CN101176934A - Method for milling non-conducting material spark - Google Patents
Method for milling non-conducting material spark Download PDFInfo
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- CN101176934A CN101176934A CNA2007101149206A CN200710114920A CN101176934A CN 101176934 A CN101176934 A CN 101176934A CN A2007101149206 A CNA2007101149206 A CN A2007101149206A CN 200710114920 A CN200710114920 A CN 200710114920A CN 101176934 A CN101176934 A CN 101176934A
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Abstract
The invention relates to an electrical spark planing method with non-conductive material, belonging to the technical field of mechanical machining. The positive and negative poles for electrical spark milling processing are respectively connected with the positive and negative poles of the impulse power, and move in Z direction with the driving of the main shaft. During machining, the middle part between the positive and negative terminals produces spark discharge on the surface of the non-conductive material, form a discharging channel and erode the processing non-conductive material with the high temperature and pressure produced by the discharging channel surface. The emulsion liquid is injected into the discharging clearance for compressing the discharging channel, removing the erosion products and cooling the electrodes. The worktable drives the work pieces to move in X and Y directions and the fillet of the main shaft drive the electrodes to move in Z direction, which realizes the electrical spark milling of the non-conductive material. The invention has the advantages of high processing efficiency, high surface quality, and no pollution to environment.
Description
Technical field
The invention belongs to field of machining, relate to a kind of method for milling non-conducting material spark.
Background technology
At present, the more non-conducting material electric processing method of Chinese scholars research mainly contains: methods such as high-voltage spark processing, auxiliary electrode processing, electrolysis electric spark Compound Machining.
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.The high voltagehigh frequency power source voltage of its use 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.
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 tool-electrode is punched auxiliary electrode, on the non-conducting material surface, form one deck tungsten carbide/conductive layer, make surface of the work have electric conductivity, 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 aquadag 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.
Electrolysis spark discharge Compound Machining is the maximum non-conducting material EDM Technology of current research, and it is to be used for a kind of electric processing method of ablation processing non-conducting material by means of the spark discharge in the electrolyte.It adds the man-hour tool-electrode and connects 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 by this bubble between the working solution of tool-electrode surface and conduction and form high electric potential gradient, cause spark discharge, TRANSIENT HIGH TEMPERATURE when discharging 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.
At present, do not see the bibliographical information of relevant milling non-conducting material spark technology both at home and abroad as yet.
Summary of the invention
The object of the present invention is to provide a kind of non-conductive material spark milling method, develop efficient, practical non-conducting material electric spark 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 installed on the main tapping simultaneously, and doing the motion of Z direction with main tapping when, self also can do axial feed motion positive and negative tool-electrode, to keep suitable discharging gap; Add man-hour, produce spark discharge between the end of positive and negative tool-electrode on the non-conducting material surface, form discharge channel, high temperature, the high pressure that produces when flowing through the non-conducting material surface by this discharge channel is used for ablation and processes non-conducting material; Water-based emulsion liquid is dashed to be annotated between discharging gap, is used to compress discharge channel, gets rid of galvanic corrosion product, cooling of tool electrode; Processed non-conducting material workpiece is installed on X, the Y direction travelling table, by the interlock between main tapping and the workbench, realizes the spark milling processing to the non-conducting material workpiece.
The present invention has following advantage:
1. high temperature, the high pressure that produces when utilizing discharge channel between positive and negative tool-electrode to flow through the non-conducting material surface is used for ablation and processes non-conducting material, can process various unmanageable non-conducting materials.
2. by adjusting spark discharge parameter and tool-electrode, can on same lathe, realize to non-conducting material slightly, in, fine finishining.
3. in the milling non-conducting material spark 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. make the spark milling working solution with water base emulsion, process does not have electrolysis and exists, and has avoided electrolysis electric spark combined machining method problem, the problem includes: processing environment is poor, the problem of easy-to-rust lathe.
5. the working (machining) efficiency height of spark milling non-conducting material, more existing non-conducting material electric spark processing method improves about 2 times.
Description of drawings
Fig. 1 is the system's pie graph according to the designed method for milling non-conducting material spark that goes out of the present invention.
The specific embodiment
Referring to Fig. 1.In system's pie graph of method for milling non-conducting material spark of the present invention, the 1st, the pulse power provides needed pulse electric energy in the spark discharge planing process; The 2nd, connect the positive pole of the pulse power and the lead of positive tool-electrode, provide spark milling to add the current path in man-hour; The 3rd, positive tool-electrode links to each other with the positive pole of the pulse power, is installed on the main tapping, and when doing the Z direction with main tapping and moving, positive tool-electrode self also can be done axial feed motion; The 4th, axis system is made the DC servo-motor that the Z direction moves but main tapping and drive shaft head are housed on it, and under the control of servo-control system, main tapping drives positive and negative tool-electrode and does the Z direction and move; The 5th, negative tool-electrode links to each other with the negative pole of the pulse power, is installed on the main tapping, when doing the Z direction with main tapping and moving, bears tool-electrode self and also can do axial feed motion; The 6th, nozzle, the discharging gap that is used between positive and negative tool-electrode dashes the notes working solution; The 7th, the lead of connection digital control system and main tapping DC servo-motor is for DC servo motor provides the Detection ﹠ Controling loop; The 8th, numerical control system is mainly used in the control of speed, displacement and machined parameters etc.; The 9th, 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; The 10th, water base working solution is used to compress discharge channel, cools off positive and negative tool-electrode, takes away the galvanic corrosion product simultaneously; The 11st, processed non-conducting material workpiece; The 12nd, X, Y direction travelling table, under the control action of digital control system, the drive workpiece is X, the Y direction moves; The 13rd, connect the negative pole of the pulse power and the lead of negative tool-electrode, provide spark milling to add the current path in man-hour.Add man-hour, on the surface of non-conducting material workpiece, produce spark discharge between the end of positive and negative tool-electrode, form discharge channel, be used for ablation and process non-conducting material by flow through high temperature, high pressure that non-conducting material when surface produce of this discharge channel, by the interlock between main tapping and the workbench, realize spark milling processing to the non-conducting material workpiece.
Claims (2)
1. method for milling non-conducting material spark, it is characterized in that: on the non-conducting material surface, produce spark discharge between the end of positive and negative tool-electrode, form discharge channel, high temperature, the high pressure that produces when utilizing this discharge channel to flow through the non-conducting material surface is used for ablation and processes non-conducting material.
2. method for milling non-conducting material spark as claimed in claim 1, it is characterized in that: positive and negative tool-electrode is installed on the main tapping simultaneously, when doing the Z direction with main tapping and moving, self also can do axial feed motion positive and negative tool-electrode, to keep suitable discharging gap, processed non-conducting material workpiece is installed on X, the Y travelling table, by the interlock between main tapping and the workbench, realizes the spark milling processing to the non-conducting material workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101149206A CN101176934A (en) | 2007-11-19 | 2007-11-19 | Method for milling non-conducting material spark |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101149206A CN101176934A (en) | 2007-11-19 | 2007-11-19 | Method for milling non-conducting material spark |
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| CN101176934A true CN101176934A (en) | 2008-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101149206A Pending CN101176934A (en) | 2007-11-19 | 2007-11-19 | Method for milling non-conducting material spark |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511933A (en) * | 2017-07-20 | 2017-12-26 | 郑州轻工业学院 | Spray the device and method of the spark discharge processing non-conductive ceramic of low-temperature alloy |
| CN108453328A (en) * | 2018-04-04 | 2018-08-28 | 精英模具（珠海）有限公司 | A kind of plastic mould matches mold device and its technique |
| 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
- 2007-11-19 CN CNA2007101149206A patent/CN101176934A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511933A (en) * | 2017-07-20 | 2017-12-26 | 郑州轻工业学院 | Spray the device and method of the spark discharge processing non-conductive ceramic of low-temperature alloy |
| CN108453328A (en) * | 2018-04-04 | 2018-08-28 | 精英模具（珠海）有限公司 | A kind of plastic mould matches mold device and its technique |
| 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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