JPS6391707A - Two-picture drawing method - Google Patents

Abstract

PURPOSE:To effectively use a display screen by not fixing the sizes of 1st and 2nd areas but automatically changing them in accordance with the rate of the length of a material to its diameter and simultaneously moving an initialized picture drawing central position so as to draw pictures fully in the areas. CONSTITUTION:The end display position B of an X-Z side view SDV is associated with the end part of the 1st area 13a-1, and the picture drawing central position A of an X-C elevation view is initialized which is drawn in the 2nd area 13a-2. Where the length and diameter of the material are L and D, respectively, pictures are drawn fully in the areas with the position of a distance L.S/(L+D/2) from the end display position as a boundary position. When an operator wants to change the picture drawing central position, a cursor CSR is moved to from A to A' position, which is regarded as a new picture drawing central position. Where a distance S between the end display position B and the new picture drawing central position A' is S', the position of a distance L.S'/(L+D/2) from the end display position is taken for the boundary between the 1st and 2nd areas. The X-Z side view SDV and the X-C elevation view FRV are again drawn fully in the 1st and 2nd areas by a new scale.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a two-view drawing method, and is particularly suitable for drawing two-view drawings for both turning and C-axis machining. Drawing method.

<Prior Art> In addition to a numerical control function using NC data, recent NC devices are equipped with an automatic programming function that automatically creates NC data by inputting necessary data from an interactive screen.

Among these functions, the flow of NC data creation processing by the automatic programming function is roughly divided into the following 15 steps as shown in FIG.

That is, (11) the first step of selecting execution of "automatic programming", (2) the second step of selecting the data to be input (step to be executed next), and (3) the third step of selecting the material of the material. , (4) Fourth step to set the surface roughness, (5) Fifth step to select the drawing format, (6) Sixth step to input the material shape and its dimensions, (7) Input the part shape and its dimensions. (8) Eighth step of inputting machine origin and turret position, (9) Ninth step of selecting machining process, (11) Tenth step of selecting tool and inputting tool data, (11) Machining conditions 11th step of determination, 0 - 12th step of cutting direction input, (1,1 1st step of cutting range input)
3 steps, 14th step to input whether or not there is an area to be cut with the same tool (15th step to calculate 11 tool paths (NC data creation), and sequentially display predetermined question images (dialogue screen) on the display screen. The operator inputs necessary data from the keyboard according to the question, and finally an NG program (NC data) is created using all the input data.

When the creation of the NC data is completed, the 16th
The NC data created in this step is checked.

In this NC data check step, when an NC data check request is generated, an x-Z side view of material 1 (see FIG. 8) is drawn in a filled manner on the display screen. After that, NC control is executed with the machine locked based on the NC data that has not been created, and the current position of each axis (X, Z) is monitored, and the current position of each axis is displayed on a display device at predetermined intervals. Enter. The display device displays tool 2 based on the input current values of the x and Z axes.
While moving the drawing position, remove the filled part and draw the turning process.

As shown above, in the past, the x-Z of the material was printed on the display screen.
It was a method to check the NC data (simulation of NC machining) by drawing a side view and then moving the tool on the display screen based on the NC data and drawing the process of scraping off the material.

In addition to turning, some machine tools can also perform C-axis machining, which involves controlling the position of a material in the rotational direction (C-axis direction) and drilling or grooving the material. Fig. 9 is an example of C-axis machining. In material 1, 1a is a hole machined by machining for end face drilling, 1b is a hole machined for side face drilling, and 1c is a hole machined by end face grooving. 1d is a groove processed by side grooving (circumferential direction), and 1e is a groove processed by side grooving (longitudinal direction).

However, in the conventional method, even when C-axis machining is included in addition to turning, only the turning process is drawn, and the C-axis process cannot be drawn. There was a problem that the simulation of NC processing was not perfect.

For this purpose, as shown in FIG. 10, the graphic drawing area 3 of the display screen is divided into two, and the x-7 side view S
At the same time as drawing the DV, an X-C front view FRV of the final part shape is drawn in the second area 3b, and based on the created NC data, NC control is executed with the machine locked, and the current position of each axis is monitored. , the current position of each axis is input to the display device at predetermined time intervals, and in the x-7 side view SDV, the drawing position of the tool is moved based on the current values of the x and Z axes of the tool to draw the turning process. At the same time, in the X-C front view FRV, the tool drawing position is moved based on the current X-axis position of the tool, and the final part shape FRV is rotated based on the current C-axis position to draw the state of C-axis machining. An NC data check method has been proposed.

<Problems to be solved by the invention> By the way, the x-Z side view and x-
C In the two-view drawing of the front view, x-Z side view and x
-C The sizes of the first and second regions 3a and 3b for drawing the front view are fixed. For this reason, the longitudinal direction of the material (
If the length (in the Z-axis direction) is short and the diameter is large, the shape of the material cannot be drawn in the first region 3a-cup, resulting in a blank space (in Fig. 10, L is short (without changing D)). If the length of the material is long and the diameter is small, there will be a considerable blank space in the first area 3a), and if the diameter of the material is long, the second area 3b will be left blank.
- It is not possible to draw the shape of the material on the cup, resulting in a blank space.

That is, the conventional two-view drawing method has a problem in that depending on the ratio of the length and diameter of the material, it is not possible to draw a two-view drawing using the display screen effectively.

From the above, it is an object of the present invention to
A two-view drawing that does not have a fixed size, but changes its size according to the ratio of the length and diameter of the material, eliminates unnecessary blank space, and allows you to draw a two-view drawing at an appropriate size. The purpose is to provide a drawing method.

Means for Solving the Problems> FIG. 1 is a schematic explanatory diagram of a two-view drawing method according to the present invention. In the figure, 13' is a display screen, 13a is a graphic drawing area, 13b and 13c are areas for displaying messages and questions, 13d is a soft key area, and the graphic drawing area 13a is an x-Z side view SDV (dotted line area) The first area 13a-1 for drawing the X-C front view FRV (dotted line part) and the second area 13a-2 for drawing the X-C front view FRV (dotted line part)
It is divided into two by the boundary line BL.

A is the initial drawing center position of the X-C front view,
B is the material edge display position, A' is the drawing center position of the changed tax-c front view, and C3R is the cursor.

x-Z side view S drawn in the first area 13a-1
The edge display position B of the DV is made to coincide with the edge of the first area, and the drawing center position A of the X-C front view FRV drawn in the second area 13a-2 is initialized, and the When the distance between the end display position B and the drawing center position A is S, a position at a distance of L - S/ (L + D/2) from the end display position is the boundary position between the first and second areas. At the same time, the drawing magnification (scale) is calculated and each of the first and second areas 13 a
-1.

13 Draw an X-Z side view and an X-C front view in a-2.

In this state, if you want to change the drawing center position, move the cursor C3R from A to A', set A' as the new drawing center position, and set the distance between the end display position B and the new drawing center position A' as S'. , L −S' / from the end display position
The position at a distance of (L+D/2) is set as the boundary position of the first and second areas, and each of the first and second areas 13 a -1 is set on a new scale.

13 a -21c-cup niX -Z side view SDV and X-
C Redraw the front view FRV.

<Example> Fig. 2 is a block diagram of an NC device implementing the present invention;
The figure is an external view of the CRT&MD I device, and FIG. 4 is a schematic block diagram of the graphic display device.

In FIG. 2, 11 is an automatic programming section, 12 is an NC control section, and 13 is a graphic display device (C
RT), 14 is a keyboard, and 15° and 16 are switching units. Although the switching units 15 and 16 are shown as switches for convenience of explanation, they can actually be switched by software processing.

The automatic programming section 11 and the NC control section 12 have a microcomputer configuration, and include a processor, a control program memory (ROM), and a RAM.

The graphic display device 13 and the keyboard 14 are integrally constructed as shown in FIG.
It is called the I device. As shown in FIG. 1, the display screen 13' of the display device 13 includes a graphic drawing area 13a and an area 1 for displaying messages and questions.
3b, 13c and a soft key area 13d. The graphic drawing area 13a is an x-2 side view SDV
(dotted line part) 1st area 13a-1 and X-C
Second area 13a to draw the front view FRV (dotted line part)
It is divided into two parts. Keys 13e, 13e... (see FIG. 3) are provided corresponding to each soft key area 13d, and by pressing the keys, data displayed in the corresponding soft key area can be input. .

In addition, the step selection (
The screen after the rNCNC dectinical process is selected by (see Figure 7) is being drawn, and if the soft key "Move Center Point" is pressed in this state, the drawing center position of the X-C front view FRV will be moved. The screen (FIG. 1) will appear, and if "Start check" is suppressed, NG data check will start from then on.

As shown in FIG. 4, the graphic display device 13 includes a display control section 21, a memory 22, an image buffer section 23 having a plurality of image buffer memories,
A timing signal generator 24 that generates a horizontal synchronizing signal and a vertical synchronizing signal, a readout control section 25 that reads and outputs image data from an image buffer in synchronization with beam scanning of a CRT, and images that are read out from the image buffer memories 23a to 23c, respectively. It has a brightness control section 26 that performs brightness modulation control according to a signal, a color RT 27, and a deflection circuit 28 that deflects the beam in horizontal and vertical directions in synchronization with a timing signal output from a timing signal generator.

The image buffer memories 23a to 23c each have a storage area corresponding to one pixel of the display screen,
At the time of NC data check (NCC machining simulation resining), the image buffer memory 23a stores the x-2 side view (SDV) of the material and other fixed shapes (chuck shape, tailstock shape), and the image buffer memory 23b stores the An x-c front view (FRV) of the part shape is stored, and the tool shape and tool path locus are stored in the image buffer memory 23c.

The two-view drawing method according to the present invention will be described below.

(1) By operating the key 14a (see FIG. 3) on the keyboard 14, the switching units 15 and 16 are set to use the graphic display device 13 and the keyboard 14 for the automatic programming section 11.

(2) Using the program programming function of the automatic post-programming section 11, create NC data interactively in the same manner as the flow of the conventional method shown in FIG. 7, and send the created NC data to the NC control section 12. Processing memory (RAM) 1
2a.

Please input the part shape by C-axis machining as follows. That is, when the part shape input for the turning part is completed in the seventh step shown in Fig. 7 and the soft key "Next Page" is pressed, the display screen shows whether or not to perform C-axis machining as shown in Fig. 5. The question image will be drawn, so enter the number "1" to indicate that C-axis machining will be performed.

As a result, a question image for identifying the end hole is drawn on the display screen, and from then on, each time a predetermined soft key is pressed, the side hole, end groove, side groove (circumferential direction), side groove (Z-axis) is sequentially drawn. A question image for specifying the part shape (direction) is drawn on the display screen, and predetermined data for specifying the part shape is input.

(When the creation of the 31NG data is completed, a step selection screen is displayed on the display screen, so select "Check rNC data" (see the second step in FIG. 7).

(4) As a result, the automatic programming section 11 sends to the graphic display device 13 data specifying the material shape and final part shape, which are input during automatic programming and stored in the built-in memory. Note that the material shape includes the length L of the material in the Z-axis direction and the diameter of the material.

That is, the automatic programming section 11 sends data specifying the chuck shape, tail stock shape, and material shape to the graphic display device 1 regarding the x-Z side view.
3, input the final part shape data for the Z-C front view, and input the tool tip shape and tool holder shape as data common to each view. Note that these data are stored in the memory 22 (see FIG. 4) of the graphic display device.

(5) After printing, the display control unit 21 of the graphic display device 13 uses the length and diameter of the input material to determine the first area 13 a -1 and the second area 13 according to the following formula (% formula %). a-
The position of the boundary line BL (see FIG. 1) of No. 2 is determined. However, the end display position B of the X-2 side view SDV of the material drawn in the first area 13 a -1 is set to the first area 13 a -1.
The drawing center position of the x-C front view FRV drawn in the second area 13a-2 is initially set to position A, and the drawing center position is set to coincide with the edge of the material and drawn in the second area 13a-2. Let the distance between A be S.

(6) l is found, and as a result, the first and second areas 13al
, 13a-2, the display control unit 21 will fill the first and second areas with X-Z.
The drawing magnification (scale) for displaying the side view SDV and the X-C front view FRV is determined, and the input shape data is multiplied by the scale to generate each continuous shape and stored in each image buffer memory 23a to 23c. .

That is, the A-image buffer memory 23a stores an X-Z side view (SDV
), chuck shape figure, and tailstock shape figure are memorized, and the image buffer memo IJ 23 b contains information that the drawing center of the x-C front view (FRV) of the part shape coincides with the initially set point A, and the It is stored so that it is drawn completely in two areas. Note that although no figure is stored in the image buffer memory 23C at this moment, it will be
The tool shape and tool trajectory are stored in parallel with the control.

(7) The readout control unit 25 reads the image from each image buffer memory, inputs it to the brightness control unit, and displays the image in the first and second areas 13a-1 and 13a-2 of the display screen 13' as shown in FIG. 6(a). X-2 side view of the material as shown (SDV
) and the X-C front view (FRV) of the final part shape.

(8) In this state, the operator adjusts the drawing state and
Determine whether it is necessary to change the drawing center position of the front view.

(9) If each figure is fully drawn in the first and second areas 13a-1 and 13a-2) and there is no need to change the IX-C drawing center position, soft key "Start check" (second
(see figure). As a result, the NC control section 12
The NG data stored in the AM 12a is read one block at a time, the NC control is executed with the machine locked, the current position of each axis is monitored, the current position of each axis is input to the display device 13 at predetermined time intervals, and the x- Z side view SD
In V, the drawing position of the tool is moved based on the current values of the x and Z axes of the tool, and the turning process is drawn.
In the X-C front view FRV, the tool drawing position is moved based on the current X-axis position of the tool, and the final part shape FRV is rotated based on the current C-axis position to draw the state of C-axis machining.

(l [9) On the other hand, if you want to change the drawing center position in step (8), press the soft key "Move center point" (see Figure 2). Note that when you want to change the drawing center position, As shown in Figure 6 (al), the second area 13 a
This is the case where there is no large blank on the right side of -1, and the larger the length of the material and the smaller the radius of the material, the larger the blank.

(11) By pressing the soft key "Move center point", cursor C3R (see FIG. 1) is displayed at the current drawing center position A. Note that the display of the soft key area 13d is also changed as shown in FIG.

(After 1, press the soft keys "Cursor Return" and "Cursor Advance" to move the cursor C3R to the desired drawing center position A.
’ and press the execution key.

(+3) As a result, when the cursor position A' is the new drawing center position and the distance between the end display position B and the new drawing center position A' is S', the following formula % formula % ) as the new boundary position of the first and second areas, and add +CX to the first and second areas.
- Find a new drawing magnification (scale) for displaying the Z side view SDV'l' +
-Redraw each figure so that the end of the Z side view SDV arrives at point B and the drawing center of the X-C front view FRV arrives at point A' (see Figure 6 (bl)). , second area 1
3 The blank space seen in a-2 is reduced.

(14) Then, press the executive soft key "End" to return the display in the soft key area 13d to the display shown in FIG. 2, and press the "soft key rNC data check" to step (
An NC data check similar to 9) is started.

<Effects of the Invention> According to the present invention, the sizes of the first and second areas for displaying the X-Z side view and the X-C front view are not fixed, and the length and diameter of the material can be adjusted. The size is automatically changed according to the ratio, and each figure is drawn in an area by moving the initial drawing center position, so unnecessary blank spaces are eliminated and the display screen becomes smaller. It can be used effectively to draw a two-view diagram.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram of a two-view drawing method according to the present invention, Fig. 2 is a block diagram of an NC device implementing the present invention, Fig. 3 is an external view of a CRT & MD I device, and Fig. 4 (graphical A schematic block diagram of the display device. Figure 5 is an example of a dialogue screen when inputting the shape of the C-axis machining part. Figure 6 is an example of a schematic drawing before and after changing the drawing center position. Figure 7 is a flowchart of automatic NC data programming. , Fig. 8 is an example of drawing during conventional NC processing simulation, Fig. 9 is a perspective view of the final part shape. Fig. 10 is an explanatory diagram of conventional drawing between two planes. 13a...Graphic drawing area, 13a -1...First area, 13a -2...Second area, SDV...X-Z side view, FRV...X-C front view, A...Initial drawing center position, B...・Material edge display position, A'...Drawing center position after change, C3R...Cursor patent applicant Fanuc Co., Ltd. agent Patent attorney Chiki Saito Figure 6 (Q) j13゜r5a-L 13a-
2 Figure 7 Figure 8 y! Figure 9

Claims (1)

[Claims] (1) Display a dialog image corresponding to each step of a plurality of data input steps on the display screen, and refer to the dialog image to determine the shape of the material, including the length L in the longitudinal direction of the material and the diameter D of the material, and the turning process. Input data specifying the part shape, machining process, tools used, etc. obtained by C-axis machining, create NC data using the input data, and divide it into two parts according to a request to check the NC data. Draw an X-Z side view of the material in a first area of the graphic drawing area,
In the two-view drawing method of drawing an X-C front view of the final part shape in the second area, the edge display position of the material drawn in the first area is fixed and coincides with the edge of the first area. and initialize the drawing center position of the X-C front view drawn in the second area, and when the distance between the edge display position of the material and the drawing center position is S, the edge display From position L・S/(L+D
Draw an X-Z side view and an X-C front view in each of the first and second areas with the distance of /2) as the boundary position of the first and second areas, and upon request to change the drawing center position, move the cursor is displayed at the drawing center position, the cursor movement destination is the new drawing center position, and the distance between the edge display position of the material and the new drawing center position is S′, then L・S from the edge display position ′/(
A dihedral view characterized in that an X-Z side view and an X-C front view are redrawn in each of the first and second regions with a position at a distance of L+D/2) as a boundary position between the first and second regions. How to draw.