CN105313337A - Integrated movement control method for 3DP pyramid printing - Google Patents

Abstract

The invention relates to an integrated movement control method for 3DP pyramid printing. The method comprises the following steps that firstly, a CLI slice file is analyzed, and a data model of a 3D printing model is built; secondly, the data model is loaded according to layers, each layer presents a sectional view of the 3D printing model, polylines in each layer of outline are divided and regrouped according to given parameters, the sectional view of each layer is divided into several different sectional split graphs in the same direction, and the data of the split graphs form new layer data models; thirdly, the new layer split sectional data are analyzed, and position coordinates of printing areas of all the split sections are built; and fourthly, the new layer data are processed, BMP bitmaps are generated, new layer information circulates, BMP bitmap data are loaded, and a printing head is driven to reach the starting point of the printing areas of the split sections to start printing. The method has the beneficial effects that the flexible and effective sheet division method can effectively remove the part without graphs, only the part needing printing is reserved, and a spraying head can conduct rapid movement and efficient printing as needed.

Description

The integrated motion control method that a kind of 3DP pyramid prints

Technical field

The present invention relates to a kind of control method be used in 3D printing, be specifically related to the integrated motion control method that a kind of 3DP pyramid prints, belong to mechanical automation and print class field.

Background technology

Ink-jet stick powder formula (3DP) 3D printing technique be shower nozzle under computer, run according to the 2-D data in model cross section, optionally at relevant position jet binder, final constituting layer.After every one deck bonding, moulding cylinder declines one and equals the distance of layer thickness, to rise one section of height, release excessive powder, and shift moulding cylinder onto by powder-laying roller, pave and be compacted for powder cylinder; Circulation like this, until the bonding completing whole object.In the process, every one deck two bit data model cross section of formation, map sheet size is fixed.Print control system loads whole map sheet, using whole map sheet as print area, effectively cannot control shower nozzle mobile fast without the realization of figure part, only spray at corresponding eject position, had a strong impact on printing effect.

For this reason, how providing a kind of 3D print control program efficiently, is the object that the present invention studies.

Summary of the invention

For overcoming the deficiencies in the prior art part, the invention provides the integrated motion control method that a kind of 3DP pyramid prints, can effectively reject without figure part, only retaining needs printing portion, realizes shower nozzle speed of seeking quickness as required and walks and efficiently print.

For solving prior art problem, the technical solution used in the present invention is:

The integrated motion control method that 3DP pyramid prints, comprises the following steps:

The first, resolve CLI section file, build the data model of 3D printer model;

The second, load data model by layer, every layer what present is the sectional view of a width 3D printer model; Split according to given parameters the polyline in the profile of every layer, recombinate, the divided several pieces of different cross section segmentation figure gone up in the same direction of the sectional view of so every one deck, these segmentation diagram datas form new layer data model;

3rd, analyze new layer segmentation cross-section data, build each segmentation cross section print area position coordinates;

4th, process new layer data, generate BMP bitmap;

5th, circulate new layer information, loads BMP data bitmap, drives printhead to segmentation cross section print area starting point, start to print.

Further, in step one, in described CLI file, the polyline of component model sectional view is all closed curve, and described polyline is that a series of coordinate points is formed.

Further, in step 2, the concrete grammar of segmentation comprises the following steps:

Sectional view is divided into upper and lower two parts along cut-off rule, and then from starting point, whether adjacent 2 be positioned at cut-off rule two ends, as at two ends, then calculates cut-point coordinate to utilize section formula to judge successively.

Whole polyline is divided into the queue of upper and lower two parts many non-closed coordinate points, obtain top after the queue of upper part coordinate points regularly being connected and close polyline, form top segmentation figure, obtain bottom after the queue of lower part coordinate points regularly being connected and close polyline, form bottom segmentation figure;

Calculate the minimum and maximum value on top segmentation figure and bottom segmentation figure x and y direction respectively; Top segmentation figure and bottom segmentation figure is loaded into print control unit respectively, and control printer mechanical arm and move to map sheet starting position, this position is controlled by computer, when needing forward to print, moves to x direction minimum of a value, y direction minimum of a value; During reverse printing, move to x direction maximum, y direction minimum of a value, start to print.

When calculating more than 2 layers by partitioning parameters for every layer, layer is divided into upper and lower two parts as stated above, and with this Loop partitioning top component, until split complete.

The invention has the beneficial effects as follows: one flexibly and effectively map sheet dividing method can effectively be rejected without figure part, only retaining needs printing portion, realizes shower nozzle speed of seeking quickness as required and walks and efficiently print.

Accompanying drawing explanation

Fig. 1 is 3D model sectional view.

Fig. 2 is 3D model sectional view upper part segmentation figure.

Fig. 3 is 3D model sectional view lower part segmentation figure.

Wherein: 0 is cut-off rule for starting point, 1 be the first cut-point, 2 be the second cut-point, 3 be the 3rd cut-point, 4 is the 4th cut-point, 5.

Detailed description of the invention

In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with specific embodiment, the present invention is described in further detail.

Below in conjunction with accompanying drawing 1-3, the present invention is further analyzed.

The integrated motion control method that a kind of 3DP pyramid of the present invention prints, comprises the following steps:

The first, resolve CLI section file, build the data model of 3D printer model;

The second, load data model by layer, every layer what present is the sectional view of a width 3D printer model; Split according to given parameters the polyline in the profile of every layer, recombinate, the divided several pieces of different cross section segmentation figure gone up in the same direction of the sectional view of so every one deck, these segmentation diagram datas form new layer data model;

6th, analyze new layer segmentation cross-section data, build each segmentation cross section print area position coordinates;

7th, process new layer data, generate BMP bitmap;

8th, circulate new layer information, loads BMP data bitmap, drives printhead to segmentation cross section print area starting point, start to print.

Concrete, as shown in Figure 1, the present invention is after parsing CLI file, and wherein one deck 3D model cross section of acquisition is for shown in figure, and in CLI file, the polyline of component model sectional view is all closed curve, and polyline has a series of coordinate points to form.

By partitioning parameters, Fig. 1 need be divided into upper and lower two parts along cut-off rule 5, upper diagram is as Fig. 2, and bottom graph is as Fig. 3; Segmentation step: from starting point 0, utilize section formula (x=(x1+ λ * x2)/(1+ λ), y=(y1+ λ * y2)/(1+ λ)), wherein: (x1, y1), (x2, y2) is 2 A, B coordinates, P(x, y) on AB line a bit, λ is the ratio of vectorial AP and vectorial PB; Judge that whether be positioned at cut-off rule two ends, as at two ends, then calculates cut-point coordinate successively at adjacent 2.

According to segmentation order, whole polyline can be divided into the queue of upper and lower two parts many non-closed coordinate points, the queue of upper part coordinate points is: (0 ... 1), (2 ... 3), (4 ... 0); The queue of lower part coordinate points is: (1 ... 2), (3 ... 4).

Obtain top after the queue of upper part coordinate points regularly being connected and close polyline, form top segmentation figure, as Fig. 2.Obtain bottom after the queue of lower part coordinate points regularly being connected and close polyline, form bottom segmentation figure, as Fig. 3.

In cutting procedure, calculate the minimum and maximum value on top segmentation figure (Fig. 2) and segmentation figure (Fig. 3) x and y direction, bottom respectively; Fig. 2 and Fig. 3 is loaded into print control unit respectively, and control printer mechanical arm moves to map sheet starting position, and (this position is controlled by computer program, when needing forward to print, moves to x direction minimum of a value, y direction minimum of a value; During reverse printing, move to x direction maximum, y direction minimum of a value) start to print.

When calculating more than 2 layers by partitioning parameters for every layer, layer is divided into upper and lower two parts as stated above, and with this Loop partitioning top component, until split complete.

Other layers can process according to this, and circulation performs.

In sum, the present invention obtains the layering of 3D printer model, profile, the information such as polyline by document analysis of cutting into slices to CLI; By splitting according to given partitioning parameters (physical width of printhead or a numerical value of specifying) polyline, restructuring, is multiple segmentation contour by each layering contours segmentation, forms new polyline; Process new layer data, obtain printhead dynamic mobile coordinate data, walking position of going forward side by side prints.Map sheet dividing method flexibly and effectively in the present invention, can effectively reject without figure part, and only retaining needs printing portion, realizes shower nozzle speed of seeking quickness as required and walks, efficiently print.

The explanation of above embodiment is just for helping method and the core concept thereof of understanding the application; Meanwhile, for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.

Claims (4)

1. an integrated motion control method for 3DP pyramid printing, is characterized in that: comprise the following steps:

The first, resolve CLI section file, build the data model of 3D printer model;

The second, load data model by layer, every layer what present is the sectional view of a width 3D printer model; Split according to given parameters the polyline in the profile of every layer, recombinate, the divided several pieces of different cross section segmentation figure gone up in the same direction of the sectional view of so every one deck, these segmentation diagram datas form new layer data model;

Analyze new layer segmentation cross-section data, build each segmentation cross section print area position coordinates;

Process new layer data, generate BMP bitmap;

Circulate new layer information, loads BMP data bitmap, drives printhead to segmentation cross section print area starting point, start to print.

2. the integrated motion control method of a kind of 3DP pyramid printing according to claim 1, it is characterized in that: in step one, in described CLI file, the polyline of component model sectional view is all closed curve, and described polyline is that a series of coordinate points is formed.

3. the integrated motion control method of a kind of 3DP pyramid printing according to claim 1, it is characterized in that: in step 2, the concrete grammar of segmentation comprises the following steps:

Sectional view is divided into upper and lower two parts along cut-off rule, and then from starting point, whether adjacent 2 be positioned at cut-off rule two ends, as at two ends, then calculates cut-point coordinate to utilize section formula to judge successively.

4. whole polyline is divided into the queue of upper and lower two parts many non-closed coordinate points, obtain top after the queue of upper part coordinate points regularly being connected and close polyline, form top segmentation figure, obtain bottom after the queue of lower part coordinate points regularly being connected and close polyline, form bottom segmentation figure;

Calculate the minimum and maximum value on top segmentation figure and bottom segmentation figure x and y direction respectively; Top segmentation figure and bottom segmentation figure is loaded into print control unit respectively, and control printer mechanical arm and move to map sheet starting position, this position is controlled by computer, when needing forward to print, moves to x direction minimum of a value, y direction minimum of a value; During reverse printing, move to x direction maximum, y direction minimum of a value, start to print.