CN103317207A - Magnetic-control arc shaft processing device and method - Google Patents
Magnetic-control arc shaft processing device and method Download PDFInfo
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- CN103317207A CN103317207A CN2013102288485A CN201310228848A CN103317207A CN 103317207 A CN103317207 A CN 103317207A CN 2013102288485 A CN2013102288485 A CN 2013102288485A CN 201310228848 A CN201310228848 A CN 201310228848A CN 103317207 A CN103317207 A CN 103317207A
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Abstract
The invention relates to a magnetic-control arc shaft processing device. The magnetic-control arc shaft processing device comprises a rotating arc generation device, the rotating arc generation device comprises an electrode, a magnetic core and a conductive coil, the electrode is of a cylindrical shape, the shape and the size of the magnetic core are matched with those of the cylindrical electrode, the magnetic core is sleeved outside the outer surface of the electrode or arranged at an upper end and an lower end of the electrode, an insulating layer is arranged between the magnetic core and the electrode, the conductive coil wraps the magnetic core, a shaft is arranged inside the cylindrical electrode. The conductive coil outside the cylindrical electrode is powered on to generate a longitudinal magnetic field, the powered-on cylindrical electrode and the shaft can discharge to generate arcs, charged particles in the arcs can rotate at high speed under the action of the longitudinal magnetic field, and processing is performed on a shaft. The magnetic-control arc shaft processing device is simple in structure and low in manufacturing cost; meanwhile, the magnetic-control arc shaft processing method improves the processing precision and efficiency of the shaft.
Description
Technical field
The present invention relates to a kind of processing unit (plant) and method of axial workpiece, be specifically related to a kind of device and 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, during turning because the impacts such as cutting force, gravity, heat in metal cutting easily occur bending and deformation the defectives such as generation vibration, tapering, dolioform and laemodipodiform, be difficult to guarantee machining accuracy, perhaps difficult-to-machine material, working (machining) efficiency is low, and its precision and specification requirement are very high, so need a large amount of annexes to make the aiding support frame, increase operator's workload and consume a large amount of muscle power.Make auxiliary member and also will spend sizable manpower financial capacity, increased the 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, efficient is lower.(2) special hard fragility difficult-to-machine material axial workpiece, because the particularity of its material has not only proposed very high requirement to cutter, and the very high requirement of technique proposition to processing, thereby seriously restrict its working (machining) efficiency.
Summary of the invention
Technical problem to be solved by this invention provides a kind of Tool in Cutting power of avoiding makes axle produce the device and method of 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 device of magnetic control arc machining shaft, comprise the rotating the arc generation device, described rotating the arc generation device comprises electrode, magnetic core, conductive coil, described electrode is cylindric, the shape and size of described magnetic core and the shape and size of drum electrode are complementary, described magnetic core is sleeved on the outer surface of described electrode or is positioned at the upper of described electrode, lower two ends, be provided with a layer insulating between described magnetic core and the described electrode, described conductive coil is wrapped on the described magnetic core, and described axle is positioned at the inside of described drum electrode.
Described rotating the arc generation device also comprises the stainless steel cap, described stainless steel cap is positioned at the top of described electrode cylindraceous, 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 are complementary, and are evenly distributed with two or more inclined holes around described circular hole.
Surface at the conductive coil of described rotating the arc generation device is provided with stainless steel casing, described stainless steel casing is provided with water-cooled entrance and water-cooled outlet, described water-cooled entrance and water-cooled outlet are used for circulating water flow, cooling electric coil, magnetic core and electrode, stainless steel casing plays the effect of armoured magnetic field simultaneously.
The device of a kind of magnetic control arc machining shaft of the present invention also comprises processing platform, described processing platform comprises anchor clamps, guide rail, electrode bracket, and described anchor clamps are positioned at the top of guide rail, is used for fixing described axle, described electrode bracket is positioned on the guide rail, is used for laying described rotating the arc generation device.
A kind of device that utilizes magnetic control arc machining shaft described above carries out the method for magnetic control arc machining shaft, comprises,
Step 1: described axle is fixed on the anchor clamps of described processing platform, makes described axle be in the state that naturally droops;
Step 2: described rotating the arc generation device is fixed on the electrode bracket of described processing platform, drives described electrode bracket and drive described rotating the arc generation device moves to described axle at described guide rail bottom;
Step 3: the conductive coil of described rotating the arc generation device is connected field power supply, 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 the stainless steel cap, electric arc rotates under the effect in magnetic field to be processed described axle.
In the process to described axle processing, inert gas is passed into the inside of drum electrode from the inclined hole of stainless steel case lid, described inert gas forms swirling eddy in the inside of drum electrode, promotes electric arc processes.
In the process to the processing of described axle, pass into current at the water-cooled entrance of stainless steel casing, conductive coil, magnetic core and electrode to be cooled off, after the cooling, the outlet of the water-cooled of current stainless steel casing is flowed out.
Described hoistable platform makes drum electrode at the uniform velocity mobile 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 has mainly used arc-plasma high temperature high energy and plasma is subjected to these two principles of Lorentz force in magnetic field.The conductive coil energising outer to drum electrode just can produce longitudinal magnetic field, the effect of the magnetic core that is twined by conductive coil be strengthen magnetic field (magnetic field that conductive coil directly produces a little less than, the binding iron core can strengthen magnetic field intensity greatly in the energising conductive coil, if magnetic field too a little less than, then can not make the electric arc rotation, can't process), the drum electrode of energising and described axle 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 High Rotation Speed, this be because, under the effect of longitudinal magnetic field, charged particle is subjected to Lorentz force action in the electric arc, makes it to produce the result who rotatablely moves.The motion of charged particle in uniform magnetic field is comprised of two parts: along the magnetic induction line linear uniform motion with around the uniform circular motion of magnetic induction line, therefore two kinds of motions are superposed to spin along magnetic induction line and move.Charged particle further increases along the direction of an electric field movement velocity, improves ablation speed.
In the process to described axle processing; inert gas is passed into the inside of drum electrode from the inclined hole of stainless steel case lid; the inclined hole that stainless steel case covers is so that the inert gas that passes into forms swirling eddy; promote the processing of electric arc; inert gas is protected workpiece and is cooled off simultaneously; prevent the workpiece oxidation, 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 off, prevent high-temperature oxydation.
The invention has the beneficial effects as follows: use the apparatus structure of a kind of magnetic control arc machining shaft of the present invention simple, low cost of manufacture; The method of described magnetic control arc machining shaft has improved machining accuracy and the efficient of axle simultaneously.
Description of drawings
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's the second magnetic control arc machining shaft method produces schematic diagram;
Fig. 3 is the stainless steel cap structural representation of rotating the arc generation device of the device of a kind of magnetic control arc machining shaft of the present invention.
In the accompanying drawing, the list of parts of each label representative is as follows:
1, rotating the arc generation device; 101, 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, anchor clamps; 3, axle.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present invention and feature are described, institute gives an actual example and only is used for explaining the present invention, is not be used to limiting 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 electrode 101, magnetic core 102, conductive coil 103, described electrode 101 is cylindric, the shape and size of the shape and size of described magnetic core 102 and drum electrode 101 are complementary, described magnetic core 102 is sleeved on the outer surface of described electrode 101, be provided with a layer insulating between 101 contacted at described magnetic core 102 and the described electrode, described conductive coil 103 is wrapped on the 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 electrode cylindraceous 101, be provided with one deck stainless steel casing 105 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, anchor clamps 203, described anchor clamps 203 are positioned at the top of guide rail 202, be used for fixing described axle 3, described electrode bracket 201 is positioned on the guide rail 202, be used for laying described rotating the arc generation device 1, electrode bracket 201 drives at guide rail 202 mobile by the form of leading screw or worm and gear.
Fig. 2 a is that rotating the arc produces schematic diagram in the method for the first magnetic control arc machining shaft of the present invention, the shape and size of the shape and size of described magnetic core 102 and drum electrode 101 are complementary, described magnetic core 102 is sleeved on the outer surface of described electrode 101, magnetic core 102 is connected with conductive coil and is connected the magnetic field that forms behind the field power supply shown in Fig. 2 a, by electromagnetic induction principle as can be known, near the magnetic direction that forms at place, electrode 101 positions the described axle 3 straight up.
Fig. 2 b is that rotating the arc produces schematic diagram in the method for the second magnetic control arc machining shaft of the present invention, the shape and size of the shape and size of described magnetic core 102 and drum electrode 101 are complementary, described magnetic core 102 is positioned at the upper/lower terminal of described drum electrode 101, magnetic core 102 is connected with conductive coil and is connected the magnetic field that forms behind the field power supply shown in Fig. 2 b, by electromagnetic induction principle as can be known, near the magnetic direction that forms at place, electrode 101 positions the described axle 3 straight up.
No matter be the outer surface that magnetic core 102 is sleeved on drum electrode 101, still be positioned at the upper/lower terminal of drum electrode 101, near the magnetic direction that forms at place, electrode 101 positions the described axle 3 is vertical direction.
After connecting arc power, described axle 3 and drum electrode 101 produce electric arc, conductive coil 103 produces above-mentioned magnetic field straight up after connecting field power supply, the motion of charged particle in the electric arc in uniform magnetic field is comprised of two parts: along the magnetic induction line linear uniform motion with around the uniform circular motion of magnetic induction line, therefore two kinds of motions are superposed to spin along magnetic induction line and move.Axle 6 described above and drum electrode 101 connect the electric arc that produces behind the arc power under the effect in straight up magnetic field, charged particle is subjected to Lorentz force action in the electric arc, makes it to produce to rotatablely move, along with charging particle movement speed further increases, improve ablation speed, finish working angles.
Fig. 3 is the stainless steel cap structural representation of 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 are complementary, and are evenly distributed with two or more inclined holes around described circular hole.
A kind of method of magnetic control arc machining shaft may further comprise the steps:
At first described axle 6 is fixed on the anchor clamps 203 on processing platform top, makes described axle 3 be in the state that naturally droops; 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 mobile at guide rail 202.Electrode bracket 201 driven rotary voltaic arc generating devices 1 move to the bottom of described axle 3 at 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; At last drum electrode 101 and described axle 3 are linked into respectively on two electrodes of arc power, form electric arc, leading screw or worm and gear drive electrode carriage 201, leading screw or worm and gear slowly rise on guide rail 202 with constant rate of speed drive electrode carriage 201, described rotating the arc generation device 1 moves along the axial direction of described axle 3, make described axle 6 enter the inside of drum electrode 101 by the circular hole in the stainless steel cap 104, electric arc rotates under the effect in magnetic field to be processed described axle 3.
In the process to described axle 3 processing, inert gas is passed into the inside of drum electrode 101 from the inclined hole of stainless steel case lid 104, described inert gas forms swirling eddy in the inside of drum electrode 101, promotes electric arc processes.In the process to described axle 3 processing, water-cooled entrance 106 places at stainless steel casing 105 pass into current, conductive coil 103, magnetic core 102, electrode 101 and described axle are advanced 3 cool off, after the cooling, current export 107 outflows from the water-cooled of stainless steel casing 105.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the device of a magnetic control arc machining shaft, it is characterized in that: comprise the rotating the arc generation device, described rotating the arc generation device comprises electrode, magnetic core, conductive coil, described electrode is cylindric, the shape and size of described magnetic core and the shape and size of described drum electrode are complementary, described magnetic core is sleeved on the outer surface of described electrode or is positioned at the upper/lower terminal of described electrode, be provided with a layer insulating between described magnetic core and the described electrode, described conductive coil is wrapped on the described magnetic core, and described axle is positioned at the inside of described drum electrode.
2. the device of a kind of magnetic control arc machining shaft according to claim 1, it is characterized in that: described rotating the arc generation device also comprises the stainless steel cap, 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 are complementary, and are evenly distributed with two or more inclined holes around described circular hole.
3. the device of a kind of magnetic control arc machining shaft according to claim 1 and 2 is characterized in that: the outer surface at the conductive coil of described rotating the arc generation device is provided with stainless steel casing, and described stainless steel casing is provided with water-cooled entrance and water-cooled outlet.
4. the device of a kind of magnetic control arc machining shaft according to claim 3, it is characterized in that: also comprise processing platform, described processing platform comprises anchor clamps, guide rail, electrode bracket, described anchor clamps are positioned at the top of described guide rail, be used for fixing described axle, described electrode bracket is positioned on the described guide rail, is used for laying described rotating the arc generation device.
5. the device with the magnetic control arc machining shaft described in the claim 4 carries out the method for magnetic control arc machining shaft, it is characterized in that: comprise,
Step 1: described axle is fixed on the anchor clamps of described processing platform, makes described axle be in the state that naturally droops;
Step 2: described rotating the arc generation device is fixed on the electrode bracket of described processing platform, drives described electrode bracket and drive described rotating the arc generation device moves to described axle at described guide rail bottom;
Step 3: the conductive coil of described rotating the arc generation device is connected field power supply, 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 the stainless steel cap, electric arc rotates under the effect in magnetic field to be processed described axle.
6. the method for a kind of magnetic control arc machining shaft according to claim 4, it is characterized in that: in the process to described axle processing, inert gas is passed into the inside of drum electrode from the inclined hole of stainless steel case lid, described inert gas forms swirling eddy in the inside of drum electrode, promotes electric arc processes.
7. according to claim 5 or the method for 6 described a kind of magnetic control arc machining shafts, it is characterized in that: in the process to described axle processing, pass into current at the water-cooled entrance of stainless steel casing, conductive coil, magnetic core and electrode are cooled off.
8. according to claim 5 or the method for 6 described a kind of magnetic control arc machining shafts, it is characterized in that: described hoistable platform makes drum electrode at the uniform velocity mobile 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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| CN201310228848.5A CN103317207B (en) | 2013-06-08 | 2013-06-08 | A kind of method of magnetic control arc machining shaft |
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| CN201310228848.5A CN103317207B (en) | 2013-06-08 | 2013-06-08 | A kind of method of magnetic control arc machining shaft |
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| CN103317207B CN103317207B (en) | 2016-03-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103692033A (en) * | 2013-12-10 | 2014-04-02 | 无锡微研有限公司 | Device and method for magnetic control electric spark processing of back taper hole |
| CN103706904A (en) * | 2013-12-10 | 2014-04-09 | 无锡微研有限公司 | Device capable of processing magnetic control electric spark on internal surface of through hole and method thereof |
| CN104470186A (en) * | 2014-12-11 | 2015-03-25 | 中国航天空气动力技术研究院 | Large-current low-ablation arc 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 |
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| CN110576239A (en) * | 2019-09-11 | 2019-12-17 | 清华大学 | Arc milling device and method for rotating arc |
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