CN101439390A - Digitalization processing method of gypsum mould - Google Patents
Digitalization processing method of gypsum mould Download PDFInfo
- Publication number
- CN101439390A CN101439390A CNA2008102467535A CN200810246753A CN101439390A CN 101439390 A CN101439390 A CN 101439390A CN A2008102467535 A CNA2008102467535 A CN A2008102467535A CN 200810246753 A CN200810246753 A CN 200810246753A CN 101439390 A CN101439390 A CN 101439390A
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- Prior art keywords
- gypsum
- processing
- processing method
- plaster
- milling cutter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 40
- 239000010440 gypsum Substances 0.000 title claims abstract description 40
- 238000003672 processing method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 40
- 238000003801 milling Methods 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 239000000428 dust Substances 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 24
- 239000011505 plaster Substances 0.000 claims description 22
- 238000003754 machining Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 238000005495 investment casting Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 3
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000011507 gypsum plaster Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 239000000203 mixture Substances 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 238000010111 plaster casting Methods 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
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- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a method for digital processing a gypsum mold, belonging to the crossed technical field of precision casing and digital control processing. The method comprises the steps as follows: a gypsum mixture is made into a block to be dried and calcined into a gypsum block to be processed firstly; a three-dimensional CAD model of the gypsum mold is transformed into digital control processing code directly; the gypsum block is arranged on a processing device and milling processing is carried out under the drive of the digital control processing code; waste residue produced during processing is taken away by blew-out air current or is absorbed by a dust collector; and finally, the well processed gypsum mold is cast to obtain a cast. Compared with the existing gypsum patternmaking method, the processing method has high processing precision, saves the step for manufacturing a mold, reduces the processing procedures, shortens the production period and reduces the production cost. The method is especially suitable for processing and manufacturing a single piece or a small batch of precise cast.
Description
Technical field
The invention belongs to the interleaving techniques field of hot investment casting and digital control processing, be specifically related to a kind of digitalization processing method of gypsum mould.
Background technology
Continuous aggravation along with market globalization and competition, the speed of model change is constantly accelerated, the demand of single-piece, small lot, high-accuracy foundry goods is more and more, and single-piece, small lot especially the plaster mold manufacture process requirement of large-scale precision foundry goods are with short production cycle, low cost of manufacture.Adopt the method manufacturing plaster mold production cycle of the traditional system of turning over silica gel mould long at present, the manufacturing cost height can not be met the need of market.In addition, large thermal power plant has produced a large amount of desulfurized gesso of flue gas solid waste in power generation process, and a part is used for plaster of Paris at present, and all the other are temporarily abandoned, and also is badly in need of employing new technology being used.
Plaster casting is a kind of of conventional cast method; having can casting surface precision height, complex-shaped non-ferrous casting; advantages such as the easy cleaning in cast back; be usually used in the mould manufacturing of non-ferrous metal; the method major defect that mould acquisition gypsum mould is turned in employing is a complex technical process, needs the system master mold, turns over system silica gel mould, pouring gypsum mould; obtain behind the gypsum mould casting metal foundry goods again, and in turning over mold process, have loss of significance.
Summary of the invention
The objective of the invention is defective, provide that a kind of technical process is simple, with short production cycle, cost is low, the digitalization processing method of the gypsum mould that machining accuracy is high at above-mentioned prior art.
The technical scheme taked of the present invention is to achieve these goals: a kind of digitalization processing method of gypsum mould, this method comprises the steps:
A) require to carry out the gypsum material proportioning according to precision casting process;
B) gypsum material clamp dog, oven dry, the roasting for preparing formed plaster block to be processed;
C) directly generate numerical control machining code according to the plaster mold three-dimensional CAD model in conjunction with machined parameters;
D) plaster block that makes is placed on the process equipment and under the driving of numerical control machining code, to use process tool to process;
E) air-flow that is blown of the waste residue that produces of processing is taken away or is sucked in the gathering-device by dust exhaust apparatus;
F) plaster cast that processes is poured into a mould;
G) the foundry goods polishing cleaning that pours is obtained precision casting.
When described plaster cast is large-scale, the method for taking piecemeal processing recombinant to obtain.
Described gypsum material is the plaster of paris or desulfurized gesso of flue gas.
Described machined parameters comprises the speed of mainshaft, cutting speed and cutting-in, and the described speed of mainshaft is at 2000-20000 rev/min, and cutting speed is in 200mm/s, and cutting-in is in 10mm.
Described waste residue is placed near the air-flow that nozzle blows out the cutter head and takes away or collect in the antiquated sand gathering-device by the negative pressure dust suction.
Described process tool is ceramic milling cutter, diamond milling cutter, empiecement diamond milling cutter, surface diamond coating milling cutter or overlay coating carbide-tipped milling cutter.
The present invention be a kind of efficiently, die-manufacturing method fast, accurately, compare with existing plaster mold casting mold classical production process and to have the following advantages:
1. shortened process is compared with traditional handicraft, and this method has saved master mold manufacturing link and silica gel turns over the modular ring joint.
2. the machining accuracy height is compared with traditional handicraft, does not exist to turn over the loss of significance that is molded as, and adopts numerical control (NC) Machining Accuracy higher.
3. with short production cycle, cost is low, compares with traditional handicraft, has saved the process of system silica gel mould, and manufacturing cost reduces greatly, and can adopt desulfurated plaster further to reduce cost.
Description of drawings
Fig. 1 is the flow process chart of processing method of the present invention.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Referring to Fig. 1, a kind of digitalization processing method of gypsum mould, this method comprises the steps:
Step 101: proportioning gypsum mixture;
The dimensional accuracy of hot investment casting is generally in ± 0.2mm, because gypsum is constantly dehydration in oven dry and roasting process, undergo phase transition, and be accompanied by the variation of volume, so, in gypsum powder, must add suitable filler in order to prevent the gypsum mould cracking, with linear shrinkage and the crackle tendency that reduces gypsum mould, improve the capacity of heat transmission of gypsum mould, make it have good room temperature and elevated temperature strength, dimensional accuracy preferably.Gypsum is chosen desulfurized gesso of flue gas, and filler comprises mullite powder and zirconium English powder.In order to improve the intensity of gypsum mould, add a certain amount of glass fibre again, select the roving glass fibre for use, length is about 10～20mm.Selecting water temperature during batch mixing for use is running water about 25 ℃.The gypsum mixture proportioning is: 300 order zirconium English powder additions, 15～25%, 270 order mullite powder additions 45～55%, and the addition of glass fibre is 0.1%～0.3%, and water-solid ratio is between 50～60, and all the other are gypsum.
Step 102: the gypsum material clamp dog, oven dry, the roasting that prepare are formed plaster block to be processed;
With the gypsum material clamp dog for preparing, baking temperature is incubated 5-14 hour more than 100 ℃, obtains plaster block to be processed.
Step 103: directly generate numerical control machining code by three-dimensional CAD model;
Directly generate numerical control machining code according to the plaster mold three-dimensional CAD model in conjunction with machined parameters, machined parameters refers to the speed of mainshaft, cutting speed and cutting-in, and the speed of mainshaft is at 10000 rev/mins, and cutting speed is at 200mm/s, and cutting-in is at 10mm.
Step 104: carry out plaster block processing under the driving of numerical control machining code;
The plaster block that makes is placed on the process equipment, under the driving of numerical control machining code, plaster block is processed with ceramic milling cutter;
Step 105: employing blows afloat or the mode of dust suction is drained waste residue;
Process can produce waste residue, near the processing cutter head nozzle that can blow is set, and waste residue is taken away by the air-flow that nozzle blows out, and the nozzle air current flow is 3L/min.
Step 106: obtain pouring into a mould behind the plaster cast;
The plaster cast that processes is poured into a mould.
Step 107: obtain foundry goods after the polishing cleaning;
The foundry goods polishing cleaning that pours is obtained precision casting.
Above method can take piecemeal processing recombinant to obtain for large-scale plaster cast.
Above-described embodiment, the present invention specific embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacing all should be included in protection scope of the present invention.
Claims (6)
1. the digitalization processing method of a gypsum mould is characterized in that, this method comprises the steps:
A) require to carry out the gypsum material proportioning according to precision casting process;
B) gypsum material clamp dog, oven dry, the roasting for preparing formed plaster block to be processed;
C) directly generate numerical control machining code according to the plaster mold three-dimensional CAD model in conjunction with machined parameters;
D) plaster block that makes is placed on the process equipment and under the driving of numerical control machining code, to use process tool to process;
E) air-flow that is blown of the waste residue that produces of processing is taken away or is sucked in the gathering-device by dust exhaust apparatus;
F) plaster cast that processes is poured into a mould;
G) the foundry goods polishing cleaning that pours is obtained precision casting.
2. the digitalization processing method of gypsum mould according to claim 1 is characterized in that, when described plaster cast is large-scale, and the method for taking piecemeal processing recombinant to obtain.
3. the digitalization processing method of gypsum mould according to claim 1 and 2 is characterized in that, described gypsum material is the plaster of paris or desulfurized gesso of flue gas.
4. the digitalization processing method of gypsum mould according to claim 1 and 2, it is characterized in that described machined parameters comprises the speed of mainshaft, cutting speed and cutting-in, the described speed of mainshaft is at 2000-20000 rev/min, cutting speed is in 200mm/s, and cutting-in is in 10mm.
5. the digitalization processing method of gypsum mould according to claim 1 and 2 is characterized in that, described waste residue is placed near the air-flow that nozzle blows out the cutter head and takes away or collect in the antiquated sand gathering-device by the negative pressure dust suction.
6. the digitalization processing method of gypsum mould according to claim 1 and 2 is characterized in that, described process tool is ceramic milling cutter, diamond milling cutter, empiecement diamond milling cutter, surface diamond coating milling cutter or overlay coating carbide-tipped milling cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810246753 CN101439390B (en) | 2008-12-30 | 2008-12-30 | Digitalization processing method of gypsum mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810246753 CN101439390B (en) | 2008-12-30 | 2008-12-30 | Digitalization processing method of gypsum mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101439390A true CN101439390A (en) | 2009-05-27 |
| CN101439390B CN101439390B (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810246753 Expired - Fee Related CN101439390B (en) | 2008-12-30 | 2008-12-30 | Digitalization processing method of gypsum mould |
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| Country | Link |
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| CN (1) | CN101439390B (en) |
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| CN102773411A (en) * | 2012-08-20 | 2012-11-14 | 机械科学研究总院先进制造技术研究中心 | Digital die-free sand mould extrusion forming method |
| CN101992272B (en) * | 2009-08-12 | 2013-01-09 | 机械科学研究总院先进制造技术研究中心 | Self-adaptive casting mould manufacture method for casting |
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Granted publication date: 20110316 |