CN101590552B - Deep hole internal spline electrolytic machining device - Google Patents

Deep hole internal spline electrolytic machining device Download PDF

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Publication number
CN101590552B
CN101590552B CN200910104227XA CN200910104227A CN101590552B CN 101590552 B CN101590552 B CN 101590552B CN 200910104227X A CN200910104227X A CN 200910104227XA CN 200910104227 A CN200910104227 A CN 200910104227A CN 101590552 B CN101590552 B CN 101590552B
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CN
China
Prior art keywords
cone
copper
guiding
working
workpiece
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CN200910104227XA
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Chinese (zh)
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CN101590552A (en
Inventor
张波
苏鹏
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重庆望江工业有限公司
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Priority to CN200910104227XA priority Critical patent/CN101590552B/en
Publication of CN101590552A publication Critical patent/CN101590552A/en
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Publication of CN101590552B publication Critical patent/CN101590552B/en

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Abstract

The invention relates a deep hole internal spline electrolytic machining device, which comprises a cathode in a preformed hole of a processed workpiece, a liquid-guiding auxiliary tool, a conductive liquid-guiding rod, and an electrolytic tank communicated with the liquid-guiding auxiliary tool and the conductive liquid-guiding rod, wherein the anode of a power supply is connected with the processed workpiece, and the cathode is connected with the conductive liquid-guiding rod. The electrolytic machining device is characterized in that the cathode has a composite structure and comprises a copper body, a front guiding part, a working cone and a rear guiding part which are matched and arranged on the copper body in turn from the left to the right, and a fluid flow regulator which is arranged in the copper body and corresponds to the working cone consisting of a working front cone and a working rear cone; and the dividing part of the working front cone and the working rear cone is provided with a vertical V-shaped rectifier liquid-increasing tank. The electrolytic machining device has the advantages that: compared with three-side feeding commutation composite cathode processing, the device reduces the cathode processing difficulty, improves the processing reliability, shortens the auxiliary invalid processing time, and has shorter process stub bars, thereby reducing the production cost.

Description

Deep hole internal spline electrolytic machining device

Technical field

The present invention relates to electrochemical Machining Technology, be specifically related to deep hole internal spline electrolytic machining device.

Background technology

In energy machinery, particularly many parts of petroleum and natural gas drill and petroleum extraction tools frequently use the deep hole internal spline structure, this deep hole internal spline is different from conventional common spline, not only length is long especially, radially tooth depth is high especially, spline tooth number is many for it, and the dimension precision requirement of the form and position tolerance of tooth and monodentate is high especially, and this has brought great difficulty to processing and manufacturing.At present, conventional processing method mainly contains: 1. planer planing operation, and efficient is low, the cost height, surface quality and position degree do not reach requirement; 2. broaching machine broaching processing, cost of charp tool height, crudy is subjected to the restriction of material hardness; 3. line cutting processing, because spline length is oversize, pull spring is difficulty very, and the process instability, uncontrollable process.

Electrolyzed Processing is a kind of manufacturing technology according to anode electrochemical solution principle removal metal material, has not limited by tool materials hardness, and machining accuracy is easy to control, the production efficiency height, cost is low, and characteristics such as instrument is lossless, is 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 internal spline Electrolyzed Processing mode is three feeding change of current composite cathode electrolysis processing methods, and is effective especially for the recessed key of processing shallow/deep groove type rectangle, but its processing back stub bar is longer; Because negative electrode is long, the initial feeding time is long, so invalid long processing time; The quantity exploration time that increases the liquid hole is long, and process increases position, liquid hole convex epirelief.But, adopting electrolytic method to carry out deep hole internal spline and be processed with many difficult points, this has just limited further applying of this technology.Difficult point mainly comprises: the one, and the Flow Field Distribution of negative electrode and surplus matching ratio are difficult for optimizing, and design initial stage trial-produce period is longer; The 2nd, the complex structure of negative electrode, difficulty of processing is higher.

Summary of the invention

The object of the invention provides a kind of deep hole internal spline electrolytic machining device, it is made easily, the energy processing length is big, the number of teeth is many, the tooth footpath is dark, and the form and position tolerance of tooth and the high splined hole of monodentate dimension precision requirement, can reduce the secondary process time, improve the working (machining) efficiency height, it is low to reduce cost, and is applicable to processing in enormous quantities.

Deep hole internal spline electrolytic machining device of the present invention comprises the negative electrode, the drain accessory that is located at the pre-hole of workpiece to be machined left part that are located at middle part, the pre-hole of workpiece to be machined, is located at workpiece to be machined pre-hole right part and an end and is connected the conduction fluid-directing rod that the other end passes the technology stub bar, the electrolysis liquid pool that is communicated with the drain accessory and the fluid-directing rod that conducts electricity with negative electrode; The technology stub bar is connected the right-hand member of workpiece to be machined, the positive pole of power supply is connected with workpiece to be machined, the negative pole of power supply is connected with the conduction fluid-directing rod, it is characterized in that: described negative electrode is a composite structure, comprise the copper body, be engaged in preceding guiding, Drawing cone and back guiding on the copper body from left to right successively, be located in the copper body and the flow quantity adjuster corresponding with Drawing cone; Described Drawing cone is bored by work inner cone and work back and is formed, and the boundary position of boring in work inner cone and work back is provided with vertical V-type rectification and increases liquid bath.

Described deep hole internal spline electrolytic machining device, also comprise be located at copper body left part and with preceding guiding near preceding bung flange, be located at copper body right part and with Drawing cone near back bung flange, the threaded cap that is connected with copper body right-hand member.

Deep hole internal spline electrolytic machining device has following feature:

(a) intermediate liquid flow regulator;

(b) than short work copper body length;

(c) negative electrode is installed in the pre-hole of workpiece;

(d) utilize the pre-hole of workpiece that the drain accessory is installed.

Radial feed is only taked at the roughing position of negative electrode (position of the inner cone correspondence of promptly working), removes most of surplus.The mode of three feedings is taked at fine finishining position (the corresponding position of awl, back of promptly working), reaches product requirement.The boundary position (thick accurately machined boundary) of boring in work inner cone and work back is provided with vertical V-type rectification and increases liquid bath, is for avoiding negative electrode oversize, increasing liquid bath and adopt vertical V-type rectification to increase liquid trough structure (also being the sector rectification form).Be to cause that for avoiding rectification to increase the liquid bath position machined surface has projection, allow roughing full-size identical during design, thereby thick fine finishining steadily is connected transition, does not cause the acute variation in flow field with the fine finishining minimum dimension.The mode that entire processing apparatus takes the pre-hole of workpiece guiding to install, therefore, guiding is stayed necessary mobile space with bore dia is consistent in advance before the negative electrode.

Electrolyte is divided into A, B two parts after entering negative electrode by the conduction fluid-directing rod, the A part flows to the roughing district by main liquid measure passage, B part flows into vertical V by the flow quantity adjuster and increases liquid bath and carry out rectification, then, liquid together with the front first piece flows to the fine finishining zone together, at last, after collecting, the drain accessory is back to the electrolysis liquid pool.

Beneficial effect of the present invention: with respect to machining, production efficiency improves 5 times, and energy consumption drops to 1/3 of machining; With respect to three feeding change of current composite cathode processing, reduced the negative electrode difficulty of processing, improved process reliability, shortened auxiliary invalid process time, the technology stub bar is shorter, thereby has reduced production cost.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the structural representation of negative electrode.

Fig. 3 is the structural representation of Drawing cone.

Fig. 4 is the left view of Fig. 3.

Fig. 5 is the A-A cutaway view of Fig. 3.

Fig. 6 is the structural representation of workpiece to be machined.

Fig. 7 is the A-A cutaway view of Fig. 6.

The specific embodiment

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, deep hole internal spline electrolytic machining device of the present invention, its negative electrode 1 is installed in the middle part in workpiece to be machined 2 pre-holes, drain accessory 3 is installed in the left part in the pre-hole of workpiece to be machined, conduction fluid-directing rod 4 is installed in the right part in workpiece to be machined 2 pre-holes, one end of conduction fluid-directing rod is connected with negative electrode 1, the other end passes technology stub bar 5, and the technology stub bar is connected the right-hand member of workpiece to be machined; Drain accessory 3 and conduction fluid-directing rod 4 are communicated with electrolysis liquid pool 6 respectively; The positive pole of power supply is connected with workpiece to be machined 2, and the negative pole of power supply is connected with conduction fluid-directing rod 4;

Described negative electrode 1 is a composite structure, comprises copper body 9, is engaged in preceding guiding 8, Drawing cone 10 and back guiding 12 on the copper body from left to right successively, is located in the copper body and the flow quantity adjuster 13 corresponding with Drawing cone; Described Drawing cone 10 is made up of work inner cone 15 and work back awl 16, is provided with vertical V-type rectification at the boundary position of work inner cone and work back awl and increases liquid bath 17;

Also comprise be located at copper body 9 left parts and with preceding guiding 8 near preceding bung flange 7, be located at copper body 9 right parts and with Drawing cone 10 near back bung flange 11, the threaded cap 14 that is connected with copper body 9 right-hand members.

Add man-hour, workpiece to be machined 2 is installed on the jig, the anchor clamps center should be consistent with the lathe Mobility Center, again negative electrode 1 is installed in the pre-hole of workpiece to be machined, after the position tool setting of adjustment initial manufacture is finished, drain accessory 3 is installed in the pre-hole of workpiece, connects return-flow catheter, set the process velocity and the amount of feeding, can carry out Electrolyzed Processing.Electrolyzed Processing is divided roughing and fine finishining, and radial feed is only taked at the roughing position, and initial flow is supplied with and improved a lot, and removes most of surplus.The mode of three feedings is taked in fine finishining, reaches product requirement.

Claims (2)

1. deep hole internal spline electrolytic machining device comprises the negative electrode (1), the drain accessory (3) that is located at the pre-hole of workpiece to be machined (2) left part that are located at middle part, the pre-hole of workpiece to be machined (2), is located at the pre-hole right part of workpiece to be machined (2) and an end and is connected the conduction fluid-directing rod (4) that the other end passes technology stub bar (5), the electrolysis liquid pool (6) that is communicated with the drain accessory (3) and the fluid-directing rod (4) that conducts electricity with negative electrode (1); Technology stub bar (5) is connected the right-hand member of workpiece to be machined (2), the positive pole of power supply is connected with workpiece to be machined (2), the negative pole of power supply is connected with conduction fluid-directing rod (4), it is characterized in that: described negative electrode (1) is a composite structure, comprise copper body (9), be engaged in preceding guiding (8), Drawing cone (10) and back guiding (12) on the copper body from left to right successively, be located in the copper body (9) and the flow quantity adjuster (13) corresponding with Drawing cone (10); Described Drawing cone (10) is made up of work inner cone (15) and work back awl (16), is provided with vertical V-type rectification at the boundary position of inner cone with work back awl of working and increases liquid bath (17).
2. deep hole internal spline electrolytic machining device according to claim 1 is characterized in that: also comprise be located at copper body (9) above the left part and with preceding guiding (8) near preceding bung flange (7), be located at copper body (9) above the right part and with Drawing cone (10) near back bung flange (11), the threaded cap (14) that is connected with copper body (9) right-hand member.
CN200910104227XA 2009-06-28 2009-06-28 Deep hole internal spline electrolytic machining device CN101590552B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910104227XA CN101590552B (en) 2009-06-28 2009-06-28 Deep hole internal spline electrolytic machining device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910104227XA CN101590552B (en) 2009-06-28 2009-06-28 Deep hole internal spline electrolytic machining device

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CN101590552A CN101590552A (en) 2009-12-02
CN101590552B true CN101590552B (en) 2011-06-22

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102773573B (en) * 2011-05-13 2014-09-03 北京市电加工研究所 Electric spark deep blind hole machining device
CN102179584B (en) * 2011-06-02 2012-11-14 重庆望江工业有限公司 Electrochemical machining device for multi-head arc screw rods
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
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
CN102896383B (en) * 2012-10-10 2015-03-25 南京航空航天大学 Electrolytic machining method of difficult-to-cut material, fine-module internal gear and device
CN103737131B (en) * 2014-01-22 2017-01-18 西安工业大学 Composite cathode of closed whole component flow channel
CN108284257A (en) * 2018-01-31 2018-07-17 西安工业大学 The square hole precision ECM processing unit (plant) of big L/D ratio
CN109500462A (en) * 2018-11-29 2019-03-22 广东工业大学 A kind of intermittent impulse electrolytic machining device and internal key groove processing method
CN111375850A (en) * 2020-04-01 2020-07-07 南京浦航机械科技开发有限公司 Multi-station synchronous precise electrolytic forming processing device and method for involute internal spline

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