CN216284621U - Leeb hardness tester constant force adsorbs auxiliary assembly - Google Patents
Leeb hardness tester constant force adsorbs auxiliary assembly Download PDFInfo
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- CN216284621U CN216284621U CN202122809583.0U CN202122809583U CN216284621U CN 216284621 U CN216284621 U CN 216284621U CN 202122809583 U CN202122809583 U CN 202122809583U CN 216284621 U CN216284621 U CN 216284621U
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Abstract
The utility model relates to a constant-force adsorption auxiliary device of a Leeb hardness tester, which consists of an impact device support ring, an annular neodymium-iron-boron magnet and a fixing bolt, wherein 3 screw holes are circumferentially distributed on the annular neodymium-iron-boron magnet. The inner diameter size of the impact device support ring is matched with the outer diameter size of the Leeb hardness tester impact device, the outer diameter size of the impact device support ring is matched with the inner diameter size of the annular neodymium iron boron magnet, and the annular neodymium iron boron magnet can be sleeved outside the impact device support ring and kept on the same horizontal plane. When the ferromagnetic material workpiece is subjected to the hardness detection in the Richter scale, a constant adsorption force is formed between the support ring of the impact device and the detected workpiece by utilizing the magnetic force between the annular neodymium-iron-boron magnet and the ferromagnetic material. The utility model has simple structure and convenient use, and can provide constant adsorption force between the Leeb hardness tester impact device and the tested workpiece so as to keep the Leeb hardness tester impact device and the tested workpiece from generating relative displacement and ensure the Leeb hardness testing precision.
Description
Technical Field
The utility model relates to a Leeb hardness tester auxiliary device, in particular to a Leeb hardness tester constant force adsorption auxiliary device which can realize constant adsorption force between a support ring of the Leeb hardness tester and a tested workpiece when the Leeb hardness tester detects the Leeb hardness of a ferromagnetic material.
Background
The method for detecting the hardness of the material by the aid of the hardness detection technology is widely applied as a material hardness detection method, and the hardness of the detected workpiece can be quickly obtained. The principle is that an impact body with certain mass impacts the surface of a sample under certain test force, the impact speed and rebound speed of the impact body at a position 1mm away from the surface of the sample are measured, and voltage in direct proportion to the speed is induced by utilizing the electromagnetic principle. The hardness value in the form of the Leeb's number is expressed as the ratio of the rebound velocity of the impact body to the impact velocity. The richter hardness test is usually performed using a portable richter hardness tester.
However, any accurate and effective test requires that various extraneous interferences be avoided as much as possible. For dynamic hardness detection, the system stability is very important.
The system herein includes aspects of the environment, the test piece, the impact device, and the operating process. Stability is difficult to quantitatively require, the stability can only be improved as far as possible, the higher the stability is, the more accurate the test value is, the better the repeatability of data is, and the environmental stability means that a place for placing a sample cannot vibrate, such as a pedestal, a material pile, a material rack and the like. Obviously, the stability of running pipelines, working punching machines and the like is difficult to guarantee. The sample is also stable when placed in a stable environment, and the possible displacement changes such as slippage, rotation and swing are avoided. The Leeb hardness tester impact device should be placed stably on the test piece without relative shaking. The end face of the impact device should be in close contact with the surface of the test piece.
Thus, GB/T17394.1-2014 "metallic Material hardness in Rich tests part 1: the test methods "clearly stipulate: relative movement between the test piece and the impact device cannot be generated in the test process. The hand that requires the testing personnel to hold percussion device in the experiment should be stable and exert oneself to experimental direction, makes percussion device steadily compress tightly on the sample, and in order to guarantee the stability of hand, operator's health should also be stable, avoids reducing operation error as far as possible. This requires a relatively high number of detectors.
At present, the portable Leeb hardness tester impact device has no device and can control the test process, relative movement between a test piece and the impact device can not be generated, the test piece and the impact device are all manually controlled by detection personnel, so that the operation intensity of the detection personnel is high, the real-time control on the impact device can not be realized, the abrasion of the impact device caused by too large applied pressure can be caused, and the overlarge operation error caused by too small or unstable applied pressure can also exist.
In view of the above, it is necessary to develop a constant force adsorption auxiliary device for a richter hardness tester to improve the richter hardness testing accuracy.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a constant-force adsorption auxiliary device of a Leeb hardness tester, which has a simple structure and is convenient to use, and can provide constant adsorption force between the Leeb hardness tester impact device and a tested workpiece so as to keep the Leeb hardness tester impact device and the tested workpiece from generating relative displacement and ensure the detection precision of the Leeb hardness tester.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the constant force adsorption auxiliary equipment of the Leeb hardness tester is characterized by comprising an impact device support ring, an annular neodymium-iron-boron magnet and a fixing bolt.
Wherein, annular neodymium iron boron magnetism iron boron circumference distributes 3 screw.
The annular neodymium iron boron magnet is screwed into the fixing bolt through the screw hole, and can be fixed on the support ring of the impact device.
The inner diameter of the supporting ring of the impact device is matched with the outer diameter of the impact device of the Leeb hardness tester, so that the impact device of the Leeb hardness tester is sleeved in the supporting ring of the impact device and is firmly connected.
The outer diameter of the impact device support ring is matched with the inner diameter of the annular neodymium iron boron magnet, and the annular neodymium iron boron magnet can be sleeved outside the impact device support ring and is kept on the same horizontal plane.
Wherein, the area S of the annular neodymium-iron-boron magnet1And the adsorption force F to the detected workpiece meets the following requirements:
F×S2/(S1+S2)＝30 (N)
in the formula: f: the adsorption force of the annular neodymium iron boron magnet on the detected workpiece is as follows: n is a radical of
S1: area of annular neodymium iron boron magnet, unit: m is2
S2: impingement device support ring area, unit: m is2
By selecting the annular neodymium-iron-boron magnet which meets the relation, the constant adsorption force of 30N between the support ring of the impact device and the detected workpiece can be realized.
When the ferromagnetic material workpiece is subjected to the Richter hardness test, the constant adsorption force is formed between the support ring of the impact device and the detected workpiece by utilizing the magnetic force between the annular neodymium-iron-boron magnet and the ferromagnetic material.
When the Leeb hardness tester is used for operation, firstly, a Leeb hardness tester impact device which meets the requirement of a workpiece to be tested is selected, then, an impact device support ring is selected according to the outer diameter size of the Leeb hardness tester impact device, then, an annular neodymium-iron-boron magnet is selected according to the outer diameter size of the impact device support ring, the area and the adsorption force of the annular neodymium-iron-boron magnet to the workpiece to be tested meet the requirement, the annular neodymium-iron-boron magnet is sleeved on the impact device support ring in an outer sleeved mode, the position of the annular neodymium-iron-boron magnet is adjusted, the annular neodymium-iron-boron magnet and the impact device support ring are kept on the same horizontal plane, 3 fixing bolts are respectively screwed through screw holes, and the annular magnet and the impact device support ring are firmly fixed.
During detection, the host machine of the Richter hardness tester is calibrated and adjusted according to the use instruction of the instrument, the detection surface of a detected workpiece is processed to meet the roughness requirement, then the constant-force self-absorption auxiliary equipment of the Richter hardness tester is close to the detected workpiece, at the moment, the support ring of the impact device is self-absorbed on the surface of the detected workpiece under the action of magnetic force, the host machine of the Richter hardness tester drives the impact device to impact, then the display value of the host machine of the Richter hardness tester is read, the position is detected for at least five times according to the standard requirement, the average value of the Richter hardness is obtained, and the detection of the Richter hardness tester is completed.
By adopting the technical scheme, the utility model has the beneficial effects that: the problem of can't realize the control of adsorption force between real-time impact device and the test piece among the present hardness in-process of the Richter scale detection is solved for hardness in the Richter scale detects more standardizedly, accords with standard requirement more, has improved the measurement accuracy, has reduced because of taking place the measuring error that the change of displacement such as sliding, rotation and swing brought, and intensity of labour has significantly reduced.
The present invention will be described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a structural view of a constant force adsorption assisting apparatus for a Leeb hardness tester of the present invention.
Fig. 2 is a bottom view of a ledeburite durometer constant force adsorption aid of the present invention.
In the figure: 1-impact device support ring, 2-annular neodymium iron boron magnet, 3-screw hole, 4-fixing bolt, 5-Leeb hardness tester host and 6-Leeb hardness tester impact device
Detailed Description
As shown in figure 1, the constant-force adsorption auxiliary equipment for the Leeb hardness tester comprises an impact device support ring 1, an annular neodymium-iron-boron magnet 2 and a fixing bolt 4.
As shown in fig. 1, the ring-shaped ndfeb magnet 2 of the present invention has 3 screw holes 3 distributed circumferentially.
In one embodiment of the present invention, the ring-shaped ndfeb magnet 2 is screwed into the fixing bolt 4 through the screw hole 3 to fix the ring-shaped ndfeb magnet 2 on the support ring 1 of the impact device.
In one embodiment of the utility model, the inner diameter of the support ring 1 of the impact device is matched with the outer diameter of the impact device 6 of the Richter hardness tester, the outer diameter of the support ring 1 of the impact device is matched with the inner diameter of the annular neodymium-iron-boron magnet 2, and the annular neodymium-iron-boron magnet 2 can be sleeved outside the support ring 1 of the impact device and can be kept on the same horizontal plane.
In an embodiment of the utility model, when a richter hardness tester is used for operation, firstly, a richter hardness tester impact device 6 which meets a tested workpiece is selected, then, an impact device support ring 1 is selected according to the outer diameter size of the richter hardness tester impact device 6, then, an annular neodymium-iron-boron magnet 2 is selected according to the outer diameter size of the impact device support ring 1, the area and the adsorption force of the annular neodymium-iron-boron magnet 2 to the tested workpiece meet requirements, the annular neodymium-iron-boron magnet 2 is sleeved on the impact device support ring 1, the position of the annular neodymium-iron-boron magnet 2 is adjusted, the annular neodymium-iron-boron magnet 2 and the impact device support ring 1 are kept on the same horizontal plane, and 3 fixing bolts 4 are respectively screwed through screw holes 3, so that the annular magnet 2 and the impact device support ring 1 are firmly fixed. When the ferromagnetic material workpiece is subjected to the Richter hardness test, a constant adsorption force is formed between the impact device support ring 1 and the detected workpiece by utilizing the magnetic force between the annular neodymium-iron-boron magnet 2 and the ferromagnetic material.
In an embodiment of the utility model, the host computer 5 of the Richter hardness tester is calibrated and adjusted according to the instruction of the instrument during detection, the detected surface of the detected workpiece is processed to meet the requirement of roughness, then the constant force self-absorption auxiliary equipment of the Richter hardness tester is close to the detected workpiece, at the moment, the supporting ring 1 of the impact device is self-absorbed on the surface of the detected workpiece due to the action of magnetic force, the host computer 5 of the Richter hardness tester drives the impact device 6 to impact, then the display value of the host computer 5 of the Richter hardness tester is read, and the position is detected for at least five times according to the standard requirement to obtain the average value of the Richter hardness, thus completing the detection of the Richter hardness test.
In summary, according to the constant-force adsorption auxiliary equipment for the richter hardness tester, when the richter hardness test is performed on a ferromagnetic material workpiece, a constant adsorption force is formed between the impact device support ring and the tested workpiece by using the magnetic force between the annular neodymium-iron-boron magnet and the ferromagnetic material, so that the problem that the adsorption force control between the impact device and the test piece cannot be realized in real time in the existing richter hardness test process is solved, the richter hardness test is more standardized and meets the standard requirements, the measurement accuracy is improved, the measurement error caused by the displacement changes such as slippage, rotation and swing is reduced, and the labor intensity is greatly reduced.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and various modifications can be made by those skilled in the art in light of the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (3)
1. A constant force adsorption auxiliary device of a Leeb hardness tester is characterized by consisting of an impact device support ring (1), an annular neodymium iron boron magnet (2) and a fixing bolt (4);
wherein, 3 screw holes (3) are distributed on the annular neodymium iron boron magnet (2) in the circumferential direction;
the annular neodymium iron boron magnet (2) can be fixed on the impact device support ring (1) through the screw hole (3) screwed into the fixing bolt (4).
2. A reesei durometer constant force suction aid according to claim 1, characterised in that the inner diameter dimension of the impact device support ring (1) matches the outer diameter dimension of the reesei durometer impact device (6).
3. The constant-force adsorption auxiliary equipment for the Leeb hardness tester is characterized in that the outer diameter of the impact device support ring (1) is matched with the inner diameter of the annular neodymium-iron-boron magnet (2), and the annular neodymium-iron-boron magnet (2) can be sleeved outside the impact device support ring (1) and can be kept on the same horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122809583.0U CN216284621U (en) | 2021-11-17 | 2021-11-17 | Leeb hardness tester constant force adsorbs auxiliary assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122809583.0U CN216284621U (en) | 2021-11-17 | 2021-11-17 | Leeb hardness tester constant force adsorbs auxiliary assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216284621U true CN216284621U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122809583.0U Active CN216284621U (en) | 2021-11-17 | 2021-11-17 | Leeb hardness tester constant force adsorbs auxiliary assembly |
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| CN (1) | CN216284621U (en) |
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2021
- 2021-11-17 CN CN202122809583.0U patent/CN216284621U/en active Active
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Address after: 750001 5-1-701, east of Xingqing mansion, Xingqing District, Yinchuan City, Ningxia Hui Autonomous Region Patentee after: Gao Shun Patentee after: Ma Jianning Patentee after: BEIJING GUODIAN DIANKEYUAN DETECTION TECHNOLOGY Co.,Ltd. Address before: 102209 309, 3rd floor, building 6, Greenland Central Plaza, North District, future science city, Changping District, Beijing Patentee before: BEIJING GUODIAN DIANKEYUAN DETECTION TECHNOLOGY Co.,Ltd. Patentee before: Gao Shun Patentee before: Ma Jianning |