CN101185983A - Non-conducting material electric spark milling method - Google Patents
Non-conducting material electric spark milling method Download PDFInfo
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- CN101185983A CN101185983A CNA2007101150538A CN200710115053A CN101185983A CN 101185983 A CN101185983 A CN 101185983A CN A2007101150538 A CNA2007101150538 A CN A2007101150538A CN 200710115053 A CN200710115053 A CN 200710115053A CN 101185983 A CN101185983 A CN 101185983A
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Abstract
The invention relates to an EDM milling method used for nonconductive materials, belonging to a mechanical machining field. When machining, a tool anode and a tool cathode are respectively connected with the anode and the cathode of an impulse powder supply. The tool anode and the tool cathode are provided with tubular structures and are arranged on the same shaft, and are separated by an insulation medium layer. A conductive liquid flows from the central hole of internal tool electrodes to the surface of the nonconductive material, and triggers discharge when flowing through the ends of the tool anode and the tool cathode, and then the nonconductive material can be corrosion-removed and machined by effects of high temperatures and high voltages generated by the discharge instantaneously. A main shaft head can drive the tool anode and the tool cathode to revolve and do a Z-direction movement. A nonconductive material work piece to be machined is arranged on X and Y movable work tables, and an EDM milling to the nonconductive material work piece with a complicated shape is realized by a linkage between the main shaft head and the work tables. The EDM milling method used for nonconductive materials of the invention has the advantages that machining efficiency is high, surface quality is high and the environment is not polluted, etc.
Description
Technical field
The invention belongs to field of machining, relate to a kind of non-conducting material electric spark milling method.
Background technology
At present, the more non-conducting material electric processing method of Chinese scholars research mainly contains: methods such as electrolysis electric spark Compound Machining, auxiliary electrode processing, high-voltage spark processing.
The research and development of non-conductive difficult-to-machine material spark erosion technique are research focuses in current EDM Technology field.At present, Chinese scholars focuses mostly in the non-conductive difficult-to-machine material electrolysis electric spark Combined Machining Technology of research, this kind process technology is to utilize the spark discharge effect in the electrolyte to process, add the man-hour tool-electrode and connect the negative pole of the pulse power, auxiliary electrode connects the positive pole of the pulse power, when two interpolars add pulse voltage, by electrochemical action, produce bubble on the tool-electrode surface, make the high electric potential gradient of formation between tool-electrode surface and electrolyte by this bubble, cause spark discharge, TRANSIENT HIGH TEMPERATURE during by discharge and shock wave etc. are used for reaching the purpose of ablation non-conducting material.Problems such as this kind processing method exists that efficient is low, energy consumption is big, machining accuracy is low, surface quality is poor, also discharges harmful water electrolytic gas simultaneously in the process, and processing environment is relatively poor.There are problems such as efficient is low, energy consumption is big at common non-conductive difficult-to-machine material electrolysis electric spark Combined Machining Technology, Liu Yonghong has proposed inflation electrolysis electric spark Combined Machining Technology, though the productivity ratio of this process technology is greatly improved, but be applied to actual production and still show lower, its machining accuracy and surface quality are all relatively poor, also discharge harmful water electrolytic gas simultaneously in the process, processing environment is relatively poor.
The auxiliary electrode spark erosion machining is placed on a sheet metal or wire netting on the surface of non-conducting material in advance as auxiliary electrode, after auxiliary electrode is punched in the tool-electrode discharge, on the non-conducting material surface, form one deck tungsten carbide/conductive layer, make surface of the work have electric conductivity, produce discharge between tool-electrode and the new conductive layer that forms, in the old conductive layer of ablation, produce new conductive layer, thereby realize spark machined non-conducting material; After this, people adopt again that coating metal, coating electrically conductive coating wait the method that forms conductive layer on the surface of non-conducting material, realized the spark machined of non-conducting material, but its working (machining) efficiency and precision are all lower.
High-voltage spark processing is the workpiece of putting into insulation between sharp electrode and plate electrode, and two interpolars are direct current or industrial frequency AC high voltage in addition, makes near the air the sharp electrode breakdown, and the glow discharge ablation takes place.Because there is parasitic capacitance in two interpolars, and power supply is become high frequency or pulse feature, can flow through bigger glow current.Its employed high voltagehigh frequency power source voltage is 5000～6000 volts, and ceiling voltage is 12000 volts, and frequency is that tens of thousand Hz are to tens of million Hz.This kind processing method only can be used for the processing of shallow bore hole, and the surface of institute's machining hole is more coarse.
Summary of the invention
The object of the present invention is to provide a kind of non-conductive material electric spark milling method, develop efficient, practical non-conducting material electric spark milling process technology, problems such as the working (machining) efficiency that solves non-conductive difficult-to-machine material is low, cost height.
Principle of the present invention is: positive and negative tool-electrode links to each other with the positive and negative electrode of the pulse power respectively; Positive and negative tool-electrode is a tubular structure, is installed together by coaxial, and two interpolars are separated by an insulating medium layer; Conduction liquid flows to the surface of non-conducting material from the centre bore of interior tool-electrode, during through the end of positive and negative tool-electrode, causes spark discharge at conduction liquid longshore current, and TRANSIENT HIGH TEMPERATURE, the high pressure that produces during by discharge is used for ablation and processes non-conducting material; The tool-electrode head of being made up of positive and negative tool-electrode is installed on the main tapping, main tapping can drive that the tool-electrode head rotates and the moving of Z direction, processed non-conducting material workpiece is installed on X, the Y travelling table, by the interlock between main tapping and the workbench, realize electric spark milling processing to complicated shape non-conducting material workpiece.
The present invention has following advantage:
1. TRANSIENT HIGH TEMPERATURE, high pressure that the spark discharge effect that utilizes the conduction liquid of the positive and negative tool-electrode end face of flowing through to cause on the non-conducting material surface produces come ablation processing non-conducting material, can process various non-conductive difficult-to-machine materials.
2. by adjusting the spark discharge parameter, can on same lathe, realize to non-conducting material slightly, in, fine finishining.
3. in the non-conducting material electric spark milling process, the macroscopical active force between positive and negative tool-electrode and workpiece is very little, can realize the processing to the low rigidity non-conducting material part of complexity easily.
4. adopt the water-base conductive liquid of no electrolysis to make the electric spark milling working solution, the process effect that do not produce electrolysis has been avoided electrolysis electric spark combined machining method problem, the problem includes: processing environment is poor, the problem of easy-to-rust lathe.
Description of drawings
Fig. 1 is the system's pie graph according to the designed non-conducting material electric spark milling method that goes out of the present invention.
The specific embodiment
Referring to Fig. 1.In system's pie graph of non-conducting material electric spark milling method of the present invention, the 1st, numerical control system is mainly used in the control of speed, displacement and machined parameters etc.; The 2nd, positive tool-electrode links to each other with the positive pole of the pulse power, is installed on the negative tool-electrode by the insulation spacer, can rotate and the moving of Z direction with negative tool-electrode; The 3rd, negative tool-electrode links to each other with the negative pole of the pulse power, is installed on the main tapping, can rotate and Z direction mobile with main tapping; The 4th, the lead of connection digital control system and main shaft DC servo-motor is for DC servo motor provides the Detection ﹠ Controling loop; The 5th, axis system, but, main tapping drive shaft head makees the dc motor that DC servo-motor that the Z direction moves and drive shaft rotate but being housed on it, under the control of servo-control system, main tapping drives that the tool-electrode head rotates and the moving of Z direction; The 6th, conduction liquid, with graphite is that conducting medium is formulated, add and conduct electricity liquid man-hour and inject the surface of non-conducting material by the endoporus of negative tool-electrode, cause spark discharge when flowing through positive and negative tool-electrode end at conduction liquid, TRANSIENT HIGH TEMPERATURE, the high pressure that produces during by discharge is used for ablation and processes non-conducting material; The 7th, connect the negative pole of the pulse power and the lead of negative tool-electrode, provide electric spark milling to add the current path in man-hour; The 8th, the pulse power provides needed pulse electric energy in the spark discharge milling process; The 9th, connect the positive pole of the pulse power and the lead of positive tool-electrode, provide electric spark milling to add the current path in man-hour; The 10th, the insulation spacer is used to isolate positive and negative tool-electrode; The 11st, processed non-conducting material workpiece; The 12nd, the sponge brush head is used for brushing conduction liquid to non-conductive workpiece material surface, creates the conductive condition of surface of the work; 13X, Y direction travelling table, under the control action of digital control system, the drive workpiece is X, the Y direction moves; The 14th, the lead of the DC servo-motor of connection digital control system and X, Y direction travelling table is for X, Y DC servo motor provide the Detection ﹠ Controling loop.Add man-hour, conduction liquid in the interior tool-electrode centre bore is brushed on the surface of non-conductive workpiece material workpiece by the sponge brush head, when conduction liquid is flowed through the end of positive and negative tool-electrode along the non-conducting material surface, cause spark discharge, TRANSIENT HIGH TEMPERATURE, the high pressure that is produced by when discharge is used for ablation and processes non-conducting material.
Claims (2)
1. non-conducting material electric spark milling method, it is characterized in that: the positive and negative tool-electrode of tubulose of electric spark milling processing usefulness is installed together by coaxial, two interpolars are separated by an insulating medium layer, conduction liquid flows out from the centre bore of interior tool-electrode, when conduction liquid is flowed through the end of positive and negative tool-electrode along the non-conducting material surface, cause spark discharge, TRANSIENT HIGH TEMPERATURE, the high pressure that is produced by when discharge is used for ablation and processes non-conducting material.
2. non-conducting material electric spark milling method as claimed in claim 1, it is characterized in that: the tool-electrode head of being made up of positive and negative tool-electrode is installed on the main tapping, main tapping can drive that the tool-electrode head rotates and the moving of Z direction, processed non-conducting material workpiece is installed on X, the Y travelling table, by the interlock between main tapping and the workbench, realize electric spark milling processing to complicated shape non-conducting material workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101150538A CN100519031C (en) | 2007-11-26 | 2007-11-26 | Non-conducting material electric spark milling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101150538A CN100519031C (en) | 2007-11-26 | 2007-11-26 | Non-conducting material electric spark milling method |
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| CN101185983A true CN101185983A (en) | 2008-05-28 |
| CN100519031C CN100519031C (en) | 2009-07-29 |
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| CNB2007101150538A Active CN100519031C (en) | 2007-11-26 | 2007-11-26 | Non-conducting material electric spark milling method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275021A (en) * | 2011-07-21 | 2011-12-14 | 北京迪蒙吉意超硬材料技术有限公司 | Device and method for machining high pressure electric spark beam capable of rotating workpiece |
| CN103934521A (en) * | 2013-01-17 | 2014-07-23 | 阿杰·查米莱斯股份有限公司 | Electrical discharge milling machine |
| CN105234508A (en) * | 2015-11-16 | 2016-01-13 | 四川明日宇航工业有限责任公司 | Method for electrically milling high-temperature alloy |
| CN106180923A (en) * | 2015-04-29 | 2016-12-07 | 首都航天机械公司 | A kind of micro three-dimensional structure electric spark milling process method |
| CN106863624A (en) * | 2017-03-17 | 2017-06-20 | 广东工业大学 | A kind of device of discharging milling insulating materials |
| CN106863623A (en) * | 2017-03-17 | 2017-06-20 | 广东工业大学 | A kind of device of the turning insulating materials that discharges |
| CN107363350A (en) * | 2017-09-12 | 2017-11-21 | 天津科技大学 | Contactless EDM System |
| EP3421164A1 (en) | 2017-06-27 | 2019-01-02 | MTA Számítástechnikai és Automatizálási Kutató Intézet | Method for micro-electro-discharge machining of ceramic workpieces |
| CN112475491A (en) * | 2020-11-20 | 2021-03-12 | 大连工业大学 | Bipolar electrode electric spark machining device and method suitable for insulating hard and brittle materials |
| CN114012191A (en) * | 2021-11-18 | 2022-02-08 | 大连工业大学 | Electric spark grinding device and method suitable for bipolar grinding wheel of hard and brittle insulating material |
-
2007
- 2007-11-26 CN CNB2007101150538A patent/CN100519031C/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275021A (en) * | 2011-07-21 | 2011-12-14 | 北京迪蒙吉意超硬材料技术有限公司 | Device and method for machining high pressure electric spark beam capable of rotating workpiece |
| CN103934521A (en) * | 2013-01-17 | 2014-07-23 | 阿杰·查米莱斯股份有限公司 | Electrical discharge milling machine |
| CN103934521B (en) * | 2013-01-17 | 2017-06-09 | 阿杰·查米莱斯股份有限公司 | Spark discharge milling machine |
| CN106180923B (en) * | 2015-04-29 | 2018-08-21 | 首都航天机械公司 | A kind of micro three-dimensional structure electric spark milling process method |
| CN106180923A (en) * | 2015-04-29 | 2016-12-07 | 首都航天机械公司 | A kind of micro three-dimensional structure electric spark milling process method |
| CN105234508B (en) * | 2015-11-16 | 2018-09-25 | 四川明日宇航工业有限责任公司 | A kind of high temperature alloy electric router cutting method |
| CN105234508A (en) * | 2015-11-16 | 2016-01-13 | 四川明日宇航工业有限责任公司 | Method for electrically milling high-temperature alloy |
| CN106863623A (en) * | 2017-03-17 | 2017-06-20 | 广东工业大学 | A kind of device of the turning insulating materials that discharges |
| CN106863624A (en) * | 2017-03-17 | 2017-06-20 | 广东工业大学 | A kind of device of discharging milling insulating materials |
| EP3421164A1 (en) | 2017-06-27 | 2019-01-02 | MTA Számítástechnikai és Automatizálási Kutató Intézet | Method for micro-electro-discharge machining of ceramic workpieces |
| CN107363350A (en) * | 2017-09-12 | 2017-11-21 | 天津科技大学 | Contactless EDM System |
| CN107363350B (en) * | 2017-09-12 | 2023-07-18 | 天津科技大学 | Non-contact electric spark machining system |
| CN112475491A (en) * | 2020-11-20 | 2021-03-12 | 大连工业大学 | Bipolar electrode electric spark machining device and method suitable for insulating hard and brittle materials |
| CN114012191A (en) * | 2021-11-18 | 2022-02-08 | 大连工业大学 | Electric spark grinding device and method suitable for bipolar grinding wheel of hard and brittle insulating material |
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| Publication number | Publication date |
|---|---|
| CN100519031C (en) | 2009-07-29 |
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