CN103616394A - Method for confirming grinding crystal orientation of diamond - Google Patents
Method for confirming grinding crystal orientation of diamond Download PDFInfo
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- CN103616394A CN103616394A CN201310672397.4A CN201310672397A CN103616394A CN 103616394 A CN103616394 A CN 103616394A CN 201310672397 A CN201310672397 A CN 201310672397A CN 103616394 A CN103616394 A CN 103616394A
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Abstract
The invention relates to a method for conforming grinding crystal orientation of a diamond, belonging to the technical field of ultra-precise machining. The method comprises the steps of (1) grinding a single crystal diamond so as to obtain an abrasive surface, wherein the abrasive surface and a crystal face to be ground intersect so as to form a ridge; (2) measuring the index of the crystal surface of the obtained abrasive surface; (3) measuring the index of the crystal surface of the surface to be ground; (4) measuring the included angle between a groove left in the surface to be processed due to processing and the ridge formed in step (1); (5) calculating according to the data measured from step (2) to step (4) so as to obtain the specific crystal orientation index or direction in the grinding direction. According to the method, the abrasive surface provided in advance and the surface to be ground form the ridge which is taken as the reference crystal orientation, in subsequent abrasive machining, characterization parameters of the specific grinding direction can be measured by a laser scanning confocal microscope only by marking initial crystal orientation on the crystal surface, and the space placing position and placing gesture of the diamond workpiece do not need to be recorded, so that the method is convenient and rapid.
Description
Technical field
The invention belongs to ultraprecise Machining Technology field, relate to the method in a kind of definite diamond lap crystal orientation.
Background technology
Adamas is with its unique physical and mechanical properties, and especially its high hardness, has in industry manufacture and scientific and technical research field the application that is difficult to substitute.The U.S., eighties of last century end of the fifties, has developed SPDT(Single Point Diamond Turning for adapting to the demand for development of ultra precision cutting technology) technology.In this technology, adamas is as cutting tool manufactured materials, and this also makes diamond cutter manufacturing technology become the gordian technique in ultraprecise field of machining.
Adamas itself has strong anisotropy.Most typical in the present rubbing characteristics of this property list is exactly that the material removal efficiency in the different crystal face crystal orientation of adamas presents significant difference under same mechanical lapping condition.In reality, when to adamantine some crystal face attrition process, in order to raise the efficiency, adjustment that always will be gradually, finds the grinding direction that material removing rate is high, and concrete sign is ground the parameter values of direction and is difficult to obtain.Yet the anisotropic feature of adamantine this material removal efficiency, also for we provide a kind of method of controlling diamond lap efficiency, grinds direction by control and reaches the object of controlling grinding efficiency.This just requires to determine the corresponding relation between wearing and tearing efficiency and concrete grinding direction.
Summary of the invention
For the problem of prior art existence, the invention provides a kind of method of definite diamond lap direction.
As shown in Fig. 1, the method for definite diamond lap direction provided by the invention, comprises the steps:
(1) grind single-crystal diamond crystal and obtain an abrasive surface, require this abrasive surface to intersect with needing the crystal face of attrition process, form a rib;
(2) indices of crystal plane of gained abrasive surface in determination step (1);
(3) measure the indices of crystal plane that need attrition process surface;
(4) angle between the rib in the groove staying because of processing on the surface that mensuration needs to process (direction of groove is consistent with grinding direction) and step (1);
(5) according to step (2) to step (4) the data of surveying just can obtain grinding as calculated concrete indices of crystal direction or the direction of direction.
In said method, in described step (5), the calculating grinding indices of crystal direction of direction or the method for direction are as follows:
If the indices of crystal plane that step (2) records gained abrasive surface in step (1) for (
h 1,
k 1,
l 1), step (3) record need the indices of crystal plane on attrition process surface for (
h 2,
k 2,
l 2), the angle recording in step (4) is
θ, the direction vector that grinds crystal orientation be (
a,
b,
c), so by vector (
h 1,
k 1,
l 1) and (
h 2,
k 2,
l 2) cross product can obtain along the vector of the rib in step (1) for (
k 1 l 2-
l 1 k 2,
l 1 h 2-
h 1 l 2,
h 1 k 2-
k 1 h 2), foundation vector (
a,
b,
c) and vector (
h 2,
k 2,
l 2) dot product be 0 and vector (
a,
b,
c) and vector (
k 1 l 2-
l 1 k 2,
l 1 h 2-
h 1 l 2,
h 1 k 2-
k 1 h 2) angle be
θobtain formula (1):
Bring step (2)-(4) data measured into, by above system of equations, just can be tried to achieve
a,
bwith
cratio, thereby obtain grinding concrete indices of crystal direction or the direction of direction.
In said method, in described step (2) and (3), for measuring the equipment of the indices of crystal plane on diamond lap surface, be X ray crystal direction finder.
In said method, the method of measuring angle in described step (4) is: the image of the angle between the rib in the groove staying first obtain attrition process under laser confocal microscope after and step (1) then measures the angle of angle in this image.
The present invention is by providing in advance an abrasive surface and needing a rib of attrition process surface formation as the way with reference to crystal orientation, only need to do initial demarcation to crystal face crystal orientation, just can in follow-up attrition process, adopt laser confocal microscope to measure the characterization parameter of concrete grinding direction, do not need to record locus and the attitude that adamas workpiece is placed, convenient and swift.
Accompanying drawing explanation
Fig. 1 is for determining the method flow diagram of diamond lap direction;
Fig. 2 is adamas test specimen schematic diagram;
The angle figure at diamond lap lip-deep groove and seamed edge of Fig. 3 for being taken by Laser Scanning Confocal Microscope;
In figure, 1 for crystal orientation is the surface of (001), and 2 is to need processing
the surface in crystal orientation (signal), 3 is octahedral adamas, 4 is adamas workpiece to be processed, 5 is the crossing ribs of two crystal faces, 6 intersect the angle between the rib forming for grinding the groove and two crystal faces that stay from the teeth outwards afterwards, 7 is the linear marking direction along the proper alignment of groove formation, and 8 is that the needs of taking under laser confocal microscope are processed
the surface in crystal orientation.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described; but be not limited to this; every technical solution of the present invention is modified or is equal to replacement, and not departing from the spirit and scope of technical solution of the present invention, all should be encompassed in protection scope of the present invention.
The surface that needs attrition process in this embodiment is single-crystal diamond crystal
crystal face.Adopt traditional diamond lap method first to grind out the surface 1 that a crystal orientation is (001), this surface and needs are processed
intersect on the surface 2 in crystal orientation, obtains the crossing rib of two crystal faces 5, and the crystal orientation of this rib is [110].Adamas test specimen sketch as shown in Figure 2.In order to make this two crystal faces that surperficial crystal orientation is near the mark, adopt X ray crystal direction finder (the Multiwire Laboratories Ltd. of model MWL110， producer) that the crystal orientation of lapped face is calibrated and measured.Edge needs attrition process
the surface grinding in crystal orientation, at laser confocal microscope (model LEXT OLS3000, the Olympus Corporation of producer) the lower angle 6 of observing and measures the rib of the groove that stays from the teeth outwards after grinding and the crossing formation of two crystal faces, the linear marking direction 7 of the proper alignment forming along groove is actual grinding direction, and from figure, recording this angle is α=60 °.Actual grinding direction is positioned at again needs processing
on the surface in crystal orientation, the vector represented with the indices of crystal direction of crystal face is vertical, establish grind crystal orientation, direction place for (
a b c), so there is formula (2) to set up:
（2）。
So can grind direction vector in direction for (1,1 ,-
), turn to the indices of crystal direction that minimum ratio of integers can obtain this direction and be approximately (2,000 2000
).
Claims (4)
1. the method in definite diamond lap crystal orientation, is characterized in that described method step is as follows:
(1) grind single-crystal diamond crystal and obtain an abrasive surface, require this abrasive surface to intersect with needing the crystal face of attrition process, form a rib;
(2) indices of crystal plane of gained abrasive surface in determination step (1);
(3) measure the indices of crystal plane that need attrition process surface;
(4) groove staying because of processing on the surface that mensuration needs to process and the angle between the rib in step (1), the direction of described groove is consistent with grinding direction;
(5) according to step (2) to step (4) data of surveying, calculate concrete indices of crystal direction or the direction of grinding direction.
2. the method in a kind of definite diamond lap according to claim 1 crystal orientation, it is characterized in that calculating in described step (5) grind the indices of crystal direction of direction or the method for direction as follows:
If the indices of crystal plane that step (2) records gained abrasive surface in step (1) for (
h 1,
k 1,
l 1), step (3) record need the indices of crystal plane on attrition process surface for (
h 2,
k 2,
l 2), the angle recording in step (4) is
θ, the direction vector that grinds crystal orientation be (
a,
b,
c), so by vector (
h 1,
k 1,
l 1) and (
h 2,
k 2,
l 2) cross product can obtain along the vector of the rib in step (1) for (
k 1 l 2-
l 1 k 2,
l 1 h 2-
h 1 l 2,
h 1 k 2-
k 1 h 2), foundation vector (
a, b,
c) and vector (
h 2,
k 2,
l 2) dot product be 0 and vector (
a,
b,
c) and vector (
k 1 l 2-
l 1 k 2,
l 1 h 2-
h 1 l 2,
h 1 k 2-
k 1 h 2) angle be
θobtain following system of equations:
?；
Bring step (2)-(4) data measured into, by above system of equations, tried to achieve
a,
bwith
cratio, thereby obtain grinding concrete indices of crystal direction or the direction of direction.
3. the method in a kind of definite diamond lap according to claim 1 crystal orientation, is characterized in that in described step (2) and (3) being X ray crystal direction finder for measuring the equipment of the indices of crystal plane on diamond lap surface.
4. the method in a kind of definite diamond lap according to claim 1 crystal orientation, it is characterized in that the method for measuring angle in described step (4) is: the image of the angle between the rib in the groove staying first obtain attrition process under laser confocal microscope after and step (1) then measures the angle of angle in this image.
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|---|---|---|---|
| CN201310672397.4A CN103616394B (en) | 2013-12-12 | 2013-12-12 | A kind of method determining diamond lap crystal orientation |
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| CN103616394B CN103616394B (en) | 2015-12-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551974A (en) * | 2015-01-14 | 2015-04-29 | 浙江凯吉机械设备制造有限公司 | Diamond grinding and polishing method |
| CN106142367A (en) * | 2016-06-30 | 2016-11-23 | 长春理工大学 | A kind of determination method of the fly-cutting monocrystalline germanium hexahedro initial side surface of rotary drum first of two dimension |
| CN108801898A (en) * | 2018-06-15 | 2018-11-13 | 天津大学 | A kind of experimental exploring method for the optimal processing crystal orientation of anisotropic material |
| CN110442987A (en) * | 2019-08-10 | 2019-11-12 | 哈尔滨工业大学 | A kind of single-crystal diamond circular cone pressure head axis direction and grinding angle selection method |
| CN112025530A (en) * | 2020-11-06 | 2020-12-04 | 苏州香榭轩表面工程技术咨询有限公司 | Nano-diamond cutter and preparation method and application thereof |
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| US3190044A (en) * | 1954-09-04 | 1965-06-22 | Villalobos Hum Fernandez-Moran | Apparatus for grinding diamond knives |
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| CN101776619A (en) * | 2009-12-15 | 2010-07-14 | 丹东奥龙射线仪器有限公司 | X-ray crystal orientation device |
| CN103234991A (en) * | 2013-04-01 | 2013-08-07 | 合肥晶桥光电材料有限公司 | Measurement method for crystal material crystal direction |
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2013
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Patent Citations (4)
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| US3190044A (en) * | 1954-09-04 | 1965-06-22 | Villalobos Hum Fernandez-Moran | Apparatus for grinding diamond knives |
| CN101776619A (en) * | 2009-12-15 | 2010-07-14 | 丹东奥龙射线仪器有限公司 | X-ray crystal orientation device |
| CN101733848A (en) * | 2009-12-29 | 2010-06-16 | 西北工业大学 | Convenient method for directionally cutting any crystal face of crystal |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551974A (en) * | 2015-01-14 | 2015-04-29 | 浙江凯吉机械设备制造有限公司 | Diamond grinding and polishing method |
| CN106142367A (en) * | 2016-06-30 | 2016-11-23 | 长春理工大学 | A kind of determination method of the fly-cutting monocrystalline germanium hexahedro initial side surface of rotary drum first of two dimension |
| CN106142367B (en) * | 2016-06-30 | 2017-12-05 | 长春理工大学 | A kind of determination method of two-dimentional six the first initial side surfaces of face rotary drum of fly-cutting monocrystalline germanium |
| CN108801898A (en) * | 2018-06-15 | 2018-11-13 | 天津大学 | A kind of experimental exploring method for the optimal processing crystal orientation of anisotropic material |
| CN110442987A (en) * | 2019-08-10 | 2019-11-12 | 哈尔滨工业大学 | A kind of single-crystal diamond circular cone pressure head axis direction and grinding angle selection method |
| CN110442987B (en) * | 2019-08-10 | 2022-05-10 | 哈尔滨工业大学 | Method for selecting axis direction and grinding angle of conical pressure head of single crystal diamond |
| CN112025530A (en) * | 2020-11-06 | 2020-12-04 | 苏州香榭轩表面工程技术咨询有限公司 | Nano-diamond cutter and preparation method and application thereof |
| CN112025530B (en) * | 2020-11-06 | 2021-03-23 | 上海征世科技有限公司 | Nano-diamond cutter and preparation method and application thereof |
| WO2022095748A1 (en) * | 2020-11-06 | 2022-05-12 | 上海征世科技股份有限公司 | Nano-diamond cutter, preparation method therefor and application thereof |
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|---|---|
| CN103616394B (en) | 2015-12-02 |
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