CN103317207B - A kind of method of magnetic control arc machining shaft - Google Patents
A kind of method of magnetic control arc machining shaft Download PDFInfo
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- CN103317207B CN103317207B CN201310228848.5A CN201310228848A CN103317207B CN 103317207 B CN103317207 B CN 103317207B CN 201310228848 A CN201310228848 A CN 201310228848A CN 103317207 B CN103317207 B CN 103317207B
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Abstract
The present invention relates to a kind of method of magnetic control arc machining shaft, comprise, step one: axle is fixed on the fixture of described processing platform; Step 2: be fixed on by rotating the arc generation device on the electrode bracket of described processing platform, drives described electrode bracket to drive described rotating the arc generation device on guide rail, move to the bottom of described axle; Step 3: form longitudinal magnetic field in the inside of the drum electrode of described rotating the arc generation device; Step 4: drum electrode and described axle are linked into respectively on two electrodes of arc power, form electric arc, drive the electrode bracket of described processing platform, the axial direction of described rotating the arc generation device along guide rail to described axle moves, make described axle enter the inside of drum electrode by the circular hole in stainless steel cap, electric arc rotates under the influence of a magnetic field to be processed described axle.The method of magnetic control arc machining shaft of the present invention improves machining accuracy and the efficiency of axle.
Description
Technical field
The present invention relates to a kind of processing method of axial workpiece, be specifically related to a kind of method of magnetic control arc machining shaft.
Background technology
In machining, two class parts are difficult to processing: major axis and hard fragility difficult-to-machine material axle.(1) longaxones parts, itself is also uncomplicated, but because itself poor rigidity or hardness are large, because the impacts such as cutting force, gravity, heat in metal cutting easily occur bending and deformation during turning, produce the defects such as vibration, tapering, dolioform and laemodipodiform, be difficult to ensure machining accuracy, or difficult-to-machine material, working (machining) efficiency is low, and its precision and technical requirement are very high, so need a large amount of annexes to make aiding support frame, increase the workload of operator and consume a large amount of muscle power.Make auxiliary member and also will spend sizable manpower financial capacity, add frock expense.Process according to processing process, in process, all may produce vibration at any time, directly have influence on the service life of lathe tool, cause and collapse cutter, knife phenomenon, may have influence on allowance for finish inadequate, so process velocity can not be very fast, efficiency is lower.(2) special hard fragility difficult-to-machine material axial workpiece, due to the particularity of its material, not only proposes very high requirement to cutter, and proposes very high requirement to the technique of processing, thus serious its working (machining) efficiency of restriction.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Tool in Cutting power of avoiding makes axle produce the method for the magnetic control arc machining shaft of the machining accuracy of deformation effect axle.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
A kind of method of magnetic control arc machining shaft, operated by a kind of device of magnetic control arc machining shaft, this device comprises processing platform, rotating the arc generation device, described processing platform comprises electrode bracket, guide rail and fixture, described fixture is positioned at the top of described guide rail, for fixing axle to be processed, described electrode bracket is positioned on described guide rail, for laying described rotating the arc generation device, described rotating the arc generation device comprises drum electrode, magnetic core, conductive coil and stainless steel cap, the shape and size of described magnetic core and the shape and size of described drum electrode match, described magnetic core is sleeved on the outer surface of described drum electrode or is positioned at the upper of described drum electrode, lower two ends, a layer insulating is provided with between described magnetic core and described electrode, described conductive coil is wrapped on described magnetic core, axle to be processed is positioned at the inside of described drum electrode, described stainless steel cap is positioned at the top of described drum electrode, the center of described stainless steel cap is provided with a circular hole, the size of described circular hole and the size of described axle match, plural inclined hole is evenly distributed with around described circular hole, stainless steel casing is provided with at the outer surface of the conductive coil of described rotating the arc generation device, described stainless steel casing is provided with water-cooled entrance and water-cooled outlet, the method comprises,
Step one: be fixed on the described fixture of described processing platform by axle to be processed, makes described axle be in the state naturally drooped;
Step 2: be fixed on the described electrode bracket of described processing platform by described rotating the arc generation device, drives described electrode bracket to drive described rotating the arc generation device on described guide rail, move to the bottom of described axle;
Step 3: the described conductive coil of described rotating the arc generation device is connected field power supply, forms longitudinal magnetic field in the inside of the described drum electrode of described rotating the arc generation device;
Step 4: described drum electrode and described axle are linked into respectively on two electrodes of arc power, form electric arc, drive the electrode bracket of described processing platform, the axial direction of described rotating the arc generation device along described guide rail to described axle moves, make described axle enter the inside of described drum electrode by the circular hole in described stainless steel cap, electric arc rotates under the influence of a magnetic field to be processed described axle.
In the process of processing described axle, inert gas is passed into from the inclined hole of described stainless steel cap the inside of described drum electrode, described inert gas forms swirling eddy in the inside of described drum electrode, promotes electric arc processes.
Described water-cooled entrance and water-cooled outlet are used for circulating water flow, cooling electric coil, magnetic core and drum electrode, and stainless steel casing plays the effect of armoured magnetic field simultaneously.
In the process of processing described axle, pass into current, cool conductive coil, magnetic core and drum electrode at the water-cooled entrance of stainless steel casing, after cooling, current flow out from the water-cooled outlet of stainless steel casing.
Described electrode bracket makes drum electrode at the uniform velocity move along the axial direction of described axle, and rate travel is corresponding to described axle galvanic corrosion amount with electric arc.
A kind of principle of magnetic control arc machining shaft is: this process technology mainly applies arc-plasma high temperature high energy and plasma is subject to these two principles of Lorentz force in magnetic field.Just longitudinal magnetic field can be produced to the conductive coil energising outside drum electrode, the effect of the magnetic core be wound around by conductive coil strengthens magnetic field (magnetic field that conductive coil directly produces is more weak, in energized conductor coil, binding iron core can strengthen magnetic field intensity greatly, if magnetic field is too weak, electric arc then can not be made to rotate, cannot process), drum electrode and the described axle of energising can discharge, and produce electric arc.The electric arc that drum electrode and described axial discharge produce under the effect of longitudinal magnetic field is by High Rotation Speed, this is because, under the effect of longitudinal magnetic field, in electric arc, charged particle is by Lorentz force action, makes it the result producing rotary motion.The motion of charged particle in uniform magnetic field is made up of two parts: along magnetic induction line linear uniform motion and the uniform circular motion around magnetic induction line, and therefore two kinds of motions are superposed to spin along magnetic induction line and move.Charged particle increases further along direction of an electric field movement velocity, improves ablation speed.
In the process that described axle is processed; inert gas is passed into from the inclined hole of stainless steel case lid the inside of drum electrode; the inclined hole that stainless steel case covers makes the inert gas passed into form swirling eddy; promote the processing of electric arc; inert gas is protected workpiece and cools simultaneously; prevent workpiece to be oxidized, improve crudy.In addition, pass into current at the water-cooled entrance of stainless steel casing, conductive coil, magnetic core, electrode and described axle are cooled, prevents high-temperature oxydation.
The invention has the beneficial effects as follows: use that the apparatus structure of a kind of magnetic control arc machining shaft of the present invention is simple, low cost of manufacture; The method of the magnetic control arc machining shaft simultaneously improves machining accuracy and the efficiency of axle.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device of a kind of magnetic control arc machining shaft of the present invention;
Fig. 2 a is that the rotating the arc in the first magnetic control arc machining shaft method of the present invention produces schematic diagram;
Fig. 2 b is that the rotating the arc in the present invention second magnetic control arc machining shaft method produces schematic diagram;
Fig. 3 is the stainless steel cap structural representation of the rotating the arc generation device of the device of a kind of magnetic control arc machining shaft of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows:
1, rotating the arc generation device; 101, drum electrode; 102, magnetic core; 103, conductive coil; 104, stainless steel cap; 105, stainless steel casing; 106, water-cooled entrance; 107, water-cooled outlet; 2 processing platforms; 201, electrode bracket; 202, guide rail; 203, fixture; 3, axle.
Detailed description of the invention
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of device of magnetic control arc machining shaft, comprise rotating the arc generation device 1, described rotating the arc generation device 1 comprises drum electrode 101, magnetic core 102, conductive coil 103, the shape and size of described magnetic core 102 and the shape and size of drum electrode 101 match, described magnetic core 102 is sleeved on the outer surface of described drum electrode 101, a layer insulating is provided with between the face that described magnetic core 102 contacts with described drum electrode 101, described conductive coil 103 is wrapped on described magnetic core 102, described rotating the arc generation device 1 also comprises stainless steel cap 104, described stainless steel cap 104 is positioned at the top of described drum electrode 101, one deck stainless steel casing 105 is provided with on the surface of described conductive coil 103, described stainless steel casing 105 is provided with water-cooled entrance 106 and water-cooled outlet 107, the device of a kind of magnetic control arc machining shaft of the present invention also comprises processing platform 2, described processing platform 2 comprises electrode bracket 201, guide rail 202, fixture 203, described fixture 203 is positioned at the top of guide rail 202, for fixing axle 3 to be processed, described electrode bracket 201 is positioned on guide rail 202, for laying described rotating the arc generation device 1, electrode bracket 201 is moved on guide rail 202 by the form driving of leading screw or worm and gear.
Fig. 2 a is that in the method for the first magnetic control arc machining shaft of the present invention, rotating the arc produces schematic diagram, the shape and size of described magnetic core 102 and the shape and size of drum electrode 101 match, described magnetic core 102 is sleeved on the outer surface of described drum electrode 101, magnetic core 102 is connected the magnetic field formed after field power supply as shown in Figure 2 a with conductive coil 103, from electromagnetic induction principle, the magnetic direction formed at drum electrode 101 position place near described axle 3 straight up.
Fig. 2 b is that in the method for the second magnetic control arc machining shaft of the present invention, rotating the arc produces schematic diagram, the shape and size of described magnetic core 102 and the shape and size of drum electrode 101 match, described magnetic core 102 is positioned at the upper/lower terminal of described drum electrode 101, magnetic core 102 is connected the magnetic field formed after field power supply as shown in Figure 2 b with conductive coil 103, from electromagnetic induction principle, the magnetic direction formed at drum electrode 101 position place near described axle 3 straight up.
No matter be the outer surface that magnetic core 102 is sleeved on drum electrode 101, be still positioned at the upper/lower terminal of drum electrode 101, the magnetic direction formed at drum electrode 101 position place near described axle 3 is vertical direction.
Electric arc is produced after described axle 3 and drum electrode 101 connect arc power, conductive coil 103 produces above-mentioned magnetic field straight up after connecting field power supply, the motion of charged particle in electric arc in uniform magnetic field is made up of two parts: along magnetic induction line linear uniform motion and the uniform circular motion around magnetic induction line, and therefore two kinds of motions are superposed to spin along magnetic induction line and move.The electric arc produced after axle 3 described above and drum electrode 101 connect arc power is under the effect in magnetic field straight up, in electric arc, charged particle is by Lorentz force action, makes it to produce rotary motion, along with charging particle movement speed increases further, improve ablation speed, complete working angles.
Fig. 3 is the stainless steel cap structural representation of the rotating the arc generation device of the device of a kind of magnetic control arc machining shaft of the present invention, the center of described stainless steel cap 104 is provided with a circular hole, the size of described circular hole and the size of described axle match, around described circular hole, be evenly distributed with two or more inclined hole.
A method for magnetic control arc machining shaft, comprises the following steps:
First axle 3 to be processed is fixed on the fixture 203 on processing platform top, makes described axle 3 be in the state naturally drooped; Then rotating the arc generation device 1 is fixed on the electrode bracket 201 of described processing platform 2, utilizes leading screw or worm and gear to drive described electrode bracket 201 to move on guide rail 202.Electrode bracket 201 driven rotary voltaic arc generating device 1 moves to the bottom of described axle 3 on guide rail 202; Then magnetic core 102 and conductive coil 103 are connected field power supply, form longitudinal magnetic field in the inside of drum electrode 101; Finally drum electrode 101 and described axle 3 are linked on two electrodes of arc power respectively, form electric arc, leading screw or worm and gear drive electrode bracket 201, leading screw or worm and gear slowly rise on guide rail 202 with constant rate of speed drive electrode bracket 201, described rotating the arc generation device 1 moves along the axial direction of described axle 3, make described axle 3 be entered the inside of drum electrode 101 by the circular hole in stainless steel cap 104, electric arc rotates under the influence of a magnetic field to be processed described axle 3.
In the process of processing described axle 3, inert gas is passed into from the inclined hole of stainless steel case lid 104 inside of drum electrode 101, described inert gas forms swirling eddy in the inside of drum electrode 101, promotes electric arc processes.In the process that described axle 3 is processed, current are passed at water-cooled entrance 106 place of stainless steel casing 105, enter 3 to conductive coil 103, magnetic core 102, drum electrode 101 and described axle to cool, after cooling, current export 107 from the water-cooled of stainless steel casing 105 and flow out.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the method for a magnetic control arc machining shaft, operated by a kind of device of magnetic control arc machining shaft, this device comprises processing platform, rotating the arc generation device, described processing platform comprises electrode bracket, guide rail and fixture, described fixture is positioned at the top of described guide rail, for fixing axle to be processed, described electrode bracket is positioned on described guide rail, for laying described rotating the arc generation device, described rotating the arc generation device comprises drum electrode, magnetic core, conductive coil and stainless steel cap, the shape and size of described magnetic core and the shape and size of described drum electrode match, described magnetic core is sleeved on the outer surface of described drum electrode or is positioned at the upper of described drum electrode, lower two ends, a layer insulating is provided with between described magnetic core and described electrode, described conductive coil is wrapped on described magnetic core, axle to be processed is positioned at the inside of described drum electrode, described stainless steel cap is positioned at the top of described drum electrode, the center of described stainless steel cap is provided with a circular hole, the size of described circular hole and the size of described axle match, plural inclined hole is evenly distributed with around described circular hole, stainless steel casing is provided with at the outer surface of the conductive coil of described rotating the arc generation device, described stainless steel casing is provided with water-cooled entrance and water-cooled outlet, it is characterized in that: the method comprises,
Step one: be fixed on the described fixture of described processing platform by axle to be processed, makes described axle be in the state naturally drooped;
Step 2: be fixed on the described electrode bracket of described processing platform by described rotating the arc generation device, drives described electrode bracket to drive described rotating the arc generation device on described guide rail, move to the bottom of described axle;
Step 3: the described conductive coil of described rotating the arc generation device is connected field power supply, forms longitudinal magnetic field in the inside of the described drum electrode of described rotating the arc generation device;
Step 4: described drum electrode and described axle are linked into respectively on two electrodes of arc power, form electric arc, drive the electrode bracket of described processing platform, the axial direction of described rotating the arc generation device along described guide rail to described axle moves, make described axle enter the inside of described drum electrode by the circular hole in described stainless steel cap, electric arc rotates under the influence of a magnetic field to be processed described axle.
2. the method for a kind of magnetic control arc machining shaft according to claim 1, it is characterized in that: in the process that described axle is processed, inert gas is passed into from the inclined hole of stainless steel case lid the inside of drum electrode, described inert gas forms swirling eddy in the inside of described drum electrode, promotes electric arc processes.
3. the method for a kind of magnetic control arc machining shaft according to claim 1 and 2, is characterized in that: in the process of processing described axle, passes into current, cool conductive coil, magnetic core and drum electrode at the water-cooled entrance of stainless steel casing.
4. the method for a kind of magnetic control arc machining shaft according to claim 1 and 2, is characterized in that: described electrode bracket makes drum electrode at the uniform velocity move along the axial direction of described axle, and rate travel is corresponding to described axle galvanic corrosion amount with electric arc.
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|---|---|---|---|---|
| CN103692033B (en) * | 2013-12-10 | 2016-01-13 | 无锡微研有限公司 | Reverse taper holes magnetic control electric discharge machining apparatus and method |
| CN103706904B (en) * | 2013-12-10 | 2016-04-20 | 无锡微研有限公司 | Through-hole inner surface magnetic control electric discharge machining apparatus and method |
| CN104470186B (en) * | 2014-12-11 | 2017-06-13 | 中国航天空气动力技术研究院 | High current low fever loses arc-shaped electrode |
| CN105598597A (en) * | 2016-03-04 | 2016-05-25 | 北方工业大学 | High-efficient electric arc machining platform of supplementary electromagnetic excitation modulation of rotatory ultrasonic vibration |
| CN110576239A (en) * | 2019-09-11 | 2019-12-17 | 清华大学 | Arc milling device and method for rotating arc |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU596392A1 (en) * | 1975-12-30 | 1978-03-05 | Украинский Заочный Политехнический Институт | Apparatus for welding with magnetically controlled arc |
| US4668853A (en) * | 1985-10-31 | 1987-05-26 | Westinghouse Electric Corp. | Arc-heated plasma lance |
| CN1179694A (en) * | 1996-10-15 | 1998-04-22 | 石家庄开发区冀科院机电一体化中试基地 | Method and apparatus for heating metal parts by magneto-controlling arc plasma |
| CN2917907Y (en) * | 2006-06-30 | 2007-07-04 | 北京工业大学 | Rotating magnetic field generating device for controlling welding arc |
| CN101032788A (en) * | 2007-04-28 | 2007-09-12 | 罗键 | Consumable electrode surfacing method of electromagnetic complex field, and the device and extension application thereof |
| CN101363115A (en) * | 2008-03-21 | 2009-02-11 | 中国科学院金属研究所 | Arc source of rotary magnetron arc ion plating |
| CN102837092A (en) * | 2012-09-25 | 2012-12-26 | 烟台大学 | Rotary-arc coupling discharging milling device |
| CN103128422A (en) * | 2013-01-28 | 2013-06-05 | 哈尔滨工业大学 | Device and method for magnetic control of wet process underwater welding |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3104701B1 (en) * | 1999-08-18 | 2000-10-30 | 日新電機株式会社 | Arc evaporation source |
-
2013
- 2013-06-08 CN CN201310228848.5A patent/CN103317207B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU596392A1 (en) * | 1975-12-30 | 1978-03-05 | Украинский Заочный Политехнический Институт | Apparatus for welding with magnetically controlled arc |
| US4668853A (en) * | 1985-10-31 | 1987-05-26 | Westinghouse Electric Corp. | Arc-heated plasma lance |
| CN1179694A (en) * | 1996-10-15 | 1998-04-22 | 石家庄开发区冀科院机电一体化中试基地 | Method and apparatus for heating metal parts by magneto-controlling arc plasma |
| CN2917907Y (en) * | 2006-06-30 | 2007-07-04 | 北京工业大学 | Rotating magnetic field generating device for controlling welding arc |
| CN101032788A (en) * | 2007-04-28 | 2007-09-12 | 罗键 | Consumable electrode surfacing method of electromagnetic complex field, and the device and extension application thereof |
| CN101363115A (en) * | 2008-03-21 | 2009-02-11 | 中国科学院金属研究所 | Arc source of rotary magnetron arc ion plating |
| CN102837092A (en) * | 2012-09-25 | 2012-12-26 | 烟台大学 | Rotary-arc coupling discharging milling device |
| CN103128422A (en) * | 2013-01-28 | 2013-06-05 | 哈尔滨工业大学 | Device and method for magnetic control of wet process underwater welding |
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