CN105628534A - High-speed friction testing method of diamond knife pre-maintenance nonferrous metal friction pair - Google Patents
High-speed friction testing method of diamond knife pre-maintenance nonferrous metal friction pair Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 72
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 53
- 239000010432 diamond Substances 0.000 title claims abstract description 53
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 title claims abstract description 19
- 238000012423 maintenance Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 30
- 230000008569 process Effects 0.000 claims abstract description 25
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 16
- 238000006748 scratching Methods 0.000 claims description 14
- 230000002393 scratching effect Effects 0.000 claims description 14
- 239000013078 crystal Substances 0.000 claims description 13
- 230000008439 repair process Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 5
- 230000009191 jumping Effects 0.000 abstract 1
- 238000010998 test method Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010017389 Frotteurism Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance 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
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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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
- G01N19/02—Measuring coefficient of friction between materials
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Abstract
The invention discloses a high-speed friction testing method of a diamond knife pre-maintenance nonferrous metal friction pair and belongs to the field of tribological testing and precise and ultra-precise machining. The high-speed friction testing method includes: fixing a nonferrous metal friction disc on an electric spindle, and performing online dynamic balancing on the friction disc; adopting a diamond knife to maintain the friction disc to reach requirements needed for testing end face jumping and coarseness; clamping a pair friction tool on a clamp connected with a force feedback device, conducting friction testing like ball-disc testing and pin-disc testing, enabling the friction disc to rotate at a specified rotating speed, enabling the pair friction tool to contact with the friction disc, maintaining pressure between the pair friction tool and the friction disc at a testing set value for testing until setting time is up, and collecting physical parameters like friction force and sound emitting signal in the process by a measuring system. By using the high-speed friction testing method, high-speed friction testing can be realized.
Description
Technical field
The invention belongs to tribology tester and precise and ultraprecise machining field, be specifically related to a kind of diamond cutter and have the high-speed friction method of testing of non-ferrous metal friction pair in advance.
Background technology
Fretting wear occurs significant for aspects such as the selection of part material, structural design, cooling and lubricating way choice at occasion, coefficient of friction and wear courses such as high-speed rotating machine, material machining, mechanism's reciprocating motions. Wherein high-speed friction abrasion has again the feature different with general fretting wear: the inertia force that 1. (linear velocity is more than 15m/s) produces at a high speed can affect the adhesive ability of lubricating oil, lubricating oil from friction area extrusion or is thrown away, causes the increase of coefficient of friction; 2. high-speed friction is along with the severe plastic deformation of actual contact point, thus adding the material flowing at contact point place, reducing shearing resistance, and then reducing coefficient of friction; 3. in high-speed friction, the plastic deformation at actual contact point place result in the generation of heat and the rising of temperature, adds the chemical affinity interaction between friction pair, thus adding coefficient of friction. In view of the complexity of high-speed friction physical process, high-speed friction abrasion has become as the hot issue of current academia research.
The test of general fretting wear includes in the various rubbing methods such as ball dish, pin dish, dish dish, four balls and associated friction abrasion tester thereof, friction pair produces break-in effect at the friction initial stage, reach stable through Frotteurism after a period of time, enter and stablize wear stage, now the physical quantity such as the relative displacement of apparatus measures friction pair, frictional force, calculates coefficient of friction and wear rate. For the existing test method of high-speed friction there is problems in that 1. in high speed processes friction pair to realize the condition of period of adjustment comparatively harsh, even without occurring stablizing wear stage and directly arriving the heavy wear stage; 2. high-speed friction process has serious wear to grinder, even if having reached stable wear stage, the geometry of grinder tool also being had occurred that obvious change, have impact on the precision of test and accuracy; 3. the produced huge inertia force of high-speed friction high speed rotation has had a strong impact on the precision of friction testing. Because the restriction of the problems referred to above, the maximum speed level of existing business friction wear testing machine is probably at 5000rpm (frictional disk of diameter 50mm), and linear velocity is roughly equal to 7.87m/s, it is difficult to reach the test request of high-speed friction.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art part, provide a kind of diamond cutter and have the high-speed friction method of testing of non-ferrous metal friction pair in advance, it is intended to reduce the period of adjustment, utilize diamond cutter that non-ferrous metal frictional disk is repaiied dish online, ensure form accuracy and the relative positional accuracy of friction pair, increased the stability of friction process by dynamic balancing simultaneously, device for force feedback can ensure to the constant pressure between grinder tool and frictional disk in friction testing process, thus realizing high-speed friction test.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of diamond cutter has the friction testing method of non-ferrous metal friction pair in advance, including:
1) being fixed on electro spindle by non-ferrous metal frictional disk, frictional disk can be rotated by electro spindle; This frictional disk is carried out on-line dynamic balancing;
2) adopting diamond single point cutter that this frictional disk is repaiied dish, be better than IT1 level forming end face run-out amount on frictional disk surface, what surface average roughness Ra was better than 5nm repaiies disk area, specifically comprises the following steps that
2-1) dish repaiied by polycrystalline diamond single-point lathe tool: vertical turning pattern, the range of speeds of frictional disk is 2000��10000rpm, polycrystalline diamond single-point lathe tool outside frictional disk with the cutting-in of 10��50 ��m along frictional disk radial feed, feed speed ranges for 0.4��1.2mm/s, and feeding distance is the 1/4��1/2 of frictional disk diameter;
2-2) dish repaiied by single-crystal diamond single-point lathe tool: vertical turning pattern, the range of speeds of frictional disk is 2000��10000rpm, single-crystal diamond single-point lathe tool outside frictional disk with the cutting-in of 2��10 ��m along frictional disk radial feed, feed speed ranges for 0.1��0.3mm/s, and feeding distance is the 1/4��1/2 of frictional disk diameter;
3) grinder will be had clamping on the fixture being connected with device for force feedback;
4) friction testing is carried out: according to the scratching speed v that need to test and the test point radius R repairing disk area build-in test point place, pass throughCalculate the setting speed n of frictional disk; Frictional disk rotates according to setting speed n, grinder tool will be moved to directly over test point, and move down and contact with frictional disk, until frictional disk with reach testing setup value to grinding Tool Room pressure, carry out friction testing; Test process ensures pressure between grinder tool and frictional disk is held constant at testing setup value by device for force feedback, simultaneously by measuring the data in system acquisition scratching process.
In one embodiment: described is friction ball or friction pin to grinder tool.
In one embodiment: described frictional disk is disc.
In one embodiment: described measurement system is dynamometry and acoustic emission system, including dynamometer, acoustic emission system, data collecting card and signal amplifier that mutual signal connects; Described to grinder tool be connected with dynamometer and acoustic emission system.
In one embodiment: the natural frequency of described dynamometer is higher than 4KHz, and dynamometry precision is better than 0.01N.
In one embodiment: the sample rate of described data collecting card is higher than 2M/s.
In one embodiment: described step 2) in, repair during dish the feeding distance of diamond single point cutter less than frictional disk radius, described in repair disk area be annular.
Except having explanation, the connected mode between the single processing procedure of each device involved in the present invention and each device is this area routine techniques, is not described in detail at this.
The technical program is compared with background technology, and it has the advantage that
The method of testing of the present invention avoids the significantly end face run-out in frictional disk high-speed rotation or circular runout by dynamic balancing, thus increasing the stability of friction process; Meanwhile, utilize single-point diamond Ultraprecision Machining that frictional disk is carried out on-line machining, it is ensured that the form accuracy of friction pair and relative positional accuracy, thus ensure that the relative motion precision of friction pair, reducing the period of adjustment of friction pair, reducing abrasion; Combining ability feedback device ensures in friction testing process the constant pressure between grinder tool and frictional disk again, further ensures precision and the accuracy of test, it is possible to realize high-speed friction test.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the method for testing principle schematic of the present invention.
Fig. 2 be the present invention repair dish Principle of Process schematic diagram.
Fig. 3 repaiies the contrast of frictional disk three-dimensional surface shape before and after dish in the embodiment of the present invention 1, wherein Fig. 3 a for before repairing dish (through conventional finish turning processes), Fig. 3 b is for after repairing dish.
Fig. 4 repaiies the contrast of frictional disk surface end face jerk value before and after dish in the embodiment of the present invention 1, wherein Fig. 4 a for before repairing dish (through conventional finish turning processes), its end face run-out amount maximum is up to 17.7 ��m; Fig. 4 b is for after repairing dish, and its end face run-out amount maximum is 2.9 ��m.
Fig. 5 is the friction coefficient curve obtained in the embodiment of the present invention 2, and wherein abscissa is fraction time, and vertical coordinate is coefficient of friction.
Fig. 6 is the friction coefficient curve obtained in comparative example of the present invention, and wherein abscissa is fraction time, and vertical coordinate is coefficient of friction.
Accompanying drawing labelling: frictional disk 1, friction ball 2, repair disk area 3, fixture 4, device for force feedback 5, diamond bit, 6.
Detailed description of the invention
Illustrate present disclosure by the examples below:
Embodiment 1
A kind of diamond cutter has the high-speed friction method of testing of non-ferrous metal friction pair in advance, and the device adopted includes:
Lathe, disc non-ferrous metal frictional disk 1 is installed on the electro spindle of lathe, and frictional disk 1 can be rotated by electro spindle;
Dynamic balance instrument, for carrying out on-line dynamic balancing to frictional disk 1;
Diamond single point cutter, for diamond bit 6, specifically polycrystalline diamond (PCD) single-point lathe tool and single-crystal diamond (ND) single-point lathe tool, for frictional disk 1 end face is repaiied dish; This diamond bit 6 is installed in support dismantledly, and is installed in lathe movably by support;
Grinder is had, and for friction ball or friction pin, clamping is on the fixture 4 being connected with device for force feedback 5; This fixture 4 is installed in support dismantledly, and is installed in lathe movably by support; Grinder tool can be passed through axial direction that fixture 4 and support rotate at frictional disk 1 and move in the radial direction, and more high more good in the positioning precision of both direction, it is desirable to it is better than 0.1 ��m; This device for force feedback 5 is that pressure-Displacement Feedback regulates device, can pass through to detect to pressure change between grinder tool and frictional disk 1, the height that grinder is had in the axial direction is finely tuned by feedback ground by fixture 4, thus ensureing pressure between grinder tool and frictional disk 1 can be kept constant;
Measurement system, for dynamometry and acoustic emission system, including dynamometer, acoustic emission system, data collecting card and signal amplifier that mutual signal connects; Grinder tool is connected by this with dynamometer and acoustic emission system; Data acquisition card signal connects computer; The natural frequency of dynamometer is higher than 4KHz, and dynamometry precision is better than 0.01N; The sample rate of described data collecting card is higher than 2M/s.
Concrete method of testing is as follows:
1) being fixed on the electro spindle of lathe by the aluminum alloy round dish type frictional disk 1 of diameter 400mm, thickness 20mm by modes such as mechanical clamp such as screws, frictional disk 1 can be rotated by electro spindle; With dynamic balance instrument, this frictional disk 1 is carried out on-line dynamic balancing, to reduce the frictional disk 1 vibration when high speed rotating, thus ensureing grinder tool can stably be contacted by scratching process with frictional disk 1;
2) adopt diamond bit 6 that this frictional disk 1 is repaiied dish, first repair dish with polycrystalline diamond single-point lathe tool, dish is repaiied again with single-crystal diamond single-point lathe tool, end face run-out amount 3 ��m is formed on frictional disk 1 surface, the annular of surface average roughness Ra 4nm repaiies disk area 3, to reduce frictional disk 1 end face run-out amount, improves surface quality, it is further ensured that in scratching process and grinder tool can stably be contacted with frictional disk 1, concretely comprise the following steps:
2-1) dish repaiied by polycrystalline diamond single-point lathe tool: the close turning pattern of vertical superfinishing, the rotating speed of frictional disk 1 is 3000rpm, polycrystalline diamond single-point lathe tool outside frictional disk 1 with the cutting-in of 10 ��m along frictional disk 1 radial feed, feed speed ranges for 0.4��1.2mm/s, and feeding distance is 160mm;
2-2) dish repaiied by single-crystal diamond single-point lathe tool: the close turning pattern of vertical superfinishing, the rotating speed of frictional disk 1 is 3000rpm, single-crystal diamond single-point lathe tool outside frictional disk 1 with the cutting-in of 2 ��m along frictional disk 1 radial feed, feed speed ranges for 0.1��0.3mm/s, and feeding distance is 160mm;
Repair the contrast of frictional disk 1 three-dimensional surface shape and end face run-out amount before and after dish and see Fig. 3 and Fig. 4 respectively;
3) grinder will be had clamping on the fixture 4 being connected with device for force feedback 5; Among the present embodiment, to the aluminium oxide ceramics friction ball 2 that grinder tool is diameter 4mm;
4) ball-dish friction testing is carried out: according to the scratching speed v that need to test and the test point radius R repairing disk area build-in test point place, pass throughCalculate the setting speed n of frictional disk 1; Among the present embodiment, R=50mm, scratching speed v=15.7m/s, n=3000rpm; Frictional disk 1 rotates according to above-mentioned setting speed n, grinder tool will be moved to directly over test point, and move down and contact with frictional disk 1, and until frictional disk 1 reaches testing setup value 1N with to mill Tool Room pressure, carry out friction testing; The fixture 4 position on the axial direction that frictional disk 1 rotates is finely tuned by test process by device for force feedback 5, to ensure that between friction ball 2 and frictional disk 1, pressure remains constant in 1N, by the data in the measurement system acquisition scratching process that is connected with friction ball 2 during test, and by signal amplifier transmission to data collecting card, transmit again and be calculated to computer, the physical quantity such as frictional force, acoustic emission signal can be obtained; The ratio of frictional force and constant contact pressure 1N is coefficient of friction, can pass through friction value calculating and obtain.
Embodiment 2
1) being fixed on the electro spindle of lathe by modes such as mechanical clamp such as the oxygen-free copper disc frictional disk screws of diameter 400mm, frictional disk can be rotated by electro spindle; With dynamic balance instrument, this frictional disk is carried out on-line dynamic balancing, to reduce the frictional disk vibration when high speed rotating, thus ensureing grinder tool can stably be contacted by scratching process with frictional disk;
2) adopt diamond bit that this frictional disk is repaiied dish, first repair dish with polycrystalline diamond single-point lathe tool, dish is repaiied again with single-crystal diamond single-point lathe tool, form end face run-out amount on frictional disk surface and be better than IT1 level, surface average roughness Ra is better than the annular of 5nm and repaiies disk area, to reduce frictional disk end face run-out amount, improves surface quality, it is further ensured that in scratching process and grinder tool can stably be contacted with frictional disk, concretely comprise the following steps:
2-1) dish repaiied by polycrystalline diamond single-point lathe tool: the close turning pattern of vertical superfinishing, the rotating speed of frictional disk is 6000rpm, polycrystalline diamond single-point lathe tool outside frictional disk with the cutting-in of 15 ��m along frictional disk radial feed, feed speed ranges for 0.4��1.2mm/s, and feeding distance is 120mm;
2-2) dish repaiied by single-crystal diamond single-point lathe tool: the close turning pattern of vertical superfinishing, the rotating speed of frictional disk is 6000rpm, single-crystal diamond single-point lathe tool outside frictional disk with the cutting-in of 5 ��m along frictional disk radial feed, feed speed ranges for 0.1��0.3mm/s, and feeding distance is 120mm;
3) grinder will be had clamping on the fixture being connected with device for force feedback; Among the present embodiment, to the non-coated carbides friction ball of P30 that grinder tool is diameter 4mm;
4) ball-dish friction testing is carried out: according to the scratching speed v that need to test and the test point radius R repairing disk area build-in test point place, pass throughCalculate the setting speed n of frictional disk; Among the present embodiment, R=101.9mm, scratching speed v=64m/s, n=6000rpm; Frictional disk rotates according to above-mentioned setting speed n, grinder tool will be moved to directly over test point, and move down and contact with frictional disk, until frictional disk with reach testing setup value 1N to grinding Tool Room pressure, carry out dry friction test; Fixture position on the axial direction that frictional disk rotates is finely tuned by test process by device for force feedback, to ensure that between friction ball and frictional disk, pressure remains constant in 1N, by the data in the measurement system acquisition scratching process that is connected with friction ball during test, and by signal amplifier transmission to data collecting card, transmit again and be calculated to computer, the physical quantity such as frictional force, acoustic emission signal can be obtained; The ratio of frictional force and constant contact pressure 1N is coefficient of friction, can pass through friction value calculating and obtain.
The friction coefficient curve that the present embodiment obtains is as shown in Figure 5.
Comparative example
This comparative example and embodiment 2 are different in that, frictional disk are not repaiied dish before carrying out friction testing. All the other equipment, parameter, method equivalent integers 2.
Result as shown in Figure 6, repaiies dish, the contact stabilization deficiency of friction ball and the frictional disk to mill, the less stable of coefficient of friction in advance in this comparative example, instantaneous friction velocity is even more than 1; And after Fig. 5 having carried out in embodiment 2 repair dish in advance, friction ball and to mill frictional disk quickly enter stable contact condition, the good stability of coefficient of friction, test result is more accurate, repair the feedback response rate request of the instrument such as force transducer in the friction testing process after dish in advance to significantly reduce, it is easy to lowering apparatus cost and reach the higher coefficient of sliding friction.
As required, can being friction ball or friction pin to grinder tool, what correspondingly carry out be ball-dish friction testing or pin-dish friction testing.
As required, repairing the parameter of dish and adjust in following scope and carry out one or many and repair dish, can form end face run-out amount on frictional disk surface and be better than IT1 level, what surface average roughness Ra was better than 5nm repaiies disk area:
2-1) dish repaiied by polycrystalline diamond single-point lathe tool: vertical turning pattern, the range of speeds of frictional disk is 2000��10000rpm, polycrystalline diamond single-point lathe tool outside frictional disk with the cutting-in of 10��50 ��m along frictional disk radial feed, feed speed ranges for 0.4��1.2mm/s, and feeding distance is the 1/4��1/2 of frictional disk diameter;
2-2) dish repaiied by single-crystal diamond single-point lathe tool: vertical turning pattern, the range of speeds of frictional disk is 2000��10000rpm, single-crystal diamond single-point lathe tool outside frictional disk with the cutting-in of 2��10 ��m along frictional disk radial feed, feed speed ranges for 0.1��0.3mm/s, and feeding distance is the 1/4��1/2 of frictional disk diameter.
The above, be only present pre-ferred embodiments, therefore can not limit scope of the invention process according to this, and the equivalence namely made according to the scope of the claims of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (7)
1. a diamond cutter has the friction testing method of non-ferrous metal friction pair in advance, it is characterised in that: including:
1) being fixed on electro spindle by non-ferrous metal frictional disk, frictional disk can be rotated by electro spindle; This frictional disk is carried out on-line dynamic balancing;
2) adopting diamond single point cutter that this frictional disk is repaiied dish, be better than IT1 level forming end face run-out amount on frictional disk surface, what surface average roughness Ra was better than 5nm repaiies disk area, specifically comprises the following steps that
2-1) dish repaiied by polycrystalline diamond single-point lathe tool: vertical turning pattern, the range of speeds of frictional disk is 2000��10000rpm, polycrystalline diamond single-point lathe tool outside frictional disk with the cutting-in of 10��50 ��m along frictional disk radial feed, feed speed ranges for 0.4��1.2mm/s, and feeding distance is the 1/4��1/2 of frictional disk diameter;
2-2) dish repaiied by single-crystal diamond single-point lathe tool: vertical turning pattern, the range of speeds of frictional disk is 2000��10000rpm, single-crystal diamond single-point lathe tool outside frictional disk with the cutting-in of 2��10 ��m along frictional disk radial feed, feed speed ranges for 0.1��0.3mm/s, and feeding distance is the 1/4��1/2 of frictional disk diameter;
3) grinder will be had clamping on the fixture being connected with device for force feedback;
4) friction testing is carried out: according to the scratching speed v that need to test and the test point radius R repairing disk area build-in test point place, pass throughCalculate the setting speed n of frictional disk; Frictional disk rotates according to setting speed n, grinder tool will be moved to directly over test point, and move down and contact with frictional disk, until frictional disk with reach testing setup value to grinding Tool Room pressure, carry out friction testing; Test process ensures pressure between grinder tool and frictional disk is held constant at testing setup value by device for force feedback, simultaneously by measuring the data in system acquisition scratching process.
2. a kind of diamond cutter according to claim 1 has the friction testing method of non-ferrous metal friction pair in advance, it is characterised in that: described is friction ball or friction pin to grinder tool.
3. a kind of diamond cutter according to claim 1 has the friction testing method of non-ferrous metal friction pair in advance, it is characterised in that: described frictional disk is disc.
4. a kind of diamond cutter according to claim 1 has the friction testing method of non-ferrous metal friction pair in advance, it is characterized in that: described measurement system is dynamometry and acoustic emission system, including dynamometer, acoustic emission system, data collecting card and signal amplifier that mutual signal connects; Described to grinder tool be connected with dynamometer and acoustic emission system.
5. a kind of diamond cutter according to claim 4 has the friction testing method of non-ferrous metal friction pair in advance, it is characterised in that: the natural frequency of described dynamometer is higher than 4KHz, and dynamometry precision is better than 0.01N.
6. a kind of diamond cutter according to claim 4 has the friction testing method of non-ferrous metal friction pair in advance, it is characterised in that: the sample rate of described data collecting card is higher than 2M/s.
7. a kind of diamond cutter according to claim 2 has the friction testing method of non-ferrous metal friction pair in advance, it is characterized in that: described step 2) in, repair during dish the feeding distance of diamond single point cutter less than frictional disk radius, described in repair disk area be annular.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018148A (en) * | 2016-07-28 | 2016-10-12 | 中航工业哈尔滨轴承有限公司 | High-speed tribology experimental apparatus |
| CN109187330A (en) * | 2018-08-09 | 2019-01-11 | 西安理工大学 | Friction coefficient measurement method under the conditions of a kind of variable working condition |
| CN112781968A (en) * | 2021-04-12 | 2021-05-11 | 西南交通大学 | Micro-motion abrasion test sample forming device among open-graded water distribution and stable gravel particles |
| US20220050045A1 (en) * | 2020-08-13 | 2022-02-17 | Qingdao university of technology | Device for measuring frictional force and film thickness of lubricating oil film in different surface velocity directions |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106018148A (en) * | 2016-07-28 | 2016-10-12 | 中航工业哈尔滨轴承有限公司 | High-speed tribology experimental apparatus |
| CN106018148B (en) * | 2016-07-28 | 2018-10-02 | 中航工业哈尔滨轴承有限公司 | A kind of high-speed friction tester |
| CN109187330A (en) * | 2018-08-09 | 2019-01-11 | 西安理工大学 | Friction coefficient measurement method under the conditions of a kind of variable working condition |
| US20220050045A1 (en) * | 2020-08-13 | 2022-02-17 | Qingdao university of technology | Device for measuring frictional force and film thickness of lubricating oil film in different surface velocity directions |
| US11768149B2 (en) * | 2020-08-13 | 2023-09-26 | Qingdao university of technology | Device for measuring frictional force and film thickness of lubricating oil film in different surface velocity directions |
| CN112781968A (en) * | 2021-04-12 | 2021-05-11 | 西南交通大学 | Micro-motion abrasion test sample forming device among open-graded water distribution and stable gravel particles |
| CN112781968B (en) * | 2021-04-12 | 2021-06-25 | 西南交通大学 | Micro-motion abrasion test sample forming device among open-graded water distribution and stable gravel particles |
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