Height difference testing fixture

Abstract

The utility model belongs to the technical field of detection tools, and particularly relates to a height difference detection tool. The device comprises a shell, the shell is divided into an upper shell body and a lower shell body, the upper shell body and the lower shell body are connected through a bolt, two adjacent cavities and two measuring columns are arranged in the shell, the two measuring columns are arranged in the cavities respectively, the upper sections and the lower sections of the two measuring columns can stretch out of the shell, the upper sections of the two measuring columns are attached to each other, and the lower sections of the two measuring columns are attached to each other. And the distance between the lower sections of the two measuring columns is matched with a measured part. The utility model is used for solving the technical problem that the existing measuring tool cannot quickly and accurately detect whether the height difference of different parts after superposition welding or abutted seam welding meets the design requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring tools, and in particular relates to a height difference measuring tool. Background Art

[0002] In the manufacturing industry, when the products produced have a more complex spatial structure and are combined with multiple connection methods such as welding and riveting, it is a relatively complicated task to perform dimensional inspection on them. Generally, different inspection methods are adopted according to the requirements of design accuracy. Fine products often use high-precision inspection equipment such as three-coordinate measuring machines, while products with relatively low precision requirements are often inspected with self-made inspection tools. For example, after two parts are superimposed and welded, whether the height difference between the two parts caused by the weld is within the design requirements, or after the two parts are spliced ​​and welded, whether the two parts can still be in the same plane, and whether the height difference between the two parts is within the design requirements. In view of the above situation, conventional measuring tools such as calipers in the existing technology are difficult to quickly and accurately determine the inspection results. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a height difference detection tool for solving the technical problem that the existing tools cannot quickly and accurately detect the height difference after superimposed welding or seam welding of different parts to determine whether it meets the design requirements.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a height difference measuring tool, comprising:

[0005] The shell is divided into an upper shell and a lower shell, the upper shell and the lower shell are connected by bolts, and two adjacent cavities are opened inside the shell.

[0006] Two measuring columns are respectively arranged in the cavity, and the upper and lower sections of the two measuring columns can extend out of the shell, and the upper sections of the two measuring columns are fitted to each other, and the distance between the lower sections of the two measuring columns is adapted to the measured part.

[0007] The present invention mainly addresses the problem of whether the height difference generated by overlapping welding or seam welding of two parts meets the design requirements. The existing technology generally uses measuring tools such as vernier calipers and depth gauges. In order to ensure the accuracy of the measurement results, the vernier caliper and depth gauge need to be kept perpendicular to the measured parts. Once they are not perpendicular, the measurement accuracy will be affected, and the readings need to be read again, which makes the entire inspection process slower. However, the present application only needs to place the measuring column against the measured part, and by observing the gap between the upper section of the measuring column, it can be determined whether the measured part meets the requirements.

[0008] Furthermore, the measuring column comprises an upper section, a middle section and a lower section from top to bottom, the diameter of the middle section is larger than the diameter of the lower section, and the upper section is located on one side of the middle section.

[0009] The beneficial effect of adopting this step is that the middle section can limit the measuring column to move up and down in the shell and will not fall out of the shell.

[0010] Furthermore: the outer sides of the upper section and the middle section are planes.

[0011] The beneficial effect of adopting this step is that the plane can make the two measuring columns fit more stably, thereby improving the detection accuracy.

[0012] Furthermore: a groove is provided on the top surface of the middle section, an elastic member is provided in the groove, and the elastic member is constrained between the upper shell and the middle section.

[0013] The beneficial effect of adopting this step is that the elastic member can keep the lower section of the measuring column in an extended state, and will only contract when the lower section of the measuring column is subjected to a reaction force, thereby keeping the measuring column in close contact with the measured part.

[0014] Furthermore: an opening groove is provided at a position of the lower shell corresponding to the lower section, and the opening groove half-wraps or exposes the lower section.

[0015] The beneficial effect of adopting this step is that the open slot can adapt to the part to be measured, which does not affect the detection and can also protect the lower section of the measuring column.

[0016] Furthermore: the upper edge of the upper section is also provided with a stepped surface, and the length of the stepped surface is the allowable extreme value of the height difference.

[0017] Furthermore: the upper edge of the upper section is provided with a scale or a color block, and the length of the scale or the color block is the allowable extreme value of the height difference.

[0018] The beneficial effects of adopting this step are: stepped surfaces, scales or color blocks are all reasonable ranges for indicating height differences.

[0019] The beneficial effects of the utility model are:

[0020] This application limits the two measuring columns through the shell, allowing the upper sections of the two measuring columns to fit together, while the distance of the lower sections is adapted to the part to be measured. The lower sections of the two measuring columns can be made flush, or a distance can be reserved between the lower sections of the two measuring columns (this distance is the designed height difference). This can be used for height difference detection of spliced ​​or superimposed parts. It is only necessary to fit the lower sections of the two measuring columns to the part to be measured, and the actual height difference of the part to be measured will be reflected in the upper sections of the two test columns; in this way, the height difference can be detected quickly and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of a height difference measuring tool provided by the present invention;

[0023] Figure 2 for Figure 1 Left view of;

[0024] Figure 3 for Figure 2 Cross-sectional view of the middle AA section;

[0025] Figure 4 for Figure 1 Bottom view of

[0026] Figure 5 This is a schematic diagram of the application of a height difference gauge provided by the present invention;

[0027] Figure 6 This is a structural diagram of a height difference measuring tool provided by the present invention;

[0028] Figure 7 for Figure 6 Left view of;

[0029] Figure 8 for Figure 7 Cross-sectional view of the middle BB part;

[0030] Figure 9 for Figure 6 A top view of

[0031] Figure 10 This is a schematic diagram of the application of a height difference gauge provided by the present invention;

[0032] Figure 11 The present invention provides a three-dimensional schematic diagram of a measuring column in a height difference gauge.

[0033] Reference numerals:

[0034] 1-shell; 2-measuring column;

[0035] 11-upper shell; 12-lower shell; 21-upper section; 22-middle section; 23-lower section;

[0036] 121-opening groove; 211-step surface. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0038] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0041] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0042] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] Example

[0044] like Figures 1 to 11 As shown, the utility model provides a height difference measuring tool, comprising:

[0045] The housing 1 is divided into an upper housing 11 and a lower housing 12. The upper housing 11 and the lower housing 12 are connected by bolts. Two adjacent cavities are provided inside the housing 1.

[0046] Two measuring columns 2 are respectively arranged in the cavity, and the upper sections 21 and lower sections 23 of the two measuring columns 2 can extend out of the shell, and the upper sections 21 of the two measuring columns 2 are fitted to each other, and the distance between the lower sections 23 of the two measuring columns 2 is adapted to the part to be measured.

[0047] The present invention mainly addresses the problem of whether the height difference generated by overlapping welding or seam welding of two parts meets the design requirements. The existing technology generally uses measuring tools such as vernier calipers and depth gauges. In order to ensure the accuracy of the measurement results, the vernier caliper and depth gauge need to be kept perpendicular to the measured part. Once they are not perpendicular, the measurement accuracy will be affected, and the readings need to be read again, which makes the entire inspection process slower. The present application only needs to place the measuring column 2 against the measured part, and by observing the gap between the upper section 21 of the measuring column 2, it can be concluded whether the measured part meets the requirements.

[0048] Specifically, it can be divided into embodiment 1 and embodiment 2. Embodiment 1 is as follows Figures 1 to 5 As shown, the lower sections 23 of the two measuring columns 2 are flush, which is used to detect the height difference between the spliced ​​parts. Figures 6 to 10 As shown, a distance is reserved between the lower sections 23 of the two measuring columns 2, which is the same as the designed height difference between the superimposed parts (generally, the height difference after welding will only be greater than the designed height difference). The actual height difference after detection will be reflected in the upper section 21 of the measuring column 2.

[0049] Based on the above technical solution, the measuring column 2 includes an upper section 21 , a middle section 22 and a lower section 23 from top to bottom. The diameter of the middle section 22 is larger than that of the lower section 23 , and the upper section 21 is located on one side of the middle section 22 .

[0050] In the stepped shaft-shaped measuring column 2 , the middle section 22 can restrict the measuring column 2 to move up and down in the housing 1 and prevent it from falling out of the housing 1 .

[0051] like Figure 11 As shown, the outer sides of the upper section 21 and the middle section 22 are planes.

[0052] The flat surface allows the two measuring columns 2 to fit more stably, thereby improving detection accuracy.

[0053] On the basis of the above technical solution, a groove is formed on the top surface of the middle section 22 , and an elastic member is provided in the groove. The elastic member is constrained between the upper shell 11 and the middle section 22 .

[0054] The elastic member is generally preferably a spring, which can keep the lower section 23 of the measuring column 2 extended. It will only contract when the lower section 23 of the measuring column 2 is subjected to a reaction force, thereby keeping the measuring column 2 in close contact with the measured part and ensuring the measurement results.

[0055] On the basis of the above technical solution, an opening slot 121 is provided on the lower shell 12 at a position corresponding to the lower section 23 , and the opening slot 121 half-encloses or exposes the lower section 23 .

[0056] The opening slot 121 can be adapted to the part to be measured, does not affect the detection, and can also protect the lower section 23 of the measuring column 2 .

[0057] On the basis of the above technical solution, the upper edge of the upper section 21 is further provided with a stepped surface 211 , and the length of the stepped surface 211 is the maximum allowable value of the height difference.

[0058] On the basis of the above technical solution, the upper edge of the upper section 21 is provided with a scale or a color block, and the length of the scale or the color block is the allowable extreme value of the height difference.

[0059] The stepped surface 211, scale, or color block all represent a reasonable range for height difference. For example, if two parts are to be spliced ​​and the height difference between the two parts after splicing is required to be no more than 2mm, then the length of the stepped surface 211, scale, or color block is 2mm. The top edge of the upper section 21 of any measuring column 2 must be within the range of the stepped surface 211, scale, or color block of the upper section 21 of the other measuring column 2 to indicate that the height difference between the two parts meets the requirement. If it exceeds this range, it means that the height difference does not meet the requirement.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A height difference gauge, characterized in that: include: The shell is divided into an upper shell and a lower shell, the upper shell and the lower shell are connected by bolts, and two adjacent cavities are opened inside the shell. Two measuring columns are respectively arranged in the cavity, and the upper and lower sections of the two measuring columns can extend out of the shell, and the upper sections of the two measuring columns are fitted to each other, and the distance between the lower sections of the two measuring columns is adapted to the measured part.

2. The height difference gauge according to claim 1, characterized in that: The measuring column comprises an upper section, a middle section and a lower section from top to bottom. The diameter of the middle section is larger than that of the lower section. The upper section is located on one side of the middle section.

3. The height difference gauge according to claim 2, characterized in that: The outer sides of the upper section and the middle section are plane.

4. The height difference gauge according to claim 3, characterized in that: A groove is formed on the top surface of the middle section, an elastic member is provided in the groove, and the elastic member is constrained between the upper shell and the middle section.

5. The height difference gauge according to claim 4, characterized in that: An opening slot is provided at a position of the lower shell corresponding to the lower section, and the opening slot half-encloses or exposes the lower section.

6. The height difference gauge according to claim 5, characterized in that: The upper edge of the upper section is further provided with a stepped surface, the length of which is the maximum allowable value of the height difference.

7. The height difference gauge according to claim 5, characterized in that: The upper edge of the upper section is provided with a scale or a color block, and the length of the scale or the color block is the allowable extreme value of the height difference.

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