CN87102713A - The diamond ultraprecision cutting technology of Summoning and difficult-to-machine material - Google Patents
The diamond ultraprecision cutting technology of Summoning and difficult-to-machine material Download PDFInfo
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- CN87102713A CN87102713A CN87102713.5A CN87102713A CN87102713A CN 87102713 A CN87102713 A CN 87102713A CN 87102713 A CN87102713 A CN 87102713A CN 87102713 A CN87102713 A CN 87102713A
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Abstract
Because development of modern industry; requirement on machining accuracy to ferrous metal and difficult-to-machine material is more and more higher; use traditional ultra precision cutting technology to be difficult to realize; and adamantine costing an arm and a leg; the present invention adopts cryogenic liquid protection diamond bit to carry out hyperfine processing; can improve the life-span of diamond bit, thereby obtain tangible economic benefit, save substantial contribution.
Description
The invention belongs to machine-building and manufacture field.
For a long time, the cutting of the diamond super precision of ferrous metal and difficult-to-machine material is the difficult problem that everybody generally acknowledges always.Because the chemical affinity of diamond and metals such as steel, titanium is stronger, therefore adamantine carbon very fast to the surface of the work diffusion caused the rapid wearing and tearing of diamond bit in working angles.Abroad the someone has tested rich carbon gas protection method cutting; its basic principle is preferential diffusion phenomena; promptly in working angles; compare with the solid diamond; the adamantine carbon of carbon ratio in the gas is more active; can at first reacting with surface of the work, slowing down the diffusion of carbon in the diamond, thereby reach the purpose of protective money diamond cutter.But because in working angles; the cutter rake face contacts fine and close with cutting lay in cutting region; protective gas can not directly contact fully with cutting edge roundness; therefore also just can not play a protective role fully; still to cause the wearing and tearing of diamond cutter inevitably, so gas protection method diamond cutting steel can't reach application.〔1〕〔2〕
Development of modern industry, require machining accuracy more and more higher to ferrous metal and difficult-to-machine material, but using traditional ultra precision cutting to add technology is difficult to realize, diamond cutter costs an arm and a leg, as not guaranteeing its service life, just can not solve the machining accuracy of material, in the service life that the objective of the invention is to improve diamond cutter, make it can be used for the ultraprecision cutting of ferrous metal and difficult-to-machine material.
The abrasion mechanism of diamond bit is because the cutting temperature height is to cause one of diamond bit wearing and tearing principal element.From the control cutting temperature, adopted cryogenic liquid as cooling fluid, cool off diamond cutter and workpiece, thereby suppress tool wear, cutting can be carried out smoothly.The present invention adopts liquid nitrogen (130--182 ℃), liquid CO
2(50--76 ℃) is cooling fluid, utilizes compressed air to be power, and liquid nitrogen is taken out extrusion in special container (Dewar bottle), through a nozzle, directly waters in cutting region.In order to guarantee certain dimensional accuracy, the low temperature that also need solve steel shrinks problem, and this can pass through repeatedly repeated test, with its amount of contraction of prediction, thereby determines cutting output.Because the relative motion of cutter and workpiece in the working angles, also should solve the problem of cooling effect, in order to guarantee that cooling fully, reduce cutting temperature, the present invention has adopted two measures: (1) carries out precooling to workpiece earlier, is about to workpiece and is immersed in the liquid nitrogen, utilizes its thermograde then, guarantee that the cutting region temperature is lower than 600 ℃, (2) adopt the cryogenic liquid refrigeration of super-flow.Because diamond cutting cutting-in is less, when cooling fluid is enough abundant, the heat of cutting region can be reduced by the timely heat exchange of workpiece cutter and smear metal, thereby guarantee that cutting temperature is limited in certain limit, this is because there is a critical-temperature in diamond bit when wearing and tearing, if cutting temperature is not controlled at below the critical-temperature, then can not effectively control tool wear, this is a key of the present invention.
The present invention can improve the life-span of diamond cutter, its economic benefit is fairly obvious, according to national current price, the diamond bit 2 that one-level is about 1.5 carats, 600 yuan, as improving ten times of life-spans, just can save 20,000 surplus yuan, national annual diamond bit needs hundreds of, and saving value altogether can be above 1,000,000 yuan.What is more important is used this method can pass by the ferrous metal that at all can't realize and the ultra precision cutting of difficult-to-machine material.
Embodiment:
Ultralow temperature cutting steel, workpiece material 45
#Steel, normalized condition, diameter of work φ 50mm, lathe S1-25S smooth turning lathe, rotation speed n=200n/min, feed S=0.5/min, depth of cut T=1～10 μ m, cutter: natural diamond monocrystalline lathe tool.Life-span compares: 1 minute tool abrasion of normal temperature cutting reaches 0.01mm, the finished surface precision obviously degenerates, feasible cutting can't be carried out, and adopts this technology in reaching 10-20 minute cutting, and cutting surface fineness does not have significant change, be difficult to observe the wearing and tearing of cutter with common microscope, stable cutting process, cutter life improve 10-20 doubly, are enough to keep carrying out smoothly of cutting, its machining accuracy can be controlled 0.005mm, and surface roughness is 0.04 μ m.
Claims (2)
1, the diamond superfine processing method of ferrous metal and difficult-to-machine material.The invention is characterized in that diamond bit carries out hyperfine processing technology to ferrous metal and difficult-to-machine material under the cryogenic liquid protection.
2, according to claim 1: it is characterized in that cooling fluid is liquid nitrogen (130 ℃-182 ℃), liquid CO
2(50 ℃-76 ℃).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102713 CN1010466B (en) | 1987-04-09 | 1987-04-09 | Diamond super-precision cutting process for ferrous metal and difficult-to-machine material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102713 CN1010466B (en) | 1987-04-09 | 1987-04-09 | Diamond super-precision cutting process for ferrous metal and difficult-to-machine material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87102713A true CN87102713A (en) | 1988-04-06 |
| CN1010466B CN1010466B (en) | 1990-11-21 |
Family
ID=4814079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87102713 Expired CN1010466B (en) | 1987-04-09 | 1987-04-09 | Diamond super-precision cutting process for ferrous metal and difficult-to-machine material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010466B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7390240B2 (en) | 2005-10-14 | 2008-06-24 | Air Products And Chemicals, Inc. | Method of shaping and forming work materials |
| US7434439B2 (en) | 2005-10-14 | 2008-10-14 | Air Products And Chemicals, Inc. | Cryofluid assisted forming method |
| US7513121B2 (en) | 2004-03-25 | 2009-04-07 | Air Products And Chemicals, Inc. | Apparatus and method for improving work surface during forming and shaping of materials |
| US7634957B2 (en) | 2004-09-16 | 2009-12-22 | Air Products And Chemicals, Inc. | Method and apparatus for machining workpieces having interruptions |
| US7637187B2 (en) | 2001-09-13 | 2009-12-29 | Air Products & Chemicals, Inc. | Apparatus and method of cryogenic cooling for high-energy cutting operations |
| US8220370B2 (en) | 2002-02-04 | 2012-07-17 | Air Products & Chemicals, Inc. | Apparatus and method for machining of hard metals with reduced detrimental white layer effect |
| CN103691969A (en) * | 2013-12-06 | 2014-04-02 | 大连理工大学 | Method for cutting black metal by diamond tool |
| CN109982812A (en) * | 2016-11-16 | 2019-07-05 | 住友电工硬质合金株式会社 | Method, lathe and the method for manufacturing component that workpiece is processed by using the diamond tool comprising nano-polycrystalline diamond or vapor- phase synthesis single-crystal diamond |
| CN110605403A (en) * | 2019-08-05 | 2019-12-24 | 香港理工大学深圳研究院 | Method for preparing gradient nano-structure metal material by ultra-precision machining technology |
| CN112974879A (en) * | 2021-02-08 | 2021-06-18 | 大连理工大学 | Ultra-low temperature medium internal cooling lathe tool suitable for processing high polymer material |
-
1987
- 1987-04-09 CN CN 87102713 patent/CN1010466B/en not_active Expired
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7637187B2 (en) | 2001-09-13 | 2009-12-29 | Air Products & Chemicals, Inc. | Apparatus and method of cryogenic cooling for high-energy cutting operations |
| US8220370B2 (en) | 2002-02-04 | 2012-07-17 | Air Products & Chemicals, Inc. | Apparatus and method for machining of hard metals with reduced detrimental white layer effect |
| US7513121B2 (en) | 2004-03-25 | 2009-04-07 | Air Products And Chemicals, Inc. | Apparatus and method for improving work surface during forming and shaping of materials |
| US7634957B2 (en) | 2004-09-16 | 2009-12-22 | Air Products And Chemicals, Inc. | Method and apparatus for machining workpieces having interruptions |
| US7390240B2 (en) | 2005-10-14 | 2008-06-24 | Air Products And Chemicals, Inc. | Method of shaping and forming work materials |
| US7434439B2 (en) | 2005-10-14 | 2008-10-14 | Air Products And Chemicals, Inc. | Cryofluid assisted forming method |
| CN103691969A (en) * | 2013-12-06 | 2014-04-02 | 大连理工大学 | Method for cutting black metal by diamond tool |
| CN103691969B (en) * | 2013-12-06 | 2016-04-13 | 大连理工大学 | A kind of method of diamond cutter cutting ferrous metals |
| CN109982812A (en) * | 2016-11-16 | 2019-07-05 | 住友电工硬质合金株式会社 | Method, lathe and the method for manufacturing component that workpiece is processed by using the diamond tool comprising nano-polycrystalline diamond or vapor- phase synthesis single-crystal diamond |
| CN110605403A (en) * | 2019-08-05 | 2019-12-24 | 香港理工大学深圳研究院 | Method for preparing gradient nano-structure metal material by ultra-precision machining technology |
| CN110605403B (en) * | 2019-08-05 | 2021-06-04 | 香港理工大学深圳研究院 | Method for preparing gradient nano-structure metal material by ultra-precision machining technology |
| CN112974879A (en) * | 2021-02-08 | 2021-06-18 | 大连理工大学 | Ultra-low temperature medium internal cooling lathe tool suitable for processing high polymer material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1010466B (en) | 1990-11-21 |
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