Special clamp for testing Vickers hardness of small-size three-edged needle
By designing a Vickers hardness test fixture suitable for small-sized triangular needles, and using a slider and gear mechanism to stably clamp the triangular needles, the problem of unstable position during the test was solved, thus improving accuracy and efficiency.
Patent Information
- Application Number
- CN202420860229.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The lack of a dedicated fixture for small-sized triangular needles in the current technology leads to instability in the position of the triangular needles during Vickers hardness testing, affecting the accuracy and efficiency of the test results.
A special fixture for testing the Vickers hardness of small-sized triangular needles was designed. The fixture achieves stable clamping of the triangular needles through a slider, adjusting rod and gear mechanism. The height of the clamping block is adjusted by the opposing movement of the sliders and the meshing of the gears, and the spring structure can adapt to triangular needles of different sizes.
It achieves stable clamping of the triangular needle during the testing process, preventing shaking or falling off, ensuring the accuracy of test results and improving testing efficiency.
Smart Images
Figure CN222318649U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of triangular needle test fixtures, in particular to a special fixture for testing Vickers hardness of a small-size triangular needle. Background Art
[0002] The three-edged needle is used for pricking and bleeding. It is used to puncture certain acupuncture points or superficial blood vessels on the patient's body to release a small amount of blood. This method of treating diseases is called bloodletting. It is also called "bloodletting".
[0003] In the process of Vickers hardness test of small-sized triangular needles, since there is no special fixture for different samples in Vickers hardness test, the test personnel can only use conventional fixtures for testing the Vickers hardness of triangular needles. Conventional fixtures are only suitable for samples with rectangular cross-sections, and are not suitable for samples with special cross-sections such as triangular needles. Since the clamping part of the triangular needle is the position of the larger needle body, the size is larger than the outer diameter of the triangular needle, which will cause the position of the triangular needle sample to change during the force application process, and ultimately the Vickers hardness value of the triangular needle cannot be accurately measured. In order to stably and accurately clamp the triangular needle, ensure that the position of the triangular needle does not change during the hardness test, thereby obtaining accurate and reliable test results and improving test efficiency, it is necessary to design a special fixture for triangular needle Vickers hardness test. Utility Model Content
[0004] The utility model aims to solve the above problems and proposes a special fixture for testing Vickers hardness with a small-sized triangular needle.
[0005] The technical solution adopted by the utility model is as follows: a small-size triangular needle Vickers hardness test fixture, comprising:
[0006] A fixed seat, a slide table is arranged in the middle of the upper surface of which, two sliders arranged opposite to each other are slidably connected to the upper surface of the slide table, a first adjusting rod is rotatably connected inside the slide table, and the first adjusting rod is threadedly connected to the bottom of the two sliders;
[0007] A clamping block is slidably connected to the front side of the slider, a rack is fixedly installed on one end of the clamping block located inside the slider, a rotating shaft is rotatably connected inside the slider, a gear is fixedly installed on the outer wall of the rotating shaft, the gear is meshed with the rack, and an adjusting disk is fixedly installed on one side of the rotating shaft;
[0008] The second adjusting rod is threadedly connected to the rear side of the clamping block, a spring is fixedly installed at the end of the second adjusting rod, and a clamping groove is opened at the center of the outer wall of the front side of the clamping block.
[0009] Through the above technical scheme, when it is necessary to test the triangular needle, the triangular needle is placed between the two sliders, and the first adjusting rod is rotated. At this time, the two sliders move inward along the slide toward each other to clamp the triangular needle. After clamping, the adjusting disk is rotated, and the adjusting disk drives the rotating shaft to rotate, and the rotating shaft drives the gear to rotate. The clamping block moves upward along the slider through the gear and the rack. The step height is adjusted so that the two can adapt to the dimensions of the other two sides of the triangular needle that are not involved in the test, so that it will not shake or fall off during the test. When it is necessary to clamp the triangular needle, only two triangular needles need to be vertically inserted between the two clamping blocks, and the triangular needle is clamped through the clamping groove. The spring at the end of the second adjusting rod is exposed by rotating the second adjusting rod, so that the equipment can clamp triangular needles of different sizes.
[0010] In a preferred embodiment, the thread directions of the connection between the first adjusting rod and the two sliding blocks are opposite.
[0011] In a preferred embodiment, a through slot adapted to the second adjusting rod is provided at the center of the rear side of the sliding block.
[0012] In a preferred embodiment, a through hole adapted to the spring is provided at the center of the clamping groove.
[0013] In a preferred embodiment, the outer walls of the ends of the first adjusting rod and the second adjusting rod are both provided with friction patterns.
[0014] The above technical solution facilitates the rotation of the first adjusting rod and the second adjusting rod.
[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are as follows: the utility model provides a special fixture for testing the Vickers hardness of a small-sized triangular needle.
[0016] 1. Place the triangular needle between the two sliders, and rotate the first adjusting rod. The two sliders move inward along the slide table to clamp the triangular needle. After clamping, rotate the adjusting disk to drive the shaft to rotate, and the shaft drives the gear to rotate. The gear cooperates with the rack to make the clamping block move upward along the slider, and adjust the step height to make the two adapt to the other two sides of the triangular needle that are not involved in the test, so that it will not shake or fall off during the test.
[0017] 2. When it is necessary to clamp the triangular needles, only two triangular needles need to be vertically inserted between the two clamping blocks, and the triangular needles are clamped through the clamping grooves. The spring at the end of the second adjusting rod is exposed by rotating the second adjusting rod, so that the device can clamp triangular needles of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model;
[0019] Figure 2 It is a cross-sectional view of the slider in the figure of the utility model;
[0020] Figure 3 It is a structural schematic diagram of the clamping block in the figure of the utility model.
[0021] Markings in the figure:
[0022] 1-fixed seat; 2-slide table; 3-sliding block; 4-first adjusting rod; 5-clamping block; 6-rack; 7-rotating shaft; 8-gear; 9-adjusting disk; 10-second adjusting rod; 11-spring; 12-clamping groove. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] The following will be combined Figure 1-3 A small-sized triangular needle special fixture for Vickers hardness testing according to an embodiment of the utility model is described in detail.
[0025] Example:
[0026] A small-size triangular needle Vickers hardness test fixture, comprising:
[0027] A fixed seat 1 is provided with a slide table 2 in the middle of its upper surface, and two sliders 3 arranged opposite to each other are slidably connected to the upper surface of the slide table 2, and a first adjusting rod 4 is rotatably connected inside the slide table 2, and the first adjusting rod 4 is threadedly connected to the bottom of the two sliders 3, and the thread directions of the first adjusting rod 4 and the two sliders 3 are opposite, when the triangular needle needs to be tested, the triangular needle is placed between the two sliders 3, and the first adjusting rod 4 is rotated, and the two sliders 3 move inwards toward each other along the slide table 2 to clamp the triangular needle;
[0028] The clamping block 5 is slidably connected to the front side of the slider 3. The clamping block 5 is located inside the slider 3 and fixedly installed with a rack 6 at one end. The slider 3 is rotatably connected with a rotating shaft 7. A gear 8 is fixedly installed on the outer wall of the rotating shaft 7. The gear 8 is meshed with the rack 6. An adjusting disk 9 is fixedly installed on one side of the rotating shaft 7. By rotating the adjusting disk 9, the adjusting disk 9 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the gear 8 to rotate. The clamping block 5 moves upward along the slider 3 through the gear 8 and the rack 6. The step height is adjusted so that the two adapt to the other two sides of the triangular needle that are not involved in the test, so that it does not shake or fall off during the test.
[0029] The second adjusting rod 10 is threadedly connected to the rear side of the clamping block 5. The outer walls of the ends of the first adjusting rod 4 and the second adjusting rod 10 are provided with friction patterns to facilitate the rotation of the first adjusting rod 4 and the second adjusting rod 10. A through groove matched with the second adjusting rod 10 is opened in the center of the rear side of the slider 3. A spring 11 is fixedly installed at the end of the second adjusting rod 10. A clamping groove 12 is opened in the center of the front outer wall of the clamping block 5. A through hole matched with the spring 11 is opened in the center of the clamping groove 12. When the triangular needle needs to be clamped, only two triangular needles need to be vertically inserted between the two clamping blocks 5. The triangular needle is clamped through the clamping groove 12. The second adjusting rod 10 is rotated to expose the spring 11 at the end of the second adjusting rod 10, so that the device can clamp triangular needles of different sizes.
[0030] Working principle:
[0031] When it is necessary to test the triangular needle, place the triangular needle between the two sliders 3, and rotate the first adjusting rod 4. At this time, the two sliders 3 move inward toward each other along the slide 2 to clamp the triangular needle. After clamping, by rotating the adjusting disk 9, the adjusting disk 9 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the gear 8 to rotate. The gear 8 cooperates with the rack 6 to make the clamping block 5 move upward along the slider 3, and adjust the step height so that the two can adapt to the other two sides of the triangular needle that are not involved in the test, so that it will not shake or fall off during the test. When it is necessary to clamp the triangular needle, only two triangular needles need to be vertically inserted between the two clamping blocks 5, and the triangular needle is clamped through the clamping groove 12. The second adjusting rod 10 is rotated to expose the spring 11 at the end of the second adjusting rod 10, so that the equipment can clamp triangular needles of different sizes.
[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A small-sized triangular needle Vickers hardness test fixture, characterized by: include: A fixed seat (1) is provided with a slide table (2) in the middle of its upper surface, the upper surface of the slide table (2) is slidably connected to two sliders (3) arranged opposite to each other, a first adjustment rod (4) is rotatably connected inside the slide table (2), and the first adjustment rod (4) is threadedly connected to the bottom of the two sliders (3); A clamping block (5) is slidably connected to the front side of the slider (3); a rack (6) is fixedly installed on one end of the clamping block (5) located inside the slider (3); a rotating shaft (7) is rotatably connected inside the slider (3); a gear (8) is fixedly installed on the outer wall of the rotating shaft (7); the gear (8) is meshed with the rack (6); and an adjusting disk (9) is fixedly installed on one side of the rotating shaft (7); The second adjusting rod (10) is threadedly connected to the rear side of the clamping block (5); a spring (11) is fixedly installed at the end of the second adjusting rod (10); and a clamping groove (12) is provided at the center of the front outer wall of the clamping block (5).
2. A small-size triangular needle Vickers hardness test fixture as claimed in claim 1, characterized in that: The thread directions of the first adjusting rod (4) and the connection between the two sliding blocks (3) are opposite.
3. A small-size triangular needle Vickers hardness test fixture as claimed in claim 1, characterized in that: A through slot matching the second adjusting rod (10) is provided at the rear center of the sliding block (3).
4. A small-size triangular needle Vickers hardness test fixture as claimed in claim 1, characterized in that: A through hole matching the spring (11) is provided at the center of the clamping groove (12).
5. A small-size triangular needle Vickers hardness test fixture as claimed in claim 1, characterized in that: The outer walls of the ends of the first adjustment rod (4) and the second adjustment rod (10) are both provided with friction patterns.