Rapid marking device for gauge length of tensile sample

Abstract

The utility model discloses a tensile sample scale distance rapid marking device, which relates to the field of tensile test tools, and comprises a moving seat, which is slidably arranged along the length direction of a lathe and is provided with an operation hole, and a knife rest is rotatably arranged in the operation hole; the marking pen is arranged on the knife rest and can synchronously rotate along with the knife rest; the chuck is arranged on the lathe, and when the movable base moves to be close to the chuck, the tool rest rotates with the axis of the chuck as the center; according to the device, when the sample is processed, the scale distance is marked, the step of transferring the sample is reduced, the labor intensity is reduced, the working efficiency is improved, and the method is clear in marking and does not leave nicks on the tensile sample.

Description

Technical Field

[0001] The utility model belongs to the field of tensile test tools, and more specifically, relates to a device for quickly marking the gauge length of a tensile specimen. Background Art

[0002] A tensile test refers to a test for determining a series of properties of a material under a tensile load. It is one of the basic methods for testing the mechanical properties of materials, mainly used to check whether the material meets the specified standards and to study the properties of the material. The tensile test can determine a series of strength indexes and plastic indexes of the material. Plasticity refers to the ability of a metal material to produce plastic deformation under a load without being damaged. The commonly used plastic indexes are elongation and reduction of area. Elongation, also known as percentage elongation, is the percentage of the ratio of the total elongation to the original length after the material specimen is broken under a tensile load.

[0003] Currently, to mark the original gauge length, an inspector needs to transfer the processed tensile specimen to a gauge marking instrument for marking. This operation method increases the extra workload and reduces the work efficiency. Moreover, using a gauge marking instrument to mark the specimen will leave slight scratches on the specimen. If the scratches are too shallow, when the tensile specimen is subjected to a tensile test, due to the elongation of the tensile specimen, the scratches will disappear, resulting in the inability to measure the gauge length after fracture and leading to the failure of the test. If the scratches are too deep, a crack source will be formed on the tensile specimen, and the tensile specimen will fracture prematurely at the scratch before reaching the maximum force, resulting in the failure of the test. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for quickly marking the gauge length of a tensile specimen in view of the deficiencies of the existing technology. When the specimen is processed, the gauge length is marked simultaneously, reducing the steps of transferring the specimen, reducing the labor intensity, and improving the work efficiency. Moreover, this method has clear markings and will not leave scratches on the tensile specimen.

[0005] To achieve the above purpose, the utility model provides a device for quickly marking the gauge length of a tensile specimen, including:

[0006] A moving seat, slidably arranged along the length direction of the lathe. An operation hole is provided on the moving seat, and a tool holder is rotatably arranged in the operation hole.

[0007] A marking pen, arranged on the tool holder, and the marking pen can rotate synchronously with the tool holder.

[0008] A chuck, arranged on the lathe. When the moving seat moves close to the chuck, the tool holder rotates around the axis of the chuck.

[0009] Optionally, a first fixing groove is provided on the tool holder, and the first fixing groove is detachably connected to the marking pen.

[0010] Optionally, a second fixing groove is provided on the tool rest, and the second fixing groove is detachably connected to the turning tool.

[0011] Optionally, the opening directions of the first fixing groove and the second fixing groove are exactly opposite.

[0012] Optionally, a third fixing groove is provided at the center of the chuck, and one end of the tensile specimen is connected to the third fixing groove.

[0013] Optionally, a position monitoring probe is provided on the moving seat, and the output end of the position monitoring probe faces the tensile specimen.

[0014] Optionally, a telescopic arm is slidably provided on the inner wall of the operation hole. The telescopic arm is connected to the tool rest, and the telescopic direction of the telescopic arm is parallel to the radial direction of the chuck.

[0015] Optionally, the middle part of the tool rest is rotatably connected to the telescopic arm.

[0016] Optionally, the marking pen is a paint pen.

[0017] Optionally, a scale is provided on the lathe along the length direction.

[0018] The utility model provides a device for quickly marking the gauge length of a tensile specimen, and the beneficial effects are as follows: The marking device is also provided with a marking pen on the tool rest. After the tensile specimen is processed, it is only necessary to adjust the marking pen to face the tensile specimen, and the tensile specimen can be marked without transferring it to a gauge length instrument, saving operation steps, eliminating special marking equipment, reducing the economic cost invested in the specimen preparation process. In addition, the marking pen is a paint pen, which will not affect the strength of the tensile specimen, and the gauge length mark drawn by the paint pen is very clear, meeting the operation requirements of the tensile test.

[0019] Other features and advantages of the utility model will be described in detail in the following specific implementation manner section. Description of the Drawings

[0020] By describing the exemplary embodiments of the utility model in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the utility model will become more obvious. Among them, in the exemplary embodiments of the utility model, the same reference numerals generally represent the same components.

[0021] Figure 1 The structural schematic diagram of a device for quickly marking the gauge length of a tensile specimen according to an embodiment of the utility model is shown.

[0022] Figure 2The internal structure diagram of the moving seat according to an embodiment of the present utility model is shown.

[0023] Figure 3 The schematic diagram of the positional relationship between the tensile specimen and the tool holder according to an embodiment of the present utility model is shown.

[0024] Figure 4 The schematic structural diagram of the tensile specimen after being processed and marked according to an embodiment of the present utility model is shown.

[0025] Description of reference numerals:

[0026] 1. Moving seat; 2. Operation hole; 3. Tool holder; 4. Marker pen; 5. Chuck; 6. First fixing groove; 7. Second fixing groove; 8. Turning tool; 9. Tensile specimen; 10. Position monitoring probe; 11. Telescopic arm; 12. Scale; 13. Enter turning tool position; 14. Push out turning tool position; 15. First marking point; 16. Second marking point. Detailed implementation manners

[0027] The preferred implementation manners of the present utility model will be described in more detail below. Although the preferred implementation manners of the present utility model are described below, it should be understood that the present utility model can be implemented in various forms and should not be limited by the implementation manners described herein. On the contrary, these implementation manners are provided to make the present utility model more thorough and complete, and to be able to convey the scope of the present utility model to those skilled in the art completely.

[0028] The present utility model provides a device for quickly marking the gauge length of a tensile specimen, including:

[0029] A moving seat, slidably arranged along the length direction of the lathe, an operation hole is provided on the moving seat, and a tool holder is rotatably arranged in the operation hole;

[0030] A marker pen, arranged on the tool holder, and the marker pen can rotate synchronously with the tool holder;

[0031] A chuck, arranged on the lathe, when the moving seat moves close to the chuck, the tool holder rotates around the axis of the chuck.

[0032] Specifically, most of the structure of the marking device adopts the structure of the original lathe. The chuck is fixedly arranged at one end of the lathe. The chuck can be used to fix the tensile specimen. A moving seat is slidably arranged on the lathe, and a tool rest is also arranged on the moving seat. When machining the tensile specimen is required, the moving seat can be moved closer to the tensile specimen, and then by rotating the tool rest, the turning tool on the tool rest can machine the tensile test. After the machining is completed, it is not necessary to take down the tensile specimen for marking. Directly facing the marking pen towards the tensile test, and also by rotating the tool rest, the marking pen is driven to mark the tensile specimen. In this way, the tensile specimen taken off from the lathe can directly conduct the tensile test, saving the process of transferring to the marking equipment for the marking process.

[0033] Optionally, a first fixing groove is arranged on the tool rest, and the first fixing groove is detachably connected to the marking pen.

[0034] Optionally, a second fixing groove is arranged on the tool rest, and the second fixing groove is detachably connected to the turning tool.

[0035] Optionally, the opening directions of the first fixing groove and the second fixing groove are exactly opposite.

[0036] Specifically, a first fixing groove and a second fixing groove are respectively arranged at both ends of the tool rest. The opening directions of the two fixing grooves are opposite to each other. When the lathe needs to machine the tensile specimen, the orientation of the tool rest can be adjusted to make the turning tool face the tensile specimen, and then rotating the tool rest can achieve the machining of the specimen. When the lathe needs to mark the tensile specimen, the orientation of the tool rest can be continuously adjusted to make the marking pen face the tensile specimen, and then rotating the tool rest can achieve the marking of the specimen. When machining and marking, only the corresponding tool faces the specimen, which avoids misoperation on the specimen and can ensure the machining quality of the tensile specimen.

[0037] Optionally, a third fixing groove is arranged at the center of the chuck, and one end of the tensile specimen is connected to the third fixing groove.

[0038] Specifically, the third fixing groove on the chuck is used to fix the tensile specimen. Since the fixed tensile specimen is installed along the central axis of the chuck, when the tool rest drives the turning tool or the marking pen to operate, the machining position of the specimen can be accurate.

[0039] Optionally, a position monitoring probe is arranged on the moving seat, and the output end of the position monitoring probe faces the tensile specimen.

[0040] Optionally, a telescopic arm is slidably arranged on the wall of the operation hole. The telescopic arm is connected to the tool rest, and the telescopic direction of the telescopic arm is parallel to the radial direction of the chuck.

[0041] Specifically, when machining a tensile specimen, the position monitoring probe can observe the positional relationship between the tip of the turning tool and the outer surface of the specimen, and can observe the feed state and push state of the turning tool, thus ensuring accurate machining dimensions of the specimen by the turning tool; when marking the tensile specimen, the position monitoring probe can observe the positional relationship between the tip of the marking pen and the outer surface of the specimen. Once the tip touches the outer surface of the specimen, it immediately leaves, avoiding damage to the marking pen and also avoiding the impact of the marking pen on the strength of the specimen.

[0042] Optionally, the middle part of the tool holder is rotatably connected to the telescopic arm.

[0043] Specifically, when the moving seat approaches the tool disc, the tensile specimen generally passes through the operation hole. Then, the telescopic arm drives the tool holder to approach the tensile specimen, making the turning tool or the marking pen contact the tensile specimen. When it is necessary to remove the tensile specimen, the telescopic arm can drive the tool holder away from the tensile specimen, and then slide the moving seat away from the tensile specimen, so that the tensile specimen can be easily removed. The whole operation process is simple, safe, and will not cause damage to the tensile specimen.

[0044] Optionally, the marking pen is a paint pen.

[0045] Specifically, marking the machined tensile specimen with a paint pen will not cause scratches on the tensile specimen, resulting in premature fracture at this location, and the marks produced by the paint pen are clearer and will not be easily wiped off.

[0046] Optionally, a scale is provided along the length direction of the lathe.

[0047] Specifically, since the machining position and marking position of the tensile specimen need to be operated according to the tensile test requirements, the scale can clearly and accurately show the moving distance of the moving seat, ensuring the correct operation of the tensile test.

[0048] Embodiment

[0049] As Figures 1 to 4 shown, the present utility model provides a device for quickly marking the gauge length of a tensile specimen, including:

[0050] A moving seat 1, slidably arranged along the length direction of the lathe. An operation hole 2 is formed on the moving seat 1, and a tool holder 3 is rotatably arranged in the operation hole 2;

[0051] A marking pen 4, arranged on the tool holder 3, and the marking pen 4 can rotate synchronously with the tool holder 3;

[0052] A chuck 5, arranged on the lathe. When the moving seat 1 moves close to the chuck 5, the tool holder 3 rotates around the axis of the chuck 5.

[0053] In this embodiment, a first fixing groove 6 is provided on the tool rest 3, and the first fixing groove 6 is detachably connected to the marker pen 4.

[0054] In this embodiment, a second fixing groove 7 is provided on the tool rest 3, and the second fixing groove 7 is detachably connected to the turning tool 8.

[0055] In this embodiment, the opening directions of the first fixing groove 6 and the second fixing groove 7 are exactly opposite.

[0056] In this embodiment, a third fixing groove is provided at the center of the chuck 5, and one end of the tensile specimen 9 is connected to the third fixing groove.

[0057] In this embodiment, a position monitoring probe 10 is provided on the moving seat 1, and the output end of the position monitoring probe 10 faces the tensile specimen 9.

[0058] In this embodiment, a telescopic arm 11 is slidably arranged on the pore wall of the operation hole 2. The telescopic arm 11 is connected to the tool rest 3, and the telescopic direction of the telescopic arm 11 is parallel to the radial direction of the chuck 5.

[0059] In this embodiment, the middle part of the tool rest 3 is rotatably connected to the telescopic arm 11.

[0060] In this embodiment, the marker pen 4 is a paint pen.

[0061] In this embodiment, a scale 12 is arranged on the lathe along the length direction.

[0062] In summary, the specific operation process of this marking device is as follows:

[0063] Step 1: Install the turning tool 8: Install the turning tool 8 in the second fixing groove 7 of the tool rest 3 of the lathe;

[0064] Step 2: Install the marker pen 4: Install the marker pen 4 in the first fixing groove 6 of the lathe tool rest 8, and the tip of the marker pen 4 points in the opposite direction to the tip of the turning tool 8;

[0065] Step 3: Install the tensile specimen 9: Install the tensile specimen 9 on the chuck 5 of the lathe;

[0066] Step 4: Machine the tensile specimen 5: Start the lathe, rotate the tool rest 3, align the tip of the turning tool 8 to enter the tool position 13, vertically advance the tool rest 3. When the tip of the turning tool 8 touches the tensile specimen 9, vertically feed 2.5 mm, then laterally translate the turning tool 8 to the tool exit position 14, and then withdraw the turning tool 8. At this time, the machining of the tensile specimen 9 is completed. The distance between the tool entry position 13 and the tool exit position 14 is 105 mm. The tool entry position 13 is 55 mm away from the right end, and the tool exit position 14 is 55 mm away from the left end;

[0067] Step Five: Mark the gauge length: Do not unload the tensile specimen 9. Rotate the tool rest 3 to align the tip of the marking pen 4 with the first marking point 15. Move the tool rest 3 vertically forward. When the tip of the marking pen 4 touches the tensile specimen 9 and then leaves. Move the tool rest 3 to align the tip of the marking pen 4 with the second marking point 16. Move the tool rest 3 vertically forward. When the tip of the marking pen 4 touches the tensile specimen 9 and then leaves. At this time, the marking of the original gauge length of the tensile specimen 9 is completed. The distance between the first marking point 15 and the second marking point 16 is 100 mm, the distance between the first marking point 15 and the turning tool position 13 is 2.5 mm, and the distance between the second marking point 16 and the tool exit position 14 is 2.5 mm;

[0068] Step Six: Remove the tensile specimen 9: After the tensile specimen 9 is marked, it can be removed from the lathe chuck 5. After the tensile specimen 9 is removed from the lathe chuck 5, the tensile test can be carried out;

[0069] Step Seven: Batch cycle: If other tensile specimens need to be marked, repeat Steps Three to Six.

[0070] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A device for quickly marking the gauge length of a tensile specimen, characterized in that: include: A movable seat is slidably arranged along the length direction of the lathe, an operating hole is opened on the movable seat, and a tool holder is rotatably arranged in the operating hole; A marking pen, arranged on the tool holder, and the marking pen can rotate synchronously with the tool holder; A chuck is arranged on the lathe, and when the movable seat moves close to the chuck, the tool holder rotates around the axis of the chuck.

2. The tensile specimen gauge rapid marking device according to claim 1, characterized in that: The tool holder is provided with a first fixing groove, and the first fixing groove is detachably connected to the marking pen.

3. The tensile specimen gauge rapid marking device according to claim 2, characterized in that: The tool holder is provided with a second fixing groove, and the second fixing groove is detachably connected to the turning tool.

4. The tensile specimen gauge rapid marking device according to claim 3, characterized in that: The opening directions of the first fixing groove and the second fixing groove are exactly opposite.

5. The tensile specimen gauge rapid marking device according to claim 1, characterized in that: A third fixing groove is arranged at the center of the chuck, and the third fixing groove is connected to one end of the tensile specimen.

6. The tensile specimen gauge rapid marking device according to claim 5, characterized in that: A position monitoring probe is arranged on the movable seat, and an output end of the position monitoring probe faces the tensile specimen.

7. The tensile specimen gauge rapid marking device according to claim 6, characterized in that: A telescopic arm is slidably arranged on the hole wall of the operating hole, the telescopic arm is connected to the tool holder, and the telescopic direction of the telescopic arm is parallel to the radial direction of the chuck.

8. The tensile specimen gauge rapid marking device according to claim 7, characterized in that: The middle part of the tool holder is rotatably connected to the telescopic arm.

9. The tensile specimen gauge rapid marking device according to claim 1, characterized in that: The marking pen is a paint pen.

10. The tensile specimen gauge length rapid marking device according to claim 1, characterized in that: The lathe is provided with a ruler along the length direction.

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