CN103273153A - Self-clamping dynamic sealing device capable of feeding electrode wires in wriggled mode - Google Patents

Self-clamping dynamic sealing device capable of feeding electrode wires in wriggled mode Download PDF

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Publication number
CN103273153A
CN103273153A CN201310195492XA CN201310195492A CN103273153A CN 103273153 A CN103273153 A CN 103273153A CN 201310195492X A CN201310195492X A CN 201310195492XA CN 201310195492 A CN201310195492 A CN 201310195492A CN 103273153 A CN103273153 A CN 103273153A
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China
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sealing ring
gland
wire electrode
hard sealing
clamping
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CN201310195492XA
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CN103273153B (en
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柴永生
张龙
范文龙
刘兆全
于志强
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Yantai University
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Yantai University
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Abstract

The invention relates to a self-clamping dynamic sealing device capable of feeding electrode wires in a wriggled mode. The self-clamping dynamic sealing device capable of feeding the electrode wires in the wriggled mode comprises a hollow main shaft of a motor, a gland, a rigid sealing ring and a flexible sealing ring. The bottom end of the hollow main shaft of the motor is linked with the gland in a threaded and sealed mode. An inner cavity is formed in the gland. The rigid sealing ring and the flexible sealing ring are filled in the inner cavity of the gland from top to bottom. Hollow electrode wires penetrate through the hollow main shaft of the motor, the rigid sealing ring, the flexible sealing ring and the gland. A seam is reserved between the upper end face of the rigid sealing ring and the lower end face of the hollow main shaft of the motor. The inner side surface of the rigid sealing ring is in clearance fit with the hollow electrode wires and a seam is reserved between the outer side surface of the rigid sealing ring and the inner side face of the gland. The upper end face of the flexible sealing ring is contacted with the rigid sealing ring. The inner side face of the flexible sealing ring is clearance fit with the hollow electrode wires. The outer side face of the flexible sealing ring is contacted with the inner side face of the gland. The lower end face of the flexible sealing ring is contacted with the bottom face in the gland. The self-clamping dynamic sealing device capable of feeding the electrode wires in the wriggled mode is simple in structure, low in cost and capable of automatically clamping and dynamically sealing the electrode wires.

Description

A kind of dynamic sealing means of clamping certainly of creep feed wire electrode
Technical field
The present invention relates to a kind of clamping device of wire electrode, relate in particular to a kind of dynamic sealing means of clamping certainly of creep feed wire electrode.
Background technology
Along with the progressively development of science and technology, it is microminiaturized that product progressively moves towards, precise treatment, thus the product process equipment has also been proposed requirements at the higher level, particularly aspect microfabrication, stabilization of equipment performance requires better, required precision is higher.Aspect microfabrication, particularly have higher requirement in the spark machined, particularly the feeding mode of wire electrode in the spark machined.Produce the creep feed theory thereupon, and played good effect.
The clamping device of traditional creep feed wire electrode as shown in Figure 1, comprise servo-driven module 101, first anchor clamps 102, wire electrode 103, second anchor clamps 104, guide head 105, described servo-driven module 101 bottom surfaces are connected with first anchor clamps 102, distance a distance, the first anchor clamps bottom is provided with guide head 105, guide head 105 end faces are connected with second anchor clamps 104, and described wire electrode once passes servo-driven module 101, first anchor clamps 102, second anchor clamps 104 and guide head 105 from top to bottom.
The workpiece that utilizes wire electrode 103 to treat punching is processed, when initial, first anchor clamps 102 are in closure state, clamping electrode silk 103, second anchor clamps 104 are in releasing orientation, add man-hour, first anchor clamps 102 are processed when arriving Working position together with wire electrode 103 servo feed (see Fig. 1 left side play first width of cloth figure) vertically under servo-driven module 101 effect;
When the feeding of finishing a station adds man-hour, servo-driven module drives first anchor clamps 102 and drives wire electrodes 103 and oppositely return (see Fig. 1 left side play second width of cloth figure) fast;
All be in original position for making each hole begin to add man-hour wire electrode 103 front ends, in wire electrode 103 back off procedure, when wire electrode 103 front ends arrive initial position, second anchor clamps, 104 closed and clamping electrode silks 103, first anchor clamps 102 unclamp electrocardio polar filament 103, make wire electrode 103 no longer to reverse movement, first anchor clamps 102 continue to reverse movement under the effect of servo-driven module, until getting back to initial position (seeing Fig. 1 left side the 3rd width of cloth figure);
After servo-driven module 101 and first anchor clamps 102 are got back to initial position, first anchor clamps, 102 closures, clamping electrode silk 103, the second anchor clamps 104 unclamp wire electrode 103, return to original state (seeing Fig. 1 left side the 4th width of cloth figure);
Repeat said process, just can realize the continuous feed of porous processing wire electrode and the automatic compensation of loss.
The processing mode of creep feed among Fig. 1 can only accomplish that the wire electrode wriggling advances, and wire electrode during the processing bellmouth is owing to have only side processing, and its head can become the type of carving gradually, is unfavorable for the raising of machining accuracy like this.
In addition, add the chip that produce man-hour in order to remove, and for reducing the temperature of workpiece and wire electrode, the clamping device of present most of creep feed wire electrode mainly is to adopt to carry out towards liquid in the Working position outside of workpiece to be punched, though outside liquid-charging type can play the effect of the temperature that reduces workpiece to be punched and wire electrode, this outside can not fine discharge add the chip that enters wire electrode inside man-hour towards the mode of liquid; Outside liquid-charging type can cause the waste towards liquid simultaneously.
Therefore expect adopting wire electrode inside towards liquid, the wire electrode creep feed, the mode of wire electrode rotation is simultaneously processed, because the wire electrode of the clamping device of existing creep feed wire electrode clamps the main mechanical clamping mode that adopts, can there be certain slit between this clamping mode wire electrode and the clamping device, so need the clamping device of creep feed wire electrode be sealed, if increase extra sealing device, then can increase the weight of general arrangement, cause device appearance and size totally bigger than normal; If adopt traditional sealing means then can not play good sealing function; If adopt the special seal mode, then can make the apparatus structure complexity.
Summary of the invention
Technical problem to be solved by this invention is at the deficiencies in the prior art, a kind of dynamic sealing means of clamping certainly of creep feed wire electrode of simple in structure, good seal performance is provided, it can effectively be removed and add the chip that enters wire electrode inside man-hour, and can realize clamping certainly and the dynamic seal (packing) of wire electrode in wire electrode creep feed and rotary course.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of dynamic sealing means of clamping certainly of creep feed wire electrode comprises motor hollow spindle, gland, hard sealing ring and soft seal circle;
Described motor hollow spindle bottom adopts thread seal to connect with the gland upper end, and at inner chamber of the inner formation of gland, described hard sealing ring and soft seal circle from top to bottom are filled in the inner chamber of gland; The coreless armature silk passes motor hollow spindle, hard sealing ring, soft seal circle and gland; Leave the slit between the upper surface of described hard sealing ring and the motor hollow spindle lower surface, matched in clearance between its inner surface and the coreless armature silk leaves the slit between the medial surface of its outer surface and gland; The upper surface of described soft seal circle contacts with the lower surface of hard sealing ring, matched in clearance between its inner surface and the coreless armature silk, and its outer surface contacts with the gland medial surface, and its lower surface contacts with the gland inner bottom surface.
Wherein, so-called matched in clearance is that hole axle (hard sealing ring or soft seal circle with between wire electrode) has cooperating of very little gap (comprising that minimum clearance equals zero), reaches the effect that wire electrode is slided along the aperture and gets final product.
On the basis of technique scheme, the present invention can also do following improvement.
Further, add man-hour, be filled with high pressure towards liquid in described motor hollow spindle, coreless armature silk and the gland.
Further, the gap width between the upper surface of described hard sealing ring and the motor hollow spindle lower surface is 1-2mm.
Further, the gap width between the medial surface of the outer surface of described hard sealing ring and gland is 1-2mm.
Further, described hard sealing ring and soft seal circle are integral structure or split structure.
Further, described hard sealing ring adopts polythene material.
Further, described soft seal circle adopts elastomeric material.
The invention has the beneficial effects as follows:
1. the present invention adopts the rotation of driven by motor motor hollow spindle, and then drive the rotation of coreless armature silk, realized like this making the rotation of coreless armature silk simultaneously guaranteeing the steadily accurate creep feed of coreless armature silk, wire electrode is evenly consumed, be conducive to improve machining accuracy; And hard sealing ring and soft seal circle can effectively be realized dynamic seal (packing), adopt inner processing mode towards liquid, realize the automatic clamping of wire electrode, simultaneously, reach saving towards the purpose of liquid;
Simple in structure, the low cost of manufacture of the present invention, provide clamping power by high pressure towards liquid fully, reduced the design of numerous and diverse clamp mechanism, do not need extra power set and sealing device, can realize clamping certainly and the dynamic seal (packing) of wire electrode.
Description of drawings
Fig. 1 is the structural representation of the clamping device of creep feed wire electrode in the prior art;
Fig. 2 is the cutaway view that clamps dynamic sealing means certainly of a kind of creep feed wire electrode of the present invention.
In the accompanying drawing, the list of parts of each label representative is as follows:
101, servo-driven module, 102, first anchor clamps, 103, wire electrode, 104, second anchor clamps, 105, guide head, 1, the motor hollow spindle, 2, gland, 3, hard sealing ring, 4, the soft seal circle, 5, the coreless armature silk, 6, often drive clip.
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 for limiting scope of the present invention.
As shown in Figure 2, a kind of dynamic sealing means of clamping certainly of creep feed wire electrode comprises motor hollow spindle 1, gland 2, hard sealing ring 3 and soft seal circle 4;
Described motor hollow spindle 1 bottom adopts thread seal to connect with gland 2 upper ends, and at inner chamber of gland 2 inner formation, described hard sealing ring 3 from top to bottom is filled in the inner chamber of gland 2 with soft seal circle 4; Coreless armature silk 5 passes motor hollow spindle 1, hard sealing ring 3, soft seal circle 4 and gland 2; Leave the slit between the upper surface of described hard sealing ring 3 and motor hollow spindle 1 lower surface, matched in clearance between its inner surface and the coreless armature silk 5 leaves the slit between the medial surface of its outer surface and gland 2; The upper surface of described soft seal circle 4 contacts with the lower surface of hard sealing ring 3, matched in clearance between its inner surface and the coreless armature silk 5, and its outer surface contacts with gland 2 medial surfaces, and its lower surface contacts with gland 2 inner bottom surface.
So-called matched in clearance is that hole between centers (hard sealing ring or soft seal circle with between wire electrode) has cooperating of very little gap (comprising that minimum clearance equals zero), reaches the effect that wire electrode is slided along the aperture and gets final product.
Wherein, add man-hour, be filled with high pressure towards liquid in described motor hollow spindle 1, coreless armature silk 5 and the gland 2.
Wherein, the gap width between the upper surface of described hard sealing ring 3 and motor hollow spindle 1 lower surface is 1-2mm.
Wherein, the gap width between the medial surface of the outer surface of described hard sealing ring 3 and gland 2 is 1-2mm.
Wherein, described hard sealing ring 3 and soft seal circle 4 are integral structure or split structure.
Wherein, described hard sealing ring 3 adopts polythene material.
Wherein, described soft seal circle 4 adopts elastomeric material.
Described hard sealing ring 3 adopts insulation and on-deformable material, as polythene material, plastics or pottery etc.
Described soft seal circle 4 adopts the material of the better easy compression of pliability, as butadiene-styrene rubber, butadiene rubber or isoprene rubber etc.
The material of described hard sealing ring 3 and soft seal circle 4 can replace with other material that has similar characteristics with it.
Hard sealing ring 3 and soft seal circle 4 adopt above-mentioned materials mainly consider following some:
1. if adopt movable sealing commonly used, namely mainly be to use the parts sealing of carrying out as felt, soft packing, hard packing etc., this sealing means is beginning still can to play the effective seal effect, but the high speed rotation along with wire electrode, can produce friction, this friction can cause the loss of encapsulant, thereby can not play effective, permanent sealing function, just need often to change black box in order to reach effective, permanent sealing effectiveness, therefore increased the non-cutting time of processing, reduce production efficiency, increased production cost.
2. the diameter of coreless armature silk 5 is very little, is generally 0.1-3mm, therefore uses traditional movable sealing mode to seal relatively difficulty, makes relatively difficulty of such potted component, and cost is than higher.
3. if adopt static seal, can not well realize the sealing of coreless armature silk 5, thereby cause the leakage of high pressure liquid.
4. adopt special seal mode, required structure more complicated, manufacturing cost height.
Therefore, hard sealing ring 3 of the present invention and soft seal circle 4 have been done sufficient consideration in selection, can play good sealing effectiveness, have realized dynamic seal (packing); And when coreless armature silk 5 rotates at a high speed, very little to the loss of hard sealing ring 3 and soft seal circle 4, needn't often change, thereby improve production efficiency, reduced production cost.
Briefly introduce the operation principle that clamps dynamic sealing means certainly of a kind of creep feed wire electrode of the present invention below:
Add man-hour, the dynamic sealing means that clamps certainly of a kind of creep feed wire electrode of the present invention will be used with the clip 6 of often opening of its a distance, lower end.
1) prepares to add man-hour, open the high pressure hydromechanical system, high pressure enters into motor hollow spindle 1 inside towards liquid, and then enters in the gland 2, because high pressure acts on upper surface and the side of hard close circle 3 towards liquid, make hard sealing ring 3 produce axially-movable, hard sealing ring 3 extruding soft seal downwards circle 4,4 extrusions of soft seal circle, and then clamp coreless armature silk 5, seal simultaneously, make high pressure be unlikely to be revealed by gland 2 bottoms towards liquid; Simultaneously, the motor rotation drives wire electrode and rotates synchronously; The clip 6 of often opening of this moment below is in open mode, when coreless armature silk 5 moves to Working position, begins to process workpiece to be punched, and adds man-hour high pressure topping up and flows down from coreless armature silk 5 inside, reaches to wash away to add the iron filings that produce man-hour and the purpose of cooling;
2) machine after, motor stops the rotation, and motor hollow spindle 1 is return, and this moment, wire electrode 5 upper ends were still clamped by hard sealing ring 3 and soft seal circle 4, the bottom is often driven clip 6 and is in releasing orientation, so coreless armature silk 5 is return in the same way in the other direction with motor hollow spindle 1 one;
3) for making when processing coreless armature silk 5 front ends at same position, when coreless armature silk 5 front ends arrive initial position, often drive clip 6 and clamp coreless armature silk 5 bottoms, disconnect the high pressure topping up simultaneously, this moment, hard sealing ring 3 and soft seal circle 4 no longer were squeezed, so core motor silk 5 upper ends are in releasing orientation; Motor hollow spindle 1 continuation this moment is to reverse movement, and until turning back to initial position, this moment, coreless armature silk 5 was no longer to reverse movement;
4) wait until next station processing beginning, open the high pressure topping up, coreless armature silk 5 upper ends are clamped by hard sealing ring 3 and soft seal circle 4, simultaneously hard sealing ring 3 and soft seal circle 4 are realized the sealing of high pressure towards liquid, the bottom that clip 6 unclamps wire electrode is often opened in the lower end, and motor rotates, and drives the wire electrode rotation, when wire electrode moves downward Working position, carry out processing this time;
5) repeat said process, just can realize the continuous feed of porous processing wire electrode and the automatic compensation of loss.
In the above-mentioned process, realized coreless armature silk 5 in the process that guarantees steady feeding, hard sealing ring 3 and soft seal circle 4 can effectively be realized dynamic seal (packing) during 5 rotations of coreless armature silk, realize the automatic clamping of coreless armature silk 5 simultaneously; And provide clamping power by high pressure towards liquid fully, reduced the design of numerous and diverse clamp mechanism, do not need extra power set and sealing device, can realize clamping certainly and the dynamic seal (packing) of coreless armature silk 5.
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 (7)

1. the dynamic sealing means of clamping certainly of a creep feed wire electrode is characterized in that, comprises motor hollow spindle, gland, hard sealing ring and soft seal circle;
Described motor hollow spindle bottom adopts thread seal to connect with the gland upper end, and at inner chamber of the inner formation of gland, described hard sealing ring and soft seal circle from top to bottom are filled in the inner chamber of gland; The coreless armature silk passes motor hollow spindle, hard sealing ring, soft seal circle and gland; Leave the slit between the upper surface of described hard sealing ring and the motor hollow spindle lower surface, matched in clearance between its inner surface and the coreless armature silk leaves the slit between the medial surface of its outer surface and gland; The upper surface of described soft seal circle contacts with the lower surface of hard sealing ring, matched in clearance between its inner surface and the coreless armature silk, and its outer surface contacts with the gland medial surface, and its lower surface contacts with the gland inner bottom surface.
2. according to the dynamic sealing means of clamping certainly of the described a kind of creep feed wire electrode of claim 1, it is characterized in that, add man-hour, be filled with high pressure towards liquid in described motor hollow spindle, coreless armature silk and the gland.
3. according to the dynamic sealing means of clamping certainly of the described a kind of creep feed wire electrode of claim 1, it is characterized in that the gap width between described hard sealing ring upper surface and the motor hollow spindle lower surface is 1-2mm.
4. according to the dynamic sealing means of clamping certainly of the described a kind of creep feed wire electrode of claim 1, it is characterized in that the gap width between the outer surface of described hard sealing ring and the medial surface of gland is 1-2mm.
5. according to the dynamic sealing means of clamping certainly of the described a kind of creep feed wire electrode of claim 1, it is characterized in that described hard sealing ring and soft seal circle are integral structure or split structure.
6. according to the dynamic sealing means of clamping certainly of the described a kind of creep feed wire electrode of claim 1, it is characterized in that described hard sealing ring adopts polythene material.
7. according to the dynamic sealing means of clamping certainly of the described a kind of creep feed wire electrode of claim 1, it is characterized in that described soft seal circle adopts elastomeric material.
CN201310195492.XA 2013-05-23 2013-05-23 Self-clamping dynamic sealing device capable of feeding electrode wires in wriggled mode Active CN103273153B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106391630A (en) * 2016-09-29 2017-02-15 马鞍山钢铁股份有限公司 Sealing device used for EDT electrode flushing
CN110860747A (en) * 2019-11-22 2020-03-06 中国航空制造技术研究院 Electrode clamp for deep small hole electric spark forming machining and machining method
CN111673209A (en) * 2020-05-27 2020-09-18 上海交通大学 High-speed arc machining inner flushing liquid negative pressure suction device and machining method

Citations (6)

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Publication number Priority date Publication date Assignee Title
CN1695861A (en) * 2005-05-19 2005-11-16 上海交通大学 Crawling type superfine electric spark machining equipment
JP2009006420A (en) * 2007-06-27 2009-01-15 Mitsubishi Electric Corp Electric discharge machining device
CN201603930U (en) * 2010-02-22 2010-10-13 西北工业大学 Slant hole spark-machining device
CN102513626A (en) * 2011-12-23 2012-06-27 清华大学 Electrode wire rotation and feeding combined driving spindle mechanism for micro electric discharge machining
CN102554378A (en) * 2012-01-12 2012-07-11 中国工程物理研究院机械制造工艺研究所 Multifunctional composite electromachining spindle
CN102837092A (en) * 2012-09-25 2012-12-26 烟台大学 Rotary-arc coupling discharging milling device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1695861A (en) * 2005-05-19 2005-11-16 上海交通大学 Crawling type superfine electric spark machining equipment
JP2009006420A (en) * 2007-06-27 2009-01-15 Mitsubishi Electric Corp Electric discharge machining device
CN201603930U (en) * 2010-02-22 2010-10-13 西北工业大学 Slant hole spark-machining device
CN102513626A (en) * 2011-12-23 2012-06-27 清华大学 Electrode wire rotation and feeding combined driving spindle mechanism for micro electric discharge machining
CN102554378A (en) * 2012-01-12 2012-07-11 中国工程物理研究院机械制造工艺研究所 Multifunctional composite electromachining spindle
CN102837092A (en) * 2012-09-25 2012-12-26 烟台大学 Rotary-arc coupling discharging milling device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106391630A (en) * 2016-09-29 2017-02-15 马鞍山钢铁股份有限公司 Sealing device used for EDT electrode flushing
CN110860747A (en) * 2019-11-22 2020-03-06 中国航空制造技术研究院 Electrode clamp for deep small hole electric spark forming machining and machining method
CN111673209A (en) * 2020-05-27 2020-09-18 上海交通大学 High-speed arc machining inner flushing liquid negative pressure suction device and machining method

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Assignee: Zoucheng Yuntian Mining Technology Co.,Ltd.

Assignor: Yantai University

Contract record no.: X2023980046826

Denomination of invention: A self clamping dynamic sealing device for peristaltic feed electrode wire

Granted publication date: 20150422

License type: Common License

Record date: 20231121

Application publication date: 20130904

Assignee: Shandong Yanneng Taide Heavy Industry Co.,Ltd.

Assignor: Yantai University

Contract record no.: X2023980046824

Denomination of invention: A self clamping dynamic sealing device for peristaltic feed electrode wire

Granted publication date: 20150422

License type: Common License

Record date: 20231121

Application publication date: 20130904

Assignee: SHANDONG NEW SUNSHINE ENVIRONMENTAL PROTECTION EQUIPMENT CO.,LTD.

Assignor: Yantai University

Contract record no.: X2023980046818

Denomination of invention: A self clamping dynamic sealing device for peristaltic feed electrode wire

Granted publication date: 20150422

License type: Common License

Record date: 20231121

Application publication date: 20130904

Assignee: Shandong Lingzhi Robot Automation Co.,Ltd.

Assignor: Yantai University

Contract record no.: X2023980046815

Denomination of invention: A self clamping dynamic sealing device for peristaltic feed electrode wire

Granted publication date: 20150422

License type: Common License

Record date: 20231121