A screw gauge quick measuring ruler

Abstract

The utility model relates to bolt specification identification tool field, concretely is a kind of screw specification quick measuring scale, comprising: measuring scale body, first partition and second partition are provided on measuring scale body, multiple length measurement grooves of different cross-sectional area are set up on first partition, length measurement groove is in through slot, the cross section along the length axis of length measurement groove is semicircular, and scale line and length size mark are set along the length axis of length measurement groove;The end of length measurement groove is set semicircular diameter size mark;Second partition is equipped with the circular measuring hole of different cross-sectional area, and semicircular diameter size mark corresponding with circular measuring hole is set up. The utility model realizes the accurate measurement of different specifications screw through the innovative combination of semicircular length measurement groove and circular measuring hole, realizes the synchronous measurement of outer diameter and length by semicircular length measurement groove, also improves measurement accuracy by pre-filtering and post-verification of circular measuring hole.

Description

Technical Field

[0001] This utility model relates to the field of bolt specification identification tools, specifically a screw specification quick measuring ruler. Background Technology

[0002] Screws, as fasteners, come in a variety of sizes and specifications. In industrial fields where high precision is required, the specifications of the screws used are subject to very strict requirements.

[0003] CN113074607A discloses a simple device for identifying bolt specifications, comprising a device body with an upward-opening measuring working groove in the middle of the device body. The measuring working groove extends along the length of the device body and passes through both ends. An auxiliary body movable along the length of the measuring working groove is disposed within the measuring working groove. The device body has a length measuring working surface for measuring the length of the bolt to be measured and a diameter measuring working surface for measuring the diameter of the bolt to be measured, the length measuring working surface and the diameter measuring working surface being arranged perpendicularly. The shank of the bolt to be measured can be pushed by the diameter measuring working surface perpendicularly penetrating into the measuring working groove to move the auxiliary body, thereby measuring the length and diameter specifications of the bolt to be measured.

[0004] The device described above is designed to be small and easy to use. However, during measurement, an auxiliary body needs to be moved to obtain dimensional data. The accuracy of this movement may be affected by the clearance between the auxiliary body and the measuring working groove. Moreover, the length and diameter specifications are determined only once by the position of the auxiliary body and the stepped limiting edge, making verification impossible. This can lead to measurement errors after the measuring working groove wears down, affecting its usability. Utility Model Content

[0005] To address the problems in the existing technology, this utility model provides a quick screw specification measuring ruler.

[0006] This utility model is achieved through the following technical solution: A screw specification quick measuring ruler includes: a measuring ruler body, a first section and a second section on the measuring ruler body, a plurality of length measuring grooves with different cross-sectional areas opened on the first section, the length measuring grooves being through grooves, the cross-section of the length measuring grooves along the length axis being semi-circular, and scale lines and length dimension markings being provided along the length axis of the length measuring grooves; and semi-circular screw head dimension markings and screw head scale lines being provided at the ends of the length measuring grooves. The second section is equipped with circular measuring holes of different cross-sectional areas, and the diameter dimensions corresponding to the circular measuring holes are marked.

[0007] Preferably, in the first partition, the length measuring grooves are arranged in order of cross-sectional size. Preferably, the screw head size markings and screw head scale lines are located on the measuring scale body below the length axis of the length measuring groove. Preferably, in the second partition, the circular measuring holes are divided into two rows.

[0008] Preferably, one row is arranged with a gradually increasing cross-sectional area, and the other row is arranged with a gradually decreasing cross-sectional area.

[0009] Preferably, the corners of the measuring ruler are chamfered.

[0010] Preferably, the side with the length measuring groove is the front of the measuring ruler, and symmetrical oblique grooves are provided on the back of the measuring ruler.

[0011] Preferably, the inclined groove is provided with a detachable anti-slip strip. Preferably, the anti-slip strip is made of a flexible material. Preferably, the back of the measuring ruler is also provided with an elastic sheet connected by a torsion spring.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses a rapid screw specification measuring ruler that innovatively combines a semi-circular length measuring groove and a circular measuring hole. The semi-circular length measuring groove adapts to the screw's shank contour, enabling simultaneous measurement of outer diameter and length. The circular measuring hole serves as an auxiliary measuring unit, improving measurement accuracy through pre-screening and post-verification. Furthermore, it eliminates the need for specialized auxiliary components, making the measurement process simpler and more convenient. Simultaneously, this measuring ruler has a simple structure, is easy to manufacture, and is convenient to operate. It can quickly and accurately measure most common and frequently used screw specifications, and is suitable for the rapid measurement of screws, bolts, studs, and other fastener specifications.

[0013] Furthermore, the sloping grooves and anti-slip strips make it easier for staff to pick up the items.

[0014] Furthermore, the elastic sheet connected by the torsion spring facilitates the fixation of the measuring ruler by the staff, making it easy to carry. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a screw specification quick measuring ruler according to this utility model; Figure 2 This is a schematic diagram of a screw specification quick measuring ruler during testing according to this utility model; Figure 3 This is a top view of a screw specification quick measuring ruler during testing according to this utility model; Figure 4 This is a side view of a screw specification quick measuring ruler during testing, according to this utility model.

[0016] In the diagram, 1. Measuring ruler body; 11. Length measuring groove; 12. Length scale line; 13. Length dimension marking; 14. Screw head marking line; 15. Screw head dimension marking; 16. Screw head chamfer; 17. Circular measuring hole; 2. Screw being measured; 21. Screw head; 22. Threaded part; 23. Screw tail. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to specific embodiments. The description is for explanation and not limitation of the present invention.

[0018] This utility model discloses a quick screw specification measuring ruler, referring to... Figure 1 The system includes: a measuring scale 1, with a first section and a second section on the measuring scale 1; multiple length measuring grooves 11 with different cross-sectional areas are formed in the first section; the length measuring grooves 11 are through grooves; the cross-section of the length measuring grooves 11 along the length axis is semi-circular; length scale lines and length dimension markings 13 are set along the length axis of the length measuring grooves 11; semi-circular screw head dimension markings 15 and screw head scale lines are set at the ends of the length measuring grooves 11. In the first section, the length measuring grooves 11 are arranged in order of cross-sectional size. The screw head dimension markings 15 and screw head scale lines are set on the measuring scale 1 below the length axis of the length measuring grooves 11. The length measuring groove 11 is not only used for length measurement, but also indirectly reflects the outer diameter through changes in groove depth and curvature. Each groove corresponds to a specific outer diameter range. After the screw is inserted, its length can be directly visually estimated using a scale on the side of the groove, without the need for auxiliary tools. In one embodiment, with the center line between the first and second partitions as the boundary, the cross-sectional area of ​​the length measuring groove 11 gradually decreases from the side closest to the center line. For example, the diameter is distributed from small to large. 2. 2.5 3. 4. 5. 6. 8. 10 can measure screws with outer diameters of M2, M2.5, M3, M4, M5, M6, M8, and M10 respectively. The corresponding diameter marking 15 is engraved on both sides of the measuring scale 110.

[0019] When measuring both the screw length and outer diameter, such as Figure 2 , 3As shown in Figure 4, the screw head is placed tightly against both sides of the measuring ruler 1, and the threaded portion 22 is placed in the semi-circular length measuring groove 11. The outer diameter of the screw 2 is determined based on the fit between the threaded portion 22 and the length measuring groove 11, and the degree of overlap between the screw head 21 and the screw head marking. The outer diameter is read through the screw head dimension marking 15. The screw tail 23 must be aligned with a certain length marking, and the length dimension marking 13 of the screw 2 can be read.

[0020] Length scale lines 12 are displayed on one side of the length measuring groove 11 and are distributed along the axial direction of the length measuring groove 11. The length scale lines 12 are made according to the national standard for screw length, and the scale values ​​are distributed from smallest to largest as follows: 2.5, 3, 4, 5, 6, 8, 10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 55, and 60. The length range markings 13 are marked according to different outer diameter screws, such as M2 corresponding to a range of 3~20, M2.5 corresponding to a range of 4~25, M3 corresponding to a range of 5~30, M4 corresponding to a range of 6~40, M5 corresponding to a range of 8~50, M6 corresponding to a range of 10~60, M8 corresponding to a range of 12~60, and M10 corresponding to a range of 16~60.

[0021] The screw head markings 14 are located on both sides of the measuring scale 1, coaxial with the length measuring groove 11, and their diameter is the same as the outer diameter of the screw head 21 of the screw being measured with the corresponding nominal diameter. For example, M2, M2.5, M3, M4, M5, M6, M8, and M10 correspond to screw head markings 14 diameters of φ3.8, φ4.5, φ5.5, φ7, φ8.5, φ10, φ13, and φ16, respectively. The screw head chamfers 16 are located at both ends of the length measuring groove 11 to prevent the screw head radius of the screw being measured from being too large, which would cause measurement errors in length.

[0022] The second section is provided with circular measuring holes 17 with different cross-sectional areas, and the diameter dimension is marked accordingly for the circular measuring holes 17.

[0023] In one embodiment, the circular measuring holes 17 in the second partition are divided into two rows. One row is arranged with gradually increasing cross-sectional area, and the other row is arranged with gradually decreasing cross-sectional area.

[0024] For example, the diameter of the circular measuring hole 17 is distributed from small to large. 1.6 2. 2.5 3. 4. 5. 6. 8. 10. 12. Insert the screw 2 to be tested into the circular measuring hole 17, and determine the outer diameter of the screw 2 to be tested based on the fit.

[0025] In one embodiment, the corners of the measuring ruler 1 are chamfered to prevent injury to the operator.

[0026] The side with the length measuring groove 11 is the front of the measuring ruler 1, and symmetrical oblique grooves are formed on the back of the measuring ruler 1. Detachable anti-slip strips are provided on the oblique grooves. The anti-slip strips are made of flexible materials such as rubber or silicone. The back of the measuring ruler 1 is also equipped with an elastic plate connected by a torsion spring, which improves the practicality and portability of the tool. The elastic plate connected by the torsion spring adopts a special mechanical structure, which realizes the clamping function through the elastic deformation of the torsion spring, and can easily fix the measuring ruler 1 to a pocket, tool belt or work clothes.

[0027] When the circular measuring hole 17 is used for pre-positioning, the operator first inserts the screw into the hole and preliminarily determines the outer diameter specification through the matching degree (for example, the hole diameter corresponds to the standard screw size such as M6, M8, etc.), thereby guiding the subsequent selection of the appropriate semi-circular length measuring groove 11.

[0028] When the circular measuring hole 17 is used as a follow-up step, it is used to verify the measurement results of the semi-circular groove, thereby improving reliability. For example, after the screw is measured in the semi-circular groove, it is then inserted into the circular hole to confirm the outer diameter, avoiding deviations caused by groove wear or visual errors.

[0029] This utility model discloses a quick screw gauge. In use, after the screw 2 to be measured is placed into the length measuring slot 11, its shank fits against the slot wall. The length is directly read through the length dimension marking 13, while the outer diameter is displayed through the dimension marking on the screw head. The entire process requires no manual adjustment of components, achieving the ideal effect of simply placing the screw in for visual inspection. In the pre-positioning mode, the operator first uses the circular measuring hole 17 to quickly determine the screw's outer diameter and selects a matching semi-circular length measuring slot 11 based on the result. In the post-positioning mode, a secondary check is performed through the circular measuring hole 17 to ensure measurement accuracy. This compensates for the potential inaccuracies of purely visual inspection and improves quality control.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the technical solution of the present utility model in any way. Those skilled in the art should understand that, without departing from the spirit and principles of the present utility model, the technical solution can be modified and replaced in several simple ways, and these modifications and replacements are all within the scope of protection covered by the claims.

Claims

1. A quick-measurement ruler for screw specifications, characterized in that, include: A measuring ruler (1) is provided with a first section and a second section. Multiple length measuring grooves (11) with different cross-sectional areas are opened on the first section. The length measuring grooves (11) are through grooves. The cross-section of the length measuring grooves (11) along the length axis is semi-circular. Scale lines and length dimension markings (13) are set along the length axis of the length measuring grooves (11). Semi-circular screw head dimension markings (15) and screw head scale lines are set at the ends of the length measuring grooves (11). The second section is provided with circular measuring holes (17) with different cross-sectional areas, and the diameter dimension is marked with the corresponding circular measuring holes (17).

2. The screw specification quick measuring ruler according to claim 1, characterized in that, In the first section, the length measuring grooves (11) are arranged in order of cross-sectional size.

3. The screw specification quick measuring ruler according to claim 1, characterized in that, The screw head size marking (15) and screw head scale line are set on the measuring ruler (1) below the length axis of the length measuring groove (11).

4. The screw specification quick measuring ruler according to claim 1, characterized in that, In the second section, the circular measuring holes (17) are divided into two rows.

5. The screw specification quick measuring ruler according to claim 4, characterized in that, One row is arranged with gradually increasing cross-sectional area, and the other row is arranged with gradually decreasing cross-sectional area.

6. The screw specification quick measuring ruler according to claim 1, characterized in that, The measuring ruler (1) has chamfered edges at its corners.

7. The screw specification quick measuring ruler according to claim 1, characterized in that, The side with the length measuring groove (11) is the front of the measuring ruler (1), and symmetrical oblique grooves are provided on the back of the measuring ruler (1).

8. The screw specification quick measuring ruler according to claim 7, characterized in that, The inclined groove is equipped with a detachable anti-slip strip.

9. The screw specification quick measuring ruler according to claim 7, characterized in that, The anti-slip strips are made of flexible materials.

10. The screw specification quick measuring ruler according to claim 7, characterized in that, The back of the measuring ruler (1) is also provided with an elastic sheet connected by a torsion spring.

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