CN101992266A - Manufacturing method for investment casting wax model - Google Patents
Manufacturing method for investment casting wax model Download PDFInfo
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- CN101992266A CN101992266A CN 201010577196 CN201010577196A CN101992266A CN 101992266 A CN101992266 A CN 101992266A CN 201010577196 CN201010577196 CN 201010577196 CN 201010577196 A CN201010577196 A CN 201010577196A CN 101992266 A CN101992266 A CN 101992266A
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Abstract
The invention relates to a manufacturing method for an investment casting wax model. The method is characterized by comprising the following steps: 1, manufacturing a resin model of a wax model by means of a rapid molding machine according to a three-dimensional computed-aided design (CAD) model; 2, manufacturing a resin model of the wax model used for electrosparking electrodes of a casting wax model; 3 duplicating the inner cavity structure of a wax model blank by utilizing the resin model, the size of which is the same as that of a casting, of the wax model and silicon rubber; 4, casting the wax model blank by the composite ceramic mould casting technology; 5, casting the electrosparking electrodes of the wax model by utilizing the resin model in which the wax model is amplified by 0.5-1.5mm and the composite ceramic mould casting technology; and 6, electrosparking the inner cavity of the wax model blank and assembling to obtain the wax model. The invention has the following advantages: 1, the design and modification of the casting appearance can be carried out conveniently; 2, the size accuracy of the blank is enhanced, and the processing cycle is shortened; and 3, the size accuracy of the electrodes is high, the manufacturing cycle of the electrodes and the machining cycle of the wax model are shortened, and the processing cost is lower.
Description
Technical field
The invention belongs to the Materials Processing Engineering technical field, be specifically related to a kind of precision-investment casting investment pattern die manufacture method.
Background technology
In the technical process of precision-investment casting, making high-quality fusible pattern is the basis that obtains high-quality precision-investment casting foundry goods, the fusible pattern that the precision-investment casting of present domestic batch process is used is all by the investment pattern die moulding, the quality of investment pattern die and to manufacture and design speed be the key technology equipment that enterprise wins harsh market competition.The manufacturing process of investment pattern die generally was that product drawing or the foundry goods material object that utilizes the client to provide carries out the mould structure design in the past, carried out blank making, machining and assembling then.When producing the investment pattern die blank, be mostly to adopt wood pattern molding, for the wooden model of complicated inner cavity shape, fabrication cycle is long, and difficulty is big, and the appearance and size precision of wooden model is low, causes the allowance of investment pattern die blank very big.Machining operation at investment pattern die, mould for complex-curved shape die cavity will adopt Computerized Numerical Control processing technology, need finish by numerical control programming and digital control processing, cause the machined difficulty of investment pattern die to strengthen, process-cycle prolongs, and the process equipment that is adopted is relatively more expensive, makes that thus the processing charges of investment pattern die is very high, and die manufacturing cost is very high.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can overcome above-mentioned defective, technology is simple, crudy good, the cycle is short, cost is low precision-investment casting investment pattern die manufacture method.
The present invention is achieved by the following technical solution:
Be a kind of precision-investment casting investment pattern die manufacture method, it is characterized in that: 1. make the three-dimensional CAD model of fusible pattern, and make the colophony prototype of the used fusible pattern of casting investment pattern die blank by rapidform machine according to the design size of the foundry goods that will cast; 2. make the colophony prototype of the used fusible pattern of casting investment pattern die electric discharging machining electrode; 3. utilization is turned over the inner-cavity structure of making the investment pattern die blank with the colophony prototype and the silicon rubber of the fusible pattern of foundry goods same size; 4. utilize the blank of composite ceramics shell foundry engieering casting investment pattern die; 5. utilize the size of fusible pattern is amplified the colophony prototype of 0.5～1.5mm and the electric discharging machining electrode of composite ceramics shell foundry engieering casting investment pattern die; 6. spark machined investment pattern die blank inner chamber, and its assembling obtained investment pattern die.
Described precision-investment casting investment pattern die manufacture method, the step 1. three-dimensional CAD model of middle fusible pattern obtains design size or utilizes the foundry goods design size that provides to carry out the three-dimensional CAD moulding of fusible pattern according to measure foundry goods with three coordinate measuring machine, the three-dimensional CAD moulding that obtains is generated the three-dimensional CAD model of making the used fusible pattern of investment pattern die blank, then three-dimensional CAD model is sent in the control computer of laser fast shaping machine, makes the used colophony prototype of casting investment pattern die blank by rapidform machine.
Described precision-investment casting investment pattern die manufacture method, the step 2. three-dimensional CAD model of middle fusible pattern obtains design size or utilizes the foundry goods design size that provides to carry out the three-dimensional CAD moulding according to measure foundry goods with three coordinate measuring machine, in modeling process, the design size that records is amplified 0.5～1.5mm, generate and make the used three-dimensional CAD model of investment pattern die electric discharging machining electrode, and send it in the control computer of laser fast shaping machine, make the used colophony prototype of casting electric discharging machining electrode by rapidform machine.
Described precision-investment casting investment pattern die manufacture method, the 3. middle utilization of step is apperance with the colophony prototype of the fusible pattern of foundry goods same size, utilize fluid silicone rubber that the colophony prototype apperance is contained, after treating that silicon rubber solidifies, take out the colophony prototype apperance, can obtain the silicon rubber inner-cavity structure of investment pattern die blank by this method of turning over mould.
Described precision-investment casting investment pattern die manufacture method, step is utilized the inner-cavity structure of the silicon rubber of the foaming mould blank that step obtains in 3. in 4., at first selecting 300 orders～400 purpose zircon sands for use on the surface of inner chamber is surface layer mould shell, selecting 100 orders～200 purpose bauxite synthesis materials again for use is the backing layer shell, treat after the shell drying, shell is carried out roasting under 950 ℃ of conditions, the inner-cavity structure of silicon rubber can be burnt, the shell insulation was come out of the stove at 250 ℃ after 1 hour, then obtain casting the composite ceramics shell of investment pattern die blank, casting metals liquid in shell, treat that molten metal solidifies after, remove the composite ceramics shell, can obtain the blank of investment pattern die.
Described precision-investment casting investment pattern die manufacture method, the colophony prototype surface that the 5. middle utilization of step is amplified 0.5～1.5mm with the design size of foundry goods at first selects for use zircon sand to be surface layer mould shell, aluminium alumina synthesis material is the backing layer shell again, treat after the shell drying, shell is carried out roasting under 950 ℃ of conditions, colophony prototype can be burnt, the shell insulation was come out of the stove at 250 ℃ after 1 hour, then obtain casting the composite ceramics shell of electric discharging machining electrode, casting red copper molten metal in shell, after treating that molten metal solidifies, remove the blank that the composite ceramics shell can obtain electric discharging machining electrode, after the surface finish processing with electrode blank, can obtain the electrode of investment pattern die spark machined.
Described precision-investment casting investment pattern die manufacture method, step 6. in, at first the faying face of investment pattern die blank is processed, realize the accurate location of blank Working position, then blank is placed on the platform of electric spark machine tool, realize accurately location with electric discharging machining electrode, treat that spark machined can finish the edm process of investment pattern die after the design size of amplifying 0.5～1.5mm than foundry goods design size, can obtain the precision-investment casting investment pattern die after the investment pattern die that will the process assembling.
The present invention compared with prior art has following advantage:
1, adopts rapid shaping technique to prepare the resin material object of foundry goods fusible pattern, made things convenient for design and modification the foundry goods profile;
2, directly utilize the shell that mould and composite ceramics shell foundry engieering form the investment pattern die inner chamber that turns over of the colophony prototype of fusible pattern of rapid shaping preparation and silicon rubber mould, make the allowance of investment pattern die blank inner chamber reach the millimeter level, the dimensional accuracy that has increased blank has shortened the process-cycle;
3, directly utilize the colophony prototype and the ceramic shell foundry engieering of the fusible pattern of rapid shaping preparation to cast the electrode of investment pattern die spark machined, make the dimensional accuracy of electrode reach a few tenths of a mm level, can satisfy the processing request of investment pattern die, shortened the manufacturing cycle of electrode and the machined cycle of investment pattern die, processing charges is lower;
4, this technology is particularly suitable for the manufacturing of the investment pattern die of complicated shape inner chamber, shape is complicated more, the characteristics of the prototype of any complicated shape of rapid shaping technique manufacturing embody just obviously more, because electrical discharge machining process mainly is that the manufacturing of electrode is relatively more difficult, so cavity shape is complicated more, the technical advantage of this technology embodies obviously more, and economic and social benefit embodies also significantly more.
The specific embodiment
Below be the concrete operations step of making the precision-investment casting investment pattern die:
1, makes the used colophony prototype of casting investment pattern die blank: the molded dimension of foundry goods (belt pulley) being measured fusible pattern CAD on ARES10-7-5 type three coordinate measuring machine, utilize Pro/E software to carry out the three-dimensional CAD moulding according to the molded dimension that records, the three-dimensional CAD moulding that obtains is generated the three-dimensional CAD model of making the used fusible pattern of investment pattern die blank, then three-dimensional CAD model is sent in the control computer of laser fast shaping machine, makes the used colophony prototype of casting investment pattern die blank by rapidform machine.
2, make casting investment pattern die electric discharging machining electrode used colophony prototype: utilize Pro/E software to carry out the three-dimensional CAD moulding molded dimension of the fusible pattern that records, in modeling process, the molded dimension that records is amplified 1mm, surplus as cooling contraction in the later castings production process, the three-dimensional CAD moulding that obtains is generated the used three-dimensional CAD model of making investment pattern die blank, then three-dimensional CAD model is sent in the control computer of laser fast shaping machine, makes the used colophony prototype of casting investment pattern die blank by rapidform machine.
3, the colophony prototype of the fusible pattern of utilization and foundry goods same size and silicon rubber turn over the inner-cavity structure of system investment pattern die blank: utilization is apperance with the colophony prototype of the fusible pattern of foundry goods same size, utilize fluid silicone rubber that the colophony prototype apperance is contained, after treating that silicon rubber solidifies, take out the colophony prototype apperance, can obtain the silicon rubber inner-cavity structure of investment pattern die blank by this method of turning over mould.
4, utilize the blank of composite ceramics shell foundry engieering casting investment pattern die: the silicon rubber inner-cavity structure that utilizes the investment pattern die blank that obtains, at first selecting 300 orders～400 purpose zircon sands for use on the surface of inner chamber is surface layer mould shell, selecting 100 orders～200 purpose bauxite synthesis materials again for use is the backing layer shell, treat after the shell drying, shell is carried out roasting under 950 ℃ of conditions, the inner-cavity structure of silicon rubber can be burnt, the shell insulation was come out of the stove at 250 ℃ after 1 hour, then obtain casting the composite ceramics shell of investment pattern die blank, casting metals liquid in shell, after treating that molten metal solidifies, remove the composite ceramics shell, can obtain the blank of investment pattern die.
5, utilize composite ceramics shell foundry engieering casting investment pattern die electric discharging machining electrode: the colophony prototype surface that utilization is amplified the fusible pattern of 1mm with the design size of foundry goods at first selects for use zircon sand to be surface layer mould shell, aluminium alumina synthesis material is the backing layer shell again, treat after the shell drying, shell is carried out roasting under 950 ℃ of conditions, colophony prototype can be burnt, the shell insulation was come out of the stove at 250 ℃ after 1 hour, then obtain casting the composite ceramics shell of investment pattern die electric discharging machining electrode, casting red copper molten metal in shell, after treating that molten metal solidifies, remove the blank that the composite ceramics shell can obtain electric discharging machining electrode, after the surface finish processing with electrode blank, can obtain the electrode of investment pattern die spark machined.
6, obtain investment pattern die through spark machined: at first the faying face of investment pattern die blank is processed, realize the accurate location of blank Working position, then blank is placed on the platform of electric spark machine tool, realize accurately location with electric discharging machining electrode, treat that spark machined can finish the edm process of investment pattern die after the dies cavity size of amplifying 1mm than foundry goods design size, can obtain the precision-investment casting investment pattern die after the investment pattern die that will the process assembling.
Claims (7)
1. a precision-investment casting investment pattern die manufacture method is characterized in that: 1. make the three-dimensional CAD model of fusible pattern according to the design size of the foundry goods that will cast, and made the colophony prototype of the used fusible pattern of casting investment pattern die blank by rapidform machine; 2. make the colophony prototype of the used fusible pattern of casting investment pattern die electric discharging machining electrode; 3. utilization is turned over the inner-cavity structure of making the investment pattern die blank with the colophony prototype and the silicon rubber of the fusible pattern of foundry goods same size; 4. utilize the blank of composite ceramics shell foundry engieering casting investment pattern die; 5. utilize the size of fusible pattern is amplified the colophony prototype of 0.5～1.5mm and the electric discharging machining electrode of composite ceramics shell foundry engieering casting investment pattern die; 6. spark machined investment pattern die blank inner chamber, and its assembling obtained investment pattern die.
2. precision-investment casting investment pattern die manufacture method as claimed in claim 1, it is characterized in that: the step 1. three-dimensional CAD model of middle fusible pattern obtains design size or utilizes the foundry goods design size that provides to carry out the three-dimensional CAD moulding of fusible pattern according to measure foundry goods with three coordinate measuring machine, the three-dimensional CAD moulding that obtains is generated the three-dimensional CAD model of making the used fusible pattern of investment pattern die blank, then three-dimensional CAD model is sent in the control computer of laser fast shaping machine, makes the used colophony prototype of casting investment pattern die blank by rapidform machine.
3. precision-investment casting investment pattern die manufacture method as claimed in claim 1, it is characterized in that: the step 2. three-dimensional CAD model of middle fusible pattern obtains design size according to measuring foundry goods with three coordinate measuring machine, perhaps utilize the foundry goods design size that provides to carry out the three-dimensional CAD moulding, in modeling process, the design size that records is amplified 0.5～1.5mm, generate and make the used three-dimensional CAD model of investment pattern die electric discharging machining electrode, and send it in the control computer of laser fast shaping machine, make the used colophony prototype of casting electric discharging machining electrode by rapidform machine.
4. precision-investment casting investment pattern die manufacture method as claimed in claim 1, it is characterized in that: the 3. middle utilization of step is apperance with the colophony prototype of the fusible pattern of foundry goods same size, utilize fluid silicone rubber that the colophony prototype apperance is contained, after treating that silicon rubber solidifies, take out the colophony prototype apperance, can obtain the silicon rubber inner-cavity structure of investment pattern die blank by this method of turning over mould.
5. precision-investment casting investment pattern die manufacture method as claimed in claim 1, it is characterized in that: step is utilized the inner-cavity structure of the silicon rubber of the foaming mould blank that step obtains in 3. in 4., at first selecting 300 orders～400 purpose zircon sands for use on the surface of inner chamber is surface layer mould shell, selecting 100 orders～200 purpose bauxite synthesis materials again for use is the backing layer shell, treat after the shell drying, shell is carried out roasting under 950 ℃ of conditions, the inner-cavity structure of silicon rubber can be burnt, the shell insulation was come out of the stove at 250 ℃ after 1 hour, then obtain casting the composite ceramics shell of investment pattern die blank, casting metals liquid in shell, after treating that molten metal solidifies, remove the composite ceramics shell, can obtain the blank of investment pattern die.
6. precision-investment casting investment pattern die manufacture method as claimed in claim 1, it is characterized in that: the colophony prototype surface that the 5. middle utilization of step is amplified 0.5～1.5mm with the design size of foundry goods at first selects for use zircon sand to be surface layer mould shell, aluminium alumina synthesis material is the backing layer shell again, treat after the shell drying, shell is carried out roasting under 950 ℃ of conditions, colophony prototype can be burnt, the shell insulation was come out of the stove at 250 ℃ after 1 hour, then obtain casting the composite ceramics shell of electric discharging machining electrode, casting red copper molten metal in shell, after treating that molten metal solidifies, remove the blank that the composite ceramics shell can obtain electric discharging machining electrode, after the surface finish processing with electrode blank, can obtain the electrode of investment pattern die spark machined.
7. precision-investment casting investment pattern die manufacture method as claimed in claim 1, it is characterized in that: step 6. in, at first the faying face of investment pattern die blank is processed, realize the accurate location of blank Working position, then blank is placed on the platform of electric spark machine tool, realize accurately location with electric discharging machining electrode, treat that spark machined can finish the edm process of investment pattern die after the design size of amplifying 0.5～1.5mm than foundry goods design size, can obtain the precision-investment casting investment pattern die after the investment pattern die that will the process assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010577196 CN101992266A (en) | 2010-12-07 | 2010-12-07 | Manufacturing method for investment casting wax model |
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| CN 201010577196 CN101992266A (en) | 2010-12-07 | 2010-12-07 | Manufacturing method for investment casting wax model |
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| CN101992266A true CN101992266A (en) | 2011-03-30 |
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| CN 201010577196 Pending CN101992266A (en) | 2010-12-07 | 2010-12-07 | Manufacturing method for investment casting wax model |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102248122A (en) * | 2011-06-25 | 2011-11-23 | 深圳技师学院 | Female mould used for making wax mould in dewaxing casting process as well as manufacturing method and application thereof |
| CN102658352A (en) * | 2012-03-18 | 2012-09-12 | 山东理工大学 | Method for manufacturing high temperature resistant casting resin-die |
| CN102699273A (en) * | 2012-05-14 | 2012-10-03 | 宁波霍思特精密机械有限公司 | Precision casting method for large-scale aluminium alloy impeller |
| CN102773408A (en) * | 2012-06-18 | 2012-11-14 | 杭州先临快速成型技术有限公司 | Method for rapidly manufacturing low-temperature alloy pouring mould by high-temperature resistant silicon rubber |
| CN102921884A (en) * | 2012-10-24 | 2013-02-13 | 山东理工大学 | Ceramic-type precision casting technology |
| CN103611879A (en) * | 2013-11-18 | 2014-03-05 | 山东宏泰机电科技有限公司 | Quick manufacturing method of resin casting mold based on SLS (selective laser sintering) resin sand mold |
| CN103801658A (en) * | 2014-02-17 | 2014-05-21 | 山东旗开重型机械有限公司 | Manufacturing method of ceramic mold shell |
| CN109047656A (en) * | 2018-09-26 | 2018-12-21 | 上海艺极模具有限公司 | A kind of production method and foaming mould of the master mold of foaming mould |
| CN110090924A (en) * | 2019-05-30 | 2019-08-06 | 保定风帆精密机械科技有限公司 | A kind of Wax mold of interior reticulate pattern casing precision casting and its manufacture and casting method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248122B (en) * | 2011-06-25 | 2013-07-10 | 深圳技师学院 | Female mould used for making wax mould in dewaxing casting process as well as manufacturing method and application thereof |
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| CN102658352A (en) * | 2012-03-18 | 2012-09-12 | 山东理工大学 | Method for manufacturing high temperature resistant casting resin-die |
| CN102699273A (en) * | 2012-05-14 | 2012-10-03 | 宁波霍思特精密机械有限公司 | Precision casting method for large-scale aluminium alloy impeller |
| CN102699273B (en) * | 2012-05-14 | 2013-12-25 | 宁波霍思特精密机械有限公司 | Precision casting method for large-scale aluminium alloy impeller |
| CN102773408A (en) * | 2012-06-18 | 2012-11-14 | 杭州先临快速成型技术有限公司 | Method for rapidly manufacturing low-temperature alloy pouring mould by high-temperature resistant silicon rubber |
| CN102773408B (en) * | 2012-06-18 | 2014-07-23 | 杭州先临快速成型技术有限公司 | Method for rapidly manufacturing low-temperature alloy pouring mould by high-temperature resistant silicon rubber |
| CN102921884A (en) * | 2012-10-24 | 2013-02-13 | 山东理工大学 | Ceramic-type precision casting technology |
| CN103611879A (en) * | 2013-11-18 | 2014-03-05 | 山东宏泰机电科技有限公司 | Quick manufacturing method of resin casting mold based on SLS (selective laser sintering) resin sand mold |
| CN103801658A (en) * | 2014-02-17 | 2014-05-21 | 山东旗开重型机械有限公司 | Manufacturing method of ceramic mold shell |
| CN109047656A (en) * | 2018-09-26 | 2018-12-21 | 上海艺极模具有限公司 | A kind of production method and foaming mould of the master mold of foaming mould |
| CN110090924A (en) * | 2019-05-30 | 2019-08-06 | 保定风帆精密机械科技有限公司 | A kind of Wax mold of interior reticulate pattern casing precision casting and its manufacture and casting method |
| CN110090924B (en) * | 2019-05-30 | 2024-02-09 | 保定风帆精密机械科技有限公司 | Wax mould for inner net sleeve precise casting and manufacturing and casting method thereof |
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Application publication date: 20110330 |