CN111070661A - Manufacturing method of casting mold - Google Patents
Manufacturing method of casting mold Download PDFInfo
- Publication number
- CN111070661A CN111070661A CN201811212073.1A CN201811212073A CN111070661A CN 111070661 A CN111070661 A CN 111070661A CN 201811212073 A CN201811212073 A CN 201811212073A CN 111070661 A CN111070661 A CN 111070661A
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- CN
- China
- Prior art keywords
- printing
- casting mold
- casting
- substrate
- mold
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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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/04—Pattern plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of the parts to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a manufacturing method of a casting die, which comprises the following steps: step 1, designing a casting mold by using three-dimensional mechanical design software: step 2, evaluating the size and shape of the casting mold, and performing segmentation design if necessary: and 3, generating a model file acceptable by the 3D printing slicing software: and 4, slicing the model file by using 3D printing slicing software and generating a printing file: step 5, printing a casting mold or a block by using a 3D printer: and 6, if the mold is divided, assembling the printed blocks or the printed substrate: and 7, treating the surface of the casting mould, removing surface defects, filling gaps and pits, and polishing smoothly to finish the manufacture.
Description
Technical Field
The invention belongs to the field of manufacturing of mechanical casting molds.
Background
The prior common casting mold mainly comprises a wood mold and a metal mold, wherein the wood mold has the advantage of low material cost, but needs to be manually manufactured by special technical workers, so that the manufacturing efficiency is low, the mold with a complex shape is difficult to manufacture, the metal mold needs to be manufactured by complex numerical control machining, and the wood mold is not suitable for the production of small-batch products due to high cost.
Disclosure of Invention
The present invention has been made in view of the above problems, and it is an object of the present invention to provide a casting mold manufactured by a newly developed 3D printing technique, which can remarkably simplify a manufacturing process, and can easily manufacture a casting mold having a relatively complicated shape, which has not only low cost of a wood mold but also durability of a part of a metal mold, and which can provide a completely new choice for manufacturing the casting mold.
The casting mold manufacturing method of the present invention includes the following steps.
And 2, performing 3D printing evaluation after the casting mold is designed, firstly evaluating the maximum size of the casting mold, if the maximum size of the casting mold is smaller than the maximum printing size of the 3D printer, omitting the step 3 to perform mold integral printing, if the maximum size of the casting mold is larger than the maximum printing size of the 3D printer, performing mold segmentation printing, and if the casting mold is in a plate shape and other specific shapes, adopting a mold substrate to print.
And 3, when the maximum size of the casting mold is larger than the maximum printing size of the 3D printer, the casting mold needs to be divided and printed, and the division and printing is to divide the casting mold into a plurality of blocks with the sizes meeting the printing conditions by using three-dimensional mechanical design software, so that the printer can print each block respectively.
And 4, the casting mold is in a plate shape and can be printed by adopting a mold substrate, the mold substrate shown in the figure 2 adopts any one of a wood plate, an engineering plastic plate or a metal plate as the substrate, and various convex parts on the plate are divided to be used as printing division blocks, so that a printer can respectively print each division block.
And 5, generating an STL format model file which can be accepted by 3D printing slicing software after the casting mold is designed or divided.
And 6, slicing the model file of the casting mold by using 3D printing slicing software, wherein the slicing comprises parameters such as printing temperature, outer layer thickness, internal filling rate and the like, and generating a GCODE format universal printing file which can be accepted by a 3D printer after the processing is finished.
And 7, importing the general printing file into a 3D printer to print the general printing file in a casting mold.
And 8, assembling the printed blocks, fastening the connecting steps of the blocks, and fixing the blocks into a whole by using screws.
And 9, surface treatment of the casting mold, namely removing surface bulge defects caused in printing, filling uneven surfaces, seams and screw holes with paint spraying putty, and polishing the casting mold by using a polisher and abrasive paper after the putty is dried, thus finishing the manufacturing of the casting mold.
Furthermore, the main characteristic of the division printing in the step 3 is the connection position of each block, and the invention adopts a step screw connection mode as shown in fig. 1, which has the effect of ensuring the accurate and firm connection of each block when the casting mold is assembled.
Furthermore, the main characteristic of the substrate and the dividing block in step 4 is that they are connected by screws.
Further, in step 7 the casting mould is printed and is characterized in that PETG printing consumables are adopted, the consumables commonly used in 3D printing are PLA and ABS, because PLA mechanical toughness is poor and broken very easily and PLA is not high temperature resistant, softening deformation appears when the temperature is greater than 70 degrees centigrade, printing deformation appears very easily in ABS's printing shrinkage factor, the printing and the use of casting mould can not be guaranteed to above-mentioned two consumables, PETG printing consumables's comprehensive mechanical properties is good has sufficient hardness and toughness, printing shrinkage factor is low, the effect lies in that the shortcoming that can overcome above-mentioned consumables has guaranteed casting mould size precision and in-service use requirement.
Furthermore, the screw fixation in the step 8 is mainly characterized in that a built-in design is adopted, and the effect is that the screw and the nut are not higher than the outer surface of the casting mold, so that the surface of the mold is ensured to be flat.
Furthermore, the step buckling of each block in step 8 is mainly characterized in that an epoxy resin adhesive is filled in a step gap, the ratio of the epoxy resin to the curing agent in the adhesive is 3:1, and the adhesive has the effect of ensuring the integrity of the casting mold.
The invention has the beneficial effects that: compared with the existing wood pattern manufacturing technology, the manufacturing cost of the invention is basically the same, but the invention has more accurate manufacturing size, lower manufacturing difficulty and more obvious advantages for casting molds with complex shapes, the casting molds manufactured by the invention do not need experienced technical workers to be implemented more easily, and the surface hardness of the PETG material used by the invention is higher than that of the wood pattern, so the service life of the mold is also longer than that of the wood pattern. Compared with the existing metal mold manufacturing technology, the invention does not need complex machining and has obvious manufacturing cost advantage.
Drawings
FIG. 1 is a schematic view of a mold division printing block connection according to the present invention.
FIG. 2 is a schematic view of a mold substrate printing connection according to the present invention.
In the figure, 1, a block is divided; 2. a substrate.
Detailed Description
When the maximum size of the casting mold is smaller than the maximum printing size of the 3D printer [ embodiment 1 ], the mold integral printing is performed as follows.
And 2, slicing the model file of the casting mold by using 3D printing slicing software, wherein the slicing comprises parameters such as printing temperature, outer layer thickness, internal filling rate and the like, and generating a GCODE format universal printing file which can be accepted by a 3D printer after the processing is finished.
And 3, importing the general printing file into a 3D printer to print the general printing file in a casting mold.
And 4, surface treatment of the casting mold, namely removing some surface protrusion defects caused in printing, filling the uneven surface with paint putty, and polishing the casting mold by using a polisher and abrasive paper after the putty is dried, thus finishing the manufacturing of the casting mold.
When the maximum size of the casting mold is larger than the maximum printing size of the 3D printer, the mold division printing is performed as follows.
And 2, carrying out segmentation design on the casting mold, segmenting the casting mold into blocks which accord with the printing size and are provided with connecting screw holes and steps, and generating the STL format model file which can be accepted by the 3D printing slicing software after segmentation is finished.
And 3, slicing the blocked model file by using 3D printing slicing software, wherein the slicing comprises parameters such as printing temperature, outer layer thickness, internal filling rate and the like, and generating a GCODE format universal printing file which can be accepted by a 3D printer after the slicing is completed.
And 4, importing the general printing file into a 3D printer to perform each block printing.
And 5, assembling the printed blocks, fastening the connecting steps of the blocks, filling epoxy resin adhesives in the gaps of the steps, and fixing the blocks into a whole by using screws.
And 6, treating the surface of the casting mold, namely removing some surface bulge defects caused in printing, filling uneven surfaces, seams and screw holes with paint putty, and polishing the casting mold by using a polisher and abrasive paper after the putty is dried, thus finishing the manufacturing of the casting mold.
[ example 3 ] the casting mold is a mold substrate printing method performed in the following steps under a specific simple shape condition such as a plate shape.
And 2, carrying out segmentation design on the casting mold, wherein the segmentation is to segment the convex shape part in each direction of the plate-shaped piece to enable the casting mold to become a convex segmentation block part and a substrate part, designing connecting screw holes of the segmentation block and the substrate, and generating an STL (Standard template library) format model file which can be accepted by 3D printing slicing software from the segmentation block part after the segmentation is finished.
And 3, slicing the model file of the segmentation block by using 3D printing slicing software, wherein the slicing comprises parameters such as printing temperature, outer layer thickness, internal filling rate and the like, and generating a GCODE format universal printing file which can be accepted by a 3D printer after the processing is finished.
And 4, importing the general printing file into a 3D printer to print each partition block.
And 5, manufacturing the substrate by using any one of a wood plate, a plastic plate and an aluminum plate with the same thickness as the substrate, wherein the manufacturing comprises the steps of processing the substrate into a required shape and processing a fixing screw hole of the partition block.
And step 6, assembling the divided blocks on the substrate, filling epoxy resin adhesives in the connecting gaps of the divided blocks, and fixing the divided blocks and the substrate into a whole by using screws.
And 7, treating the surface of the casting mold, namely removing some surface bulge defects caused in printing, filling uneven surfaces, seams and screw holes with paint putty, and polishing the casting mold by using a polisher and abrasive paper after the putty is dried, thus finishing the manufacturing of the casting mold.
Claims (6)
1. A method of manufacturing a casting mold, comprising the steps of:
step 1, designing a casting mold by using three-dimensional mechanical design software, wherein parameters such as casting inclination, casting shrinkage, machining allowance and parting surface are determined;
step 2, determining to adopt integral printing, division printing or substrate printing according to the size and the shape of the casting mold after the casting mold is designed;
step 3, performing integral printing when the maximum size of the casting mold is smaller than the maximum printing size of the 3D printer, performing casting mold segmentation printing when the maximum size of the casting mold is larger than the maximum printing size of the 3D printer, wherein the segmentation printing is to use three-dimensional mechanical design software to segment the casting mold into a plurality of blocks with sizes meeting printing conditions, and the casting mold belongs to a plate-shaped simple-shaped casting mold substrate for printing;
step 4, generating an STL format model file which can be accepted by 3D printing slicing software after the casting mold design or segmentation is finished;
step 5, slicing the model file of the casting mold by using 3D printing slicing software, wherein the slicing comprises parameters such as printing temperature, outer layer thickness, internal filling rate and the like, and generating a GCODE format universal printing file which can be accepted by a 3D printer after the slicing is completed;
step 6, importing the general printing file into a 3D printer to perform casting mold printing or partition block printing;
step 7, assembling the blocks of the split printing or the substrate printing, wherein for the split printing, the connecting steps of the blocks are buckled, the blocks are fixed into a whole by screws, and for the substrate printing, the blocks and the substrate are fixed into a whole by screws;
and 8, treating the surface of the casting mold, namely removing some surface bulge defects caused in printing, filling uneven surfaces, seams and screw holes with paint putty, and polishing the casting mold by using a polisher and abrasive paper after the putty is dried, thus finishing the manufacturing of the casting mold.
2. The method for casting mold division printing in step 3 according to claim 1, wherein the connection portion is connected by a step screw as shown in fig. 1, which ensures the accurate and firm connection of the blocks during the assembly of the casting mold.
3. The method for printing a casting mold substrate according to claim 1, wherein any one of a wooden plate, an engineering plastic plate, and a metal plate is used as the substrate, and the various convex portions on the plate are divided as divided pieces to be manufactured by 3D printing, and the divided pieces are connected to the substrate by screws.
4. A screw connection according to claim 2 and claim 3, wherein the effect of the built-in design is that the screw and nut are not higher than the outer surface of the casting mould, ensuring that the surface of the mould is flat.
5. The block fixing and the fixing of each block and the substrate according to the step 7 of claim 1 is characterized in that the gap for connection is filled with epoxy resin adhesive, the ratio of epoxy resin to curing agent in the adhesive is 3:1, and the use of the adhesive has the effect of ensuring the integrity of the casting mold.
6. The casting mold or the partition block printing as claimed in the step 6 of claim 1, wherein the PETG printing consumables have the effect of overcoming the defects that general consumables are easy to break, cannot resist high temperature and are easy to generate printing deformation, and the dimensional accuracy and the actual use requirement of the casting mold are ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212073.1A CN111070661A (en) | 2018-10-19 | 2018-10-19 | Manufacturing method of casting mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212073.1A CN111070661A (en) | 2018-10-19 | 2018-10-19 | Manufacturing method of casting mold |
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| CN111070661A true CN111070661A (en) | 2020-04-28 |
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| CN201811212073.1A Pending CN111070661A (en) | 2018-10-19 | 2018-10-19 | Manufacturing method of casting mold |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113459516A (en) * | 2021-06-30 | 2021-10-01 | 共享智能装备有限公司 | Combined 3D printing method, printer, system and storage medium |
| CN113560603A (en) * | 2021-06-18 | 2021-10-29 | 河北机电职业技术学院 | Machining method of bent steel pipe forming die based on 3D printing |
| CN113715358A (en) * | 2021-09-09 | 2021-11-30 | 广东动智技术有限公司 | Method for 3D printing of shell sample on disinfection robot |
| CN113927891A (en) * | 2021-10-13 | 2022-01-14 | 深圳市犇犇手板模型有限公司 | Manufacturing process of rapid-forming hand plate model |
| RU2765909C1 (en) * | 2020-12-30 | 2022-02-04 | Автономная некоммерческая организация высшего образования «Университет Иннополис» | Method for manufacturing a casting pattern |
| CN114406188A (en) * | 2020-10-28 | 2022-04-29 | 北京鉴衡认证中心有限公司 | Manufacturing method of casting mold and casting mold |
| US20220219356A1 (en) * | 2021-01-12 | 2022-07-14 | Becklin Holdings, Inc. | Compression molding utilizing an elastomeric compression tool |
| RU2782692C1 (en) * | 2021-12-30 | 2022-10-31 | Автономная некоммерческая организация высшего образования "Университет Иннополис" | Method for manufacturing the foundry pattern |
-
2018
- 2018-10-19 CN CN201811212073.1A patent/CN111070661A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114406188A (en) * | 2020-10-28 | 2022-04-29 | 北京鉴衡认证中心有限公司 | Manufacturing method of casting mold and casting mold |
| RU2765909C1 (en) * | 2020-12-30 | 2022-02-04 | Автономная некоммерческая организация высшего образования «Университет Иннополис» | Method for manufacturing a casting pattern |
| US20220219356A1 (en) * | 2021-01-12 | 2022-07-14 | Becklin Holdings, Inc. | Compression molding utilizing an elastomeric compression tool |
| WO2022155074A1 (en) * | 2021-01-12 | 2022-07-21 | Becklin Holdings, Inc. | Compression molding utilizing an elastomeric compression tool |
| CN113560603A (en) * | 2021-06-18 | 2021-10-29 | 河北机电职业技术学院 | Machining method of bent steel pipe forming die based on 3D printing |
| CN113459516A (en) * | 2021-06-30 | 2021-10-01 | 共享智能装备有限公司 | Combined 3D printing method, printer, system and storage medium |
| CN113715358A (en) * | 2021-09-09 | 2021-11-30 | 广东动智技术有限公司 | Method for 3D printing of shell sample on disinfection robot |
| CN113927891A (en) * | 2021-10-13 | 2022-01-14 | 深圳市犇犇手板模型有限公司 | Manufacturing process of rapid-forming hand plate model |
| CN113927891B (en) * | 2021-10-13 | 2023-03-10 | 深圳市犇犇手板模型有限公司 | Manufacturing process of rapid prototyping hand plate model |
| RU2782692C1 (en) * | 2021-12-30 | 2022-10-31 | Автономная некоммерческая организация высшего образования "Университет Иннополис" | Method for manufacturing the foundry pattern |
| RU2782691C1 (en) * | 2021-12-30 | 2022-10-31 | Автономная некоммерческая организация высшего образования "Университет Иннополис" | Method for manufacturing the foundry pattern |
| RU215407U1 (en) * | 2022-05-04 | 2022-12-12 | Акционерное общество "Научно-производственная корпорация "Уралвагонзавод" имени Ф.Э. Дзержинского" | DEVICE FOR MANUFACTURING CASTING MOLDS |
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