CN103616394B - A kind of method determining diamond lap crystal orientation - Google Patents
A kind of method determining diamond lap crystal orientation Download PDFInfo
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- CN103616394B CN103616394B CN201310672397.4A CN201310672397A CN103616394B CN 103616394 B CN103616394 B CN 103616394B CN 201310672397 A CN201310672397 A CN 201310672397A CN 103616394 B CN103616394 B CN 103616394B
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Abstract
Determine the method in diamond lap crystal orientation, belong to ultraprecise Machining Technology field.Described method: (1) grinding single-crystal diamond crystals obtains an abrasive surface, formation crossing with needing the crystal face of attrition process rib; (2) indices of crystal plane of gained abrasive surface are measured; (3) indices of crystal plane needing attrition process surface are measured; (4) measure on the surface needing processing because processing the angle between the rib in the groove that stays and step (1); (5) survey data according to step (2) to step (4) institute to calculate and grind the concrete indices of crystal direction in direction or direction.The present invention is by providing an abrasive surface and the rib needing attrition process surface to be formed as the way with reference to crystal orientation in advance, only need to do initial demarcation to crystal face crystal orientation, laser confocal microscope just can be adopted in follow-up attrition process to measure the characterization parameter in concrete grinding direction, do not need the locus and the attitude that record the placement of adamas workpiece, convenient and swift.
Description
Technical field
The invention belongs to ultraprecise Machining Technology field, relate to a kind of method determining diamond lap crystal orientation.
Background technology
Adamas is with the physical and mechanical properties of its uniqueness, and especially its high hardness, has in industry manufacture and scientific and technical research field the application being difficult to substitute.The U.S. eighties of last century end of the fifties, for the demand for development adapting to ultra precision cutting technology develops SPDT(SinglePointDiamondTurning) technology.In this technology, adamas is as cutting tool manufactured materials, and this also makes diamond cutter manufacturing technology become 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, always will adjustment gradually, the grinding direction finding material removing rate high, and the parameter values in concrete sign grinding direction is difficult to obtain.But the anisotropic feature of adamantine this material removal efficiency, also for we providing a kind of method controlling diamond lap efficiency, namely reaches by controlling grinding direction the object controlling grinding efficiency.This just requires the corresponding relation determining to wear and tear between efficiency and concrete grinding direction.
Summary of the invention
For prior art Problems existing, the invention provides a kind of method determining diamond lap direction.
As shown in Figure 1, the method determining diamond lap direction provided by the invention, comprises the steps:
(1) grind single-crystal diamond crystals and obtain an abrasive surface, requiring that this abrasive surface is crossing with needing the crystal face of attrition process, forming a rib;
(2) indices of crystal plane of the middle gained abrasive surface of determination step (1);
(3) indices of crystal plane needing attrition process surface are measured;
(4) measure and need on the surface of processing because processing the angle between the rib in the groove (direction of groove is consistent with grinding direction) and step (1) that stay;
(5) survey data according to step (2) to step (4) institute and just can obtain the grinding concrete indices of crystal direction in direction or direction as calculated.
In said method, the method calculating indices of crystal direction or the direction of grinding direction in described step (5) is 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 recorded in step (4) is
θ, grinding crystal orientation direction vector 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 rib in step (1) vector 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):
（1）；
Bring step (2)-(4) data measured into, just can be tried to achieve by above system of equations
a,
bwith
cratio, thus obtain grinding the concrete indices of crystal direction in direction or direction.
In said method, be X-ray crystal orientation device for measuring the equipment of the indices of crystal plane on diamond lap surface in described step (2) and (3).
In said method, the method measuring angle in described step (4) is: the image of the angle between the groove stayed first obtain attrition process under laser confocal microscope after with the rib in step (1), and then measurement obtains the angle of angle in the images.
The present invention is by providing an abrasive surface and the rib needing attrition process surface to be formed as the way with reference to crystal orientation in advance, only need to do initial demarcation to crystal face crystal orientation, laser confocal microscope just can be adopted in follow-up attrition process to measure the characterization parameter in concrete grinding direction, do not need the locus and the attitude that record the placement of adamas workpiece, convenient and swift.
Accompanying drawing explanation
Fig. 1 is the method flow diagram determining diamond lap direction;
Fig. 2 is adamas test specimen schematic diagram;
Fig. 3 is the angle figure of the groove on diamond lap surface and the seamed edge taken by Laser Scanning Confocal Microscope;
In figure 1 for crystal orientation be the surface of (001), 2 for needing processing
the surface (signal) in crystal orientation, 3 is octahedral adamas, 4 is adamas workpiece to be processed, 5 is the rib that two crystal faces intersect, 6 is the angle after grinding between the groove that stays from the teeth outwards and the rib of the crossing formation of two crystal faces, 7 is the linear marking direction of proper alignment formed along groove, and 8 be that the needs taken 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 thereto; everyly technical solution of the present invention modified or equivalent to replace, 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 of attrition process is needed to be single-crystal diamond crystals in this embodiment
crystal face.Adopt traditional diamond lap method first to grind out surface 1 that a crystal orientation is (001), makes this surface and needs to process
the surface 2 in crystal orientation is intersected, and obtain the rib 5 that two crystal faces intersect, the crystal orientation of this rib is [110].Adamas test specimen sketch as shown in Figure 2.In order to the crystal face making these two surperficial crystal orientation be near the mark, X-ray crystal orientation device (model MWL110, producer MultiwireLaboratoriesLtd.) is adopted to calibrate the crystal orientation of lapped face and measure.Edge needs attrition process
the surface grinding in crystal orientation, at laser confocal microscope (model LEXTOLS3000, producer OlympusCorporation) under observe and the angle 6 of the groove that stays from the teeth outwards and the rib of the crossing formation of two crystal faces after measuring grinding, linear marking direction 7 along the proper alignment of groove formation is actual grinding direction, and from figure, record this angle is α=60 °.Actual grinding direction is positioned at again needs processing
on the surface in crystal orientation, with the vector normal represented by the indices of crystal direction of crystal face, if grinding crystal orientation, place, direction be (
abc), so there is formula (2) to set up:
（2）。
So can grind direction vector on direction for (1,1 ,-
), turn to the indices of crystal direction that minimum ratio of integers can obtain this direction and be approximately (20002000
).
Claims (3)
1. determine the method in diamond lap crystal orientation, it is characterized in that described method step is as follows:
(1) grind single-crystal diamond crystals and obtain an abrasive surface, requiring that this abrasive surface is crossing with needing the crystal face of attrition process, forming a rib;
(2) indices of crystal plane of the middle gained abrasive surface of determination step (1);
(3) indices of crystal plane needing attrition process surface are measured;
(4) measure because processing the angle between the groove that stays with the rib in step (1) on the surface needing processing, the direction of described groove is consistent with grinding direction;
(5) survey data according to step (2) to step (4) institute to calculate and grind the concrete indices of crystal direction in direction or direction, circular is as follows:
If step (2) records the indices of crystal plane of gained abrasive surface in step (1) for (h
1, k
1, l
1), step (3) records needs the indices of crystal plane on attrition process surface for (h
2, k
2, l
2), the angle recorded in step (4) is θ, and the direction vector in grinding crystal orientation is (a, b, c), so by vector (h
1, k
1, l
1) and (h
2, k
2, l
2) the cross product vector that can obtain along the rib in step (1) be (k
1l
2-l
1k
2, l
1h
2-h
1l
2, h
1k
2-k
1h
2), according to vector (a, b, c) and vector (h
2, k
2, l
2) dot product be 0 and vector (a, b, c) with vector (k
1l
2-l
1k
2, l
1h
2-h
1l
2, h
1k
2-k
1h
2) angle be that θ obtains following system of equations:
Bring step (2)-(4) data measured into, try to achieve a, the ratio of b and c by above system of equations, thus obtain concrete indices of crystal direction or the direction of grinding direction, L represents described vector (k
1l
2-l
1k
2, l
1h
2-h
1l
2, h
1k
2-k
1h
2) length.
2. a kind of method determining diamond lap crystal orientation according to claim 1, to is characterized in that in described step (2) and (3) for measuring the equipment of the indices of crystal plane on diamond lap surface being X-ray crystal orientation device.
3. a kind of method determining diamond lap crystal orientation according to claim 1, it is characterized in that the method measuring angle in described step (4) is: the image of the angle between the groove stayed first obtain attrition process under laser confocal microscope after with the rib in step (1), then measurement obtains the angle of angle in the images.
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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 true CN103616394B (en) | 2015-12-02 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551974B (en) * | 2015-01-14 | 2017-02-22 | 浙江凯吉机械设备制造有限公司 | Diamond grinding and polishing method |
| 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 |
| 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 |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3190044A (en) * | 1954-09-04 | 1965-06-22 | Villalobos Hum Fernandez-Moran | Apparatus for grinding diamond knives |
| CN101733848A (en) * | 2009-12-29 | 2010-06-16 | 西北工业大学 | Convenient method for directionally cutting any crystal face of crystal |
| 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 |
-
2013
- 2013-12-12 CN CN201310672397.4A patent/CN103616394B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 材料各向异性对KDP晶体加工表面质量影响研究;高岩;《中国优秀硕士学位论文全文数据库》;20111215;全文 * |
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