CN104874880A - Servomechanism for milling electric spark made of non-conducting material - Google Patents
Servomechanism for milling electric spark made of non-conducting material Download PDFInfo
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- CN104874880A CN104874880A CN201510325265.3A CN201510325265A CN104874880A CN 104874880 A CN104874880 A CN 104874880A CN 201510325265 A CN201510325265 A CN 201510325265A CN 104874880 A CN104874880 A CN 104874880A
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- casing
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- conducting material
- auxiliary electrode
- electric spark
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention relates to a servomechanism for milling an electric spark made of a non-conducting material. The servomechanism comprises a servo motor, a speed reducer, a shaft, a sheet storage wheel, a box body and a support frame, wherein the box body is connected and fixed with a machine tool through a bolt; the servo motor is connected onto the speed reducer through a bolt; the speed reducer is connected onto the support frame through a bolt; the support frame is connected onto the box body through a bolt; an output shaft of the servo motor is connected with an input shaft of the speed reducer; the output shaft of the servo motor is connected with the input shaft of the speed reducer; the output shaft of the speed reducer is connected with one end of a coupling; the other end of the coupling is connected with the shaft; a right bearing, a left bearing and the sheet storage wheel are sequentially mounted on the shaft in the direction from the servo motor to the speed reducer; an auxiliary electrode winds the storage wheel; an elastic strip presses the outermost layer of the auxiliary electrode; one end of the auxiliary electrode extends into a guide slot of a guide plate to guide the movement of the auxiliary electrode. The continuous feeding of the auxiliary electrodes can be realized, a continuous and stable conductive layer can be formed when the non-conducting material is processed, and the servomechanism has the advantages of being simple in structure, low in cost and the like.
Description
Technical field
The invention belongs to field of machining, particularly, relate to a kind of non-conducting material electric spark milling processing servomechanism installation.
Background technology
Spark machined is that Local Instantaneous high temperature, the High Pressure produced by spark discharge between tool-electrode and workpiece carrys out ablation material, add man-hour tool-electrode and workpiece between without macroscopical active force, any hard, crisp, tough, soft, dystectic material can be processed.But because non-conducting material directly can not carry out spark discharge processing as a side of electrode pair, bring larger difficulty to the exploitation of its EDM Technology.The spark erosion technique research of non-conducting material is a study hotspot in current special process field, and at present, what Chinese scholars research was more mainly contains high-voltage spark processing, electrolysis spark machined, auxiliary electrode spark machined etc.
High-voltage spark adds man-hour, non-conductive workpiece is put between sharp electrode and plate electrode, and apply the high voltage of 5000 ~ 6000 volts at two interpolars, the high electric-field intensity utilizing two interpolars to produce by air breakdown, produce strong glow discharge and carry out the non-conductive workpiece material of ablation.The method is mainly used in the processing in non-conducting material hole, but the hole of processing is shallow, and shape is coarse, needs follow-up machining to repair and grinds.
Electrolysis spark machined is that current non-conducting material electric spark manufacture field studies a kind of more method, electrolysis electrical spark working man-hour, tool-electrode, non-conductive workpiece and auxiliary electrode are all placed in the electrolytic solution, when external voltage acts on two electrodes, first insulating gas phase is formed by electrolysis on tool-electrode surface, then high electric potential gradient is formed mutually by this insulating gas, cause spark discharge, the TRANSIENT HIGH TEMPERATURE High Pressure produced by spark discharge carrys out the non-conductive workpiece material of ablation.But insulating gas phase required during owing to will consume a large amount of electric energy to form spark discharge in electrolytic process, therefore there is the defects such as machining accuracy difference, efficiency are low, easy-to-rust lathe, easily contaminated environment in the method.Based on this, Liu Yonghong proposes inflation electrolysis electric spark combined machining method, the insulating gas phase needed for electrode end surface spark discharge is formed in the mode of inflation, improve production efficiency and reduce energy consumption, but efficiency is still aobvious low when being applied to actual production, exhale pernicious gases in process, processing environment is poor simultaneously.
Auxiliary electrode electric discharge machining method is on non-conductive workpiece material, lay an auxiliary electrode be made up of the conductive material such as metallic plate or wire netting in advance, when processing starts, spark discharge is produced between tool-electrode and auxiliary electrode, the material of electric discharge removal forms conductive layer at surface of the work, utilizes the non-conductive workpiece material of discharge process ablation between tool-electrode and conductive layer.Owing to being difficult to form continual and steady conductive layer in process, therefore the method working (machining) efficiency is low, and is mainly suitable for nibs processing.
Summary of the invention
For overcoming the defect that prior art exists, the invention provides a kind of non-conducting material electric spark milling processing servomechanism installation, improving the working (machining) efficiency of non-conducting material, reduce its processing cost.
For achieving the above object, the technical solution used in the present invention is as follows:
Non-conducting material electric spark milling processing servomechanism installation, comprising: servomotor, decelerator, axle, stocker wheel, casing, bracing frame; Wherein: casing comprises base plate, the three blocks of side plates be connected with base plate and the floor perpendicular to base plate, two parallel side plates, and floor and the side plate parallel with floor are provided with coaxial hole, and casing and lathe are bolted fixing; Servomotor is bolted on decelerator, and decelerator is bolted on bracing frame, and bracing frame is bolted on casing; The input of the output shaft connection reducer of servomotor, the output shaft of decelerator is connected with one end of shaft coupling, the other end of shaft coupling is connected by screw in compression with axle, axle to be provided with right bearing successively by servomotor to the direction of decelerator, left bearing, stocker take turns, right bearing is installed on the plate parallel with floor of casing, left bearing is installed on the floor of casing, stocker wheel is positioned at the semiclosed cavity of box bottom, biside plate, floor formation, and stocker wheel is connected by key with axle; Stocker wheel is wound around auxiliary electrode, compresses at auxiliary electrode outermost layer elastic band; One end of auxiliary electrode is stretched out and is entered in the gathering sill of guide plate, and guide plate is bolted on bearing, and bearing is bolted on the base plate of casing, and the bottom of box side is provided with open slot, and guide plate passes from this open slot; Shaft portion between left bearing and right bearing is pressed with carbon brush, and carbon brush is contained in carbon brush holder, and carbon brush holder is positioned at the semiclosed cavity of box bottom, three side plates, floor formation, and carbon brush holder is bolted on casing.
Relative to prior art, the present invention has following beneficial effect:
1, TRANSIENT HIGH TEMPERATURE, the High Pressure produced that discharge between the auxiliary electrode utilizing instrument emery wheel and send to along surface of the work servo carrys out the non-conductive workpiece of ablation, its Uniform discharge by the impact of machined material electric conductivity, can not process various unmanageable non-conducting material.
2, sending to continuously of auxiliary electrode can be realized, overcome the shortcoming that traditional auxiliary electrode electric discharge machining method is difficult to be formed continual and steady conductive layer.
3, by adjustment spark discharge parameter, can realize on same a machine tool to non-conducting material thick, in, fine finishining.
4, adopt water-based emulsion liquid as non-conducting material electric spark milling processing work liquid, common non-conducting material electrolysis electric spark combined machining method can be avoided because of problems such as the contaminated environment, corrosion equipment and the energy consumption that use electrolyte or other conduction liquid and bring are large.
5, in non-conducting material electric spark milling process, macroscopical active force of instrument emery wheel, auxiliary electrode and non-conductive workpiece is very little, can realize the processing to complicated Low rigidity non-conducting material part easily.
6, the present invention has that working (machining) efficiency is high, cost is low, advantages of simple structure and simple.
Accompanying drawing explanation
Fig. 1 is the integral installation figure of non-conducting material electric spark milling processing servomechanism installation;
Fig. 2 is the mounted inside figure of non-conducting material electric spark milling processing servomechanism installation;
Fig. 3 is the overall sectional arrangement drawing of non-conducting material electric spark milling processing servomechanism installation;
Fig. 4 is the part explosive decomposition figure of non-conducting material electric spark milling processing servomechanism installation;
Fig. 5 is the body structure figure of non-conducting material electric spark milling processing servomechanism installation;
In figure: 1, servomotor, 2, decelerator, 3, shaft coupling, 4, axle, 5, left bearing, 6, right bearing, 7, stocker wheel, 8, casing, 9, auxiliary electrode, 10, elastic band, 11, spring, 12, guide plate, 13, bearing, 14, carbon brush, 15, carbon brush holder, 16, bracing frame.
Detailed description of the invention
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, non-conducting material electric spark milling processing servomechanism installation, mainly comprises: servomotor 1, decelerator 2, axle 4, stocker wheel 7, casing 8, bracing frame 16; Wherein:
Casing 8 is foundry goods, comprise base plate, the three blocks of side plates be connected with base plate and the floor perpendicular to base plate, two parallel side plates, floor and the side plate parallel with floor are provided with coaxial hole, so that install left bearing 5 and right bearing 6 respectively, casing 8 and lathe are bolted fixing.
Servomotor 1 is AC servo motor, and servomotor 1 is bolted on decelerator 2, and decelerator 2 is bolted on bracing frame 16, and bracing frame 16 is bolted on casing 8.
The input of the output shaft connection reducer 2 of servomotor 1, decelerator 2 is used for transmitting power, increasing Driving Torque, the output shaft of decelerator 2 is connected with one end of shaft coupling 3, the other end of shaft coupling 3 is connected by screw in compression with axle 4, axle 4 to be provided with right bearing 6 successively by servomotor 1 to the direction of decelerator 2, left bearing 5, stocker take turns 7, right bearing 6 is installed on the plate parallel with floor of casing 8, left bearing 5 is installed on the floor of casing 8, and right bearing 6 and left bearing 5 pairs of axles 4 support; Stocker wheel 7 is positioned at the semiclosed cavity of box bottom, biside plate, floor formation, and stocker wheel 7 is connected by key with axle 4, guarantees the moment of torsion of servomotor 1 to be passed to stocker wheel 7.
Stocker wheel 7 is wound around auxiliary electrode 9, auxiliary electrode 9 is the copper sheet of long 10m, thick 0.05-0.10mm, wide 25mm, compress at auxiliary electrode 9 outermost layer elastic band 10, one end of elastic band 10 is bolted casing 8, the other end is bolted one end of spring 11, the other end of spring 11 is bolted on the base plate of casing 8, by the pulling force of regulating spring 11 and elastic band 10, auxiliary electrode 9 is tightly wrapped on stocker wheel 7, ensures that auxiliary electrode 9 is not loose and folding in feeding and back off procedure.
Two block plates of guide plate 12 for being bolted, accompany the two block length bar rectangular sheets that thickness is 0.3mm, to form gathering sill between two block plates; One end of auxiliary electrode 9 is stretched out in the gathering sill entering guide plate 12, leads to the motion of auxiliary electrode 9; Guide plate 12 is bolted on bearing 13, and bearing 13 is bolted on the base plate of casing 8, and the bottom of casing 8 side plate is provided with open slot, and guide plate 12 passes from this open slot, so that lead to auxiliary electrode 9.
In process by control servomotor 1 output shaft turn to and rotating speed maintains discharging gap suitable between auxiliary electrode 9 and instrument emery wheel, thus guarantee the carrying out that the processing of Non-conductive Engineering Ceramics discharging milling is continual and steady.
Axle 4 part between left bearing 5 and right bearing 6 is pressed with carbon brush 14, carbon brush 14 is contained in carbon brush holder 15, carbon brush holder 15 is positioned at the semiclosed cavity of box bottom, three side plates, floor formation, carbon brush holder 15 is bolted on casing 8, in process, carbon brush 14 connects pulse power positive pole, make auxiliary electrode 9 charged by axle 4, stocker wheel 7, so that carry out electric discharge processing.
In order to do not allow in process servomotor 1 and decelerator 2 charged, shaft coupling 3 and bracing frame 16 adopt insulating materials.
During electrical discharge milling machining, auxiliary electrode 9 is connected with the positive pole of the pulse power by carbon brush 14, instrument emery wheel is connected with the negative pole of the pulse power, non-conducting material trade union college is at X, on Y-direction workbench, servomotor 1 rotates under the control of Servo System of Machine Tools, torque is increased through decelerator 2, power is passed to axle 4 by shaft coupling 3, axle 4 connects drive stocker wheel 7 by key and does same in the same way rotational speed, the rotation of stocker wheel 7 makes auxiliary electrode 9 through guide plate 12, servo feed motion is done to instrument emery wheel along non-conducting material surface, Water-based working liquid for electrical punching is noted between instrument emery wheel and auxiliary electrode.When distance between the end and instrument emery wheel of auxiliary electrode 9 reaches discharge breakdown gap, produce spark discharge along non-conductive surface of the work, the TRANSIENT HIGH TEMPERATURE utilizing spark discharge to produce, High Pressure carry out the non-conductive workpiece material of ablation.Electric discharge is while ablation non-conducting material, and auxiliary electrode 9 also has certain loss, and servomotor 1 controls the rotating speed of stocker wheel 7, and auxiliary electrode 9 can be sent in time along non-conductive surface of the work, maintains the continuous discharge between auxiliary electrode 9 and instrument emery wheel.In addition, when being short-circuited with arc discharge, under the control of Servo System of Machine Tools, servomotor 1 reverses rapidly, drives stocker wheel 7 reversion, makes auxiliary electrode 9 energy fast fallback, protects instrument emery wheel and auxiliary electrode 9 not to be burnt, damage.Non-conductive workpiece does the movement of X, Y-direction under the drive of X, Y-direction travelling table, is realized the electrical discharge milling machining of the large plane of non-conductive workpiece by the relative motion between workbench and instrument emery wheel.
Claims (7)
1. a non-conducting material electric spark milling processing servomechanism installation, comprising: servomotor, decelerator, axle, stocker wheel, casing, bracing frame; It is characterized in that: casing comprises base plate, the three blocks of side plates be connected with base plate and the floor perpendicular to base plate, two parallel side plates, and floor and the side plate parallel with floor are provided with coaxial hole, and casing and lathe are bolted fixing; Servomotor is bolted on decelerator, and decelerator is bolted on bracing frame, and bracing frame is bolted on casing; The input of the output shaft connection reducer of servomotor, the output shaft of decelerator is connected with one end of shaft coupling, the other end of shaft coupling is connected by screw in compression with axle, axle to be provided with right bearing successively by servomotor to the direction of decelerator, left bearing, stocker take turns, right bearing is installed on the plate parallel with floor of casing, left bearing is installed on the floor of casing, stocker wheel is positioned at the semiclosed cavity of box bottom, biside plate, floor formation, and stocker wheel is connected by key with axle; Stocker wheel is wound around auxiliary electrode, compresses at auxiliary electrode outermost layer elastic band; One end of auxiliary electrode is stretched out and is entered in the gathering sill of guide plate, and guide plate is bolted on bearing, and bearing is bolted on the base plate of casing, and the bottom of box side is provided with open slot, and guide plate passes from this open slot; Shaft portion between left bearing and right bearing is pressed with carbon brush, and carbon brush is contained in carbon brush holder, and carbon brush holder is positioned at the semiclosed cavity of box bottom, three side plates, floor formation, and carbon brush holder is bolted on casing.
2. non-conducting material electric spark milling processing servomechanism installation according to claim 1, it is characterized in that: one end of elastic band is bolted casing, the other end is bolted one end of spring, and the other end of spring is bolted on the base plate of casing.
3. the non-conducting material electric spark milling processing servomechanism installation according to claim 1-2, it is characterized in that: guide plate is two block plates be bolted, the two block length bar rectangular sheets that thickness is 0.3mm are accompanied, to form gathering sill between two block plates.
4. the non-conducting material electric spark milling processing servomechanism installation according to claim 1-3, is characterized in that: shaft coupling and bracing frame adopt insulating materials.
5. the non-conducting material electric spark milling processing servomechanism installation according to claim 1-4, is characterized in that: auxiliary electrode 9 is the copper sheet of long 10m, thick 0.05-0.10mm, wide 25mm.
6. the non-conducting material electric spark milling processing servomechanism installation according to claim 1-5, is characterized in that: servomotor is AC servo motor.
7. the non-conducting material electric spark milling processing servomechanism installation according to claim 1-6, is characterized in that: casing is foundry goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325265.3A CN104874880A (en) | 2015-06-15 | 2015-06-15 | Servomechanism for milling electric spark made of non-conducting material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325265.3A CN104874880A (en) | 2015-06-15 | 2015-06-15 | Servomechanism for milling electric spark made of non-conducting material |
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| CN104874880A true CN104874880A (en) | 2015-09-02 |
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| CN201510325265.3A Pending CN104874880A (en) | 2015-06-15 | 2015-06-15 | Servomechanism for milling electric spark made of non-conducting material |
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Cited By (4)
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| CN106392224A (en) * | 2016-11-17 | 2017-02-15 | 淮安信息职业技术学院 | Electrode wire disc damper of electric spark fast wire moving linear cutting machine tool |
| CN109454301A (en) * | 2018-11-16 | 2019-03-12 | 华东交通大学 | A kind of faulty bearing sample processing unit (plant) based on shaft current phenomenon |
| CN111992823A (en) * | 2020-07-22 | 2020-11-27 | 广东工业大学 | Double-station sheet cutting connecting rod cracking groove device |
| CN113483262A (en) * | 2021-06-28 | 2021-10-08 | 中冶赛迪工程技术股份有限公司 | Lightning protection type mechanical internal capacity indicator for storage tank |
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Cited By (4)
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| CN106392224A (en) * | 2016-11-17 | 2017-02-15 | 淮安信息职业技术学院 | Electrode wire disc damper of electric spark fast wire moving linear cutting machine tool |
| CN109454301A (en) * | 2018-11-16 | 2019-03-12 | 华东交通大学 | A kind of faulty bearing sample processing unit (plant) based on shaft current phenomenon |
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| CN113483262A (en) * | 2021-06-28 | 2021-10-08 | 中冶赛迪工程技术股份有限公司 | Lightning protection type mechanical internal capacity indicator for storage tank |
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Application publication date: 20150902 |