CN102179584A - Electrochemical machining device for multi-head arc screw rods - Google Patents
Electrochemical machining device for multi-head arc screw rods Download PDFInfo
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- CN102179584A CN102179584A CN 201110147638 CN201110147638A CN102179584A CN 102179584 A CN102179584 A CN 102179584A CN 201110147638 CN201110147638 CN 201110147638 CN 201110147638 A CN201110147638 A CN 201110147638A CN 102179584 A CN102179584 A CN 102179584A
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Abstract
The invention discloses an electrochemical machining device for multi-head arc screw rods, which comprises a cathode installation cylinder, a sleeve type cathode assembly, an electrolyte backflow sleeve, a drainage/conduction assisted apparatus, an electrolyte system and a power supply, wherein the electrolyte system is communicated with the sleeve type cathode assembly and the electrolyte backflow sleeve by pipelines, and the power supply is connected with the drainage/conduction assisted apparatus and the cathode installation cylinder. The electrochemical machining device disclosed by the invention is characterized in that the sleeve type cathode assembly is composed of a cathode sleeve and a workpiece guide sleeve arranged in the left part of the cathode sleeve, the inside of the cathode sleeve is provided with an electrolyte inlet hole, and the electrolyte inlet hole is communicated with the electrolyte system by a pipeline; the inside of the middle part of the cathode sleeve is provided with an operating cone; and the left side of the operating cone is a front electrolyte rectification area, and the right side of the operating cone is a rear electrolyte rectification area. By using the electrochemical machining device instead of mechanical machining, the production efficiency is increased by three times, the size and roughness of a product are both superior to those of a product prepared through mechanical machining, and the energy is reduced to 1/5 of that consumed through mechanical machining; and by using the electrochemical machining device, the electrochemical machining on multi-head arc screw rods can be realized without producing process stub bars, the machining efficiency is high, and the machining cost is low.
Description
Technical field
The present invention relates to electrochemical machining method and device, be specifically related to a kind of electrolytic machining device of bull arc spiral rod member.
Background technology
Specific purpose tool-the screw pump of petroleum and natural gas drilling, its critical piece screw rod is a multi-head spiral circular arc contour structures, the characteristics of this multi-head spiral circular arc profile are: bigger lead of screw, be generally 0.8～1.2m, helical shape all is the R(semi arch) the slick and sly connection, be generally 4～7, brought great difficulty to processing and manufacturing.At present, Chang Gui processing method mainly contains:
1. copying lathe processing, the deficiency of existence is that efficient is low, cost of charp tool height, surface quality and dimensional accuracy do not reach requirement.
2. broaching machine broaching processing, the deficiency of existence is a cost of charp tool height, crudy is subjected to the restriction of material hardness.
3. the special-purpose Cutter Body Processing with Machining Center of screw rod, the deficiency of existence is that working (machining) efficiency depends on and the fitting precision of arc-shaped surface, process higher precision, working (machining) efficiency must descend.
Electrolyzed Processing is a kind of manufacturing technology of removing metal material according to the anode electrochemical solution principle, have that not to be subjected to tool materials hardness restriction, machining accuracy to be easy to control, production efficiency height, cost low, and characteristics such as instrument is lossless are commonly used to difficult processing cutting material and complex-shaped part.In industries such as aviation, weapons, mould manufacturings important use is arranged.At present, more effective profile Electrolyzed Processing mode is the turbine blades in electrochemical machining method of jet engine, steam turbine.Shape for the bull arc spiral is carried out Electrolyzed Processing, yet there are no report.Adopting electrolytic method to carry out the sharp processing of bull arc spiral has many difficult points, and this has just limited the wide popularization and application of this technology.Its difficult point mainly is: the Flow Field Distribution of negative electrode is difficult for optimizing, and design initial stage trial-produce period is longer; The complex structure of negative electrode, difficulty of processing is higher; The servicing unit more complicated of processing.
Summary of the invention
The purpose of this invention is to provide a kind of electrolytic machining device of bull arc spiral rod member, it is simple in structure, makes easily, can process big helical pitch, bull arc spiral rod member, makes the slick and sly connection of circular arc profile; Can improve the working (machining) efficiency height, reduce production costs, be applicable to batch process.
The electrolytic machining device of bull arc spiral rod member of the present invention, comprise negative electrode tube is installed, be located at negative electrode the shell type cathode assembly in the left part in the tube is installed, be located at negative electrode install electrolyte in the tube right part reflux cover, reflux with shell type cathode assembly and electrolyte that the inwall of cover cooperates and right-hand member stretch out electrolyte reflux cover drain conduction accessory, by pipeline and shell type cathode assembly and electrolyte reflux electrolyte system that cover is communicated with, conduct electricity an accessory and a negative electrode installation power supply that is connected with drain, it is characterized in that:
Described shell type cathode assembly is made up of cathode sheath and the workpiece fairlead that is located in the cathode sheath left part, is provided with the inlet opening that is communicated with electrolyte system in cathode sheath, and this inlet opening communicates with electrolyte system by pipeline; Be provided with Drawing cone in the middle part of cathode sheath, the relative position relation of sealing shroud in lead of screw that this Drawing cone and electrolyte reflux in overlapping determined by drain conduction accessory; The left side of Drawing cone is that commutating zone before the electrolyte, the right are commutating zone behind the electrolyte.
Workpiece is by shell type cathode assembly guiding, and it is consistent with the center of shell type cathode assembly to guarantee workpiece that long workpiece need be installed aiding support, guarantees that the stable of process carries out; The entire processing apparatus negative electrode is fixed, and workpiece is made the mode of rotation compound motion and processed by workpiece fairlead guiding under the machine tool chief axis traction; Therefore, the workpiece fairlead in the shell type cathode assembly must be consistent with the excircle of workpiece size, stays necessary mobile space; Excircle of workpiece need pass through grinding, improves the service life of negative electrode.
Beneficial effect of the present invention: the present invention replaces machining, and production efficiency improves 3 times, and product size and roughness all are better than machining, and energy consumption drops to 1/5 of machining; Can realize the Electrolyzed Processing of multi-head spiral circular arc profile, not have the technology stub bar, the working (machining) efficiency height, processing cost is lower.
Description of drawings
Fig. 1 is the device schematic diagram of processing work of the present invention;
Fig. 2 is the structural representation of shell type cathode assembly;
Fig. 3 is the partial sectional view of Fig. 2;
Fig. 4 is the structural representation of drain conduction accessory;
Fig. 5 is the A-A cutaway view of Fig. 4.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
Electrolytic machining device referring to Fig. 1, Fig. 2, bull arc spiral rod member shown in Figure 3, comprise negative electrode tube 2 is installed, be located at negative electrode the shell type cathode assembly 3 in the left part in the tube is installed, be located at negative electrode install electrolyte in the tube right part reflux cover 8, reflux with shell type cathode assembly and electrolyte that the inwall of cover cooperates and right-hand member stretch out electrolyte reflux cover drain conduction accessory 4, by pipeline and shell type cathode assembly and electrolyte reflux electrolyte system 7 that cover is communicated with, conduct electricity an accessory and a negative electrode installation power supply 6 that is connected with drain, its design feature is:
Described shell type cathode assembly 3 is made up of cathode sheath 3-6 and the workpiece fairlead 3-1 that is located in the cathode sheath left part, is provided with the inlet opening 3-2 that is communicated with electrolyte system in cathode sheath, and this inlet opening communicates with electrolyte system 7 by pipeline;
Be provided with Drawing cone 3-4 in the middle part of cathode sheath 3-6, the relative position relations of sealing shroud in lead of screw in this Drawing cone and the electrolyte backflow cover 8 are determined by drain conduction accessory 4; The left side of Drawing cone 3-4 is that commutating zone 3-3 before the electrolyte, the right are commutating zone 3-5 behind the electrolyte.
Before the processing, earlier negative electrode is placed negative electrode that tube is installed, again negative electrode being installed tube is installed on the lathe universal fixturing, cathode center should to move pivot consistent with lathe, workpiece is installed on the aiding support on the lathe again, and the electrolyte cover that refluxes is installed to the end that negative electrode is installed tube, after tool setting is finished, drain is conducted electricity accessory is connected on the workpiece pre-threaded, compress reflux fixedly bung flange, negative electrode compress bung flange, drain is conducted electricity accessory is connected to spindle end.Can carry out Electrolyzed Processing.
During processing work, negative electrode is installed tube 2 and is installed on the machine tool guideway by anchor clamps 1, the right-hand member of workpiece 5 is packed in the shell type cathode assembly 3 and is connected with the left end of drain conduction accessory 4, workpiece 5 links to each other with machine tool chief axis by drain conduction accessory 4, machine tool chief axis drives workpiece by drain conduction accessory and makes compound motion (radially rotate and move axially), formation workpiece helical shape by predetermined helical pitch.
Claims (1)
1. the electrolytic machining device of bull arc spiral rod member, comprise negative electrode installation tube (2), be located at negative electrode the shell type cathode assembly (3) in the left part in the tube is installed, be located at negative electrode the interior electrolyte backflow cover (8) of tube right part is installed, reflux with shell type cathode assembly and electrolyte that the inwall of cover cooperates and right-hand member stretches out the reflux drain of cover of electrolyte and conducts electricity accessory (4), overlap the electrolyte system (7) that is communicated with by pipeline with shell type cathode assembly and electrolyte backflow, with drain conduction accessory and negative electrode the power supply (6) that tube is connected is installed, it is characterized in that: described shell type cathode assembly (3) is made up of cathode sheath (3-6) and the workpiece fairlead (3-1) that is located in the cathode sheath left part, be provided with the inlet opening (3-2) that is communicated with electrolyte system in cathode sheath, this inlet opening communicates with electrolyte system (7) by pipeline; In the middle part of cathode sheath (3-6), be provided with Drawing cone (3-4); The left side of Drawing cone is that commutating zone before the electrolyte, the right are commutating zone behind the electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101476384A CN102179584B (en) | 2011-06-02 | 2011-06-02 | Electrochemical machining device for multi-head arc screw rods |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101476384A CN102179584B (en) | 2011-06-02 | 2011-06-02 | Electrochemical machining device for multi-head arc screw rods |
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| CN102179584A true CN102179584A (en) | 2011-09-14 |
| CN102179584B CN102179584B (en) | 2012-11-14 |
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| CN2011101476384A Expired - Fee Related CN102179584B (en) | 2011-06-02 | 2011-06-02 | Electrochemical machining device for multi-head arc screw rods |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489803A (en) * | 2011-12-09 | 2012-06-13 | 重庆望江工业有限公司 | Electrochemical machining device for multi-taper inner bores |
| CN102501016A (en) * | 2011-11-04 | 2012-06-20 | 中国海洋石油总公司 | Method for machining all-metal screw pump stator |
| CN102528186A (en) * | 2012-02-03 | 2012-07-04 | 西安昆仑工业（集团）有限责任公司 | Cathode for electrochemical machining of screw pump metal stator |
| CN102689061A (en) * | 2012-06-19 | 2012-09-26 | 重庆望江工业有限公司 | Device for electrochemically machining inner-step small deep holes |
| CN103302367A (en) * | 2013-03-19 | 2013-09-18 | 北京航星机器制造有限公司 | Electrical discharge machining (EDM) shaping method for external spiral structure |
| CN104028862A (en) * | 2014-05-06 | 2014-09-10 | 张家港华宝机械制造有限公司 | Electrochemical machining method and machining equipment for titanium alloy slender shaft |
| CN109773291A (en) * | 2019-01-16 | 2019-05-21 | 西安工业大学 | Variable cross-section internal taper hole movable type electrolytic machining device |
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| US6543132B1 (en) * | 1997-12-18 | 2003-04-08 | Baker Hughes Incorporated | Methods of making mud motors |
| US20050077189A1 (en) * | 2003-10-09 | 2005-04-14 | Terry Lievestro | ECM trepan of bars |
| US20070140883A1 (en) * | 2003-10-09 | 2007-06-21 | Lehr Precision, Inc. | Progressive cavity pump/motor stator, and apparatus and method to manufacture same by electrochemical machining |
| CN101590552A (en) * | 2009-06-28 | 2009-12-02 | 重庆望江工业有限公司 | Deep hole internal spline electrolytic machining device |
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2011
- 2011-06-02 CN CN2011101476384A patent/CN102179584B/en not_active Expired - Fee Related
Patent Citations (4)
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| US6543132B1 (en) * | 1997-12-18 | 2003-04-08 | Baker Hughes Incorporated | Methods of making mud motors |
| US20050077189A1 (en) * | 2003-10-09 | 2005-04-14 | Terry Lievestro | ECM trepan of bars |
| US20070140883A1 (en) * | 2003-10-09 | 2007-06-21 | Lehr Precision, Inc. | Progressive cavity pump/motor stator, and apparatus and method to manufacture same by electrochemical machining |
| CN101590552A (en) * | 2009-06-28 | 2009-12-02 | 重庆望江工业有限公司 | Deep hole internal spline electrolytic machining device |
Non-Patent Citations (1)
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| 《矿山机械》 20101031 彭钢 等 螺杆钻具定子电解加工机床布局的研究 第41-43页 第38卷, 第10期 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501016A (en) * | 2011-11-04 | 2012-06-20 | 中国海洋石油总公司 | Method for machining all-metal screw pump stator |
| CN102489803A (en) * | 2011-12-09 | 2012-06-13 | 重庆望江工业有限公司 | Electrochemical machining device for multi-taper inner bores |
| CN102489803B (en) * | 2011-12-09 | 2013-09-04 | 重庆望江工业有限公司 | Electrochemical machining device for multi-taper inner bores |
| CN102528186A (en) * | 2012-02-03 | 2012-07-04 | 西安昆仑工业（集团）有限责任公司 | Cathode for electrochemical machining of screw pump metal stator |
| CN102689061A (en) * | 2012-06-19 | 2012-09-26 | 重庆望江工业有限公司 | Device for electrochemically machining inner-step small deep holes |
| CN103302367A (en) * | 2013-03-19 | 2013-09-18 | 北京航星机器制造有限公司 | Electrical discharge machining (EDM) shaping method for external spiral structure |
| CN103302367B (en) * | 2013-03-19 | 2016-06-08 | 北京航星机器制造有限公司 | A kind of external spiral structure sinker electric discharge machining method |
| CN104028862A (en) * | 2014-05-06 | 2014-09-10 | 张家港华宝机械制造有限公司 | Electrochemical machining method and machining equipment for titanium alloy slender shaft |
| CN104028862B (en) * | 2014-05-06 | 2017-02-22 | 张家港华宝机械制造有限公司 | Electrochemical machining method and machining equipment for titanium alloy slender shaft |
| CN109773291A (en) * | 2019-01-16 | 2019-05-21 | 西安工业大学 | Variable cross-section internal taper hole movable type electrolytic machining device |
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| Publication number | Publication date |
|---|---|
| CN102179584B (en) | 2012-11-14 |
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