CN112816356A - Grinding performance test device for quick grinding wheel - Google Patents
Grinding performance test device for quick grinding wheel Download PDFInfo
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- CN112816356A CN112816356A CN202110061824.XA CN202110061824A CN112816356A CN 112816356 A CN112816356 A CN 112816356A CN 202110061824 A CN202110061824 A CN 202110061824A CN 112816356 A CN112816356 A CN 112816356A
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- 238000011056 performance test Methods 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 14
- 238000005096 rolling process Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000008092 positive effect Effects 0.000 abstract description 2
- 238000005498 polishing Methods 0.000 description 21
- 238000012360 testing method Methods 0.000 description 20
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 1
- 239000011365 complex material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/58—Investigating machinability by cutting tools; Investigating the cutting ability of tools
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Abstract
本发明公开了一种快速打磨砂轮磨削性能试验装置，包括工作台、工件驱动机构、测量系统和加压装置。与现有技术相比，本发明的积极效果是：本装置的工件驱动机构提供了打磨压力与打磨速度，通过调节电机转速与加压装置的压力，模拟实际打磨作业时的打磨速度与打磨压力。通过工件驱动机构带动砂轮转动，与实际作业中的砂轮工作原理相同。同时，装置配套了电气控制系统，可对砂轮的实际打磨压力、转速等进行实时测量，对液压压力与工件转速进行实时调节，最终得到与实际打磨作业相近的砂轮磨耗比，科学、准确地反映出快速打磨砂轮的打磨性能。
The invention discloses a rapid grinding wheel grinding performance test device, comprising a workbench, a workpiece driving mechanism, a measuring system and a pressing device. Compared with the prior art, the positive effect of the present invention is: the workpiece drive mechanism of the device provides grinding pressure and grinding speed, and by adjusting the motor speed and the pressure of the pressurizing device, the grinding speed and grinding pressure during the actual grinding operation are simulated. . The grinding wheel is driven to rotate by the workpiece drive mechanism, which is the same as the working principle of the grinding wheel in actual operation. At the same time, the device is equipped with an electrical control system, which can measure the actual grinding pressure and rotational speed of the grinding wheel in real time, and adjust the hydraulic pressure and the rotational speed of the workpiece in real time. Finally, the grinding wheel wear ratio similar to the actual grinding operation is obtained, which reflects scientifically and accurately. The grinding performance of the fast grinding wheel is obtained.
Description
Technical Field
The invention relates to a device for testing the grinding performance of a quick grinding wheel.
Background
With the rapid development of high-speed and heavy loads in railway transportation in China, the damage of the steel rail caused by the contact friction of wheel rails is more and more serious, diseases such as corrugation, cracks, fat edges, peeling and the like occur, and the grinding of the steel rail is the most economic and effective measure for maintaining and maintaining the surface of the steel rail. The rail grinding can prevent and eliminate the damage on the surface of the rail and prolong the service life of the rail, and is an effective and economic maintenance means.
The rapid grinding wagon drives the grinding wheel to run at a high speed, and the steel rail is ground. The grinding wheel is arranged on the rapid grinding wagon at a certain angle, and certain pressure is applied to the grinding wheel through the rapid grinding wagon to be in contact with the surface of the steel rail; meanwhile, the rapid grinding wagon advances along the steel rail to perform grinding operation on the steel rail line. The interface of the steel rail and the grinding wheel has complex material removal and tribological behavior in the steel rail grinding process.
The rail grinding technology in China starts late, the technology is not mature abroad, although the research on the rail quick grinding technology and the grinding performance test device is developed domestically, a test platform for a small sample test is used, and the difference between the rail quick grinding technology and the grinding performance test device and an actually used grinding wheel is large; and the rotating speed of the workpiece is slow, the advancing speed of actual polishing operation cannot be simulated, and the polishing performance of the rapid polishing grinding wheel cannot be scientifically and accurately reflected. In addition, the existing test device for the grinding performance of the rapid grinding wheel has the condition that the structural design is unreasonable and contradicts with the actual grinding operation condition. Therefore, a test device capable of scientifically and accurately reflecting the grinding performance of the rapid grinding wheel is needed.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a test device for the grinding performance of a quick grinding wheel.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a quick emery wheel grinding performance test device of polishing, includes workstation, work piece actuating mechanism, measurement system and pressure device, wherein:
the workbench comprises a grinding wheel, a grinding wheel clamp, an installation platform and a platform support, wherein the platform support is provided with the installation platform, and the grinding wheel clamp is fixed on the installation platform;
the workpiece driving mechanism comprises a position adjusting device, a polishing motor, a workpiece clamp and a workpiece, a guide rail is arranged in the vertical direction of the position adjusting device, a motor mounting frame is arranged on the guide rail, and the polishing motor is fixed on the motor mounting frame; the workpiece clamp is connected with a main shaft of the polishing motor;
the measuring system comprises a grinding wheel crushing identification sensor, a first pressure sensor, a second pressure sensor and a rotating speed sensor, wherein the grinding wheel crushing identification sensor, the first pressure sensor, the second pressure sensor and the rotating speed sensor are used for measuring the grinding state of a grinding wheel, the pressure applied by a hydraulic cylinder, the actual grinding pressure and the rotating speed of the grinding wheel respectively;
the pressurizing device comprises a supporting frame and an oil cylinder arranged on the supporting frame, the oil cylinder is connected with the hydraulic station through an oil pipe, and a piston of the oil cylinder pushes the motor mounting frame to move on a guide rail of the position adjusting device.
Compared with the prior art, the invention has the following positive effects:
the workpiece driving mechanism of the device provides polishing pressure and polishing speed, and the polishing speed and the polishing pressure during actual polishing operation are simulated by adjusting the rotating speed of the motor and the pressure of the pressurizing device. The grinding wheel is driven to rotate by the workpiece driving mechanism, and the working principle of the grinding wheel is the same as that of the grinding wheel in actual operation. Meanwhile, the device is matched with an electrical control system, the actual polishing pressure, the actual rotation speed and the like of the grinding wheel can be measured in real time, the hydraulic pressure and the workpiece rotation speed are adjusted in real time, the grinding wheel abrasion ratio close to the actual polishing operation is finally obtained, and the polishing performance of the rapid polishing grinding wheel is scientifically and accurately reflected.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a test device for the grinding performance of a rapid grinding wheel;
FIG. 2 is a schematic view of a structure of a rapid-sanding grinding wheel;
FIG. 3 is a schematic view of a workpiece contacting a grinding wheel friction body during a grinding test;
FIG. 4 is a schematic view of a grinding wheel mounting;
FIG. 5 is a schematic view of workpiece clamping;
description of reference numerals: 1. a hydraulic station; 2. an oil pipe; 3. a support frame; 4. an oil cylinder; 5. a first pressure sensor; 6. a position adjusting device; 7. a grinding wheel crushing identification sensor; 8. polishing the motor; 9. a motor mounting frame; 10. a workpiece holder; 11. a workpiece; 12. a grinding wheel; 13. a grinding wheel clamp; 14. a second pressure sensor; 15. a rotational speed sensor; 16. mounting a platform; 17. supporting a platform; 18. a dust collecting device; 19. a protective baffle; 20. an operation table; 121. a friction body; 122. a sleeve; 123. a rolling bearing; 124. and (4) a core rod.
Detailed Description
A test device for the grinding performance of a quick grinding wheel is shown in figure 1 and mainly comprises: the device comprises a workbench, a workpiece driving mechanism, a measuring system, an auxiliary device and an electric control system. Wherein:
the workbench mainly comprises a grinding wheel 12, a grinding wheel clamp 13, a mounting platform 16 and a platform support 17. The structure of the grinding wheel is shown in fig. 2, and comprises a friction body 121, a sleeve 122, a rolling bearing 123 and a mandrel 124, wherein the mandrel 124 passes through the center of the rolling bearing 123, and the two are in interference fit; the rolling bearings 123 are arranged at two ends of the sleeve 122, the rolling bearings 123 are in interference fit with the sleeve 122, and the friction body 121 is embedded on the sleeve 122. As shown in fig. 4, the grinding wheel 12 is mounted on a grinding wheel holder 13, a through hole is reserved in the grinding wheel holder 13, and the grinding wheel holder 13 is fixed to a mounting platform 16 by a bolt. Two grinding wheels are symmetrically arranged below the workpiece 11, the relative positions of the grinding wheels and the workpiece are shown in fig. 3, in the actual grinding process, the grinding wheels are not vertically contacted with the steel rail, an included angle exists between the grinding wheels and the steel rail, so that the grinding wheels need to be obliquely arranged relative to the workpiece, and in order to reduce the resultant force of the grinding wheels on the workpiece as much as possible, the grinding wheels are symmetrically arranged relative to the workpiece. When the workpiece 11 in a rotating state is contacted with the friction bodies 121 of the two grinding wheels 12, the workpiece 11 drives the grinding wheels 12 to rotate and generate a grinding effect, and the linear speed of the workpiece can reach 80 km/h. The actual grinding pressure of the grinding wheel can be measured by a second pressure sensor 14 mounted under the grinding wheel holder 13.
The mounting platform 16 can be suitable for mounting a rapid grinding wheel with the outer diameter phi of 120mm and the outer diameter phi of 160mm, the grinding wheel clamps 13 only need to be replaced, grinding wheels of different models can be tested, and the workbench is not driven.
The workpiece driving mechanism mainly comprises a position adjusting device 6, a grinding motor 8, a workpiece clamp 10 and a workpiece 11. Grinding motor 8 is fixed on installation frame 9, has the guide rail in position adjustment device 6 vertical direction, and installation frame 9 can drive grinding motor 8 on the guide rail and move together, and grinding motor 8's rotational speed can be adjusted through operation panel 20. As shown in fig. 5, a workpiece 11 is connected to a spindle of the grinding motor 8 through a work holder 10 to rotate with the grinding motor 8. The workpiece clamp is connected with the main shaft in a flange-like manner, and the workpiece is fixed by a screw through a circle of reserved round holes.
The measuring system comprises a grinding wheel crushing identification sensor 7, a first pressure sensor 5, a second pressure sensor 14 and a rotating speed sensor 15, and the state, the hydraulic cylinder applied pressure, the actual grinding pressure and the grinding wheel rotating speed during grinding of the grinding wheel are measured respectively. The first pressure sensor 5 is arranged below the oil cylinder 4 and used for measuring the pressure provided by the hydraulic cylinder to the grinding motor 8, and the second pressure sensor 14 is arranged below the grinding wheel clamp 13 and used for measuring the actual grinding pressure; the positions of the grinding wheel breakage identification sensor 7 and the rotating speed sensor 15 have no hard requirements, and relevant test quantity can be sensed. Each measurement data is displayed on the touch display screen of the console 20.
The auxiliary devices comprise a pressurizing device, a dust collecting device 18 and a safety protection baffle plate 19. The pressurizing device comprises a hydraulic station 1, an oil pipe 2, a supporting frame 3 and an oil cylinder 4, wherein the oil cylinder 4 is arranged on the supporting frame and is connected with the hydraulic station 1 through the oil pipe 2; the piston of the oil cylinder 4 pushes the motor mounting frame 9 to move on a guide rail of the position adjusting device 6, the second pressure sensor 14 starts to collect test force after the workpiece 11 is contacted with the grinding wheel 12, the hydraulic station 1 is provided with a needle valve control device, and the required test force can be adjusted in real time through the force value collected by the test force sensor. The pressure can be adjusted according to the operation table 20; the safety guard 19 prevents sparks from splashing and fragments from flying out when the grinding wheel is broken.
The whole control system comprises electric elements such as an industrial computer, a display, a board card and the like, controls and displays various parameters in a test in real time, draws a data curve, visually checks the test process, and prints the test data curve after the test is finished.
The working principle of the invention is as follows:
1) the rotating speed sensor 15 is arranged on the mounting platform 16 of the workbench, so that the actual rotating speed of the grinding wheel can be accurately obtained.
2) When in polishing, two grinding wheel samples 12 are symmetrically distributed on two sides of the workpiece 11, and are subjected to a grinding test simultaneously, and the states, the actual polishing pressure and the rotating speed of the two grinding wheels are measured respectively. Compared with a single grinding wheel test mode, the condition that the error of a test result is large due to the fact that the workpiece is stressed on one side is avoided.
3) Compared with the existing polishing device, the linear speed of the workpiece of the device can reach 80km/h, and the actual polishing advancing speed can be simulated.
4) The following compositions were used: the grinding wheel with the size of 1 is used for carrying out experiments, so that the interaction between the steel rail and the grinding stone in the field grinding process can be simulated more truly, the experimental result is more reliable and accurate, and more reliable experimental basis can be provided for the field steel rail grinding operation.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110061824.XA CN112816356A (en) | 2021-01-18 | 2021-01-18 | Grinding performance test device for quick grinding wheel |
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| CN202110061824.XA CN112816356A (en) | 2021-01-18 | 2021-01-18 | Grinding performance test device for quick grinding wheel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923799A (en) * | 2022-05-07 | 2022-08-19 | 北京铁福轨道维护技术有限公司 | Steel rail passive rapid grinding stone performance test bed and test method |
| CN114923800A (en) * | 2022-05-07 | 2022-08-19 | 北京铁福轨道维护技术有限公司 | Passive type rapid grinding process simulation test bed for steel rail |
| CN115452438A (en) * | 2022-09-13 | 2022-12-09 | 武汉材料保护研究所有限公司 | Double-grinding-head steel rail high-speed grinding test device capable of grinding in cross mode and test method |
| CN117848888A (en) * | 2024-01-17 | 2024-04-09 | 河北双羊砂轮制造有限公司 | Automatic detecting device for grinding wheel performance |
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| GB0026257D0 (en) * | 1999-10-27 | 2000-12-13 | Unova Uk Ltd | Crankpin grinding methods |
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| CN108871836A (en) * | 2018-09-14 | 2018-11-23 | 西南交通大学 | A kind of multi-functional steel rail grinding experimental rig |
| CN110579244A (en) * | 2019-10-21 | 2019-12-17 | 河南工业大学 | A test platform for passive grinding of rails |
| CN111122311A (en) * | 2018-10-30 | 2020-05-08 | 四川省兴文县经久精密制造有限责任公司 | Resin grinding wheel detecting system |
| CN210712396U (en) * | 2019-07-31 | 2020-06-09 | 中铁隆昌铁路器材有限公司 | Special passive form emery wheel of polishing of high-speed car of polishing |
| CN111515861A (en) * | 2020-04-28 | 2020-08-11 | 中铁隆昌铁路器材有限公司 | Assembling tool and assembling method for quickly polishing grinding wheel |
| CN214503222U (en) * | 2021-01-18 | 2021-10-26 | 中铁隆昌铁路器材有限公司 | Grinding performance test device for quick grinding wheel |
-
2021
- 2021-01-18 CN CN202110061824.XA patent/CN112816356A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0002172A1 (en) * | 1977-11-28 | 1979-06-13 | Western Gear Corporation | Workpiece conditioning grinder system |
| GB0026257D0 (en) * | 1999-10-27 | 2000-12-13 | Unova Uk Ltd | Crankpin grinding methods |
| US20060009125A1 (en) * | 2002-10-09 | 2006-01-12 | Kenji Okura | Both side grinding method and both side grinder of thin disc-like work |
| CN202057563U (en) * | 2011-04-22 | 2011-11-30 | 南京美宏研磨有限公司 | Test equipment for rubbing property of resin grinding wheel |
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| CN111515861A (en) * | 2020-04-28 | 2020-08-11 | 中铁隆昌铁路器材有限公司 | Assembling tool and assembling method for quickly polishing grinding wheel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923799A (en) * | 2022-05-07 | 2022-08-19 | 北京铁福轨道维护技术有限公司 | Steel rail passive rapid grinding stone performance test bed and test method |
| CN114923800A (en) * | 2022-05-07 | 2022-08-19 | 北京铁福轨道维护技术有限公司 | Passive type rapid grinding process simulation test bed for steel rail |
| CN115452438A (en) * | 2022-09-13 | 2022-12-09 | 武汉材料保护研究所有限公司 | Double-grinding-head steel rail high-speed grinding test device capable of grinding in cross mode and test method |
| CN117848888A (en) * | 2024-01-17 | 2024-04-09 | 河北双羊砂轮制造有限公司 | Automatic detecting device for grinding wheel performance |
| CN117848888B (en) * | 2024-01-17 | 2024-08-16 | 河北双羊砂轮制造有限公司 | Automatic detecting device for grinding wheel performance |
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