicating parts and the scale, avoiding the setting of cumbersome limit structures and percentages. And the mutually symmetrical indicating parts are set, so that when performing hole position detection, alignment and positioning can be more accurately achieved, thereby improving the accuracy of the measurement results. The symmetrical indicating part design ensures consistency when detecting in different directions and reduces errors caused by improper operation or asymmetric indicating parts. The indicating part on the inner shaft can quickly detect the deviation value of the hole position without the need for additional measuring tools or complicated measuring steps, thereby simplifying the detection process.

[0013] Preferably, the indicating part is a pointer.

[0014] By setting the indicating part in the form of a pointer, the pointer points to the scale with higher accuracy, and the operator can read the test results more intuitively, thereby improving the test accuracy and efficiency.

[0015] Preferably, an elastic component is provided between the inner shaft and the sleeve.

[0016] By setting an elastic component between the inner shaft and the sleeve, the elastic component can absorb and buffer the impact and vibration caused by assembly errors or during operation, thereby improving the stability and durability of the hole position detection pin assembly and forming a stable measurement base platform. In addition, the elastic component can also compensate for processing and assembly errors to a certain extent, ensuring that the detection pin assembly maintains good matching accuracy under different working conditions.

[0017] Preferably, the outer side wall of the inner shaft is formed with a step surface in the radial direction, and the sleeve is provided with a cavity for accommodating the elastic component; One end of the elastic component abuts against the step surface, and the other end abuts against the inner wall of the cavity.

[0018] By forming a step surface radially on the outer wall of the inner shaft and providing a cavity in the sleeve to accommodate the elastic component, a compact design of the component is achieved and space is saved. One end of the elastic component abuts against the step surface and the other end abuts against the inner wall of the cavity. This structural design makes the elastic component more stable when subjected to force and reduces displacement and deformation. Since the elastic component is fixed between the inner shaft and the sleeve, it only needs to be placed in the corresponding position during installation, which is simple to operate and easy to assemble. Due to the stability of the elastic component and the compactness of the structure, it can be ensured that the hole position detection pin assembly maintains precise positioning during use, thereby improving the detection accuracy. The two ends of the elastic component abut against the fixed surface respectively, which reduces the wear caused by frequent use and extends the service life of the component.

[0019] Preferably, the elastic component is a spring.

[0020] Among them, the spring is made of carefully selected high-elastic material, which effectively presses the inner shaft and the sleeve plane to fit tightly, enhancing the stability and accuracy during the measurement process.

[0021] Preferably, the detection pin is detachably mounted on one end of the inner shaft; By designing the detection pin to be detachable, detection pins of different specifications can be replaced according to different detection requirements. By using detachable detection pins, the need to replace the entire detection assembly due to changes in hole position accuracy can be reduced, reducing production costs. By using detachable detection pins, an inner shaft can be equipped with detection pins of various specifications, which adapts to the detection of hole position accuracy of different sizes and shapes, and expands the versatility and adaptability of the detection pin assembly. When the detection pin is worn or damaged, the detection pin can be replaced individually without replacing the entire detection assembly, which facilitates maintenance and replacement. By precisely designing and manufacturing detachable detection pins, the consistency and accuracy of each detection can be ensured, and the detection accuracy can be improved.

[0022] Preferably, the portion of the detection pin used to cooperate with the hole to be measured of the part has a conical structure, a cylindrical structure or a rectangular structure.

[0023] Among them, the detection pin with a conical structure can accurately measure the position of the hole center, ensuring that the contact area between the detection pin and the hole increases with the increase of insertion depth, thereby improving the positioning stability and measurement accuracy, and can accurately measure the position of the hole center. At the same time, the self-locking characteristics of the cone help prevent the detection pin from shifting during the measurement process.

[0024] The cylindrical structure of the detection pin can achieve accurate measurement of circular holes. The cylindrical structure provides a uniform contact surface, so that the detection pin can maintain good concentricity when inserted into the hole, which helps to ensure the consistency and reliability of the measurement results. In addition, the cylindrical structure is easy to manufacture and assemble, and has high versatility.

[0025] The rectangular structure of the detection pin can realize the accurate measurement of rectangular holes. The rectangular structure can provide a larger contact area, which helps to disperse the pressure and reduce the local stress on the hole wall, thereby protecting the surface of the part from damage.

[0026] Preferably, a guide portion is formed at the end of the detection pin for facilitating insertion into the hole to be measured of the part.

[0027] The provision of the guide portion enables the end of the detection pin to be more easily inserted into the hole to be measured of the part, thereby improving the accuracy and convenience of detection.

[0028] Preferably, an indicator arrow is provided at the other end of the inner shaft.

[0029] By providing an indicator arrow at one end of the inner shaft, an intuitive reference direction is provided for the operator to quickly identify the correct installation direction of the detection pin assembly. The indicator arrow helps to ensure that the detection pin assembly can be correctly aligned with the measured hole during the hole position detection process, thereby improving the accuracy and efficiency of the detection. In addition, the presence of the indicator arrow can also reduce installation errors, avoid equipment damage or detection errors caused by incorrect directions, and ensure the smooth progress of the entire detection process.

[0030] The present invention also provides a hole position measurement tool, including the hole position detection pin assembly and the inspection tool described in the present invention; The inspection fixture is provided with a reference hole. When measuring the hole position of the part to be measured, the sleeve is installed in the reference hole, the detection pin is inserted into the hole of the part to be measured, and the hole position of the part is measured according to the matching reading of the indicating part and the scale.

[0031] By using the detection pin assembly of the present invention in combination with the inspection fixture, the hole position of the part to be tested can be accurately measured to ensure the accuracy of the measurement result. It has the advantages of simple operation, easy to master, high work efficiency, high versatility and low cost, and is convenient for daily maintenance and prolongs the service life.

[0032] In actual use, a bushing may be provided between the reference hole of the gauge and the sleeve to further improve the measurement accuracy.

[0033] The present invention also provides an application of the hole position measurement tool as described in the present invention for detecting the hole position and hole center position of vehicle parts.

[0034] Among them, vehicle parts include sheet metal parts, interior and exterior trims, and chassis parts.

[0035] Beneficial effects of the present invention: 1) The hole position detection pin assembly of the present invention cleverly combines the inner shaft, the detection pin and the sleeve, and sets a pair of mutually symmetrical indicating parts on the inner shaft and a pair of mutually symmetrical scales on the sleeve, so as to achieve precise matching between the indicating parts on the inner shaft and the scales on the sleeve. This design enables the operator to accurately read the measurement data, that is, the deviation value of the hole position, thereby significantly improving the accuracy of the hole position detection. In addition, it also enables the operator to quickly complete the reading and measurement work, effectively improving the work efficiency. This method solves the problems of low detection accuracy and low efficiency existing in traditional measurement technology.

[0036] In view of the fact that existing inspection fixtures are usually equipped with inspection reference holes, the inspection pin assembly designed by the present invention can be directly used in conjunction with the inspection reference holes of existing automobile parts inspection fixtures through the ingenious combination of the inner shaft, the inspection pin and the sleeve. This design realizes the seamless connection between the inspection pin assembly and the existing inspection fixture, enhances the versatility and flexibility of the inspection pin assembly, and reduces the cost at the same time. This provides solid technical support for the in-depth analysis and rapid resolution of vehicle quality issues. By setting mutually symmetrical indicating parts on the inner shaft, setting mutually symmetrical scales on the sleeve, and through the precise matching of these two pairs of indicating parts and scales, the deviation value of the hole position can be easily read. This method avoids the setting of complex limit structures and components such as dial indicators, and has the advantages of simple structure, convenient operation and easy maintenance.

[0037] 2) The hole position measurement tool of the present invention realizes accurate measurement of the hole position of the part to be measured by using the detection pin assembly of the present invention in combination with the inspection fixture, thereby ensuring the accuracy of the measurement result. The tool is easy to operate, easy to master, highly efficient, highly versatile and low-cost, and is convenient for daily maintenance and effectively prolongs the service life. In the field of parts detection technology, it has significant promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of a hole position detection pin assembly of the present invention; Figure 2 An exploded view of a hole position detection pin assembly of the present invention; Figure 3 A front view of a hole position detection pin assembly of the present invention; Figure 4 for Figure 3 Sectional view along AA; Figure 5 It is a structural schematic diagram of the inner shaft; Figure 6 A schematic diagram of the structure of a detection pin with a conical structure; Figure 7 is a schematic diagram of the structure of the sleeve; Figure 8 It is a schematic diagram of the structure of the assembly of the hole position measuring tool and the part to be measured of the present invention; Fig. 9 A top view of the assembly of the hole position measuring tool of the present invention and the part to be measured; Among them, 1-inner shaft, 11-indicating part, 12-step surface, 13-indicating arrow, 14-threaded mounting hole; 2-detection pin; 3-sleeve, 31-scale, 32-cavity; 4-elastic component; 5-gauging fixture, 51-reference hole; 6-part to be tested. DETAILED DESCRIPTION

[0039] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0040] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0041] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present application. However, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details.

[0042] The present invention aims to disclose a hole position detection pin assembly, a measuring tool and an application, so as to solve the problems of low detection accuracy and detection efficiency in traditional measurement methods, and also solve the problems of complex structure and high cost in existing detection structures, and simultaneously achieve seamless connection with existing automobile parts inspection fixtures.

[0043] like Figures 1 to 7 As shown, a hole position detection pin assembly comprises: An inner shaft 1, wherein the inner shaft 1 is provided with mutually symmetrical indicating parts 11; A detection pin 2, wherein the detection pin 2 is mounted on one end of the inner shaft 1; The sleeve 3 is sleeved on the inner shaft 1, and a notch is formed in the radial direction of the sleeve 3. Mutually symmetrical scales 31 are provided on both sides of the notch at the end of the sleeve 3. The hole position of the part can be measured by matching the readings of the indicating part 11 and the scales 31.

[0044] The detection pin assembly is a combination of an inner shaft, a detection pin and a sleeve, and two mutually symmetrical indicating parts are cleverly arranged on the inner shaft, and mutually symmetrical scales are cleverly arranged on the sleeve, so that the indicating part on the inner shaft and the scale on the sleeve are used in conjunction with each other, and the measurement data, that is, the deviation value of the hole position degree, can be accurately read, thereby improving the accuracy of the hole position degree detection, and allowing the operator to quickly read and measure, thereby improving work efficiency. The problem of low detection accuracy and detection efficiency in traditional measurement methods is solved.

[0045] Since most of the existing inspection tools are provided with inspection reference holes, the present invention, by cleverly combining the design of the inner shaft, the inspection pin and the sleeve, can be directly used in conjunction with the inspection reference holes of the existing automobile parts inspection tools, achieving seamless connection with the existing automobile parts inspection tools, improving the versatility and flexibility of the inspection pin assembly, and reducing costs, providing strong technical support for the in-depth analysis and rapid resolution of vehicle quality issues. By setting mutually symmetrical indicating parts on the inner shaft and setting mutually symmetrical scales on the sleeve, the deviation value of the hole position can be read out through the corresponding cooperation of the two indicating parts and the two scales, avoiding the setting of cumbersome limit structures and components such as dial indicators, and having the advantages of simple structure, easy operation and maintenance.

[0046] In some embodiments, in order to facilitate the cooperation with the edge of the inner shaft and improve the accuracy of positioning, the notch at the end of the sleeve 3 is radially arranged in a U-shaped structure, and symmetrical scales 31 are arranged on two parallel sides. The scales 31 on both sides of the notch are arranged symmetrically. In actual measurement, the indicator parts 11 on both sides of the inner shaft 1 are directly aligned with the scales 31 on both sides of the notch, and the scales are kept consistent, so that the value can be easily read, and the measurement accuracy is ensured, thereby simplifying the operation steps of the operator and improving the detection efficiency.

[0047] The scale 31 increases toward the opening of the notch, that is, the 0 scale is located near the bottom of the U-shaped structure and gradually increases toward the opening.

[0048] In some embodiments, in order to simplify the structure and avoid setting up complicated limit structures and 100%, mutually symmetrical indicating parts 11 are formed radially on the outer wall of the inner shaft 1, so that when performing hole position detection, alignment and positioning can be more accurately performed, thereby improving the accuracy of the measurement results. The design of the symmetrical indicating part 11 ensures consistency when detecting in different directions and reduces errors caused by improper operation or asymmetric indicating parts. Through the indicating part on the inner shaft, the deviation value of the hole position can be quickly detected without the need for additional measuring tools or complicated measuring steps, thereby simplifying the detection process.

[0049] In some embodiments, in order to make the indicating portion point to the scale with higher accuracy and allow the operator to read the detection result more intuitively, thereby improving the detection accuracy and detection efficiency, the indicating portion 11 is set to a pointer configuration.

[0050] Exemplarily, the pointer can be set to be a triangle with the corners of the triangle aligned with the scale lines, or it can be a thin needle thread that can accurately correspond to the scale lines to facilitate accurate reading of the scale values.

[0051] In some embodiments, in order to form a stable measurement base platform, an elastic component 4 is provided between the inner shaft 1 and the sleeve 3. The elastic component can absorb and buffer the impact and vibration caused by assembly errors or during operation, thereby improving the stability and durability of the hole position detection pin assembly. In addition, the elastic component can also compensate for processing and assembly errors to a certain extent, ensuring that the detection pin assembly maintains good matching accuracy under different working conditions.

[0052] In some embodiments, in order to achieve a compact design of the detection pin assembly and save space, a step surface 12 is formed radially on the outer wall of the inner shaft 1, and a cavity 32 for accommodating the elastic component 4 is provided in the sleeve 3. One end of the elastic component 4 abuts against the step surface 12, and the other end abuts against the inner wall of the cavity 32. This structural design enables the elastic component to be more stable when subjected to force, reducing displacement and deformation. Since the elastic component is fixed between the inner shaft and the sleeve, it only needs to be placed in the corresponding position during installation, which is simple to operate and easy to assemble. Due to the stability of the elastic component and the compactness of the structure, it can be ensured that the hole position detection pin assembly maintains precise positioning during use, thereby improving the detection accuracy. The two ends of the elastic component abut against the fixed surface respectively, which reduces the wear caused by frequent use and extends the service life of the component.

[0053] Exemplarily, the elastic component 4 is a spring.

[0054] The spring is made of a carefully selected high-elastic material, which effectively presses the inner shaft 1 and the sleeve 3 to fit closely together, thereby enhancing the stability and accuracy during the measurement process.

[0055] In some embodiments, in order to replace detection pins of different specifications according to different detection requirements, the detection pin 2 is detachably installed at one end of the inner shaft 1.

[0056] The use of detachable detection pins has the following advantages: 1) It can reduce the need to replace the entire detection assembly due to changes in hole position, thereby reducing production costs; 2) It allows an inner shaft to be equipped with detection pins of various specifications, adapting to the detection of hole position of different sizes and shapes, and expanding the versatility and adaptability of the detection pin assembly; 3) When the detection pin is worn or damaged, the detection pin can be replaced individually without replacing the entire detection assembly, thereby facilitating maintenance and replacement; 4) Through the precise design and manufacture of detachable detection pins, the consistency and accuracy of each detection can be ensured, thereby improving the detection accuracy.

[0057] In some embodiments, the portion of the detection pin 2 that is used to match the hole to be measured of the part is set to have a conical structure, a cylindrical structure, a rectangular structure, or other shapes that are adaptively matched with the hole.

[0058] Among them, the detection pin with a conical structure can accurately measure the position of the hole center, ensuring that the contact area between the detection pin and the hole increases with the increase of insertion depth, thereby improving the positioning stability and measurement accuracy, and can accurately measure the position of the hole center. At the same time, the self-locking characteristics of the cone help prevent the detection pin from shifting during the measurement process.

[0059] The cylindrical structure of the detection pin can achieve accurate measurement of circular holes. The cylindrical structure provides a uniform contact surface, so that the detection pin can maintain good concentricity when inserted into the hole, which helps to ensure the consistency and reliability of the measurement results. In addition, the cylindrical structure is easy to manufacture and assemble, and has high versatility.

[0060] The rectangular structure of the detection pin can realize the accurate measurement of rectangular holes. The rectangular structure can provide a larger contact area, which helps to disperse the pressure and reduce the local stress on the hole wall, thereby protecting the surface of the part from damage.

[0061] Exemplarily, in order to facilitate installation and disassembly and ensure the stability of assembly, a threaded mounting hole 14 is set at one end of the inner shaft 1 along the axial direction of the inner shaft 1, and an external thread is set at one end of the detection pin 2, so that the detection pin 2 is threadedly connected to the inner shaft 1.

[0062] In some embodiments, in order to make it easier for the end of the detection pin to be inserted into the hole to be measured of the part, thereby improving the accuracy and convenience of detection, a guide portion is formed at the end of the detection pin 2 to facilitate insertion into the hole to be measured of the part.

[0063] In some embodiments, in order to provide an intuitive reference direction for the operator to quickly identify the correct installation direction of the detection pin assembly, an indicator arrow 13 is provided at the other end of the inner shaft 1. The indicator arrow helps to ensure that the detection pin assembly can be correctly aligned with the measured hole during the hole position detection process, thereby improving the accuracy and efficiency of the detection. In addition, the presence of the indicator arrow can also reduce installation errors, avoid equipment damage or detection errors caused by wrong directions, and ensure the smooth progress of the entire detection process.

[0064] In some embodiments, Figure 8 and Fig. 9 As shown, a hole position measurement tool is also provided, including the hole position detection pin assembly and the inspection tool 5 in any of the above embodiments; Among them, a reference hole 51 is provided on the inspection fixture 5. When measuring the hole position of the part to be measured 6, the sleeve 3 is installed into the reference hole 51, and the detection pin 2 is inserted into the hole of the part to be measured. The hole position of the part is measured according to the matching reading of the indicating part 11 and the scale 31.

[0065] By using the detection pin assembly and the inspection fixture, the hole position of the part to be tested can be accurately measured to ensure the accuracy of the measurement result. It has the advantages of simple operation, easy to master, high work efficiency, high versatility and low cost, and is easy to maintain and maintain on a daily basis, thus extending the service life.

[0066] In actual use, a bushing may be provided between the reference hole 51 of the gauge 5 and the sleeve 3 to further improve the measurement accuracy. The gauge 5 is an existing gauge for vehicle parts.

[0067] In some embodiments, there is also provided an application of a hole position measurement tool as described above for detecting the hole position and hole center position of vehicle parts.

[0068] When the measuring tool is used to detect the hole position of the parts to be tested on the vehicle (such as sheet metal parts, interior and exterior trim parts, chassis parts, etc.), the parts to be tested are first fixed, and the inspection fixture 5 of the inspection pin assembly is placed in the working position, and a suitable inspection pin 2 is selected according to the hole (for example, a cylindrical inspection pin is selected for a circular hole, and a rectangular inspection pin is selected for a square hole), and is installed in the threaded mounting hole 14 at one end of the inner shaft 1 by screwing, and then the inspection pin assembly is smoothly slid into the reference hole 51 of the inspection fixture 5, and the sleeve 3 is matched with the reference hole 51, and the inspection pin 2 is inserted into the hole of the part to be tested on the vehicle at the same time, and the sleeve 3 is rotated until the inspection pin 2 is completely, accurately and vertically inserted into the hole of the part to be tested. At this time, the notch of the sleeve 3 is consistent with the deviation direction of the hole of the part to be tested, and then the inner shaft 1 is rotated until the scales 31 indicated by the two mutually symmetrical indicating parts 11 are completely consistent, and the scale value read at this time is the deviation value of the hole position.

[0069] When the measuring tool is used to detect the hole center position of the part to be measured 6 on the vehicle, the part to be measured 6 is first fixed, and the inspection fixture 5 of the inspection pin assembly is placed in the working position. According to the inspection pin 2 with a conical structure, it is installed in the threaded mounting hole 14 at one end of the inner shaft 1 by screwing. Then the inspection pin assembly is smoothly slid into the reference hole 51 of the inspection fixture 5, and the sleeve 3 is matched with the reference hole 51. At the same time, the inspection pin 2 is inserted into the hole of the part to be measured 6 on the vehicle, and the sleeve 3 is rotated until the inspection pin 2 is completely, accurately and vertically inserted into the hole of the part to be measured 6, and the inspection pin 2 is tightly matched with the hole of the part to be measured 6. At this time, the notch of the sleeve 3 is consistent with the deviation direction of the hole of the part to be measured 6, and then the inner shaft 1 is rotated until the scales 31 indicated by the two mutually symmetrical indicating parts 11 are completely consistent. The scale value read at this time is the deviation value of the hole center position, that is, the distance tolerance between the hole center axis and the reference axis.

[0070] In summary, the hole position detection pin assembly of the present invention cleverly combines the inner shaft, the detection pin and the sleeve together, and sets a pair of mutually symmetrical indicating parts on the inner shaft, and sets a pair of mutually symmetrical scales on the sleeve, so as to achieve precise matching between the indicating parts on the inner shaft and the scales on the sleeve. This design enables the operator to accurately read the measurement data, that is, the deviation value of the hole position, thereby significantly improving the accuracy of the hole position detection. In addition, it also enables the operator to quickly complete the reading and measurement work, effectively improving the work efficiency. This method solves the problems of low detection accuracy and low efficiency existing in traditional measurement technology.

[0071] In view of the fact that existing inspection fixtures are usually equipped with inspection reference holes, the inspection pin assembly designed by the present invention can be directly used in conjunction with the inspection reference holes of existing automobile parts inspection fixtures through the ingenious combination of the inner shaft, the inspection pin and the sleeve. This design realizes the seamless connection between the inspection pin assembly and the existing inspection fixture, enhances the versatility and flexibility of the inspection pin assembly, and reduces the cost at the same time. This provides solid technical support for the in-depth analysis and rapid resolution of vehicle quality issues. By setting mutually symmetrical indicating parts on the inner shaft, setting mutually symmetrical scales on the sleeve, and through the precise matching of these two pairs of indicating parts and scales, the deviation value of the hole position can be easily read. This method avoids the setting of complex limit structures and components such as dial indicators, and has the advantages of simple structure, convenient operation and easy maintenance.

[0072] The hole position measuring tool of the present invention realizes accurate measurement of the hole position of the part to be measured by using the detection pin assembly of the present invention in combination with the inspection fixture, thereby ensuring the accuracy of the measurement result. The tool is easy to operate, easy to master, highly efficient, highly versatile and low in cost, and is convenient for daily maintenance and effectively prolongs the service life. In the field of parts detection technology, it has significant promotion and application value.

[0073] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A hole position detection pin assembly, characterized in that: include: An inner shaft (1), wherein the inner shaft (1) is provided with mutually symmetrical indicating parts (11); A detection pin (2), the detection pin (2) being mounted on one end of the inner shaft (1); A sleeve (3) is sleeved on the inner shaft (1), the sleeve (3) is formed with a notch in the radial direction, and mutually symmetrical scales (31) are provided on both sides of the notch at the end of the sleeve (3), and the hole position of the part is measured by matching the readings of the indicating portion (11) and the scales (31).

2. The hole position detection pin assembly according to claim 1, characterized in that: The notch at the end of the sleeve (3) is of a U-shaped structure along the radial direction, and two parallel sides are provided with symmetrical scales (31).

3. The hole position detection pin assembly according to claim 1, characterized in that: The outer wall of the inner shaft (1) is radially formed with mutually symmetrical indicating portions (11); And / or, the indicating part (11) is a pointer.

4. The hole position detection pin assembly according to claim 1, characterized in that: An elastic component (4) is provided between the inner shaft (1) and the sleeve (3).

5. The hole position detection pin assembly according to claim 4, characterized in that: The outer wall of the inner shaft (1) is formed with a step surface (12) in the radial direction, and the sleeve (3) is provided with a cavity (32) for accommodating the elastic component (4); One end of the elastic component (4) abuts against the step surface (12), and the other end abuts against the inner wall of the cavity (32); And / or, the elastic component (4) is a spring.

6. The hole position detection pin assembly according to claim 1, characterized in that: The detection pin (2) is detachably mounted on one end of the inner shaft (1); And / or, the portion of the detection pin (2) used to match the hole to be measured of the part has a conical structure, a cylindrical structure or a rectangular structure.

7. The hole position detection pin assembly according to claim 1, characterized in that: The end of the detection pin (2) is formed with a guide portion for facilitating insertion into the hole to be measured of the part.

8. The hole position detection pin assembly according to claim 1, characterized in that: The other end of the inner shaft (1) is provided with an indication arrow (13).

9. A hole position measurement tool, characterized in that: A hole position detection pin assembly and a checking fixture (5) comprising the hole position detection pin assembly and a checking fixture (5) as claimed in any one of claims 1 to 8; The inspection fixture (5) is provided with a reference hole (51). When measuring the hole position of the part to be measured (6), the sleeve (3) is inserted into the reference hole (51), the detection pin (2) is inserted into the hole to be measured of the part to be measured (6), and the hole position of the part to be measured (6) is measured according to the matching readings of the indicating portion (11) and the scale (31).

10. An application of the hole position measurement tool as claimed in claim 9, characterized in that: The measuring tool is used to detect the hole position and hole center position of vehicle parts.

Images