EP3956101A1 - Method for supplying cryogenic fluid to a machining machine - Google Patents
Method for supplying cryogenic fluid to a machining machineInfo
- Publication number
- EP3956101A1 EP3956101A1 EP20715401.4A EP20715401A EP3956101A1 EP 3956101 A1 EP3956101 A1 EP 3956101A1 EP 20715401 A EP20715401 A EP 20715401A EP 3956101 A1 EP3956101 A1 EP 3956101A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machining
- fluid
- tool
- valve
- cold box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1038—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
- B23Q11/1053—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality using the cutting liquid at specially selected temperatures
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1038—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1076—Arrangements for cooling or lubricating tools or work with a cutting liquid nozzle specially adaptable to different kinds of machining operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/014—Nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0169—Liquefied gas, e.g. LPG, GPL subcooled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0146—Two-phase
- F17C2225/0153—Liquefied gas, e.g. LPG, GPL
- F17C2225/0169—Liquefied gas, e.g. LPG, GPL subcooled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/05—Applications for industrial use
- F17C2270/0545—Tools
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- the present invention relates to the field of machining mechanical parts.
- Machining is a process of shaping parts by removing material.
- the mechanical energy required for machining, and therefore the formation of chips, is almost entirely transformed into heat.
- the use of cutting fluid remains mandatory to ensure:
- These cutting fluids are mainly whole or soluble oils with a mineral or synthetic base.
- the temperatures encountered in the heart of the cutting zone (commonly +800 ° C to +1000 ° C) lead, on the one hand, to the production of fumes or gases harmful to the external environment, and on the other hand, chemical pollution of shavings and machined surfaces going as far as the alteration of their properties.
- cryogenic machining In the other cases of machining, those which require a strong cooling of the cutting zone, the machining by supplying cryogenic fluid, which will be called in what follows “cryogenic machining”, appear as a cooling solution and lubrication of the very attractive cutting zone, combining the advantages of oils (evacuation of chips, heat transfer fluid, etc.) and those of dry machining (respect for the environment, non-pollution of the surfaces generated, recycling of chips , increased tool life, etc.).
- This cryogenic fluid can be nitrogen and CO2.
- 3 major machining processes are listed: turning, milling and drilling.
- the present invention seeks to provide a system for bringing the cryogen, for example liquid nitrogen, under the best possible conditions in the machining area, and making it possible to take into account the requirements in terms of the machining process, whether it is turning, milling, or drilling.
- cryogen for example liquid nitrogen
- the system allows communication with the control cabinet (piloting) associated with the machine tool, all in safety.
- cryogen box equipment for implementing the cryogen
- Anglo-Saxons call this "skid”
- control / command device of the invention communicating with the existing control cabinet of the machining machine for:
- the machining center calls for fluid and waits for the control / command device to validate that we are in the required operating conditions.
- cryogen for example nitrogen
- the criteria to be followed are mainly the temperature, the pressure and the diphasic rate of the fluid reaching the machining station.
- Too much flow can cause weakening of the cutting tool and premature breakage and
- each recipe which entails a change of cutting tool (uncoupling then re-coupling of the tool at the end of the spindle)
- cryogenic control valve which self-regulates its opening rate as a function of the downstream pressure requested.
- This allows to have a fixed and adjustable pressure upstream of the liquid nitrogen injection ports in the cutting tool and therefore a fixed but adjustable flow rate.
- For each machining recipe we can impose a pressure regulation and therefore flow. This allows us to obtain the optimum flow of liquid nitrogen while maintaining the diameter and passage of liquid nitrogen. The number and position of these holes is sometimes uncontrollable and may meet other requirements.
- the invention therefore relates to a method of machining parts, implementing in the machining zone an inlet of a cryogenic fluid, characterized in that it is implemented on the line connecting the fluid source.
- a valve capable of self-regulating its opening rate according to the pressure requested downstream, making it possible to deliver a fixed and adjustable pressure, and therefore a fixed and adjustable flow , to the machining tool, whatever the tool used, and therefore the number of orifices and the diameter of the fluid ejection orifices characterizing the tool considered.
- the fluid used can be liquid nitrogen or another cryogenic fluid
- the purge gas can be nitrogen gaseous or gaseous CO2 or another gas etc ...
- Cooling ensures that the nitrogen is always at a temperature close to the equilibrium point of liquid nitrogen, which ensures that it is in the liquid phase and not in the gas phase (and in any case of minimize the rate of two-phase).
- the cooling is carried out until the outlet of the cold box (11 in the appended figure), upstream of the hose 13 in the appended figure.
- the nitrogen temperature is controlled (for example just before entering the machining center): if this temperature rises above a set point (close to equilibrium point), we open the purge valve to call for nitrogen and purge the gas part which has not been sufficiently purged, for example in a degasser pot. During this re-cooling phase, a stop contact at the machining center is given.
- cryogen for example liquid nitrogen
- Tool disconnection The purging of the openings and grooves for the passage of liquid nitrogen with nitrogen gas at each tool change and when the installation is started allows cleaning and removal of humidity. This purge can be a nitrogen gas injection delay at each change of machining recipe. A "recipe" is possible depending on the type of tool to set this purge time.
- Nitrogen is used to heat the tool holder to aid in uncoupling. For this function, we could also preheat gaseous nitrogen to help with this warming.
- a temperature measurement of the fluid delivered for example just before entering the machining zone, and an adaptation of the flow rate implemented according to of this fluid temperature measurement. It can be seen in particular that when the upstream fluid storage has recently been filled, the fluid is in a sub-cooled state, therefore colder than in normal times, it is then advantageous to adjust the pressure supplied by said regulating valve. , to reduce the flow delivered while maintaining the same available energy.
- “recently” filled is meant a filling that took place at most a few hours before, or even a day before ...
- FIG. 1 The attached Figure 1 provides a partial schematic view of an installation suitable for the implementation of the invention.
- Nomenclature figure 1 is a diagrammatic representation of Nomenclature figure 1
- the present invention is concerned with regulating the pressure delivered to the machining station, this as a function of a “recipe” implemented in this station, ie for all and each tool condition used, from number of orifices, diameter of these orifices etc ...
- the approach according to these previous works focused on supplying several machining stations in parallel, with sub-cooled liquid, at a fixed pressure in each station, and proceeded to this involves immersion of the cryogen in a cryogenic bath, before its arrival at the machining station.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Turning (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1904159A FR3095153B1 (en) | 2019-04-18 | 2019-04-18 | Process for supplying cryogenic fluid to a machining machine |
PCT/EP2020/059796 WO2020212187A1 (en) | 2019-04-18 | 2020-04-06 | Method for supplying cryogenic fluid to a machining machine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3956101A1 true EP3956101A1 (en) | 2022-02-23 |
Family
ID=67956964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20715401.4A Pending EP3956101A1 (en) | 2019-04-18 | 2020-04-06 | Method for supplying cryogenic fluid to a machining machine |
Country Status (7)
Country | Link |
---|---|
US (1) | US12070826B2 (en) |
EP (1) | EP3956101A1 (en) |
JP (1) | JP7510954B2 (en) |
CN (1) | CN113784818A (en) |
CA (1) | CA3136390C (en) |
FR (1) | FR3095153B1 (en) |
WO (1) | WO2020212187A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3143396A1 (en) | 2022-12-20 | 2024-06-21 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Fluid distribution nozzle and machining installation comprising such a nozzle |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3096282B2 (en) * | 1997-12-12 | 2000-10-10 | 株式会社ダイナテック | Gas lubricant generator |
JP4865371B2 (en) | 2006-03-15 | 2012-02-01 | ブラザー工業株式会社 | Spindle cooling device for machine tools |
CN201006580Y (en) * | 2006-12-26 | 2008-01-16 | 浙江工业大学 | Stock removing processing refrigerating mechanism |
US9016076B2 (en) * | 2007-08-28 | 2015-04-28 | Air Products And Chemicals, Inc. | Apparatus and method for controlling the temperature of a cryogen |
US8303220B2 (en) | 2009-04-22 | 2012-11-06 | Creare Incorporated | Device for axial delivery of cryogenic fluids through a machine spindle |
US9581386B2 (en) * | 2010-07-05 | 2017-02-28 | L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Products Georges Claude | Apparatus and process for separating air by cryogenic distillation |
FR3004784B1 (en) * | 2013-04-18 | 2015-04-10 | Air Liquide | METHOD AND SYSTEM FOR SUPPLYING AT LEAST ONE WORKING UNIT IN SUB-COOLING CRYOGENIC LIQUID |
US9821425B2 (en) * | 2014-03-05 | 2017-11-21 | 5Me Ip, Llc | Device for supplying subcooled liquid cryogen to cutting tools |
FR3024540B1 (en) * | 2014-07-29 | 2018-02-16 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | FLOW METER USED FOR THE ASSAY OF ENERGY USED IN A PROCESS USING A CRYOGENIC FLUID |
CN105498566B (en) * | 2014-09-23 | 2020-11-06 | 上海航天设备制造总厂 | Gas-liquid two-phase flow mixed low-temperature nitrogen jet generating device |
US20180104750A1 (en) * | 2016-10-18 | 2018-04-19 | United Technologies Corporation | Feedback-controlled system for cyrogenically cooling machining tools |
JP2018137388A (en) | 2017-02-23 | 2018-08-30 | 東芝メモリ株式会社 | Semiconductor storage device and manufacturing method of the same |
CN108857570A (en) * | 2018-07-17 | 2018-11-23 | 珠海格力电器股份有限公司 | Oil cooling unit system and control method thereof |
-
2019
- 2019-04-18 FR FR1904159A patent/FR3095153B1/en active Active
-
2020
- 2020-04-06 US US17/604,538 patent/US12070826B2/en active Active
- 2020-04-06 EP EP20715401.4A patent/EP3956101A1/en active Pending
- 2020-04-06 WO PCT/EP2020/059796 patent/WO2020212187A1/en active Application Filing
- 2020-04-06 CA CA3136390A patent/CA3136390C/en active Active
- 2020-04-06 JP JP2021560836A patent/JP7510954B2/en active Active
- 2020-04-06 CN CN202080032335.5A patent/CN113784818A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JP7510954B2 (en) | 2024-07-04 |
FR3095153A1 (en) | 2020-10-23 |
CA3136390C (en) | 2023-09-19 |
WO2020212187A1 (en) | 2020-10-22 |
US12070826B2 (en) | 2024-08-27 |
US20220203490A1 (en) | 2022-06-30 |
CA3136390A1 (en) | 2020-10-22 |
CN113784818A (en) | 2021-12-10 |
JP2022528789A (en) | 2022-06-15 |
FR3095153B1 (en) | 2021-11-26 |
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Owner name: AIR LIQUIDE FRANCE INDUSTRIE Owner name: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE |
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