CN103264320A - Method and device for realizing large current and high rotation speed electric conduction - Google Patents
Method and device for realizing large current and high rotation speed electric conduction Download PDFInfo
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- CN103264320A CN103264320A CN2013101256557A CN201310125655A CN103264320A CN 103264320 A CN103264320 A CN 103264320A CN 2013101256557 A CN2013101256557 A CN 2013101256557A CN 201310125655 A CN201310125655 A CN 201310125655A CN 103264320 A CN103264320 A CN 103264320A
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- conducting ring
- shaft coupling
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Abstract
The invention discloses a method and a device for realizing large current high rotation speed electric conduction. A plurality of same conducting rings are connected in series through couplers, so that conducting ring rotors are connected with a high-speed coupler, stators are connected with a low-speed coupler, meanwhile, rotating speed of each coupler is distributed by utilizing a belt wheel transmission device, relative rotating speeds of each conducting ring rotor and each stator are equal, and the continuous power supply provided by the low-speed conducting rings for large current and high rotation speed rotating equipment with the rotation speed being multiple times of rated relative rotation speed of the rotors and the stators is realized. The device is used for electrolytic grinding, the rotation speed of an electric conduction grinding wheel can be improved, sufficient supplying and quick alternating of electrolyte in an electrolysis interval can be realized, mechanical grinding function is improved, high rotation speed and high accuracy of an electric main shaft in electrolytic grinding are ensured, and the production efficiency and the processing quality of electrolytic grinding are greatly improved.
Description
Technical field
The present invention relates to a kind of method and device thereof of realizing the high rotating speed conduction of big electric current, be particularly useful for the conduction of conductive abrasive wheel in the electrochemical grinding.
Background technology
Electrochemical grinding is in conjunction with electrolysis and a kind of combined machining method of mechanical grinding effect, it has higher precision and surface quality than Electrolyzed Processing, than mechanical grinding higher efficient and stability are arranged, and the abrasion of grinding wheel amount is little, is applicable to the conductive metallic material of difficult grindings such as the various high strength of grinding, high rigidity, thermal sensitivity, fragility.Add man-hour, conductive abrasive wheel (tool cathode) connects the negative pole of dc source, workpiece (workpiece anode) connects the positive pole of dc source, electric current forms path by electrolyte stream to conductive abrasive wheel from workpiece, the metal of surface of the work is oxidized to one deck anodic passivity film as thin as a wafer under the effect of electric current and electrolyte, and this layer anodic passivity film can be ground off by the abrasive material in the conductive abrasive wheel rapidly, also continues by electrolysis thereby expose new metal at surface of the work.Like this, metal is processed continuously under the alternating action of electrolysis and mechanical grinding, until reaching certain dimensional accuracy and surface roughness.
In the electrochemical grinding process, conductive abrasive wheel also will lead to very big electric current in rotation, and all the time, the conduction of emery wheel is mostly directly used carbon brush or conducting ring.Yet, the electrolyte supply fully, alternately improves mechanical grinding efficient rapidly, simultaneously in the electrolysis gap because increase conductive abrasive wheel rotating speed can make, productivity ratio is improved, therefore the speed of conductive abrasive wheel is improving gradually, particularly high-speed electric main shaft is used in electrochemical grinding, make the rotating speed of conductive abrasive wheel improve greatly, the conducting ring on the market or carbon brush more and more do not satisfy the demand of electrochemical grinding processing.The rated current of conducting ring and rated speed are negative correlation, guaranteeing under the conducting ring prerequisite in service life, its rated speed of conducting ring that rated current is high does not reach the processing request of electrochemical grinding, and the requirement that high its rated current of conducting ring of rated speed does not reach electrochemical grinding.
Summary of the invention
The technical problem to be solved in the present invention is that at present the big high rotating speed slewing of electric current is guaranteeing under the conducting ring prerequisite in service life, can not satisfy rated current height, requirement that rated speed is high simultaneously.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of method that realizes the high rotating speed conduction of big electric current with N identical conducting ring series connection, connects by shaft coupling between the adjacent conductive ring; Utilize the belt wheel transmission device to distribute the rotating speed of each shaft coupling, the conducting ring rotor-end is connected with the high speed shaft coupling, and stator terminal is connected with low-speed shaft coupler, and the stator of N conducting ring is all identical with the relative rotation speed of rotor.Conductive abrasive wheel also will lead to very big electric current in the rotation at a high speed, and the rated current of conducting ring and rated speed are negative correlation, the conducting ring rotating speed that rated current is big is not high, the conducting ring rated current that rated speed is high is not high, so conducting ring should be taken all factors into consideration its rated speed and rated current, under the prerequisite that rated current satisfies, choose the high as far as possible conducting ring of rated speed, used conducting ring is made up of rotor and stator, its rotor is connected with the high speed shaft coupling, stator is connected with low-speed shaft coupler, utilize the belt wheel transmission device to distribute the rotating speed of each shaft coupling simultaneously, each conducting ring rotor is equated with the relative rotation speed of stator.
For guaranteeing higher relative rotation speed is arranged, the rotation direction of the workpiece on the rotary table and the direction of rotation of conductive abrasive wheel between workpiece and the conductive abrasive wheel.
A kind of device of realizing the method for the high rotating speed conduction of big electric current comprises dc source, outer cover, conductive unit, Connection Block, retainer, electric main shaft, conductive abrasive wheel and rotary table; Described conductive unit, Connection Block, electric main shaft are arranged in the outer cover from top to bottom in turn, and conductive abrasive wheel and rotary table are positioned at the outer cover outside; Described conductive unit comprises N conducting ring, a N shaft coupling, one group of belt wheel transmission device and a power transmission shaft; Conducting ring, shaft coupling are connected from top to bottom and are arranged at interval, and the head end of this cascaded structure is conducting ring, and tail end is shaft coupling; The stator terminal of the head end conducting ring of cascaded structure connects the negative pole of dc source, and tail end shaft coupling and electric spindle rotor upper end are rigidly connected; Described belt wheel transmission device comprises 2N belt wheel, and a belt wheel is installed on each shaft coupling, and N belt wheel is rigidly attached on the power transmission shaft in addition; Belt wheel setting on the corresponding shaft coupling of belt wheel on power transmission shaft, between aforementioned two corresponding belt wheels that arrange by a belt solderless wrapped connection; N bar belt all keeps level; Each conducting ring periphery arranges one deck retainer in the described outer cover, all is provided with a ceramic bearing between every layer of retainer and the shaft coupling.Described electric main shaft comprises electric spindle rotor and electric main shaft stator, and electric main shaft stator and Connection Block bottom is fixing, and the output of electric spindle rotor one end and aforementioned conductive unit is rigidly connected, and the end cap that the other end stretches out outer cover rubs to take turns with conduction and is connected; Described rotary table top arranges anchor clamps, and the bottom arranges the workbench conducting ring, and the rotor-end of workbench conducting ring is rigidly attached to the rotary table bottom, and stator terminal connects dc power anode.
Described belt wheel pitch diameter satisfies
(N is even number) or
(N is odd number) and, D
I+1D
i, d
I+1＜d
i(i=1,2 ... N), D
iThe pitch diameter of bottom-up i belt wheel on the expression shaft coupling, d
iThe pitch diameter of bottom-up i belt wheel on the expression power transmission shaft.
Described conducting ring number
n
oBe conductive abrasive wheel maximum functional rotating speed, n
rBe conducting ring rotor and the specified relative rotation speed of stator.
Described electric spindle rotor, shaft coupling, conducting ring keep coaxial, and parallel with power transmission shaft.
Advantage of the present invention is: 1. the present invention is connected a plurality of identical conducting rings with shaft coupling, the conducting ring rotor connects the high speed shaft coupling, stator connects low-speed shaft coupler, utilize the belt wheel transmission system to distribute the rotating speed of each shaft coupling simultaneously, each conducting ring rotor is equated with the relative rotation speed of stator, realized the continued power of low speed conducting ring for the conductive abrasive wheel that is several times as much as its rotor and stator rated speed, can make in the electrolysis gap electrolyte supply fully, alternately improve mechanical grinding efficient rapidly, simultaneously, the production efficiency of electrochemical grinding and crudy are improved greatly.2. can adjust the rotating speed of electrochemical grinding conductive abrasive wheel among the present invention by the number of adjusting conducting ring, make the rotating speed of electrochemical grinding conductive abrasive wheel no longer be subject to the rated speed of conducting ring in the market, can bring into play high-speed electric main shaft high rotating speed, high-precision advantage in electrochemical grinding better, expand the engineering of electrochemical grinding and used.
Description of drawings
Fig. 1 is a kind of structural representation of realizing the device of the high rotating speed conduction of big electric current of the present invention.
Fig. 2 is the structural representation that conducting ring of the present invention is connected with shaft coupling.
Fig. 3 is the structural representation of conducting ring of the present invention.
Number in the figure title: 1-electricity spindle rotor; 2-electricity main shaft stator; The 3-Connection Block; The 4-shaft coupling; The 5-ceramic bearing; The 6-belt wheel; The 7-conducting ring; The 8-deep groove ball bearing; The 9-belt; The 10-power transmission shaft; The 11-retainer; The 12-conductive abrasive wheel; The 13-workpiece; The 14-anchor clamps; The 15-rotary table; 16-workbench conducting ring; The 17-end cap; The 18-outer cover; 19-conducting ring rotor; 20-conducting ring stator
The specific embodiment
As Figure 1-3, a kind of method that realizes the high rotating speed conduction of big electric current with 7 series connection of N identical conducting ring, connects by shaft coupling 4 between the adjacent conductive ring 7; Utilize the belt wheel transmission device to distribute the rotating speed of each shaft coupling 4, the conducting ring rotor is connected with high speed shaft coupling 4, and stator is connected with low-speed shaft coupler 4, and N conducting ring 7 stators are all identical with the relative rotation speed of rotor; The rotation direction of the workpiece 13 on the rotary table 15 and the direction of rotation of conductive abrasive wheel 12.
Described conductive abrasive wheel 12 also will lead to bigger electric current in the rotation at a high speed, and its maximum functional is changeed scooter 3000-6000r/min, and operating current is between the 100-250A.Rated current and the rated speed of conducting ring 7 are generally negative correlation, the conducting ring rotating speed that rated current is big is not high, the conducting ring rated current that rated speed is high is not high, the selection of conducting ring 7 must be taken all factors into consideration its rated current and rated speed, selects the high as far as possible conducting ring of rated speed on the basis of satisfying the electric current demand.In conjunction with existing conducting ring in the market, the conducting ring 7 of optional A1H25S model, this kind conducting ring 7 is made up of rotor 19 and stator 20, its rated current is 250A, rotor and stator rated speed are 1200r/min, rotor is connected with the high speed shaft coupling, and stator is connected with low-speed shaft coupler, and the number N of conducting ring 7 is by the maximum functional rotation speed n of conductive abrasive wheel 12
oSpecified relative rotation speed n with conducting ring stator and rotor
rDetermine, satisfy formula
Get final product, N generally gets 2-5 can satisfy processing request, gets 3 in the present embodiment.
A kind of device of realizing the high rotating speed conduction of big electric current comprises dc source, outer cover 18, conductive unit, Connection Block 3, electric main shaft, conductive abrasive wheel 12 and rotary table 15; Described conductive unit, Connection Block 3, electric main shaft are arranged in the outer cover 18 from top to bottom in turn, and conductive abrasive wheel 12 and rotary table 15 are positioned at outer cover 18 outsides; Described conductive unit comprises three conducting rings 7, three shaft couplings 4, one group of belt wheel transmission device and a power transmission shaft 10; Conducting ring 7, shaft coupling 4 are connected from top to bottom and are arranged at interval, and the head end of this cascaded structure is conducting ring 7, and tail end is shaft coupling 4; The stator terminal of the head end conducting ring 7 of cascaded structure connects the negative pole of dc source, and tail end shaft coupling 4 passes Connection Block 3 and connects electric main shaft; Be provided with 3 layers of retainer 11 in the outer cover 18, each layer retainer 11 placed a shaft coupling 4, is provided with ceramic bearing 5 between shaft coupling 4 and the retainer 11; Described belt wheel transmission device comprises 6 belt wheels 6, a belt wheel 6 is installed on each shaft coupling 4, other 3 belt wheels are rigidly attached on the power transmission shaft accordingly, belt wheel on each shaft coupling all with power transmission shaft 10 on belt wheel be connected by belt 9, and belt 9 maintenance levels, each belt wheel pitch diameter satisfies
And D
I+1D
i, d
I+1＜d
i(i=1,2,3), D
iThe pitch diameter of bottom-up i belt wheel on the expression shaft coupling, d
iThe pitch diameter of bottom-up i belt wheel on the expression power transmission shaft; Described electric main shaft comprises electric spindle rotor 1 and electric main shaft stator 2, and electric main shaft stator 2 is fixed with Connection Block 3 bottoms, and the output of electric spindle rotor 1 one ends and aforementioned conductive unit is rigidly connected, and the end cap 17 that the other end stretches out outer cover 18 is connected with conductive abrasive wheel 12; Described rotary table 15 tops arrange anchor clamps 14, and the bottom arranges workbench conducting ring 16, the rotor-end of workbench conducting ring 16 rotary table 15 bottoms that are rigidly connected, and stator terminal connects dc power anode; Electricity spindle rotor 1, shaft coupling 4, conducting ring 7 keep coaxial, and parallel with power transmission shaft 10.
In the electrochemical grinding process, workpiece 13 is rotated counterclockwise under rotary table 15 drives, and conductive abrasive wheel 12 turns clockwise under the drive of electric main shaft, when conductive abrasive wheel 12 rotates with its maximum (top) speed 3000r/min, shaft coupling 4 rotating speeds that are connected with electric main shaft also are 3000r/min, know according to formula
D
3=2d
3, D
2=d
2,
Can calculate, power transmission shaft 10 rotating speeds are 2000r/min, the rotating speed of three shaft couplings is followed successively by 3000r/min, 2000r/min, 1000r/min from bottom to up, then the relative rotation speed of the rotor of three conducting rings 7 and stator is 1000r/min, less than its specified relative rotation speed 1200r/min, stably work so conducting ring 7 is sustainable.To sum up, be that the conducting ring 7 of 1200r/min can realize that the maximum functional rotating speed is the continued power of the conductive abrasive wheel of 3000r/min with rotor and the specified relative rotation speed of stator, in fact, the conducting ring 7 that is 1200r/min by three rated speeds can realize that the maximum functional rotating speed is not higher than the continued power of the conductive abrasive wheel of 3600r/min.
Above-mentioned is the situation that 3 conducting rings are connected, and in the practical engineering application, can select suitable conducting ring according to required electric current and rotating speed, and the number of definite conducting ring.
Claims (6)
1. a method that realizes the high rotating speed conduction of big electric current is characterized in that: with N identical conducting ring series connection, connect by shaft coupling between the adjacent conductive ring; Utilize the belt wheel transmission device to distribute the rotating speed of each shaft coupling, the conducting ring rotor-end is connected with the high speed shaft coupling, and stator terminal is connected with low-speed shaft coupler, and the stator of N conducting ring is all identical with the relative rotation speed of rotor.
2. a kind of method that realizes the high rotating speed conduction of big electric current according to claim 1 is characterized in that: the direction of rotation of the rotation direction of workpiece and conductive abrasive wheel on the rotary table.
3. adopt any described a kind of employed device of method of realizing the high rotating speed conduction of big electric current of claim 1-2, it is characterized in that: comprise dc source, outer cover, conductive unit, Connection Block, retainer, electric main shaft, conductive abrasive wheel and rotary table;
Described conductive unit, Connection Block, electric main shaft are arranged in the outer cover from top to bottom in turn, and conductive abrasive wheel and rotary table are positioned at the outer cover outside;
Described conductive unit comprises N conducting ring, a N shaft coupling, one group of belt wheel transmission device and a power transmission shaft; Conducting ring, shaft coupling are connected from top to bottom and are arranged at interval, and the head end of this cascaded structure is conducting ring, and tail end is shaft coupling; The stator terminal of the head end conducting ring of cascaded structure connects the negative pole of dc source, and tail end shaft coupling and electric spindle rotor upper end are rigidly connected; Described belt wheel transmission device comprises 2N belt wheel, and a belt wheel is installed on each shaft coupling, and N belt wheel is rigidly attached on the power transmission shaft in addition; Belt wheel setting on the corresponding shaft coupling of belt wheel on power transmission shaft, between aforementioned two corresponding belt wheels that arrange by a belt solderless wrapped connection; N bar belt all keeps level;
Each conducting ring periphery arranges one deck retainer in the described outer cover, all is provided with a ceramic bearing between every layer of retainer and the shaft coupling.
Described electric main shaft comprises electric spindle rotor and electric main shaft stator, and electric main shaft stator and Connection Block bottom is fixing, and the output of electric spindle rotor one end and aforementioned conductive unit is rigidly connected, and the end cap that the other end stretches out outer cover rubs to take turns with conduction and is connected;
Described rotary table top arranges anchor clamps, and the bottom arranges the workbench conducting ring, and the rotor-end of workbench conducting ring is rigidly attached to the rotary table bottom, and stator terminal connects dc power anode.
4. a kind of employed device of method of realizing the high rotating speed of big electric current conduction according to claim 3, it is characterized in that: the belt wheel pitch diameter satisfies
(N is even number) or
(N is odd number) and D
I+1＞D
i, d
I+1＜d
i(i=1,2 ... N), D
iThe pitch diameter of bottom-up i belt wheel on the expression shaft coupling, d
iThe pitch diameter of bottom-up i belt wheel on the expression power transmission shaft.
5. according to claim 3 or 4 described a kind of employed devices of method of realizing the high rotating speed conduction of big electric current, it is characterized in that: the conducting ring number
n
oBe conductive abrasive wheel maximum functional rotating speed, n
rBe conducting ring rotor and the specified relative rotation speed of stator.
6. according to claim 3 or 4 described a kind of employed devices of method of realizing the high rotating speed conduction of big electric current, it is characterized in that: electric spindle rotor, shaft coupling, conducting ring keep coaxial, and parallel with power transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310125655.7A CN103264320B (en) | 2013-04-10 | 2013-04-10 | A kind of method and device thereof realizing big current height rotating speed conduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310125655.7A CN103264320B (en) | 2013-04-10 | 2013-04-10 | A kind of method and device thereof realizing big current height rotating speed conduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103264320A true CN103264320A (en) | 2013-08-28 |
| CN103264320B CN103264320B (en) | 2016-04-27 |
Family
ID=49008006
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310125655.7A Expired - Fee Related CN103264320B (en) | 2013-04-10 | 2013-04-10 | A kind of method and device thereof realizing big current height rotating speed conduction |
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|---|---|
| CN (1) | CN103264320B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607729A (en) * | 2014-12-09 | 2015-05-13 | 上海交通大学 | High-speed arc discharge, flushing and rotating main shaft device |
| CN111331905A (en) * | 2020-03-06 | 2020-06-26 | 新乡市先恒机械设备有限公司 | Inclined conveyor with cross joint |
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| JPS57148562A (en) * | 1981-03-07 | 1982-09-13 | Hisao Kimura | Superhigh speed induction motor |
| CN86104464A (en) * | 1986-06-27 | 1988-01-06 | 张敬业 | Electric machine without commutator and variable torque motor |
| CN2367016Y (en) * | 1999-04-23 | 2000-03-01 | 中国科学院南京天文仪器研制中心 | Arrangement for regulating speed of ac motor |
| CN2580663Y (en) * | 2002-11-26 | 2003-10-15 | 王阿宝 | Stator rotation, transmission generator |
| CN2627722Y (en) * | 2003-06-13 | 2004-07-21 | 华中科技大学 | Pole-changing start wound rotor induction motor applying cascade coupling speed control principle |
| CN201298790Y (en) * | 2008-11-24 | 2009-08-26 | 天津甘泉集团有限公司 | High-lift and high-power submergible pump motor |
-
2013
- 2013-04-10 CN CN201310125655.7A patent/CN103264320B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57148562A (en) * | 1981-03-07 | 1982-09-13 | Hisao Kimura | Superhigh speed induction motor |
| CN86104464A (en) * | 1986-06-27 | 1988-01-06 | 张敬业 | Electric machine without commutator and variable torque motor |
| CN2367016Y (en) * | 1999-04-23 | 2000-03-01 | 中国科学院南京天文仪器研制中心 | Arrangement for regulating speed of ac motor |
| CN2580663Y (en) * | 2002-11-26 | 2003-10-15 | 王阿宝 | Stator rotation, transmission generator |
| CN2627722Y (en) * | 2003-06-13 | 2004-07-21 | 华中科技大学 | Pole-changing start wound rotor induction motor applying cascade coupling speed control principle |
| CN201298790Y (en) * | 2008-11-24 | 2009-08-26 | 天津甘泉集团有限公司 | High-lift and high-power submergible pump motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607729A (en) * | 2014-12-09 | 2015-05-13 | 上海交通大学 | High-speed arc discharge, flushing and rotating main shaft device |
| CN104607729B (en) * | 2014-12-09 | 2017-03-22 | 上海交通大学 | High-speed arc discharge, flushing and rotating main shaft device |
| CN111331905A (en) * | 2020-03-06 | 2020-06-26 | 新乡市先恒机械设备有限公司 | Inclined conveyor with cross joint |
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| Publication number | Publication date |
|---|---|
| CN103264320B (en) | 2016-04-27 |
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Granted publication date: 20160427 Termination date: 20200410 |