JPH0697417B2 - Display method of cutting part of material in automatic programming for NC - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a method of displaying a work material shape and a cutting portion of the material on an image display device of an NC (numerical control) device,
In particular, the present invention relates to a method of displaying a material in automatic programming for NC in which the viewing direction of the above display can be easily converted and the processing state at a specific height can be simulated.

(Technical background of the invention and its problems) Although the recent spread of NC (Numerical Control) devices is remarkable, there is still room for improvement in terms of ease of handling from the user's perspective. For example, when simulating the cutting state of a material on the image display device of the NC device, it takes a long processing time to display the cutting state in detail, which makes it impossible to perform in real time. Then, in particular, in order to display the above-mentioned cutting state in more detail, if the display is rotated and the graphic viewing direction is changed, the simulation must be restarted from the beginning, resulting in unnecessary processing time. Spending.

Now, develop the processing material on the image display device by trigonometry and display the plan view, front view, side view, etc., and display the part cut by the tool in this material by painting (hereinafter, "Let's think about the case of doing so). A common part of the material shape and the passage area of the tool is a cutting part, and this cutting part is determined by calculating intersection points and boundary points in a complicated shape. Since these calculations are required for all of the plan view, front view, side view, etc., this calculation processing time becomes very long, and it was impossible to perform the processing simulation in real time.

Also, the display in the processing simulation as described above,
The material is only displayed from one predetermined direction, and the state of the cutting portion may not be sufficiently observed. Therefore, in order to more closely observe the state of the cutting portion, when trying to change the graphic view direction of the display, first, after rotating the passage area of the material and the tool, the material shape and the passage area of the tool. It is said that the machining simulation as described above must be redone from the beginning, such as re-obtaining the cutting part which is the common part of the above, resulting in wasteful processing and enormous processing time. There was a problem. Also, it was not possible to simulate only the appearance of the material after processing at a specific height.

(Object of the Invention) The present invention has been made under the circumstances as described above, and an object of the present invention is to shorten the calculation processing time of a cut portion for a plan view, a front view, a side view, etc. A graphic representation of how the material is being cut can be displayed in real time, and once simulated, the above display can be rotated to change the graphic viewing direction without simulating again. It is to provide a method for displaying a cutting portion of a material in automatic programming for NC that can also simulate only a state after processing at a specific height of.

(Summary of the Invention) The present invention relates to a method for displaying a cutting portion of a material in NC automatic programming in which the cutting portion of the material is developed into a two-view drawing or a plurality of more-view drawings and is displayed on an image display device.
Based on the material shape coordinate information and the tool passing area coordinate information,
The cutting portion area is divided in the direction of the vertical axis of the first drawing for each different cutting portion shape in the plane of the first drawing, and the cutting portion image information in the first drawing for each of the divided elements and The coordinate information in the vertical axis direction of the first plan for each element of the cutting section region is generated, and the cutting section image information in the first plan and the first plan for each element of the cutting section region are generated. The coordinate information in the vertical axis direction of is stored respectively, and among the stored elements,
After rotating one element or more in the first view, the result of logically operating the cut portion image information in the first view of the rotated element in the row or column direction and the first view The coordinate information of the second or more plural views is generated and displayed from the coordinate information in the vertical axis direction.

(Embodiment of the Invention) FIG. 1 is a block configuration diagram showing an embodiment of an apparatus for implementing the method of the present invention. A command interpreting section 1 interprets a display command for graphic data in the world coordinate system and Output a command signal. First, the material display unit 2 that has input the material display command output from the command interpreting unit 1 performs signal conversion processing so that the material is displayed on the image display device 18, such as a CRT, by painting the material,
This fill information BLK is output to the display V-RAM 11. Further, the material shape registration unit 3 which inputs the material display command output from the command interpretation unit 1 registers the material shape in order to determine the cut portion. Then, the parameter interpreting unit 4 which inputs the parameter command output from the command interpreting unit 1 interprets the parameters of the display command for displaying the cutting portion, and passes the tool passing area information P1 corresponding to each parameter to the tool passing region information P1. The area information generation unit 5 outputs the parameter type P2 to the second floor plan generation unit 13, and the drawing information P3 regarding the colors and patterns of the first front plan and the second front plan to the drawing information storage unit 14.

Therefore, the tool passage area information generation unit 5 that has input the tool passage area information P1 corresponding to the parameter output from the parameter interpretation unit 4 generates the coordinate information of the boxing area of the tool passage area. Here, the boxing region is a rectangular parallelepiped that bounds an object in the world coordinate system, and means a region in which each side is parallel to any coordinate axis.

Then, the boxing area information of the material shape registered in the material shape registering section 3 and the coordinate information of the boxing area of the tool passing area generated in the tool passing area information generating section 5 are input to the cutting portion information calculating section 6. Then, the cutting portion information calculating unit 6 calculates the coordinate information of the common portion of the boxing area of the material shape and the boxing area of the tool passing area, that is, the boxing area of the cutting portion, A cross section of the cut portion projected on a plane orthogonal to the central axis (hereinafter referred to as “cut section”) is calculated, and the boxing region of the cut portion is divided for each element having the common cut section. The cutting partial element storage unit 7
Coordinate information for each element of the cutting cross section divided by the cutting portion information calculating unit 6 is stored, and coordinate information SE of each cutting cross section is stored.
When 1 is output to the first drawing generator 8, the first drawing generator 8 calculates the boundary point of the cutting portion and calculates the V-RAM information so that the cutting portion is the center of rotation of the tool. A diagram projected on a plane parallel to the axis (hereinafter referred to as “first plan view”) is created, and the coordinate information FP of this first plan view is output to the working V-RAM 9 and the storage V-RAM 16. Therefore, the coordinate information FP is stored in the storage V-RAM 16 as independent coordinate information for each element, while the coordinate information of the first view output to the working V-RAM 9 is the V-RAM information. The transfer information is transferred to the display V-RAM 11 as the coordinate information RAM 1 by the transfer unit 10, and the matrix information generation unit 1
Output to 2. The matrix information generation unit 12 calculates the logical sum of all rows or all columns of the first view generated in the working V-RAM 9 to generate information of the rows or columns of the second view,
This matrix information GY is output to the second plan generation unit 13.

On the other hand, from the image data control unit 15 that converts the viewing direction of the graphic by adding an operation such as rotation to the display of the cutting unit, the exchange information GC
Is output to the V-RAM 16 for storage, the image data transfer control unit 17 converts the necessary cutting portion information out of the coordinate information of the first view stored in the V-RAM 16 for storage into the work information. The necessary drawing information CC of the drawing information P3 stored in the drawing information storage unit 14 is transferred to the working V-RAM 9 and the second surface drawing generating unit 13 while being transferred to the working V-RAM 9.

Also, the parameter type P2 output from the parameter interpretation unit 4, the matrix information GY, the coordinate information SE2, and the drawing information.
The second plan generation unit 13 that has input the CC obtains the coordinate information RAM2 of the second plan from the generated row or column information and the coordinate information of the divided cutting portion, and displays this coordinate information RAM2 for display. V-
Transmit to RAM11.

As described above, the first view coordinate information RAM1, the second view coordinate information RAM2, and the fill information BLK are all input to the display V-RAM11, exchanged for display information, and then input to the image display device 18. Image is displayed.

With such a configuration, the operation of the present invention will be described with reference to the flowchart of FIG.

This flowchart shows the command for displaying the cut portion. First, the tool passage area information generation unit 5 calculates the coordinate information of the boxing area of the tool passage area (step S1). Next, the cutting portion information calculation unit 6 calculates the coordinate information of the boxing area of the cutting portion, and further divides this boxing area into details (step S
2). Here, a "cutting section" projected on a plane orthogonal to the central axis of rotation of the tool is calculated, and the boxing area of the cutting portion is divided for each element having the same cutting section. Then, in the cutting portion element storage unit 7, the coordinate information of each element D ₁ , D ₂ , ..., D _M of the boxing area of the cutting portion divided in step S2 is stored (step S
3), the coordinate information of each of these elements D ₁ , D ₂ , ..., D _M is converted into a display signal one by one as follows (step
S4, S5 ~ S10). That is, in the first plan generation unit 8,
By calculating the boundary points of the cutting part and calculating the V-RAM information, the first view of each element Dj (j = 1, 2, ..., M) is generated in the working V-RMA 9 and the storage V-RAM 16 Each element Dj (j = 1,2 ...,
Each M) is stored as independent image information (step S
6). Next, the first front view for display is generated by sending the first front view of each element Dj from the working V-RAM 9 to the display V-RAM 11 via the V-RAM information transfer unit 10. (Step S
7). Then, in the matrix information generation unit 12, the logical sum of all rows or all columns of the first view of each element Dj is calculated to generate the information of the row or column of the second view of each element Dj ( Step S8). Next, the second surface drawing generation unit 13 obtains the coordinate information of the second surface drawing from the row or column information and the coordinate information of each element Dj, and generates it in the display V-RAM 11 (step S9).

In this way, the coordinate information RAM for the first and second views
Since 1 and RAM2 are generated in the display V-RAM11, the cutting state is simulated and displayed on the image display device 18 in real time by synthesizing these information and the fill information BLK output from the material display unit 2. It is.

FIGS. 3 to 21 show how the cut portion is displayed according to the flowchart of FIG. 2 regarding the relationship between the material and the tool passage area. Fig. 3 shows the relationship between the material MAT and the tool passage area AREA1, and Fig. 4 shows step S.
Boxing area ARE of tool passage area calculated in 1
A2 is shown. FIG. 5 shows a state in which the boxing area AREA3 of the cutting portion is divided into three elements D ₁ , D ₂ and D ₃ in step S2. As shown in FIG. 6, in step S3, the coordinate information is stored as one independent element for each of the _three elements D ₁ , D ₂ , and D _{3 and} displayed for each element. Here, if j = 1 in the step S4, then j = 1 ≦ 3 (= M), so that the process branches to step S6 in step S5.

Figure 7 is shows the elements D _1, shows a first side view in the generation and the stored elements D ₁ to the working V-RAM 9 and stored for V-RAM 16 in step S6, FIG. 8 is the step S7
FIG. 7 shows a first view transferred in step S4 and generated in the display V-RAM 11. The second view shown in FIG. 8 displays only the material shape information. Therefore, the line information for the second view of element D ₁ is as shown in FIG.
The figure shows the first and second views generated in the display V-RAM 11 obtained in step S9.

Here, in step S10, j = 2 and j = 2 ≦
3 (= M), so in step S5, step S6
Branch to.

Similarly, for element D ₂ , the first view generated in the working V-RAM 9 and the storage V-RAM 16 is as shown in FIG. 11, and the element D generated in the display V-RAM 11 is shown. ₁ and D ₂
The first and second views in FIG. 14 are as shown in FIG. Here, FIG. 12 corresponds to FIG. 8 and the element D generated in the working V-RAM 9 and the storage V-RAM 16
It is the figure which transferred the 1st surface view about ₂ to V-RAM11 for a display. Also, FIG. 13 corresponds to FIG. 9 above,
The line information as the second view of the element D ₂ is shown. If j = 3 in step S10, j = 3 ≦ 3 (= M)
Therefore, in step S5, the process branches to step S6.
Similarly, for the element D ₃ , information generation as shown in FIGS. 15 to 18 is performed, so that finally, as shown in FIG. 18, the first view coordinate information RAM 1 and the second view Coordinate information RAM
2 and the fill information BKL are respectively generated in the display V-RAM 11. In step S10, j =
If j is 4, j = 4> 3 (= M), so step S5
Branches to end at.

By the way, the coordinate information of the first plan is calculated in this way, and the coordinate information of the second plan is generated in the display V-RAM 11 based on the coordinate information of the first plan to display the image. While the display from the one-view direction is performed on the device 18, the coordinate information of each of these elements is stored in the storage V-RAM 16, so that the operator viewing the display can further confirm the details. When it is desired to change the graphic view direction of the display, the view direction can be easily changed according to the above steps S6 to S9 without performing the above-described processing simulation again by performing the following.

That is, as shown in FIG. 5, the boxing area AREA3 of the cutting portion is divided into three elements D ₁ , D ₂ and D ₃ ,
As shown in the figure, each of the three elements D ₁ , D ₂ , D ₃ is 1
It is stored in the memory V-RAM 16 as one element. Therefore, for example, when the element D ₂ is rotated and the graphic viewing direction is to be converted and displayed, for example, the operator operates an operation panel (not shown) or the like to convert the conversion information GC from the image data control unit 15. When the image data is transferred to the storage V-RAM 16, the image data transfer control unit 17 outputs the necessary cutting portion information out of the coordinate information of the first plan stored in the storage V-RAM 16 to the work V-RAM 16. -Transfer to RAM9, and as shown in FIG. 20, rotate and generate the first view of the element D ₂ and transfer the rotated row information of the first view to the matrix information generation unit 13. Then, as shown in FIG. 20, the line information GY of the second surface drawing is constructed and transferred to the second surface drawing generating unit 13. Therefore, in the second plan generation unit 13, as shown in FIG. 20, the line information GY, the height information of the element D ₂ and the drawing information CC stored in the information drawing information storage unit 14 The _second of the rendered elements D 2
Generate a floor plan. Then, in the display V-RAM 11, the material shape and the cut portion are overlapped and generated on the first and second front views of the rotated element ₂ , and a desired graphic is generated as shown in FIG. A display in which the viewing direction is changed is displayed.

Although the example in which the element D ₂ is rotated to convert the graphic viewing direction once is shown here, the viewing direction can be further converted by repeating the same operation. Further, it is obvious that the present invention can be applied not only to the other elements D ₁ and D ₃ but also to a display in which a plurality of these elements are combined. Further, although the display of the two views of the first view and the second view has been described here, it is obvious that the same can be applied to a plurality of views of three or more views.

(Effect of the invention) As described above, according to the method of the present invention, it is not necessary to perform complicated calculation such as the boundary point of the cut portion in order to generate the second or more plural views, and -Since only a simple calculation of RAM is required, the software capacity can be small, the processing time can be shortened, and the machining simulation can be performed in real time. Furthermore, once the material has been processed and simulated, its coordinate information is stored.
With regard to the material, it is possible to easily display the state after processing viewed from another direction with simple operation, there is no dead time to re-simulate processing, and the state after processing at a specific height is also displayed. You will be able to.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an apparatus for implementing the method of the present invention, FIG. 2 is a flow chart for explaining an operation example of the present invention, and FIGS. 3 to 21 are displayed according to this flow chart. It is a figure which shows the relationship of the material and tool passage area | region which are made. 1 ... Command interpretation unit, 2 ... Material display unit, 3 ... Material shape registration unit, 4 ... Parameter interpretation unit, 5 ... Tool passage area information generation unit, 6 ... Cutting part information calculation unit, 7 ... … Cutting partial element memory, 8 …… first drawing generator, 9 …… work V-RAM, 10 …… V-RAM information transfer unit, 11 …… display V-RA
M, 12 ... Matrix information generating unit, 13 ... Second view generating unit, 14
...... Drawing information storage unit, 15 …… Image data control unit, 16 ……
V-RAM for storage, 17 ... Image data transfer control unit, 18 ... Image display device.

Claims (1)

[Claims] 1. A method for displaying a cutting portion of a material in NC automatic programming for expanding a cutting portion of the material into a two-view drawing or a plurality of more than one views and displaying the same on an image display device. Based on the tool passing area coordinate information, the first time each time the shape of the cutting portion in the plane of the first plan is different.
The cutting part area is divided in the vertical axis direction of the plan view, and the cutting part image information in the first plan view of each element of the divided cutting part area and the vertical axis direction of the first plan view of each element The coordinate information is generated, and the cutting portion image information in the first plan view and the coordinate information in the vertical axis direction of the first plan view are stored for each element of the cutting section region and stored. After rotating one or more elements among the respective elements in the first view, the cutting portion image information in the first view of the rotated element is logically operated in the row or column direction. From the result and the coordinate information in the vertical axis direction of the first view, the coordinate information of the second view or more multi-views is generated and displayed. How to display the cutting part.