CN107336442A - Method for analyzing output article by using lamellar lines - Google Patents

Abstract

The invention discloses a method for analyzing output articles by using a striation line, which comprises the following steps: a digital model is defined with at least one digital characteristic part, a computer system divides the digital model into a plurality of digital stacking layers in a horizontal mode by executing the analysis program, and digital stacking lines are respectively defined between the digital stacking layers on the surface of the digital model. Selecting a stroke of data with the most digital layer lines of the at least one digital characteristic part, and obtaining the angle value of the digital model relative to the three axes from the stroke of data to define a forming angle. After the digital model is rotated to the forming angle from the original angle of the three-axis coordinate, the digital model is printed by an article forming device to form a solid forming object.

Description

Method of Analyzing Output Items Using Layer Grain Lines

technical field

The present invention relates to 3D printing, in particular to a method for analyzing output objects by using layer lines.

Background technique

The existing 3D printing molding technology is a layer-by-layer printing technology. When a solid 3D molding is to be manufactured, a digital model is input into a computer. The digital model is grid data, which is layer by layer through a 3D printer. In the method of stack printing, a plurality of stacked layers are stacked and formed to produce the solid 3D molded object.

In the aforementioned 3D printing molding technology, a layer of lines is formed between each stacked layer on the surface of the solid 3D molding, and the solid 3D molding has at least one characteristic part, and the at least one characteristic part is to be printed out in a particularly complete manner. If the number of layers of the stacked layers printed by the at least one characteristic part is insufficient, the shape of the at least one characteristic part cannot be clearly presented. Therefore, after the at least one characteristic part is 3D printed, it must be The present invention can solve the above-mentioned problems by relying on manual processing and trimming so as to clearly present the shape of the at least one characteristic portion.

Contents of the invention

The main purpose of the present invention is to provide a method for analyzing the output product by using layer lines, so that at least one digital feature part of the digital model can obtain the maximum number of digital layer lines.

The reason is that, according to the method provided by the present invention for analyzing the output articles by using layer lines, it includes the following steps: defining digital layer lines: inputting a digital model into a computer system, the digital model defines at least one The digital feature section, the computer system divides the digital model into a plurality of horizontal digital stacking layers by executing an analysis program, and defines a digital layer pattern between the digital stacking layers on the surface of the digital model Wire. Analyzing the digital layer lines: take any point in the digital model as a rotation point, center the digital model at the rotation point, and rotate with a predetermined angle relative to a three-axis coordinate, record the digital model relative to the three-axis All the rotation angle values of the shaft and the number of digital layer lines of the at least one digital feature portion under each angle value will be defined as a plurality of pieces of data. Determine the printing angle: compare the number of digital layer lines of the at least one digital feature part and obtain a piece of data with the largest number of digital layer lines, select this piece of data to obtain the at least one digital model relative to the three axes The angle value is defined as a forming angle. Printing the article: after the digital model is rotated from the original angle of the three-axis coordinates to the forming angle, the digital model is made into a solid molded object by an article forming device.

Thereby, the present invention can increase the number of digital layer lines of at least one digital characteristic part of the digital model, so that the shape of the at least one digital characteristic part can be clearly displayed, and the at least one digital characteristic part can be printed into the entity After molding, it can avoid or greatly reduce manual processing and trimming.

Description of drawings

Fig. 1 is a flowchart of the steps of the first preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of the digital model of the first preferred embodiment of the present invention.

FIG. 3 is a schematic diagram of the digital model before analyzing the digital layer lines of the first preferred embodiment of the present invention, showing the number of digital layer lines and the number of digital stacked layers in the digital feature portion.

Fig. 4 is a partially enlarged schematic diagram of the digital model before analyzing the digital layer ridges of the first preferred embodiment of the present invention, showing the number of digital layer ridges in the digital feature portion.

5 is a schematic diagram of a digital model after analyzing digital layer lines in the first preferred embodiment of the present invention, showing the number of digital layer lines and the number of digital stacked layers in the digital feature portion.

FIG. 6 is a partially enlarged schematic diagram of the digital model after analyzing the digital layer lines of the first preferred embodiment of the present invention, showing the number of digital layer lines in the digital feature portion.

Fig. 7 is a flowchart of the steps of the second preferred embodiment of the present invention.

Fig. 8 is a schematic diagram of a digital model supported by a digital support column according to a second preferred embodiment of the present invention.

FIG. 9 is a flow chart of the steps of the third preferred embodiment of the present invention.

FIG. 10 is a schematic diagram of a digital model according to a third preferred embodiment of the present invention, showing a triangular mesh on the surface of the digital model.

11 is a schematic diagram of the angle between the grid normal vector and the Z-axis of the digital triangular grid according to the third preferred embodiment of the present invention.

Among them, reference signs:

10 digital model 11 digital feature part

12 digital stack layers 14 digital layer lines

16 digital triangular meshes 161 mesh normal vectors

20 three-axis coordinates 30 digital support columns

An original grid angle D layer distance

O origin P1 original position

detailed description

In order to describe in detail the technical characteristics of the present invention, the following preferred embodiments are given and described as follows in conjunction with the accompanying drawings, wherein:

As shown in Figures 1 to 6, a method for analyzing output articles using layer lines provided by the first preferred embodiment of the present invention includes the steps of defining digital layer lines, analyzing digital layer lines, and deciding to print The angle step and the print item step are as follows:

Define digital layer lines: input a digital model 10 into a computer system (not shown), the digital model 10 defines at least one digital characteristic part 11, please refer to Figure 2, the at least one digital characteristic part 11 is 3D printing For the parts that need to be completed completely, the computer system divides the digital model 10 into a plurality of horizontal digital stacking layers 12 by executing an analysis program. As shown in FIG. A digital layer line 14 is respectively defined between the digital stacking layers 12 . In the first embodiment, please refer to FIG. 2 , the computer system has a screen (not shown in the figure), and an analysis program is built in the computer system to make the digital model 10 appear on the screen. In addition, referring to Fig. 2 and Fig. 3, an original position P1 and an original angle (not shown in the figure) are defined according to the position of the origin O in the digital model 10 relative to a three-axis coordinate 20 (X axis, Y axis and Z axis). Show). In addition, the layer distance D of each digital stacking layer 12 is the same, as shown in FIG. 3 .

Analyzing the digital layer lines: taking any point in the digital model 10 as a rotation point (not shown), the digital model 10 is centered on the rotation point, and rotated relative to a three-axis coordinate 20 at a predetermined angle , record all the rotation angle values (not shown) of the digital model 10 relative to the three axes and the number of digital layer lines 14 that the at least one digital characteristic portion 11 has under each of the angle values, and define it as multiple data . In this first embodiment, the digital model 10 rotates from 0 to 360 degrees relative to the three axes around the rotation point, and the computer system re-executes the digital model 10 every time it rotates a predetermined angle (not shown). The definition of digital layer lines 14 is recorded as a piece of data. In this first preferred embodiment, when the predetermined angle of each rotation is set to 1 degree, the digital model 10 rotates from 0 to 360 degrees relative to the three axes with the rotation point as the center, and rotates 1 degree at a time One piece of data will be obtained, therefore, 3603 pieces of data will be obtained for the total number of data pieces. In the first embodiment, it is taken as an example to set each predetermined angle of rotation as 1 degree, but it is not limited thereto, and the value of the predetermined angle is inversely proportional to the number of data items.

Determine the printing angle: compare the number of digital layer ridges 14 in the at least one digital feature portion 11 and obtain a piece of data with the largest number of digital layer ridges 14, select the data to obtain the relative value of the at least one digital model 10 Angle values on three axes are defined as a forming angle (not shown). In this first preferred embodiment, please refer to FIG. 3 to FIG. 6 , the at least one digital characteristic portion 11 is an example of two digital characteristic portions 11 . In addition, in the step of determining the printing angle, the computer system averages the number of digital layer lines 14 corresponding to the two digital characteristic parts 11 in each data, and obtains the number of the two digital characteristic parts 11 in each data. The average number of digital layer lines 14, the computer system compares these data, selects a piece of data with the largest average number of digital layer lines 14 in the two digital feature parts 11, and the forming angle can be obtained from this data.

Printing article: After rotating the digital model 10 from the original angle of the three-axis coordinates 20 to the forming angle, as shown in Figure 5 and Figure 6, the digital model 10 is formed by an article forming device (not shown). Print to make a solid molded object (not shown in the figure). In the first embodiment, the article forming device is taken as an example of a 3D printing machine.

Please refer to Fig. 3 and Fig. 4, before the numerical layer line 14 analysis, the quantity of the digital layer line 14 of the two digital characteristic parts 11 of this digital model 10 is 6 respectively, and the digital layer line 14 of these two digital characteristic parts 11 The average number of lines 14 is six. Please refer to Fig. 5 and Fig. 6, after the number layer ridge line 14 is analyzed, the quantity of this number layer ridge line 14 increases obviously, and the quantity of the number layer ridge line 14 of the two number feature parts 11 of this digital model 10 is 9 respectively , the average number of number layer lines 14 of the two number characteristic parts 11 is 9, so that the shapes of the two number characteristic parts 11 can be clearly presented.

It can be seen from the above that the effect that the present invention can achieve lies in: solving the existing 3D printing molding technology in the prior art, when the number of layers of the stacked layers printed on the at least one characteristic portion of the solid 3D molding is insufficient In this case, the shape of the at least one characteristic part cannot be clearly presented. Therefore, after the at least one characteristic part is 3D printed, it must rely on manual processing and trimming. The present invention can increase the number of digital layer lines 14 of the two digital characteristic parts 11 of the digital model 10 by analyzing the digital layer lines 14, so that the shapes of the two digital characteristic parts 11 can be clearly presented, and the two digital characteristic parts 11 can be clearly presented. After the digital characteristic parts 11 are printed to form the solid molding, manual processing and trimming can be avoided or greatly reduced.

It should be added that the number of the at least one digital characteristic portion 11 is two as an example, but it is not limited thereto, and the number of the at least one digital characteristic portion 11 can also be an odd number.

Please refer to Fig. 7 and Fig. 8, a method for analyzing output articles by layer lines in the second preferred embodiment of the present invention is mainly similar to the first embodiment disclosed above, the difference is that:

A step of establishing at least one digital support column is further included between the step of determining the printing angle and the step of printing the object: according to the forming angle, the computer system calculates at least one support column required for printing the digital model 10 to form the solid forming object The number support column 30 is shown in FIG. 8 .

In the step of printing an article, the article forming device prints the at least one digital support column 30 into at least one physical support column (not shown).

In the second preferred embodiment of the present invention, the solid molded object may form an oblique angle with the plane (not shown) of the platform (not shown) of the object forming device. Therefore, during the 3D printing process, the at least one solid The support column supports the solid molding to print the solid molding smoothly.

The rest of the steps of the second embodiment are the same as those of the first embodiment disclosed above, and will not be repeated here.

Please refer to FIG. 9 to FIG. 11 , a method for analyzing an output product using layer lines according to the third preferred embodiment of the present invention is mainly similar to the first embodiment disclosed above, except that:

In the step of defining digital layer lines, the entire surface of the digital model 10 is composed of a plurality of digital triangular meshes 16, as shown in FIG. An original grid angle An is defined between the grid normal vector 161 and the Z-axis of the three-axis coordinate 20 , as shown in FIG. 11 .

The step of determining the printing angle and the step of printing the article further includes a grid angle analysis step: inputting the forming angle into the computer system, and calculating a plurality of forming grid angles according to a predetermined method. In the third embodiment, the operation in the predetermined manner is a matrix operation.

In the third preferred embodiment of the present invention, through the grid angle analysis step, the forming grid angles of each of the digital triangular grids 16 of the at least one digital feature portion 11 can be obtained from the forming angle (not shown in the figure) )The data.

The remaining steps of the third embodiment are the same as those of the first embodiment disclosed above, and will not be repeated here.

Claims (9)

1. A kind of 1. method using laminated striation line analysis output article, it is characterised in that include the following steps：

   Define digital laminated striation line：One mathematical model is inputted to a computer system, the mathematical model definition have to The mathematical model is distinguished into water by a few numerical characteristic portion, the computer system by an analysis program is performed Flat multiple digital stack of layers, a number is defined respectively between such digital stack of layers on the mathematical model surface Word laminated striation line；

   Analyze digital laminated striation line：Using any point in the mathematical model as a point of rotation, by the mathematical model with this Centered on the point of rotation, and rotated with a predetermined angular relative to one or three axle bed marks, it is relative to record the mathematical model In all rotation angle values of three axles and under the respectively angle value possessed by an at least numerical characteristic portion Digital laminated striation line number amount, and will be defined as more pen datas；

   Determine printing angle：Compare digital laminated striation line number amount possessed by an at least numerical characteristic portion and obtain A most pen datas is presented in the digital laminated striation line number amount, chooses the pen data to obtain at least one digital mould Type is relative to the angle value of three axles to be defined as a profile angle；And

   Printed matter Products：By the mathematical model after the three axle beds target original angle is rotated to the profile angle, An entity shaping thing is made in the mathematical model by an article shaped device.
2. 2. according to the method using laminated striation line analysis output article described in claim 1, it is characterised in that In this definition numeral laminated striation line step, the mathematical model all surfaces are made up of multiple digital triangle griddings, In the grid normal vector and three axle beds target Z of such digital triangle gridding in an at least numerical characteristic portion An original mesh angle is respectively defined as between axle；In decision printing angle steps and the printed matter Products step Between also include a grid angle analytical procedure：The profile angle is inputted into the computer system, by the forming angle Degree is molded grid angles according to a predetermined way computing into multiple.
3. 3. according to the method using laminated striation line analysis output article described in claim 2, it is characterised in that The predetermined way computing is matrix operation.
4. 4. according to the method using laminated striation line analysis output article described in claim 1, it is characterised in that Printed in the decision and also establish at least one numeral support comprising one between angle steps and the printed matter Products step Post step：According to the profile angle, the computer system computing support the mathematical model printing be made the entity into At least one digital support column needed for type thing.
5. 5. according to the method using laminated striation line analysis output article described in claim 4, it is characterised in that In the printed matter Products step, at least one digital support column printing is made at least one in fact by the article shaped device Body support column.
6. 6. according to the method using laminated striation line analysis output article described in claim 1, it is characterised in that In this definition numeral laminated striation line step, an at least numerical characteristic portion is quantitatively one.
7. 7. according to the method using laminated striation line analysis output article described in claim 1, it is characterised in that In this definition numeral laminated striation line step, an at least numerical characteristic portion is quantitatively to be multiple.
8. 8. according to the method using laminated striation line analysis output article described in claim 7, it is characterised in that In the analysis numeral laminated striation line step, the computer system is corresponding by such numerical characteristic portion in every pen data After digital laminated striation line number amount average computation, the digital laminated striation line in such numerical characteristic portion in every pen data is obtained Par, the more such data of the computer system, the digital laminated striation line for obtaining such numerical characteristic portion are put down The most pen data of equal quantity, the profile angle can be learnt by the pen data.
9. 9. according to the method using laminated striation line analysis output article described in claim 1, it is characterised in that In this definition numeral laminated striation line step, respectively the layer of the stack of layers is away to be identical.