CN203356785U - Electric spark machining device for local thinning of sheet part with complex shape - Google Patents
Electric spark machining device for local thinning of sheet part with complex shape Download PDFInfo
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- CN203356785U CN203356785U CN 201320391330 CN201320391330U CN203356785U CN 203356785 U CN203356785 U CN 203356785U CN 201320391330 CN201320391330 CN 201320391330 CN 201320391330 U CN201320391330 U CN 201320391330U CN 203356785 U CN203356785 U CN 203356785U
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- sheet member
- hollow out
- flat board
- out flat
- sheet part
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- 238000003754 machining Methods 0.000 title claims abstract description 33
- 238000010892 electric spark Methods 0.000 title abstract description 22
- 230000009467 reduction Effects 0.000 claims description 23
- 230000002787 reinforcement Effects 0.000 claims description 15
- 238000013461 design Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 26
- 230000008569 process Effects 0.000 abstract description 20
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 238000012545 processing Methods 0.000 description 32
- 238000005520 cutting process Methods 0.000 description 7
- 238000009760 electrical discharge machining Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000003801 milling Methods 0.000 description 6
- 230000003447 ipsilateral effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000005518 electrochemistry Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The utility model discloses an electric spark machining device for local thinning of a sheet part with a complex shape, and belongs to the field of machining of sheet parts. The electric spark machining device for local thinning of the sheet part with the complex shape comprises a reference element, screws, twp pierced panels, locating pins and a base. The electric spark machining device for local thinning of the sheet part with the complex shape is characterized in that the upper pierced panel and the lower pierced panel are used for pressing a non-machining area of the sheet part and a reinforcing rib, locating is carried out, then, the upper pierced panel, the lower pierced panel and the sheet part are tightly clamped to form a rigid body, and are clamped on the base in a locating mode, alternate thinning electric spark machining is carried out on the obverse side and the reverse side of the sheet part through an integral electrode, finally, the reinforcing rib is removed, and the final part is obtained. The electric spark machining device for local thinning of the sheet part with the complex shape effectively solves the problem that the sheet part deforms in the process of thinning machining, and thinning machining accuracy of the sheet part is improved.
Description
Technical field
The utility model relates to a kind of complicated shape sheet member local reduction electric discharge machining apparatus, and it belongs to the processing technique field of thin plate thin-wall part.
Background technology
Be all to use in a large number the thin plate thin-wall part in the standard machinery field or at aerospace field at present, such part has following characteristics usually: wall is thin, a little less than rigidity, and very easily distortion in process; Required precision is high, and the critical size precision is the IT5-IT2 level, more than crucial accuracy of form and position 5-3 level.
Due to the application reason, the physical indexs such as meeting its shape, thickness, precision and quality of take during engineering design is primary and foremost purpose.Thereby be subject to the restriction of shape and quality, and part strength can meet instructions for use, and stiffness index but usually is left in the basket or considers not.These precision components are to use under assembled state, and rigidity does not generally have much impacts to its application, but concerning production and processing, is very disadvantageous.
Processing for this class thin plate thin-walled parts at present mainly contains Milling Process, Electrolyzed Processing and spark machined.
Milling Process can process accurate profile and smooth surface, and material removing rate is higher, and especially high-speed milling, have efficiently, and the workpiece temperature rise is little, the advantage that contact force is little.But Milling Process is contact processing all the time, due to the not enough 0.5mm of some sheet member thickness, even if less Milling Force, or to sheet member, distortion has produced certain influence; Simultaneously, part material mostly is difficult-to-machine material, and weakened region is complex-shaped, and excessively fillet is very little, and during Milling Process, cutter requires highly, and cutter path is more complicated.
Electrolyzed Processing is based on the Anodic solution principle and removes material, is not subject to the restriction of metal material hardness and intensity, and process velocity is fast, and tool cathode is lossless.But Electrolyzed Processing is difficult to the stable high accuracy that obtains.For complex-shaped, required precision very high sheet member again, adopt Electrolyzed Processing, its technique research and development cycle is longer, comparatively suitable for producing in enormous quantities.
Spark-erosion sinking processing is by spark discharge ablation material, the machinability of material and its mechanical property are irrelevant, be suitable for the difficult processing cutting metal material, add man-hour because electrode does not contact with workpiece, therefore there is no macroscopical cutting force, the clamping force of clamping process can be very little, basically can ignore and clamp distortion, and the rigidity part is hanged down in suitable processing; Attenuate processing for the Complicated plates part can design overall electrode, uses one group of electrical guiding rule, completes the processing of all weakened region simultaneously, under the prerequisite that guarantees surface quality and machining accuracy, has improved process velocity; The spark-erosion sinking processing technology R&D cycle is shorter, can the fast responding market demand, be suitable for small lot batch manufacture.
Summary of the invention
The utility model provides a kind of complicated shape sheet member local reduction electric discharge machining apparatus, has realized the high accuracy processing to the Complicated plates part, has solved the problem that sheet member is out of shape in the attenuate process.
The utility model adopts following technical scheme: a kind of complicated shape sheet member local reduction electric discharge machining apparatus, it comprises reference element, electrode, the first screw, the second screw, the first hollow out flat board, the second hollow out flat board, alignment pin and base, described electrode is connected and is held on machine tool chief axis with reference element, described sheet member is pressed between described the first hollow out flat board and the second hollow out flat board, described alignment pin is by described sheet member, make sheet member by described the second screws clamp behind the first hollow out flat board and the dull and stereotyped location of the second hollow out, the first hollow out flat board and the second hollow out flat board become a rigid body, described sheet member, the first hollow out flat board and the second hollow out flat board are positioned on described base by described the first screws clamp.
Described hollow out flat board, refer to the dull and stereotyped up and down of pressure holding sheet member, go out corresponding machining area according to the different regional hollow outs to be processed of sheet member positive and negative respectively, sheet member is all pressed to strengthen the rigidity of sheet member in all the other positions, thereby reduces the distortion of part work in-process.
Described reference element, refer to a reference block that starts just to be connected with electrode all the time from electrode blank, by the reference element positioning and clamping being guaranteed on reference seat to the unified benchmark of whole process, thereby guarantee the electrode accuracy of manufacture and sheet member Accuracy of finish.
Described complicated shape sheet member local reduction electric discharge machining apparatus also includes after analyzing the low rigidity position and zone to be processed that sheet member exists, at the reinforcement of periphery of part and indoor design, described the first hollow out flat board and the second hollow out flat board are pushed down described reinforcement fully.
The utility model also adopts following technical scheme: a kind of complicated shape sheet member local reduction electrical discharge machining process, it comprises the steps:
(1) require to carry out the plate blanking or directly adopt the sheet member that meets thickness requirement according to accessory size;
(2) sheet member is gone out to part complicated shape and corresponding reinforcement by the silk thread cutting processing of being careful;
(3) sheet member is carried out to electrochemistry destressing processing;
(4) design respectively the whole machined electrode of obverse and reverse according to shape and the distribution in sheet member tow sides zone to be processed;
(5) with positive whole machined electrode, electric spark roughing is carried out in the sheet member front, then rigid body the first hollow out is dull and stereotyped, that the second hollow out is dull and stereotyped and sheet member forms overturns, location is clamped on base, then with the whole machined electrode of reverse side, the sheet member reverse side is carried out to electric spark roughing;
(6) with the whole machined electrode of reverse side, the sheet member reverse side is carried out to electric spark semifinishing and fine finishining, then by the dull and stereotyped rigid body upset formed with sheet member of hollow out, location is clamped on base, then with positive whole machined electrode, electric spark semifinishing and fine finishining is carried out in the sheet member front;
(7) remove reinforcement with the silk thread cutting of being careful and obtain final sheet member finished product.
Described complicated shape sheet member local reduction electrical discharge machining process, whole process is from processing sheet part complicated shape and reinforcement, to the sheet member tow sides being carried out to the processing of electric spark local reduction, finally removing reinforcement, all to have adopted unified positioning datum be plane and two pits, thereby guaranteed machining accuracy.
Described the sheet member tow sides are replaced to electric spark attenuate processing, can avoid adding and changing because of surface stress the distortion caused man-hour in ipsilateral local reduction not.
The roughing of described sheet member, semifinishing and fine finishining by adopting same electrode constantly to reduce electrical guiding rule when the machine direction feeding with the finished surface that on repairing, once electrical guiding rule forms, establishing the amount of feeding are
, this time discharging gap corresponding to electrical guiding rule is
, this time metamorphic layer corresponding to electrical guiding rule is
, total processing removal amount is
, primary clearance is
,
(
=0.001mm-0.05mm).
Described sheet member being carried out to electrochemistry destressing processing, is in order to eliminate the sheet member surface residual stress, prevents that sheet member from adding man-hour at ipsilateral attenuate not, causes part deformation because surface residual stress changes.
The utlity model has following beneficial effect:
(1) use the dull and stereotyped pressure holding sheet member of upper and lower hollow out when clamping, the effectively distortion of sheet member in the controlled working process; The sheet member tow sides are replaced to electric spark attenuate processing simultaneously, avoid adding and changing because of surface stress the distortion caused man-hour in ipsilateral local reduction not;
(2) use overall electrode to carry out the processing of electric spark attenuate to sheet member front or all zones to be processed of reverse side simultaneously, improved working (machining) efficiency; Adopt that two hollow outs are dull and stereotyped is fixed as the installation way of a rigid body with workpiece, effectively improved the efficiency that changes the outfit of inter process;
(3) in attenuate processing, use same electrode pair machined surface to carry out electric spark roughing, semifinishing and fine finishining have improved process velocity under the prerequisite that guarantees machining accuracy and surface quality.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model complicated shape sheet member local reduction electric discharge machining apparatus.
The generalized section that Fig. 2 is the sheet member of the utility model complicated shape shown in Fig. 1 local reduction electric discharge machining apparatus.
Fig. 3 is positive whole machined electrode schematic perspective view.
Fig. 4 is the whole machined electrode schematic perspective view of reverse side.
The structural representation that Fig. 5 is location-plate.
The sheet member finished product schematic diagram of Fig. 6 for using the utility model complicated shape sheet member local reduction electric discharge machining apparatus to process.
Fig. 7 is at the sheet member schematic diagram that carries out local electric spark attenuate first being processed.
Wherein:
Reference element-1, electrode-2, the first screw-3, the second screw-4, the first hollow out dull and stereotyped-5, sheet member-6, the second hollow out flat board-7, alignment pin-8, base-9, sheet member finished product-10, location-plate-11, pin-and-hole-12, screwed hole-13, workpiece coordinate system alignment holes-14, reinforcement-15.
The specific embodiment
Please refer to shown in Fig. 1 and Fig. 2, the utility model complicated shape sheet member local reduction electric discharge machining apparatus, comprise reference element 1, the first screw 3, the second screw 4, the first hollow out flat board 5, the second hollow out flat board 7, alignment pin 8 and base 9, in the middle of with dull and stereotyped the 5 and second hollow out flat board 7 of the first hollow out, sheet member 6 being pressed in, with alignment pin 8, the three being located to rear use the second screw 4 clampings makes the three become a rigid body, extract alignment pin 8, with alignment pin 8, the three is positioned on base 9 again, with the first screw 3, clamp, electrode 2 is connected and is held on machine tool chief axis (not shown) with reference element 1.
Wherein reference element 1, refer to a reference block that starts just to be connected with electrode all the time from electrode blank, by the reference element positioning and clamping being guaranteed on reference seat to the unified benchmark of whole process, thereby guarantee the electrode accuracy of manufacture and sheet member Accuracy of finish.
Wherein dull and stereotyped the 5 and second hollow out flat board 7 of the first hollow out refers to the dull and stereotyped up and down of pressure holding sheet member 6, go out corresponding machining area according to the different regional hollow outs to be processed of sheet member positive and negative respectively, sheet member is all pressed to strengthen the rigidity of sheet member in all the other positions, thereby reduces the distortion of part work in-process.
More than wherein dull and stereotyped the 5 and second hollow out flat board 7 of the first hollow out can be made two covers, guarantee upper once machine after, the integral body that the lower a set of locating clip that can change the outfit rapidly pulls tight, thus improve the efficiency that changes the outfit.
Please refer to shown in Fig. 3 and Fig. 4, shape and distribution according to sheet member tow sides zone to be processed in the utility model design respectively the whole machined electrode of obverse and reverse.
Please refer to shown in Fig. 5, the utility model complicated shape sheet member local reduction electric discharge machining apparatus also includes location-plate 11, by polylith sheet member 6 neatly is stacked on location-plate 11, unified to locate rear clamping with pin, location-plate is arranged on lathe benchmark interface, the sheet member 6 use silk thread cutting processing of being careful is gone out to part complicated shape and corresponding reinforcement.Wherein location-plate 11 refers to that one clamps for locating the flat board that sheet member 6 is carried out slow wire feeding processing, comprises the pin-and-hole 12 for the sheet member location, for screwed hole 13 and the workpiece coordinate system alignment holes 14 that clamps sheet member on location-plate 11.
Please refer to shown in Fig. 6 and Fig. 7, reinforcement 15, refer to behind the low rigidity position and zone to be processed of analyzing the sheet member existence, strengthen structure in periphery of part technique corresponding to indoor design, when clamping, with upper and lower flat board, reinforcement 15 total heads are lived, strengthened the integral rigidity of sheet member, thereby reduced the distortion of part in process.
Please refer to Fig. 1 to Fig. 2 and in conjunction with shown in Fig. 3 to Fig. 7, the utility model complicated shape sheet member local reduction electrical discharge machining process, concrete steps are as follows:
(1), according to accessory size, require to carry out the plate blanking or directly adopt the sheet member that meets thickness requirement;
(2), the polylith sheet member neatly is stacked on location-plate, with pin, unified to locate rear clamping, location-plate is arranged on lathe benchmark interface, sheet member is gone out to part complicated shape and corresponding reinforcement by the silk thread cutting processing of being careful;
(3), behind cleaning sheet member surface, use method for electrochemical machining to remove surface stress;
(4), according to shape and the distribution in sheet member tow sides zone to be processed, design respectively the whole machined electrode of obverse and reverse;
(5), with positive whole machined electrode, coordinate the roughing electrical guiding rule to carry out electric spark roughing to the sheet member front, then by the first hollow out flat board 5, the second hollow out dull and stereotyped 7 is overturn with the rigid body that sheet member 6 forms, location is clamped on base 9, then coordinates the roughing electrical guiding rule to carry out electric spark roughing to sheet member 6 reverse side with the whole machined electrode of reverse side;
(6), with the whole machined electrode of reverse side, coordinate the electrical guiding rule successively reduced to carry out electric spark semifinishing and fine finishining to sheet member 6 reverse side, then by the first hollow out flat board 5, the second hollow out dull and stereotyped 7 is overturn with the rigid body that sheet member 6 forms, location is clamped on base 9, with positive whole machined electrode, coordinates the electrical guiding rule successively reduced to carry out electric spark semifinishing and fine finishining to the sheet member front;
(7), sheet member that polylith is machined in earlier stage neatly is stacked on location-plate, with pin, unified to locate rear clamping, and location-plate is arranged on lathe benchmark interface, with the silk thread cutting of being careful, removes peripheral reinforcement, obtains final sheet member finished product.
The utility model sheet member local reduction electrical discharge machining process, whole process is from processing sheet part complicated shape and reinforcement, to the sheet member tow sides are carried out to electric spark local reduction, finally removing reinforcement, all to have adopted unified positioning datum be plane and two pits, thereby guaranteed machining accuracy.
The utility model replaces electric spark attenuate processing to the sheet member tow sides, can avoid adding and changing because of surface stress the distortion caused man-hour in ipsilateral local reduction not.
The roughing of the utility model to sheet member, semifinishing and fine finishining by adopting same electrode constantly to reduce electrical guiding rule when the machine direction feeding with the finished surface that on repairing, once electrical guiding rule forms, establishing the amount of feeding are
, this time discharging gap corresponding to electrical guiding rule is
, this time metamorphic layer corresponding to electrical guiding rule is
, total processing removal amount is
, primary clearance is
,
(
=0.001mm-0.05mm).
In the utility model, sheet member being carried out to electrochemistry destressing processing, is in order to eliminate the sheet member surface residual stress, prevents that sheet member from adding man-hour at ipsilateral attenuate not, because surface residual stress changes, causes part deformation.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art, under the prerequisite that does not break away from the utility model principle, can also make some improvement, these improvement also should be considered as protection domain of the present utility model.
Claims (3)
1. a complicated shape sheet member local reduction electric discharge machining apparatus, it comprises reference element, electrode, the first screw, the second screw, the first hollow out flat board, the second hollow out flat board, alignment pin and base, it is characterized in that: described electrode is connected and is held on machine tool chief axis with reference element, described sheet member is pressed between described the first hollow out flat board and the second hollow out flat board, described alignment pin is by described sheet member, make sheet member by described the second screws clamp behind the first hollow out flat board and the dull and stereotyped location of the second hollow out, the first hollow out flat board and the second hollow out flat board become a rigid body, described sheet member, the first hollow out flat board and the second hollow out flat board are positioned on described base by described the first screws clamp.
2. complicated shape sheet member as claimed in claim 1 local reduction electric discharge machining apparatus, it is characterized in that: described the first hollow out is dull and stereotyped goes out corresponding machining area with the second hollow out flat board according to the different regional hollow outs to be processed of sheet member positive and negative, and sheet member is all pressed in all the other positions.
3. complicated shape sheet member as claimed in claim 2 local reduction electric discharge machining apparatus, it is characterized in that: described complicated shape sheet member local reduction electric discharge machining apparatus also includes after analyzing the low rigidity position and zone to be processed that sheet member exists, at the reinforcement of periphery of part and indoor design, described the first hollow out flat board and the second hollow out flat board are pushed down described reinforcement fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320391330 CN203356785U (en) | 2013-07-03 | 2013-07-03 | Electric spark machining device for local thinning of sheet part with complex shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320391330 CN203356785U (en) | 2013-07-03 | 2013-07-03 | Electric spark machining device for local thinning of sheet part with complex shape |
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| Publication Number | Publication Date |
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| CN203356785U true CN203356785U (en) | 2013-12-25 |
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| CN 201320391330 Expired - Lifetime CN203356785U (en) | 2013-07-03 | 2013-07-03 | Electric spark machining device for local thinning of sheet part with complex shape |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341671A (en) * | 2013-07-03 | 2013-10-09 | 南京航空航天大学 | Device and process for local thinning electric spark machining on complicated shape sheet piece |
| CN103949732A (en) * | 2014-04-29 | 2014-07-30 | 江苏森威集团飞达股份有限公司 | Device for forging and processing special-shaped male die corner and processing method thereof |
| CN105436639A (en) * | 2014-08-13 | 2016-03-30 | 常州兰翔机械有限责任公司 | Electrode device for electroimpulse machining of locking plate grooves and machining method |
-
2013
- 2013-07-03 CN CN 201320391330 patent/CN203356785U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341671A (en) * | 2013-07-03 | 2013-10-09 | 南京航空航天大学 | Device and process for local thinning electric spark machining on complicated shape sheet piece |
| CN103341671B (en) * | 2013-07-03 | 2015-10-28 | 南京航空航天大学 | A kind of complicated shape sheet member local reduction's electric discharge machining apparatus and processing technology |
| CN103949732A (en) * | 2014-04-29 | 2014-07-30 | 江苏森威集团飞达股份有限公司 | Device for forging and processing special-shaped male die corner and processing method thereof |
| CN105436639A (en) * | 2014-08-13 | 2016-03-30 | 常州兰翔机械有限责任公司 | Electrode device for electroimpulse machining of locking plate grooves and machining method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |