CN212634317U - SLM device capable of saving metal powder - Google Patents
SLM device capable of saving metal powder Download PDFInfo
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- CN212634317U CN212634317U CN202021592753.3U CN202021592753U CN212634317U CN 212634317 U CN212634317 U CN 212634317U CN 202021592753 U CN202021592753 U CN 202021592753U CN 212634317 U CN212634317 U CN 212634317U
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a SLM device for saving metal powder, which comprises a forming cylinder, wherein at least two Z-axis lifting mechanisms are arranged in the forming cylinder, a fixed cylinder is arranged between the two Z-axis lifting mechanisms, and the two Z-axis lifting mechanisms lift the same forming platform; the top of the forming cylinder is fixedly connected with a forming chamber, a powder laying mechanism and a powder falling mechanism are arranged in the forming chamber, the top of the forming chamber is provided with a laser system, and the surface of the forming platform is covered by laser of the laser system. The utility model relates to a practice thrift metal powder's SLM device has solved the problem that powder utilization rate is low when current jumbo size SLM equipment prints annular or thin wall part.
Description
Technical Field
The utility model belongs to the technical field of 3D printing apparatus, concretely relates to practice thrift metal powder's SLM device.
Background
3D printing is a rapid prototyping technique. Based on the digital model file, the hierarchical data of the part is generated by computer aided design and is led into a forming device, and the powder material is sintered layer by layer through a laser so as to realize the forming of the part. The specific process is as follows: the moving system powder laying mechanism lays a layer of powder material on the upper surface of the formed part or the base material, the optical path system scans the section profile of the layer, the layer is sintered, and the layer is bonded with the formed part or the base material; and after the sintering of one layer of section is finished, the motion system drives the forming platform to descend by one layer thickness, the powder spreading device spreads a layer of uniform and dense powder on the forming platform, and the sintering of a new layer of section is carried out until the printing of the whole part is finished.
With the continuous increase of the forming size of SLM equipment, the powder spreading area and the powder spreading amount are also larger and larger. When large-size annular or thin-walled parts are printed, the whole forming platform of the SLM equipment needs to be fully paved with metal powder, however, the powder paved in the hollow part of the part has little effect on the part forming, but increases the load of a motion system, so that the control difficulty of the motion system is increased, the powder utilization rate is reduced, and the production cost is increased. Therefore, on the premise of ensuring the forming quality of the part, the powder is saved as much as possible, and the production cost is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a practice thrift metal powder's SLM device has solved the problem that powder utilization rate is low when current jumbo size SLM equipment prints annular or thin wall part.
The technical scheme adopted by the utility model is that the SLM device for saving metal powder comprises a forming cylinder, at least two Z-axis lifting mechanisms are arranged in the forming cylinder, a fixed cylinder is arranged between the two Z-axis lifting mechanisms, and the two Z-axis lifting mechanisms lift the same forming platform;
the top of the forming cylinder is fixedly connected with a forming chamber, a powder laying mechanism and a powder falling mechanism are arranged in the forming chamber, the top of the forming chamber is provided with a laser system, and the surface of the forming platform is covered by laser of the laser system.
The utility model discloses a characteristics still lie in:
the fixed cylinder is fixedly connected to the bottom of the forming cylinder, the fixed cylinder is in an inverted barrel shape, and the outline of the fixed cylinder is rectangular, circular or irregular.
The Z-axis lifting mechanism comprises a motor, the motor is connected with a lead screw guide rail, a cantilever of the lead screw guide rail is fixedly connected to the bottom of the forming platform, and sealing pieces are arranged between the forming platform and the fixed cylinder and between the forming platform and the forming cylinder respectively.
The sealing element is felt.
The powder spreading mechanism comprises a scraper bracket, a scraper mounting frame is arranged in one side of the scraper bracket, a scraper is arranged in the body of the scraper mounting frame close to the bottom, and the cutting edge end of the scraper extends out of the bottom of the scraper mounting frame;
the powder spreading mechanism further comprises a servo motor positioned on one side of the forming chamber, the shaft end of the servo motor is connected with a driving wheel of a synchronous belt, the synchronous belt is fixedly connected with a scraper bracket, the scraper is perpendicular to the forming platform, the other end of the synchronous belt is provided with an idler wheel, and the idler wheel is fixedly connected to the other side of the forming chamber.
The powder falling mechanism comprises a servo motor, a powder falling barrel and a powder falling shaft, the powder falling barrel is installed on the side wall of the forming chamber, the powder falling shaft is rotatably installed at the bottom of the powder falling barrel, and the servo motor is connected with the powder falling shaft.
The laser system comprises a laser, and a collimation beam expanding lens, a galvanometer and a field lens which are sequentially arranged, wherein light beams of the laser sequentially pass through the collimation beam expanding lens, the galvanometer and the field lens to be emitted onto the forming platform.
The laser system comprises a laser, and a collimation and beam expansion lens, a dynamic focusing lens and a vibrating lens which are sequentially arranged, wherein light beams of the laser sequentially pass through the collimation and beam expansion lens, the dynamic focusing lens and the vibrating lens to be shot onto the forming platform.
The utility model has the advantages that:
the utility model relates to a practice thrift metal powder's SLM device, its cavity portion does not lay the powder when printing large size annular or thin wall part, can effectively alleviate Z axle elevating system's load, and the precision control of being convenient for has improved the metal powder utilization ratio simultaneously, has reduced manufacturing cost.
Drawings
Fig. 1 is a schematic structural diagram of an SLM device for saving metal powder according to the present invention.
In the figure, 1, a forming cylinder, 2, a Z-axis lifting mechanism, 3, a forming platform, 4, a powder spreading mechanism, 5, a fixed cylinder, 6, a workpiece, 7, a laser system, 8, a powder dropping mechanism and 9, a sealing element are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a SLM device for saving metal powder, as a result is shown in figure 1, comprising a forming cylinder 1, at least two Z-axis lifting mechanisms 2 are arranged in the forming cylinder 1, a fixed cylinder 5 is arranged between the two Z-axis lifting mechanisms 2, and the two Z-axis lifting mechanisms 2 lift the same forming platform 3;
the top of the forming cylinder 1 is fixedly connected with a forming chamber, a powder spreading mechanism 4 and a powder dropping mechanism 8 are arranged in the forming chamber, the top of the forming chamber is provided with a laser system 7, and the laser of the laser system 7 covers the surface of the forming platform 3.
Preferably, the fixed cylinder 5 is fixedly connected to the bottom of the forming cylinder 1, the fixed cylinder 5 is in an inverted barrel shape, and the outline of the fixed cylinder 5 is rectangular, circular or irregular.
Preferably, the Z-axis lifting mechanism 2 comprises a motor, the motor is connected with a lead screw guide rail, a cantilever of the lead screw guide rail is fixedly connected to the bottom of the forming platform 3, and sealing members 9 are arranged between the forming platform 3 and the fixing cylinder 5 and between the forming platform and the forming cylinder 1 respectively. Wherein the sealing member 9 is felt.
Preferably, the powder spreading mechanism 4 comprises a scraper bracket, a scraper mounting frame is installed in one side of the scraper bracket, a scraper is arranged in the body of the scraper mounting frame, which is close to the bottom, and the blade end of the scraper extends out of the bottom of the scraper mounting frame;
the powder spreading mechanism 4 further comprises a servo motor positioned on one side of the forming chamber, the shaft end of the servo motor is connected with a driving wheel of a synchronous belt, the synchronous belt is fixedly connected with a scraper bracket, the scraper is perpendicular to the forming platform 3, the other end of the synchronous belt is provided with an idle wheel, and the idle wheel is fixedly connected to the other side of the forming chamber.
Preferably, the powder dropping mechanism 8 comprises a servo motor, a powder dropping barrel and a powder dropping shaft, wherein the powder dropping barrel is arranged on the side wall of the forming chamber, the powder dropping shaft is rotatably arranged at the bottom of the powder dropping barrel, and the servo motor is connected with the powder dropping shaft.
Preferably, the laser system 7 includes a laser, and a collimating beam expander, a galvanometer, and a field lens that are sequentially arranged, and a light beam of the laser sequentially passes through the collimating beam expander, the galvanometer, and the field lens to be incident on the shaping platform 3.
Preferably, the laser system 7 includes a laser, and a collimating beam expander, a dynamic focusing mirror and a galvanometer that are sequentially arranged, and a light beam of the laser sequentially passes through the collimating beam expander, the dynamic focusing mirror and the galvanometer and is emitted onto the forming platform 3.
The utility model relates to a practice thrift metal powder's SLM device, its theory of operation as follows:
opening the SLM equipment, a servo motor and a motor, controlling the Z-axis lifting mechanism 2 to lower the forming platform 3 by one layer thickness compared with the top of the fixed cylinder 5, paving the metal powder of the powder falling mechanism 8 on the forming platform 3 by the powder paving mechanism 4, scanning the section profile of the layer by the laser system 7, and sintering the layer; after the sintering of one layer of section is finished, the Z-axis lifting mechanism 2 drives the forming platform 3 to descend by one layer thickness, a layer of uniform and compact metal powder is paved on the Z-axis lifting mechanism 3 by a scraper of the powder paving mechanism 4, and the sintering of a new layer of section is carried out until the printing of the whole part is finished.
The fixed cylinder 5 does not move in the printing process of the workpiece 6, after the powder dropping mechanism 8 drops a certain amount of metal powder, the powder spreading mechanism 4 spreads the metal powder on the metal base material of the forming platform 3, and the laser system 7 finishes scanning to realize the connection of the workpiece 6 and the metal base material; because the fixed cylinder 5 does not move, only new metal powder is laid on the forming platform 3, so that the utilization rate of the metal powder is improved, and the forming requirement of the part is ensured; due to the reduction of the powder laying amount, the load of the Z-axis lifting mechanism is reduced, and the precision control difficulty is reduced; in addition, the utility model can realize the printing of workpieces 6 with different cross sections by replacing the forming platform 3 and the fixed cylinder 5 according to the different cross section profiles of the workpieces; the square fixed cylinder 5 is adopted to realize the printing of the square section part; the circular fixed cylinder 5 can be used for printing parts with annular sections, and the fixed cylinder 5 with special-shaped sections can be used for printing parts with special-shaped sections.
Claims (8)
1. The SLM device for saving metal powder is characterized by comprising a forming cylinder (1), wherein at least two Z-axis lifting mechanisms (2) are arranged in the forming cylinder (1), a fixed cylinder (5) is arranged between the two Z-axis lifting mechanisms (2), and the two Z-axis lifting mechanisms (2) lift the same forming platform (3);
the forming device is characterized in that a forming chamber is fixedly connected to the top of the forming cylinder (1), a powder laying mechanism (4) and a powder falling mechanism (8) are arranged in the forming chamber, a laser system (7) is arranged on the top of the forming chamber, and the surface of the forming platform (3) is covered by laser of the laser system (7).
2. The SLM device for saving metal powder according to claim 1, wherein the fixed cylinder (5) is fixed to the bottom of the forming cylinder (1), the fixed cylinder (5) is an inverted barrel shape, and the outline of the fixed cylinder (5) is rectangular or circular.
3. The SLM device for saving metal powder according to claim 1, wherein the Z-axis lifting mechanism (2) comprises a motor, the motor is connected with a lead screw guide rail, a cantilever of the lead screw guide rail is fixedly connected to the bottom of the forming platform (3), and a sealing member (9) is arranged between the forming platform (3) and the fixed cylinder (5) and between the forming platform and the forming cylinder (1).
4. A metal powder saving SLM device as claimed in claim 3, characterized in that the sealing (9) is a felt.
5. The SLM device for saving metal powder according to claim 1, wherein the powder spreading mechanism (4) comprises a scraper bracket, a scraper mounting bracket is installed in one side of the scraper bracket, a scraper is installed in the body of the scraper mounting bracket close to the bottom, and the blade end of the scraper extends out of the bottom of the scraper mounting bracket;
the powder spreading mechanism (4) further comprises a servo motor located on one side of the forming chamber, the shaft end of the servo motor is connected with a driving wheel of a synchronous belt, the synchronous belt is fixedly connected with a scraper bracket, the scraper is perpendicular to the forming platform (3), the other end of the synchronous belt is provided with an idler wheel, and the idler wheel is fixedly connected to the other side of the forming chamber.
6. The SLM device for saving metal powder according to claim 1, wherein the powder dropping mechanism (8) comprises a servo motor, a powder dropping barrel and a powder dropping shaft, the powder dropping barrel is installed on the side wall of the forming chamber, the powder dropping shaft is rotatably installed at the bottom of the powder dropping barrel, and the servo motor is connected to the powder dropping shaft.
7. The SLM device for saving metal powder as claimed in claim 1, wherein the laser system (7) comprises a laser and a collimating beam expander, a vibrating mirror and a field lens arranged in sequence, and the beam of the laser sequentially passes through the collimating beam expander, the vibrating mirror and the field lens to be incident on the shaping platform (3).
8. The SLM device for saving metal powder according to claim 1, wherein the laser system (7) comprises a laser and a collimating beam expander, a dynamic focusing mirror and a vibrating mirror arranged in sequence, and the beam of the laser sequentially passes through the collimating beam expander, the dynamic focusing mirror and the vibrating mirror to be incident on the shaping platform (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021592753.3U CN212634317U (en) | 2020-08-04 | 2020-08-04 | SLM device capable of saving metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021592753.3U CN212634317U (en) | 2020-08-04 | 2020-08-04 | SLM device capable of saving metal powder |
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| CN212634317U true CN212634317U (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021592753.3U Active CN212634317U (en) | 2020-08-04 | 2020-08-04 | SLM device capable of saving metal powder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008077A (en) * | 2020-08-04 | 2020-12-01 | 西安铂力特增材技术股份有限公司 | Practice thrift jumbo size SLM equipment of metal powder |
| CN117680714A (en) * | 2024-02-01 | 2024-03-12 | 西安空天机电智能制造有限公司 | Electron beam forming powder spreading device |
-
2020
- 2020-08-04 CN CN202021592753.3U patent/CN212634317U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008077A (en) * | 2020-08-04 | 2020-12-01 | 西安铂力特增材技术股份有限公司 | Practice thrift jumbo size SLM equipment of metal powder |
| CN117680714A (en) * | 2024-02-01 | 2024-03-12 | 西安空天机电智能制造有限公司 | Electron beam forming powder spreading device |
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