A tool for measuring the blue light of an automobile door cover assembly hole

Abstract

The utility model discloses a kind of for automobile door cover assembly hole position blue light measurement's auxiliary tool, it is related to sheet metal hole detection auxiliary tool field, the auxiliary tool for automobile door cover assembly hole position blue light measurement includes measuring hemisphere;And the special-shaped positioning pin of axially embedded in the plane end of measuring hemisphere, and the special-shaped positioning pin can be axially displaced, special-shaped positioning pin includes center pin shaft and is arranged in the outer periphery of center pin shaft middle part, for the positioning boss of the inner wall of the hole position to be measured, center pin shaft bottom is embedded in measuring hemisphere, top is used to pass through the hole position to be measured, positioning boss top gathers, bottom spreads towards the direction away from center pin shaft, center pin shaft middle part is axially passed in bottom embedded into measuring hemisphere The lock screw of being provided with. The present application can be suitable for various diameters of hole position to be measured, strong universality, also need not to be reproduced auxiliary tool for the same sheet metal hole before and after painting.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal hole inspection auxiliary tools, specifically to an auxiliary tool for blue light measurement of hole positions in automotive door hood assemblies. Background Technology

[0002] In the blue light measurement of holes in automotive door hood assemblies, the measurement accuracy is affected by factors such as local deformation of the sheet metal holes on the door hood assembly and interference between the measuring bracket and the blue light probe, which leads to poor blue light measurement angles for some sheet metal holes. Therefore, in order to improve the blue light measurement accuracy of such holes, in the existing technology, a measuring auxiliary tool is installed inside the sheet metal hole during measurement to guide the blue light illumination and facilitate imaging.

[0003] However, in practice, sheet metal hole diameters vary. Therefore, different blue light measurement auxiliary tools need to be customized for sheet metal holes of different diameters. At the same time, to ensure process accuracy, it is also necessary to measure the door cover assembly after painting. Since the diameter of the sheet metal holes will decrease by about 0.2mm after painting, the increased paint film thickness of the door cover assembly results in low versatility of the existing auxiliary measurement tools. The measurement auxiliary tools originally used to measure the hole positions of the door cover before painting are no longer applicable to the sheet metal holes after painting (the diameter of the positioning pin on the sheet metal of the measurement auxiliary tool is only 0.1mm smaller than the designed hole diameter of the sheet metal). This leads to the need to remake the blue light measurement auxiliary tools for the hole positions of the door cover assembly after painting, resulting in a large number of tools and an increase in the financial investment in measurement work. Utility Model Content

[0004] This application provides an auxiliary tool for blue light measurement of hole positions in automotive door hood assemblies. It can solve the technical problems of low versatility of traditional sheet metal hole auxiliary measurement tools in the prior art, which cannot be applied to sheet metal holes of different diameters or the same sheet metal hole before and after painting, resulting in a large number of tools and increasing the capital investment in measurement work.

[0005] This application provides an auxiliary tool for measuring blue light emission from holes in automotive door hood assemblies, including:

[0006] Measuring a hemisphere; and

[0007] A shaped positioning pin is longitudinally embedded at the center of the end of the measuring hemisphere and is axially displaceable. The shaped positioning pin includes a central pin and a positioning boss disposed on the outer periphery of the central pin to abut against the inner wall of the hole to be measured. The bottom of the central pin is embedded in the measuring hemisphere, and the top is used to pass through the hole to be measured. The top of the positioning boss is converged, and the bottom is spread out in a direction away from the central pin. An anti-loosening screw is axially inserted through the middle of the central pin and embedded in the measuring hemisphere.

[0008] In one embodiment, the measuring hemispherical plane end is provided with a first inner groove for the bottom of the central pin to be embedded, the bottom of the central pin is provided with an external thread, and the inner wall of the first inner groove is provided with an internal thread corresponding to the external thread of the central pin.

[0009] In one embodiment, a second inner groove is provided at the top of the first inner groove near the end of the measuring hemispherical plane to accommodate the positioning boss. The inner diameter of the second inner groove is larger than the inner diameter of the first inner groove, and the inner diameter of the second inner groove is equal to the maximum outer diameter of the positioning boss.

[0010] In one embodiment, the bottom of the positioning boss extends toward the first inner groove to form a mating surface, and the outer wall of the mating surface is mated with the inner wall of the second inner groove.

[0011] In one embodiment, a plurality of adsorption magnets are provided at the end of the measuring hemisphere, and the plurality of adsorption magnets are equidistantly arranged along the circumference of the end of the measuring hemisphere.

[0012] In one embodiment, the central pin has a through hole in its central axis, and the anti-loosening screw is located in the through hole.

[0013] In one embodiment, the through hole includes a first internal hexagonal groove located at the top of the central pin and a threaded connection hole located below the first internal hexagonal groove and axially penetrating the central pin, wherein the inner wall of the threaded connection hole is provided with internal threads.

[0014] In one embodiment, the anti-loosening screw includes a nut end and a screw end. The cross-section of the nut end is consistent with the cross-sectional shape of the first internal hexagonal groove, and the thickness of the nut end is less than the depth of the first internal hexagonal groove. A second internal hexagonal groove is formed on the top of the nut end.

[0015] In one embodiment, the outer periphery of the screw end is provided with an external thread corresponding to the internal thread of the threaded connection hole, and the axial length of the screw end is greater than the axial length of the threaded connection hole so that the bottom end of the screw end protrudes outside the threaded connection hole.

[0016] In one embodiment, a third inner groove is provided at the center point of the first inner groove, the position of the third inner groove is opposite to the position of the anti-loosening screw, and the inner wall of the third inner groove is provided with an internal thread corresponding to the external thread of the anti-loosening screw.

[0017] The beneficial effects of the technical solutions provided in this application include:

[0018] 1. Through the design of axially displaceable irregular locating pins and converge-diffusion locating bosses, it can adapt to sheet metal holes of different diameters (including changes in hole diameter before and after painting). There is no need to customize multiple sets of auxiliary tools for different hole diameters or before and after painting, which reduces the cost of re-copying tools due to differences in hole diameter and painting process in traditional solutions. It saves on the purchase, maintenance and storage costs of measurement auxiliary tools in the long term, and significantly reduces the number of tools and management costs.

[0019] 2. The top convergence and bottom diffusion structure of the positioning boss can closely fit the inner wall of the bottom of the sheet metal hole (even if there is local deformation), ensuring the coaxiality of the measuring hemisphere and the hole position, reducing the deviation of the blue light illumination angle, and improving the imaging quality and measurement data accuracy. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments 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.

[0021] Figure 1 A schematic diagram of an auxiliary tool for measuring blue light at the holes in an automotive door hood assembly, provided in an embodiment of this application;

[0022] Figure 2 A cross-sectional view of an auxiliary tool for measuring blue light at the holes of an automotive door hood assembly, provided in an embodiment of this application;

[0023] Figure 3 A measurement hemispherical cross-sectional view of an auxiliary tool for measuring blue light at the hole positions of an automotive door hood assembly, provided in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the irregularly shaped locating pin and anti-loosening screw structure in an auxiliary tool for blue light measurement of hole positions in an automotive door cover assembly, provided in an embodiment of this application.

[0025] In the diagram: 1. Measuring hemisphere; 101. First inner groove; 102. Second inner groove; 103. Adsorption magnet; 104. Third inner groove; 2. Center pin; 201. First internal hexagonal groove; 202. Threaded connection hole; 3. Positioning boss; 301. Mating surface; 4. Anti-loosening screw; 401. Nut end; 402. Screw end; 403. Second internal hexagonal groove. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0027] This application provides an auxiliary tool for blue light measurement of holes in automotive door hood assemblies. It solves the technical problem that existing sheet metal hole auxiliary measurement tools have low versatility, cannot be applied to sheet metal holes of different diameters, and cannot be applied to the same sheet metal hole before and after painting, resulting in a large number of tools and increasing the capital investment in measurement work.

[0028] Figure 1 This application provides a schematic diagram of an auxiliary tool for measuring blue light at the holes in an automotive door hood assembly. Figure 2 A cross-sectional view of an auxiliary tool for blue light measurement of hole positions in an automotive door hood assembly, as provided in an embodiment of this application, is shown below. Figure 1 , Figure 2 As shown, the auxiliary tool in this application includes a measuring hemisphere 1 and a longitudinally embedded part of the measuring hemisphere 1. The measuring hemisphere 1 is a semi-sphere, including a circular end and a flat end. Its flat end is used to fit against the back of the sheet metal hole to be measured. The center of the hemisphere forms a reference point. The flat end of the measuring hemisphere 1 is longitudinally provided with an irregularly shaped positioning pin located at the center of the measuring hemisphere 1. The axial direction of the irregularly shaped positioning pin is perpendicular to the flat end of the hemisphere, and the shaft of the irregularly shaped positioning pin can be displaced along its own axis.

[0029] The irregularly shaped positioning pin includes a central pin 2 located on the outer periphery of the central pin 2 to support the positioning boss 3 of the hole to be measured. The displacement of the irregularly shaped positioning pin mainly relies on the central pin 2. The bottom of the central pin 2 is movably embedded into the plane end of the measuring hemisphere 1 and can undergo relative displacement with the measuring hemisphere 1. A positioning boss 3 is provided in the middle of the irregularly shaped positioning pin. The positioning boss 3 is a conical structure, with its top converging on the outer periphery of the central pin 2 and its bottom spreading away from the central pin 2. In actual measurement work, the positioning boss 3 is located inside the hole to be measured, and its outer wall abuts against the inner wall of the bottom of the hole to be measured. When the diameter of the hole to be measured is small, the central pin 2 moves closer to the measuring hemisphere 1, and the smaller diameter part of the positioning boss 3 contacts the bottom of the hole to be measured. When the diameter of the hole to be measured is large, the central pin 2 moves away from the measuring hemisphere 1, and the larger diameter part of the positioning boss 3 contacts the bottom of the hole to be measured.

[0030] Furthermore, the center pin 2 is axially inserted through the middle and has an anti-loosening screw 4 embedded in the measuring hemisphere 1 at the bottom. The anti-loosening screw 4 passes through both the center pin 2 and the measuring hemisphere 1, and its bottom is also movably set in the measuring hemisphere 1 to fix the current posture and current distance of the measuring hemisphere 1 and the irregular positioning pin, so as to facilitate the subsequent blue light detection work.

[0031] Furthermore, Figure 3 A cross-sectional view of the measuring hemisphere 1 in an auxiliary tool for blue light measurement of hole positions in an automotive door hood assembly, provided in an embodiment of this application, is shown below. Figure 3 As shown, the flat end of the measuring hemisphere 1 is provided with a first inner groove 101 for the bottom of the central pin 2 to be embedded. The bottom of the central pin 2 is provided with an external thread, and the inner wall of the first inner groove 101 is provided with an internal thread corresponding to the external thread of the central pin 2. The detachable connection and relative displacement between the central pin 2 and the measuring hemisphere 1 are achieved by thread engagement. By rotating the central pin 2 in different directions, the axial position of the central pin 2 can be adjusted. Since the positioning boss 3 is located in the middle of the central pin 2, the bottom of the central pin 2 will protrude a certain distance from the bottom surface of the positioning boss 3. Therefore, in one possible embodiment, the depth of the first inner groove 101 is consistent with the length of the rod body of the central pin 2 protruding from the bottom surface of the positioning boss 3.

[0032] Further, see Figure 3 The top of the first inner groove 101 near the plane end of the measuring hemisphere 1 has a second inner groove 102 for accommodating the positioning boss 3. The inner diameter of the second inner groove 102 is larger than the inner diameter of the first inner groove 101, and the inner diameter of the second inner groove 102 is equal to the maximum outer diameter of the positioning boss 3. The bottom of the second inner groove 102 is connected to the first inner groove 101, and the top penetrates the end face of the plane end of the measuring hemisphere 1. The first inner groove 101 and the first inner groove 101 form a stepped structure with a larger top and a smaller bottom, which is consistent with the cross-sectional shape of the bottom of the positioning boss 3 and the bottom of the central pin 2.

[0033] Furthermore, Figure 4 A schematic diagram of the irregularly shaped locating pin and anti-loosening screw 4 in an auxiliary tool for blue light measurement of hole positions in an automotive door hood assembly, provided in an embodiment of this application, is shown below. Figure 4 The bottom of the positioning boss 3 extends toward the first inner groove 101 to form a mating surface 301. The outer wall of the mating surface 301 is mated with the inner wall of the second inner groove 102. The mating surface 301 is mainly used to increase the contact area between the positioning boss 3 and the second inner groove 102 to ensure the stability of the positioning boss 3 when it is displaced.

[0034] Further, see Figure 2The measuring hemisphere 1 has several adsorption magnets 103 at its flat end. The adsorption magnets 103 are equidistantly arranged along the circumference of the measuring hemisphere 1. The adsorption magnets 103 are fixedly arranged at the measuring hemisphere 1, and the surface of the adsorption magnets 103 is preferably flush with the measuring hemisphere 1. The adsorption magnets 103 are mainly used to adsorb the back of the hole to be measured, so as to ensure the overall stability of the device and prevent the overall displacement of the device during the measurement process. In one possible embodiment, the number of adsorption magnets 103 is three sets.

[0035] Further, see Figure 4 The center pin 2 has a through hole in the center axis, and the anti-loosening screw 4 is located in the through hole. Specifically, the through hole includes a first internal hexagonal groove 201 located at the top of the center pin 2 and a threaded connection hole 202 located below the first internal hexagonal groove 201 and axially passing through the center pin 2. The interface shape of the through hole and the anti-loosening screw 4 is consistent. The anti-loosening screw 4 includes a nut end 401 and a screw end 402.

[0036] The first internal hexagonal recess 201 serves not only as a receiving cavity for the nut end 401 but also as a means of tightening the center pin 2. Therefore, in one possible embodiment, the nut end 401 is externally hexagonal and its thickness is less than the depth of the first internal hexagonal recess 201. After the anti-loosening screw 4 is assembled, there is still a certain amount of clearance above the first internal hexagonal recess 201, making it easy to insert an external wrench. The inner wall of the threaded connection hole 202 is provided with internal threads, and the outer circumference of the screw end 402 is provided with external threads corresponding to the internal threads of the threaded connection hole 202. Through thread engagement, rotating the anti-loosening screw 4 in the forward direction allows the anti-loosening screw 4 to gradually pass through the through hole.

[0037] Further, see Figure 3 The axial length of the screw end 402 is greater than the axial length of the threaded connection hole 202 so that the bottom end of the screw end 402 protrudes out of the threaded connection hole 202. A third inner groove 104 is provided at the center point of the first inner groove 101. The position of the third inner groove 104 is opposite to the position of the anti-loosening screw 4. After the anti-loosening screw 4 passes through the through hole, it continues to be turned so that the bottom end of the screw end 402 enters the third inner groove 104. The inner wall of the third inner groove 104 is provided with an internal thread corresponding to the external thread of the anti-loosening screw 4. Through the thread engagement, the measuring hemisphere 1 and the irregular positioning pin are fixed simultaneously.

[0038] Further, see Figure 4 To facilitate the rotation of the anti-loosening screw 4, a second internal hexagonal groove 403 is provided on the top of the screw end 402 of the anti-loosening screw 4, so that an external hexagonal wrench can be inserted. Of course, the "internal hexagonal groove" in this application is only an example, and it can also be a cross groove, a Torx groove or other types of grooves.

[0039] The auxiliary tool in this application is used as follows: Pass the top of the center pin 2 through the hole to be measured, and engage the positioning boss 3 on the back of the hole to be measured. At this time, the diameter of the positioning boss 3 protruding from the measuring hemisphere 1 may be too large, resulting in a certain distance between the measuring hemisphere 1 and the hole to be measured. Keep the measuring hemisphere 1 still and rotate the center pin 2 so that the positioning boss 3 gradually retracts into the measuring hemisphere 1. The measuring hemisphere 1 gradually approaches the hole to be measured until it is adhered to the back of the sheet metal material where the hole to be measured is located. Finally, insert the anti-loosening screw 4 into the center pin 2 and rotate it continuously until the bottom of the anti-loosening screw 4 enters the third inner groove 104 of the measuring hemisphere 1. Once the fixation is complete, the subsequent blue light detection work can begin.

[0040] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this 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. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement 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. 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 claimed herein.

Claims

1. An auxiliary tool for blue light measurement of hole positions in automotive door hood assemblies, characterized in that, include: Measure the hemisphere (1); as well as A shaped positioning pin is longitudinally embedded at the center of the plane end of the measuring hemisphere (1) and is axially displaceable. The shaped positioning pin includes a central pin (2) and a positioning boss (3) disposed on the outer periphery of the central pin (2) to abut against the inner wall of the hole to be measured. The bottom of the central pin (2) is embedded in the measuring hemisphere (1), and the top is used to pass through the hole to be measured. The top of the positioning boss (3) is gathered, and the bottom is spread away from the central pin (2). The central pin (2) is axially penetrated by an anti-loosening screw (4) with its bottom embedded in the measuring hemisphere (1).

2. The auxiliary tool for blue light measurement of hole positions in automotive door hood assembly as described in claim 1, characterized in that: The measuring hemisphere (1) has a first inner groove (101) at its flat end for embedding the bottom of the central pin (2). The bottom of the central pin (2) has an external thread, and the inner wall of the first inner groove (101) has an internal thread corresponding to the external thread of the central pin (2).

3. The auxiliary tool for blue light measurement of hole positions in automotive door hood assembly as described in claim 2, characterized in that: The first inner groove (101) has a second inner groove (102) at the top of the plane end of the measuring hemisphere (1) for accommodating the positioning boss (3). The inner diameter of the second inner groove (102) is larger than the inner diameter of the first inner groove (101), and the inner diameter of the second inner groove (102) is equal to the maximum outer diameter of the positioning boss (3).

4. The auxiliary tool for blue light measurement of hole positions in automotive door hood assembly as described in claim 3, characterized in that: The bottom of the positioning boss (3) extends toward the first inner groove (101) to form a mating surface (301), and the outer wall of the mating surface (301) is mated with the inner wall of the second inner groove (102).

5. The auxiliary tool for blue light measurement of hole positions in automotive door hood assembly as described in claim 1, characterized in that: The measuring hemisphere (1) has several adsorption magnets (103) at its flat end, and the multiple adsorption magnets (103) are equidistantly arranged along the circumference of the measuring hemisphere (1) at its flat end.

6. The auxiliary tool for blue light measurement of hole positions in automotive door hood assembly as described in claim 2, characterized in that: The central pin (2) has a through hole in its central axis, and the anti-loosening screw (4) is located in the through hole.

7. The auxiliary tool for blue light measurement of hole positions in automotive door hood assembly as described in claim 6, characterized in that: The through hole includes a first internal hexagonal groove (201) located at the top of the central pin (2) and a threaded connection hole (202) located below the first internal hexagonal groove (201) and axially penetrating the central pin (2). The inner wall of the threaded connection hole (202) is provided with internal threads.

8. The auxiliary tool for blue light measurement of hole positions in automotive door hood assembly as described in claim 7, characterized in that: The anti-loosening screw (4) includes a nut end (401) and a screw end (402). The cross-section of the nut end (401) is consistent with the cross-sectional shape of the first internal hexagonal groove (201), and the thickness of the nut end (401) is less than the depth of the first internal hexagonal groove (201). A second internal hexagonal groove (403) is provided on the top of the nut end (401).

9. The auxiliary tool for blue light measurement of hole positions in automotive door hood assembly as described in claim 8, characterized in that: The outer periphery of the screw end (402) is provided with an external thread corresponding to the internal thread of the threaded connection hole (202), and the axial length of the screw end (402) is greater than the axial length of the threaded connection hole (202) so that the bottom end of the screw end (402) protrudes out of the threaded connection hole (202).

10. The auxiliary tool for blue light measurement of hole positions in automotive door hood assembly as described in claim 8, characterized in that: A third inner groove (104) is provided at the center point of the first inner groove (101). The position of the third inner groove (104) is opposite to the position of the anti-loosening screw (4), and the inner wall of the third inner groove (104) is provided with an inner thread corresponding to the external thread of the anti-loosening screw (4).

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