Size detection device and detection method

Abstract

A size detection device and detection method for detecting the internal size of a product, comprising a support seat, the size detection device also comprising a first measuring piece and a second measuring piece protruding from the support seat, the first measuring piece comprising first column pins arranged oppositely, the second measuring piece comprising second column pins arranged oppositely, the connecting line between the first column pins intersects with the connecting line between the second column pins, the distance between the two ends of the first column pin is equal to the lower limit of the length of the internal size of the product, and the distance between the two ends of the second column pin is equal to the upper limit of the length of the internal size of the product. The above-mentioned size detection device and detection method have high detection efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of product detection, and in particular to a size detection device and a detection method. Background Art

[0002] In the manufacturing industry, in order to confirm whether the products produced meet the required accuracy, testing the product dimensions is an important step before the products leave the factory. For products with a frame structure, it is necessary to measure the length and width inside the product to confirm whether the dimensions of the length and width inside the product are within the allowable tolerance of the product. The existing devices or methods for detecting the length and width dimensions inside the product generally measure the specific length and width inside the product through a measuring tool, and then compare the measured dimensions with the specified dimensions to confirm whether the measured dimensions are within the allowable tolerance of the product. For mass-produced products, detecting the internal length and width dimensions of the product by measuring and comparing one by one is not only inefficient, but also prone to errors during operation, resulting in unqualified products leaving the factory. Summary of the invention

[0003] In view of this, it is necessary to provide a size detection device and a detection method with high detection efficiency.

[0004] In one embodiment of the present application, a dimension detection device is provided for detecting the internal dimension of a product, including a support seat, and the dimension detection device also includes a first measuring piece and a second measuring piece protruding from the support seat, the first measuring piece includes first column pins arranged opposite to each other, the second measuring piece includes second column pins arranged opposite to each other, the connecting line between the first column pins intersects with the connecting line between the second column pins, the distance between the two ends of the first column pin is equal to the lower limit of the length of the internal dimension of the product, and the distance between the two ends of the second column pin is equal to the upper limit of the length of the internal dimension of the product.

[0005] Furthermore, the radial cross-section of the first pin is taken as the first circumferential surface, the radius of the first circumferential surface is R1, the distance between the centers of the first pins arranged opposite to each other is L1, and the lower limit of the length of the internal dimension of the product is L2, then 2R1+L1=L2.

[0006] Furthermore, the first circumferential surfaces of the first pins arranged opposite to each other have different radii, wherein the radius of one of the first pins is R1 and the radius of the other first pin is R3, then R1+R3+L1=L2.

[0007] Furthermore, the radial cross-section of the second pin is taken as the second circumferential surface, the radius of the second circumferential surface is R2, the distance between the centers of the second pins arranged opposite to each other is L3, and the upper limit of the length of the internal dimension of the product is L4, then 2R2+L3=L4.

[0008] Furthermore, the second circumferential surfaces of the second pins arranged opposite to each other have different radii, wherein the radius of one of the second pins is R2 and the radius of the other second pin is R4, then R2+R4+L3=L4.

[0009] Furthermore, the size detection device also includes a third measuring piece and a fourth measuring piece protruding from the support seat, one end of the third measuring piece is shared with one end of the first measuring piece, and one end of the fourth measuring piece is shared with one end of the second measuring piece.

[0010] Furthermore, the third measuring piece includes a third pin and the first pin shared with the first measuring piece, the third pin is arranged between the first pin and the second pin, and the distance between the third pin and both ends of the shared first pin is equal to the lower limit of the internal dimension width of the product.

[0011] Furthermore, the fourth measuring piece includes a fourth pin and the second pin shared with the second measuring piece, the fourth pin is arranged between the first pin and the second pin, and the distance between the fourth pin and both ends of the shared second pin is equal to the upper limit of the internal dimension width of the product.

[0012] Furthermore, a line connecting the fourth pin and the shared second pin intersects a line connecting the third pin and the shared first pin.

[0013] In one embodiment of the present application, there is also provided a detection method using any of the size detection devices described above, for detecting a product, wherein the product is provided with a groove, comprising:

[0014] The circumferential side of the first pin is tangent to the inner wall of the groove, and the support seat is rotated with the first pin tangent to the inner wall of the groove as the center, so that another first pin moves along the circumferential direction on the inner wall of the groove. If the moving first pin is not blocked by the inner wall of the groove, the lower limit of the internal size of the product is qualified, and the next step of testing is continued. If the moving first pin is blocked by the inner wall of the groove, the lower limit of the internal size of the product is unqualified, and no further testing is required;

[0015] The circumferential side of the second pin is tangent to the inner wall of the groove, and the support seat is rotated with the second pin tangent to the inner wall of the groove as the center, so that another second pin moves along the circumferential direction on the inner wall of the groove. If the moving second pin is blocked by the inner wall of the groove, the upper limit of the internal dimension of the product is qualified; if the moving second pin is not blocked by the inner wall of the groove, the upper limit of the internal dimension of the product is unqualified.

[0016] In the above-mentioned size detection device and detection method, the first measuring piece and the second measuring piece are arranged on the support seat, and the first measuring piece and the second measuring piece are used to respectively detect whether the lower limit and the upper limit of the internal size of the product are qualified. The detection method is simple and the detection efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of a size detection device in one embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the structural decomposition of a size detection device in one embodiment of the present application.

[0019] Figure 3 Schematic diagram of the flow of a detection method of a size detection device in one embodiment of the present application.

[0020] Figure 4 Schematic diagram of the planar structure of a size detection device in one embodiment of the present application.

[0021] Schematic diagram of the process.

[0022] Main component symbols

[0023]

[0024]

[0025] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present application, the present application is described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the features in the implementation methods of the present application can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present application. The described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the embodiments of the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the embodiments of the present application. The terms used in the specification of the present application are only for the purpose of describing specific implementation methods and are not intended to limit the embodiments of the present application.

[0029] Please also read Figure 1 and Figure 2 , a size detection device 100 is used to detect whether the length and width of the internal dimensions of a product 60 are within the tolerance. In order to specifically explain the structural design and working principle of the size detection device 100 in this application, firstly, according to Figure 1 and Figure 2 The structure of the product 60 is described below. The product 60 is generally in the shape of a rectangular parallelepiped, and a groove 61 is formed on one side of the product 60, and the bottom surface of the groove 61 is in the shape of a rectangle.

[0030] The size detection device 100 includes a support base 10, and a first measuring piece 20 and a second measuring piece 30 protruding from the support base 10. Whether the internal size of the product 60 is qualified is determined by rotating the support base 10 and observing whether the first measuring piece 20 and the second measuring piece 30 can be blocked by the inner wall of the groove 61. The first measuring piece 20 is used to detect whether the lower limit of the internal size length of the product 60 is qualified, and the second measuring piece 30 is used to detect whether the upper limit of the internal size length of the product 60 is qualified.

[0031] In one embodiment, the support base 10 is generally a rectangular parallelepiped structure, and the surface of the support base 10 that contacts the groove 61 is a flat surface. The support base 10 is provided with a plurality of connection holes 11 for fixing the first measuring member 20 and the second measuring member 30. The edge of the support base 10 is an arc angle for easy gripping and operation.

[0032] In order to distinguish the first measuring member 20 from the second measuring member 30, a marking line 12 is provided on a side of the support base 10 facing away from the first measuring member 20 and the second measuring member 30. In one embodiment, the marking line 12 is provided along a line connecting the connecting holes 11 where the second measuring member 30 is located. In other embodiments, the marking line 12 may be provided along a line connecting the connecting holes 11 where the first measuring member 20 is located.

[0033] Please also read Figure 1 and Figure 2, the first measuring piece 20 includes first pins 21 arranged opposite to each other, and the first pins 21 are fixed to the support seat 10 through the connecting hole 11. Specifically, one end of the first pin 21 is fixed in the connecting hole 11, and the other end protrudes from the plane of the support seat 10. The first pin 21 is cylindrical. The distance between the two ends of the first pin 21 is equal to the lower limit of the internal dimension length of the product 60. Specifically, the cross-section of the first pin 21 along the radial direction is the first circumferential surface, the radius of the first circumferential surface is R1, the distance between the centers of the two first pins 21 arranged opposite to each other is L1, and the lower limit of the internal dimension length specified for the product 60 is L2. The following relationship is satisfied among R1, L1 and L2: 2R1+L1=L2.

[0034] It can be understood that the first circumferential surfaces of the relatively arranged first pins 21 can be of different radii, wherein the radius of one of the first pins 21 is R1, and the radius of the other first pin 21 is R3, and the following relationship is satisfied among R1, R3, L1 and L2: R1+R3+L1=L2.

[0035] When the first measuring member 20 is tested, the circumference of one of the first pins 21 is tangent to the inner wall of the groove 61, and the support seat 10 is rotated with the first pin 21 tangent to the inner wall of the groove 61 as the center, and the other first pin 21 moves along the circumferential direction on the inner wall of the groove 61. If the first pin 21 in motion is not blocked by the inner wall of the groove 61, it means that the distance between the opposite inner walls of the groove 61 is not less than the lower limit of the length of the inner dimension of the product 60, and accordingly, the lower limit of the length of the inner dimension of the product 60 is qualified. If the first pin 21 in motion is blocked by the inner wall of the groove 61, it means that the distance between the opposite inner walls of the groove 61 is less than the lower limit of the length of the inner dimension of the product 60, and accordingly, the lower limit of the length of the inner dimension of the product 60 is unqualified.

[0036] The second measuring member 30 includes second pins 31 arranged opposite to each other, and the second pins 31 are fixed to the support seat 10 through the connecting hole 11. Specifically, one end of the second pin 31 is fixed in the connecting hole 11, and the other end protrudes from the plane of the support seat 10. The second pin 31 is cylindrical. The connecting line between the second pins 31 intersects with the connecting line between the first pins 21. The distance between the two ends of the second pin 31 is equal to the upper limit of the internal dimension length of the product 60. Specifically, the cross section of the second pin 31 along the radial direction is the second circumferential surface, the radius of the second circumferential surface is R2, the connecting line of the centers of the two second pins 31 arranged opposite to each other intersects with the connecting line of the centers of the two first pins 21 arranged opposite to each other, and the distance between the centers of the two second pins 31 arranged opposite to each other is L3, and the upper limit of the internal dimension length specified by the product 60 is L4. The following relationship is satisfied between R2, L3 and L4: 2R2+L3=L4.

[0037] It can be understood that the second circumferential surfaces of the second pins 31 arranged opposite to each other can have different radii, wherein the radius of one of the second pins 31 is R2, and the radius of the other second pin 31 is R4, and the following relationship is satisfied among R2, R4, L3 and L4: R2+R4+L3=L4.

[0038] When the second measuring member 30 is tested, one of the second pins 31 is tangent to the inner wall of the groove 61, and the support seat 10 is rotated with the second pin 31 tangent to the inner wall of the groove 61 as the center, and the other second pin 31 moves along the inner wall of the groove 61 in the circumferential direction. If the moving second pin 31 is blocked by the inner wall of the groove 61, it means that the distance between the opposite inner walls of the groove 61 is less than the upper limit of the internal dimension length of the product 60, and accordingly, the upper limit of the internal dimension length of the product 60 is qualified. If the moving second pin 31 is not blocked by the inner wall of the groove 61, it means that the distance between the opposite inner walls of the groove 61 is not less than the upper limit of the internal dimension length of the product 60, and accordingly, the upper limit of the internal dimension length of the product 60 is unqualified.

[0039] It is understandable that the size detection device 100 also includes a third measuring member 40 and a fourth measuring member 50 protruding from the support seat 10. The third measuring member 40 and the fourth measuring member 50 are protruding in the same direction as the first measuring member 20 and the second measuring member 30. The third measuring member 40 includes a third pin 41 and the first pin 21 shared with the first measuring member 20. The fourth measuring member 50 includes a fourth pin 51 and the second pin 31 shared with the second measuring member 30. This avoids using multiple support seats 10 to separately detect the length and width inside the product 60, saving production costs. The third pin 41 and the fourth pin 51 are arranged between the first pin 21 and the second pin 31.

[0040] One end of the third measuring piece 40 is shared with one end of the first measuring piece 20, and the first measuring piece 20 detects the lower limit of the length dimension of the groove 61, and the third measuring piece 40 detects the lower limit of the internal width dimension of the groove 61. Specifically, the third pin 41 is fixed to the support seat 10 through the connecting hole 11. The third pin 41 is cylindrical. The distance between the third pin 41 and the two ends of the shared first pin 21 is less than the distance between the two ends of the oppositely arranged first pin 21. And the distance between the third pin 41 and the two ends of the shared first pin 21 is equal to the lower limit of the internal dimension width of the product 60.

[0041] When the third measuring piece 40 is tested, the circumferential side of the first pin 21 is tangent to the inner wall of the groove 61, and the support seat 10 is rotated with the first pin 21 tangent to the inner wall of the groove 61 as the center, and the third pin 41 moves along the circumferential direction on the inner wall of the groove 61. If the third pin 41 is not blocked by the inner wall of the groove 61 during movement, it means that the distance between the inner walls opposite to each other of the groove 61 is not less than the lower limit of the width of the internal dimension of the product 60, and accordingly, the lower limit of the width of the internal dimension of the product 60 is qualified. If the third pin 41 is blocked by the inner wall of the groove 61 during movement, it means that the distance between the inner walls opposite to each other of the groove 61 is less than the lower limit of the width of the internal dimension of the product 60, and accordingly, the lower limit of the width of the internal dimension of the product 60 is unqualified.

[0042] One end of the fourth measuring piece 50 is shared with one end of the second measuring piece 30, and the second measuring piece 30 detects the upper limit of the length dimension of the groove 61, and the fourth measuring piece 50 detects the upper limit of the internal width dimension of the groove 61. Specifically, the fourth pin 51 is fixed to the support seat 10 through the connecting hole 11. The fourth pin 51 is cylindrical. The distance between the fourth pin 51 and the two ends of the shared second pin 31 is less than the distance between the two ends of the oppositely arranged second pin 31. And the distance between the fourth pin 51 and the two ends of the shared second pin 31 is equal to the upper limit of the internal dimension width of the product 60. The line between the fourth pin 51 and the shared second pin 31 intersects the line between the third pin 41 and the shared first pin 21.

[0043] When the fourth measuring piece 50 is tested, the circumferential side of the second pin 31 is tangent to the inner wall of the groove 61, and the support seat 10 is rotated with the second pin 31 tangent to the inner wall of the groove 61 as the center, and the fourth pin 51 moves along the circumferential direction on the inner wall of the groove 61. If the fourth pin 51 is blocked by the inner wall of the groove 61 during movement, it means that the distance between the inner walls of the groove 61 is less than the upper limit of the width of the internal dimension of the product 60, and accordingly, the upper limit of the width of the internal dimension of the product 60 is qualified. If the fourth pin 51 is not blocked by the inner wall of the groove 61 during movement, it means that the distance between the inner walls of the groove 61 is not less than the upper limit of the width of the internal dimension of the product 60, and accordingly, the upper limit of the width of the internal dimension of the product 60 is unqualified.

[0044] Please also read Figure 3 The present application also provides a detection method using the size detection device 100, comprising the following steps:

[0045] S1, make the circumferential side of the first pin 21 tangent to the inner wall of the groove 61, and rotate the support seat 10 with the first pin 21 tangent to the inner wall of the groove 61 as the center, so that another first pin 21 moves along the circumferential direction on the inner wall of the groove 61. If the moving first pin 21 is not blocked by the inner wall of the groove 61, the lower limit of the internal dimension of the product 60 is qualified, and the next step of detection is continued. If the moving first pin 21 is blocked by the inner wall of the groove 61, the lower limit of the internal dimension of the product 60 is unqualified, and no further detection is required;

[0046] S2, make the circumferential side of the second pin 31 tangent to the inner wall of the groove 61, and rotate the support seat 10 with the second pin 31 tangent to the inner wall of the groove 61 as the center, so that another second pin 31 moves along the circumferential direction on the inner wall of the groove 61. If the moving second pin 31 is blocked by the inner wall of the groove 61, the upper limit of the internal dimension of the product 60 is qualified. If the moving second pin 31 is not blocked by the inner wall of the groove 61, the upper limit of the internal dimension of the product 60 is unqualified.

[0047] If the size detection device 100 further includes a third measuring member 40 and a fourth measuring member 50, then after S2, the following steps are further included:

[0048] S3, make the circumferential side of the shared first pin 21 tangent to another set of inner walls of the groove 61, and rotate the support seat 10 with the shared first pin 21 as the center, so that another third pin 41 moves along the circumferential direction on the inner wall of the groove 61. If the moving third pin 41 is not blocked by the inner wall of the groove 61, the lower limit of the internal dimension width of the product 60 is qualified, and the next step of detection is continued. If the moving third pin 41 is blocked by the inner wall of the groove 61, the lower limit of the internal dimension width of the product 60 is unqualified, and no further detection is required;

[0049] S4, make the circumferential side of the shared second pin 31 tangent to another set of inner walls of the groove 61, and rotate the support seat 10 with the shared second pin 31 as the center, so that the fourth pin 51 moves along the circumferential direction on the inner wall of the groove 61. If the moving fourth pin 51 is blocked by the inner wall of the groove 61, the upper limit of the internal dimension width of the product 60 is qualified. If the moving fourth pin 51 is not blocked by the inner wall of the groove 61, the upper limit of the internal dimension width of the product 60 is unqualified.

[0050] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments.

[0051] Example 1

[0052] See also Figure 4, the groove 61 is rectangular, and the length of the groove 61 ranges from 105.0+0.15 / 0mm, then the lower limit of the length of the groove 61 is 105.000mm, and the upper limit of the length of the groove 61 is 105.150mm. The corresponding distance between the two ends of the first pin 21 is equal to 105.000mm; the distance between the two ends of the second pin 31 is equal to 105.150mm. The width of the groove 61 ranges from 65.0+0.15 / 0, then the lower limit of the width of the groove 61 is 65.000mm, and the upper limit of the length of the groove 61 is 65.150mm. The corresponding distance between the two ends of the third pin 41 and one of the first pins 21 is equal to 65.000mm; the distance between the two ends of the fourth pin 51 and one of the second pins 31 is equal to 65.150mm.

[0053] In the above-mentioned dimension detection device 100 and detection method, the first measuring piece 20 and the second measuring piece 30 are arranged on the support seat 10, and the first measuring piece 20 and the second measuring piece 30 are used to respectively detect whether the lower limit and the upper limit of the length of the internal dimension of the product 60 are qualified. The detection method is simple and the detection efficiency is high. In addition, the dimension detection device 100 may also include the third measuring piece 40 and the fourth measuring piece 50 arranged on the support seat 10, and the third measuring piece 40 and the fourth measuring piece 50 are used to respectively detect whether the lower limit and the upper limit of the width dimension of the internal of the product 60 are qualified. The dimension detection device 100 can be used to detect the upper limit and the lower limit of the length and width dimension of the product 60, without changing the equipment or measuring the specific value, and has the advantages of simple detection method, high detection efficiency and not prone to error.

[0054] The above implementation modes are only used to illustrate the technical solutions of the embodiments of the present application and are not intended to limit the present application. Although the embodiments of the present application are described in detail with reference to the above preferred implementation modes, those skilled in the art should understand that the technical solutions of the embodiments of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A size detection device for detecting the internal size of a product, wherein the product is provided with a groove, and the size detection device comprises a support seat, wherein: The size detection device also includes a first measuring member and a second measuring member protruding from the support seat, the first measuring member includes first column pins arranged opposite to each other, the second measuring member includes second column pins arranged opposite to each other, the connecting line between the first column pins intersects with the connecting line between the second column pins, the distance between the two ends of the first column pin is equal to the lower limit of the length of the internal dimension of the product, and the distance between the two ends of the second column pin is equal to the upper limit of the length of the internal dimension of the product; The circumferential side of one of the first pins is configured to be tangent to the inner wall of the groove, and the support seat is configured to rotate with the first pin tangent to the inner wall of the groove as the center of the circle, so that the other first pin moves along the circumferential direction on the inner wall of the groove; The circumferential side of one of the second pins is configured to be tangent to the inner wall of the groove, and the support seat is configured to rotate with the second pin tangent to the inner wall of the groove as the center, so that the other second pin moves along the inner wall of the groove in a circumferential direction.

2. The size detection device according to claim 1, characterized in that: The radial cross section of the first pin is the first circumferential surface, the radius of the first circumferential surface is R1, the distance between the centers of the first pins arranged opposite to each other is L1, and the lower limit of the length of the internal dimension of the product is L2, then 2R1+L1=L2.

3. The size detection device according to claim 2, characterized in that: The first circumferential surfaces of the first pins arranged opposite to each other have different radii, wherein the radius of one of the first pins is R1 and the radius of the other first pin is R3, and then R1+R3+L1=L2.

4. The size detection device according to claim 3, characterized in that: The radial cross-section of the second pin is taken as the second circumferential surface, the radius of the second circumferential surface is R2, the distance between the centers of the second pins arranged opposite to each other is L3, and the upper limit of the length of the internal dimension of the product is L4, then 2R2+L3=L4.

5. The size detection device according to claim 4, characterized in that: The second circumferential surfaces of the second pins arranged opposite to each other have different radii, wherein the radius of one of the second pins is R2 and the radius of the other second pin is R4, and then R2+R4+L3=L4.

6. The size detection device according to claim 1, characterized in that: The size detection device also includes a third measuring piece and a fourth measuring piece protruding from the support seat, one end of the third measuring piece is shared with one end of the first measuring piece, and one end of the fourth measuring piece is shared with one end of the second measuring piece.

7. The size detection device according to claim 6, characterized in that: The third measuring piece includes a third pin and the first pin shared with the first measuring piece, the third pin is arranged between the first pin and the second pin, and the distance between the third pin and both ends of the shared first pin is equal to the lower limit of the internal dimension width of the product.

8. The size detection device according to claim 7, characterized in that: The fourth measuring piece includes a fourth pin and the second pin shared with the second measuring piece, the fourth pin is arranged between the first pin and the second pin, and the distance between the fourth pin and the two ends of the shared second pin is equal to the upper limit of the internal dimension width of the product.

9. The size detection device according to claim 8, characterized in that: A line connecting the fourth pin and the shared second pin intersects a line connecting the third pin and the shared first pin.

10. A detection method, using the size detection device according to any one of claims 1 to 9, for detecting a product, wherein the product is provided with a groove, characterized in that: include: The circumferential side of the first pin is tangent to the inner wall of the groove, and the support seat is rotated with the first pin tangent to the inner wall of the groove as the center, so that another first pin moves along the circumferential direction on the inner wall of the groove. If the moving first pin is not blocked by the inner wall of the groove, the lower limit of the internal size of the product is qualified, and the next step of testing is continued. If the moving first pin is blocked by the inner wall of the groove, the lower limit of the internal size of the product is unqualified, and no further testing is required; The circumferential side of the second pin is tangent to the inner wall of the groove, and the support seat is rotated with the second pin tangent to the inner wall of the groove as the center, so that another second pin moves along the circumferential direction on the inner wall of the groove. If the moving second pin is blocked by the inner wall of the groove, the upper limit of the internal dimension of the product is qualified; if the moving second pin is not blocked by the inner wall of the groove, the upper limit of the internal dimension of the product is unqualified.

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