Jig for detecting cylindrical size

Abstract

The utility model discloses a tool for detecting the dimension of a column, which comprises a base, a measuring plate and a fixing assembly fixedly arranged on the base, the fixing assembly is provided with a plurality of fixing grooves arranged along the vertical direction, the measuring plate is inserted in the fixing grooves, and the measuring plate is fixed on the base. Two ends of the measuring plate are respectively provided with a first groove and a second groove which are used for inserting a to-be-measured piece, two ends of the base are respectively provided with a first positioning block and a second positioning block, the first groove and the first positioning block are arranged correspondingly, and the second groove and the second positioning block are arranged correspondingly. The width of the first groove is larger than or smaller than that of the second groove. According to the jig for detecting the column size, the to-be-detected piece enters the first groove and the second groove from the side surfaces of the first groove and the second groove for measurement, so that the column size in each direction at the same height position and the size in each direction at different heights can be measured, the detection accuracy can be improved, and the product quality can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile inspection tools, and in particular relates to a tool for detecting columnar dimensions. Background Art

[0002] Automotive gauges are tools specifically designed for the planning and design of various vehicle models. Their primary function is to check the dimensions and size of vehicles. They are used to measure and adjust mold accuracy during the production preparation phase, as well as for daily dimensional management after mass production. The use of automotive gauges not only improves the efficiency of the automotive manufacturing industry but also makes the manufacturing process more precise and reliable. Automotive gauges have a wide range of applications, and can check various parts of a vehicle, including the body, doors, and engine, to ensure that the vehicle's dimensions and size meet design requirements. The use of automotive gauges can reduce production delays and scrap rates caused by dimensional inaccuracies, improve production efficiency, and reduce production costs, thereby providing consumers with higher-quality automotive products.

[0003] In the prior art, for the inspection of the cylindrical dimensions of automotive parts, there are strict requirements for the position dimensions at different heights, and the diameter at each height must ensure that the dimensions in all directions are qualified. However, the existing inspection fixture is usually composed of two circular rings, one for measuring the upper limit of the product dimension, and the other for measuring the lower limit of the product dimension. When measuring the lower limit dimension and measuring at the same position, the circle at the same position may be incomplete due to the shrinkage characteristics of the plastic part, which will cause the dimension in a certain direction to be smaller than the lower limit, but not the dimension in all directions is smaller than the lower limit. This will cause the product dimension to be judged as qualified during the measurement of the lower limit, but the actual dimension does not meet the requirements, ultimately resulting in inaccurate inspection results of the inspection fixture. Utility Model Content

[0004] In view of this, in order to solve the problems of the prior art, the present invention provides a jig for detecting columnar dimensions, which can accurately measure the dimensions of a product in various directions at different heights.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A jig for detecting cylindrical dimensions comprises a base, a measuring plate, and a fixing assembly fixedly mounted on the base, wherein the fixing assembly has a plurality of fixing grooves arranged in a vertical direction, the measuring plate is inserted into the fixing grooves, and a first groove and a second groove are respectively provided at both ends of the measuring plate for inserting a workpiece to be measured, and a first positioning block and a second positioning block are respectively provided at both ends of the base, the first groove is arranged correspondingly to the first positioning block, and the second groove is arranged correspondingly to the second positioning block, and the width of the first groove is greater than or less than the width of the second groove.

[0007] The first groove and the second groove of the utility model are both U-shaped grooves, so that the side piece to be measured can enter the first groove and the second groove from the side of the first groove and the second groove, so as to facilitate the measurement of the cylindrical dimensions in various directions at the same height position; at the same time, multiple fixing grooves of different heights are provided on the fixing assembly to fix the measuring plate at different height positions, so as to facilitate the measurement of the dimensions of the side piece to be measured in various directions at different heights.

[0008] In the present invention, one of the widths of the first groove and the second groove corresponds to the upper limit of the product size, and the other corresponds to the lower limit of the product size, thereby ensuring the accuracy of the measurement of the workpiece to be measured.

[0009] According to some preferred implementation aspects of the present invention, the fixing assembly includes a first fixing block and a second fixing block that are symmetrically arranged, and the first fixing block and the second fixing block are both perpendicular to the base.

[0010] According to some preferred implementation aspects of the present invention, the first fixing block is provided with a plurality of third grooves spaced apart along its length direction, and the second fixing block is provided with a plurality of fourth grooves spaced apart along its length direction, the third grooves run through the thickness direction of the first fixing block, and the fourth grooves run through the thickness direction of the second fixing block, and the third grooves and the fourth grooves are arranged in a one-to-one correspondence.

[0011] According to some preferred implementation aspects of the present invention, one of the third grooves and one of the corresponding fourth grooves enclose one of the fixing grooves, and the center of one of the third grooves and the center of the corresponding fourth groove are located on the same horizontal line.

[0012] According to some preferred implementation aspects of the present invention, the length direction of the fixing groove is parallel to the width direction of the measuring plate, and the measuring plate is parallel to the base.

[0013] According to some preferred implementation aspects of the present invention, the first groove and the second groove both penetrate the thickness direction of the measuring plate, the opening of the first groove passes through one end of the measuring plate, and the opening of the second groove passes through the other end of the measuring plate.

[0014] According to some preferred implementation aspects of the present invention, the measuring plate is located above the base, and the distance between the ends of the first groove and the second groove that are close to each other is greater than the depth of the fixing groove.

[0015] According to some preferred implementation aspects of the present invention, a first positioning groove and a second positioning groove are respectively provided at both ends of the base from its top surface downward, the first positioning groove is used to accommodate the first positioning block, and the second positioning groove is used to accommodate the second positioning block, and the length directions of the first positioning groove and the second positioning groove are both parallel to the length direction of the base.

[0016] According to some preferred implementation aspects of the present invention, the height of the first positioning block is less than or equal to the depth of the first positioning groove, the height of the second positioning block is less than or equal to the depth of the second positioning groove, the first positioning block is provided with a first through hole running through its height direction, and the second positioning block is provided with a second through hole running through its height direction, and both the first through hole and the second through hole are used to accommodate the end of the piece to be tested.

[0017] According to some preferred implementation aspects of the present invention, the length of the first positioning groove is greater than the length of the first groove, the length of the second positioning groove is greater than the length of the second groove, the distance from the end of the first positioning groove away from the second positioning groove to the opening of the first groove is greater than the outer diameter of the end of the piece to be tested, the distance from the end of the second positioning groove away from the first positioning groove to the opening of the second groove is greater than the outer diameter of the end of the piece to be tested, the orthographic projection of the first groove on the top surface of the base is located within the range of the first positioning groove, and the orthographic projection of the second groove on the top surface of the base is located within the range of the second positioning groove.

[0018] Compared with the prior art, the benefits of the present invention lie in that: the present invention is a jig for detecting cylindrical dimensions, which, by providing a measuring plate having a first groove and a second groove and a fixing assembly having multiple fixing grooves of different heights, and then through the mutual cooperation between the various components, enables the side piece to be measured from the side of the first groove and the second groove, so as to measure the cylindrical dimensions in various directions at the same height position and the dimensions in various directions at different heights, which is conducive to improving the accuracy of detection and thus ensuring the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the oil pipe installed on the fixture in the preferred embodiment of the present utility model;

[0021] Figure 2This is a schematic diagram of the three-dimensional structure of the fixture in the preferred embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the top view of the fixture in the preferred embodiment of the present utility model;

[0023] Wherein, the accompanying drawings are marked as follows:

[0024] Base-1, first positioning groove-11, second positioning groove-12, measuring plate-2, first groove-21, second groove-22, fixing assembly-3, first fixing block-31, third groove-311, second fixing block-32, fourth groove-321, fixing groove-33, first positioning block-4, first through hole-41, second positioning block-5, second through hole-51, oil pipe-6. DETAILED DESCRIPTION

[0025] In order to help those skilled in the art better understand the technical solutions of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0026] Reference Figures 1 to 3 The jig for detecting cylindrical dimensions of this embodiment includes a base 1, a measuring plate 2, a fixing assembly 3 fixed to the base 1, and a first positioning block 4 and a second positioning block 5 respectively arranged at both ends of the base 1. The fixing assembly 3 is perpendicular to the measuring plate 2 and the base 1, and the measuring plate 2 is parallel to the base 1 and located above the base 1. The fixing assembly 3 is used to fix the measuring plate 2 at different heights.

[0027] Furthermore, the measurement plate 2 has a first groove 21 and a second groove 22 at each end for inserting the test piece. Both the first groove 21 and the second groove 22 extend through the thickness of the measurement plate 2, with the opening of the first groove 21 extending through one end of the measurement plate 2 and the opening of the second groove 22 extending through the other end. In other words, the first groove 21 and the second groove 22 in this embodiment are both U-shaped grooves, allowing the test piece to be inserted into them from the sides (openings) of the first and second grooves 21, 22 for measurement, facilitating measurement of the cylindrical dimensions of the test piece in various directions at the same height. In this embodiment, the test piece is an oil pipe 6. Furthermore, the width of the first groove 21 can be greater or less than the width of the second groove 22. In this embodiment, the width of the first groove 21 is smaller than the width of the second groove 22, such that the width of the first groove 21 corresponds to the upper limit of the cylindrical dimensions of the oil pipe 6, and the width of the second groove 22 corresponds to the lower limit of the cylindrical dimensions of the oil pipe 6.

[0028] Furthermore, the fixing assembly 3 includes a first fixing block 31 and a second fixing block 32, which are symmetrically arranged. The first fixing block 31 has a plurality of third grooves 311 spaced apart along its length, while the second fixing block 32 has a plurality of fourth grooves 321 spaced apart along its length. The third grooves 311 extend through the thickness of the first fixing block 31, while the fourth grooves 321 extend through the thickness of the second fixing block 32. The third grooves 311 and the fourth grooves 321 are arranged in a one-to-one correspondence, with the center of each third groove 311 and the center of the corresponding fourth groove 321 coplanar. A third groove 311 and a corresponding fourth groove 321 together form a fixing slot 33, into which the measurement plate 2 is inserted to secure it. The length of the fixing slot 33 is parallel to the width of the measurement plate 2. The distance between the adjacent ends of the first groove 21 and the second groove 22 is greater than the depth of the fixing slot 33, ensuring that after the measurement plate 2 is inserted into the fixing slot 33, neither the first groove 21 nor the second groove 22 is covered by the fixing slot 33. The provision of multiple fixing slots 33 in this embodiment facilitates securing the measurement plate 2 at various heights, thereby facilitating measurement of the dimensions of the oil pipe 6 at various heights and in various directions. Furthermore, when the measurement plate 2 is inserted into the fixing slots 33, the outer wall of the measurement plate 2 conforms to the inner walls of the first and second fixing blocks 31, 32, which enclose the fixing slots 33, ensuring the stability of the measurement plate 2.

[0029] Furthermore, a first positioning groove 11 and a second positioning groove 12 are respectively provided at both ends of the base 1 from the top surface downward. The first positioning groove 11 is used to accommodate the first positioning block 4, and the second positioning groove 12 is used to accommodate the second positioning block 5. The length directions of the first positioning groove 11 and the second positioning groove 12 are both parallel to the length direction of the base 1. The first positioning block 4 is arranged corresponding to the first groove 21, and the second positioning block 5 is arranged corresponding to the second groove 22. The height of the first positioning block 4 is less than or equal to the depth of the first positioning groove 11, and the height of the second positioning block 5 is less than or equal to the depth of the second positioning groove 12. In addition, when the first positioning block 4 is located in the first positioning groove 11 or the second positioning block 5 is located in the second positioning groove 12, a portion of the outer wall of the first positioning block 4 is in contact with the inner wall of one end of the first positioning groove 11, and a portion of the outer wall of the second positioning block 5 is in contact with the inner wall of one end of the second positioning groove 12, ensuring that the first positioning block 4 and the second positioning block 5 can only move along the length direction of the base 1 and will not be offset in the width direction of the base 1.

[0030] Specifically, the length of the first positioning groove 11 is greater than the length of the first groove 21, the length of the second positioning groove 12 is greater than the length of the second groove 22, the distance from the end of the first positioning groove 11 away from the second positioning groove 12 to the opening of the first groove 21 is greater than the outer diameter of the end of the piece to be tested, the distance from the end of the second positioning groove 12 away from the first positioning groove 11 to the opening of the second groove 22 is greater than the outer diameter of the end of the piece to be tested, and the orthographic projection of the first groove 21 on the top surface of the base 1 is located within the range of the first positioning groove 11, and the orthographic projection of the second groove 22 on the top surface of the base 1 is located within the range of the second positioning groove 12. In addition, a first through hole 41 is provided on the first positioning block 4 and a second through hole 51 is provided on the second positioning block 5. Both the first through hole 41 and the second through hole 51 are used to accommodate the end of the piece to be tested.

[0031] The following briefly describes the working process of the fixture in this embodiment:

[0032] This jig is placed on the production line for final inspection. After visually inspecting the appearance of the oil pipe 6, workers, following the work instructions, insert the measuring plate 2 into the fixed groove 33 at a certain height. The first positioning block 4 is moved to the end of the first positioning groove 11 away from the second positioning groove 12. The root of the oil pipe 6 is then placed in the first through-hole 41 of the first positioning block 4. The first positioning block 4 and the oil pipe 6 are gradually pushed along the first positioning groove 11 toward the first groove 21. If the oil pipe 6 scrapes against the edge of the first groove 21 or cannot enter the first groove 21, the dimensions of the oil pipe 6 are unqualified. If the oil pipe 6 can directly enter the first groove 21, the cylindrical dimensions in that direction are qualified. The oil pipe 6 is then rotated a certain angle to measure the cylindrical dimensions on the other side of the oil pipe 6. If this also passes, the cylindrical dimensions at this extreme position are considered qualified. This process is repeated to test the cylindrical dimensions of the oil pipe 6 in different directions at this height.

[0033] Then, the oil pipe 6 is taken out, moved to one side of the second positioning block 5 and corresponding measurements are performed in the same manner as above to determine whether the ultimate columnar dimension on the other side is qualified.

[0034] After the columnar dimensions at the same height are determined to be qualified, the height of the measuring plate 2 on the fixing assembly 3 can be adjusted to measure the dimensions of the oil pipe 6 at different heights to confirm whether the columnar dimensions of the oil pipe 6 at different heights are qualified.

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fixture for detecting columnar dimensions, characterized in that: The measuring device comprises a base, a measuring plate and a fixing assembly fixed on the base, wherein the fixing assembly has a plurality of fixing grooves arranged in a vertical direction, the measuring plate is inserted into the fixing grooves, and the two ends of the measuring plate are respectively provided with a first groove and a second groove for inserting the workpiece to be measured, and the two ends of the base are respectively provided with a first positioning block and a second positioning block, the first groove is provided corresponding to the first positioning block, and the second groove is provided corresponding to the second positioning block, and the width of the first groove is greater than or less than the width of the second groove.

2. The jig for detecting columnar dimensions according to claim 1, wherein: The fixing assembly includes a first fixing block and a second fixing block that are symmetrically arranged, and the first fixing block and the second fixing block are both perpendicular to the base.

3. The jig for detecting column size according to claim 2, characterized in that: The first fixing block is provided with a plurality of third grooves spaced apart along its length direction, and the second fixing block is provided with a plurality of fourth grooves spaced apart along its length direction. The third grooves run through the thickness direction of the first fixing block, and the fourth grooves run through the thickness direction of the second fixing block. The third grooves and the fourth grooves are arranged in a one-to-one correspondence.

4. The jig for detecting column size according to claim 3, characterized in that: One of the third grooves and one of the corresponding fourth grooves enclose one of the fixing grooves, and the center of one of the third grooves and the center of the corresponding fourth groove are located on the same horizontal line.

5. The jig for detecting column size according to claim 4, characterized in that: The length direction of the fixing groove is parallel to the width direction of the measuring plate, and the measuring plate is parallel to the base.

6. The jig for detecting column size according to claim 1, characterized in that: The first groove and the second groove both pass through the thickness direction of the measurement plate. The opening of the first groove passes through one end of the measurement plate, and the opening of the second groove passes through the other end of the measurement plate.

7. The jig for detecting column size according to claim 1, characterized in that: The measuring plate is located above the base, and the distance between the ends of the first groove and the second groove that are close to each other is greater than the depth of the fixing groove.

8. The jig for detecting column size according to claim 1, characterized in that: The two ends of the base are respectively provided with a first positioning groove and a second positioning groove from the top surface downward, the first positioning groove is used to accommodate the first positioning block, and the second positioning groove is used to accommodate the second positioning block, and the length directions of the first positioning groove and the second positioning groove are parallel to the length direction of the base.

9. The jig for detecting column size according to claim 8, characterized in that: The height of the first positioning block is less than or equal to the depth of the first positioning groove, the height of the second positioning block is less than or equal to the depth of the second positioning groove, the first positioning block is provided with a first through hole running through its height direction, the second positioning block is provided with a second through hole running through its height direction, and both the first through hole and the second through hole are used to accommodate the end of the test piece.

10. The jig for detecting column size according to claim 9, characterized in that: The length of the first positioning groove is greater than the length of the first groove, the length of the second positioning groove is greater than the length of the second groove, the distance from the end of the first positioning groove away from the second positioning groove to the opening of the first groove is greater than the outer diameter of the end of the piece to be tested, the distance from the end of the second positioning groove away from the first positioning groove to the opening of the second groove is greater than the outer diameter of the end of the piece to be tested, the orthographic projection of the first groove on the top surface of the base is located within the range of the first positioning groove, and the orthographic projection of the second groove on the top surface of the base is located within the range of the second positioning groove.

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