A positioning device for detecting the hardness of the end of a cylindrical sample

Abstract

The present invention discloses a positioning device for detecting the hardness of the end of a cylindrical sample, which relates to the technical field of hardness detection, specifically a positioning device for detecting the hardness of the end of a cylindrical sample, including a hardness tester. An electromagnetic block is fixedly installed above the hardness tester. A power supply wire is fixedly connected to the left side of the electromagnetic block. An object rack is fixedly connected to the rear side above the electromagnetic block, and a counterweight rack is fixedly connected to the front side above the electromagnetic block. For this positioning device for detecting the hardness of the end of a cylindrical sample, by installing an electromagnetic block above the detection table of the hardness tester, an object rack and a counterweight rack are installed on the left and right sides above the electromagnetic block. The first extension rack and the second extension rack are respectively connected to the outside of the object rack and the counterweight rack through the first connecting block and the second connecting block. When in use, it is convenient for the device to adapt to objects of various lengths. At the same time, the cooperation of the counterweight rack and the second extension rack facilitates the placement of the counterweight block in a suitable position to stabilize the device.

Description

Technical Field

[0001] The present invention relates to the technical field of hardness detection, and particularly to a positioning device for detecting the hardness of the end part of a cylindrical sample. Background Technique

[0002] A hardness tester is a hardness testing instrument. The definition of hardness was first proposed by Réaumur for measuring the hardness of metals, which represents the ability of a material to resist the penetration of a hard object into its surface. It is one of the important performance indicators of metal materials. Generally, the higher the hardness, the better the wear resistance. The hardness test is the simplest and easiest test method in mechanical property tests. In order to use the hardness test to replace some mechanical property tests, a relatively accurate conversion relationship between hardness and strength is required in production. For Rockwell and Vickers hardness tests of mechanical properties, a bench hardness tester is generally used for detection. Conventional hardness testers are equipped with a flat workbench and a V-groove tooling to assist in the detection of various samples, which basically meet the detection requirements of samples with shapes such as flat surfaces and circular surfaces.

[0003] When detecting the hardness of some long cylindrical samples, usually the V-groove tooling can only support the central part of the sample. After being balanced and placed, it can only detect the hardness of the middle part of the sample and cannot meet the requirements for testing the hardness of the end part. Especially when products such as studs and bolts need to detect the hardness of the end part after hardening processes such as high-frequency quenching and nitriding at the end, since the ordinary V-groove tooling cannot effectively support the end part of the sample and cannot be placed stably, it cannot meet the test requirements. Only by dissecting the physical object can the hardness of the end part be detected. To facilitate the detection of smooth-surfaced parts and the use of the hardness tester, we propose a positioning device for detecting the hardness of the end part of a cylindrical sample. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a positioning device for detecting the hardness of the end part of a cylindrical sample, which solves the problems raised in the above background technique.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A positioning device for detecting the hardness of the end part of a cylindrical sample, including a hardness tester, an electromagnetic block is fixedly installed above the hardness tester, a power supply wire is fixedly connected to the left side of the electromagnetic block, an object rack is fixedly connected to the rear side above the electromagnetic block, a counterweight rack is fixedly connected to the front side above the electromagnetic block, a first extension rack is movably installed at the rear side of the object rack, a first connection block is movably installed at the bottom of the connection between the object rack and the first extension rack, a second extension rack is movably installed at the front side of the counterweight rack, and a second connection block is movably installed below the connection between the counterweight rack and the second extension rack.

[0006] Optionally, roller grooves are provided on the outer sides of the object rack and the first extension rack, and friction lines are provided on the top surfaces of the object rack and the first extension rack.

[0007] Optionally, a roller is movably sleeved in the inner cavity of the roller groove, a bearing is movably sleeved in the inner cavity of the roller, a connecting block is fixedly connected to the inner side of the bearing, a spring sleeve is fixedly connected above the connecting block, a clamping spring is fixedly connected above the connecting block, and a clamping plate is fixedly installed inside the clamping spring.

[0008] Optionally, the clamping plate is located above the object rack and the first extension rack, friction lines are formed at the bottom of the clamping plate, and the bottom surface of the clamping plate is parallel to the top surface of the object rack up and down.

[0009] Optionally, fixing grooves are formed in the left and right sides above the counterweight rack and the second extension rack, and a counterweight block is movably sleeved outside the counterweight rack and the second extension rack.

[0010] Optionally, a rectangular groove is formed in the inner cavity of the counterweight block, a fixing spring is fixedly connected to the inner side of the rectangular groove, and a fixing block is fixedly connected to the bottom of the fixing spring.

[0011] Optionally, the fixing block and the fixing groove are mutually adapted, the top end of the fixing block is located in the inner cavity of the rectangular groove, and an activity groove for adapting the counterweight rack, the second extension rack and the second connecting block is formed inside the counterweight block.

[0012] Optionally, the second extension rack, the counterweight rack, the object rack and the first extension rack are parallel to each other front and back, and V-shaped grooves are formed above the second extension rack, the counterweight rack, the object rack and the first extension rack, and the angle of the V-shaped groove is 120°.

[0013] The present invention provides a cylindrical sample end hardness detection and positioning device, which has the following beneficial effects:

[0014] 1. For this cylindrical sample end hardness detection and positioning device, an electromagnet block is installed above the hardness tester detection table, a power supply wire is connected to the left side of the electromagnet block, an object rack and a counterweight rack are installed on the left and right sides above the electromagnet block, and the first extension rack and the second extension rack are respectively connected to the object rack and the counterweight rack through the first connecting block and the second connecting block. When in use, it is convenient to make the device adapt to objects of various lengths. At the same time, with the cooperation of the counterweight rack and the second extension rack, it is convenient to place the counterweight block in a suitable position to stabilize the device.

[0015] 2. For this cylindrical sample end hardness detection and positioning device, roller grooves are formed on the outer sides of the object rack and the first extension rack, friction lines are formed above the object rack and the first extension rack, a roller is movably sleeved inside the roller groove, the roller is installed and connected to the connecting block through a bearing, a spring sleeve and a clamping spring are connected above the connecting block, and a clamping plate is installed inside the clamping spring. Friction lines are formed below the clamping plate, which is convenient to stably clamp the object during use and prevent the movement of the object from affecting the accuracy of detection.

[0016] 3. The cylindrical sample end hardness detection and positioning device is provided with fixing grooves above the counterweight frame and the second connecting block, so that the counterweight block is movably sleeved outside the counterweight frame and the second extension frame. A rectangular groove is opened inside the counterweight block, and the fixing block is installed in the inner cavity of the rectangular groove through a fixing spring. When in use, it is convenient to balance the object through the counterweight block to prevent the object from moving. At the same time, the cooperation of the fixing spring and the fixing block with the fixing groove can prevent the movement of the counterweight block and affect the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present invention;

[0018] Figure 2 It is a schematic structural diagram of the split of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the object rack and the counterweight frame of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the first extension frame of the present invention;

[0021] Figure 5 It is a schematic structural diagram of the clamping plate of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the counterweight block of the present invention.

[0023] In the figure: 1, hardness tester; 2, electromagnetic block; 3, power supply wire; 4, object rack; 5, first connecting block; 6, first extension frame; 7, roller groove; 8, friction pattern; 9, roller; 10, bearing; 11, connecting block; 12, spring sleeve; 13, clamping spring; 14, clamping plate; 15, counterweight frame; 16, second connecting block; 17, second extension frame; 18, fixing groove; 19, counterweight block; 20, rectangular groove; 21, fixing spring; 22, fixing block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Please refer to Figures 1 to 3, the present invention provides a technical solution: a cylindrical sample end hardness detection and positioning device, which includes a hardness tester 1. An electromagnetic block 2 is fixedly installed above the hardness tester 1. A power supply wire 3 is fixedly connected to the left side of the electromagnetic block 2. A object holder 4 is fixedly connected to the rear side above the electromagnetic block 2. A counterweight holder 15 is fixedly connected to the front side above the electromagnetic block 2. A first extension frame 6 is movably installed at the rear side of the object holder 4. A first connection block 5 is movably installed at the bottom of the connection between the object holder 4 and the first extension frame 6. A second extension frame 17 is movably installed at the front side of the counterweight holder 15. A second connection block 16 is movably installed below the connection between the counterweight holder 15 and the second extension frame 17. Through the arrangement of the object holder 4, the first connection block 5 and the first extension frame 6, it is convenient to place the cylindrical object, and at the same time place the part to be detected in a suitable position to avoid affecting the stable placement of the object and the stability of the device. At the same time, through the arrangement of the counterweight holder 15, the second connection block 16 and the second extension frame 17, it is convenient for the counterweight block 19 to move during use, and it is convenient for the counterweight block 19 to cooperate with the object to balance the center. The second extension frame 17, the counterweight holder 15, the object holder 4, and the first extension frame 6 are parallel to each other front and back. V-shaped grooves are provided above the second extension frame 17, the counterweight holder 15, the object holder 4, and the first extension frame 6. The angle of the V-shaped groove is 120°. The V-shaped groove is convenient for placing the object and preventing the object from moving during use. At the same time, a 120° V-shaped groove is provided inside the clamping plate 14, which is convenient for stably clamping the object and preventing the object from moving.

[0026] Please refer to Figures 4 to 5, roller grooves 7 are provided on the outer sides of the object rack 4 and the first extension rack 6, and friction patterns 8 are provided on the top surfaces of the object rack 4 and the first extension rack 6. The roller grooves 7 are provided to facilitate the forward and backward movement of the clamping plate 14, so that the clamping plate 14 can be moved to a suitable position to hold the object and prevent the movement of the object, which affects the stability of the object. At the same time, the friction patterns 8 are provided to facilitate the movement of the object inside the V-shaped groove during use, which affects the stability of the device. The inner cavity of the roller groove 7 is movably sleeved with a roller 9, and the inner cavity of the roller 9 is movably sleeved with a bearing 10. A connecting block 11 is fixedly connected to the inner side of the bearing 10, and a spring sleeve 12 is fixedly connected to the upper side of the connecting block 11, and a clamping spring 13 is fixedly connected to the upper side of the connecting block 11. A clamping plate 14 is fixedly installed on the inner side of the clamping spring 13. The clamping plate 14 is lifted, so that the clamping plate 14 drives the clamping spring 13 and the spring sleeve 12 to stretch, so that the spring sleeve 12 and the clamping spring 13 are in a stretched state. The object is inserted into the inner part between the clamping plate 14 and the first extension frame 6 through the left side between the clamping plate 14 and the first extension frame 6, and the clamping plate 14 is driven by the clamping spring 13 and the connecting block 11 and the bearing 10 to move the roller 9 in the roller groove 7, so that the clamping plate 14 moves to a suitable position to release the clamping plate 14, so that the clamping plate 14 clamps the object downward under the action of the clamping spring 13, which is convenient for clamping the object quickly and stably. The clamping plate 14 is located above the object frame 4 and the first extension frame 6, and the bottom of the clamping plate 14 is provided with a friction groove 8. The bottom surface of the clamping plate 14 is parallel to the top surface of the object frame 4. The arrangement of the clamping plate 14 and the object frame 4 is convenient for increasing the stability of the object during use, preventing the movement of the object, affecting the stability of the object, and affecting the accuracy of the detection. At the same time, the friction groove 8 is provided at the bottom of the clamping plate 14, which is convenient for preventing the clamping plate 14 from moving above the object and affecting the stability of the detection.

[0027] See also Figure 6, fixing grooves 18 are formed on the left and right sides above the counterweight frame 15 and the second extension frame 17. A counterweight block 19 is movably sleeved outside the counterweight frame 15 and the second extension frame 17. The setting of the counterweight block 19 plays a role in counterweight, facilitating the stabilization of the device, preventing the center of the device from shifting backward after placing an object. At the same time, the setting of the counterweight block 19 utilizes the cooperation of the counterweight frame 15 and the second extension frame 17 to move the center of the device near the center of the electromagnetic block 2. A rectangular groove 20 is formed in the inner cavity of the counterweight block 19. A fixing spring 21 is fixedly connected to the inner side of the rectangular groove 20. The bottom of the fixing spring 21 is fixedly connected to a fixing block 22. Hold the counterweight block 19 and move it, so that the counterweight block 19 moves outside the counterweight frame 15 and the second extension frame 17, and move the counterweight block 19 to a suitable position to make the weights on the left and right sides of the electromagnetic block 2 the same. Subsequently, the fixing block 22 is fixed in the inner cavity of the fixing groove 18 through the fixing spring 21. The setting of the fixing spring 21 and the fixing block 22 facilitates the fixing of the counterweight block 19 and prevents the movement of the device. The fixing block 22 and the fixing groove 18 are mutually adapted. The top end of the fixing block 22 is located in the inner cavity of the rectangular groove 20. An activity groove for adapting to the counterweight frame 15, the second extension frame 17 and the second connecting block 16 is formed on the inner side of the counterweight block 19. Fixing grooves 18 are formed above the counterweight frame 15 and the second extension frame 17, which is convenient for cooperating with the fixing spring 21 and the fixing block 22 to fix the counterweight block 19 during use, preventing the movement of the counterweight block 19 from affecting the stability of the device, and facilitating the stable prevention of the counterweight block 19 outside the counterweight frame 15 and the second extension frame 17.

[0028] In summary, when using the cylindrical sample end hardness detection and positioning device, when detecting a cylindrical object, first place the electromagnetic block 2 on the detection table of the hardness tester 1, then energize the power supply wire 3 to fix the electromagnetic block 2 to the detection table by magnetic adsorption. Place the first extension frame 6 at the rear of the object frame 4, and fix the object frame 4 and the first extension frame 6 through the first connecting block 5. Extend the object frame 4 to an appropriate length through the first connecting block 5 and the first extension frame 6. Then lift the clamping plate 14 to drive the clamping spring 13 and the spring sleeve 12 to stretch, so that the spring sleeve 12 and the clamping spring 13 are in a stretched state. Insert the object through the left side between the clamping plate 14 and the first extension frame 6 into the inside between the clamping plate 14 and the first extension frame 6, and place the object above the object frame 4. Place the part to be detected above the center of the electromagnetic block 2. Then drive the roller 9 through the clamping spring 13 and the connecting block 11 with the bearing 10 to move inside the roller groove 7, so that the clamping plate 14 moves to an appropriate position and release the clamping plate 14, so that the clamping plate 14 clamps the object downward under the action of the clamping spring 13. Then place the second extension frame 17 in front of the counterweight frame 15, connect the second extension frame 17 and the counterweight frame 15 through the second connecting block 16, and then extend the counterweight frame 15 to an appropriate length. Hold the counterweight block 19 and move it so that the counterweight block 19 moves outside the counterweight frame 15 and the second extension frame 17 to an appropriate position to make the weights on the left and right sides of the electromagnetic block 2 the same. Then fix the fixed block 22 in the inner cavity of the fixed groove 18 through the fixed spring 21, and that's it.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cylindrical sample end hardness detection and positioning device, comprising a hardness tester (1), characterized in that: An electromagnetic block (2) is fixedly installed above the hardness tester (1). A power supply wire (3) is fixedly connected to the left side of the electromagnetic block (2). A object rack (4) is fixedly connected to the rear side above the electromagnetic block (2). A counterweight rack (15) is fixedly connected to the front side above the electromagnetic block (2). A first extension rack (6) is movably installed on the rear side of the object rack (4). A first connection block (5) is movably installed at the bottom of the connection between the object rack (4) and the first extension rack (6). A second extension rack (17) is movably installed on the front side of the counterweight rack (15). A second connection block (16) is movably installed below the connection between the counterweight rack (15) and the second extension rack (17). The second extension rack (17), the counterweight rack (15), the object rack (4), and the first extension rack (6) are parallel to each other front and back. V-shaped grooves are provided above the second extension rack (17), the counterweight rack (15), the object rack (4), and the first extension rack (6). The angle of the V-shaped groove is 120°. Fixing grooves (18) are provided on the left and right sides above the counterweight rack (15) and the second extension rack (17). A counterweight block (19) is movably sleeved outside the counterweight rack (15) and the second extension rack (17). A rectangular groove (20) is provided in the inner cavity of the counterweight block (19). A fixing spring (21) is fixedly connected to the inner side of the rectangular groove (20). A fixing block (22) is fixedly connected to the bottom of the fixing spring (21).

2. The cylindrical sample end hardness detection and positioning device according to claim 1, characterized in that: Roller grooves (7) are provided on the outer sides of the object rack (4) and the first extension rack (6). Friction lines (8) are provided on the top surfaces of the object rack (4) and the first extension rack (6).

3. The cylindrical sample end hardness detection and positioning device according to claim 2, characterized in that: A roller (9) is movably sleeved in the inner cavity of the roller groove (7). A bearing (10) is movably sleeved in the inner cavity of the roller (9). A connection block (11) is fixedly connected to the inner side of the bearing (10). A spring sleeve (12) is fixedly connected above the connection block (11). A clamping spring (13) is fixedly connected above the connection block (11). A clamping plate (14) is fixedly installed inside the clamping spring (13).

4. A cylindrical sample end hardness detection and positioning device according to claim 3, characterized in that: The clamping plate (14) is located above the object rack (4) and the first extension rack (6). Friction lines (8) are provided on the bottom of the clamping plate (14). The bottom surface of the clamping plate (14) is parallel to the top surface of the object rack (4) up and down.

5. A cylindrical sample end hardness detection and positioning device according to claim 4, characterized in that: The fixing block (22) and the fixing groove (18) are mutually adapted. The top end of the fixing block (22) is located in the inner cavity of the rectangular groove (20). A movable groove adapted to the counterweight rack (15), the second extension rack (17), and the second connection block (16) is provided inside the counterweight block (19).

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