CN101767230B - Machining method of steel mould cavity - Google Patents
Machining method of steel mould cavity Download PDFInfo
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- CN101767230B CN101767230B CN200910184508A CN200910184508A CN101767230B CN 101767230 B CN101767230 B CN 101767230B CN 200910184508 A CN200910184508 A CN 200910184508A CN 200910184508 A CN200910184508 A CN 200910184508A CN 101767230 B CN101767230 B CN 101767230B
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- mold cavity
- steel mold
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Abstract
The invention discloses a machining method of a steel mould cavity. The machining method comprises the four steps of: manufacturing an electrolysis cathode by utilizing the combination of a photocuring rapid prototyping technology and an electrotyping technology, building an electrolysis machining device, building an electrolyte system and forming the steel mould cavity. The machining method has the advantages that: compared with the traditional method for manufacturing an electric spark tool electrode or the electrolysis cathode, the rapid prototyping method for manufacturing the electrolysis cathode saves a cutting machine tool, a numerical control machine tool and properties and has high production efficiency, low cost as well as good precision and surface quality; in addition, the production efficiency of electrolysis machining is high, which is about 5 to 10 times of the electric spark machining and higher than the production efficiency of cutting machining, and the machining production rate is not restricted by the machining precision and the surface roughness; and the invention can reach good surface roughness and machining precision.
Description
Technical field
The present invention relates to the manufacture field of swaging die, particularly the processing method of steel mold cavity.
Background technology
In the current manufacturing industry, mould (comprising stamping die, plastics mould, forging die, mold, metal crimp mold, powder metallurgy mould etc.) is to guarantee the indispensable part of product manufacturing as important technological equipment.
In all kinds of moulds again with steel the most difficult manufacturing of swaging die of (comprising various special tool steel, steel alloy, even carbide alloy etc.).Along with manufacturing develop rapidly, be the manufacturing complicated shape, and hardness, intensity is high; The product parts that toughness is strong, to the precision of mould, surface smoothness requires increasingly high, requires the life-span of mould more and more longer; Require the production cycle of mould shorter and shorter, require the production efficiency of mould increasingly high, require the production cost of mould low more good more, some mould since to its specific (special) requirements (like narrow groove; Abnormity aperture etc.), make it very difficult, even can't make.
Steel mold cavity belongs to the blind hole die cavity; Current manufacturing approach often earlier with traditional cutting working method (comprise and use the numerical control machining center of five coordinates interlock to carry out cut), is stayed suitable allowance; After quenching, carry out a spark processing blind hole die cavity with tool-electrode.Spark machined has two fatal shortcomings: the one, and spark machined belongs to edm; Its tool-electrode is lossy; In order to guarantee the precision of mold cavity, just must process same die cavity with a plurality of tool-electrodes, promptly time-consuming; Cost is increased doublely, and machining accuracy is difficult to guarantee; The 2nd, the process velocity of spark machined is very slow, removes most of surplus earlier so have to adopt cut (comprising that the interlocked numerical controlled machining center of five coordinates carries out cut) to be given, and then carries out spark machined in the hope of enhancing productivity.
Summary of the invention
To the deficiency of above-mentioned prior art, the present invention provides a kind of method of utilizing photocureable rapid shaping technology, galvanoplastics to combine with electrochemical Machining Technology to come the machined steel model cavity.
The processing method of steel mold cavity is characterized in that, comprises the steps:
1) foundry goods is treated in making:
A, utilize graphics software to realize the three-dimensionalreconstruction of mold cavity;
B, convert the STL formatted file to, handle the formatted file that generates the light-curing rapid forming equipment acquiescence, be input in the light-curing rapid forming equipment through hierarchy slicing with the solid data of above-mentioned three-dimensionalreconstruction;
C, light-curing rapid forming equipment receive the instruction of input, produce the colophony prototype of required mold cavity;
D, with above-mentioned colophony prototype conduction processing;
E, the colophony prototype after will the conduction processing be through washing, behind degreasing, secondary water washing, acid-wash activation, three washings, the dipping mould release again the washing back as treating foundry goods;
2) set up the electroforming process equipment:
Described electroforming process equipment comprises: dc source, work box, master mold, workbench, agitator, explosion protection system and control system;
3) set up the electroforming solution system:
Described electroforming solution system comprises: electroforming solution, electroforming liquid bath, pump and filter; Described pump and filter and electroforming solution device are in the electroforming liquid bath, and described pump is connected with filter;
4) form the electrolysis cathode prototype:
Treat foundry goods as negative electrode attached on the master mold, insert in the work box; Treat that foundry goods negative electrode, anode are connected with dc source respectively; Described agitator is installed in the inside of work box; Described electroforming solution is driven through filter by pump and to filter in the electroforming liquid bath, and the electroforming solution after the filtration flows in the work box, with anode, treat that the foundry goods negative electrode soaks, under the effect of control system, carries out electroforming processing, forms required electrolysis cathode prototype; The H that produces in the electroforming process
2Get rid of by explosion protection system;
5) the electrolysis cathode prototype is carried out the non-working surface insulation processing;
6) set up Electrolyzed Processing equipment:
Described Electrolyzed Processing equipment comprises: main shaft, workbench, work box, feed system, control system, dc source and fast short-circuit protective device;
7) set up electrolyte system:
Described electrolyte system comprises: electrolyte, pump, sedimentation basin and filtering ponds;
8) form steel mold cavity:
Workpiece is fixed on the workbench as anode; Electrolyte between dc source, workpiece anode and anode, negative electrode forms current channel; By the control systemic effect, when the gap between anode and the negative electrode reaches processing conditions, just formed pulse current, the dutycycle of control impuls electric current is carried out Electrolyzed Processing; Described feed system drives main shaft, and main shaft drives electrolysis cathode and pumps; Said electrolyte, is driven through filter by pump and to filter again in filtering ponds through sedimentation basin deposition, flow between electrolysis cathode and the workpiece negative electrode to constitute the workspace, in the workspace, the workpiece anode is processed, and obtains required steel mold cavity; Main shaft, electrolysis cathode, workpiece anode and electrolyte are enclosed in the work box.
Described light-curing rapid forming equipment is selected for use: lasing light emitter is the solid state laser of 230～355nm wavelength;
Described light-curing rapid forming equipment adopts following control parameter:
Fill sweep speed: Vs
1=5000mm/s;
Profile scan speed: Vs
2=3000mm/s;
Sweep span: Gs=0.1mm;
Bed thickness: Lh=0.1mm;
Spot diameter: D
1=0.2mm;
Described graphics software is selected any in CAD, CAM, Pro/ENGINEER or the SolidWorks software for use;
Described hierarchy slicing is handled and is selected Rpdata software for use;
At least a in chemical silver spray or the Tu Yiyin lacquer selected in described conduction processing for use;
Described electroforming solution is selected CuSO for use
45H
2O, H
2SO
4Compound electroforming solution with solid particle;
Described CuSO
45H
2The concentration of O is 70～250g/l, H
2SO
4Concentration be 50～200g/l;
Described solid particle is selected at least a in carborundum, titanium dioxide two aluminium or the molybdenum bisuphide for use;
Described dipping mould release is selected potassium bichromate for use;
Described dc source is selected the high-power integrated package IGBT pulse power of being furnished with the short-circuit rapid cut-off device for use;
Described electrolyte is selected NaNo for use
3With Na
2SO
4, Na
2CO
3Or NaClO
3Mixed solution, NaNo
3Concentration is 10～17%;
Its dutycycle of described pulse current is 1: 3～5;
Described electrolyte flow mode is: at least a in forward flow, reverse flow or the lateral flow;
The material selection of described workbench: at least a in granite, marble, anti-corrosion cement or the epoxy resin.
Beneficial effect of the present invention:
One, treat foundry goods with the quick molding method making, than make edm tool electrode or electrolysis cathode effect with conventional method, saved stock-removing machine, Digit Control Machine Tool and cutter, production efficiency is high, cost is low, and precision and surface quality are good;
Two, replace the electric spark method to make with electrolytic method and have following advantage:
1, the production efficiency of Electrolyzed Processing is high, is about 5～10 times of spark machined, and is also higher than the production efficiency of cut, and processing throughput does not receive the restriction of machining accuracy and surface roughness;
2, can reach good surface roughness (the average machining accuracy about Ra1.25～0.2um) and ± 0.1mm.
3, owing to do not have machine cut power in the process,, there is not burr so can not produce by caused residual stress of cutting force and distortion;
4, not loss of cathode tool in the process can be used for a long time, and cost reduces.
Three, make electrolysis cathode with electrocasting method, precision is high, metal compaction, and electrolysis effectiveness is good.
Description of drawings
Fig. 1 is a process chart of the present invention;
Fig. 2 is electroforming processing sketch map;
Fig. 3 Electrolyzed Processing flow chart.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is done detailed explanation, but the present invention is not limited thereto embodiment.
With the example that is processed as of aircraft cladding element punching mould, its procedure of processing is following:
1) foundry goods is treated in making:
A, utilize the CAD graphics software to realize the three-dimensionalreconstruction of mold cavity;
B, convert the STL formatted file to, generate the formatted file of light-curing rapid forming equipment acquiescence, be input in the light-curing rapid forming equipment through Rpdata software hierarchy slicing treatment with the solid data of above-mentioned three-dimensionalreconstruction;
Described STL formatted file is the applied normative document type of rapid prototyping system, for example common TXT file.
C, light-curing rapid forming equipment receive the instruction of input, produce the colophony prototype of required mold cavity;
D, above-mentioned colophony prototype is carried out chemical silver spray handle;
E, the colophony prototype water flushing after will the conduction processing, with get rid of spray silver handle in residual medicament and granulometric impurity; Cleaned colophony prototype is carried out ungrease treatment, to remove grease class spot attached to the surface; Carry out acid-wash activation after the secondary water washing, to keep working as colophony prototype as treating that foundry goods can better adsorb the metal ion in the electroforming solution; Again with after three washings of the colophony prototype behind degreasing and the acid-wash activation; Make that as dipping mould release process resin prototype electroformed layer can separate with master mold smoothly after electroforming is accomplished with potassium bichromate, after above-mentioned steps finishes; Washing obtains treating foundry goods once more, inserts rapidly in the electroforming solution of work box;
2) set up the electroforming process equipment:
Described electroforming process equipment comprises: dc source 7, master mold 5, work box 10, workbench 14, agitator 9, explosion protection system 8, control system 11;
3) set up the electroforming solution system:
Described electroforming system comprises: electroforming solution 2, electroforming liquid bath 1, pump 3, filter 4;
Described pump 3, filter 4 and electroforming solution 2, device is in electroforming liquid bath 1, and described pump 3 is connected with filter 4;
Described electroforming solution is selected for use: the CuSO of 70g/l
45H
2O, the H of 150g/l
2SO
4
4) form the electrolysis cathode prototype:
Treat foundry goods 6 as negative electrode attached on the master mold 5, insert in the work box 10; Treat that foundry goods negative electrode 6 is connected with dc source 7 with anode 13; Described agitator 9 is installed in the inside of work box 10; Described electroforming solution 2 is in electroforming liquid bath 1; Drive through filter 4 filtrations by pump 3; Electroforming solution 2 after the filtration flows in the work box 10 anode 13, treat that foundry goods negative electrode 6 is immersed under the effect of control system 11 carries out electroforming processing, forms required electrolysis cathode prototype; The H that produces in the electroforming process
2Get rid of by explosion protection system 8;
5) the electrolysis cathode prototype processing of painting enamel metal ware;
6) set up Electrolyzed Processing equipment:
Described process equipment comprises: main shaft 15, workbench 16, work box 17, feed system 18, control system 19, dc source 20, fast short-circuit protective device 30;
7) set up electrolyte system:
Described electrolyte system comprises: concentration is 15% NaNo
3With NaClO
3Composite electrolyte 21, pump 22, filter 23, sedimentation basin 24 and filtering ponds 25; Described sedimentation basin 24 is connected with filtering ponds 25, and described pump 22 is connected with filter 23, is installed in filtering ponds 25 inside;
4) form steel mold cavity
Workpiece is fixed on the workbench 16 as anode 26; The mixed electrolytic solution 21 that dc source 20, workpiece anode 26 and anode 26, electrolysis cathode are 27 forms current channels; Described rapid protecting device 30 is in order to the work of protection dc source 20; By 19 effects of control system, when the gap between anode 26 and the negative electrode 27 reaches processing conditions, just formed pulse current, the dutycycle of control impuls electric current is 1: 5, carries out Electrolyzed Processing; Described feed system 18 drives main shaft 15, and main shaft 15 drives electrolysis cathode 27 and pumps; Described electrolyte 21 is through sedimentation basin 24; Oarse-grained contamination precipitation in sedimentation basin 24; Enter into filtering ponds 25, electrolyte 21 enters into the filter 23 that is connected with pump 22 by pump 22 drives and filters once more, enters into to constitute workspace 28 between electrolysis cathode 27 and the workpiece anode 26; In workspace 28, workpiece anode 26 is carried out Electrolyzed Processing, obtain required steel mold cavity; The H that generates in the electrolytic process
2Get rid of by explosion protection system 29; Main shaft 15, electrolysis cathode 27, workpiece anode 26 and electrolyte 21 are enclosed in the work box 17.
Described light-curing rapid forming equipment is selected for use: lasing light emitter is the solid state laser of 230～355nm wavelength;
Described light-curing rapid forming equipment adopts following control parameter:
Fill sweep speed: Vs
1=5000mm/s;
Profile scan speed: Vs
2=3000mm/s;
Sweep span: Gs=0.1mm;
Bed thickness: Lh=0.1mm;
Spot diameter: D
1=0.2mm.
Claims (15)
1. the processing method of steel mold cavity is characterized in that, comprises the steps:
1) foundry goods is treated in making:
A, utilize graphics software to realize the three-dimensionalreconstruction of mold cavity;
B, convert the STL formatted file to, handle the formatted file that generates the light-curing rapid forming equipment acquiescence, be input in the light-curing rapid forming equipment through hierarchy slicing with the solid data of above-mentioned three-dimensionalreconstruction;
C, light-curing rapid forming equipment receive the instruction of input, produce the colophony prototype of required mold cavity;
D, with above-mentioned colophony prototype conduction processing;
E, the colophony prototype after will the conduction processing be through washing, behind degreasing, secondary water washing, acid-wash activation, three washings, the dipping mould release again the washing back as treating foundry goods;
2) set up the electroforming process equipment:
Described electroforming process equipment comprises: dc source, work box, master mold, workbench, agitator, explosion protection system and control system;
3) set up the electroforming solution system:
Described electroforming solution system comprises: electroforming solution, electroforming liquid bath, pump and filter; Described pump and filter and electroforming solution device are in the electroforming liquid bath, and described pump is connected with filter;
4) form the electrolysis cathode prototype:
Treat foundry goods as negative electrode attached on the master mold, insert in the work box; Treat that foundry goods negative electrode, anode are connected with dc source respectively; Described agitator is installed in the inside of work box; Described electroforming solution is driven through filter by pump and to filter in the electroforming liquid bath, and the electroforming solution after the filtration flows in the work box, with anode, treat that the foundry goods negative electrode soaks, under the effect of control system, carries out electroforming processing, forms required electrolysis cathode prototype; The H2 that produces in the electroforming process is got rid of by explosion protection system;
5) the electrolysis cathode prototype is carried out the non-working surface insulation processing;
6) set up Electrolyzed Processing equipment:
Described Electrolyzed Processing equipment comprises: main shaft, workbench, work box, feed system, control system, dc source and fast short-circuit protective device;
7) set up electrolyte system:
Described electrolyte system comprises: electrolyte, pump, sedimentation basin and filtering ponds;
8) process steel mold cavity
Workpiece is fixed on the workbench as anode; Electrolyte between dc source, workpiece anode and anode, negative electrode forms current channel; By the control systemic effect, when the gap between anode and the negative electrode reaches processing conditions, just formed pulse current, the dutycycle of control impuls electric current is carried out Electrolyzed Processing; Described feed system drives main shaft, and main shaft drives electrolysis cathode and pumps; Said electrolyte, is driven through filter by pump and to filter again in filtering ponds through sedimentation basin deposition, flow between electrolysis cathode and the workpiece anode to constitute the workspace, in the workspace, the workpiece anode is processed, and obtains required steel mold cavity; Main shaft, electrolysis cathode, workpiece anode and electrolyte are enclosed in the work box.
2. the processing method of steel mold cavity according to claim 1, it is characterized in that: described light-curing rapid forming equipment is selected for use: lasing light emitter is the solid state laser of 230～355nm wavelength.
3. the processing method of steel mold cavity according to claim 1 and 2 is characterized in that: described light-curing rapid forming equipment adopts following control parameter:
Fill sweep speed: Vs
1=5000mm/s;
Profile scan speed: Vs
2=3000mm/s;
Sweep span: Gs=0.1mm;
Bed thickness: Lh=0.1mm;
Spot diameter: D
1=0.2mm.
4. the processing method of steel mold cavity according to claim 1, it is characterized in that: described graphics software is selected any in CAD, CAM, Pro/ENGINEER or the SolidWorks software for use.
5. the processing method of steel mold cavity according to claim 1 is characterized in that: described hierarchy slicing is handled and is selected Rpdata software for use.
6. the processing method of steel mold cavity according to claim 1 is characterized in that: at least a in chemical silver spray or the Tu Yiyin lacquer selected in described conduction processing for use.
7. the processing method of steel mold cavity according to claim 1, it is characterized in that: described electroforming solution is selected CuSO for use
45H
2O, H
2SO
4Compound electroforming solution with solid particle.
8. the processing method of steel mold cavity according to claim 7 is characterized in that: described CuSO
45H
2The concentration of O is 70～250g/l, H
2SO
4Concentration be 50～200g/l.
9. the processing method of steel mold cavity according to claim 1, it is characterized in that: described mould release is selected potassium bichromate for use.
10. the processing method of steel mold cavity according to claim 1, it is characterized in that: described dc source is selected the high-power integrated package IGBT pulse power of being furnished with the short-circuit rapid cut-off device for use.
11. the processing method of steel mold cavity according to claim 1 is characterized in that: described electrolyte is selected NaNo for use
3With Na
2SO
4, Na
2CO
3Or NaClO
3Mixed solution.
12. the processing method of steel mold cavity according to claim 1 is characterized in that: its dutycycle of described pulse current is 1: 3～5.
13. the processing method of steel mold cavity according to claim 1 is characterized in that: described electrolyte flow mode is: at least a in forward flow, reverse flow or the lateral flow.
14. the processing method of steel mold cavity according to claim 1 is characterized in that: the material selection of described workbench: at least a in granite, marble, anti-corrosion cement or the epoxy resin.
15. the processing method of steel mold cavity according to claim 11 is characterized in that: described NaNo
3Concentration is 10～17%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910184508A CN101767230B (en) | 2009-08-28 | 2009-08-28 | Machining method of steel mould cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910184508A CN101767230B (en) | 2009-08-28 | 2009-08-28 | Machining method of steel mould cavity |
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|---|---|
| CN101767230A CN101767230A (en) | 2010-07-07 |
| CN101767230B true CN101767230B (en) | 2012-10-10 |
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|---|---|---|---|
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221826B (en) * | 2011-04-19 | 2012-08-22 | 西安煤矿机械有限公司 | Spare part profile processing method |
| CN102230198B (en) * | 2011-07-01 | 2013-04-17 | 广州市白云信达反光材料有限公司 | Secondary electroforming process of closed annular die strip and product formed by process |
| CN102699455A (en) * | 2012-05-23 | 2012-10-03 | 太仓凯鑫电子有限公司 | Device for processing metallic workpiece |
| CN105921833A (en) * | 2016-06-01 | 2016-09-07 | 李庆 | Electrolyte for removing alloy mold cores and method for removing alloy mold cores |
| CN107557821B (en) * | 2017-08-31 | 2023-10-27 | 南通大学 | Preparation method and device of hollow three-dimensional metal microstructure |
| CN109358441A (en) * | 2018-11-30 | 2019-02-19 | 武汉华星光电技术有限公司 | Method for producing panel |
| CN111575748A (en) * | 2020-05-07 | 2020-08-25 | 岭南师范学院 | Electroforming method based on 3D printing rapid molding |
-
2009
- 2009-08-28 CN CN200910184508A patent/CN101767230B/en not_active Expired - Fee Related
Non-Patent Citations (3)
| Title |
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| 王婉等.电火花加工复杂电极的快速制造.《制造技术与机床》.2005,(第7期),79-80. * |
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|---|---|
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