A surface inspection aid and gauge

Abstract

The application discloses a surface detection auxiliary tool and a detection tool, and relates to the technical field of detection tools. The surface detection auxiliary tool is used for assisting in detecting the position degree of a to-be-detected surface of a to-be-detected workpiece, and comprises a support main body, a sliding piece, a detection pin and a locking piece. The detection pin comprises a detection head and a detection table. In the case that the surface detection auxiliary tool is in a detection state, the detection head is in abutment with a detection point of the to-be-detected workpiece. The distance between the detection part of the sliding piece and the detection table is a detection distance. The detection distance has a preset relationship with the position degree of the to-be-detected surface. The detection tool comprises a detection tool body and a surface detection auxiliary tool arranged on the detection tool body. Through simple operation, the geometric features of the to-be-detected surface can be converted into a size that can be measured. The defects of difficult measurement and unchanged data reading during the detection of the to-be-detected surface which is limited by the blocked operation space are overcome. The detection time is shortened, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of parts inspection technology, and more specifically, to a surface inspection auxiliary tool and inspection fixture. Background Technology

[0002] To ensure the quality of automotive parts, positional tolerance plays a crucial role. Positional tolerance is a form and position tolerance used to determine the allowable range of variation in the ideal position of a measured feature (such as a hole, shaft, or plane) relative to one or more datum features. Simply put, it measures whether a specific part on a component is accurately positioned as specified in the design. Positional tolerance calculations depend on different geometric elements and measurement methods. For simple point positional tolerance calculations, the deviation between the actual point and its theoretical position is typically measured, and then it is determined whether this deviation is within the specified positional tolerance range.

[0003] When measuring positional accuracy, conventional measuring tools such as feeler gauges, set squares, and dial indicators are generally required to check the positional accuracy of the workpiece's surface to be measured. In actual production, for double-layer welded structures such as front door assembly parts, when the surface to be measured is mounted on the base plate of a fixture for inspection, the surface to be measured is sandwiched between the base plate and the outer plate of the part. The operating space is insufficient and the measurement is restricted by obstructions, making it inconvenient to use conventional measuring tools.

[0004] Furthermore, when the surface to be tested on the workpiece is concave, it is lower than the surrounding surface. Existing testing methods involve measuring the gap on the back side of the surface or using a method of stacking inserts. However, this method is time-consuming, labor-intensive, and inconvenient.

[0005] In summary, when the detection space of the workpiece to be tested is limited, how to improve the detection efficiency of the positional accuracy of the surface to be tested has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this application is to provide a surface inspection auxiliary tool to assist in detecting the positional accuracy of the surface to be tested on a workpiece, thereby improving inspection efficiency;

[0007] Another objective of this application is to provide an inspection tool having the aforementioned face inspection auxiliary tools.

[0008] The first aspect of this application provides a surface inspection auxiliary tool for assisting in the detection of the positional accuracy of a test surface of a workpiece. The surface inspection auxiliary tool includes:

[0009] The support body includes a first mounting part and a second mounting part. The first mounting part is used to connect to the inspection fixture for inspecting the workpiece to be tested, and the second mounting part is provided with a through first pin hole.

[0010] The sliding member and the detection pin are slidably engaged. The detection pin includes a detection head and a detection table. When the surface inspection auxiliary tool is in the detection state, the detection pin is slidably engaged with the first pin hole. The detection head and the detection table are located on both sides of the second mounting part. The distance between the detection part of the sliding member and the detection table is the detection distance. When the detection head abuts against the detection point of the workpiece to be tested, the detection distance has a preset relationship with the position of the surface to be tested.

[0011] Locking element, used to lock the sliding element to the detection pin.

[0012] In one possible implementation, the preset relationship is that the detection distance is the position degree of the surface to be measured;

[0013] or,

[0014] The preset relationship is: the difference between the detection distance and the position of the surface to be measured is N, N is greater than 0, and the detection part of the sliding part is located between the second mounting part and the detection table.

[0015] In one possible implementation, the slider is provided with a through second pin hole, the slider is sleeved on the detection pin through the second pin hole, and the detection part of the slider is the end face of the slider facing the detection table.

[0016] In one possible implementation, the locking element is a screw, and the sliding element has a through threaded hole. The locking element and the sliding element are threadedly connected. When the locking element is tightened, the tail end presses against the detection pin.

[0017] In one possible implementation, the detection pin is provided with at least one slide groove, which is positioned to face the locking member; when the locking member is tightened, its tail end abuts against the slide groove; the extension direction of the slide groove is parallel to the movement direction of the detection pin.

[0018] In one possible implementation, the surface inspection auxiliary tool also includes a guide bushing fitted into a first pin hole in the support body, through which the inspection pin passes.

[0019] In one possible implementation, the detection head is a spherical or conical structure;

[0020] When the detection head has a conical structure, the cross-sectional diameter of the detection head gradually decreases along the direction from near the detection platform to far away from the detection platform.

[0021] In one possible implementation, a handle is provided at the end of the detection pin furthest from the detection head.

[0022] In one possible implementation, the supporting structure is a straight plate or a Z-shaped plate;

[0023] When the supporting body is a Z-shaped plate, the first mounting part is the first horizontal part of the Z-shaped plate, the second mounting part is the second horizontal part of the Z-shaped plate, and the first horizontal part and the second horizontal part are connected by the transition part of the Z-shaped plate.

[0024] In the surface inspection auxiliary tool provided in this application, during the inspection process, the support body is installed on the base plate of the fixture. The detection head of the detection pin abuts against the surface to be measured of the workpiece. The surface to be measured will push the detection pin to move, converting the positional relationship between the surface to be measured and the reference into the distance between the detection part of the sliding component and the inspection table. Tightening the locking component to fix the detection pin and the sliding component ensures that they do not move relative to each other. The detection pin and the sliding component are then removed from the support body, and the detection distance is measured. The positional accuracy of the surface to be measured can be obtained through a preset relationship.

[0025] Compared with related technologies, the surface inspection auxiliary tool provided in this application can transform the geometric features of the surface to be tested into a removable and measurable size through simple operation. This overcomes the shortcomings of measurement difficulties and unchanged data reading when the operating space is limited by obstruction during the testing of the surface to be tested, shortens the testing time, and improves the testing efficiency.

[0026] The second aspect of this application provides an inspection tool, including an inspection tool body and a surface inspection auxiliary tool disposed on the inspection tool body, wherein the surface inspection auxiliary tool is a surface inspection auxiliary tool in any of the above possible implementations.

[0027] The inspection tool provided in this application has all the technical effects of the aforementioned face inspection auxiliary tools, and will not be described in detail here. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the face inspection auxiliary tool disclosed in the embodiments of this application;

[0030] Figure 2 This is a cross-sectional view of the face inspection auxiliary tool disclosed in the embodiments of this application.

[0031] The attached figures are labeled as follows:

[0032] 100. Supporting structure;

[0033] 200. Detection pin; 210. Detection head; 220. Detection table; 230. Handle;

[0034] 300. Sliding component;

[0035] 400. Guide bushing;

[0036] 500. Locking components. Detailed Implementation

[0037] This application discloses a surface inspection auxiliary tool to assist in detecting the positional accuracy of the surface to be tested on a workpiece, thereby improving detection efficiency;

[0038] This application also discloses an inspection tool having the above-mentioned face inspection auxiliary tools.

[0039] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0040] See Figure 1 and Figure 2 The surface inspection auxiliary tool disclosed in this application includes a support body 100, a sliding member 300, a detection pin 200, and a locking member 500.

[0041] The supporting body 100 is a rigid component, including a first mounting part and a second mounting part. The first mounting part is used to install the surface inspection auxiliary tool on the fixture for inspecting the workpiece. The installation method includes, but is not limited to, bolt connection, snap-fit, and welding. Those skilled in the art can select the appropriate installation method based on design requirements. It is understood that some processing parameters of the workpiece (e.g., positional accuracy) need to be detected on the corresponding fixture. During detection, the workpiece needs to be relatively fixed to the fixture. The surface inspection auxiliary tool disclosed in this application can be fixed at the corresponding position on the fixture based on the position to be detected of the workpiece. After the workpiece is fixed to the fixture, the fixed position of the surface inspection auxiliary tool on the fixture has a designed positional relationship with the workpiece, thus reflecting this positional relationship on the surface inspection auxiliary tool.

[0042] The second mounting part is provided with a through first pin hole, and the detection pin 200 is used to slide with the first pin hole.

[0043] The sliding member 300 and the detection pin 200 are slidably engaged, allowing the sliding member 300 to slide freely on the surface of the detection pin 200, thereby changing the relative positional relationship between the two. This allows the positional degree of the test surface of the workpiece to be measured to be reflected in the relative positional relationship between the sliding member 300 and the detection pin 200.

[0044] The detection pin 200 can be an elongated rod-shaped component, including a detection head 210 and a detection platform 220. The detection head 210 is used to contact the surface to be tested on the workpiece. The detection platform 220 can be an annular boss provided on the detection pin 200, with its platform surface perpendicular to the axis of the detection pin 200. It should be noted that the structure of the detection platform 220 is not limited to an annular boss; those skilled in the art can choose the specific structure of the detection platform 220 based on design requirements, as long as its position on the detection pin 200 can be easily identified.

[0045] The slider 300 is provided with a detection part, which may be the end face of the slider 300 facing the detection table 220, or a protruding pointer on the slider 300 that is parallel to the end face of the detection table 220.

[0046] When the surface inspection auxiliary tool is in the inspection state, the inspection pin 200 slides in conjunction with the first pin hole, allowing the inspection pin 200 to slide freely along its own axis, with the axis of the inspection pin 200 directly facing the surface of the workpiece to be inspected. At this time, the inspection head 210 and the inspection table 220 are located on opposite sides of the second mounting part, and the distance between the inspection part of the sliding member 300 and the inspection table 220 is the inspection distance.

[0047] When the detection part is an end face, the vertical distance between the detection part and the end face of the detection table 220 can be directly measured using a gap gauge; when the detection part is a protruding pointer, the scale line of the distance between the detection pin 200 and the end face of the detection table 220 is marked on the surface of the detection pin 200, and the detection distance can be read by the scale value aligned with the pointer tip.

[0048] When the detection head 210 is in contact with the detection point of the workpiece to be tested, the detection distance and the positional accuracy of the surface to be tested have a preset relationship. It should be noted that the preset relationship between the detection distance and the positional accuracy of the surface to be tested can be designed by those skilled in the art according to the detection requirements.

[0049] For example, the preset relationship can be: the detection distance is the positional degree of the surface to be measured. That is, the distance between the detection part of the slider 300 and the detection stage 220 is the positional degree of the surface to be measured of the workpiece. When the actual position of the detection point on the surface to be measured is at the theoretical design position, the distance between the detection part and the detection stage 220 is zero. If the actual position of the detection point on the surface to be tested deviates from the theoretically designed position, the direction of the deviation can be determined by the sign of the distance value. For example, when the actual position of the detection point is closer to the installation position of the surface inspection auxiliary tool than the theoretically designed position, the distance between the detection part of the sliding member 300 and the inspection table 220 is positive. In other words, when the measured distance between the detection part of the sliding member 300 and the inspection table 220 is positive, it indicates that the actual position of the detection point has shifted towards the inspection tool. Conversely, when the actual position of the detection point is farther from the installation position of the surface inspection auxiliary tool than the theoretically designed position, the distance between the detection part of the sliding member 300 and the inspection table 220 is negative. In other words, when the measured distance between the detection part of the sliding member 300 and the inspection table 220 is negative, it indicates that the actual position of the detection point has shifted away from the inspection tool.

[0050] The positive or negative value of the distance between the detection part of the sliding member 300 and the detection table 220 can be assisted by setting positive and negative scale values ​​on the detection pin 200 to help the inspection personnel read the distance value. The scale position where the scale line is flush with the end face of the detection table 220 is defined as the 0 scale; the scale line extends from the 0 scale towards the detection head 210, and the scale value in this direction is positive; the scale line extends from the 0 scale away from the detection head 210, and the scale value in this direction is negative.

[0051] The preset relationship can also be: the difference between the detection distance and the positional accuracy of the surface to be measured is N, where N is greater than 0. Furthermore, the detection part of the slider 300 is located between the second mounting part and the detection table 220. That is, the measured distance between the detection part of the slider 300 and the detection table 220 is M, and the difference between M and N is the positional accuracy of the surface to be measured. When the actual position of the detection point on the surface to be measured is at the theoretically designed position, M and N are equal. If the actual position of the detection point on the surface to be tested deviates from the theoretically designed position, the direction of the deviation can be determined by comparing the magnitudes of M and N. For example, when the actual position of the detection point is closer to the installation position of the surface inspection auxiliary tool than the theoretically designed position, then M is greater than N. In other words, when the measured distance M between the detection part of the sliding member 300 and the inspection table 220 is greater than N, it indicates that the actual position of the detection point has shifted towards the inspection tool. Conversely, when the actual position of the detection point is farther from the installation position of the surface inspection auxiliary tool than the theoretically designed position, then M is less than N. In other words, when the measured distance M between the detection part of the sliding member 300 and the inspection table 220 is less than N, it indicates that the actual position of the detection point has shifted away from the inspection tool.

[0052] It should be noted that the value of N must be greater than the maximum possible offset of the surface being measured to ensure that the measurement range covers the entire range of the actual location of the detection point. For example, N can be selected within the range of 3mm to 8mm, such as N being 5mm.

[0053] When the surface of the workpiece to be tested is in a narrow area, it is difficult to observe the scale or operate the measuring tool during the inspection process. For example, the gauge may be too deep or angled to reach the detection position, or the space may be narrower than expected, making it difficult for the operator to see the scale of the surface inspection auxiliary tool. Alternatively, if the surface inspection auxiliary tool is not equipped with a scale, it is inconvenient or even impossible to measure the aforementioned detection distance in a narrow area. Therefore, the surface inspection auxiliary tool also includes a locking member 500 to lock the sliding member 300 to the detection pin 200, ensuring that the sliding member 300 and the detection pin 200 maintain a corresponding positional relationship. This ensures that the distance between the detection part of the sliding member 300 and the detection table 220 remains constant, facilitating the removal of the sliding member 300 and the detection pin 200 for measurement and reading. This design allows the operator to measure or read the aforementioned detection distance in an open space, avoiding reading angle errors caused by obstructed vision. Furthermore, the locking member 500 prevents inaccurate readings caused by the sliding member 300 wobbling during measurement.

[0054] In summary, during the inspection process, the support body 100 of the surface inspection auxiliary tool disclosed in this application can be installed on the base plate of the inspection tool. During measurement, the sliding member 300 is slid so that it abuts against the support body 100, and then the detection pin 200 is pushed to move so that the detection head 210 of the detection pin 200 abuts against the surface to be measured of the workpiece. In this way, the relative positional relationship between the sliding member 300 and the gauge is fixed, and the relative positional relationship between the gauge and the workpiece to be tested is fixedly installed according to the theoretical design position of the workpiece to be tested. Therefore, the relative positional relationship between the sliding member 300 and the gauge, and the corresponding positional relationship between the gauge and the reference position (i.e., the theoretical design position) of the surface to be tested of the workpiece to be tested, also have a corresponding positional relationship. In addition, the detection head 210 of the detection pin 200 and the surface to be tested of the workpiece to be tested can reflect the corresponding positional relationship between the detection pin 200 and the corresponding surface of the workpiece to be tested. Therefore, the distance between the actual position and the theoretical design position of the surface to be tested of the workpiece to be tested is converted into the distance between the detection part of the sliding member 300 and the detection table 220.

[0055] Tighten the locking part 500 to fix the detection pin 200 and the sliding part 300, ensuring that the two will not move relative to each other. This allows the actual position of the test surface of the workpiece to be maintained on the detection pin 200 and the sliding part 300. Remove the detection pin 200 and the sliding part 300 from the support body 100 and measure the detection distance (i.e., the distance between the detection part of the sliding part 300 and the detection table 220). The position of the test surface can be obtained through the preset relationship.

[0056] Compared with related technologies, the surface inspection auxiliary tool provided in this application can convert the position of the surface to be tested into a removable and measurable dimension through simple operation. This overcomes the shortcomings of measurement difficulties and inconvenient data reading when the operating space is limited by obstruction, shortens the inspection time, and improves the inspection efficiency.

[0057] In one specific embodiment, the detection pin 200 has a smooth cylindrical surface, and the sliding member 300 is a hollow sleeve-shaped component with a through second pin hole. The sliding member 300 is sleeved on the detection pin 200 through the second pin hole, and the two are fitted with a clearance fit. The detection part of the sliding member 300 is the end face of the sliding member 300 facing the detection table 220. This design limits radial offset, reduces the eccentricity error of the sliding member 300, and ensures that the sliding member 300 moves along a set trajectory. Furthermore, when the detection pin 200 is subjected to lateral force, such as the reaction force when the detection head contacts the workpiece to be measured, the sliding member 300 provides multi-point support through its length-to-diameter ratio structure, suppressing the bending deformation of the detection pin 200 and ensuring the positioning accuracy of the end effector.

[0058] For ease of measurement, when the sliding component 300 is a hollow sleeve-shaped component, the preset relationship needs to be set as follows: the difference between the detection distance and the position of the surface to be measured is N, and N is greater than 0.

[0059] In another specific embodiment, the slider 300 can also be a slider. To enable the slider to be installed on the detection pin 200, a guide rail and scale lines can be provided on the detection pin 200. The slider 300 slides with the guide rail, and a groove is provided on the slider 300 to slide with the guide rail. The detection part can be a pointer, and the detection distance is read by the scale value aligned with the pointer. In this embodiment, when the slider 300 is a slider, since the slider cannot cover the entire circumference of the detection pin 200, it will not completely block the reference surface / scale value on the detection stage 220. Therefore, it is not necessary to set the above-mentioned N. Measurement can be performed when the detection stage 220 is moved to coincide with the detection part of the slider 300 or to be moved between the detection part and the support body 100.

[0060] In one specific embodiment, to provide precise axial position adjustment and fixation, the locking element 500 is configured as a screw. A corresponding sliding element 300 has a through threaded hole, and the locking element 500 is threadedly connected to the sliding element 300. When tightened, the tail of the locking element 500 presses against the detection pin 200. This design allows for fine axial position adjustment during testing; once the detection pin 200 abuts against the surface to be tested, tightening the screw securely locks it in that position, achieving high-precision positioning. Furthermore, this design is easy to assemble and disassemble, reducing maintenance difficulty and cost.

[0061] If the locking part 500 is directly pressed against the smooth cylindrical surface of the detection pin 200, the tail contact area of ​​the locking part 500 is small. In actual use, it is easy to slip during vibration or impact, and the contact stress is concentrated. The surface of the detection pin 200 will be crushed and indented.

[0062] Therefore, to overcome the above-mentioned problems, this embodiment of the application provides at least one slide groove on the detection pin 200. This slide groove is directly opposite the locking member 500 and is used to abut against the tail of the locking member 500 when it is tightened. Only one slide groove may be provided, and one or more locking members 500 may be provided to cooperate with this slide groove. Two or more slide grooves may also be provided, each requiring a corresponding locking member 500. The number of locking members 500 corresponding to each slide groove may be one or more; specifically, those skilled in the art can design according to requirements.

[0063] The groove increases the contact area with the locking element 500, distributes the load, eliminates the risk of slippage, and prevents crushing damage to the surface of the detection pin 200. Furthermore, the groove extends parallel to the direction of movement of the detection pin 200. When the detection pin 200 needs to move, the locking element 500 needs to be loosened, and then the detection pin 200 is moved, allowing the tail of the locking element 500 to slide within the groove, eliminating assembly uncertainties.

[0064] Because there is frequent relative movement between the detection pin 200 and the first pin hole of the support body 100, wear of the shaft hole will occur during use, affecting the smoothness of the movement of the detection pin 200 and the accuracy of its direction. To overcome the above problems, the surface inspection auxiliary tool disclosed in this embodiment is also provided with a guide bushing 400, which is assembled in the first pin hole of the support body 100, and the detection pin 200 passes through the guide bushing 400. The guide bushing 400 provides low-friction, non-creeping smooth guidance, optimizes motion accuracy, reduces wear, reduces costs, and improves system maintainability. In order to reduce the axial movement of the guide bushing 400, the guide bushing 400 is also provided with a shoulder, and the corresponding first pin hole of the support body 100 is set as a stepped hole with a stepped surface, and the shoulder abuts against the stepped surface. This design achieves precise axial positioning, optimizes load distribution, and simplifies assembly.

[0065] Ideally, the contact between the detection pin 200 and the surface to be measured should be point contact. Therefore, to minimize the contact area between the detection pin 200 and the surface, the detection head 210 is designed to be spherical or conical. When the detection head is conical, its cross-sectional diameter gradually decreases from near to far from the detection stage. Compared to planar or cylindrical designs, the spherical and conical design of the detection head 210 significantly improves its adaptability to complex surface morphologies and reduces slippage, bounce, and positioning drift during contact, greatly improving detection stability and measurement accuracy.

[0066] To facilitate the movement of the detection pin 200 during use, a handle 230 may be provided at the end of the detection pin 200 away from the detection head 210.

[0067] Different surfaces to be tested and fixtures have different spatial positions. To adapt to different testing points and improve the versatility of surface inspection auxiliary tools, the support body 100 can be configured as a straight plate or a Z-shaped plate. When the support body 100 is a Z-shaped plate, the first mounting part is the first horizontal part of the Z-shaped plate, and the second mounting part is the second horizontal part of the Z-shaped plate. The first and second horizontal parts are connected by a transition part. For example... Figure 1 In the specific embodiment shown, the angle between the transition portion and the horizontal portion of the support body 100 is 90°. The Z-shaped plate support body 100 has a bending structure, which can bypass obstacles such as inspection tool protrusions, solving the industry pain point that inspection tools cannot directly reach in compact spaces. Furthermore, by customizing the bending angle and arm length, the surface inspection auxiliary tool can adapt to various specifications of workpieces to be tested, reducing changeover costs. Using a straight plate results in a simple structure, high rigidity, low cost, and easy processing.

[0068] Another core aspect of this application is the disclosure of a fixture that includes the aforementioned surface inspection auxiliary tools. The fixture includes a fixture body and surface inspection auxiliary tools disposed on the fixture body. The surface inspection auxiliary tools can be any of the surface inspection auxiliary tools described above, and multiple surface inspection auxiliary tools can be provided according to different surfaces of the workpiece to be measured, or multiple surface inspection auxiliary tools can be provided for different detection points on the same surface to be measured. Because this fixture possesses the aforementioned surface inspection auxiliary tools, it combines all the technical effects of the aforementioned surface inspection auxiliary tools, which will not be elaborated upon here.

[0069] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed. Additionally, in the description of embodiments in this application, "a plurality of" means two or more.

[0070] In the description of this application, it should be understood that the terms "height," "thickness," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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 application. In the description of this application, "a plurality of" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "parallel" means completely parallel or nearly completely parallel; for example, parallelism is considered to be within a 10° range of complete parallelism.

[0071] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Specific technical means in some embodiments may be incorporated, in whole or in part, into another embodiment unless explicitly excluded by another embodiment. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A face inspection assisting tool characterized by comprising: Used to assist in detecting the positional accuracy of the surface to be measured on a workpiece, including: The support body (100) includes a first mounting part and a second mounting part. The first mounting part is used to connect to the inspection fixture for inspecting the workpiece to be tested, and the second mounting part is provided with a through first pin hole. A sliding member (300) and a detection pin (200) are provided. The sliding member (300) and the detection pin (200) are slidably engaged. The detection pin (200) includes a detection head (210) and a detection platform (220). When the surface inspection auxiliary tool is in the detection state, the sliding member (300) abuts against the second mounting part, and the detection pin (200) is slidably engaged with the first pin hole. The detection head (210) and the detection platform (220) are located on both sides of the second mounting part, respectively. The distance between the detection part of the sliding member (300) and the detection platform (220) is the detection distance. When the detection head (210) abuts against the detection point of the workpiece to be tested, the detection distance has a preset relationship with the position of the surface to be tested. A locking element (500) is used to lock the sliding element (300) to the detection pin (200).

2. The face inspection aid of claim 1, wherein, The preset relationship is: the detection distance is the positional degree of the surface to be measured; or, The preset relationship is as follows: the difference between the detection distance and the position of the surface to be tested is N, N is greater than 0, and the detection part of the sliding member (300) is located between the second mounting part and the detection table (220).

3. The face inspection aid of claim 1, wherein, The sliding member (300) is provided with a through second pin hole. The sliding member (300) is sleeved on the detection pin (200) through the second pin hole, and the detection part of the sliding member (300) is the end face of the sliding member (300) facing the detection table (220).

4. The face inspection aid of claim 1, wherein, The locking member (500) is a screw, and the sliding member (300) has a through threaded hole. The locking member (500) is threadedly connected to the sliding member (300). When the locking member (500) is tightened, its tail presses against the detection pin (200).

5. The face inspection aid of claim 4, wherein, The detection pin (200) is provided with at least one slide groove, which is positioned to face the locking member (500); when the locking member (500) is tightened, its tail end abuts against the slide groove; the extension direction of the slide groove is parallel to the movement direction of the detection pin (200).

6. The face inspection aid of claim 1, wherein, The surface inspection auxiliary tool also includes a guide bushing (400), which is fitted into the first pin hole of the support body (100), and the detection pin (200) passes through the guide bushing (400).

7. The face inspection aid of claim 1, wherein, The detection head (210) has a spherical or conical structure; When the detection head (210) has a conical structure, the cross-sectional diameter of the detection head (210) gradually decreases along the direction from near the detection stage (220) to away from the detection stage (220).

8. The face inspection aid of claim 1, wherein, A handle (230) is provided at the end of the detection pin (200) away from the detection head (210).

9. The face inspection aid of any one of claims 1-8, wherein, The supporting body (100) is a straight plate or a Z-shaped plate; When the support body (100) is a Z-shaped plate, the first mounting part is the first horizontal part of the Z-shaped plate, the second mounting part is the second horizontal part of the Z-shaped plate, and the first horizontal part and the second horizontal part are connected by the transition part of the Z-shaped plate.

10. A gauge, characterized by It includes an inspection fixture body and a surface inspection auxiliary tool disposed on the inspection fixture body, wherein the surface inspection auxiliary tool is the surface inspection auxiliary tool as described in any one of claims 1-9.

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