CN102672209A - Cutter with function of decoupling temperature of turning area - Google Patents
Cutter with function of decoupling temperature of turning area Download PDFInfo
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- CN102672209A CN102672209A CN2012101477131A CN201210147713A CN102672209A CN 102672209 A CN102672209 A CN 102672209A CN 2012101477131 A CN2012101477131 A CN 2012101477131A CN 201210147713 A CN201210147713 A CN 201210147713A CN 102672209 A CN102672209 A CN 102672209A
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- blind hole
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Abstract
The invention discloses a cutter with a function of decoupling the temperature of a turning area. The cutter comprises a turning cutter bar and a blade arranged on the turning cutter bar, wherein two test micro blind holes are formed in the blade and used for accommodating high temperature fiber gratings; one blind hole is positioned under the front surface of the cutter; the other blind hole is positioned in the blade, and the bottom of the blind hole tightly leans against a cutter point; the axis of one blind hole is perpendicular to a cutting edge, the distance between the bottom of the blind hole and the cutting edge is 0.2 to 0.8mm, the distance between the blind hole and the front surface is 0.5 to 1.2mm, and the blind hole deviates from the cutter point by 1 to 1.5mm and is used for testing the temperature distribution of a cutter scrap contact surface; and the distance between the other blind hole and the external surface of the cutter point is 0.2 to 0.5mm, an included angle between the axis of the blind hole and the front surface is 20 to 30 degrees, and the blind hole points to the inside of the blade. The cutter can realize multi-point measurement in the turning micro area, is high in dynamic property, micro area test property, dynamic temperature display property and test accuracy, and can well decouple heat generated in a cutting micro area.
Description
Technical field
The invention belongs to precision processing technology, be specifically related to a kind of cutter with turning district temperature decoupling zero function, this cutter utilizes the high temperature fiber grating in the film micro area in turning district, to realize multi-point sampler.
Background technology
Have two main thermal source districts in the turning process, promptly first thermal source and second thermal source also are called shear band thermal source and cutter bits contact thermal source.Can know that according to theory analysis first thermal source is less to the influence of cutter rake face Temperature Distribution, and is bigger to the point of a knife position influence.The influence of second thermal source tool setting bits contact-making surface is bigger, and is less to other regional effects of cutter, therefore if can test accurately in real time first, second thermal source, has the bigger meaning that influences for design of cutter key parameter and machined parameters optimization so.Existing turning district temperature test method can reduce contact type measurement and non-contact measurement, comprises natural thermocouple method, artificial thermocouple, infra-red radiation method and CCD camera method etc.These methods respectively have pluses and minuses; Galvanic couple method test directly, simple, data are reliable but have the problem of arranging that the galvanic couple difficulty is high, measuring the dynamic response difference, infrared wait the non-contact testing method response time short, measurement category is big but it is higher to environmental requirement to exist, the measuring position is selected than deficiencies such as difficulty and precision are relatively poor.In addition, summarize above method of testing, the drawback of existence is that the cutting temperature of test is a mean temperature, can not carry out the decoupling zero test to turning district temperature.
Summary of the invention
The object of the present invention is to provide a kind of cutter with turning district temperature decoupling zero function, it can realize multimetering in the turning film micro area, and dynamic characteristic is good, can give birth to heat to the cutting microcell preferably and carry out decoupling zero.
A kind of cutter provided by the invention with turning district temperature decoupling zero function; Comprise the turning knife bar and be installed in the blade on the turning knife bar; It is characterized in that: two fine blind holes of test are arranged in blade, all be used to arrange the high temperature fiber grating, a blind hole is positioned under the cutter rake face; Another blind hole also is positioned at blade inside, and the blind hole bottom is near position of tool tip.
Improvement as technique scheme; The axis normal of a said blind hole is in cutting edge, and blind hole distance from bottom cutting edge 0.2 is to 0.8mm, and blind hole is 0.5 to 1.2mm apart from rake face; And deflect away from point of a knife 1 to 1.5mm position, be used to test the Temperature Distribution of cutter bits contact-making surface.
As the further improvement of technique scheme, to 0.5mm, blind hole axis and rake face angle are 20 to 30 ° to said another blind hole apart from point of a knife outer surface 0.2, and it is inner to point to blade, are used to test the Temperature Distribution in point of a knife zone.
Compared with prior art, the present invention has following technique effect:
(1) the present invention is based on the realization of high temperature fiber grating sensing technology.Because the high temperature fiber grating has smaller volume, and can in the 2mm sensitive zones, realize multimetering, just can uniquely test out the temperature distribution state in the cutting film micro area.
(2) because the detection information that the high temperature fiber-optic grating sensor is exported is the wavelength change amount that measures, so variations in temperature has certainly with reference to property; Since its with optical signal as propagation medium, so the antijamming capability of measuring is strong; In whole test tool, owing to adopt unique high temperature optical fiber grating sensing arrangement, can be easy to the temperature in the cutting microcell is carried out decoupling zero, this form structure is simple, operation and measurement result reliability are high; Owing to, different high temperature fiber grating arrangements is set, so the applicability of this cutter is strong for different blades information.
Description of drawings
Fig. 1 implements schematic diagram for the present invention.
Fig. 2 is little turning district temperature decoupling principle figure.
Fig. 3 arranges key diagram for the fine blind hole in turning district.
Among Fig. 1,2 and 3,1 expression lathe tool bar, the clamped cutting bit sheet is used in 2 expression turning, the fine blind hole on the 3 expression clamped cutting bit sheets, 4 expressions, the first high temperature fiber grating, 5 expression fiber Bragg grating (FBG) demodulators, 6 expressions, the second high temperature fiber grating.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1; Turning is installed with clamped cutting bit sheet 2 on the lathe tool bar 1; Turning is with having fine blind hole 3 on the clamped cutting bit sheet; First, second high temperature fiber grating 4,6 is tested first and second thermal source district Temperature Distribution situation respectively, and high temperature fiber grating 4 tests first thermal source is given birth to heat (shear band thermal source), high temperature fiber grating 6 tests second thermal source (cutter bits contact-making surface thermal source).Usually, the diameter of fine blind hole is less than 1mm, and the high temperature fiber grating is meant that the environment preference temperature is more than or equal to 700 ℃ fiber grating.
Fig. 2 is the temperature decoupling principle figure of turning of the present invention district temperature decoupling zero apparatus and method; Represented two-dimentional cutting in the figure; On second thermal source, arrange the high temperature fiber grating; The temperature of test is merely second thermal source and gives birth to heat, and the highest temperature spot is departing from position of tool tip, the zone that is positioned at the smear metal moulding and goes out from the rake face upper reaches.
Fig. 3 arranges key diagram for the fine blind hole in turning of the present invention district; In two fine blind holes, one is positioned under the cutter rake face, and the blind hole axis normal is in cutting edge; Blind hole distance from bottom cutting edge 0.2mm; Blind hole is 0.5mm apart from rake face, and deflects away from point of a knife 1mm position, is used to test the Temperature Distribution of cutter bits contact-making surface.Another also is positioned at blade inside, and the blind hole bottom is near position of tool tip, and apart from point of a knife outer surface 0.2mm, blind hole axis and rake face angle are 20 °, and it is inner to point to blade.
High temperature fiber grating has wherein been arranged the grid of 5 different wave lengths on the 2mm fiber lengths, that is to say the temperature independent test that in the 2mm fiber lengths, can realize 5 points.Before use, this fiber grating carries out temperature calibration in high-precision numerical control high temperature furnace, draw the variation relation of different probe temperatures and each point reflection at peak, and each group temperature value test 5 times, averages again.In the process that the present invention implements, the design of fine blind hole and processing are key points, according to the distribution characteristics in turning processing temperature zone; Being used to encapsulate the fine blind hole that the high temperature fiber grating is used for testing the rake face temperature need design under the cutter rake face; The blind hole axis normal is in cutting edge, and blind hole distance from bottom cutting edge 0.2mm, the parallel rake face of blind hole also deflect away from apart from being 0.5mm; And deflect away from point of a knife 1mm position; This is because the rake face of blade is not the plane of a completion, has different types of chip curling groove on the different blades rake face, in design process, will avoid the degree of depth of chip curling groove.Another fine blind hole is positioned at blade inside; The blind hole bottom is near position of tool tip, and apart from point of a knife outer surface 0.2mm, blind hole axis and rake face angle are 20 °; And it is inner to point to blade; The temperature of high temperature fiber grating test point of a knife point in test process is analyzed mirror image model through cut heat and is deduced and analyze, and can construct the temperature of shear band thermal source.In the processing of fine blind hole, select the lathe tool bar and the turning insert of coupling for use, test related data on three coordinate measuring machine constructs the space geometry parameter of blade, sets up mathematical model, and transfers to high-accuracy lathe and carry out processing and implementation.
Before the test; Fine blind hole will use alcohol to carry out cleaning repeatedly, guarantees that impurity such as chipless, greasy dirt is residual in the hole, utilizes special installation that high-temp glue is squeezed in the fine blind hole; And then with the fiber grating implantation wherein, guarantee that grating fully contacts with the high temperature colloid.The high-temp glue of selecting for use has heat-resisting quantity preferably, and fabulous thermal conductivity has stability preferably to variations in temperature colloid volume.In the process of encapsulation, should pay close attention to constantly, prevent that fiber grating is by mechanical damage.
During measurement, fiber Bragg grating (FBG) demodulator 5 can send laser, and laser is along transferring to corresponding optical fiber grating sensing zone along optical fiber 4 and 6 respectively.When laser arrives when being positioned at the grid of test section, because the temperature in the process raises, fiber grating is heated and the drift of wavelength takes place, according to formula λ
B=2 η Λ, with the light reflected back optical fiber grating demodulation appearance 5 of different wave length, fiber Bragg grating (FBG) demodulator 5 carries out demodulation after receiving reverberation, and with digital form output wave long value.
After the measurement; Digital information through fiber Bragg grating (FBG) demodulator 5 outputs is calculated the reverberation wavelength variable quantity in the grating section on optical fiber 4 and 6 respectively; Extrapolate the strain that two grating sections take place, calculate on two optical fiber the temperature value of different optical grating points on the corresponding grating section according to the fiber grating heat of demarcating in advance and the relation formula of strain again.
The above is preferred embodiment of the present invention, but the present invention should not be confined to the disclosed content of this embodiment and accompanying drawing.So everyly do not break away from the equivalence of accomplishing under the disclosed spirit of the present invention or revise, all fall into the scope of the present invention's protection.
Claims (3)
1. the cutter with turning district temperature decoupling zero function is characterized in that, two fine blind holes of test are arranged in blade; All be used to arrange the high temperature fiber grating; A blind hole is positioned under the cutter rake face, and another blind hole also is positioned at blade inside, and the blind hole bottom is near position of tool tip.
2. the cutter with turning district temperature decoupling zero function according to claim 1; It is characterized in that; The axis normal of a said blind hole is in cutting edge, and blind hole distance from bottom cutting edge 0.2 is to 0.8mm, and blind hole is 0.5 to 1.2mm apart from rake face; And deflect away from point of a knife 1 to 1.5mm position, be used to test the Temperature Distribution of cutter bits contact-making surface.
3. the cutter with turning district temperature decoupling zero function according to claim 1; It is characterized in that to 0.5mm, blind hole axis and rake face angle are 20 to 30 ° to said another blind hole apart from point of a knife outer surface 0.2; And it is inner to point to blade, is used to test the Temperature Distribution in point of a knife zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210147713.1A CN102672209B (en) | 2012-05-14 | 2012-05-14 | Cutter with function of decoupling temperature of turning area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210147713.1A CN102672209B (en) | 2012-05-14 | 2012-05-14 | Cutter with function of decoupling temperature of turning area |
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| CN102672209A true CN102672209A (en) | 2012-09-19 |
| CN102672209B CN102672209B (en) | 2014-03-26 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737436A (en) * | 2014-01-13 | 2014-04-23 | 南京工程学院 | Cutting temperature measurement system based on optical fiber sensing |
| CN106767965A (en) * | 2016-11-29 | 2017-05-31 | 华中科技大学 | A kind of multiple physical field measuring system based on fiber grating and infrared double-sensing technology |
| CN108907908A (en) * | 2018-06-25 | 2018-11-30 | 武汉理工大学 | A kind of carbon fibre composite ultrasonic vibration grinding temperature field monitors system and method |
| CN110716494A (en) * | 2019-11-13 | 2020-01-21 | 中国航发动力股份有限公司 | Tool parameter identification method and cycloid machining parameter optimization method based on tool parameters |
| CN112171378A (en) * | 2020-09-29 | 2021-01-05 | 华中科技大学 | Turning temperature measurement system based on microstructure optical fiber sensing |
| CN114689197A (en) * | 2022-05-31 | 2022-07-01 | 成都飞机工业（集团）有限责任公司 | A online temperature measuring device for metal surface function is rebuild |
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| DE102007011705A1 (en) * | 2007-03-08 | 2008-09-11 | Genesis Adaptive Systeme Deutschland Gmbh | Method and device for in-process tool monitoring |
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Patent Citations (6)
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| US5039193A (en) * | 1990-04-03 | 1991-08-13 | Focal Technologies Incorporated | Fibre optic single mode rotary joint |
| JP3213725B2 (en) * | 1999-07-16 | 2001-10-02 | 東京工業大学長 | Method and apparatus for detecting machining state of machine tool, and cutting tool used therefor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737436A (en) * | 2014-01-13 | 2014-04-23 | 南京工程学院 | Cutting temperature measurement system based on optical fiber sensing |
| CN106767965A (en) * | 2016-11-29 | 2017-05-31 | 华中科技大学 | A kind of multiple physical field measuring system based on fiber grating and infrared double-sensing technology |
| CN106767965B (en) * | 2016-11-29 | 2019-04-12 | 华中科技大学 | A kind of multiple physical field measuring system based on fiber grating and infrared double-sensing technology |
| CN108907908A (en) * | 2018-06-25 | 2018-11-30 | 武汉理工大学 | A kind of carbon fibre composite ultrasonic vibration grinding temperature field monitors system and method |
| CN110716494A (en) * | 2019-11-13 | 2020-01-21 | 中国航发动力股份有限公司 | Tool parameter identification method and cycloid machining parameter optimization method based on tool parameters |
| CN112171378A (en) * | 2020-09-29 | 2021-01-05 | 华中科技大学 | Turning temperature measurement system based on microstructure optical fiber sensing |
| CN112171378B (en) * | 2020-09-29 | 2022-01-11 | 华中科技大学 | Turning temperature measurement system based on microstructure optical fiber sensing |
| CN114689197A (en) * | 2022-05-31 | 2022-07-01 | 成都飞机工业（集团）有限责任公司 | A online temperature measuring device for metal surface function is rebuild |
| CN114689197B (en) * | 2022-05-31 | 2022-10-25 | 成都飞机工业（集团）有限责任公司 | A online temperature measuring device for metal surface function is reproduced |
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| CN102672209B (en) | 2014-03-26 |
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