CN215279887U - Mechanical synchronous displacement system for ultra-large SLM equipment - Google Patents
Mechanical synchronous displacement system for ultra-large SLM equipment Download PDFInfo
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- CN215279887U CN215279887U CN202121361862.9U CN202121361862U CN215279887U CN 215279887 U CN215279887 U CN 215279887U CN 202121361862 U CN202121361862 U CN 202121361862U CN 215279887 U CN215279887 U CN 215279887U
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Abstract
The utility model discloses a mechanical synchronous displacement system for super large-scale SLM equipment, which comprises a frame, install the shaping jar in the frame and shake the mirror system, can horizontal sideslip install the displacement frame in the frame and drive the translation actuating system of displacement frame intermittent type horizontal sideslip motion, be equipped with the powder plane of scraping of shaping mouth and locate in the frame, shaping jar upper end opening can with take shape mouthful sealed intercommunication, the displacement frame lower extreme with scrape powder plane movive seal contact, displacement frame lower extreme opening is just right with shaping jar upper end opening, the displacement frame sets firmly the scraper and supplies the powder mechanism on at least a lateral wall along its translation direction, be equipped with the air inlet and the induction port that supply inert gas business turn over on the two relative lateral walls of displacement frame lower extreme respectively, shake the mirror system and can be towards the powder transmission laser of displacement frame lower extreme, the utility model discloses accomplish simultaneously harmoniously and supply the powder, shop powder, Scanning and dust exhaust steps, simple structure, easy adjustment and repair, convenient part taking and capability of adapting to the molding of products with various specifications and sizes.
Description
Technical Field
The utility model relates to a 3D laser printing technical field, in particular to mechanical synchronous displacement system for super large-scale SLM equipment.
Background
Melt processing by SLM equipment has been in excess of 20 years; the traditional SLM equipment is structurally characterized in that a forming chamber is fixedly arranged on a rack above, a vibrating mirror system is arranged above the forming chamber, a forming cylinder is arranged below the forming chamber, a powder supply mechanism is arranged outside the forming chamber, a powder scraping plane is formed on the bottom surface of the forming chamber, a scraper is arranged in the forming chamber and is filled with inert gas, during forming, the powder supply mechanism intermittently and quantitatively sends metal powder to the surface of one side of the powder scraping plane, the metal powder is scraped by the scraper and is scraped into an opening of the forming cylinder, the powder forms a layer of powder which is parallel to the powder scraping plane in the forming cylinder, after powder scraping is finished, the vibrating mirror system reflects laser to melt the upper layer of powder in the forming cylinder, after processing is finished, a piston of the forming cylinder descends by one layer height, the powder supply, powder scraping and processing melting steps are repeated, and the workpiece is formed in a circulating manner, the forming chamber is filled with inert gas in the whole process of workpiece forming, dust is discharged outwards through a dust discharge port on the side wall of the forming chamber, after the workpiece is formed, the forming cylinder is transversely moved to be separated from the forming chamber, and then the workpiece is taken.
SUMMERY OF THE UTILITY MODEL
In order to compensate the above deficiency, the utility model provides a mechanical synchronous displacement system for super large-scale SLM equipment, this mechanical synchronous displacement system for super large-scale SLM equipment uses mechanical factor to control as the main part, and the reliability is high, and the interference killing feature is strong, simple structure, easily transfers easily to repair.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: a mechanical synchronous displacement system for ultra-large SLM equipment comprises a rack, a forming cylinder, a displacement frame, a vibrating mirror system and a translation driving system, wherein a powder scraping plane is fixedly arranged on the rack, a forming opening is formed in the powder scraping plane, the forming cylinder is arranged on the rack, an opening at the upper end of the forming cylinder can be in sealed communication with the forming opening in the powder scraping plane, a piston in the forming cylinder can move and move downwards in a sealing mode, the displacement frame can be horizontally and transversely arranged on the rack, the translation driving system drives the displacement frame to intermittently and horizontally move, the lower end of the displacement frame is in movable sealing contact with the powder scraping plane, an opening at the lower end of the displacement frame is right opposite to an opening at the upper end of the forming cylinder, a scraper and a powder supply mechanism are fixedly arranged on at least one side wall of the displacement frame in the translation direction of the displacement frame, the powder supply mechanism can provide forming powder for the inner side of the forming cylinder, and the scraper can scrape the powder in the forming cylinder evenly, the two opposite side walls at the lower end of the displacement frame are respectively provided with an air inlet and an air suction port, inert gas can be sent into the displacement frame through the air inlet, the air suction port can discharge the gas in the displacement frame, the vibrating mirror system is fixedly arranged at the upper end of the displacement frame, and the vibrating mirror system can emit laser to be melted and processed towards the forming cylinder just opposite to the opening at the lower end of the displacement frame.
As a further improvement of the utility model, translation actuating system includes servo motor, speed reducer and lead screw nut mechanism, servo motor and speed reducer fixed mounting are in the frame, and the lead screw axial locking and the circumferencial direction of lead screw nut mechanism can the pivoted install in the frame, the nut and the displacement frame fixed connection of lead screw nut mechanism, and servo motor passes through the lead screw rotation of speed reducer drive lead screw nut mechanism.
As a further improvement of the utility model, still be equipped with the linear guide that the level extends in the frame, be equipped with the slider on the displacement frame, the slider can gliding cover locate on the linear guide.
As a further improvement of the utility model, the displacement frame is all fixed on the double-phase opposite lateral wall along its translation direction to be equipped with the scraper and supply whitewashed mechanism.
As a further improvement of the utility model, the displacement frame translation distance at every turn is less than the size of displacement frame lower extreme opening along its translation direction.
As a further improvement of the utility model, the displacement frame is upper end printing opacity lower extreme open-ended tubbiness structure, and the displacement frame lower extreme passes through seal structure dynamic seal contact with scraping the powder plane.
As a further improvement of the utility model, scrape powder plane fixed mounting in the frame, scrape the powder plane and separate into box structure and lower box structure with the frame, displacement frame and the mirror system that shakes on it, supply powder system and scraper to be located box structure, the jar that takes shape is located box structure down, displacement frame can move to the position department that misplaces completely with the jar that takes shape, goes up to be equipped with on the box structure lateral wall and gets a door, is equipped with the maintenance door on the box structure lateral wall down.
The utility model has the beneficial technical effects that: the utility model abandons the traditional technical route of independent control according to time sequence, and adopts the mode of mechanical synchronous movement, the utility model forms the paradigm of mechanical and electronic integration, the synchronous control of multiple factors, in many cases, the control strategy taking mechanical factors as main bodies is the simplest and reliable, a displacement frame with good rigidity and horizontal movement is arranged on a rack guide rail, a galvanometer system is arranged on the upper layer of the displacement frame, the lower layer is designed with a powder supply system, a powder spreading system and a dust exhaust system, the displacement frame accurately displaces according to the design step length, and the core steps of four SLM technologies of powder supply, powder spreading, scanning and dust exhaust are simultaneously and coordinately completed in one step length, the displacement frame has the accurate stop precision (0.005mm), ultrahigh reliability and anti-jamming capability, the structure is simple, the adjustment is easy, the taking is convenient, the setting and the adjustment can be carried out according to the scanning length of a forming room, the step size of large equipment is large; the small-sized equipment has small step length, and can be suitable for forming products with various specifications and sizes, particularly ultra-large workpieces.
Drawings
FIG. 1 is a schematic diagram of a shaping principle of a prior art SLM device;
FIG. 2 is a front view of the structure principle of the present invention;
FIG. 3 is a schematic view of the powder feeding state of the present invention in translation from left to right;
FIG. 4 is a schematic view of the powder feeding state of the present invention in a horizontal movement from right to left;
FIG. 5 is a schematic view of the first step scanning position during one-layer forming of the present invention;
fig. 6 is a schematic view of a second step scanning position when the utility model is used for forming a layer;
fig. 7 is a schematic view of a third step scanning position when the utility model performs one-layer forming;
fig. 8 is a schematic view of the scanning position of the fourth step length when the one layer is formed.
Detailed Description
Example (b): a mechanical synchronous displacement system for ultra-large SLM equipment comprises a rack 1, a forming cylinder 2, a displacement frame 3, a vibrating mirror system 4 and a translation driving system, wherein a powder scraping plane 5 is fixedly arranged on the rack 1, a forming opening is arranged on the powder scraping plane 5, the forming cylinder 2 is arranged on the rack 1, an opening at the upper end of the forming cylinder 2 can be communicated with the forming opening on the powder scraping plane 5 in a sealing manner, a piston 6 in the forming cylinder 2 can move in a sealing manner and move downwards, the displacement frame 3 can be horizontally and transversely arranged on the rack 1, the translation driving system drives the displacement frame 3 to intermittently and horizontally move, the lower end of the displacement frame 3 is in dynamic sealing contact with the powder scraping plane 5, an opening at the lower end of the displacement frame 3 is just opposite to an opening at the upper end of the forming cylinder 2, a scraper 7 and a powder supply mechanism 8 are fixedly arranged on at least one side wall of the displacement frame 3 along the translation direction, and the powder supply mechanism 8 can supply forming powder to the inner side of the forming cylinder 2, the scraper 7 can be strickleed off with forming 2 interior powder of jar, still be equipped with air inlet 9 and induction port 10 on the two relative lateral walls of displacement frame 3 lower extreme respectively, inside air inlet 9 can send inert gas into displacement frame 3, induction port 10 can be with the inside gas outgoing of displacement frame 3, shake mirror system 4 fixed mounting in displacement frame 3 upper end, shake mirror system 4 can move towards with displacement frame 3 lower extreme opening just to the shaping jar 2 interior powder transmission laser melting processing.
When laser melting processing is carried out, the displacement frame 3 intermittently horizontally moves from left to right on the powder scraping plane 5, then intermittently horizontally moves from right to left, along with the horizontal movement of the displacement frame 3, the powder supply mechanism 8 on the side wall of the displacement frame 3 supplies powder to the forming cylinder 2, after the powder enters a powder stacking area in the forming cylinder 2, the powder is scraped off by moving the scraper 7 along with the displacement frame 3, meanwhile, the powder on the powder scraping plane 5 is scraped off, after the displacement frame 3 intermittently moves for a distance within a step length, the vibrating mirror system 4 at the upper end of the displacement frame 3 carries out laser melting forming on the powder in the forming cylinder 2 opposite to the displacement frame 3, thus, the laser scanning processing is carried out intermittently layer by layer in the forming cylinder 2 along with the reciprocating movement of the displacement frame 3, the air inlet 9 at the lower end of the displacement frame 3 is opposite to the air suction port 10 in matching, at the inside inert gas flow that forms of 3 lower extremes of displacement frame, form abundant inert gas protection, avoid appearing oxidation in the laser melting course of working, realize effective dust exhaust simultaneously, and owing to supply powder mechanism 8 and 7 an organic wholes of scraper to fix on displacement frame 3, realize supplying the powder and spread the powder in step at the in-process that displacement frame 3 removed, need not to carry out solitary drive to supplying the powder and spreading the powder, the utility model discloses guaranteed to supply powder, spread powder, scanning and four system's of dust exhaust synchronous displacements, abandoned the traditional scheme of guaranteeing the synchronism through time sequence control, the utility model discloses simple structure, control are reliable, anti-interference strong, low cost.
The translation driving system comprises a servo motor, a speed reducer and a screw nut mechanism, the servo motor and the speed reducer are fixedly installed on the rack 1, a screw 11 of the screw nut mechanism is axially stopped and can be installed on the rack 1 in a rotating mode in the circumferential direction, a nut 12 of the screw nut mechanism is fixedly connected with the displacement frame 3, and the servo motor drives the screw 11 of the screw nut mechanism to rotate through the speed reducer.
The horizontal transverse movement of the displacement frame 3 is realized by driving a lead screw 11 of a lead screw nut mechanism to rotate through a servo motor, the horizontal transverse movement of the displacement frame 3 can be intermittently controlled by intermittently controlling the rotation of the lead screw 11, the moving direction of the displacement frame 3 is controlled by controlling the rotating direction of the lead screw 11, the driving system can ensure that the displacement frame 3 can accurately move during the horizontal movement, the horizontal transverse movement of the displacement frame 3 is driven by a servo motor in addition to the driving of the horizontal transverse movement of the displacement frame 3, and the horizontal transverse movement of the displacement frame 3 can also be driven by a rack and pinion mechanism driven by the servo motor.
Still be equipped with the linear guide 13 of horizontal extension on the frame 1, be equipped with the slider on the displacement frame 3, the slider can be gliding the cover locate on linear guide 13. The displacement frame 3 is accurately guided by a guide system formed by the linear guide 13 and the slide block, so that the parking accuracy can be ensured.
And two opposite side walls of the displacement frame 3 along the translation direction are respectively and fixedly provided with a scraper 7 and a powder supply mechanism 8. When the displacement frame 3 translates rightwards, the powder supply mechanism 8 and the scraper 7 positioned on the right side of the displacement frame 3 carry out powder paving work; when 3 return strokes of displacement frame translated left, lie in 3 left confession powder mechanisms 8 of displacement frame and scraper 7 and spread powder work, form two-way shop powder, two-way shop powder is efficient, and displacement frame 3 moves about and forms reciprocal processing, does not have the idle stroke, is favorable to high-efficient machine-shaping.
The translation distance of the displacement frame 3 is less than the size of the lower end opening of the displacement frame 3 along the translation direction. The displacement frame 3 moves in a set step length according to the frame translation direction, and because the step length of each translation of the displacement frame 3 is smaller than the size of the opening at the lower end of the displacement frame 3, the displacement frame 3 is overlapped with two adjacent displacements. And the frame-step mechanical rigid displacement mode is easy to set, the step length is convenient to adjust, and the forming precision of the workpiece is ensured by processing the overlapped boundary.
The displacement frame 3 is a barrel-shaped structure with a light-transmitting upper end and an open lower end, and the lower end of the displacement frame 3 is in dynamic sealing contact with the powder scraping plane 5 through a sealing structure. The displacement frame 3 and the powder scraping plane 5 are sealed through a sealing structure, so that the forming chamber is protected by inert gas in the laser melting forming process, and oxygen cannot enter an oxidized workpiece.
Scrape 5 fixed mounting on powder plane in frame 1, scrape powder plane 5 and separate into box structure 14 and lower box structure 15 with frame 1, displacement frame 3 and the mirror system 4 that shakes on it, supply powder system and scraper 7 to be located box structure 14, take shape jar 2 and be located box structure 15 down, displacement frame 3 can move to the position department that misplaces completely with taking shape jar 2, is equipped with on the 14 lateral walls of last box structure and gets a door, is equipped with the maintenance door on the 15 lateral walls of lower box structure. Go up the box to displacement frame 3 and the mirror system 4 that shakes on it, supply powder system and scraper 7 to play the guard action, avoid simultaneously supplying the powder that powder mechanism 8 provided to scatter, lower box structure 15 plays the guard action to taking shape jar 2, the work piece takes shape completely, displacement frame 3 moves to one side, be in with taking shape jar 2 complete dislocation state after, the piston 6 of taking shape jar 2 rises, the work piece just is in last box, the work piece can get the piece through getting a door, realize that the normal position gets the piece, it is convenient to get the piece, take shape jar 2 and go wrong, when needing the maintenance, only need open the maintenance door of box structure 15 down and can get into 1 insidely and maintain taking shape jar 2, easy maintenance.
Claims (7)
1. A mechanical synchronous displacement system for a very large SLM device, characterized by: comprises a frame (1), a forming cylinder (2), a displacement frame (3), a vibrating mirror system (4) and a translation driving system, wherein a powder scraping plane (5) is fixedly arranged on the frame, a forming opening is arranged on the powder scraping plane, the forming cylinder is arranged on the frame, an opening at the upper end of the forming cylinder can be communicated with the forming opening on the powder scraping plane in a sealing way, a piston (6) in the forming cylinder can move and move downwards in a sealing way, the displacement frame can be horizontally and transversely arranged on the frame, the translation driving system drives the displacement frame to move intermittently and horizontally, the lower end of the displacement frame is in movable sealing contact with the powder scraping plane, an opening at the lower end of the displacement frame is just opposite to an opening at the upper end of the forming cylinder, a scraper (7) and a powder supply mechanism (8) are fixedly arranged on at least one side wall of the displacement frame along the translation direction, the powder supply mechanism can provide forming powder for the inner side of the forming cylinder, and the scraper can scrape the powder in the forming cylinder evenly, still be equipped with air inlet (9) and induction port (10) on the two relative lateral walls of displacement frame lower extreme respectively, the air inlet can send inert gas into the displacement frame inside, and the induction port can be with the inside gaseous exhaust of displacement frame, shakes mirror system fixed mounting in displacement frame upper end, shakes the mirror system and can be towards and carry out melting process with the just shaping jar interior powder emission laser that displacement frame lower extreme opening is right.
2. The mechanically synchronized displacement system for a very large SLM device as claimed in claim 1, characterized by: the translation driving system comprises a servo motor, a speed reducer and a screw nut mechanism, wherein the servo motor and the speed reducer are fixedly installed on the rack, a screw (11) of the screw nut mechanism is axially stopped and can be installed on the rack in a rotating mode in the circumferential direction, a nut (12) of the screw nut mechanism is fixedly connected with the displacement frame, and the servo motor drives the screw of the screw nut mechanism to rotate through the speed reducer.
3. A mechanically synchronized displacement system for a very large SLM device, as claimed in claim 1 or 2, characterized by: still be equipped with the linear guide (13) that the level extends in the frame, be equipped with the slider on the displacement frame, the slider can gliding cover locate on the linear guide.
4. The mechanically synchronized displacement system for a very large SLM device as claimed in claim 2, characterized by: and scrapers and powder supply mechanisms are fixedly arranged on two opposite side walls of the displacement frame along the translation direction of the displacement frame.
5. The mechanically synchronized displacement system for a very large SLM device as claimed in claim 1, characterized by: the translation distance of the displacement frame is less than the size of the opening at the lower end of the displacement frame along the translation direction.
6. The mechanically synchronized displacement system for a very large SLM device as claimed in claim 1, characterized by: the displacement frame is a barrel-shaped structure with a light-transmitting upper end and an open lower end, and the lower end of the displacement frame is in dynamic sealing contact with the powder scraping plane through a sealing structure.
7. The mechanically synchronized displacement system for a very large SLM device as claimed in claim 1, characterized by: scrape powder plane fixed mounting in the frame, scrape the powder plane and separate into box structure (14) and lower box structure (15) with the frame, displacement frame and last mirror system that shakes, confession powder system and scraper are located box structure, and the jar that takes shape is located box structure down, and displacement frame can move to the position department that misplaces completely with the jar that takes shape, goes up to be equipped with on the box structure lateral wall and gets a door, is equipped with the maintenance door on the box structure lateral wall down.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121361862.9U CN215279887U (en) | 2021-06-18 | 2021-06-18 | Mechanical synchronous displacement system for ultra-large SLM equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121361862.9U CN215279887U (en) | 2021-06-18 | 2021-06-18 | Mechanical synchronous displacement system for ultra-large SLM equipment |
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| CN215279887U true CN215279887U (en) | 2021-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275602A (en) * | 2021-06-18 | 2021-08-20 | 江苏永年激光成形技术有限公司 | Mechanical synchronous displacement system for ultra-large SLM equipment |
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- 2021-06-18 CN CN202121361862.9U patent/CN215279887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275602A (en) * | 2021-06-18 | 2021-08-20 | 江苏永年激光成形技术有限公司 | Mechanical synchronous displacement system for ultra-large SLM equipment |
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