Hardness tester with pressure head convenient to replace

Abstract

The utility model relates to the technical field of hardness instruments, in particular to a hardness instrument convenient to replace a pressure head, which comprises a machine body, a replacement device and a replacement head, a fixed shaft is arranged at the upper end of the front side of the machine body, a mounting pipe is arranged at the lower end of the fixed shaft, and symmetrical support plates are arranged at two ends of the upper side of the replacement head; symmetrical mounting grooves are formed in the upper end of the through hole, the replacing device comprises a fixing box, a rotating rod, a pushing block and a limiting plate, a cavity without an upper side wall is formed in the fixing box, the pushing block is attached to and slidably connected with the cavity, and the limiting plate is connected with the pushing block. The two side walls of the upper end of the mounting groove are provided with symmetrical limiting holes, the limiting holes are attached to and communicated with the upper side of the mounting groove, and the limiting plate is in sliding connection with the limiting holes, so that the replacement efficiency is improved, the downtime in the testing process is shortened, the replacement head can be stably and accurately mounted on a machine body, and the requirement of high-precision testing is met.

Description

Technical Field

[0001] This utility model relates to the field of hardness tester technology, specifically a hardness tester with an easily replaceable indenter. Background Technology

[0002] As is well known, hardness testing is an indispensable part of evaluating material properties and monitoring production quality in existing materials science, mechanical manufacturing and many industrial fields. Although traditional hardness testers can complete basic hardness testing tasks, they often face many challenges in practical applications, especially in terms of indenter replacement.

[0003] Specifically, the replacement process of the indenter in a traditional hardness tester is usually quite complicated and time-consuming. Most hardness testers use fasteners such as bolts and nuts to fix the indenter to the testing mechanism. When replacing it, these fasteners need to be removed first, then the old indenter needs to be removed, the new indenter needs to be installed and tightened again. This is not only cumbersome, but also prone to introducing errors during the disassembly and assembly process, affecting the accuracy and repeatability of the test. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a hardness tester with an easily replaceable indenter.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hardness tester with an easily replaceable indenter, comprising a body, a replacement device, and a replacement head. A fixed shaft is provided at the upper front end of the body, and a mounting tube is provided at the lower end of the fixed shaft. A through hole is provided inside the mounting tube, and symmetrical grooves are provided on both sides of the through hole, communicating with the through hole. The replacement head is adapted to and slidably connected to the through hole. Symmetrical support plates are provided at both ends of the upper side of the replacement head, and the support plates are adapted to and slidably connected to the grooves. A symmetrical mounting groove is provided at the upper end of the through hole, and the mounting groove communicates with the... The grooves are arranged in a cross shape. The support plate is adapted to the mounting groove. The replacement device is located on both sides of the mounting groove. The replacement device includes a fixed box, a rotating rod, a pushing block, and a limiting plate. The fixed box has a cavity without an upper side wall. The rotating rod passes through the cavity. The pushing block is on the rotating rod and threadedly connected to it. The pushing block fits and slides with the cavity. The limiting plate is connected to the pushing block. The upper side walls of the mounting groove have symmetrical limiting holes. The limiting holes fit and pass through the upper side of the mounting groove. The limiting plate slides with the limiting holes.

[0008] To ensure stability and accuracy during the testing process, the present invention includes the following improvement: an adjustment base device is provided at the lower front end of the machine body.

[0009] To reduce friction and wear between the push block and the cavity mating surface, the present invention is improved by providing a wear-resistant layer on the mating surface between the push block and the cavity.

[0010] To achieve automated replacement of the head, the present invention is improved by: a rotating motor is provided on one side wall of the fixed box, and the rotating rod passes through the side wall of the fixed box and is connected to the output end of the rotating motor.

[0011] In order to intuitively view the working status of the hardness tester, the present invention has the following improvement: a display screen is provided on the front and side walls of the machine body.

[0012] To enhance the stability of the hardness tester on the workbench, this invention features an improvement: the bottom of the machine body is provided with anti-slip texture.

[0013] To protect the hardness testing surface from wear and corrosion, the present invention is improved by providing a hardness testing surface at the front end of the replacement head, and a protective coating on the hardness testing surface.

[0014] In order to enable the hardness tester to connect with other devices, the present invention is improved by providing a remote communication interface within the hardness tester.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a hardness tester that facilitates the replacement of the indenter, and has the following beneficial effects:

[0017] This hardness tester, which facilitates indentation head replacement, features a mounting slot and support plate, enabling quick and convenient head replacement. A replacement device is included; a rotating motor drives a rotating rod, which in turn moves a push block, causing a limiting plate to move. The limiting plate passes through or disengages from the limiting hole, further enhancing the head's stability and preventing displacement or loosening due to external forces during testing. This improves replacement efficiency, reduces downtime, and ensures the head is stably and accurately mounted on the machine body. The installation process is simple and quick, avoiding errors that may be introduced by traditional replacement methods. This allows the hardness tester to provide more accurate and reliable test results, meeting the demands of high-precision testing. Attached Figure Description

[0018] Figure 1 This is a first-view schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a second-view schematic diagram of the structure of this utility model;

[0020] Figure 3 This is an exploded view of the installation pipe and replacement head of this utility model.

[0021] Figure 4 This is a schematic diagram of the internal cross-section of the structural installation pipe of this utility model.

[0022] In the diagram: 1. Body; 2. Base; 3. Display screen; 4. Fixed shaft; 5. Replacement head; 6. Rotating motor; 7. Fixing box; 8. Support plate; 9. Limiting plate; 10. Rotating rod; 11. Push block; 12. Mounting slot; 13. Groove; 14. Interface; 15. Mounting tube. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 A hardness tester with an easily replaceable indenter includes a body 1, a replacement device, and a replacement head 5. A fixed shaft 4 is located at the upper front end of the body 1, and a mounting tube 15 is located at the lower end of the fixed shaft 4. A through hole is provided inside the mounting tube 15, and symmetrical grooves 13 are provided on both sides of the through hole, communicating with the through hole. The replacement head 5 is adapted to and slidably connected to the through hole. Symmetrical support plates 8 are provided at both ends of the upper side of the replacement head 5, and the support plates 8 are adapted to and slidably connected to the grooves 13. Symmetrical mounting slots 12 are provided at the upper end of the through hole, and the mounting slots 12 and the grooves 13 are arranged in a cross shape. The support plates 8 are adapted to the mounting slots 12. The replacement device is located on both sides of the mounting slots 12. The replacement device includes a fixed box 7, a rotating rod 10, a pushing block 11, and a limiting plate 9. The fixed box 7 has a cavity without an upper side wall. The rotating rod 10 passes through the cavity. The pushing block 11 is on the rotating rod 10 and threadedly connected to it. The pushing block 11 fits and slides with the cavity. The limiting plate 9 is connected to the pushing block 11. The upper side walls of the mounting groove 12 have symmetrical limiting holes. The limiting holes fit and pass through the upper side of the mounting groove 12. The limiting plate 9 slides with the limiting holes. The lower front end of the machine body 1 has an adjusting base 2. The side wall of the fixed box 7 has a rotating motor 6. The rotating rod 10 passes through the side wall of the fixed box 7 and is connected to the output end of the rotating motor 6. The front end of the replacement head 5 has a hardness testing surface with a protective coating. The front side wall of the machine body 1 has a display screen 3.

[0025] During use, the height and tilt angle of the hardness tester are adjusted according to the shape and size of the material to be tested by adjusting the base 2 device, so that the hardness test surface can be accurately aligned with the test position. The hardness tester has a pressure application mechanism that starts working and applies pressure to the replacement head 5. The hardness test surface of the replacement head 5 produces an indentation on the material to be tested under pressure. The depth or size of the indentation is related to the hardness of the material to be tested. The hardness tester has a measuring mechanism to measure the depth or size of the indentation. The measurement results are displayed on the display screen 3 for recording and analysis. This process is a common and mature technology on the market and will not be described in detail here. When it is necessary to replace the head 5, the rotation motor 6 is first started by the control device. The output of the rotation motor 6 drives the rotation rod 10 to rotate. Under the limitation of the fixed box 7, the pushing block 11 moves with the rotation of the rotating rod 10, driving the limiting plate 9 to move. The limiting plate 9 disengages from the limiting hole. Then, the replacement head 5 is rotated so that the support plate 8 is parallel to the groove 13. The support plate 8 and the replacement head 5 are slid out of the through hole and the groove 13 for disassembly. Then, the new replacement head 5 is slid into the groove 13 and the through hole until it reaches the upper end of the mounting groove 12. The support plate 8 and the replacement head 5 are rotated so that the support plate 8 is parallel to the mounting groove 12. The replacement head 5 and the support plate 8 are pulled down so that the support plate 8 passes through the mounting groove 12. The rotating motor 6 is started. The rotating motor 6 operates as described above to make the limiting plate 9 pass through the limiting hole. At this time, the limiting plate 9 is attached to the support plate 8 and the upper side wall of the mounting groove 12 for fixation.

[0026] In actual use, it is necessary to reduce friction and wear between the push block 11 and the cavity contact surface and extend the service life of the replacement device. In order to meet the above requirements, in this embodiment, the contact surface between the push block 11 and the cavity is provided with a wear-resistant layer.

[0027] In actual use, it is necessary to enhance the stability of the hardness tester on the workbench. In order to meet the above requirements, in this embodiment, the bottom of the machine body 1 is provided with anti-slip texture.

[0028] In practical use, the hardness tester needs to be able to connect to other devices. To meet the above requirements, in this embodiment, the hardness tester is equipped with a remote communication interface 14.

[0029] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

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

Claims

1. A hardness tester with an easily replaceable indenter, comprising a body (1), a replacement device, and a replacement head (5), characterized in that: A fixed shaft (4) is provided at the upper front end of the body (1). A mounting tube (15) is provided at the lower end of the fixed shaft (4). A through hole is provided in the mounting tube (15). Symmetrical grooves (13) are provided on both sides of the through hole. The grooves (13) are connected to the through hole. The replacement head (5) is adapted to and slidably connected to the through hole. Symmetrical support plates (8) are provided at both ends of the upper side of the replacement head (5). The support plates (8) are adapted to and slidably connected to the grooves (13). A symmetrical mounting groove (12) is provided at the upper end of the through hole. The mounting grooves (12) and the grooves (13) are arranged in a cross shape. The support plates (8) are adapted to the mounting grooves (12). The replacement device is located on both sides of the mounting groove (12). The replacement device includes a fixed box (7), a rotating rod (10), a pushing block (11), and a limiting plate (9). The fixed box (7) has a cavity without an upper side wall. The rotating rod (10) passes through the cavity. The pushing block (11) is on the rotating rod (10) and threadedly connected to it. The pushing block (11) fits and slides with the cavity. The limiting plate (9) is connected to the pushing block (11). The upper side walls of the mounting groove (12) are provided with symmetrical limiting holes. The limiting holes fit and pass through the upper side of the mounting groove (12). The limiting plate (9) slides with the limiting holes.

2. The hardness tester with an easily replaceable indenter according to claim 1, characterized in that: An adjustment base (2) is provided at the lower front end of the body (1).

3. A hardness tester with an easily replaceable indenter according to claim 2, characterized in that: The contact surface between the push block (11) and the cavity is provided with a wear-resistant layer.

4. A hardness tester with an easily replaceable indenter according to claim 3, characterized in that: A rotating motor (6) is provided on one side wall of the fixed box (7), and the rotating rod (10) passes through the side wall of the fixed box (7) and is connected to the output end of the rotating motor (6).

5. A hardness tester with an easily replaceable indenter according to claim 4, characterized in that: The main body (1) is equipped with a display screen (3) on its front and side walls.

6. A hardness tester with an easily replaceable indenter according to claim 5, characterized in that: The bottom of the body (1) is provided with anti-slip texture.

7. A hardness tester with an easily replaceable indenter according to claim 6, characterized in that: The front end of the replacement head (5) is provided with a hardness testing surface, and the hardness testing surface is provided with a protective coating.

8. A hardness tester with an easily replaceable indenter according to claim 7, characterized in that: The hardness tester is equipped with a remote communication interface (14).

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