CN116512132A - Method for removing burrs of 3D printing collimator by using liquid sand blasting - Google Patents
Method for removing burrs of 3D printing collimator by using liquid sand blasting Download PDFInfo
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- CN116512132A CN116512132A CN202310314619.9A CN202310314619A CN116512132A CN 116512132 A CN116512132 A CN 116512132A CN 202310314619 A CN202310314619 A CN 202310314619A CN 116512132 A CN116512132 A CN 116512132A
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- printing
- burrs
- collimator
- liquid
- sand blasting
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- 238000010146 3D printing Methods 0.000 title claims abstract description 91
- 239000007788 liquid Substances 0.000 title claims abstract description 54
- 238000005488 sandblasting Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000000227 grinding Methods 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000005422 blasting Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000007639 printing Methods 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 239000003082 abrasive agent Substances 0.000 description 3
- 238000002591 computed tomography Methods 0.000 description 3
- 238000005111 flow chemistry technique Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/083—Deburring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
- B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention discloses a method for removing burrs of a 3D printing collimator by utilizing liquid sand blasting, which specifically comprises the following steps: (1) cutting off the 3D print; (2) vertically clamping the 3D printing piece by adopting a clamping tool; (3) preparing grinding fluid; (4) performing liquid sand blasting treatment on the upper part of the 3D printing piece; (5) carrying out liquid sand blasting treatment on the lower part of the 3D printing piece; and (6) cleaning and drying the 3D printing piece. According to the invention, a bidirectional liquid sand blasting treatment mode is adopted, the 3D printing part (collimator) is kept to be arranged in an up-down transparent mode, and under the impact and cutting action of abrasive in high-speed jet flow on the inner wall of the slender hole, burrs on the hole wall and attachments generated in the printing process and cutting burrs generated in cutting can be perfectly removed, so that the order of magnitude of the burrs is reduced from a few meters to a few micrometers, and the burrs of the 3D printing part can be quickly removed, and the method is simple and easy to operate.
Description
Technical Field
The invention relates to the technical field of collimator manufacturing of medical CT (computed tomography) machines, in particular to a method for removing burrs of a 3D printing collimator by using liquid sand blasting.
Background
As a rapid forming technology, the 3D printing technology is increasingly widely used, and for a collimator of a medical CT machine, the length, width and height of the collimator are usually not more than 150mm by 100mm due to the smaller size, so the collimator is suitable for 3D printing manufacture.
In the prior art, a collimator adopting 3D printing is often provided with a porous structure, and metal spherical powder is often attached to the inside of the porous structure, so that burrs are formed, and the burrs are required to be removed.
Existing methods for removing burrs in holes are generally abrasive flow machining techniques. The principle of the abrasive flow processing technology for realizing the deburring method is as follows: the abrasive flow processing technology realizes deburring and is also called extrusion grinding processing technology, and is a new finishing processing technology developed in the beginning of the 70 s. The grinding material suspended in semi-solid medium with viscoelasticity flows reciprocally at high speed under the action of certain extrusion force to the surface to be machined of the part to produce grinding action to eliminate trace metals. In abrasive flow processing, when a grinding medium passes through a channel, the cutting amounts of different parts of the channel are inconsistent, and when the grinding medium passes through the channel, the cutting effect is weak and only the polishing effect is achieved; when the abrasive flow medium passes through the variable cross section and the turning position, the cutting effect is strong. Thus, machining burrs are typically removed over a restricted cross-section of the abrasive flow path. The strong cutting action of abrasive flow machining on the limiting section is utilized, burrs are removed firstly, sharp corners at the intersecting line are rounded, and meanwhile, the burrs and the cutting ground by the abrasive flow are contained in a grinding medium and taken away together with the abrasive flow.
However, the following disadvantages exist in the implementation of the deburring method by the abrasive flow machining technique:
1. this process is suitable for burrs that have just entered the finishing stage, but is not suitable for small and long holes;
2. the thin wall (0.1 mm thick) of the 3D printing part is easy to damage;
3. the equipment for removing burrs of the abrasive particle flow is high in price, hundreds of thousands of devices are needed for entering the gate, and the processing cost is high;
4. the process needs to independently manufacture tools aiming at products, and has high technical requirements.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, and provides a method for removing burrs of a 3D printing collimator by using liquid sand blasting, which adopts a bidirectional liquid sand blasting treatment mode and keeps a 3D printing piece (collimator) to be arranged in an up-down transparent mode, and can completely remove burrs and attachments of a hole wall and cutting burrs generated by cutting in a printing process under the impact and cutting action of abrasive materials in high-speed jet flow on the inner wall of an elongated hole, so that the order of magnitude of the burrs is reduced from a few meters to a few micrometers, and the burrs of the 3D printing piece are removed rapidly.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a method for removing burrs of a 3D printing collimator by using liquid sand blasting, which is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, cutting a 3D printing piece from a substrate of a 3D printer by adopting cutting equipment;
s2, vertically clamping the 3D printing piece cut by the step S1 by adopting a clamping tool, so that the 3D printing piece is arranged in a vertically transparent manner;
s3, mixing the abrasive with water to obtain an abrasive solution, and continuously stirring the abrasive solution to uniformly mix the abrasive with the water and prevent the abrasive from precipitating;
s4, placing a clamping tool clamped with the 3D printing piece on a built-in platform of a liquid sand blasting machine, fixing the clamping tool, setting working parameters of the liquid sand blasting machine, and carrying out liquid sand blasting on the upper part of the 3D printing piece;
s5, after the liquid sand blasting treatment is finished on the upper part of the 3D printing piece, the fixing of the clamping tool is released, the 3D printing piece is turned over for 180 degrees, the lower part of the 3D printing piece faces upwards, the clamping tool is fixed again, the working parameters of the same liquid sand blaster in the step S4 are set again, and the liquid sand blasting treatment is carried out on the lower part of the 3D printing piece;
s6, after the lower part of the 3D printing piece is subjected to liquid sand blasting treatment, the 3D printing piece is taken out, and the 3D printing piece is cleaned and dried.
Further, in the step S1, the cutting device is a wire cutting device.
Further, in step S2, the clamping tool includes upper tool and lower tool that are fixedly connected, the inside of lower tool is equipped with the location chamber that runs through its up and down terminal surface, is used for the clamping 3D printing piece, the inside of upper tool be equipped with run through its up and down terminal surface and with the communicating grinding fluid runner of location chamber, sealing connection has the nozzle on the top surface of upper tool, the inside of nozzle be equipped with the communicating grinding fluid of grinding fluid runner sprays the chamber, the top and one side of nozzle correspond respectively be equipped with the communicating grinding fluid interface of grinding fluid injection chamber and compressed air interface.
Further, the joint surface of the lower tool and the upper tool surrounds the periphery of the positioning cavity, and the joint surface of the upper tool and the nozzle surrounds the periphery of the grinding fluid flow channel.
Further, in the step S3, the abrasive material is alumina or silicon carbide, and the mass percentage of the alumina or silicon carbide to the water is 5-30%.
Further, in the steps S4 and S5, the working parameters of the liquid sand blaster are as follows: the sand blasting time is 5-30min, the sand blasting pressure is 0.1-0.2Mpa, the distance from the nozzle to the 3D printing piece is 100-200mm, and the flow of compressed air is 0.5-0.8m3/min.
Further, in the step S6, an ultrasonic cleaner is used as the cleaning device.
Further, the frequency of the ultrasonic cleaner is 28-35kHz, the temperature of the cleaning agent is 20-30 ℃, and the cleaning time is 5-10min.
Further, in the step S6, the drying device adopts an oven.
Further, the drying temperature is 40-120 ℃, the drying time is 5-30min, and the rotating speed of a fan of the oven is 1200-2400r/min.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, a bidirectional liquid sand blasting treatment mode is adopted, the 3D printing part (collimator) is kept to be arranged in an up-down transparent mode, and under the impact and cutting action of abrasive in high-speed jet flow on the inner wall of the slender hole, burrs on the hole wall and attachments generated in the printing process and cutting burrs generated in cutting can be perfectly removed, so that the order of magnitude of the burrs is reduced from a few meters to a few micrometers, and the burrs of the 3D printing part can be quickly removed, and the method is simple and easy to operate.
Drawings
Fig. 1 is a schematic view of a collimator structure before deburring.
Fig. 2 is an enlarged schematic view of the structure of the portion a in fig. 1.
Fig. 3 is an enlarged view of a partial structure of the collimator before deburring.
Fig. 4 is a schematic structural view of a collimator after deburring by the method of the present invention.
Fig. 5 is an enlarged schematic view of the structure of the portion B in fig. 4.
Fig. 6 is an enlarged view of a partial structure of a collimator after deburring by the method of the present invention.
Fig. 7 is a schematic structural diagram of a clamping tool and a nozzle of a liquid blasting machine adopted by the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, a method for removing burrs of a 3D printing collimator by using liquid blasting, specifically comprises the following steps:
step one, a wire cutting device is adopted to cut the 3D printing piece 1 from a substrate of a 3D printer (namely, a collimator for 3D printing, a metal piece, and the length, width and height of which are generally not more than 150mm by 100mm, and the following description applies).
And step two, a clamping tool is adopted to vertically clamp the 3D printing piece 1 cut off in the step S1, so that the 3D printing piece 1 is arranged in an up-down through manner, and preparation is made for subsequent liquid sand blasting treatment.
It should be noted that, because the jet direction of the grinding fluid is the vertical direction from top to bottom, therefore, the 3D printing piece 1 is vertically clamped, the D printing piece 1 is in the vertical through arrangement, and the jet flow and the fine holes of the 3D printing piece 1 can be kept parallel, so that the effect of removing burrs in the holes can be improved.
Specifically, the clamping frock is equipped with the location chamber 4 that runs through its up and down terminal surface including upper frock 2 and lower frock 3 that looks fixed connection, the inside of lower frock 3 is equipped with and is used for clamping 3D printing piece 1, the inside of upper frock 2 is equipped with runs through its up and down terminal surface and with the communicating grinding fluid runner 5 of location chamber, sealing connection has nozzle 6 on the top surface of upper frock 2, the inside of nozzle 6 is equipped with the communicating grinding fluid injection chamber 7 with grinding fluid runner 5, the top and the one side of nozzle 6 correspond respectively and are equipped with grinding fluid interface 8 and compressed air interface 9 with grinding fluid injection chamber 7 communicating.
Further, the joint surface of the lower tool 3 and the upper tool 2 surrounds the periphery of the positioning cavity 4, and the joint surface of the upper tool 2 and the nozzle 6 surrounds the periphery of the grinding fluid flow passage 5, so that a good sealing effect is achieved.
It should be noted that, when the 3D printing piece 1 is vertically clamped, the upper portion of the 3D printing piece 1 faces upwards, the 3D printing piece 1 is firstly placed into the positioning cavity 4, and then the upper tool 2 is fixedly connected to the lower tool 3, so that the 3D printing piece 1 is clamped.
And step three, mixing the abrasive with water to obtain an abrasive solution, and continuously stirring the abrasive solution to uniformly mix the abrasive with the water and prevent the abrasive from precipitating.
Specifically, the abrasive adopts aluminum oxide or silicon carbide, and the mass percentage of the aluminum oxide or silicon carbide to water is 20%.
And fourthly, placing the clamping tool clamped with the 3D printing piece 1 on a built-in platform of a liquid sand blasting machine, fixing the clamping tool, setting working parameters of the liquid sand blasting machine, and carrying out liquid sand blasting treatment on the upper part of the 3D printing piece 1.
When the liquid sand blasting treatment is carried out, the compressed air carries the grinding fluid to rapidly enter and exit the inner hole of the 3D printing part 1 under the conditions of high pressure and high speed, and the grinding material, namely aluminum oxide or silicon carbide, collides with burrs 11 on the inner wall of the inner hole of the 3D printing part 1, rubs and extrudes, and the burrs 11 are removed.
Specifically, in this step, the working parameters of the liquid blasting machine are: the blasting time was 30min, the blasting pressure was 0.15Mpa, the distance from the nozzle 6 to the 3D print was 200mm, and the flow rate of the compressed air was 0.5m3/min.
And fifthly, after the liquid sand blasting treatment is finished on the upper part of the 3D printing piece 1, the fixing of the clamping tool is released, the 3D printing piece 1 is turned over for 180 degrees, the lower part of the 3D printing piece 1 faces upwards, the clamping tool is fixed again, the working parameters of the liquid sand blasting machine with the same steps are set again, and the liquid sand blasting treatment is carried out on the lower part of the 3D printing piece 1.
In the same way, when the liquid sand blasting treatment is carried out, the compressed air carries the grinding fluid to rapidly enter and exit the inner hole of the 3D printing piece 1 under the conditions of high pressure and high speed, and the grinding material, namely aluminum oxide or silicon carbide, collides with burrs 11 on the inner wall of the inner hole of the 3D printing piece 1, rubs and extrudes, and removes the burrs 11.
It should be noted that before turning over the 3D printing piece 1 by 180 °, the upper tool 2 needs to be removed first, the 3D printing piece 1 is taken out from the positioning cavity 4, after turning over by 180 °, the lower part of the 3D printing piece 1 faces upwards, and then the 3D printing piece 1 is placed into the positioning cavity 4, and the upper tool 2 is fixedly connected to the lower tool 3 again, so that the 3D printing piece 1 is clamped.
Specifically, in this step, the working parameters of the liquid blasting machine are: the blasting time was 30min, the blasting pressure was 0.15Mpa, the distance from the nozzle 6 to the 3D print was 200mm, and the flow rate of the compressed air was 0.5m3/min.
And step six, after the lower part of the 3D printing piece 1 is subjected to the liquid sand blasting treatment, the 3D printing piece 1 is taken out, and the 3D printing piece 1 is cleaned and dried.
Specifically, the cleaning equipment adopts an ultrasonic cleaner.
Further, the working parameters of the ultrasonic cleaner are as follows: the frequency is 28kHz, the temperature of the cleaning agent is 30 ℃, and the cleaning time is 10min.
In addition, the drying equipment adopts an oven.
Further, the working parameters of the oven are as follows: the drying temperature is 110 ℃, the drying time is 25min, and the rotating speed of a fan of the oven is 2000r/min.
The invention is further illustrated below:
according to the invention, the grinding fluid (mixed fluid of grinding materials and water) which is uniformly stirred is conveyed into a spray gun of a liquid sand blasting machine through the grinding fluid pump. The liquid sand blasting machine takes compressed air as the accelerating power of the grinding fluid, the compressed air enters the spray gun through the air pipe, and the compressed air accelerates the grinding fluid entering the spray gun in the spray gun and is ejected out through the nozzle.
The ejected high-speed jet flow is parallel to the slender hole of the 3D printing piece, and burrs and convex attachments on the hole wall of the 3D printing piece can be removed rapidly under the impact and cutting actions of abrasive materials in the high-speed jet flow on the inner wall of the slender hole, so that a certain cleanliness is obtained.
Since the 3D print typically has hundreds to thousands of internal elongated holes, i.e., a porous structure, and the elongated holes Kong Jinhu are parallel to each other and pass up and down, this provides a very good condition for the entry of high velocity jets. However, other 3D printed parts, which are not collimators, often have no porous structure due to their different internal structures, and generally can only be used for removing surface burrs and polishing the surface by dry blasting.
In general, the deburring effect has a certain relationship with the working parameters of the liquid blasting machine, namely with the blasting time, the blasting pressure, the distance from the nozzle to the 3D print (collimator) and the flow rate of the compressed air, as shown in the following table.
As shown in the table, when the sand blasting time is 30min, the sand blasting pressure is 0.15Mpa, the distance from the nozzle to the 3D printing piece is 200mm, and the flow rate of the compressed air is 0.5m < 3 >/min, the order of magnitude of burrs can reach 5 mu m, and at the moment, the optimal deburring effect is achieved.
Although the present disclosure describes embodiments, not every embodiment is described in terms of a single embodiment, and such description is for clarity only, and one skilled in the art will recognize that the embodiments described in the disclosure as a whole may be combined appropriately to form other embodiments that will be apparent to those skilled in the art.
Therefore, the above description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A method for removing burrs of a 3D printing collimator by using liquid sand blasting, which is characterized by comprising the following steps: the method specifically comprises the following steps:
s1, cutting a 3D printing piece from a substrate of a 3D printer by adopting cutting equipment;
s2, vertically clamping the 3D printing piece cut by the step S1 by adopting a clamping tool, so that the 3D printing piece is arranged in a vertically transparent manner;
s3, mixing the abrasive with water to obtain an abrasive solution, and continuously stirring the abrasive solution to uniformly mix the abrasive with the water and prevent the abrasive from precipitating;
s4, placing a clamping tool clamped with the 3D printing piece on a built-in platform of a liquid sand blasting machine, fixing the clamping tool, setting working parameters of the liquid sand blasting machine, and carrying out liquid sand blasting on the upper part of the 3D printing piece;
s5, after the liquid sand blasting treatment is finished on the upper part of the 3D printing piece, the fixing of the clamping tool is released, the 3D printing piece is turned over for 180 degrees, the lower part of the 3D printing piece faces upwards, the clamping tool is fixed again, the working parameters of the same liquid sand blaster in the step S4 are set again, and the liquid sand blasting treatment is carried out on the lower part of the 3D printing piece;
s6, after the lower part of the 3D printing piece is subjected to liquid sand blasting treatment, the 3D printing piece is taken out, and the 3D printing piece is cleaned and dried.
2. A method of removing 3D printing collimator burrs using liquid blasting according to claim 1, wherein: in the step S1, the cutting device is a wire cutting device.
3. A method of removing 3D printing collimator burrs using liquid blasting according to claim 1, wherein: in the step S2, the clamping tool comprises an upper tool and a lower tool which are fixedly connected, a positioning cavity penetrating through the upper end face and the lower end face of the lower tool is formed in the lower tool and used for clamping the 3D printing piece, a grinding fluid flow passage penetrating through the upper end face and the lower end face of the upper tool and communicated with the positioning cavity is formed in the upper tool, a nozzle is connected to the top surface of the upper tool in a sealing mode, a grinding fluid injection cavity communicated with the grinding fluid flow passage is formed in the nozzle, and a grinding fluid interface and a compressed air interface communicated with the grinding fluid injection cavity are correspondingly formed in the top and one side of the nozzle respectively.
4. A method of removing 3D printing collimator burrs using liquid blasting according to claim 1, wherein: the joint surface of the lower tool and the upper tool surrounds the periphery of the positioning cavity, and the joint surface of the upper tool and the nozzle surrounds the periphery of the grinding fluid flow passage.
5. A method of removing 3D printing collimator burrs using liquid blasting according to claim 1, wherein: in the step S3, the abrasive adopts alumina or silicon carbide, and the mass percentage of the alumina or the silicon carbide to the water is 5-30%.
6. The method for removing burrs of a 3D printing collimator by using a liquid blasting process as claimed in claim 1, wherein the method comprises the steps ofIn the following steps: in the steps S4 and S5, the working parameters of the liquid sand blaster are as follows: the sand blasting time is 5-30min, the sand blasting pressure is 0.1-0.2Mpa, the distance between the nozzle and the 3D printing piece is 100-200mm, and the flow rate of the compressed air is 0.5-0.8m 3/ min。
7. A method of removing 3D printing collimator burrs using liquid blasting according to claim 1, wherein: in the step S6, the cleaning device adopts an ultrasonic cleaner.
8. A method of removing 3D printing collimator burrs using liquid blasting according to claim 7, wherein: the frequency of the ultrasonic cleaner is 28-35kHz, the temperature of the cleaning agent is 20-30 ℃, and the cleaning time is 5-10min.
9. A method of removing 3D printing collimator burrs using liquid blasting according to claim 1, wherein: in the step S6, the drying device adopts an oven.
10. A method of removing 3D printing collimator burrs using liquid blasting according to claim 9, wherein: the drying temperature is 40-120 ℃, the drying time is 5-30min, and the rotating speed of a fan of the oven is 1200-2400r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310314619.9A CN116512132A (en) | 2023-03-28 | 2023-03-28 | Method for removing burrs of 3D printing collimator by using liquid sand blasting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310314619.9A CN116512132A (en) | 2023-03-28 | 2023-03-28 | Method for removing burrs of 3D printing collimator by using liquid sand blasting |
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| CN116512132A true CN116512132A (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310314619.9A Pending CN116512132A (en) | 2023-03-28 | 2023-03-28 | Method for removing burrs of 3D printing collimator by using liquid sand blasting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117600494A (en) * | 2024-01-24 | 2024-02-27 | 安庆瑞迈特科技有限公司 | Printing method for improving corrosion resistance and strength of 3D printing collimator |
-
2023
- 2023-03-28 CN CN202310314619.9A patent/CN116512132A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117600494A (en) * | 2024-01-24 | 2024-02-27 | 安庆瑞迈特科技有限公司 | Printing method for improving corrosion resistance and strength of 3D printing collimator |
| CN117600494B (en) * | 2024-01-24 | 2024-04-02 | 安庆瑞迈特科技有限公司 | Printing method for improving corrosion resistance and strength of 3D printing collimator |
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