CN103921167B - A kind of diamond sharp knife presetting cutter method - Google Patents
A kind of diamond sharp knife presetting cutter method Download PDFInfo
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- CN103921167B CN103921167B CN201410115479.3A CN201410115479A CN103921167B CN 103921167 B CN103921167 B CN 103921167B CN 201410115479 A CN201410115479 A CN 201410115479A CN 103921167 B CN103921167 B CN 103921167B
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- cutter
- sharp knife
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- diamond
- shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Sensing Apparatuses (AREA)
- Automatic Control Of Machine Tools (AREA)
Abstract
The invention provides a kind of diamond sharp knife presetting cutter method, described method combines with Test-cut met by LVDT, it is to avoid traditional trial-mix strength method is crossed and cut or cutter is higher than the alignment of shafts damage to cutter.Numerical value ψ is set by processor1、ψ2Two circles, measure its diameters respectively Ф1、Ф2, set up equation group, solving equation group according to geometrical relationship geometrical relationship, cutter adjustment numerical value in the Y direction can be obtained.Diameter is set as ψ again at workpiece end face processor3Circle, measure circular diameter exact value by measuring microscope, if respectively Ф3, then cutter in X-axis rise integer value is: (ψ3-Ф3)/2 or (Ф3-ψ3)/2.What achieve diamond sharp knife is accurate to cutter.
Description
Technical field
The invention belongs to ultraprecision diamond turning manufacture field, be specifically related to a kind of diamond sharp knife presetting cutter method.
Background technology
In modern scientific research produces, the processing of various fine structures generally requires use diamond sharp knife.On super precision lathe, cutter alignment error on height (Y) and level (Z) direction can affect the surface figure accuracy of workpiece.In height (Y) direction, position of tool tip and lathe spindle center, not when same level, can cause turning incomplete, small column or circular cone under workpiece end face remains respectively；In level (Z) direction, position of tool tip error can affect processing work contour shape.Generally, fix a cutting tool to cutter two kinds of methods of employing at lathe: (1) Test-cut met, (2) adopt high-resolution linear adjustable differential pick-up (LinerVariableDifferentialTransformer, LVDT) as tool position detector.But, diamond sharp knife is very sharp-pointed due to sharpening, and its tool strength is relatively low, and when machining, cutter cuts through the alignment of shafts in short transverse in the horizontal direction higher than center or cutter and is all likely to result in the damage of diamond sharp knife；According to LVDT to cutter, tool position error is difficult to adjust in 50 μm, thus fine structure scale error can be caused.
Summary of the invention
It is an object of the invention to provide a kind of presetting cutter method obtaining diamond sharp knife position.
The diamond sharp knife presetting cutter method of the present invention, in turn includes the following steps:
A., diamond cutter is installed on lathe, determines tool position by linear adjustable differential pick-up, in the Y direction, tool nose is arranged on slightly below alignment of shafts position；
B. trial cut is processed exemplar clamping at lathe spindle；
C. process, at workpiece end face, two circles that diameter is different by diamond sharp knife, if program sets machined circular diameter numerical value respectively ψ1、ψ2, and ψ1>ψ2；
D. circle diameter exact value is measured by measuring microscope, if respectively Ф1、Ф2, and Ф1>Ф2；
E. then solving equations:
(1)
(2)
Draw the numerical value of y, then can determine that cutter is y lower than alignment of shafts distance；
F. cutter is adjusted upward on the y axis distance for y, by position sensor, the distance that detection cutter adjusts in y direction；
G. step b～f is repeated for several times, until y value reaches y direction position adjustment precision；
H. diameter is set as ψ at workpiece end face processor again3Circle；
I. measure circular diameter exact value by measuring microscope, be set to Ф3；
J. ψ is compared3And Ф3Size, if ψ3>Ф3, illustrate in X-direction, cutter zero point relatively and in lathe spindle zero point in X-axis negative direction, is then moved (ψ to X-axis positive direction by cutter dead-center position3-Ф3)/2；Otherwise, cutter zero point relatively and in lathe spindle zero point in X-axis positive direction, is then moved (Ф to X-axis negative direction by cutter dead-center position3-ψ3)/2；
K. step h～j is repeated for several times, until (Ф3-ψ3)/2 or (ψ3-Ф3)/2 value reaches x direction position adjustment precision.
Processing two bowlders that diameter is different described in described step c, cutter can not cut through the alignment of shafts.
Processing the bowlder that diameter is different described in described step h, cutter does not cut through the alignment of shafts.
Trial cut processing sample material in described step b is aluminum or copper.
Described step g in y direction position adjustment precision less than 10 μm.
Described step k in x direction position adjustment precision less than 10 μm.
The diamond sharp knife presetting cutter method of the present invention, its advantage is: combined with Test-cut met by LVDT, it is ensured that trial cut add man-hour cutter in y direction lower than the alignment of shafts；And trial cut adds man-hour, only cut in x direction, by measuring and relevant geometrical relationship calculates the cutter adjustment numerical value in x, y direction.Compared with traditional Test-cut met, higher than the alignment of shafts because of cutter or will not excessively cut and cutter is caused damage；With LVDT to compared with the skill in using a kitchen knife in cookery, can accurately obtain tool position.The principle of the invention is simple, understandable, and it is convenient to implement, and easily operates.
Accompanying drawing explanation
Fig. 1 be the center cutter of the present invention when cutting through the alignment of shafts to cutter schematic diagram；
Fig. 2 be the center cutter of the present invention when not cutting through the alignment of shafts to cutter schematic diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1
Fig. 1 be the center cutter of the present invention when cutting through the alignment of shafts to cutter schematic diagram；
Fig. 2 be the center cutter of the present invention when not cutting through the alignment of shafts to cutter schematic diagram.
From Fig. 1,2 it can be seen that on diamond lathe, diamond sharp knife is contained on knife rest by LVDT tool setting gauge, make center cutter lower than the alignment of shafts, then there are two kinds of situations, (1) center cutter crosses the alignment of shafts, and namely center cutter is in X-axis negative direction；(2) center cutter did not have the alignment of shafts, and namely center cutter is in X-axis positive direction.Workpiece being carried out trial cut processing, processes two circles respectively, guarantee that cutter does not cut through the alignment of shafts in the course of processing, namely cutter is always positioned at X-axis positive direction.By being measured microscopically circle diameter exact value, if respectively Ф1、Ф2, and Ф1>Ф2.Then can set up equation:
(1)
(2)
Draw the numerical value of y, then can determine that cutter is y lower than alignment of shafts distance.Cutter is adjusted upward on the y axis distance for y, by position sensor, the distance that detection cutter adjusts in y direction, and adjust.Diameter is set as ψ again at workpiece end face processor3Circle.Circular diameter exact value is measured by measuring microscope, if respectively Ф3.Relatively ψ3And Ф3Size, if ψ3>Ф3, illustrate in X-direction, cutter zero point relatively and in lathe spindle zero point in X-axis negative direction, is then moved (ψ to X-axis positive direction by cutter dead-center position (position of tool tip)3-Ф3)/2；Otherwise, cutter zero point relatively and in lathe spindle zero point in X-axis positive direction, is then moved (Ф to X-axis negative direction by cutter dead-center position (position of tool tip)3-ψ3)/2.
The diamond sharp knife presetting cutter method of the present invention, in turn includes the following steps:
Step 1. installs diamond sharp knife on lathe, tool geometrical parameter: tool cutting edge angle Kr=93o, and secondary tool cutting edge angle Kr '=5o. primarily determines that tool position by LVDT, in the Y direction, is arranged on tool nose slightly below alignment of shafts position；
Trial cut is processed duralumin exemplar clamping at lathe spindle by step 2.；
Step 3. processes, at workpiece end face, two circles that diameter is different by diamond sharp knife, if setting machined circular diameter numerical value respectively ψ in program1=1.7369、ψ2=1.4077；
Step 4. measures circle diameter exact value by measuring microscope, if respectively Ф1=1.2718、Ф2=0.9694；
Step 5. is solving equations then:
(1)
(2)
Draw the numerical value of y=0.2189, then can determine that cutter is 0.2189 lower than alignment of shafts distance；
It is 0.2189 that cutter is adjusted upward distance by step 6. on the y axis, by position sensor, the distance that detection cutter adjusts in y direction；
Step 7. repeats step 2～6 for several times, until it is 8 μm that position, y direction reaches setting accuracy；
Step 8. sets diameter as ψ at workpiece end face processor again3The circle of=1.8146；
Step 9. measures circular diameter exact value by measuring microscope, is set to Ф3=1.2718；
Step 10. compares ψ3And Ф3Size, ψ3>Ф3, illustrate in X-direction, cutter zero point relatively and in lathe spindle zero point in X-axis negative direction, is then moved (ψ to X-axis positive direction by cutter dead-center position (position of tool tip)3-Ф3)/2=0.2714；
Step 11. repeats step 8～10 for several times, until it is 6 μm that position, x direction reaches setting accuracy.
Claims (6)
1. a diamond sharp knife presetting cutter method, it is characterised in that described method in turn includes the following steps:
A., diamond cutter is installed on lathe, determines tool position by linear adjustable differential pick-up, in the Y direction, tool nose is arranged on slightly below alignment of shafts position；
B. trial cut is processed exemplar clamping at lathe spindle；
C. process, at workpiece end face, two circles that diameter is different by diamond sharp knife, if program sets machined circular diameter numerical value respectively ψ1、ψ2, and ψ1>ψ2；
D. circle diameter exact value is measured by measuring microscope, if respectively Ф1、Ф2, and Ф1>Ф2；
E. then solving equations:
(1)
(2)
Draw the numerical value of y, then can determine that cutter is y lower than alignment of shafts distance；
F. cutter is adjusted upward on the y axis distance for y, by position sensor, the distance that detection cutter adjusts in y direction；
G. step b～f is repeated for several times, until y value reaches y direction position adjustment precision；
H. diameter is set as ψ at workpiece end face processor again3Circle；
I. measure circular diameter exact value by measuring microscope, be set to Ф3；
J. ψ is compared3And Ф3Size, if ψ3>Ф3, represent that, in X-direction, cutter zero point relatively and in lathe spindle zero point in X-axis negative direction, is then moved (ψ to X-axis positive direction by cutter dead-center position3-Ф3)/2；Otherwise, cutter zero point relatively and in lathe spindle zero point in X-axis positive direction, is then moved (Ф to X-axis negative direction by cutter dead-center position3-ψ3)/2；
K. step h～j is repeated for several times, until (Ф3-ψ3)/2 or (ψ3-Ф3)/2 value reaches x direction position adjustment precision.
2. a kind of diamond sharp knife presetting cutter method according to claim 1, it is characterised in that: processing two bowlders that diameter is different described in described step c, cutter can not cut through the alignment of shafts.
3. a kind of diamond sharp knife presetting cutter method according to claim 1, it is characterised in that: processing the bowlder that diameter is different described in described step h, cutter does not cut through the alignment of shafts.
4. a kind of diamond sharp knife presetting cutter method according to claim 1, it is characterised in that: the trial cut processing sample material in described step b is aluminum or copper.
5. a kind of diamond sharp knife presetting cutter method according to claim 1, it is characterised in that: described step g in y direction position adjustment precision less than 10 μm.
6. a kind of diamond sharp knife presetting cutter method according to claim 1, it is characterised in that: described step k in x direction position adjustment precision less than 10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115479.3A CN103921167B (en) | 2014-03-26 | 2014-03-26 | A kind of diamond sharp knife presetting cutter method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115479.3A CN103921167B (en) | 2014-03-26 | 2014-03-26 | A kind of diamond sharp knife presetting cutter method |
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| Publication Number | Publication Date |
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| CN103921167A CN103921167A (en) | 2014-07-16 |
| CN103921167B true CN103921167B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410115479.3A Expired - Fee Related CN103921167B (en) | 2014-03-26 | 2014-03-26 | A kind of diamond sharp knife presetting cutter method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877652A (en) * | 2019-04-08 | 2019-06-14 | 中国工程物理研究院激光聚变研究中心 | A kind of external mechanical-assisted tool setting device based on micro-vision |
| CN114227339B (en) * | 2021-12-10 | 2023-03-14 | 南昌大学 | Ultra-precision turning precise tool setting method based on trial-cut circular groove |
| CN114536098B (en) * | 2022-01-24 | 2023-05-02 | 南昌大学 | Ultra-precise milling precision tool setting method based on trial cutting linear groove |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5633247A (en) * | 1979-08-21 | 1981-04-03 | Osaka Kiko Co Ltd | Automatic centering correction method for machine tool |
| JPS6151203A (en) * | 1984-08-18 | 1986-03-13 | Fanuc Ltd | Numerical control system |
| CN86206836U (en) * | 1986-09-10 | 1987-11-18 | 陕西省机械研究所 | Automatic cutting tool alignment equipment of machine tool |
| KR100704050B1 (en) * | 2006-03-22 | 2007-04-04 | 한국생산기술연구원 | Method for compensation of tool alignment error |
| CN201516566U (en) * | 2009-10-22 | 2010-06-30 | 南京航空航天大学 | Automatic tool setting and work-piece measuring device of numerically controlled lathe |
| CN203448688U (en) * | 2013-09-13 | 2014-02-26 | 新乡职业技术学院 | Lathe tool setter |
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- 2014-03-26 CN CN201410115479.3A patent/CN103921167B/en not_active Expired - Fee Related
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