Additive manufacturing method and apparatus

Abstract

The invention relates to an additive manufacturing method and device. The method comprises the steps that a track pattern is obtained; manufacturing parameters are obtained according to the track pattern; constructing a part model according to the manufacturing parameters; according to the manufacturing parameters, machining parameters are obtained; and according to the machining parameters, machining is conducted on the part model. According to the embodiment of the invention, the part model can be automatically constructed, the machining parameters can be calculated, the automation level during additive manufacturing can be improved, and the error rate can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of additive manufacturing, and particularly to an additive manufacturing method and apparatus. Background Art

[0002] Selective laser melting technology is a branch of additive manufacturing and has been widely used in the fields of aerospace, automotive, medical, and molds.

[0003] In traditional methods, when using selective laser melting technology, system experiments are required to determine the optimal parameters such as laser power and scanning speed. There are two types of experiments for selective laser melting technology: single-track experiments and multi-track experiments. Whether it is a single-track experiment or a multi-track experiment, it is usually necessary to manually set and construct multiple parameter blocks in the slicing software, and a large number of processing parameters also need to be manually set and matched. This process is not only cumbersome and error-prone, but also greatly increases the workload and the possibility of errors.

[0004] In the prior art, there is no method with high automation and low error rate. Summary of the Invention

[0005] To solve the above technical problems or at least partially solve the above technical problems, the present invention provides an additive manufacturing method and apparatus.

[0006] In a first aspect, the present invention provides an additive manufacturing method, the method comprising: Obtaining a track pattern; Obtaining manufacturing parameters according to the track pattern; Constructing a part model according to the manufacturing parameters; Obtaining processing parameters according to the manufacturing parameters; Performing processing on the part model according to the processing parameters.

[0007] Optionally, the manufacturing parameters include a first scanning order and a second scanning order, the first scanning order being the scanning order of multiple scanning tracks, and the second scanning order being the scanning order of each scanning track; Obtaining processing parameters according to the manufacturing parameters includes: Obtaining the first scanning track according to the first scanning order, Establishing a coordinate system with an end point of the first scanning track as the origin, Obtaining the key point coordinates of each scanning track, Obtaining the starting point coordinates and the closing point coordinates of each according to the key point coordinates of each scanning track and the second scanning order; Performing processing on the part model according to the processing parameters includes: Between the starting point coordinates and the ending point coordinates of the current scanning track, scan according to the scanning speed and scanning power of the current scanning track. Do not scan between moving from the ending point coordinates of the current scanning track to the starting point coordinates of the next scanning track.

[0008] Optionally, the manufacturing parameters further include: initial scanning speed, speed step, number of scanning tracks, initial scanning power, and power step. Before machining on the part model according to the machining parameters, the method further includes: Obtain the scanning speed of each scanning track according to the initial scanning speed, the speed step, and the number of scanning tracks. Obtain the scanning power of each scanning track according to the initial scanning power, the power step, and the number of scanning tracks.

[0009] Optionally, if the track pattern is a straight scanning line, then obtaining the manufacturing parameters according to the track pattern includes: Obtain the number of straight tracks, the straight track interval, and the straight track length. Constructing the part model according to the manufacturing parameters includes: Construct a first part model according to the number of straight tracks, the straight track interval, and the straight track length.

[0010] Optionally, constructing the first part model according to the number of straight tracks, the straight track interval, and the straight track length includes: Obtain a first width according to the number of straight tracks and the straight track interval. Obtain a first length according to the straight track length. Construct the first part model according to the first width and the first length. The first part model is a cuboid with a width of the first width, a length of the first length, and a height of a preset height. Wherein, obtaining the first width according to the number of straight tracks and the straight track interval is in the following manner: is the first width, is the number of straight tracks, is the straight track interval, is the first redundancy.

[0011] Optionally, the key point coordinates of the scanning track include: the first endpoint coordinates of the straight track, and the second endpoint coordinates of the straight track, where the X-axis coordinate values or the Y-axis coordinate values of the first endpoint coordinates of different straight tracks are the same; The obtaining of the starting point coordinates and the closing point coordinates of each light point according to the key point coordinates of each scanning track and the second scanning order includes: Taking the first endpoint coordinates of the current straight track as the starting point coordinates of the current straight track, and taking the second endpoint coordinates of the current straight track as the closing point coordinates of the current straight track; Taking the first endpoint coordinates of the next straight track as the starting point coordinates of the next straight track, or Taking the second endpoint coordinates of the next straight track as the starting point coordinates of the next straight track; Taking the other endpoint coordinates of the non-starting point coordinates of the next straight track as the closing point coordinates of the next straight track.

[0012] Optionally, if the track style is a spiral scanning line, the obtaining of the manufacturing parameters according to the track style includes: Obtaining the number of spiral tracks, the center offset amount, and the offset gap; Constructing a part model according to the manufacturing parameters includes: Constructing a second part model according to the number of spiral tracks, the center offset amount, and the offset gap.

[0013] Optionally, the constructing of the second part model according to the number of spiral tracks, the center offset amount, and the offset gap includes: Obtaining a second length according to the number of spiral tracks, the center offset amount, and the offset gap; Constructing the second part model according to the second length; The second part model is: a cuboid with a width of the second length, a length of the second length, and a height of a preset height; Among them, the obtaining of the second length according to the number of spiral tracks, the center offset amount, and the offset gap is carried out in the following manner: is the second length, is the number of spiral tracks, is the offset gap, is the center offset amount, is the second redundancy amount.

[0014] Optionally, the obtaining of the key point coordinates of each scanning track includes: Obtain the starting point coordinates of each spiral orbit, the first turning point coordinates of the spiral orbit, the second turning point coordinates of the spiral orbit, the third turning point coordinates of the spiral orbit, and the ending point coordinates of the spiral orbit; The obtaining of each starting light point coordinate and each closing light point coordinate according to the key point coordinates of each scanning orbit and the second scanning order includes: Take the starting point coordinates of the current spiral orbit as the starting light point coordinates of the current spiral orbit, and take the ending point coordinates of the current spiral orbit as the closing light point coordinates of the current spiral orbit; The scanning from the starting light point coordinates of the current scanning orbit to the closing light point coordinates of the current scanning orbit according to the scanning speed and scanning power of the current scanning orbit includes: According to the second scanning order, obtain the scanning path from the starting light point coordinates of the current spiral orbit to the closing light point coordinates of the current spiral orbit, and the scanning path includes a clockwise path and a counterclockwise path; According to the scanning path, scan from the starting light point coordinates of the current spiral orbit, through multiple turning point coordinates of the current spiral orbit to the closing light point coordinates of the current spiral orbit, at the scanning power of the current scanning orbit.

[0015] In a second aspect, an additive manufacturing device is provided, and the device includes: An orbit style obtaining unit for obtaining the orbit style; A manufacturing parameter obtaining unit for obtaining manufacturing parameters according to the orbit style; A model unit for constructing a part model according to the manufacturing parameters; A processing parameter obtaining unit for obtaining processing parameters according to the manufacturing parameters; A processing unit for processing on the part model according to the processing parameters.

[0016] The present invention relates to an additive manufacturing method and device. The method includes: obtaining an orbit style; obtaining manufacturing parameters according to the orbit style; constructing a part model according to the manufacturing parameters; obtaining processing parameters according to the manufacturing parameters; and processing on the part model according to the processing parameters. Embodiments of the present invention can automatically construct a part model and calculate processing parameters, which can improve the automation level during additive manufacturing and reduce the error rate. Description of the Drawings

[0017] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 The following is an application environment diagram of the additive manufacturing method according to an embodiment of the present invention; Figure 2 The following is a schematic flowchart of the additive manufacturing method according to an embodiment of the present invention; Figure 3 The following is a schematic diagram of a straight scanning line according to an embodiment of the present invention; Figure 4 The following is a schematic diagram of a straight scanning line according to an embodiment of the present invention; Figure 5 The following is a schematic diagram of a straight scanning line according to an embodiment of the present invention; Figure 6 The following is a schematic diagram of a loop scanning line according to an embodiment of the present invention; Figure 7 The following is a structural block diagram of an additive manufacturing device according to an embodiment of the present invention. Detailed implementation manners

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0021] Figure 1 The following is an application environment diagram of the additive manufacturing method in an embodiment. Refer to Figure 1 , this additive manufacturing method is applied to an additive manufacturing system. This additive manufacturing method includes a terminal 110 (and / or a server 120). The terminal 110 and the server 120 are connected through a network. The terminal 110 can specifically be a desktop terminal or a mobile terminal, and the mobile terminal can specifically be at least one of a mobile phone, a tablet computer, a laptop computer, etc. The server 120 can be implemented by an independent server or a server cluster composed of multiple servers. The terminal 110 and / or the server 120 can be set on an additive manufacturing device or an additive manufacturing system.

[0022] An additive manufacturing of the present invention is applied to the terminal 110 and / or the server 120.

[0023] Figure 2The flowchart of the additive manufacturing method according to an embodiment of the present invention is shown as follows. Figure 1 As shown, the method includes: Step 210, obtaining a track pattern; Step 220, obtaining manufacturing parameters according to the track pattern; Step 230, constructing a part model according to the manufacturing parameters; Step 240, obtaining processing parameters according to the manufacturing parameters; Step 250, performing processing on the part model according to the processing parameters.

[0024] In an embodiment of the present invention, the track pattern may include: a straight scan line and a circular scan line, and may also include other irregular scan lines.

[0025] The method according to an embodiment of the present invention can automatically construct a part model, calculate processing parameters, improve the automation level during additive manufacturing, and reduce the error rate.

[0026] In an embodiment of the present invention, the manufacturing parameters include a first scan order and a second scan order. The first scan order is the scan order of multiple scan tracks, and the second scan order is the scan order of each scan track; Obtaining processing parameters according to the manufacturing parameters includes: Obtaining the first scan track according to the first scan order, Establishing a coordinate system with an endpoint of the first scan track as the origin, Obtaining the key point coordinates of each scan track, Obtaining the starting point coordinates and the ending point coordinates of each scan track according to the key point coordinates of each scan track and the second scan order; Performing processing on the part model according to the processing parameters includes: Scanning from the starting point coordinates of the current scan track to the ending point coordinates of the current scan track according to the scanning speed and the scanning power of the current scan track, Not scanning when moving from the ending point coordinates of the current scan track to the starting point coordinates of the next scan track.

[0027] In an embodiment of the present invention, the first scan order is the scan order of multiple scan tracks. For example, for multiple straight scan lines, it can be from left to right or from top to bottom; if it is a circular scan line, it can be from the inside to the outside or from the outside to the inside; for other shaped scan lines, refer to the above embodiments and will not be elaborated here.

[0028] The second scanning order is the scanning order of each scanning track. For a straight scanning line, if it is a vertical scanning line, it can be from top to bottom or from bottom to top; if it is a meandering scanning line or a circular scanning line, it can be clockwise or counterclockwise, etc.

[0029] In the embodiments of the present invention, in order to facilitate scanning, a coordinate system is established. The coordinate system can be a plane right-handed coordinate system, and the coordinate axes are the X-axis and the Y-axis. The coordinate system can be referred to Figure 3 as shown.

[0030] In the embodiments of the present invention, the manufacturing parameters further include: initial scanning speed, speed step, number of scanning tracks, initial scanning power, and power step. Before machining on the part model according to the machining parameters, the method further includes: Obtaining the scanning speed of each scanning track according to the initial scanning speed, the speed step, and the number of scanning tracks; Obtaining the scanning power of each scanning track according to the initial scanning power, the power step, and the number of scanning tracks.

[0031] The scanning speeds and scanning powers of different tracks can be different. In the embodiments of the present invention, the scanning speed and scanning power of each track can be automatically obtained according to the settings.

[0032] Common track styles are straight scanning lines and meandering scanning lines. The two types of scanning lines will be described below respectively.

[0033] In the embodiments of the present invention, if the track style is a straight scanning line, then obtaining the manufacturing parameters according to the track style includes: Obtaining the number of straight tracks, the straight track interval, and the straight track length; Constructing a part model according to the manufacturing parameters includes: Constructing a first part model according to the number of straight tracks, the straight track interval, and the straight track length.

[0034] In the embodiments of the present invention, constructing the first part model according to the number of straight tracks, the straight track interval, and the straight track length includes: Obtaining a first width according to the number of straight tracks and the straight track interval; Obtaining a first length according to the straight track length; Constructing the first part model according to the first width and the first length; The first part model is a cuboid with a width of the first width, a length of the first length, and a height of a preset height; Among them, the first width is obtained according to the number of the linear tracks and the interval between the linear tracks in the following manner: is the first width, is the number of linear tracks, is the interval between the linear tracks, is the first redundancy.

[0035] In an embodiment of the present invention, the key point coordinates of the scanning track include: the first endpoint coordinates of the linear track and the second endpoint coordinates of the linear track, wherein the X-axis coordinate values or the Y-axis coordinate values of the first endpoint coordinates of different linear tracks are the same; The obtaining of each starting point coordinate and each closing point coordinate according to the key point coordinates of each scanning track and the second scanning order includes: Taking the first endpoint coordinates of the current linear track as the starting point coordinates of the current linear track, and taking the second endpoint coordinates of the current linear track as the closing point coordinates of the current linear track; Taking the first endpoint coordinates of the next linear track as the starting point coordinates of the next linear track, or Taking the second endpoint coordinates of the next linear track as the starting point coordinates of the next linear track; Taking the other endpoint coordinates of the non-starting point coordinates of the next linear track as the closing point coordinates of the next linear track.

[0036] Figure 3 The schematic diagram of the linear scanning line according to the embodiment of the present invention is shown as Figure 3 shown, and the coordinate system is the X-Y coordinate system.

[0037] Figure 3 In the shown embodiment, the first scanning order is from left to right, and the second scanning order is from top to bottom. Figure 3 The dashed outer frame 310 in can be regarded as the plane boundary of the constructed part model.

[0038] Figure 3 In, the first endpoints of the linear tracks are A1, A2, A3, and the second endpoints are B1, B2, B3. Since the second scanning order is from top to bottom, for each linear track, it is from A to B. In the figure, the overall scanning order is represented by a dashed line with an arrow, and it can be regarded as the moving path of the scanning head. Among them, the movement between A1 and B1 can be a slant line as Figure 3 shown, or a broken line, which will not be elaborated here.

[0039] During scanning, scan from the starting point A1 to the closing point B1, then stop scanning from the closing point B1 to the next starting point A2, and scan from A2 to B2.

[0040] Figure 4 The following is a schematic diagram of a straight scanning line according to an embodiment of the present invention. As Figure 4 shown, the coordinate system is an X-Y coordinate system. Figure 4 In the shown embodiment, the first scanning order is from left to right, and the second scanning order is scanning nearby.

[0041] Figure 4 In, the first endpoints of the straight tracks are A1, A2, A3, and the second endpoints are B1, B2, B3. The second scanning order is from top to bottom. Therefore, for each straight track, it is from A to B. In the figure, the overall scanning order is shown in the form of a dotted line with an arrow.

[0042] Taking Figure 4 as an example, scanning nearby means moving from the closed light point B1 to B2. At this time, B2 is used as the starting light point, and A2 is used as the closed light point. Similarly, A3 is the starting light point and B3 is the closed light point.

[0043] Figure 5 The following is a schematic diagram of a straight scanning line according to an embodiment of the present invention. Figure 5 In, the first scanning order can be from top to bottom or from bottom to top.

[0044] In an embodiment of the present invention, if the track pattern is a loop scanning line, then obtaining the manufacturing parameters according to the track pattern includes: Obtaining the number of loop tracks, the center offset amount, and the offset gap; Constructing a part model according to the manufacturing parameters includes: Constructing a second part model according to the number of loop tracks, the center offset amount, and the offset gap.

[0045] In an embodiment of the present invention, constructing the second part model according to the number of loop tracks, the center offset amount, and the offset gap includes: Obtaining a second length according to the number of loop tracks, the center offset amount, and the offset gap; Constructing the second part model according to the second length; The second part model is a cuboid with a width of the second length, a length of the second length, and a height of a preset height; Wherein, obtaining the second length according to the number of loop tracks, the center offset amount, and the offset gap is carried out in the following manner: is the second length, is the number of loop tracks, is the offset gap, is the center offset amount, is the second redundancy amount.

[0046] In the embodiments of the present invention, the obtaining of the key point coordinates of each scanning track includes: Obtaining the starting point coordinates of each circular track, the first turning point coordinates of the circular track, the second turning point coordinates of the circular track, the third turning point coordinates of the circular track, and the ending point coordinates of the circular track; The obtaining of each starting light point coordinate and each closing light point coordinate according to the key point coordinates of each scanning track and the second scanning order includes: Taking the starting point coordinates of the current circular track as the starting light point coordinates of the current circular track, and taking the ending point coordinates of the current circular track as the closing light point coordinates of the current circular track; The scanning from the starting light point coordinates of the current scanning track to the closing light point coordinates of the current scanning track according to the scanning speed and scanning power of the current scanning track includes: According to the second scanning order, obtaining the scanning path from the starting light point coordinates of the current circular track to the closing light point coordinates of the current circular track, where the scanning path includes a clockwise path and a counterclockwise path; According to the scanning path, scanning from the starting light point coordinates of the current circular track, passing through multiple turning point coordinates of the current circular track to the closing light point coordinates of the current circular track at the scanning power of the current scanning track.

[0047] Figure 6 Shown is a schematic diagram of the circular scanning line in the embodiments of the present invention, as Figure 6 shown, the first scanning order is from the outside to the inside, and the second scanning order is clockwise.

[0048] Figure 6 In, a circular track includes a starting point A, turning points B, C, D, and an ending point E, where the starting point A and the ending point E can coincide.

[0049] According to the first scanning order and the second scanning order, Figure 6 in, scanning is performed from the starting light point A1 to the turning points B1, C1, D1, and the closing light point E1. No scanning is performed between the closing light point E1 and the next starting light point A2.

[0050] In the embodiments of the present invention, the scanning speeds and scanning powers of different scanning lines can be equal or unequal. For example Figure 3 in, the scanning power of A1B1 is 100W and the speed is 800 mm / s, and the scanning power of A2B2 is 150W and the speed is 900 mm / s.

[0051] The method of the embodiment of the present invention can automatically calculate the scanning power and scanning speed, and can also plan the scanning path, starting point and ending point, which can improve the automation level during additive manufacturing and reduce the error rate.

[0052] As Figure 7 shown, the present invention also provides an additive manufacturing device, which includes: An orbit pattern acquisition unit 710 for acquiring an orbit pattern; A manufacturing parameter acquisition unit 720 for acquiring manufacturing parameters according to the orbit pattern; A model unit 730 for constructing a part model according to the manufacturing parameters; A processing parameter acquisition unit 740 for acquiring processing parameters according to the manufacturing parameters; A processing unit 750 for processing on the part model according to the processing parameters.

[0053] In the embodiment of the present invention, the manufacturing parameters include a first scanning order and a second scanning order. The first scanning order is the scanning order of multiple scanning orbits, and the second scanning order is the scanning order of each scanning orbit; The processing parameter acquisition unit 740 is further configured to: Acquire the first scanning orbit according to the first scanning order, Establish a coordinate system with an endpoint of the first scanning orbit as the origin, Acquire the key point coordinates of each scanning orbit, Acquire the starting point coordinates and ending point coordinates of each according to the key point coordinates of each scanning orbit and the second scanning order; Processing on the part model according to the processing parameters includes: Scanning from the starting point coordinates of the current scanning orbit to the ending point coordinates of the current scanning orbit according to the scanning speed and scanning power of the current scanning orbit, Do not scan when moving from the ending point coordinates of the current scanning orbit to the starting point of the next scanning orbit.

[0054] In the embodiment of the present invention, the manufacturing parameters further include: initial scanning speed, speed step, number of scanning orbits, initial scanning power, and power step, The processing parameter acquisition unit 740 is further configured to: Acquire the scanning speed of each scanning orbit according to the initial scanning speed, the speed step, and the number of scanning orbits; Acquire the scanning power of each scanning orbit according to the initial scanning power, the power step, and the number of scanning orbits.

[0055] In an embodiment of the present invention, if the track pattern is a straight scan line, the manufacturing parameter acquisition unit 720 is further configured to: Obtain the number of straight tracks, the straight track interval, and the straight track length; The model unit 730 is further configured to: Construct a first part model according to the number of straight tracks, the straight track interval, and the straight track length.

[0056] In an embodiment of the present invention, the model unit 730 is further configured to: Obtain a first width according to the number of straight tracks and the straight track interval; Obtain a first length according to the straight track length; Construct the first part model according to the first width and the first length; The first part model is a cuboid with a width of the first width, a length of the first length, and a height of a preset height; Wherein, obtaining the first width according to the number of straight tracks and the straight track interval is performed in the following manner: is the first width, is the number of straight tracks, is the straight track interval, is the first redundancy.

[0057] In an embodiment of the present invention, the key point coordinates of the scan track include: the first endpoint coordinates of the straight track and the second endpoint coordinates of the straight track, wherein the X-axis coordinate values or the Y-axis coordinate values of the first endpoint coordinates of different straight tracks are the same; The machining parameter acquisition unit 740 is further configured to: Use the first endpoint coordinates of the current straight track as the starting point coordinates of the current straight track, and use the second endpoint coordinates of the current straight track as the closing point coordinates of the current straight track; Use the first endpoint coordinates of the next straight track as the starting point coordinates of the next straight track, or Use the second endpoint coordinates of the next straight track as the starting point coordinates of the next straight track; Use the other endpoint coordinates of the non-starting point coordinates of the next straight track as the closing point coordinates of the next straight track.

[0058] In an embodiment of the present invention, if the track pattern is a loop scan line, the manufacturing parameter acquisition unit 720 is further configured to: Obtain the number of loop tracks, the center offset amount, and the offset gap; The model unit 730 is further configured to: Construct a second part model according to the number of the spiral tracks, the center offset amount, and the offset gap.

[0059] In an embodiment of the present invention, the model unit 730 is further configured to: Obtain a second length according to the number of the spiral tracks, the center offset amount, and the offset gap; Construct the second part model according to the second length; The second part model is a cuboid with a width of the second length, a length of the second length, and a height of a preset height; Wherein, obtaining the second length according to the number of the spiral tracks, the center offset amount, and the offset gap is performed in the following manner: is the second length, is the number of the spiral tracks, is the offset gap, is the center offset amount, is the second redundancy amount.

[0060] In an embodiment of the present invention, the processing parameter acquisition unit 740 is further configured to: Obtain the starting point coordinates, the first turning point coordinates, the second turning point coordinates, the third turning point coordinates, and the ending point coordinates of each spiral track; Use the starting point coordinates of the current spiral track as the starting light point coordinates of the current spiral track, and use the ending point coordinates of the current spiral track as the closing light point coordinates of the current spiral track; Scanning between the starting light point coordinates and the closing light point coordinates of the current scanning track according to the scanning speed and the scanning power of the current scanning track includes: Obtain a scanning path between the starting light point coordinates and the closing light point coordinates of the current spiral track according to the second scanning order, where the scanning path includes a clockwise path and a counterclockwise path; According to the scanning path, scan from the starting light point coordinates of the current spiral track, through the turning point coordinates of multiple current spiral tracks to the closing light point coordinates of the current spiral track at the scanning power of the current scanning track.

[0061] The embodiment of the present invention can automatically calculate the scanning power and the scanning speed, and can also plan the scanning path, the starting light point, and the closing light point, which can improve the automation level during additive manufacturing and reduce the error rate.

[0062] Figure 2It is a schematic flowchart of an additive manufacturing method in an embodiment. It should be understood that although Figure 2 each step in the flowchart is shown in sequence according to the indication of the arrow, these steps are not necessarily executed in the sequence indicated by the arrow. Unless there is a clear indication in this article, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 2 at least a part of the steps in

[0063] may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0064] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0065] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. An additive manufacturing method, characterized in that: The method comprises: Get the track style; acquiring manufacturing parameters according to the track pattern; constructing a part model according to the manufacturing parameters; According to the manufacturing parameters, obtaining processing parameters; Processing is performed on the part model according to the processing parameters.

2. The method according to claim 1, characterized in that The manufacturing parameters include a first scanning order and a second scanning order, the first scanning order is a scanning order of a plurality of scanning tracks, and the second scanning order is a scanning order of each scanning track; According to the manufacturing parameters, the processing parameters are obtained, including: According to the first scanning sequence, the first scanning track is obtained, A coordinate system is established with one end point of the first scanning track as the origin. Get the key point coordinates of each scanning track, According to the key point coordinates of each scanning track and the second scanning order, obtaining each starting point coordinate and each closing point coordinate; Processing is performed on the part model according to the processing parameters, including: From the coordinates of the starting point of the current scanning track to the coordinates of the closing point of the current scanning track, scan according to the scanning speed and scanning power of the current scanning track. No scanning is performed between the coordinates of the closing light point of the current scanning track and the starting light point of the next scanning track.

3. The method according to claim 2, characterized in that The manufacturing parameters also include: initial scanning speed, speed step, number of scanning tracks, initial scanning power and power step, Before performing processing on the part model according to the processing parameters, the method further includes: Acquire a scanning speed of each scanning track according to the initial scanning speed, the speed step and the number of scanning tracks; The scanning power of each scanning track is acquired according to the initial scanning power, the power step length and the number of scanning tracks.

4. The method according to claim 3, characterized in that: If the track pattern is a straight scanning line, obtaining manufacturing parameters according to the track pattern includes: Obtain the number of straight tracks, the interval between straight tracks and the length of straight tracks; Constructing a part model according to the manufacturing parameters includes: A first part model is constructed according to the number of linear tracks, the linear track intervals and the linear track lengths.

5. The method according to claim 4, characterized in that The step of constructing a first part model according to the number of linear tracks, the linear track intervals and the linear track lengths comprises: Acquire a first width according to the number of the straight tracks and the interval between the straight tracks; According to the length of the straight track, obtaining a first length; constructing the first part model according to the first width and the first length; The first part model is a cuboid with a width equal to the first width, a length equal to the first length, and a height equal to a preset height; The first width is obtained according to the number of the linear tracks and the interval between the linear tracks in the following manner: is the first width, is the number of straight tracks, is the straight track spacing, is the first redundancy.

6. The method according to claim 5, characterized in that The key point coordinates of the scanning track include: the first endpoint coordinates of the linear track, the second endpoint coordinates of the linear track, wherein the first endpoint coordinates of different linear tracks have the same X-axis coordinate value or the same Y-axis coordinate value; The step of acquiring each light-starting point coordinate and each light-closing point coordinate according to the key point coordinates of each scanning track and the second scanning sequence includes: The coordinates of the first endpoint of the current linear track are used as the coordinates of the starting point of the current linear track, and the coordinates of the second endpoint of the current linear track are used as the coordinates of the closing point of the current linear track; The coordinates of the first endpoint of the next linear track are used as the coordinates of the starting point of the next linear track, or Using the coordinates of the second end point of the next linear track as the coordinates of the starting point of the next linear track; The coordinates of the other end point of the non-starting point of the next linear track are used as the coordinates of the closing point of the next linear track.

7. The method according to claim 3, characterized in that If the track pattern is a zigzag scanning line, then obtaining manufacturing parameters according to the track pattern includes: Get the number of circular tracks, center offset and offset gap; Constructing a part model according to the manufacturing parameters includes: A second part model is constructed according to the number of the circular tracks, the center offset and the offset gap.

8. The method according to claim 7, characterized in that The second part model is constructed according to the number of the circular tracks, the center offset and the offset gap, including: Obtaining a second length according to the number of the circular tracks, the center offset, and the offset gap; constructing the second part model according to the second length; The second part model is a cuboid with a width equal to the second length, a length equal to the second length, and a height equal to a preset height; Wherein, the second length is obtained according to the number of the circular tracks, the center offset and the offset gap in the following manner: is the second length, is the number of circular tracks, is the offset gap, is the center offset, is the second redundancy.

9. The method according to claim 8, characterized in that The step of obtaining the key point coordinates of each scanning track includes: Obtain the coordinates of the starting point of each circular track, the coordinates of the first turning point of the circular track, the coordinates of the second turning point of the circular track, the coordinates of the third turning point of the circular track and the coordinates of the end point of the circular track; The step of acquiring each light-starting point coordinate and each light-closing point coordinate according to the key point coordinates of each scanning track and the second scanning sequence includes: The coordinates of the starting point of the current circular track are used as the coordinates of the starting light point of the current circular track, and the coordinates of the end point of the current circular track are used as the coordinates of the closing light point of the current circular track; The scanning from the starting light point coordinate of the current scanning track to the closing light point coordinate of the current scanning track according to the scanning speed and the scanning power of the current scanning track includes: According to the second scanning sequence, a scanning path from the coordinates of the starting light point of the current circular track to the coordinates of the closing light point of the current circular track is acquired, wherein the scanning path includes a clockwise path and a counterclockwise path; According to the scanning path, scanning is performed from the starting light point coordinate of the current circular track, through multiple turning point coordinates of the current circular track to the closing light point coordinate of the current circular track according to the scanning power of the current scanning track.

10. An additive manufacturing device, characterized in that: The device comprises: A track style acquisition unit, used to acquire the track style; A manufacturing parameter acquisition unit, used to acquire manufacturing parameters according to the track pattern; A model unit, used for constructing a part model according to the manufacturing parameters; A processing parameter acquisition unit, used to acquire processing parameters according to the manufacturing parameters; A processing unit is used to perform processing on the part model according to the processing parameters.

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