CN1327996C - Method of high efficiency cooling and removing etched matter of efficient discharge milling processing - Google Patents
Method of high efficiency cooling and removing etched matter of efficient discharge milling processing Download PDFInfo
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- CN1327996C CN1327996C CNB2004100416329A CN200410041632A CN1327996C CN 1327996 C CN1327996 C CN 1327996C CN B2004100416329 A CNB2004100416329 A CN B2004100416329A CN 200410041632 A CN200410041632 A CN 200410041632A CN 1327996 C CN1327996 C CN 1327996C
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Abstract
The present invention relates to a method for cooling and removing etched matter in high efficiency of high efficiency discharge milling processing, which is characterized in that in the processing, three kinds of cooling methods are combined for cooling a processing area, an electrode and a work piece and for removing etched matter, wherein a first method is immersion cooling, namely the whole of the work piece is immersed in a cooling liquid; a second method is cooling of inner washing liquid and the removing of the etched matter, namely that the high-voltage cooling liquid which is sprayed to the processing area, is filled in a pipe of a hollow electrode; a third method is the cooling of outer coating liquid and the removing of the etched matter, namely that cooling liquid which is sprayed to the processing area, is filled from the outer wall of the pipe of the hollow electrode. The three methods of the present invention are organically combined; therefore, the problems of the cooling and the removing of the etched matter of high efficiency discharge milling processing are effectively solved. The present invention has the practical significance for the development and the application to the technology of the high efficiency discharge milling processing.
Description
Technical field
The present invention relates to a kind of efficient discharging milling processing in electric machining (as electric arc, the electric spark) field, the method that is specifically related to be suitable for a kind of efficient cooling of this processing and discharges etched matter.
Background technology
In fields such as Aero-Space, military project, gas turbine, mould, there are the parts of a lot of special materials to process, such as titanium alloy, high temperature heat-resisting, stainless steel etc., these tack of materials are stronger, poor thermal conductivity, machining property is very poor, working (machining) efficiency is extremely low, and the cutter expense is also very big, has therefore seriously restricted the technological progress and the development of these industries.
In recent years, along with the develop rapidly of EDM Technology and technological level, carried as the forward position EDM Technology at the milling shaping process technology of above-mentioned special material.General spark-erosion sinking processing need be used the complicated electrode consistent with the processing cavity shape, the manufacturing difficulty of electrode and cost height, and the electric spark layered milling more and more is subjected to people's attention as a kind of new process.Its basic principle is: adopt the long electrode (such as the hollow rod-shape cylinder electrode) of simple geometric shape, come processed complex workpiece and complex-shaped surface mould by the efficient discharging milling method.This method has brought breakthrough development for electrical discharge machining process and design, this design philosophy and flexibly processing method also more and more approved by vast colleague.Its effect is that machine cut processing is incomparable when particularly being applied to process the such poor thermal conductivity of similar titanium alloy, high temperature heat-resisting, tough workpiece, especially adopt the efficient discharge processing method that the part of these special materials is carried out roughing, its advantageous characteristics are arranged again, also are simultaneously a kind of very main trend of electric machining milling process development.But, adopt simple hollow edged electrode to carry out in the efficient discharging milling processing, because the density of processing electric current is very big, the processing etched matter is a lot, in order to guarantee carrying out smoothly of highly-efficient processing, just must effectively cool off, simultaneously machining area and workpiece, electrode, also to as early as possible etched matter be discharged from machining area, and reduce etched matter and the adhesion of processing sidewall as far as possible.
In the past in the known technology, the processing of high-speed electric spark aperture is all adopted in the high pressure towards but mode of liquid cooling, is about to electrode design and becomes hollow tubular, feeds high-pressure coolant in the pipe, cools off machining area and electrode on the one hand towards liquid in this, utilizes punching press to carry out chip removal on the other hand; In Electric Discharge Machining, generally all adopt the immersion liquid type of cooling, be about to workpiece and be immersed in the cooling fluid; In Wire-cut Electrical Discharge Machining, generally adopt but mode of outsourcing liquid or outwash liquid cooling, also have workpiece is immersed in the cooling fluid and process.But facts have proved that if above-mentioned various cooling means are applied in separately in the efficient discharging milling processing, effect is not ideal enough, have in addition be difficult to keep normal process.
Summary of the invention
The purpose of this invention is to provide a kind of efficient cooling of efficient discharging milling processing and discharge the etched matter method, this method can effectively solve efficient discharging milling and process to a difficult problem of cooling off and the discharge etched matter brings.
For achieving the above object, the technical solution used in the present invention is: a kind of efficient cooling of efficient discharging milling processing and discharge etched matter method, in the processing, adopt the combination of three kinds of types of cooling that processing district, electrode and workpiece are cooled off and discharge etched matter, wherein, first kind is to soak cooling, is about to whole workpiece and is immersed in the cooling fluid: second kind is interiorly but to reach the discharge etched matter towards liquid cooling, promptly feeds the high-pressure coolant of directive machining area in the pipe of hollow electrode; The third is that the outsourcing liquid cooling but reaches the discharge etched matter, promptly feeds the cooling fluid of directive machining area from the pipe outer wall of hollow electrode.
In the such scheme, described the third cools off preferably that implementation method is that the outsourcing cooling duct is set in the electrode guider, feeds high-pressure coolant in the passage and forms the cooling of outsourcing electrode bottom and discharge the etched matter mode.
In the such scheme, described the third cooling can adopt following method to realize:
1, is the guiding relation of utilizing electrode guider and electrode, coaxially below pilot hole be provided with one section greater than electrode diameter, and downward opening outsourcing liquid cooling is passage but, and feeds cooling and the discharge etched matter mode that cooling fluid forms outsourcing electrode bottom to this passage.
2, be in the electrode bottom, several rush at the processing district along the electrode outside outer nozzle be set, and feed the cooling of cooling fluid formation outsourcing electrode bottom and arrange the etched matter mode of discharging to this nozzle around electrode.
Because the technique scheme utilization, the present invention compared with prior art has following advantage and effect:
1, in efficient discharging milling processing, often adopts big electric current in order to improve working (machining) efficiency, such as 200A.Because electrode sections is long-pending less, current density is very big, in order to guarantee carrying out smoothly of highly-efficient processing, just must effectively cool off machining area and workpiece, electrode, simultaneously, also to as early as possible etched matter be discharged from machining area, and reduce etched matter and the adhesion of processing sidewall as far as possible.And various ways use the back effect all undesirable in the prior art.The present invention effectively makes up above three kinds of cooling means, and is applied in the efficient discharging milling processing, has obtained satisfied practical function.
2, the present invention is with above-mentioned soak, in carry out organic assembling towards liquid and three kinds of cooling means of outsourcing liquid, the effect one of soak is that whole workpiece is cooled off on the effect, the 2nd, splashing in preventing to process: interior effect one towards liquid is that cooling is forced in machining area part and electrode, the 2nd, utilize the impulse force of its high-pressure coolant to discharge etched matter: the effect one of outsourcing liquid is from external reinforcing machining area and electrode to be cooled off, the 2nd, utilize the impulse force of its high-pressure coolant to discharge etched matter, the 3rd, the sidewall of workpiece to be machined is washed away, can significantly reduce the adhesion between etched matter and the sidewall.
3, in general efficient discharging milling processing is adopted long simple electrode to add the guider guiding to process, liquid-charging type can be realized in conjunction with hollow electrode among the present invention, and outsourcing liquid can be provided with the cooling duct in conjunction with guider and realizes (shown in accompanying drawing 1), therefore implements easily.
4, because the present invention preferably resolves the cooling in the efficient discharging milling processing and discharges the problem of etched matter, the development and the application of the efficient discharging milling technology in the electric machining field had practical significance.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention principle schematic.
Accompanying drawing 2 is the partial enlarged drawing of Fig. 1.
Among the figure, 1, workpiece; 2, soak; 3, hollow electrode; 4, guider; 5, interior towards liquid; 6, outsourcing liquid.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment: accompanying drawing 1 carries out efficient numerically controlled milling discharge machining principle figure for adopting simple long electrode, work piece 1 is the engine turbine blade, material is a high temperature heat-resisting, mills out the space curved surface of turbo blade by efficient discharge layered milling method for processing.The high-efficient milling of this roughing type discharge processing adopts draw ratio at 80: 1 simple hollow electrode 3 on the Numeric Control Technology basis, adds guider 4 guiding, to the workpiece 1 layered milling processing that is shaped of discharging.Described simple hollow electrode 3 is bar-shaped cylinder electrode, and length is 1000mm, and diameter is Φ 6mm, and the kernel of section of simple hollow electrode 3 is provided with porous.Electrode is around self axis rotation in discharging milling, simultaneously in the processing, adopt the combination of three kinds of types of cooling that processing district, electrode and workpiece are cooled off and discharge etched matter, wherein, first kind is to soak cooling, being about to whole workpiece is immersed in the cooling fluid (soak 2): second kind is interior towards liquid 5 coolings and discharge etched matter, promptly feeds the high-pressure coolant of directive machining area in the pipe of hollow electrode 3; The third is 6 coolings of outsourcing liquid and discharges etched matter, and the outsourcing cooling duct promptly is set in electrode guider 4, feeds high-pressure coolant in the passage and forms the cooling of outsourcing electrode 3 bottoms and discharge the etched matter mode.
Claims (3)
1, a kind of efficient cooling of efficient discharging milling processing and discharge etched matter method, it is characterized in that: in the processing, adopt the combination of three kinds of types of cooling that processing district, electrode and workpiece are cooled off and discharge etched matter, wherein, first kind is to soak cooling, being about to whole workpiece is immersed in the cooling fluid: second kind is interiorly but to reach the discharge etched matter towards liquid cooling, promptly feed the high-pressure coolant of directive machining area in the pipe of hollow electrode: the third is that the outsourcing liquid cooling but reaches the discharge etched matter, promptly feeds the cooling fluid of directive machining area from the pipe outer wall of hollow electrode.
2, efficient cooling according to claim 1 and discharge etched matter method, it is characterized in that: above-mentioned the third cooling is to utilize the guiding of electrode guider and electrode relation, coaxially below pilot hole be provided with one section greater than electrode diameter, and downward opening outsourcing liquid cooling is passage but, and feeds cooling and the discharge etched matter mode that cooling fluid forms outsourcing electrode bottom to this passage.
3, efficient cooling according to claim 1 and discharge etched matter method, it is characterized in that: above-mentioned the third cooling is in the electrode bottom, around electrode several rush at the processing district along the electrode outside outer nozzle is set, and feeds the cooling of cooling fluid formation outsourcing electrode bottom and discharge the etched matter mode to this nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100416329A CN1327996C (en) | 2004-08-06 | 2004-08-06 | Method of high efficiency cooling and removing etched matter of efficient discharge milling processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100416329A CN1327996C (en) | 2004-08-06 | 2004-08-06 | Method of high efficiency cooling and removing etched matter of efficient discharge milling processing |
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| Publication Number | Publication Date |
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| CN1597216A CN1597216A (en) | 2005-03-23 |
| CN1327996C true CN1327996C (en) | 2007-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100416329A Expired - Fee Related CN1327996C (en) | 2004-08-06 | 2004-08-06 | Method of high efficiency cooling and removing etched matter of efficient discharge milling processing |
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| CN106695034A (en) * | 2016-12-27 | 2017-05-24 | 成都鑫胜太数控设备有限公司 | Film hole processing device for aviation turbine blade capable of removing remelting layer |
| CN106944874A (en) * | 2017-04-17 | 2017-07-14 | 上海理工大学 | The new heat dissipating method of metal that a kind of utilization low-temperature current takes away heat |
| CN108127200A (en) * | 2017-11-16 | 2018-06-08 | 南京航空航天大学 | Porous metal material module tubes electrolysis sprays Milling Process tool and method |
| CN107956516A (en) * | 2017-11-23 | 2018-04-24 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of honeycomb and its processing method for gas turbine sealing |
| CN108890053B (en) * | 2018-06-29 | 2020-02-21 | 南京航空航天大学 | Double-channel tube electrode and electrolytic cutting method thereof |
| CN109909566B (en) * | 2019-03-18 | 2020-04-24 | 南京航空航天大学 | Low-temperature environment nesting electrochemical machining cathode system and method |
| CN113199095B (en) * | 2021-05-28 | 2022-07-26 | 深圳大学 | Surface micro-groove machining method and micro electric spark machining device |
| CN114951855A (en) * | 2022-01-21 | 2022-08-30 | 珠海合锐新科技有限公司 | Novel group combined electrode for efficient discharge machining of closed integral impeller |
| CN114951863A (en) * | 2022-03-08 | 2022-08-30 | 珠海合锐新科技有限公司 | Electric spark non-deterioration layer processing method for processing small hole of single crystal material blade |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5739497A (en) * | 1994-02-14 | 1998-04-14 | Tanaka; Dwight | Method of and apparatus for increasing the productivity of an electroerosion drill |
| US6211480B1 (en) * | 1997-02-04 | 2001-04-03 | Mitsubishi Denki Kabushiki Kaisha | EDM machine for fine hole and EDM method using such machine |
| EP1249294A2 (en) * | 2001-04-12 | 2002-10-16 | Elenix Inc. | Small hole electric discharge machine drill provided with depth-specific processing means and method of depth-specific processing with small hole electric discharge machine drill |
-
2004
- 2004-08-06 CN CNB2004100416329A patent/CN1327996C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5739497A (en) * | 1994-02-14 | 1998-04-14 | Tanaka; Dwight | Method of and apparatus for increasing the productivity of an electroerosion drill |
| US6211480B1 (en) * | 1997-02-04 | 2001-04-03 | Mitsubishi Denki Kabushiki Kaisha | EDM machine for fine hole and EDM method using such machine |
| EP1249294A2 (en) * | 2001-04-12 | 2002-10-16 | Elenix Inc. | Small hole electric discharge machine drill provided with depth-specific processing means and method of depth-specific processing with small hole electric discharge machine drill |
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| CN1597216A (en) | 2005-03-23 |
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