Rapid scale distance engraving device for tensile sample

Abstract

The utility model belongs to the technical field of metal tensile tests, and relates to a rapid scale distance engraving device for a tensile sample, which comprises a scale distance disc, a scale distance shaft, a side plate and a bottom plate, the scale distance disc is cylindrical, two groups of disc-shaped parallel scale distance cutters protruding outwards in the radial direction are arranged on the outer circumferences of the two ends of the cylinder of the scale distance disc, and internal threads are arranged on the inner wall of the cylinder of the scale distance disc; the scale distance shaft is in a multi-step shaft shape with the thick middle and the two thin ends, external threads are arranged on the step shaft in the middle of the scale distance shaft and matched with the internal threads, and square shaft ends are arranged at the two ends of the scale distance shaft respectively; the two side plates are arranged, the bottoms of the side plates are connected with the two ends of the bottom plate respectively, square holes are formed in the side plates, and the square holes are matched with the square shaft ends. According to the utility model, the measurement accuracy can be ensured, the original scale distance can be accurately drawn according to the standard requirement, and the scale distance accuracy can generally reach + / -0.1 mm.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal tensile testing and relates to a device for quickly marking gauge length of a tensile specimen. Background Art

[0002] The material tensile test is a test method used to evaluate the mechanical properties of a material when subjected to a tensile load. During the test, the specimen is clamped on a testing machine and a gradually increasing tensile force is applied until it breaks. By recording data such as the stress, strain, load and elongation of the specimen during the tensile process, key performance indicators such as the tensile strength, yield strength, and elongation after fracture of the material can be determined. Before the tensile test, marks are usually engraved on the specimen, the main purpose of which is to accurately measure the deformation of the specimen during the tensile process. These marks are used to calibrate the original gauge length of the specimen and measure its elongation after the specimen breaks, so as to calculate the important plasticity indicator, the elongation after fracture. In addition, the marks can also help observe the local deformation behavior of the specimen during the tensile process, which facilitates the analysis of the fracture characteristics and mechanical response of the material. Therefore, in the material tensile test, accurately marking the original gauge length is crucial for determining the mechanical performance parameters of the material such as elongation and strain.

[0003] However, existing methods for marking gauge lengths on tensile specimens include manual marking and marking machines. Manual marking is simple and convenient, but is prone to human error, and is difficult to precisely control line width and depth, resulting in low marking accuracy and difficulty ensuring gauge length consistency. While marking machines are highly efficient, they can damage the specimen surface, affecting local mechanical properties testing. Scratches from original marking instruments can also cause surface damage, affecting local mechanical properties.

[0004] Therefore, a simple, efficient, fast and non-damaging gauge length engraving device or engraving gauge length method is needed to solve this problem. Utility Model Content

[0005] The technical solution adopted by the utility model to solve the technical problem is: a device for quickly engraving a gauge length of a tensile specimen, comprising: a gauge disk, a gauge shaft, side plates, and a bottom plate; the gauge disk is cylindrical, and two groups of disc-shaped gauge knives that are parallel to each other and protrude radially outward are provided on the outer circumference of the cylinder at both ends of the gauge disk, and the inner wall of the gauge disk cylinder is provided with an internal thread; the gauge shaft is in the shape of a multi-step shaft that is thick in the middle and thin at both ends, and the stepped shaft in the middle section of the gauge shaft is provided with an external thread that matches the internal thread, and square shaft ends are respectively provided at both ends of the gauge shaft; two side plates are provided, and the bottoms of the side plates are respectively connected to the two ends of the bottom plate, and the side plates are provided with square holes that match the square shaft ends; the gauge disk is provided with multiple different models, and the spacing between the two gauge knives on the gauge disks of different models is different; when engraving the gauge length, the specimen is parallel to the gauge shaft and then engraved around the gauge knives, or the engraving gauge device is engraved around the specimen.

[0006] Preferably, the models of the gauge disk include 12#, 18#, and 25#, and the spacing between the gauge knives on the 12#, 18#, and 25# gauge disks are 12mm, 18mm, and 25mm, respectively.

[0007] Preferably, the gauge knife is made of high-speed steel.

[0008] Preferably, the square hole is located at the edge of the side plate, and a hole wall on one side of the square hole passes through the edge of the side plate.

[0009] More preferably, the lower portion of the side panel is rectangular, the upper portion of the side panel is triangular or trapezoidal, and the square hole is located at the hypotenuse of the triangle or trapezoid at the upper portion of the side panel.

[0010] Preferably, the bottom plate is in the shape of a cuboid.

[0011] More preferably, mounting screw holes are provided at both ends of the bottom plate, countersunk holes are provided at the bottom of the side plates, and the side plates are connected to the bottom plate by bolts via the countersunk holes and the mounting screw holes.

[0012] The beneficial effects of the utility model are:

[0013] 1. This utility model can ensure measurement accuracy and can accurately draw the original scale length according to standard requirements. The scale length accuracy can usually reach ±0.1mm, reducing experimental errors caused by inaccurate marking and being more reliable.

[0014] 2. The utility model can reduce the discreteness of the error, the repeatability of the profiler is high, the measurement error is extremely small, and the test gauge accuracy of the same type of material, different specimens, or different batches can be kept highly consistent.

[0015] 3. The utility model reduces the workload of operators in drawing gauges to complete a large number of tests in a short period of time, greatly shortens the test preparation time, and thus has high gauge efficiency and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view schematic diagram of a device for quickly marking gauge length of a tensile specimen according to the present invention;

[0017] Figure 2 This is a drawing of the gauge shaft parts of the present utility model;

[0018] Figure 3 This is a parts diagram of the gauge plate of the present utility model;

[0019] Figure 4 It is the side panel parts diagram of the utility model;

[0020] Figure 5 This is a bottom plate parts diagram of the utility model.

[0021] In the figure, 1. Gauge plate; 2. Gauge shaft; 3. Side plate; 4. Bottom plate; 5. Gauge knife; 6. Internal thread; 7. External thread; 8. Square shaft end; 9. Square hole; 10. Mounting screw hole; 11. Countersunk hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technologies in 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 are within the scope of protection of the present invention.

[0023] refer to Figures 1 to 5 As shown, a device for quickly marking gauge length of a tensile specimen according to this specific embodiment includes: a gauge disk 1, a gauge shaft 2, a side plate 3, and a bottom plate 4;

[0024] The gauge disk 1 is cylindrical, and two sets of parallel, disc-shaped gauge cutters 5 are provided on the outer circumference of both ends of the cylinder, projecting radially outward. The inner wall of the cylinder of the gauge disk 1 is provided with an internal thread 6. The blades of the two gauge cutters 5 are parallel to each other. Therefore, a gauged specimen can be obtained by drawing the specimen on the blades of the gauge cutters 5 on both sides of the gauge disk 1 at once, which improves the gauge effect and efficiency.

[0025] The gauge shaft 2 is in the shape of a multi-stepped shaft with a thick middle and thin ends. An external thread 7 is provided on the stepped shaft in the middle section of the gauge shaft 2, and the external thread 7 matches the internal thread 6. Square shaft ends 8 are provided at both ends of the gauge shaft 2. The gauge shaft 2 is used to fit the gauge disk 1, and then the gauge disk 1 is fixed to the engraved gauge device, which makes it convenient for the operator to perform specimen calibration.

[0026] There are two side panels 3, the bottoms of which are connected to the two ends of the bottom panel 4 respectively. There are square holes 9 on the side panels 3, which match the square shaft ends 8. After the side panels 3 and the bottom panel 4 are installed, they serve as the base of the gauge shaft 2, providing a mounting base for the gauge shaft 2 and the gauge disk 1.

[0027] The gauge disk 1 is provided with a plurality of different models, and the spacing between the two gauge cutters 5 on the gauge disks 1 of different models is different; the gauge disks 1 of different models are used to mark the specimen spacing of different standards, and the gauge disk 1 is detachably connected to the gauge shaft 2 by a thread, so that a base of a side plate 3 and a bottom plate 4 can be adapted to a plurality of models of gauge disks 1, and replacement and gauge operation can be performed according to different gauge requirements;

[0028] When marking the gauge length, the specimen is placed parallel to the gauge axis 2 and then marked around the gauge knife 5, or the marking gauge length device is placed around the specimen and marked.

[0029] Furthermore, the models of the gauge disk 1 include 12#, 18#, and 25#, and the spacing between the gauge knives 5 on the 12#, 18#, and 25# gauge disks 1 are 12mm, 18mm, and 25mm, respectively.

[0030] Furthermore, the gauge knife 5 is made of high-speed steel; high-speed steel can provide better hardness to the gauge knife 5, thereby reducing the wear of the gauge knife 5 and extending the service life of the gauge knife 5.

[0031] Furthermore, the square hole 9 is located at the edge of the side plate 3, and one side wall of the square hole 9 passes through the edge of the side plate 3; the square hole 9 with a through edge makes the installation of the gauge shaft 2 more convenient, and there is no need to dismantle the connection between the side plate 3 and the bottom plate 4. It is only necessary to snap the square shaft ends 8 at both ends of the gauge shaft 2 into the square hole 9 in a position perpendicular to the axial direction, so replacing the gauge disk 1 is more convenient and quick.

[0032] Furthermore, the lower portion of the side panel 3 is rectangular, the upper portion of the side panel 3 is triangular or trapezoidal, and the square hole 9 is located at the hypotenuse of the triangle or trapezoid on the upper portion of the side panel 3 .

[0033] Furthermore, the bottom plate 4 is in a rectangular parallelepiped shape.

[0034] Furthermore, mounting screw holes 10 are provided at both ends of the bottom plate 4 , and countersunk holes 11 are provided at the bottom of the side plate 3 . The side plate 3 and the bottom plate 4 are connected by bolts via the countersunk holes 11 and the mounting screw holes 10 .

[0035] Example

[0036] The gauge marking device in this embodiment is constructed as a frame. The side panels 3 are interconnected, forming a triangular upper portion and a rectangular lower portion. These two side panels 3 are connected to the bottom panel 4 on either side. Within this frame, a gauge marking cavity is defined. This area's shape ensures the accuracy of the gauge lines. To improve experimental efficiency, the gauge disk 1, gauge shaft 2, side panels 3, and bottom panel 4 are respectively formed from high-speed steel and 304 stainless steel. The gauge disk 1 is connected to each side of the upper portion of the side panel 3, integrating the three marking cavities. High-precision scale markings ensure accurate identification of the original gauge dimensions required by various standards.

[0037] Working Principle: The gauge plate 1, gauge shaft 2, side plates 3, and base plate 4 are each made of wear-resistant, high-hardness materials, offering excellent hardness and wear resistance, ensuring mold dimensional accuracy and gauge clarity even during frequent use. The gauge marking device features a user-friendly connection structure, allowing the user to accurately draw the original gauge length on the specimen.

[0038] In summary, the utility model can ensure measurement accuracy and can accurately draw the original scale length according to standard requirements. The scale length accuracy can usually reach ±0.1mm, reducing experimental errors caused by inaccurate marking and being more reliable.

[0039] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for quickly marking gauge length of a tensile specimen, characterized in that: include: Gauge plate (1), gauge shaft (2), side plate (3), bottom plate (4); The gauge disk (1) is cylindrical, and two sets of disc-shaped gauge knives (5) protruding radially outward and parallel to each other are provided on the outer circumference of the two ends of the cylinder of the gauge disk (1), and the inner wall of the cylinder of the gauge disk (1) is provided with an internal thread (6); The gauge shaft (2) is in the shape of a multi-stepped shaft with a thick middle section and thin ends. An external thread (7) is provided on the stepped shaft in the middle section of the gauge shaft (2). The external thread (7) matches the internal thread (6). Square shaft ends (8) are provided at both ends of the gauge shaft (2). The side panels (3) are provided with two pieces, the bottoms of the side panels (3) are respectively connected to the two ends of the bottom panel (4), and the side panels (3) are provided with square holes (9), and the square holes (9) match the square shaft ends (8); The gauge disk (1) is provided with a plurality of different models, and the distance between the two gauge knives (5) on the gauge disks (1) of different models is different; When marking the gauge length, the specimen is parallel to the gauge axis (2) and then engraved around the gauge knife (5), or the engraving gauge length device is engraved around the specimen.

2. A device for quickly marking gauge length of a tensile specimen according to claim 1, characterized in that: The models of the gauge disk (1) include 12#, 18#, and 25#, and the spacings of the gauge knives (5) on the 12#, 18#, and 25# gauge disks (1) are 12mm, 18mm, and 25mm, respectively.

3. A device for quickly marking gauge length of a tensile specimen according to claim 1, characterized in that: The gauge knife (5) is made of high-speed steel.

4. A device for quickly marking gauge length of a tensile specimen according to claim 1, characterized in that: The square hole (9) is located at the edge of the side plate (3), and a hole wall on one side of the square hole (9) passes through the edge of the side plate (3).

5. A device for quickly marking gauge length of a tensile specimen according to claim 4, characterized in that: The lower portion of the side plate (3) is rectangular, the upper portion of the side plate (3) is triangular or trapezoidal, and the square hole (9) is located at the hypotenuse of the triangle or trapezoid on the upper portion of the side plate (3).

6. A device for quickly marking gauge length of a tensile specimen according to claim 1, characterized in that: The bottom plate (4) is in the shape of a cuboid.

7. A device for quickly marking gauge length of a tensile specimen according to claim 6, characterized in that: Mounting screw holes (10) are provided at both ends of the bottom plate (4), countersunk holes (11) are provided at the bottom of the side plate (3), and the side plate (3) and the bottom plate (4) are bolted together via the countersunk holes (11) and the mounting screw holes (10).

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