TW201738786A - Method for analyzing output item by using layer pattern lines capable of reducing manual modifications for 3D printing - Google Patents

Abstract

A method for analyzing an output item by using layer pattern lines, which includes the following steps: defining a digital model with at least one digital feature part; a computer system performing an analysis program to divide the digital model into a plurality of horizontally oriented digital stack layers, wherein a digital layer pattern line is defined between each of digital stack layers on the surface of the digital model; selecting a datum of the at least one digital feature part that shows the greatest amount of the digital layer pattern lines, and obtaining an angle value of the digital model relative to three axes from the datum in order to define a forming angle; rotating the digital model from the original angle of the three-axis coordinates to the forming angle, and using an item forming device to perform printing of the digital model to form a physical item.

Description

Method for analyzing produced articles by using layered lines

The present invention relates to 3D printing, and more particularly to a method of analyzing an output article using a layered line.

The conventional 3D printing and forming technology is a layer-by-layer stacking printing technology. When a solid 3D molding is to be manufactured, a digital model is input into a computer, and the digital model is a grid data, which is printed through a 3D. The plurality of stacked layers are stacked to form the solid 3D molded article in a layer-by-layer stack printing manner.

In the foregoing 3D printing and forming 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 portion, and the at least one characteristic portion is to be printed in a particularly complete manner. If the number of layers of the stacked layers listed in the at least one feature portion is insufficient, the shape of the at least one feature portion cannot be clearly displayed. Therefore, after the at least one feature portion is printed in 3D, The present invention solves the above problems by having to perform trimming by manual means in order to clearly present the shape of the at least one feature.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method for analyzing an output article using a layered line to obtain a maximum number of layer traces for at least one of the digital features of the digital model.

According to the present invention, a method for analyzing an output article by using a layered line according to the present invention comprises the steps of: defining a digit layer line: inputting a digit model to a computer system, the digit model defining at least one digit The eigen part, the computer system divides the digital model into a horizontal plurality of digital stacked layers by performing an analysis program, and defines a digital layer ridge between the digital stacked layers on the surface of the digital model. The digital layer line is analyzed: any point in the digital model is a rotation point, the digital model is centered on the rotation point, and rotated at a predetermined angle with respect to a three-axis coordinate, and the digital model is recorded relative to the three axes All of the rotation angle values and the number of digit layer traces possessed by the at least one digit feature portion at each of the angle values are defined as multiple pieces of data. Determining the printing angle: comparing the number of digit layer lines of the at least one digit feature portion and obtaining a piece of data having the largest number of digits of the digit layer layer, and selecting the data to obtain the at least one digit model relative to the three axes The angle value is defined as a forming angle. Printing the article: After the digital model is rotated to the forming angle at the original angle of the three-axis coordinate, the digital model is formed into a solid molded product by an article forming device.

Therefore, the present invention can increase the number of digit layer traces of at least one digital feature portion of the digital model, so that the shape of the at least one digit feature portion can be clearly presented, and the at least one digit feature portion is printed. After the solid molding, it can avoid or greatly reduce the manual processing and trimming.

10‧‧‧ digital model

11‧‧‧Digital Features

12‧‧‧ digital stacking layer

14‧‧‧Digital layer lines

16‧‧‧Digital Triangle Grid

161‧‧ Grid normal vector

20‧‧‧Three-axis coordinates

30‧‧‧Digital Support Columns

An‧‧‧ original grid angle

D‧‧‧Layer distance

O‧‧‧ origin

P1‧‧‧ original location

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart showing the steps of a first preferred embodiment of the present invention.

Figure 2 is a schematic illustration of a digital model of a first preferred embodiment of the present invention.

Figure 3 is a schematic diagram showing the analysis of the digital bit line front digit model of the first preferred embodiment of the present invention, showing the number of digital layer lines and the number of digital stacked layers of the digital feature portion.

Figure 4 is a partial enlarged view of the digital waveform front digit model of the first preferred embodiment of the present invention, showing the number of digital layer traces of the digital feature.

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

Figure 6 is a schematic diagram showing a partial enlargement of the digital waveform after the digital layer of the first preferred embodiment of the present invention, showing the number of digital layer lines of the digital feature.

Figure 7 is a flow chart showing the steps of the second preferred embodiment of the present invention.

Figure 8 is a schematic illustration of a digital support column support digital model in accordance with a second preferred embodiment of the present invention.

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

Figure 10 is a schematic illustration of a digital model of a third preferred embodiment of the present invention showing a triangular mesh of the surface of the digital model.

Figure 11 is a diagram showing the angle between the grid normal vector of the digital triangular mesh and the Z-axis of the third preferred embodiment of the present invention.

In order to explain in detail the technical features of the present invention, the following preferred embodiments are described with reference to the accompanying drawings, wherein: FIG. 1 to FIG. 6 are provided to provide a first preferred embodiment of the present invention. A method for analyzing an output article by using a layered line, comprising the steps of defining a digital layer line step, analyzing a digital layer line step, determining a printing angle step, and printing an item, as shown below: defining a digit layer line: The digit model 10 is input to a computer system (not shown), and the digit model 10 defines at least one digit feature portion 11. Referring to FIG. 2, the at least one digit feature portion 11 is particularly complete for 3D printing. The computer system divides the digital model 10 into a plurality of digital stacked layers 12 by performing an analysis program. As shown in FIG. 3, the digital stacked layers 12 on the surface of the digital model 10 are shown. A digital layer line 14 is defined between each. In the first embodiment, referring to FIG. 2, the computer system has a screen (not shown). The computer system has an analysis program built in, so that the digital model 10 is presented on the screen. In addition, referring to FIG. 2 and FIG. 3, an original position P1 and an original angle are defined according to the position of the digital model 10 with respect to the origin O in a three-axis coordinate 20 (X-axis, Y-axis, and Z-axis) (Fig. Not shown). In addition, the layer spacing D of each of the digital stacked layers 12 is the same as shown in FIG.

The digital layer line is analyzed: any point in the digital model 10 is a rotation point (not shown), and the digital model 10 is centered on the rotation point and rotated at a predetermined angle with respect to a three-axis coordinate 20, All rotation angle values (not shown) of the digital model 10 with respect to the three axes and the number of digit layer lines 14 of the at least one digit feature portion 11 at each of the angle values are recorded and defined as multiple pieces of data. In the first embodiment, the digital model 10 is rotated from 0 to 360 degrees with respect to the three axes centering on the rotation point, and the computer system re-executes the digital model 10 every rotation by a predetermined angle (not shown). The definition of the digital layer line 14 is recorded as a piece of data. In the first preferred embodiment, when the predetermined angle of each rotation is set to 1 degree, the digital model 10 is rotated from 0 to 360 degrees with respect to the three axes centering on the rotation point, and each rotation is 1 degree. Will get a piece of information, therefore, the total number of data will get 360 ³ pieces of information. In the first embodiment, the predetermined angle is set to 1 degree per rotation, but not limited thereto, the predetermined angle value is inversely proportional to the number of data sheets.

Determining the printing angle: comparing the number of digit layer lines 14 of the at least one digit feature portion 11 and obtaining a maximum amount of data of the number of the digit layer lines 14, and selecting the data to obtain the at least one digit model 10 relative to The angle value of the three axes is defined as a forming angle (not shown). In the first preferred embodiment, referring to FIG. 3 to FIG. 6 , the at least one digital feature unit 11 is exemplified by two digital features 11 . In addition, in the step of determining the printing angle, the computer system averages the number of the digit layer lines 14 corresponding to the two-digit feature portion 11 in each piece of data, and obtains the digit of the two-digit feature portion 11 in each piece of data. For the average number of layer lines 14, the computer system compares the data, and selects a piece of data having the largest number of the number of layer lines 14 of the two-digit feature portion 11, and the forming angle can be known from the data.

Printing the article: after the digital model 10 is rotated from the original angle of the triaxial coordinate 20 to the forming angle, as shown in FIGS. 5 and 6, the digit is formed by an article forming device (not shown) Model 10 is printed as a solid shaped article (not shown). In the first embodiment, the article forming device is exemplified by a 3D list machine.

Referring to FIG. 3 and FIG. 4, before the analysis of the digital layer line 14, the number of the digit layer lines 14 of the two-digit feature portion 11 of the digital model 10 is 6, and the digit layer of the two-digit feature portion 11 is The average number of lines 14 is 6. Please refer to Figure 5 and Figure 6, on the digital layer. After the analysis of the line 14 , the number of the number of the layer lines 14 is significantly increased, and the number of the number of layer lines 14 of the two-digit feature portion 11 of the digital model 10 is 9, respectively, and the digit layer of the two-digit feature portion 11 The average number of 14 is 9, so that the shape of the two-digit feature portion 11 can be clearly presented.

It can be seen from the above that the achievable effect of the present invention is to solve the prior art method for the conventional 3D printing, when the number of layers of the stacked layers listed in the at least one feature of the solid 3D molded article is insufficient. Therefore, the shape of the at least one feature portion cannot be clearly presented. Therefore, after the at least one feature portion is printed by 3D, the problem of trimming must be processed manually. The present invention analyzes the number of the layer traces 14 of the digits of the digits of the digital model 10 by analyzing the digits of the layer lines 14 so that the shape of the two-digit features 11 can be clearly presented. After the portion 11 is printed to form the solid molded article, manual processing trimming can be avoided or greatly reduced.

It should be noted that the number of the at least one digit feature portion 11 is exemplified by two, but the number of the at least one digit feature portion 11 may also be an singular number.

Referring to FIG. 7 and FIG. 8 , a method for analyzing an output article by using a layered line according to a second preferred embodiment of the present invention is mainly similar to the first embodiment disclosed above, except that: The printing angle step and the step of printing the article further comprise the step of establishing at least one digital support column: according to the molding angle, the computer system calculates at least one required to support the digital model 10 to print the solid molded product. The digital support column 30 is as shown in FIG.

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

In a second preferred embodiment of the present invention, the solid molded article may be at an oblique angle to a plane (not shown) of a platform (not shown) of the article forming device, and therefore, the at least one is used in the 3D printing process. A solid support column supports the solid molding to smoothly print the solid molding.

The remaining steps of the second embodiment are the same as those of the first embodiment, and will not be described again.

Referring to FIG. 9 to FIG. 11 , a method for analyzing an output article by using a layered line according to a third preferred embodiment of the present invention is mainly similar to the first embodiment disclosed above, except that the definition number is In the layering step, the entire surface of the digital model 10 is composed of a plurality of digital triangular grids 16, as shown in FIG. 10, the grid of the triangular triangular grids 16 of the at least one digital feature portion 11. The normal vector 161 and the Z axis of the three-axis coordinate 20 are respectively defined as an original mesh angle An, as shown in FIG.

The decision printing step and the printing article step further comprise a grid angle analysis step of inputting the forming angle into the computer system and calculating the angle of the plurality of forming grids in a predetermined manner. In the third embodiment, the predetermined mode is operated as a matrix operation.

According to the third preferred embodiment of the present invention, the angle of the forming mesh of the digital triangular mesh 16 of the at least one digital feature portion 11 can be obtained from the forming angle by the mesh angle analysis step (not shown). data.

The remaining steps of the third embodiment are the same as those of the first embodiment, and will not be further described.

Claims (9)

A method for analyzing an output article by using a layered line, comprising the steps of: defining a digit layer line: inputting a digit model to a computer system, the digit model defining at least one digit feature portion, the computer system performing An analysis program divides the digital model into a plurality of horizontally stacked layers, and defines a digit layer line between the digital stacked layers on the surface of the digital model; and analyzes the digital layer line: the digital model Any point in the point is a rotation point, the digital model is centered on the rotation point, and rotated at a predetermined angle with respect to a three-axis coordinate, and all rotation angle values of the digital model with respect to the three axes are recorded and at each angle a value of the number of digit layer traces of the at least one digit feature portion, and is defined as a plurality of data; determining a printing angle: comparing the number of digit layer lines of the at least one digit feature portion and obtaining the digit layer The number of lines presents the most data, and the data is selected to obtain an angle value of the at least one digit model relative to the three axes to define a forming angle And print Item: After the digital model rotates to the angle formed at the original angle of the three axis coordinates, the apparatus forming the article by a digital model of a solid molded article made. The method for analyzing an output article by using a layered line according to the first aspect of the patent application, wherein in the step of defining a digital layer line, all surfaces of the digital model are composed of a plurality of digital triangular grids. Between the mesh normal vector of the digital triangular mesh of the at least one digital feature and the Z axis of the three-axis coordinate, respectively, an initial mesh angle; and the step of determining the printing angle and the step of printing the article The method further comprises a grid angle analysis step: inputting the forming angle into the computer system, and calculating the forming angle into a complex forming mesh angle according to a predetermined manner. The method for analyzing an output article by using a layered line according to the second aspect of the patent application, wherein the predetermined mode is calculated as a matrix operation. The method for analyzing an output article by using a layered line according to claim 1, wherein the step of determining the printing angle and the step of printing the article further comprises the step of establishing at least one digital support column: The forming angle, the computer system operation supports the digital model to print at least one number of support columns required to form the solid shaped article. The method for analyzing an output article by using a layered line according to claim 4, wherein in the step of printing the article, the article forming device prints the at least one digital support column into at least one physical support column . The method for analyzing an output article by using a layered line according to claim 1, wherein the at least one digital feature portion is one in number. The method for analyzing an output article by using a layered line according to claim 1, wherein the at least one digital feature portion is plural in number. The method for analyzing an output article by using a layered line according to the seventh aspect of the patent application, wherein in the step of analyzing the digital layer line, the computer system compares the digital layer corresponding to the digital feature portion of each data. After the average number of lines is calculated, the average number of the number of layer lines of the digit features in each data is obtained, and the computer system compares the data to obtain the average number of the digit layers of the digit features. A piece of information from which the forming angle can be known. The method for analyzing an output article by using a layered line according to the first aspect of the patent application, wherein the layer spacing of each of the stacked layers is the same in the step of defining a digital layer line.