Simple device for drawing gauge length of aluminum alloy circular performance sample

Abstract

The utility model discloses a simple device for drawing a gauge length of an aluminum alloy circular performance sample, which belongs to the technical field of gauge lengths of aluminum alloy samples, solves the problems that the operation is difficult and the marking is easy to generate errors when the gauge length of the aluminum alloy circular performance sample is manually made at present, and comprises a caliper bracket, a sample bracket and a caliper, a sliding rail is arranged on a caliper support bottom plate, vertical groove-shaped caliper support supporting rods are symmetrically arranged on the two sides of the bottom plate, spring columns are arranged at the bottoms in grooves of the caliper support supporting rods, and springs are arranged on the spring columns. A left sample holder supporting rod and a right sample holder supporting rod of the sample bracket are arranged on the slide rail in a sliding manner; the caliper is provided with a fixed measuring claw and a caliper outer measuring claw in a sliding mode, two sides of the caliper are lengthened to be provided with blank caliper bodies, and two ends of the blank caliper bodies are clamped in the caliper support supporting rod grooves in a sliding mode and abut against the tops of the springs. The marking of various scale distances is accurately realized, and the efficiency and the accuracy of marking the scale distances are greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of aluminum alloy specimen gauge length technology, specifically relating to a simple device for drawing the gauge length of circular performance aluminum alloy specimens. Background Technology

[0002] In the field of materials performance research, aluminum alloys are widely used in aerospace, automotive manufacturing, construction engineering, and many other industries due to their advantages such as light weight, high strength, and corrosion resistance. Accurate testing of aluminum alloy material properties is a crucial step in ensuring their safety and reliability in practical applications, and gauge length marking on aluminum alloy performance samples is a fundamental and important step in the entire testing process.

[0003] For aluminum alloy bars and profiles with thick walls, circular performance specimens are generally used to test the performance indicators of aluminum alloys. The determination of elongation relies heavily on the accuracy of gauge length marking. Traditional manual marking methods rely on operators holding a hammer and using a marking drill to mark individual points on the specimen surface to determine the gauge length. This not only demands a high level of experience and skill from the operator but is also inefficient and labor-intensive. Even slight hand tremors can lead to deviations in the marking position, making it difficult to guarantee the accuracy of the gauge length marking and directly affecting the accuracy of subsequent performance test results. In particular, the market currently lacks marking drills that conform to the gauge lengths specified in the British and American Standards (USS). For example, a certain profile produced by our company requires a 50.8mm gauge length, but due to the lack of a 50.8mm marking drill, the specimen is placed next to calipers, and the gauge length is drawn with a pen. However, this operation is prone to specimen or caliper movement, resulting in excessive marking errors or misalignment, leading to low efficiency and unreliable accuracy. These problems are widespread in the industry.

[0004] While some complex specialized equipment can theoretically achieve high-precision gauge length marking, their high purchase cost and substantial investment pose a significant burden for many companies with limited budgets. Furthermore, these devices are bulky, structurally complex, and require specialized technicians for installation, commissioning, and routine maintenance. They also have stringent requirements for the operating environment and supporting facilities, making them somewhat inconvenient to use.

[0005] Furthermore, due to the unique circular geometry of aluminum alloy circular specimens, ordinary tools struggle to achieve stable positioning and uniform marking during gauge length marking. Existing marking drills and methods lack sufficient flexibility and versatility when dealing with aluminum alloy circular specimens of different specifications, failing to quickly and accurately meet diverse gauge length marking needs.

[0006] Given the numerous shortcomings of traditional methods and existing tools in marking the gauge length of circular performance specimens of aluminum alloys, it is urgent to develop a simple tool that is easy to operate, low in cost, reliable in accuracy, and adaptable to specimens of various sizes, so as to promote more efficient and accurate performance testing of aluminum alloy materials. Utility Model Content

[0007] The purpose of this invention is to provide a simple device for marking the gauge length of circular performance specimens of aluminum alloys, so as to solve the problems of difficult operation and easy error in marking the gauge length of circular performance specimens of aluminum alloys when done manually.

[0008] The technical solution of this utility model is: a simple device for drawing the gauge length of a circular performance sample of aluminum alloy, including a caliper bracket, a sample holder, and a caliper. The caliper bracket includes a base plate with a slide rail on the base plate. Vertical groove-shaped caliper bracket support rods are symmetrically arranged on both sides of the base plate. A spring column is provided at the bottom of the groove of the caliper bracket support rod, and a spring is provided on the spring column. The sample holder includes a left sample holder support rod and a right sample holder support rod, which are slidably arranged on the slide rail and are aligned with the caliper bracket support rod. The caliper is provided with a fixed measuring claw and a slidably arranged external measuring claw. The fixed measuring claw and the external measuring claw are located between the left and right sample holder support rods. The fixed measuring claw and the external measuring claw are made of hard pen refillable ink. The caliper has an extended blank ruler body on both sides, and the two ends of the blank ruler body are slidably engaged in the groove of the caliper bracket support rod and abut against the top of the spring.

[0009] As a further improvement of this utility model, a cylindrical sample sleeve is provided at the top of the left sample holder support rod, and a semi-circular sample sleeve is provided at the top of the right sample holder support rod.

[0010] As a further improvement of this utility model, the left sample holder support rod and the right sample holder support rod are provided with locking buckles at the slide rail.

[0011] As a further improvement of this utility model, a scale with the same direction as the slide rail is provided.

[0012] The beneficial effects of this utility model are as follows: During use, adjust and fix the distance between the fixed measuring claw and the outer measuring claw of the caliper according to the gauge length requirements. Based on the sample specifications, adjust the distance between the left and right sample holder support rods using the slide rail and scale. Insert one end of the sample into the sample sleeve on the left support rod of the sample holder, and press the other end into the right semi-circular sample sleeve. Push the sample tightly to the left, press down the caliper with one hand so that the outer measuring claw of the caliper is close to the sample, and push the sample tightly to the left with the other hand while rotating it. One rotation completes the gauge length marking. Release the caliper; the spring will spring it up. Remove the sample and repeat the operation with another sample. Since the aluminum alloy circular performance samples are all standard samples, samples of the same specifications do not require further adjustment after the caliper and sample holder distance is adjusted once. Simply place the sample, press down the caliper, and rotate the sample to complete the gauge length marking.

[0013] This invention addresses the problems of difficulty in manually marking gauge lengths on circular aluminum alloy performance specimens, which is prone to errors, especially the lack of a gauge drill adapted to the gauge lengths specified in the British and American Standards (BUSINESS). It also addresses the difficulty in marking gauge lengths when using BUSINESS tests. The invention provides a simple device for marking gauge lengths on circular aluminum alloy performance specimens, enabling convenient and reliable marking of the required gauge lengths on the specimens, thereby improving the efficiency and accuracy of the tests.

[0014] This utility model has a simple structure, low cost, simple operation, and strong practicality, flexibility and versatility. It can accurately mark various gauge lengths by adjusting the calipers, solving the problem of lacking relevant marking drills. It also effectively fixes and adjusts the calipers and the sample by using a caliper bracket and a sample bracket. The problem of stable positioning and uniform marking of circular samples can be solved by simple rotation, which greatly improves the efficiency and accuracy of marking gauge lengths. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] In the diagram: 1-Blank ruler body; 2-Cylindrical sample sleeve; 3-Left sample holder support rod; 4-Spring; 5-Spring column; 6-Base plate; 7-Caliper bracket support rod; 8-Caliper; 9-Caliper outer measuring jaw; 10-Sample; 11-Semi-circular sample sleeve; 12-Right sample holder support rod; 13-Lock; 14-Slide rail; 15-Scale; 16-Fixed measuring jaw. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1As shown, a simple device for drawing the gauge length of a circular performance sample of aluminum alloy includes a caliper bracket, a sample holder, and a caliper 8. The caliper bracket includes a base plate 6, on which a slide rail 14 is provided. Vertical groove-shaped caliper bracket support rods 7 are symmetrically arranged on both sides of the base plate 6. A spring column 5 is provided at the bottom of the groove of the caliper bracket support rod 7, and a spring 4 is provided on the spring column 5. The sample holder includes a left sample holder support rod 3 and a right sample holder support rod 12, which are slidably mounted on the slide rail 14 and are aligned with the caliper bracket support rods 7. The caliper 8 is provided with a fixed measuring claw 16 and a slidably mounted external measuring claw 9, which are located between the left sample holder support rod 3 and the right sample holder support rod 12. The fixed measuring claw 16 and the external measuring claw 9 are made of hard pen refillable ink. Blank rulers 1 are extended on both sides of the caliper 8, and the two ends of the blank rulers 1 are slidably engaged in the grooves of the caliper bracket support rods 7 and abut against the top of the spring 4.

[0019] The left sample holder support rod 3 has a cylindrical sample sleeve 2 at its top, and the right sample holder support rod 12 has a semi-circular sample sleeve 11 at its top. Both the left and right sample holder support rods 3 and 12 have latches 13 at the slide rail 14. A scale 15, aligned with the slide rail 14, is also located at the slide rail 14.

[0020] Example 1

[0021] The caliper 8 can be modified from a vernier caliper, which improves the reusability of items. The main difference is that the depth gauge on the vernier caliper is removed, and the caliper body is lengthened on both sides. This blank caliper body 1 is used for the support, fixation and distance adjustment of the caliper 8. The end of the blank caliper body 1 is inserted into the caliper bracket support rod 7. The remaining blank part is used to leave the distance between the left and right sample holder support rods and the caliper bracket support rod 7, so as to ensure that after the sample 10 moves with the sample holder, the fixed measuring claw 16 and the external measuring claw 9 of the caliper fall on the working part of the sample 10.

[0022] The caliper bracket support rod 7 is a vertical groove type, with baffles on the front, back and outer three sides to form a cavity. The caliper 8 is inserted into the cavity from the top of the caliper bracket support rod 7 through both ends of the blank ruler body 1. The width of the cavity and the distance between the cavities of the caliper bracket support rod 7 on both sides are just enough to ensure that the blank ruler body 1 at both ends of the caliper 8 can be inserted. This ensures that the caliper 8 cannot move forward, backward or left or right after insertion, but can only move up and down with the cavity of the caliper bracket support rod 7.

[0023] There is a spring post 5 at the bottom of the cavity, and an identical spring 4 is fixed on each spring post 5 to support the blank scale body 1 at both ends of the caliper 8, ensuring that the height of the caliper 8 is higher than the height of the sample holder, and to pop up the caliper 8 after the measurement is completed so that it is removed from the sample 10.

[0024] The two measuring jaws of the caliper 8 are designed with hard pen leads that can be inked. This material ensures the accuracy of the caliper 8. The pen leads are used for drawing gauge marks.

[0025] The base plate 6 has sufficient weight to ensure overall stability. A slide rail 14 is arched in the middle of the base plate 6 directly below the caliper 8 and in the same direction as the caliper 8. The slide rail 14 is used to support and fix the sample holder. The slide rail 14 has a scale 15 to facilitate the positioning of the sample holder.

[0026] The left and right sample holder support rods are distributed at the same height perpendicular to the caliper 8. Each support rod has a buckle 13 at the bottom, which fits onto the arched slide rail 14. When the buckle 13 is open, the left and right sample holder support rods can slide freely left and right. When the buckle 13 is closed, the left and right sample holder support rods are fixed on the slide rail 14. The distance between the left and right sample holder support rods can be adjusted by moving them. This also ensures that the place where the gauge mark needs to be drawn on the sample 10 is aligned with the caliper 8.

[0027] With the side of the caliper at zero mark 8 as the left side, the top of the left sample holder support rod 3 is horizontally connected to a hollow cylindrical sample sleeve 2 with an open right end. The cylindrical sample sleeve 2 is used for the horizontal insertion of one end of the sample 10. The solid inner wall of the left end of the cylindrical sample sleeve 2 ensures that the sample 10 will not move left or right when rotating. The top of the right sample holder support rod 12 is horizontally connected to a semi-circular sample sleeve 11, which is used to support the sample 10.

[0028] A certain profile produced in the industry conforms to ASTM-B-557. Performance specimen 10 is circular, with a total length of 140mm and a parallel length of 57.2mm. The original gauge length requirement is 50.8mm. When using this device to mark the gauge length, first adjust the caliper 8 according to the gauge length requirement, ensuring the distance between the fixed measuring jaw 16 and the outer measuring jaw 9 of the caliper is 50.8mm, and then fix it. Insert one end of specimen 10 into the cylindrical specimen sleeve 2 on the left specimen holder support rod 3, and press the other end into the right semi-circular specimen sleeve 11. Use the slide rail 14 and scale 15 to precisely adjust the distance between the left and right specimen holder support rods, aligning the fixed measuring jaw 16 and the outer measuring jaw 9 of the caliper with the parallel portion of specimen 10.

[0029] Push the sample 10 to the left with one hand, and press down on the caliper 8 with the other hand, so that the fixed measuring jaw 16 and the outer measuring jaw 9 of the caliper are close to the sample 10. Push the sample 10 to the left and rotate it. One rotation completes the gauge mark. Release the caliper 8, and the spring 4 will spring the caliper 8 up. Remove the sample 10 and repeat the operation with another sample 10. Because the aluminum alloy circular performance samples 10 are all standard samples 10, samples of the same specification do not need to be adjusted after the distance between the caliper 8, the sample holder, and the caliper holder is adjusted once. Simply place the sample 10, press down on the caliper 8, and rotate the sample 10 to perform the gauge mark operation.

Claims

1. A simple device for drawing the gauge length of a circular performance specimen of aluminum alloy, characterized in that: The system includes a caliper bracket, a sample holder, and a caliper (8). The caliper bracket includes a base plate (6), on which a slide rail (14) is provided. Vertical groove-shaped caliper bracket support rods (7) are symmetrically arranged on both sides of the base plate (6). A spring column (5) is provided at the bottom of the groove of the caliper bracket support rod (7), and a spring (4) is provided on the spring column (5). The sample holder includes a left sample holder support rod (3) and a right sample holder support rod (12). The left sample holder support rod (3) and the right sample holder support rod (12) are slidably mounted on the slide rail (14) and are in contact with the caliper. The support rods (7) of the bracket are located in the same straight line; the caliper (8) is provided with a fixed measuring claw (16) and a sliding external measuring claw (9). The fixed measuring claw (16) and the external measuring claw (9) are located between the left sample holder support rod (3) and the right sample holder support rod (12). The fixed measuring claw (16) and the external measuring claw (9) are hard pen refills that can be inked. The caliper (8) is extended on both sides and has a blank ruler body (1). The two ends of the blank ruler body (1) are slidably locked in the groove of the caliper bracket support rod (7) and abut against the top of the spring (4).

2. The simple device for drawing the gauge length of a circular performance specimen of aluminum alloy according to claim 1, characterized in that: The left sample holder support rod (3) has a cylindrical sample sleeve (2) at the top, and the right sample holder support rod (12) has a semi-circular sample sleeve (11) at the top.

3. A simple device for drawing the gauge length of a circular performance specimen of aluminum alloy according to claim 1 or 2, characterized in that: The left sample holder support rod (3) and the right sample holder support rod (12) are provided with a latch (13) at the slide rail (14).

4. The simple device for drawing the gauge length of a circular performance specimen of aluminum alloy according to claim 3, characterized in that: A scale (15) is provided at the slide rail (14) in the same direction as the slide rail (15).

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