Detection jig for sealing cover

Abstract

The utility model discloses a detection jig for a sealing cover, which is used for detecting the sealing cover of a target model, the middle part of the front surface of the sealing cover is a concave surface, and a flat plate to be detected with mounting holes is arranged around the concave surface; comprising a detection panel and a positioning piece. The middle part of the front surface of the detection panel is a concave surface, the periphery of the concave surface is a detection flat plate with positioning holes, and the concave surface is used for being in clearance fit with the convex surface of the sealing cover, so that a to-be-detected flat plate of the sealing cover is in contact with the detection flat plate due to gravity; the vertical projections of the mounting holes in the to-be-detected flat plate on the detection flat plate are overlapped with the target positioning holes in the detection flat plate in a one-to-one correspondence manner; the target positioning hole of the detection flat plate is used for fixing the to-be-detected flat plate of the sealing cover on the detection flat plate through a positioning piece; the front surface of the detection flat plate serves as a reference surface for flatness detection and is used for detecting the flatness of a to-be-detected flat plate of the sealing cover. According to the utility model, whether the to-be-detected sealing cover is a target model can be determined and the flatness of the sealing cover can be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts detection, in particular to a detection fixture for a sealing cover. Background Technique

[0002] With the rapid development of Chinese automobiles, automobiles have shown the same iterative performance as mobile phones. Although automobiles are constantly updated, many of the automobile parts can be shared, or can be applied to new models with slight dimensional changes. Among them, the sealing cover products of automobiles are a typical example.

[0003] See Figure 1 , Figure 1 As an existing automobile sealing cover, the middle part of the cover plate is a concave surface, and the periphery of the cover plate is a flat plate with mounting holes. Existing automobile enterprises only change the hole positions of the automobile sealing cover in different models, while the overall dimensions and structures of the cover plates will not change. This can reduce the R & D cost, but it also makes it difficult to identify different models of sealing covers only by appearance and naked eyes during the production process, and it is very easy to have the risk of mixing materials. In addition, in the manufacturing industry, the sealing cover products have flatness requirements. At this time, a detection fixture is needed that can quickly and accurately distinguish different models of sealing covers and can also detect the flatness of the sealing covers. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a detection fixture for a sealing cover, which can determine whether the sealing cover to be detected is the target model, avoid the risk of mixing materials, and can detect the flatness of the sealing cover.

[0005] To solve the above technical problem, the utility model discloses a detection fixture for a sealing cover. The detection fixture is used to detect the sealing cover of the target model. The middle part of the front surface of the sealing cover is a concave surface, and the middle part of the reverse surface thereof corresponds to a convex surface. The periphery of the sealing cover around the concave surface is a flat plate to be detected with mounting holes; it includes a detection panel and a positioning member;

[0006] The middle part of the front surface of the detection panel is a concave surface. The periphery of the concave surface is a detection flat plate with positioning holes. The concave surface is used for clearance fit with the convex surface of the sealing cover, so that the flat plate to be detected of the sealing cover contacts the detection flat plate due to gravity;

[0007] The mounting holes on the flat plate to be detected coincide with the target positioning holes on the detection flat plate one by one in the vertical projection on the detection flat plate; the target positioning holes on the detection flat plate are used to fix the flat plate to be detected of the sealing cover on the detection flat plate through the positioning member;

[0008] The front surface of the detection flat plate is used as a reference surface for flatness detection to detect the flatness of the flat plate to be detected of the sealing cover.

[0009] As an alternative embodiment, the detection fixture is further configured to detect sealing covers of different models, and the positions of the mounting holes of each sealing cover of different models are different only;

[0010] The vertical projections of all the mounting holes on the flat plate to be measured of any sealing cover of different models on the detection flat plate correspond to and coincide with some of the positioning holes on the detection flat plate one by one;

[0011] The reference plane is used to detect the flatness of the flat plate to be measured of the sealing covers of different models.

[0012] As yet another alternative embodiment, the positioning member is a pin.

[0013] As yet another alternative embodiment, a groove for taking the sealing cover is further provided on the detection flat plate.

[0014] As yet another alternative embodiment, the material of the detection panel is pure aluminum or aluminum alloy.

[0015] As yet another alternative embodiment, the material of the detection panel is 6061-T6 industrial aluminum.

[0016] As yet another alternative embodiment, a feeler gauge or a plug gauge is further included, and the feeler gauge or the plug gauge is used to detect the gap between the flat plate to be measured and the detection flat plate to evaluate the flatness of the flat plate to be measured.

[0017] As yet another alternative embodiment, the surface machining accuracy of the reference plane is 0.01 - 0.03 mm.

[0018] Compared with the prior art, the embodiments of the present utility model have the following beneficial effects:

[0019] The detection fixture of the embodiment of the present utility model is used to detect the sealing cover of the target model, and is suitable for detecting the same type of sealing cover at one detection station. By designing a concave surface on the detection panel to fit with the convex surface of the sealing cover with clearance, the flat plate to be measured of the sealing cover contacts the detection flat plate due to gravity. Since the contact surface on the detection flat plate is the reference plane, it can be directly checked whether the sealing cover is flat and fitting, so as to quickly evaluate the flatness; since the sealing covers of different models are only different in the positions of the mounting holes, by setting positioning holes on the detection panel, it can not only be used for installation, but also, because it corresponds to the mounting holes of the sealing cover to be measured one by one, it can confirm whether the model of the sealing cover to be measured is the model to be detected at this detection station, thus avoiding the risk of material mixing. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a sealing cover disclosed in an embodiment of the present utility model;

[0022] Figure 2 It is a schematic structural diagram of a detection fixture for a sealing cover disclosed in an embodiment of the present utility model. Detailed implementation manners

[0023] In order to enable those skilled in the art to better understand the solutions of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] See Figures 1-2 , an embodiment of the present utility model discloses a detection fixture for a sealing cover 11. The detection fixture is used to detect a sealing cover 1 of a target model. The middle part of the front surface of the sealing cover 1 is a concave surface 11, and the middle part of its reverse surface corresponds to a convex surface. The periphery of the sealing cover 1 around the concave surface 11 is a to-be-tested flat plate 12 with mounting holes 13; the detection fixture includes a detection panel 2 and a positioning member (not shown in the drawings);

[0025] The middle part of the front surface of the detection panel 2 is a concave surface 21. The periphery of the concave surface 21 is a detection flat plate 22 with positioning holes 23. The concave surface 21 is used for clearance fit with the convex surface of the sealing cover 1, so that the to-be-tested flat plate 12 of the sealing cover 1 contacts the detection flat plate 22 due to gravity;

[0026] The mounting holes 13 on the to-be-tested flat plate 12 are vertically projected onto the detection flat plate 22 and correspond one-to-one with the target positioning holes 23 on the detection flat plate 22; the target positioning holes 23 of the detection flat plate 22 are used to fix the to-be-tested flat plate 12 of the sealing cover 1 on the detection flat plate 22 through the positioning member;

[0027] The front surface of the detection flat plate 22 serves as a reference surface for flatness detection, and is used to detect the flatness of the to-be-tested flat plate 12 of the sealing cover 1.

[0028] In this embodiment, the concave surface 21 of the detection panel 2 is slightly larger than the convex surface of the sealing cover 1 product, so as to achieve the effect of avoiding air, so that the plane of the product to be detected fits the fixture. The surrounding circle is the hole position corresponding to the sealing cover 1 product, and positioning parts such as pins can be inserted for positioning. The material of the detection panel 2 is aluminum and can be fine-processed by CNC, and the overall accuracy reaches 0.01~0.03mm.

[0029] The inspection jig of this embodiment is used to inspect the target model of the sealing cover 1 and is suitable for inspecting the same type of sealing cover 1 at one inspection station. By designing a concave surface 21 on the inspection panel 2 to fit with the convex surface of the sealing cover 1 to avoid air gaps, the flat plate 12 of the sealing cover 1 is brought into contact with the inspection plate 22 due to gravity. Since the contact surface on the inspection plate 22 is the reference surface, it is possible to visually check whether the sealing cover 1 is flat and fits well, thereby quickly evaluating the flatness. Since different types of sealing covers 1 differ only in the position of the mounting holes 13, by providing positioning holes 23 on the inspection panel 2, it can not only be used for installation, but also, since it corresponds one-to-one with the mounting holes 13 of the sealing cover 1 to be tested, it can also be confirmed whether the model of the sealing cover 1 to be tested is the model to be tested at the inspection station, thereby avoiding the risk of mixing.

[0030] In an optional embodiment, the detection jig is also used to detect different types of sealing covers 1, and each different type of sealing cover 1 only has a different position of the mounting hole 13;

[0031] The vertical projections of all the mounting holes 13 on the to-be-tested plate 12 of any different types of sealing covers 1 on the detection plate 22 coincide with some of the positioning holes 23 on the detection plate 22 in a one-to-one correspondence;

[0032] The reference surface is used to detect the flatness of the flat plate 12 to be tested of sealing covers 1 of different models.

[0033] For the mounting holes 13 of sealing covers 1 of different specifications, corresponding positioning holes 23 are provided on the detection panel 2 of this embodiment. In this way, after the convex surface of the sealing cover 1 to be detected is matched with the concave surface 21 on the detection panel 2 to avoid air, the corresponding positioning holes 23 on the detection panel 2 can be used to fix the sealing cover 1 through the positioning piece. Since the sealing covers 1 of different specifications differ only in the position of the mounting holes 13, the specifications of the sealing cover 1 can also be determined according to the position of the corresponding positioning holes 23 of the sealing cover 1 or the position of the positioning piece used. Therefore, the detection jig can distinguish between different types of sealing covers 1 and detect the flatness of the sealing cover 1; it can be applicable to different detection stations corresponding to different types of sealing covers 1, and a unified detection jig is used to reduce the manufacturing cost of the detection jig.

[0034] In yet another optional embodiment, the positioning member is a pin.

[0035] In yet another alternative embodiment, a groove 24 for picking up the sealing cover 1 is further provided on the detection plate 22.

[0036] In yet another alternative embodiment, the material of the detection panel 2 is pure aluminum or aluminum alloy.

[0037] In yet another alternative embodiment, the material of the detection panel 2 is 6061-T6 industrial aluminum.

[0038] In yet another alternative embodiment, a feeler gauge or plug gauge is further included. The feeler gauge or the plug gauge is used to detect the gap between the to-be-tested plate 12 and the detection plate 22 to evaluate the flatness of the to-be-tested plate 12. When the sealing cover 1 product is placed on the fixture, it can be quickly detected by a feeler gauge or a plug gauge. For example, if the feeler gauge can be inserted into the gap between the sealing cover 1 product and the fixture, the flatness is unqualified; on the contrary, if the feeler gauge cannot be inserted into the gap between the sealing cover 1 product and the fixture, the flatness of the sealing cover 1 product is qualified.

[0039] In yet another alternative embodiment, the surface machining accuracy of the reference surface is 0.01 - 0.03 mm.

[0040] The disclosure of the content of the embodiments of the present utility model only discloses the preferred embodiments of the present utility model, and is only used to illustrate the technical solutions of the present utility model, rather than limiting them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A detection jig for a sealing cover, the detection jig being used to detect a sealing cover of a target model. The middle part of the front surface of the sealing cover is a concave surface, and the middle part of its reverse surface is correspondingly a convex surface. The periphery of the sealing cover around the concave surface is a flat plate to be tested with mounting holes. It is characterized in that, It includes a detection panel and a positioning member; The middle part of the front surface of the detection panel is a concave surface, and the periphery of this concave surface is a detection flat plate with positioning holes. This concave surface is used for clearance fit with the convex surface of the sealing cover, so that the flat plate to be measured of the sealing cover contacts the detection flat plate due to gravity; The vertical projections of the mounting holes on the flat plate to be measured on the detection flat plate coincide one-to-one with the target positioning holes on the detection flat plate; the target positioning holes on the detection flat plate are used to fix the flat plate to be measured of the sealing cover on the detection flat plate through the positioning member; The surface of the front surface of the detection flat plate serves as a reference surface for flatness detection, and is used to detect the flatness of the flat plate to be measured of the sealing cover.

2. The detection jig according to claim 1, wherein The detection fixture is also used to detect sealing covers of different models, and only the positions of the mounting holes are different for each sealing cover of different models; The vertical projections of all the mounting holes on the flat plate to be measured of any sealing cover of different models on the detection flat plate coincide one-to-one with some of the positioning holes on the detection flat plate; The reference surface is used to detect the flatness of the flat plates to be measured of sealing covers of different models.

3. The detection jig according to claim 1 or 2, characterized in that, The positioning member is a dowel pin.

4. The detection jig according to claim 1 or 2, characterized in that The detection flat plate is also provided with a groove for picking up the sealing cover.

5. The detection jig according to claim 1 or 2, characterized in that, The material of the detection panel is pure aluminum or aluminum alloy.

6. The detection jig according to claim 1, wherein The material of the detection panel is 6061-T6 industrial aluminum.

7. The detection fixture according to claim 1 or 2, characterized in that, It also includes a feeler gauge or a plug gauge, and the feeler gauge or the plug gauge is used to detect the gap between the flat plate to be measured and the detection flat plate to evaluate the flatness of the flat plate to be measured.

8. The detection jig according to claim 1 or 2, characterized in that, The surface machining accuracy of the reference surface is 0.01 - 0.03 mm.

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