CN103658529A - Preparation method of model for V-process modeling - Google Patents
Preparation method of model for V-process modeling Download PDFInfo
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- CN103658529A CN103658529A CN201310746930.7A CN201310746930A CN103658529A CN 103658529 A CN103658529 A CN 103658529A CN 201310746930 A CN201310746930 A CN 201310746930A CN 103658529 A CN103658529 A CN 103658529A
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Abstract
The invention provides a preparation method of a model for V-process modeling. The preparation method of the model for V-process modeling comprises the steps of preparing gypsum slurry according to preset proportions; using the prepared gypsum slurry to obtain the model for V-process modeling. By adopting the technical scheme provided by the invention, the resources can be saved and the preparation process can be simplified.
Description
Technical field
The present invention relates to model manufacturing field, the preparation method of the apperance of using in particular to the moulding of a kind of V method.
Background technology
The V method moulding that 20 century 70s rise, utilizes plastic sheeting to vacuumize and makes dry sand moulding.Owing to not using binding agent in forming process, knockout is easy, makes the consumption of Modeling Material drop to bottom line, has reduced antiquated sand, has improved surface quality of continuous castings and precision, has reduced the production power consumption of foundry goods, is a kind of casting technique having a extensive future.But V method moulding apperance used is wooden model mostly, not only consumed a large amount of non-renewable timber resources, and the moulding cycle is long, technology difficulty is large.
Summary of the invention
The present invention aims to provide the preparation method of the apperance that the moulding of a kind of V method uses, and can economize on resources and simplify preparation technology.
To achieve these goals, according to an aspect of the present invention, provide the preparation method of a kind of V method apperance that moulding is used, comprised the following steps: according to preset blending ratio, prepare gypsum slurry; And utilize the gypsum slurry preparing to obtain the apperance that the moulding of V method is used.
Further, the constituent of described gypsum slurry comprises land plaster, additive and solvent.
Further, described land plaster comprises at least one in desulfurized gesso of flue gas, ardealite and the plaster of paris.
Further, the constituent of described additive comprises water reducer, defoamer and gel time controlling agent.
Further, described solvent is water or silica aqueous solution.
Further, the gypsum slurry that described utilization prepares obtains the apperance that the moulding of V method uses and comprises the following steps: the described gypsum slurry preparing is poured in die cavity; Dry described gypsum slurry and obtain plaster mold blank; And described plaster mold blank is processed into the apperance that the moulding of V method is used.
Further, in described die cavity, be embedded with metal needle, it is before further comprising the steps of that the described gypsum slurry of described oven dry obtains plaster mold blank: when described gypsum slurry initial set, described metal needle is extracted.
Further, describedly described plaster mold blank is processed into the apperance that the moulding of V method uses comprises the following steps: according to the three-dimensional CAD model numerical control machining code generating of described apperance; Described plaster mold blank is placed on process equipment, according to described numerical control machining code, described plaster mold blank is carried out to machining and obtain plaster mold; And the described plaster mold surface machining is cleaned, obtain the apperance that the moulding of described V method is used.
Further, the parameter of machining comprises: the speed of mainshaft is 2000 to 20000 revs/min; Cutting speed is for being less than or equal to 200 mm/second; Cutting depth is for being less than or equal to 10 millimeters; And cutting width is 30% to 80% of process tool diameter.
Further, drying gypsum slurry obtains plaster mold blank and comprises the following steps: described gypsum slurry is naturally dried in the shade in air 20 to 30 hours; And the described gypsum slurry after drying in the shade is put into air dry oven dry to constant weight and obtain described plaster mold blank, wherein bake out temperature is less than or equal to 60 ℃.
Apply technical scheme of the present invention, adopt gypsum slurry to replace timber to prepare the apperance that the moulding of V method is used, can save timber resources, reduce costs, and the plaster mold that adopts gypsum slurry to make is more easily processed compared to wooden model, simplified technique, reduced the production cycle, the surface accuracy of plaster mold also has by a relatively large margin and promotes compared to wooden model.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows preparation method's schematic flow sheet according to an embodiment of the invention; And
Fig. 2 shows the schematic flow sheet of preparation method's most preferred embodiment according to an embodiment of the invention.
The specific embodiment
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
As shown in Figure 1, according to embodiments of the invention, provide the preparation method of a kind of V method apperance that moulding is used, comprised the following steps:
S100, according to preset blending ratio, prepare gypsum slurry; And
The gypsum slurry that S200, utilization prepare obtains the apperance that the moulding of V method is used.
The present invention utilizes gypsum to substitute as raw material the apperance that timber or the moulding of preparation of metals V method are used, and has avoided the waste to timber resources, and the making of plaster mold and processing more simple and convenient compared to wooden model or metal pattern.
In conjunction with referring to Fig. 2, wherein S200, utilize the gypsum slurry preparing to obtain the apperance that the moulding of V method uses specifically to comprise the following steps:
First after the gypsum slurry preparing being stirred, slowly pour in the die cavity of mould, be embedded with metal needle in die cavity, metal needle diameter is not more than 2 millimeters, and spacing is not more than 50 millimeters;
Then when gypsum slurry initial set, rapidly metal needle is extracted, on gypsum slurry, formed passage;
Then gypsum slurry is dried in the shade in air 20 to 30 hours, put in air dry oven and to dry to constant weight being less than or equal under the condition of 60 ℃, obtain plaster mold blank;
According to the three-dimensional CAD model of default gypsum apperance, carry out somatotype processing, utilize CAM Software Create numerical control machining code;
Again plaster mold blank is placed on process equipment, according to this numerical control machining code, plaster mold blank is carried out to machining, obtain plaster mold;
Finally the plaster mold surface and the passage that machine are cleaned, obtain the apperance that the moulding of V method is used.
Preferably, the constituent of gypsum slurry comprises land plaster, additive and solvent, wherein land plaster comprises at least one in desulfurized gesso of flue gas, ardealite or the plaster of paris, the constituent of additive comprises water reducer, defoamer and gel time controlling agent, solvent is water or silica aqueous solution, silica aqueous solution used is commercially available frequent species, water in silica aqueous solution: Ludox=(3-4): 1.The ratio of land plaster and solvent (for example water) is measured with reference to national standard.
At present, in the accessory substance ardealite solid waste producing in the desulfurated plaster that large thermal power plant produces in power generation process and phosphorus compound fertilizer production process, a part is for plaster of Paris, remaining part is all abandoned, cause the waste of environmental pollution and resource, so the gypsum raw material that the present embodiment is intended to this part to be wasted use, and economize on resources.
Because gypsum apperance is wanted Reusability, so have relatively high expectations for the intensity of gypsum apperance, wearability etc., in order to realize this purpose, add water reducer can reduce the thick water consumption of gypsum mark; Gel time controlling agent can be set retarder or short aggegation, for controlling the presetting period of gypsum slurry, facilitates extracting in time of preburied pin.
Preferably, the Cutting Parameters of process equipment comprises: the speed of mainshaft is 2000 to 20000 revs/min; Cutting speed is for being less than or equal to 200 mm/second; Cutting depth is for being less than or equal to 10 millimeters; And cutting width is 30% to 80% of process tool diameter.
Preferably, process tool is selected from a kind of in ceramic milling cutter, diamond milling cutter, empiecement diamond milling cutter, surface diamond coating milling cutter, overlay coating carbide-tipped milling cutter or cubic boron nitride milling cutter.
Below in conjunction with preferred embodiment, this programme is elaborated.
Embodiment 1
The preparation method of the apperance that the moulding of V method is used comprises the following steps:
Step 1, the defoamer of the set retarder of the water reducer of the water of the desulfurized gesso of flue gas of 100 weight portions, 51 weight portions, 0.3 weight portion, 0.01 weight portion and 0.3 weight portion is carried out to proportioning obtain gypsum slurry, water reducer used is the sulfonated melamine condensation polymer of MELMENT F15G melamine type that German BASF BASF AG produces, set retarder is citric acid, and defoamer is the AGITAN P8850 type powder defoamer that German MUNZING-GHEMIE company produces.
Step 2, after being stirred, pours in the mold cavity that is embedded with metal needle the gypsum slurry preparing 0.5 millimeter of the diameter of metal needle, 10 millimeters of spacing into.
Step 3, when gypsum slurry initial set, extract rapidly metal needle, form passage, after naturally drying in the shade 24 hours, put in air dry oven and dry to constant weight in air, bake out temperature is 60 ℃, obtains plaster mold blank.
Step 4, the three-dimensional CAD model of default gypsum apperance is carried out to somatotype processing, utilize CAM Software Create numerical control machining code.
Step 5, the plaster mold blank that step 4 is obtained are placed on process equipment, according to numerical control machining code, plaster mold blank is carried out to machining, obtain plaster mold, process tool used is the staight shank twolip polycrystalline diamond slotting cutter of M16, rough machined cutting depth is 1 millimeter, cutting width is 8 millimeters, accurately machined cutting depth is 0.2 millimeter, cutting width is 1 millimeter, the speed of mainshaft is 7020 revs/min, rough machined cutting speed is 60 mm/second, and accurately machined cutting speed is 50 mm/second.
Plaster mold surface and passage that step 6, cleaning obtain, obtain the apperance that the moulding of V method is used.
Embodiment 2
The preparation method of the apperance that the moulding of V method is used comprises the following steps:
Step 1, the defoamer of the set retarder of the water reducer of the silica aqueous solution of the ardealite of 100 weight portions, 53 weight portions, 0.3 weight portion, 0.01 weight portion and 0.3 weight portion is carried out to proportioning obtain gypsum slurry, water reducer used is the sulfonated melamine condensation polymer of MELMENT F15G melamine type that German BASF BASF AG produces, set retarder is citric acid, and defoamer is the AGITAN P8850 type powder defoamer that German MUNZING-GHEMIE company produces.
Step 2, after being stirred, pours in the mold cavity that is embedded with metal needle the gypsum slurry preparing 1 millimeter of the diameter of metal needle, 15 millimeters of spacing into.
Step 3, when gypsum slurry initial set, extract rapidly metal needle, form passage, after naturally drying in the shade 20 hours, put in air dry oven and dry to constant weight in air, bake out temperature is 50 ℃, obtains plaster mold blank.
Step 4, the three-dimensional CAD model of default gypsum apperance is carried out to somatotype processing, utilize CAM Software Create numerical control machining code.
Step 5, the plaster mold blank that step 4 is obtained are placed on process equipment, according to numerical control machining code, plaster mold blank is carried out to machining, obtain plaster mold, process tool used is the staight shank twolip polycrystalline diamond slotting cutter of M16, rough machined cutting depth is 1 millimeter, cutting width is 8 millimeters, accurately machined cutting depth is 0.2 millimeter, cutting width is 1 millimeter, the speed of mainshaft is 7020 revs/min, rough machined cutting speed is 60 mm/second, and accurately machined cutting speed is 50 mm/second.
Plaster mold surface and passage that step 6, cleaning obtain, obtain the apperance that the moulding of V method is used.
Embodiment 3
The preparation method of the apperance that the moulding of V method is used comprises the following steps:
Step 1, the defoamer of the set retarder of the water reducer of the water of the plaster of paris of 100 weight portions, 40 weight portions, 0.3 weight portion, 0.01 weight portion and 0.3 weight portion is carried out to proportioning obtain gypsum slurry, water reducer used is the sulfonated melamine condensation polymer of MELMENT F15G melamine type that German BASF BASF AG produces, set retarder is citric acid, and defoamer is the AGITAN P8850 type powder defoamer that German MUNZING-GHEMIE company produces.
Step 2, after being stirred, pours in the mold cavity that is embedded with metal needle the gypsum slurry preparing 0.5 millimeter of the diameter of metal needle, 10 millimeters of spacing into.
Step 3, when gypsum slurry initial set, extract rapidly metal needle, form passage, after naturally drying in the shade 24 hours, put in air dry oven and dry to constant weight in air, bake out temperature is 60 ℃, obtains plaster mold blank.
Step 4, the three-dimensional CAD model of default gypsum apperance is carried out to somatotype processing, utilize CAM Software Create numerical control machining code.
Step 5, the plaster mold blank that step 4 is obtained are placed on process equipment, according to numerical control machining code, plaster mold blank is carried out to machining, obtain plaster mold, process tool used is the staight shank twolip polycrystalline diamond slotting cutter of M16, rough machined cutting depth is 1 millimeter, cutting width is 8 millimeters, accurately machined cutting depth is 0.2 millimeter, cutting width is 1 millimeter, the speed of mainshaft is 7020 revs/min, rough machined cutting speed is 60 mm/second, and accurately machined cutting speed is 50 mm/second.
Plaster mold surface and passage that step 6, cleaning obtain, obtain the apperance that the moulding of V method is used.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
1, adopt gypsum to replace timber as the raw material of apperance, will save a large amount of timber resources, avoid waste and welding.
2, adopt pre-buried metal needle to make passage, by saving the operation of processing passage in the apperance of moulding, make work simplification, time saving and energy saving.
3, adopt the method for numerical control cutting to make apperance; avoided the making of metal pattern or wooden model; and do not need to turn over silicon rubber mould processed; directly plaster mold blank is carried out to digitlization processing and manufacturing and become gypsum apperance; shortened casting flow process; cut down the impact of human factor, saved founding materials, can produce fast the gypsum apperance that dimensional accuracy is high, surface smoothness is good.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a preparation method for the apperance that the moulding of V method is used, is characterized in that, comprises the following steps:
According to preset blending ratio, prepare gypsum slurry; And
The gypsum slurry that utilization prepares obtains the apperance that the moulding of V method is used.
2. the preparation method of the apperance that V method according to claim 1 moulding is used, is characterized in that, the constituent of described gypsum slurry comprises land plaster, additive and solvent.
3. the preparation method of the apperance that V method according to claim 2 moulding is used, is characterized in that, described land plaster comprises at least one in desulfurized gesso of flue gas, ardealite and the plaster of paris.
4. the preparation method of the apperance that V method according to claim 2 moulding is used, is characterized in that, the constituent of described additive comprises water reducer, defoamer and gel time controlling agent.
5. the preparation method of the apperance that V method according to claim 2 moulding is used, is characterized in that, described solvent is water or silica aqueous solution.
6. the preparation method of the apperance that V method according to claim 1 moulding is used, is characterized in that, the gypsum slurry that described utilization prepares obtains the apperance that the moulding of V method uses and comprises the following steps:
The described gypsum slurry preparing is poured in die cavity;
Dry described gypsum slurry and obtain plaster mold blank; And
Described plaster mold blank is processed into the apperance that the moulding of V method is used.
7. the preparation method of the apperance that V method according to claim 6 moulding is used, is characterized in that, in described die cavity, is embedded with metal needle, and it is before further comprising the steps of that the described gypsum slurry of described oven dry obtains plaster mold blank:
When described gypsum slurry initial set, described metal needle is extracted.
8. the preparation method of the apperance that V method according to claim 6 moulding is used, is characterized in that, describedly described plaster mold blank is processed into the apperance that the moulding of V method uses comprises the following steps:
According to the three-dimensional CAD model numerical control machining code generating of described apperance;
Described plaster mold blank is placed on process equipment, according to described numerical control machining code, described plaster mold blank is carried out to machining and obtain plaster mold; And
The described plaster mold surface machining is cleaned, obtained the apperance that the moulding of described V method is used.
9. the preparation method of the apperance that V method according to claim 8 moulding is used, is characterized in that, the parameter of machining comprises:
The speed of mainshaft is 2000 to 20000 revs/min;
Cutting speed is for being less than or equal to 200 mm/second;
Cutting depth is for being less than or equal to 10 millimeters; And
Cutting width is 30% to 80% of process tool diameter.
10. the preparation method of the apperance that V method according to claim 6 moulding is used, is characterized in that, oven dry gypsum slurry obtains plaster mold blank and comprises the following steps:
Described gypsum slurry is naturally dried in the shade in air 20 to 30 hours; And
Described gypsum slurry after drying in the shade is put into air dry oven and dry to constant weight and obtain described plaster mold blank, wherein bake out temperature is less than or equal to 60 ℃.
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| CN104368753A (en) * | 2014-11-07 | 2015-02-25 | 滁州金诺实业有限公司 | Rapid V-process mold manufacturing method based on paraffin characteristics |
| CN104525850A (en) * | 2014-12-16 | 2015-04-22 | 中国南方航空工业(集团)有限公司 | Cast pattern and preparation method of cast pattern |
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Cited By (3)
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| CN104368753A (en) * | 2014-11-07 | 2015-02-25 | 滁州金诺实业有限公司 | Rapid V-process mold manufacturing method based on paraffin characteristics |
| CN104368753B (en) * | 2014-11-07 | 2016-07-06 | 滁州金诺实业有限公司 | V method mould rapid die-manufacturing method based on paraffin characteristic |
| CN104525850A (en) * | 2014-12-16 | 2015-04-22 | 中国南方航空工业(集团)有限公司 | Cast pattern and preparation method of cast pattern |
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| CN103658529B (en) | 2015-12-30 |
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