CN101913087A - Conductive turntable - Google Patents

Conductive turntable Download PDF

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Publication number
CN101913087A
CN101913087A CN 201010248234 CN201010248234A CN101913087A CN 101913087 A CN101913087 A CN 101913087A CN 201010248234 CN201010248234 CN 201010248234 CN 201010248234 A CN201010248234 A CN 201010248234A CN 101913087 A CN101913087 A CN 101913087A
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CN
China
Prior art keywords
turntable
brush
shell
conductive
workbench
Prior art date
Application number
CN 201010248234
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Chinese (zh)
Other versions
CN101913087B (en
Inventor
于德海
陈虎
蔡春刚
张文峰
任志辉
张赞秋
贺行健
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大连光洋科技工程有限公司
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Publication date
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Priority to CN201010248234XA priority Critical patent/CN101913087B/en
Publication of CN101913087A publication Critical patent/CN101913087A/en
Application granted granted Critical
Publication of CN101913087B publication Critical patent/CN101913087B/en

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Abstract

The invention discloses a conductive turntable which comprises a disc-shaped worktable (9) and an external turntable outer shell (1). The worktable (9) is arranged in the center of the upper part of the conductive turntable and driven by a motor, one brush or more brushes (6)arranged at intervals are arranged on the outer circumference of the worktable (9) in a contact mode, each brush (6) is connected to the turntable outer shell (1) through a lead (11), and the turntable outer shell (1) is connected with a machine tool body which is connected to a negative electrode of a power supply in electric spark machining. By mounting the conductive brushes on the periphery of the turntable at intervals, a current generated by the turntable in the working process is directly guided to the turntable outer shell through a conductive protection device instead of a turntable bearing so as to prevent the current from running through the turntable bearing to damage the bearing.

Description

A kind of conductive turntable
Technical field
The present invention relates to a kind of turntable, relate in particular to the processing that is used to discharge and have the turntable that conducting function is protected bearing.
Background technology
Spark machined is the special process method of the galvanic action ablation conductive material that produces when utilizing pulsed discharge between the two poles of the earth be immersed in the working solution, claims discharge processing or galvanic corrosion processing again.Usually workpiece to be processed is clamped on the Work turning table, as an electrode; In the process, another electrode, workpiece to be processed and Work turning table all place electrolyte to realize machining.
Chinese patent CN200710010047.6 discloses a kind of " by the double axle table of AC permanent-magnet synchronous external rotor torque motor driving "; Another Chinese patent CN200710010063.5 discloses a kind of " vertical and horizontal dual-purpose single axle table that AC permanent-magnet synchronous external rotor torque motor drives "; These turntables all can be used as Work turning table, are used in the spark machined.
Problem is, under the prior art, in the spark discharge processing, the electric current turntable bearing of often flowing through causes the damage of turntable bearing.
Summary of the invention
Technical problem to be solved by this invention provides the more safe and reliable turntable of a kind of use, by the conductive protection device is installed on turntable, avoids in the spark machined electric current turntable bearing of flowing through, and causes damage of bearings, guarantees whole turntable operate as normal.
In order to achieve the above object, a kind of conductive turntable of the present invention comprises being positioned at the central upper portion place by motor-driven discoid workbench and outside turntable shell.Wherein, be provided with 1 or brush is set at interval at interval with the way of contact on the peripheral circumferential of described workbench; Each described brush is connected to the turntable shell by lead, and the turntable shell is connected with lathe bed body, and lathe bed body is connected to the negative pole of power supply in the spark machined.Again or each brush be connected to lathe bed body by lead, lathe bed body is connected to the negative pole of power supply in the spark machined.Wherein, above-mentioned " being connected to ", " connection " are meant the annexation that " conduction " is good.
The mode of fixed brush is more, under the optimal way, leans outer rim at described workbench in the outside of each described brush by push rod; The outer end of described push rod is provided with the spring of radially exerting oneself along described workbench; The outer end of described spring is fixed on the lock-screw that is located in the described shell.In addition, for the rotation of anti-throw-out lever, the outer circumference surface of push rod leans locking by upright to the dog screw that is located on the described shell up.
Conductive turntable of the present invention, the drive motors of its workbench is preferentially selected AC permanent-magnet synchronous external rotor torque motor for use.Turntable work can be adopted horizontal setting, also can adopt vertical setting.
The present invention is by installing the conduction brush at interval in the turntable outer ring; make the electric current that produces in the edm process turntable bearing of not flowing through; the damage of avoiding bearing to cause because of electric current; reach the purpose of the bearing that adequately protects; thereby prolonged the service life of turntable and the machining accuracy of spark machined, guaranteed carrying out smoothly of spark machined.
Description of drawings
Fig. 1 is a turntable plan structure schematic diagram of the present invention;
Fig. 2 be among Fig. 1 A-A to the sectional structure schematic diagram;
Fig. 3 is the sectional structure schematic diagram that turntable of the present invention uses the work of lead conduction;
Fig. 4 is the local structure for amplifying schematic diagram at C place among Fig. 2.
The specific embodiment
Turntable of the present invention is applicable to discharge processing such as spark machined, and turntable rotates on request under the manipulation of numerical control device and drives workpiece to be processed, in electrolyte, and two-stage discharge generation electric spark, the high temperature process of realization workpiece.
As Figure 1-3, turntable is by shell 1 parcel of below, and the discoid workbench 9 in its top is used for clamping workpiece to be added 13, perhaps places the parts as an electrode of spark machined.Disk workbench 9 belows are driven by driver parts such as drive motors and turntable bearing 8, terminal pads 10, are equipped with encoder 7 on the bearing 8.
Improvement of the present invention is that the edge of workbench 9 is arranged at intervals with the conductive protection device.As shown in Figure 2, in conjunction with Fig. 4 explanation.The edge of disk workbench 9 uniformly-spaced is equipped with 6 brushes 6 that conduction is good.Wherein, the quantity of brush can be provided with as required, and one, two or as many as hundreds of are all possible, select to get final product according to the diameter of turntable.Brush 6 outer side center places are equipped with push rod 5, and an end of push rod 5 is inserted in the brush 6, and the other end links to each other with spring 3, and spring 3 is fixed on the shell by lock-screw 2.Move for the rotation of preventing throw-out lever 5 drives brush, the outer circumference surface of push rod 5 leans locking by upright to the dog screw 4 that is located on the shell 1 up.
In addition, brush 6 is derived electric current by lead 11.That is to say that brush 6 is connected to shell 1 by lead, shell 1 is connected to lathe bed body as the good parts of conduction, and lathe bed body is led electricity the negative pole of telegram in reply spark processing power supply again, thereby has constituted the conductive protection device on the turntable.
And the mode that Fig. 3 provides, lead 11 directly passes turntable shell 1 and is connected to lathe bed body (or table top of lathe), and lathe bed body is connected to the negative pole of power supply in the spark machined again.Wherein, above-mentioned " being connected to ", " connection " are meant the annexation that " conduction " is good.
In addition, above-mentioned mode by push rod 5, dog screw 4, lock-screw 2 fixed brushes 6 only is a kind of optimal way of the present invention; The mode that is used for fixing brush 6 is a lot, conducts electricity good as long as guarantee brush, workbench, lead.
In the course of work, whole turntable is immersed in the electrolyte, as shown in Figure 3, workpiece to be processed 13 is fixed on the disk workbench 9, and the turntable shell is connected conduction with lathe bed body.Give the power supply of disk workbench 9 upper electrodes 14 forwards, under the effect of electrical potential difference, electrolyte ionization forms electric field and forms electric current, produces high temperature, realizes the processing of workpiece to be processed 13.In the course of work workbench 9 with electricity directly derive by the brush of contact, through turntable shell, the lathe bed body power cathode that is linked back, avoid electric current to flow through bearing 8 it damaged, thereby guaranteed the operate as normal of turntable.
What the present invention particularly should be noted that a bit is that above-mentioned brush 6, lead 11 or turntable shell 1 should be good than the bearing portions conduction of turntable.For this reason, the present invention stresses the brush parts.Be defined as according to 5.1 brush brush among the GB GB/T2900.7-1996: do sliding-contact with movement parts and form a kind of conductive component that is electrically connected.In China's industry proposed standard " JB/T4003-2001 brush for electromachine " brush is divided into four big classes: 1. electrographite brush; 2. electrographite brush; 3. resin bonded graphite brush; 4. metal-graphite brush.Brush is to be used for commutator or slip ring, as the sliding-contact body that imports and exports electric current.Its conduction, heat conduction and greasy property are good, and have the instinct of certain mechanical strength and commutation property spark.Under the optimal way, the present invention can select the wear-resisting metallic brush of conduction for use.
The above; only be the preferable specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.

Claims (2)

1. a conductive turntable comprises being positioned at the central upper portion place by motor-driven discoid workbench (9) and outside turntable shell (1), it is characterized in that,
Be provided with 1 or brush (6) is set at interval with the way of contact on the peripheral circumferential of described workbench (9);
Each described brush (6) is connected to turntable shell (1) by lead (11), and described shell (1) is connected with lathe bed body, and lathe bed body is connected to the negative pole of power supply in the spark machined;
Perhaps, each described brush (6) is connected to lathe bed body by lead (11), and described lathe bed body is connected to the negative pole of power supply in the spark machined.
2. conductive turntable according to claim 1 is characterized in that, the outside of each described brush (6) leans outer rim in described workbench (9) by push rod (5); The outer end of described push rod (5) is provided with the spring (3) of radially exerting oneself along described workbench (9); The outer end of described spring (3) is fixed on the lock-screw (2) that is located in the described shell (1).
CN201010248234XA 2010-08-09 2010-08-09 Conductive turntable CN101913087B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010248234XA CN101913087B (en) 2010-08-09 2010-08-09 Conductive turntable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010248234XA CN101913087B (en) 2010-08-09 2010-08-09 Conductive turntable

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Publication Number Publication Date
CN101913087A true CN101913087A (en) 2010-12-15
CN101913087B CN101913087B (en) 2012-02-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430824A (en) * 2011-09-16 2012-05-02 南京航空航天大学 Rotary table protection device of numerically-controlled electrolytic machine tool
CN104874880A (en) * 2015-06-15 2015-09-02 中国石油大学(华东) Servomechanism for milling electric spark made of non-conducting material

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700228A (en) * 1970-09-25 1972-10-24 Robert E Peale Adjustable axis work support
JPH05182435A (en) * 1991-12-26 1993-07-23 Nippon Chemicon Corp Energizing mode display device
US5234081A (en) * 1990-07-10 1993-08-10 Nsk Ltd. Rotary indexing device
CN101162857A (en) * 2006-10-13 2008-04-16 北京瑞赛科技有限公司 Novel direct current driving turntable structure
CN100421874C (en) * 2007-01-15 2008-10-01 大连光洋科技工程有限公司 Vertical and horizontal dual-purpose single axle table of AC permanent magnetic synchronization external-rotor-type force moment motor drive
CN100467208C (en) * 2007-01-15 2009-03-11 大连光洋科技工程有限公司 Double axle table of AC permanent magnetic synchronization external-rotor-type force moment motor drive
CN201856014U (en) * 2010-08-09 2011-06-08 大连光洋科技工程有限公司 Electric conduction-type turntable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5182435B2 (en) * 2010-10-29 2013-04-17 東レ株式会社 Method for producing polyarylene sulfide and polyarylene sulfide

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700228A (en) * 1970-09-25 1972-10-24 Robert E Peale Adjustable axis work support
US5234081A (en) * 1990-07-10 1993-08-10 Nsk Ltd. Rotary indexing device
JPH05182435A (en) * 1991-12-26 1993-07-23 Nippon Chemicon Corp Energizing mode display device
CN101162857A (en) * 2006-10-13 2008-04-16 北京瑞赛科技有限公司 Novel direct current driving turntable structure
CN100421874C (en) * 2007-01-15 2008-10-01 大连光洋科技工程有限公司 Vertical and horizontal dual-purpose single axle table of AC permanent magnetic synchronization external-rotor-type force moment motor drive
CN100467208C (en) * 2007-01-15 2009-03-11 大连光洋科技工程有限公司 Double axle table of AC permanent magnetic synchronization external-rotor-type force moment motor drive
CN201856014U (en) * 2010-08-09 2011-06-08 大连光洋科技工程有限公司 Electric conduction-type turntable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430824A (en) * 2011-09-16 2012-05-02 南京航空航天大学 Rotary table protection device of numerically-controlled electrolytic machine tool
CN104874880A (en) * 2015-06-15 2015-09-02 中国石油大学(华东) Servomechanism for milling electric spark made of non-conducting material

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Address after: 116600 No. 6, Longquan street, Dalian economic and Technological Development Zone, Liaoning

Patentee after: DALIAN GUANGYANG TECHNOLOGY GROUP CO., LTD.

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Address after: 116600 No. 8, the Yellow Sea street, Dalian economic and Technological Development Zone, Liaoning

Patentee after: Dalian Kede CNC Co., Ltd.

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