CN108801909A - A kind of sharp system safety testing device of grinding wheel and method - Google Patents
A kind of sharp system safety testing device of grinding wheel and method Download PDFInfo
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- CN108801909A CN108801909A CN201810547599.9A CN201810547599A CN108801909A CN 108801909 A CN108801909 A CN 108801909A CN 201810547599 A CN201810547599 A CN 201810547599A CN 108801909 A CN108801909 A CN 108801909A
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- grinding
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/06—Investigating by removing material, e.g. spark-testing
Abstract
The invention discloses a kind of sharp system safety testing device of grinding wheel, including grinding machine, the grinding wheel that is arranged on grinding machine and grinding wheel controller, workbench is additionally provided on grinding machine；It further include sharpness test system, the sharpness test system includes test specimen, pressure sensor, platform, piston, oil cylinder, proportioning valve, fuel tank, capture card, computer, the grinding wheel is located on test specimen, the bottom of test specimen is fixed at the top of pressure sensor, pressure sensor is located on test platform, the test platform is vertical with the output shaft of piston to be fixedly installed, and displacement sensor is also equipped on test platform.The present invention is specifically in grinding, and test specimen can provide certain pressure and sustainable a period of time with respect to grinding wheel, and the information after grinding terminates according to each sensor feedback manual or automatic can calculate grinding wheel sharpness.Further to further investigate grinding wheel sharpness, grinding wheel removing amount can be provided with grinding time changing curve and grinding force with grinding time changing curve.
Description
Technical field
The present invention relates to grinding wheel manufacture and applied technical field more particularly to a kind of sharp system safety testing device of grinding wheel and sides
Method.
Background technology
Currently, cutlery is the tool for carrying out machining, in order to trippingly cut workpiece, country and industry all needles
Relevant standard or instrument have been worked out to the sharpness of various cutleries.Such as clinical syringe needles, acupuncture needle sharpness testing standard
（GB/T4506-1984）；Cutter sharpness testing standard《QBT 2141.2-1995》Deng.Grinding wheel is as precision machined
Main cutlery, sharpness are even more to reflect the important indicator of processing performance, and there has been no unified grinding wheel sharpness in the whole world at present
Testing standard and test method.
For the detection of grinding wheel sharpness, a large amount of research and experiment are academicly also being carried out both at home and abroad, wherein mainly
Have：The method that Nakayama and Takagui in 1980 first proposed lever reinforcing mill steel ball（Single-crystal diamond trimmer is repaiied
Whole efficiency analysis, mechanical engineer, 2001-3）；Nineteen ninety Wu Guisheng is based on lever reinforcing principle test, it is found that reinforcing lever is difficult
To maintain constant force griding（Influence of the diamond roller trimming parameter to wheel face sharpness, grinding machine and grinding 1990-1）；
There is within 1991 scholar to propose the method that steel disk replaces mill steel ball；Woods in 1997 states temperature using grinding wheel preliminary grinding stage or whole mill stage
Practical work piece every changing rule for turning grinding depth and the two information of duration judge（Based on adaptive resonance theory
Grinding process grinding wheel sharpness Study of recognition, China Mechanical Engineering, 1997-2）；Zhang Shaohe is sentenced by Cutting power within 2006
Disconnected grinding wheel sharpness（Experimental study on sharpness of diamond sawblades, PM technique, 2006.2）；Somebody proposes using removing
Total amount, material removal rate, grinding ratio can be evaluated, etc..But all there is this or that in these methods, especially repeatable
Poor problem.
Invention content
The object of the present invention is to provide a kind of sharp system safety testing device of grinding wheel and methods, can accurately and fast judge
The sharp state of grinding wheel, it is convenient and practical, reproducible.
The technical solution adopted by the present invention is：
A kind of sharp system safety testing device of grinding wheel, including grinding machine, the grinding wheel that is arranged on grinding machine and grinding wheel controller are also set on grinding machine
There is workbench；Further include sharpness test system, it includes test specimen, pressure sensor, platform, work that the sharpness, which tests system,
Plug, oil cylinder, proportioning valve, fuel tank, capture card, computer, the grinding wheel are located on test specimen, and the bottom of test specimen is fixed at pressure
The top of force snesor, pressure sensor are located on test platform, and the test platform is vertical with the output shaft of piston solid
It is fixed to be arranged, it is also equipped with displacement sensor on test platform, is used for the displacement of monitoring and test platform；The oil circuit of oil cylinder passes through
Proportioning valve is connected with the oil outlet of oil cylinder, the pressure sensor, displacement sensor output end pass through capture card respectively
It is connect with the input terminal of computer, the control output end of computer is defeated with the control of grinding wheel controller, proportioning valve and fuel tank respectively
Enter end to be connected.
The Grinder bench is surface grinding machine or cylindrical grinder or cutter and tool grinding machine.
3. a kind of test method based on the sharp system safety testing device of grinding wheel described in claim 1, it is characterised in that：Under
State step：
1）Grinding test specimen is selected according to specific requirement, and measures sample dimensions, it then will be on test specimen clamping to pressure sensor；
2）Then the relevant parameter that input grinding is controlled by computer sends control signals to grinding wheel controller, control grinding wheel
Carry out grinding experiment；
3）Computer calculates the time of grinding experiment, and the data that real-time reception pressure sensor, displacement sensor transmit, and handle
Upper and lower displacement amount H, the grinding force F and grinding time T for the test specimen that above-mentioned real time monitoring obtains are recorded, until grinding stops
Only；
4）Size after test specimen is ground finally is measured, calculates and removes volume V, V=S*H by the volume that grinding experiment is removed；
5）Calculate wheel grinding sharpness index：Grinding wheel sharpness f=α * β *（V/（S*T*F））
α is grinding wheel coefficient, related with grinding wheel essential characteristic；β is test specimen coefficient, related with material for test fundamental characteristics.V test specimens are ground
Except volume, S test specimens and grinding wheel contact area, T grinding times, F grinding forces.
It includes grinding wheel parameter, test specimen parameter to control the relevant parameter of input grinding by computer in the step 2,
Apply external grinding force size and its permissible error size and grinding experiment duration.
Further include that computer obtains grinding wheel mill by the upper and lower displacement amount H of test specimen and grinding time T in the step 4
Except amount with grinding time changing curve, grinding force with changing over time curve.
The step 3 further includes following steps：When computer real-time reception pressure sensor size, and with the pressure of setting
Force value size is compared, and when then exceeding error range, is sent control signals to corresponding proportioning valve and is adjusted into fuel-displaced
Amount, and then the pressure for increasing or reducing cylinder to test specimen is adjusted, and then to keeping stable pressure to set in test specimen grinding experiment
It sets, greatly promotes experimental data accuracy.
The present invention be specifically in grinding, test specimen with respect to grinding wheel can provide certain pressure and it is one section sustainable when
Between, the information after grinding terminates according to each sensor feedback manual or automatic can calculate grinding wheel sharpness.In addition, being into one
Step further investigation grinding wheel sharpness, can provide grinding wheel removing amount（Abrade volume or height）With grinding time changing curve and
Grinding force is with grinding time changing curve.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the electric control schematic diagram of the present invention；
Fig. 3 is the flow chart of the present invention.
Specific implementation mode
As shown in Figure 1,2 and 3, the present invention include grinding machine, the grinding wheel 1 that is arranged on grinding machine and grinding wheel controller；On grinding machine
It is provided with workbench 12, further includes sharpness test system, it includes test specimen 2, pressure sensor that the sharpness, which tests system,
3, platform 4, piston 6, oil cylinder 7, proportioning valve 8, fuel tank 9, capture card 11, computer 10, the grinding wheel 1 are located on test specimen 2, examination
The bottom of part 2 is fixed at the top of pressure sensor 3, and pressure sensor 3 is located on test platform 4, the test
Platform 4 is vertical with the output shaft of piston 6 to be fixedly installed, and displacement sensor 5 is also equipped on test platform 4, is used for monitoring and test
The displacement of platform；The oil circuit of oil cylinder 7 is connected by proportioning valve 8 with the oil outlet of fuel tank 9, the pressure sensor 3,
The output end of displacement sensor 5 is connect by capture card 11 with the input terminal of computer respectively, the control output end point of computer
It is not connected with the control signal of grinding wheel controller, proportioning valve 8 and fuel tank 9.
The Grinder bench is surface grinding machine or cylindrical grinder or cutter and tool grinding machine.When being tested on surface grinding machine, sand
Wheel is located on test specimen；Test specimen is located on force snesor, and force snesor is located on test platform, and platform is connected with piston,
Displacement sensor is also equipped on platform, oil cylinder is connected with proportioning valve, and proportioning valve is connected with fuel tank, computer by capture card with
Force snesor, displacement sensor, proportioning valve, fuel tank etc. are connected.The present invention can not only monitor grinding force, displacement, ratio in real time in this way
Example valve, fuel tank situation, and be conducive to stablize grinding status and stability control is carried out to it by oil circuit.
And grinding force of the present invention is predeterminable, realizes constant pressure grinding, and the control for passing through pressure sensor and oil circuit is realized
Constant force griding；Different grinding methods or different grinding composite tests can also be carried out using computer, tested under different condition
Grinding wheel sharpness.The present invention can provide grinding wheel removing amount in use, by data record（Abrade volume or height）
With grinding time changing curve, grinding force with grinding time changing curve.Grinding machine work can also be used during the experiment simultaneously
The locomotive function of itself of platform 12 realizes that test specimen 2 moves back and forth.
A kind of test method based on the sharp system safety testing device of grinding wheel described in claim 1, using following step：
1）Grinding test specimen is selected according to specific requirement, and measures sample dimensions, it then will be on test specimen clamping to pressure sensor；
2）Then the relevant parameter that input grinding is controlled by computer sends control signals to grinding wheel controller, control grinding wheel
Carry out grinding experiment；The relevant parameter for controlling input grinding in the step 2 by computer includes that the size of grinding wheel is joined
The dimensional parameters of number, test specimen apply external grinding force size and its permissible error size and grinding experiment duration.
3）Computer calculates the time of grinding experiment, and the data that real-time reception pressure sensor, displacement sensor transmit,
And upper and lower displacement amount H, the grinding force F of the test specimen that above-mentioned real time monitoring obtains and grinding time T are recorded, until mill
Cut stopping；The step 3 further includes following steps：When computer real-time reception pressure sensor size, and with the pressure of setting
Force value size is compared, and when then exceeding error range, is sent control signals to corresponding proportioning valve and is adjusted into fuel-displaced
Amount, and then the pressure for increasing or reducing cylinder to test specimen is adjusted, and then to keeping stable pressure to set in test specimen grinding experiment
It sets, greatly promotes experimental data accuracy.
4）Finally measure size after test specimen 2 is ground：Diameter 20mm is constant, length 5.23mm, and calculating is removed by grinding experiment
Volume remove volume V, V=S*H；Further include that computer passes through the upper and lower displacement amount H of test specimen and grinding in the step 4
Time T obtains grinding wheel removing amount with grinding time changing curve, grinding force with changing over time curve.
5）Calculate wheel grinding sharpness index：Grinding wheel sharpness f=α * β *（V/（S*T*F））
α is grinding wheel coefficient, related with grinding wheel essential characteristic；β is test specimen coefficient.Grinding wheel sharpness numerical value is bigger, illustrates grinding wheel cutting edge of a knife or a sword
Profit is better.
It is illustrated below with specific experimental data：
1）According to selection grinding test specimen 2 is required, 2 size of test specimen is measured, it will be on 2 clamping of test specimen in place force snesor 3；
2）Constant pressure grinding is selected, relevant parameter is inputted（Grinding wheel：250 × 25 × 75, test specimen：20mm × 20mm × 20mm, grinding
Power 10N and its permissible error ± 1N, grinding time 3min etc.）；
3）Start grinding test system, start timing, when monitoring and record 2 upper and lower displacement amount H of test specimen, grinding force F, grinding in real time
Between T, until grinding stop；
4）Measure size after test specimen 2 is ground：Diameter 20mm is constant, length 5.23mm；
5）Calculate wheel grinding sharpness index：
Due to grinding force F=10N, it is ground time T=180s, test specimen is ground area S=400mm2, and test specimen abrades height H=4.77mm,
Test specimen abrades volume Vw=8000mm3, takes α=β=1, then wheel grinding sharpness f=8000/（400×10×180）=
0.0111mm3/（mm2.N.s)
Further, grinding wheel is modified, tests grinding wheel sharpness, 6 test results such as table 1, it is seen that test result has very well
Consistency, repeatability.
Claims (6)
1. a kind of sharp system safety testing device of grinding wheel, including grinding machine, the grinding wheel that is arranged on grinding machine and grinding wheel controller, on grinding machine also
Equipped with workbench；It is characterized in that：Further include sharpness test system, it includes test specimen, pressure that the sharpness, which tests system,
Sensor, platform, piston, oil cylinder, proportioning valve, fuel tank, capture card, computer, the grinding wheel are located on test specimen, the bottom of test specimen
Portion is fixed at the top of pressure sensor, and pressure sensor is located on test platform, the test platform and piston
Output shaft be vertically fixedly installed, displacement sensor is also equipped on test platform, be used for monitoring and test platform displacement；
The oil circuit of oil cylinder is connected by proportioning valve with the oil outlet of oil cylinder, the pressure sensor, displacement sensor output end
Connected respectively by the input terminal of capture card and computer, the control output end of computer respectively with grinding wheel controller, proportioning valve
It is connected with the control signal of fuel tank.
2. the sharp system safety testing device of grinding wheel according to claim 1, it is characterised in that：The Grinder bench is plane
Grinding machine or cylindrical grinder or cutter and tool grinding machine.
3. a kind of test method based on the sharp system safety testing device of grinding wheel described in claim 1, it is characterised in that：Using following steps
Suddenly：
1）Grinding test specimen is selected according to specific requirement, and measures sample dimensions, it then will be on test specimen clamping to pressure sensor；
2）Then the relevant parameter that input grinding is controlled by computer sends control signals to grinding wheel controller, control grinding wheel
Carry out grinding experiment；
3）Computer calculates the time of grinding experiment, and the data that real-time reception pressure sensor, displacement sensor transmit, and handle
Upper and lower displacement amount H, the grinding force F and grinding time T for the test specimen that above-mentioned real time monitoring obtains are recorded, until grinding stops
Only；
4）Size after test specimen is ground finally is measured, calculates and removes volume V, V=S*H by the volume that grinding experiment is removed；
5）Calculate wheel grinding sharpness index：Grinding wheel sharpness f=α * β *（V/（S*T*F））Wherein,
α is grinding wheel coefficient, related with grinding wheel essential characteristic；β is test specimen coefficient, related with material for test fundamental characteristics；
V test specimens abrade volume, S test specimens and grinding wheel contact area, T grinding times, F grinding forces.
4. grinding wheel sharpness test method according to claim 3, it is characterised in that：Pass through calculating in the step 2
The relevant parameter of machine control input grinding includes grinding wheel parameter, test specimen parameter, applies external grinding force size and its license misses
Poor size and grinding experiment duration.
5. grinding wheel sharpness test method according to claim 4, it is characterised in that：Further include meter in the step 4
Calculation machine by the upper and lower displacement amount H of test specimen and grinding time T obtain grinding wheel removing amount with grinding time changing curve, grinding force with
Change over time curve.
6. grinding wheel sharpness test method according to claim 5, it is characterised in that：The step 3 further includes as follows
Step：It is compared when computer real-time reception pressure sensor size, and with the pressure value size of setting, then exceeds error
It when range, sends control signals to corresponding proportioning valve and is adjusted into oil pump capacity, and then adjust and increase or reduce cylinder pair
The pressure of test specimen, and then to keeping stable pressure to be arranged in test specimen grinding experiment, greatly promote experimental data accuracy.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112816356A (en) * | 2021-01-18 | 2021-05-18 | 中铁隆昌铁路器材有限公司 | Grinding performance test device for quick grinding wheel |
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