Measuring tool and measuring device

Abstract

The utility model relates to a measuring tool and a measuring device, and the measuring tool is used for measuring the aperture and the hole location degree, and comprises a measuring ball which is used for extending into a to-be-measured hole of a metal piece; the mounting part is used for being connected with the surface of the metal piece in a magnetic attraction mode, and the mounting part is mounted on the measuring ball in a position-adjustable mode in the axial direction of the mounting part. When the measuring ball and the to-be-measured hole are in a tangent state, the position of the mounting part on the measuring ball is adjusted, so that the mounting part is adsorbed on the surface of the metal piece, the measuring tool is fixed on the metal piece, and the stability of the measuring tool is improved. The sphere structure of the measuring sphere is not limited by a scanning angle, so that scanning of a scanner of the measuring device is facilitated, the integrity and precision of acquired data can be improved, the scanner can conveniently acquire related data of the aperture and the hole position degree of the to-be-measured hole at the same time, and the measuring efficiency of the measuring device can be improved. The sphere structure can be suitable for to-be-measured holes of various sizes, and the adaptability and compatibility of the measuring tool are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical scanning, in particular to a measuring tool and a measuring device. BACKGROUND

[0002] When measuring the position degree of a hole on a part, a scanner is usually used to directly scan the inner wall of the hole to obtain relevant data, and then the data is fitted to obtain the position degree of the hole. Due to the limitation of the practical range of the scanner and the influence of the scanning angle, part of the hole position cannot be completely scanned, resulting in missing data in the scanning result. Subsequent fitting is affected by the missing data, and the accuracy of the hole position degree deviates, which cannot correctly reflect the real position degree of the hole. CONTENT OF THE INVENTION

[0003] The present application provides a measuring tool and a measuring device, which can solve the problem of insufficient accuracy in measuring the position degree of a hole in the prior art.

[0004] The first aspect of the present application provides a measuring tool for measuring the aperture and position degree of a hole, comprising: a measuring ball for extending into a hole to be measured of a metal piece; and a mounting portion for magnetically connecting with the surface of the metal piece, the mounting portion being adjustably mounted on the measuring ball along the axial direction of the mounting portion.

[0005] In a possible design, the measuring ball is provided with a sliding groove extending along the axial direction of the mounting portion; at least part of the mounting portion is located in the sliding groove, and the mounting portion is in sliding connection with the measuring ball through the sliding groove.

[0006] In a possible design, a guide portion is arranged in the sliding groove; the mounting portion is provided with a protruding portion, and the protruding portion is used for limiting cooperation with the guide portion during the sliding of the mounting portion relative to the measuring ball.

[0007] In a possible design, the measuring tool further comprises a spring, and the spring is mounted in the sliding groove; one end of the spring is in abutment with the mounting portion, and the other end is in abutment with the inner wall of the sliding groove.

[0008] In a possible design, the mounting portion is a magnet.

[0009] In a possible design, a suction magnet is mounted at the bottom of the mounting portion, and the mounting portion is adsorbed to the surface of the metal piece through the suction magnet.

[0010] In a possible design, the suction magnet is a circular ring.

[0011] In a possible design, the mounting portion is provided with a handle portion, and the suction magnet is mounted at the bottom end of the handle portion.

[0012] In a possible design, the mounting portion is further provided with a connecting portion, which is fixedly connected with the handle portion and the guide portion respectively; at least part of the connecting portion is located in the sliding groove.

[0013] The second aspect of the present application provides a measuring device, which comprises the measuring tool.

[0014] In the present application, the measuring ball is used to extend into the hole to be measured of the metal piece. When the measuring ball is tangent to the hole to be measured, the position of the mounting portion on the measuring ball can be adjusted, so that the mounting portion is adsorbed on the surface of the metal piece by magnetic attraction, thereby enabling the measuring tool to be fixed on the metal piece, which is conducive to improving the stability of the measuring tool and avoiding the measuring tool from falling during the measurement process, so that the measuring tool can be applied to the metal piece placed vertically.

[0015] The measuring tool provided by the present application adopts the mode that the measuring ball is tangent to the hole to be measured. The spherical structure of the measuring ball is not limited by the scanning angle, which is convenient for the scanner to scan. Compared with the scanning mode of the prior art, the scanning object is converted, which not only improves the completeness and accuracy of the collected data, but also facilitates the scanner to simultaneously obtain the relevant data of the hole diameter and the hole position degree of the hole to be measured, which is conducive to improving the measurement efficiency of the measuring device. Moreover, the spherical structure of the measuring ball can be applied to holes to be measured of various sizes. When facing holes to be measured of different diameters, the sinking depth of the measuring ball is different, but the measuring ball can be tangent to the hole to be measured, which improves the adaptability of the measuring tool, thereby improving the compatibility and practicality of the measuring tool. The measuring tool is not limited by the type of the hole to be measured and can be applied to a light hole, a nut hole and a hole formed by multi-layer sheet metal lapping.

[0016] It should be understood that the foregoing general description and the following detailed description are only exemplary and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic diagram of the measuring tool provided by the present application;

[0018] Figure 2 FIG. 2 is a structural schematic diagram of the metal piece in an embodiment;

[0019] Figure 3 FIG. 3 is a structural schematic diagram of the measuring tool in FIG. 1 cooperating with the metal piece in FIG. 2; Figure 1 Figure 2

[0020] Figure 4 FIG. 5 is a structural schematic diagram of the measuring tool in FIG. 1 in another perspective view; Figure 1

[0021] Figure 5 FIG. 6 is a structural schematic diagram of the measuring tool in FIG. 1 in another perspective view.​​​Figure 1 exploded view of the measuring tool in

[0022] Reference signs:

[0023] 10 - measuring tool;

[0024] 20 - metal piece;

[0025] 201 - hole to be measured;

[0026] 1 - measuring ball;

[0027] 11 - sliding groove;

[0028] 111 - guide portion;

[0029] 2 - mounting portion;

[0030] 21 - protruding portion;

[0031] 22 - handle portion;

[0032] 23 - connecting portion;

[0033] 3 - spring;

[0034] 4 - adsorbing magnet;

[0035] 5 - mounting piece.

[0036] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application. DETAILED DESCRIPTION

[0037] For a better understanding of the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the drawings.

[0038] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0039] The terms used in the embodiments of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0040] It should be understood that the term "and / or" as used herein merely describes an associated relationship between associated objects, and can represent three relationships, for example, A and / or B can represent three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0041] It should be noted that the terms "upper", "lower", "left", "right" and the like described in the embodiments of the present application are described from the angle shown in the drawings, and should not be understood as a limitation on the embodiments of the present application. In addition, in the context, it should also be understood that when referring to an element connected to another element "on" or "under", it can be directly connected to another element "on" or "under" or indirectly connected to another element "on" or "under" through an intermediate element.

[0042] The embodiments of the present application provide a measuring device for measuring the hole diameter and hole position degree of a hole on a metal piece 20, which comprises at least a measuring tool 10, a scanner and a controller. Figure 1 As shown, the measuring tool 10 comprises a measuring ball 1 and a mounting portion 2, which is adjustably mounted on the measuring ball 1 along the axial direction Z of the mounting portion 2 and is used for magnetic attraction connection with the surface of the metal piece 20. Figure 2 and Figure 3 As shown, the measuring ball 1 is used to extend into the hole to be measured 201 of the metal piece 20, and when the measuring ball 1 is tangent to the hole to be measured 201, the position of the mounting portion 2 on the measuring ball 1 can be adjusted, so that the mounting portion 2 is adsorbed on the surface of the metal piece 20 by magnetic attraction, so that the measuring tool 10 can be fixed on the metal piece 20, which is conducive to improving the stability of the measuring tool 10, avoiding the measuring tool 10 from falling during the measurement, and making the measuring tool 10 applicable to the metal piece 20 placed vertically. After the measuring tool 10 is installed, the scanner can collect relevant data of the measuring ball 1 and the metal piece 20 by laser scanning, which includes but is not limited to the size of the part of the measuring ball 1 exposed to the hole to be measured 201, the diameter of the tangent circle of the measuring ball 1 and the hole to be measured 201, the relative position of the measuring ball 1 on the metal piece 20, etc. The scanner can transmit the collected relevant data to the controller, and then the controller can fit and calculate the hole diameter and hole position degree of the hole to be measured 201 according to the relevant data, for example, the controller can fit the diameter of the tangent circle of the measuring ball 1 and the hole to be measured 201, and the diameter of the tangent circle is the hole diameter of the hole to be measured 201; the controller can also fit the center of the tangent circle of the measuring ball 1 and the hole to be measured 201, and then obtain the hole position degree of the hole to be measured 201 according to the position deviation of the center of the tangent circle and the theoretical center of the hole to be measured 201.

[0043] Due to the scanning angle limitation of the scanner, the prior art is prone to incomplete data when scanning the inner wall of the to-be-measured hole 201 to obtain the hole diameter of the to-be-measured hole 201, and cannot obtain the relevant data of the hole position degree of the to-be-measured hole 201 at the same time. The measuring tool 10 provided in the embodiment adopts the mode that the measuring ball 1 is tangent to the to-be-measured hole 201, and the spherical structure of the measuring ball 1 is not limited by the scanning angle and is convenient for the scanner to scan. Compared with the scanning mode of the prior art, the scanning object is changed, which not only improves the completeness and accuracy of the collected data, but also facilitates the scanner to obtain the relevant data of the hole diameter and the hole position degree of the to-be-measured hole 201 at the same time, and is beneficial to reducing the operation time of the user and improving the measurement efficiency of the measuring device. Moreover, the spherical structure of the measuring ball 1 can be applied to to-be-measured holes 201 of various sizes. When facing to-be-measured holes 201 of different hole diameters, the sinking depth of the measuring ball 1 is different, but the measuring ball 1 can always be tangent to the to-be-measured hole 201, thereby improving the adaptability of the measuring tool 10 and improving the compatibility and practicality of the measuring tool 10. The measuring tool 10 is also not limited by the type of the to-be-measured hole 201 and can be applied to a light hole, a nut hole, and a hole formed by multi-layer sheet metal lapping.

[0044] The specific structure of the measuring tool will be described in detail below. The mounting portion 2 is adjustably mounted on the measuring ball 1. Specifically, a clamping portion can be provided on the mounting portion 2, and a plurality of limiting portions spaced apart along the axial direction Z of the mounting portion 2 can be provided on the measuring ball 1. When it is necessary to adjust the position of the mounting portion 2, the clamping portion can be controlled to be clamped and matched with the limiting portion at the corresponding position. Alternatively, as shown in FIGS. 11 and 12, a sliding groove 11 extending along the axial direction Z of the mounting portion 2 can be provided on the measuring ball 1, and at least part of the mounting portion 2 is located in the sliding groove 11 and is in sliding connection with the sliding groove 11. When it is necessary to adjust the position of the mounting portion 2, the mounting portion 2 only needs to be controlled to slide relative to the sliding groove 11, which is convenient to operate and can improve the accuracy and freedom degree of the mounting portion 2 when adjusting the position. Figure 1 and Figure 4

[0045] Specifically, the mounting portion 2 includes a protruding portion 21 and a connecting portion 23, and the protruding portion 21 is fixedly connected with the connecting portion 23. A guide portion 111 is formed in the sliding groove 11, and the protruding portion 21 can be limited and matched with the guide portion 111 during the sliding of the mounting portion 2 relative to the measuring ball 1, thereby improving the sliding stability of the mounting portion 2. The guide portion 111 not only plays a guiding role for the mounting portion 2, but also plays a limiting role in the length direction X and the thickness direction Y of the mounting portion 2, thereby preventing the mounting portion 2 from being pulled out of the sliding groove 11.

[0046] ​The mounting portion 2 further comprises a handle portion 22 fixedly connected with the connecting portion 23 away from the protruding portion 21, and the handle portion 22 is in a cylindrical structure, so as to be gripped by the user when adjusting the position of the mounting portion 2, thereby improving the use comfort of the user. At least part of the connecting portion 23 is located in the sliding groove 11, and the connecting portion 23 can improve the limiting effect of the mounting portion 2 and the sliding groove 11, thereby further improving the movement stability of the mounting portion 2.

[0047] As shown in Figure 4 and Figure 5 , the measuring tool 10 further comprises a spring 3 installed in the sliding groove 11, and one end of the spring 3 abuts against the protruding portion 21 of the mounting portion 2, and the other end abuts against the inner bottom wall of the sliding groove 11. When the mounting portion 2 moves downward along its own axial direction Z relative to the measuring ball 1, the protruding portion 21 can press the spring 3 together with the inner bottom wall of the sliding groove 11, and when the mounting portion 2 is adsorbed and fixed to the surface of the metal piece 20, the measuring ball 1 can be kept in a stable tangential state with the inner wall of the to-be-measured hole 201 under the pressure of the spring 3, thereby improving the accuracy of the measurement result. When the measurement work is completed and the user controls the mounting portion 2 not to be adsorbed to the surface of the metal piece 20, the mounting portion 2 can slide upward to reset under the restoring force of the spring 3, thereby realizing the automatic reset of the mounting portion 2.

[0048] It should be noted that the spring force of the spring 3 should be smaller than the adsorption force of the mounting portion 2, so as to ensure that the mounting portion 2 can be adsorbed to the surface of the metal piece 20.

[0049] The mounting portion 2 can be a whole magnet, so that the mounting portion 2 can be adsorbed to the surface of the metal piece 20. Alternatively, the mounting portion 2 can be made of steel material, and an adsorption magnet 4 is installed at the bottom of the handle portion 22 of the mounting portion 2, so that the mounting portion 2 can be adsorbed to the surface of the metal piece 20 through the adsorption magnet 4. Since the strength of the steel material is large, this structure can improve the structural strength of the mounting portion 2 on the basis of realizing the adsorption effect of the mounting portion 2, thereby improving the service life of the mounting portion 2. Specifically, the adsorption magnet 4 can be in a circular ring structure, which is conducive to increasing the adsorption area, thereby improving the adsorption effect of the mounting portion 2, and further improving the installation stability of the measuring tool 10. As shown in Figure 5 , the magnet 4 can be fixed at the bottom of the handle portion 22 through a mounting member 5, or can be installed at the bottom of the handle portion 22 through a gluing fixing manner, and the present embodiment does not limit this.

[0050] In addition, the measuring ball 1 can also be made of steel material, which is conducive to improving the structural strength of the measuring ball 1, and is conducive to reducing the risk of damage and deformation of the measuring ball 1 in the use process, thereby improving the service life of the measuring ball 1, and reducing the influence of the structure of the measuring ball 1 on the measurement accuracy.

[0051] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A measuring tool for measuring bore diameter and bore location, characterized by, The application relates to a measuring tool (10) for measuring the diameter of a hole (201) in a metal piece (20). The measuring tool (10) comprises a measuring ball (1) for extending into the hole (201) to be measured in the metal piece (20); and a mounting part (2) for magnetically connecting with the surface of the metal piece (20), wherein the mounting part (2) is adjustably mounted on the measuring ball (1) along the axial direction of the mounting part (2). The measuring ball (1) is provided with a sliding groove (11) extending along the axial direction of the mounting part (2).

2. The measurement tooling of claim 1, wherein, At least part of the mounting part (2) is located in the sliding groove (11), and the mounting part (2) is slidably connected with the measuring ball (1) through the sliding groove (11). The sliding groove (11) is provided with a guide part (111).

3. The measurement tooling of claim 2, wherein, The mounting part (2) is provided with a protruding part (21) for limiting cooperation with the guide part (111) during the sliding of the mounting part (2) relative to the measuring ball (1). The measuring tool (10) further comprises a spring (3) mounted on the sliding groove (11).

4. The measurement tool of claim 2 wherein, One end of the spring (3) abuts against the mounting part (2), and the other end of the spring (3) abuts against the inner wall of the sliding groove (11). The mounting part (2) is a magnet.

5. The measurement tool of claim 1, wherein, A suction magnet (4) is mounted on the bottom of the mounting part (2), and the mounting part (2) is adsorbed on the surface of the metal piece (20) through the suction magnet (4).

6. The measurement tool of claim 3 wherein, The suction magnet (4) is a circular ring.

7. The measuring tool of claim 6 wherein, The mounting part (2) is provided with a handle part (22), and the suction magnet (4) is mounted on the bottom end of the handle part (22).

8. The measuring tool of claim 6 wherein, The mounting part (2) is further provided with a connecting part (23) fixedly connected with the handle part (22) and the guide part (111) respectively.

9. The measuring tool of claim 8 wherein, At least part of the connecting part (23) is located in the sliding groove (11). The application further relates to a measuring tool (10) according to any one of claims 1-9.

10. A measuring device, characterized by ​

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