JP2719248B2 - Work Machine Weight Analysis System Using 3D Graphics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates, using the three-dimensional graph I Ffuku processing system, performs a weight analysis of the work machine,
It relates to a system that supports the design.

[0002]

BACKGROUND ART working machine with a weight change, as a support system for particular design agricultural vehicles, such as combines, conventionally, CAD system or the like, any graphical processing system capable of being used.

[0003]

However, the tools used in this case only contribute to a two-dimensional study. For this reason, the Wh of each element block constituting the machine is required.
at-if analysis, i.e., when one element block is slightly moved on the display screen or when the weight is changed, the position of the center of gravity of the entire machine is changed with respect to the element block, and the degree of interference with other element blocks; Comprehensive analysis to examine changes in design was almost impossible.

[0004] System This object of the invention is to perform the weight analysis of the work machine by using the high-speed computer capable of performing a three-dimensional graph I try processing, thereby capable of supporting the design of the work machine Is to provide.

[0005]

According to the present invention, there is provided a unit shape file for storing a shape of a work machine as a target model into a plurality of three-dimensional functional units, storing shape data of each unit, and a center of gravity of each unit. A mass property file for storing mass property data of position data and weight data, means for calculating the position of the center of gravity of the model based on the center of gravity position data of each unit, and a center of gravity of the model associated with weight changes, such as a change in chaff quantity Means for plotting and displaying the position on the two-dimensional coordinates set in the X and Y axes of various model design quantities such as the left-right length, the front-back length, and the like.

Further, the position of the center of gravity due to a change in weight, such as a change in the amount of paddy, is plotted and displayed on three-dimensional coordinates in which model design quantities such as a horizontal length, a vertical length, and a front-rear length are set on the X and Y axes. And means for performing the operation.

[0007] The present invention is characterized in that a means is provided for displaying a predetermined target or dangerous center of gravity position area on the two-dimensional coordinates.

[0008]

In the present invention, a workstation, a super minicomputer, or the like, which can perform high-speed processing as hardware and has a high-precision color display, is used.

[0009] The system of the present invention includes at least a unit shape file and a mass property file. The unit shape file divides the shape of the working machine, which is the target model, into a plurality of three-dimensional functional units and stores shape data of each unit. By using this shape data, the three-dimensional shape of each unit can be displayed on the display screen. The displayed shape is not only a contour line but also a process (for example, a color process) for each surface.

[0010] The mass property file stores the center of gravity position data and the weight data of each unit as mass property data.

In the system of the present invention having the above file structure, in claim 1, the center of gravity of the entire model is obtained based on the center of gravity data of each unit with reference to the mass property file. here,
Since each unit has a change in weight, the position of the center of gravity of the model obtained as described above changes with the change in weight. In the present invention, there is provided means for plotting and displaying the center of gravity position of the model on two-dimensional coordinates in which various design quantities such as the left-right length and the front-rear length are set on the X and Y axes. A change in the position of the center of gravity appears. By looking at the graph of the two-dimensional coordinates, the designer can easily and accurately know where the center of gravity is located in the left-right length and the front-back length.

According to the second aspect, since the position of the center of gravity of the model is plotted and displayed in three-dimensional coordinates, intuition is enhanced in addition to the above.

In the third aspect, since a predetermined target or dangerous center-of-gravity position area is displayed on the two-dimensional coordinates, a change in the center-of-gravity position caused by a change in weight falls within this area. Alternatively, the weight of each unit can be designed so as not to fit.

[0014]

FIG. 1 is a block diagram of the system of the present invention. As the processor 1, an extremely high-speed processor is used as compared with an ordinary CPU for a bass computer. Areas such as an OS area, a program area, a file data development area, and other work areas are allocated to the main memory. The video memory 3 is connected to a high-precision color display 4. If necessary, a dedicated processor for the graph I box process is connected to this portion. I / O controller 5
Are connected to a unit shape file 6, a mass property file 7, and a display file 8, and a keyboard 9 and a mouse 10 are connected as input devices. The unit shape file stores the shape data of each unit when the target model is divided into a plurality of three-dimensional functional units. The mass property file 7 stores mass property data of the center of gravity position data and weight data of each unit. The display file 8 includes the display color and diameter of a sphere representing the position of the center of gravity of each unit, and other three-dimensional matrices.
Data related to display such as display data for ricks scale is stored.

FIG. 2 shows a unit shape file. Here, unit NO = 1 indicates that the mowing unit is present, and unit NO = 2 indicates that the threshing unit. FIG. 3 shows a mass property file. The weight of the mowing part of the unit NO = 1 is 115 kg, and the coordinates of the position of the center of gravity are -500, 28, X, Y and Z, respectively.
300 (reference point previously reference plane are determined anywhere on surface) indicates that it is. FIG. 4 shows a display file. For example, the display of the position of the center of gravity of the mowing portion of the unit NO = 1 indicates that the color is red (here, the position is displayed by a sphere) and the diameter is 5.

FIG. 5 shows an example in which each unit of a model (here, a combine), the position of the center of gravity of each unit, and the position of the center of gravity of the model are displayed on a display screen in the system of the present invention. In the figure, G1 is a sphere indicating the center of gravity of a unit whose weight does not change, and G2 is a sphere indicating the center of gravity of a unit whose weight changes. GM is a sphere representing the center of gravity of the model. Here, it indicates that the GM gradually changes in accordance with the increase of the unit G2 which fluctuates.

FIG. 6 is a flowchart showing the general operation of the present system.

FIG. 6 shows a flowchart for calculating the position of the center of gravity of the model on the display screen and simultaneously displaying the position of the center of gravity and the unit shape.

When the operation starts, the position of the center of gravity and the weight are read from the mass property file 7 for each unit, and the position of the center of gravity of the model is calculated at n1. The following formula is a calculation formula for calculating the position of the center of gravity of the model.

[0020]

(Equation 1)

Next, display data such as the color and radius of the barycentric sphere of each unit is read out from the display file 8,
At n2, the shape of each unit and the position of the center of gravity of the model are displayed on the display screen. In the example shown in FIG. 5, the display of each unit and one of the centroid GMs are displayed.

FIG. 7 is a flowchart generally performed together with the operation of FIG. In this flow, after referring to the position and weight of the center of gravity of each unit from the mass property file 7, the ball of the center of gravity of each unit is displayed at n3, and the processing ends. Therefore, when FIG. 7 is completed,
As shown in FIG. 5, the Q of the position of the center of gravity of each unit shown in G1 or G2 is displayed.

FIG. 8 shows an operation corresponding to claim 1.

First, from the mass property file 7,
By referring to the position of the center of gravity and the weight of each unit, the shift amount data from the reference position such as the ground contact length, the distance between ruts, the crawler position, etc. are read out from the display file 8, and two of them are X and Y. Set to axis. At n4, the position of the center of gravity of the model is calculated based on the data of the mass property file, and at n5, a window for a graph of two-dimensional coordinates is set.

Then, the value of the position of the center of gravity is converted into a graph coordinate position at n6, and a graph is displayed at n7. FIG.
(A) and (B) show graph display examples at that time. The X-axis in FIG. 4A shows the distance between the ruts from the reference position as a percentage representing the left-right balance, and the Y-axis shows the amount of shift in the front-rear direction from the reference position as a percentage, and shows the front-rear balance. It is. Also, the X axis in FIG. 3B indicates the left-right balance, and the vertical axis indicates the falling angle in percentage. FIG. 7A shows that the position of the center of gravity of the model changes as the person sits in the driver's seat or the amount of paddy increases, that is, as the weight variation unit in FIG. 5 increases. For example, A1 in FIG. 4A indicates the weight position of the model when a person sits on the driver's seat.

FIG. 10 shows an operation corresponding to claim 2.

First, it waits for the display method to be specified at n10, and determines whether the specified display method is two-dimensional display or three-dimensional display (n11). In the case of two-dimensional display, data for graph setting is read from the display file 8 and n1
2 performs two-dimensional display. When three-dimensional display is designated, 3D matrix data is read from the display file 8, and three-dimensional display is performed at n13. FIG. 11 shows an example of three-dimensional display.

In the present embodiment, in the above-mentioned graph display of the two-dimensional coordinates, a predetermined target center-of-gravity position region can be displayed so as to be superimposed on the graph. The area Q in FIG. 9A shows this target center of gravity position area. Instead of the target center of gravity position area, it is also possible to represent a dangerous center of gravity position area. When performing the weight design, the operator performs the design so that the model center of gravity position falls within the target center of gravity position region on the two-dimensional graph and does not fall within the dangerous center of gravity position region.

[0029]

According to the present invention, a mass property file for storing mass property data of each unit is provided, and the position of the center of gravity is plotted and displayed on a two-dimensional graph based on the data of the mass property file. Has the advantage of being very easy to do. Also, by displaying this three-dimensionally, the change in the position of the center of gravity can be understood sensibly, while maintaining the accuracy, and the target center-of-gravity value area and the dangerous center-of-gravity value area can be displayed on the two-dimensional coordinates. This makes it easier to design.

[Brief description of the drawings]

FIG. 1 shows a configuration diagram of a system of the present invention.

FIG. 2 shows a unit shape file.

FIG. 3 shows a mass property file.

FIG. 4 shows a display file.

FIG. 5 is a diagram showing a display example of each unit and a barycenter sphere;

FIG.

FIG.

FIG.

FIG. 10 is a flowchart showing the operation of the present invention.

9A and 9B show two-dimensional coordinate graphs.

FIG. 11 is a diagram showing a graph of three-dimensional coordinates.

[Explanation of symbols]

 6- Unit shape file 7- Mass property file 8- Display file

Claims (3)

(57) [Claims] 1. A unit shape file for dividing a shape of a work machine serving as a target model into a plurality of three-dimensional function units and storing shape data of each unit; and mass properties of center-of-gravity position data and weight data of each unit. A mass property file for storing data; means for determining the position of the center of gravity of the model based on the position data of the center of gravity of each of the units; Means for plotting and displaying various model design quantities in two-dimensional coordinates set on the X and Y axes, and the like. A weight analysis system for a working machine using three-dimensional graphics, comprising: 2. A unit shape file for dividing a shape of a work machine serving as a target model into a plurality of three-dimensional functional units and storing shape data of each unit, and mass properties of center-of-gravity position data and weight data of each unit. A mass property file for storing data; a means for obtaining the position of the center of gravity of the model based on the center of gravity position data of each unit; a position of the center of gravity due to a weight change such as a change in paddy amount; Means for plotting and displaying model design quantities such as length on three-dimensional coordinates set on the X and Y axes, and a weight analysis system for a working machine using three-dimensional graphics, comprising: . 3. The method according to claim 1, wherein:
A weight analysis system for a working machine using three-dimensional graphics, comprising: means for displaying a predetermined target or dangerous center-of-gravity position area.