JPS6324307A - Nc data checking method - Google Patents

Abstract

PURPOSE:To check the state of working of a C axis by displaying the respective X-Z side view and X-C front view on a CRT in the course of the final working, based on a data from an automatic programming part or an NC control part. CONSTITUTION:When an automatic programming part 11 is selected by controlling the switching units 15, 16 by a keyboard 14, an X-Z side view SDV and an X-C front view FRV of the final shape are displayed on a CRT 13, based on a data of the programming part 11. On the other hand, when an NC control part 12 is selected, the side view SDV and the front view FRV in the course of working are displayed together with a tool, based on a data from a RAM 12a of a built-in working memory. In this way, a state of working of a C axis can also be executed easily and exactly.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an NC data checking method, and in particular checks NC data created by drawing machining states of both turning machining and C-axis machining. This relates to a method of checking NC data.

<Prior Art> In addition to a numerical control function using NC data, recent NG 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, (1) the first step of selecting execution of the automatic programming 7, (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) Part shape and its dimensions. 7th step to input, (8) 8th step to input machine origin and turret position, (9) 9th step to select machining process, 10th step to select fil tool and input tool data, 01) Determine machining conditions 11th step, (1) 12th step to input cutting direction, (13th step to input cutting range, (14) 14th step to input presence or absence of area to be cut with the same tool (1) Calculation of tool path The 15th step (NC data creation) sequentially displays predetermined question images (dialogue screen) on the display screen, prompts the operator to input the necessary data from the keyboard according to the question, and finally inputs the data. An NG program (NC data) is created using all the data that has been created.

When the creation of the NC data is completed, the first
The NC data created in 6 steps is checked.

In this NC data check step, when an NC data check request is generated, the x-7 side view of material 1 (see FIG. 17) is drawn filled in on the display screen. After that, NC control is executed with the machine locked based on the created NC data, 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. input. 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.

<Problems that the invention is trying to solve> As mentioned above,
Conventionally, the X-Z side view of the material is drawn on the display screen, and the NC data is checked by drawing the material being removed by moving the tool on the display screen based on the NC data (simulation of NC machining). The purpose of the event was to conduct a

By the way, some machine tools are capable of performing C-axis machining, which involves drilling or grooving a material by controlling the position of the material in the rotational direction (C-axis direction) in addition to the turning process.

Figure 18 is an example of C-axis machining, where material 1 is 1a
1'lo is a hole machined by machining, 1'lo is a hole machined by machining, 1c is a groove machined by end grooving, 1d is a side grooving process (circumferential direction). The groove 1e is a groove machined by side grooving (in the 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.

From the above, it is an object of the present invention to provide an NC data checking method that can depict the state of C-axis machining in addition to turning machining.

Means for Solving the Problems> FIG. 1 is a block diagram of an NC device that implements the method of the present invention.

11 is an automatic programming section, 12 is an NG control section, 13
1 is a graphic display device (CRT), 14 is a keyboard, and 15 and 16 are switching units. Also, on the display screen, SDV shows the X-Z side view of the material,
FRV is an X-C front view of the final part shape.

Function> NC data is created interactively using the programming function of the automatic programming section 11, and the created NC data is sent to the NC control section 12 and stored in the built-in machining memory (RAM) 1.
2a.

If an NC data check request occurs in this state,
The automatic programming section 11 sends data specifying the material shape and final part shape to the graphic display group W15, and displays an X-Z side view (SDV) of the material on the display screen.
) and the X-C front view (FRV) of the final part shape.

On the other hand, the NC control unit 12 uses the well-known N on the basis of the NC data.
While executing C control processing, monitor the current position of each axis,
The current position of each axis is input to the graph ink display device 13 at predetermined time intervals, and in the X-2 side view, 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. However, in the x-C front view, the tool drawing position is moved based on the current X-axis position of the tool, and the workpiece is rotated based on the current C-axis position to draw the state of C-axis machining.

<Embodiment> Fig. 1 is a block diagram of an NC device implementing the present invention;
The figure is an external view of the CRT&MDI device, and FIG. 3 is a schematic block diagram of the graphic display device.

In FIG. 1, 11 is an automatic programming section; 12
13 is an NG control unit, and 13 is a graphic display device (
CRT), 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 are configured with a microphone and four computers, and have a built-in processor, control program memory (ROM), and RAM.

The graphic display group W13 and the keyboard 14 are integrally configured as shown in FIG.
It is called the I device. As shown in FIG. 1, the display screen is divided into an interaction screen display area 13a and a plurality of soft key areas 13b, and a key 13c corresponding to each soft key area.

13c... (see FIG. 2) are provided, and by pressing the key, data displayed in the corresponding soft key area can be input.

When checking NC data, the X-Z side view (SDV) of the material is drawn on the left side of the display screen, and the X-C front view (FRV) of the final part shape is drawn on the right side.

As shown in FIG. 3, the graphic display device 13 includes a display control section 2, a memory 22, an image buffer section 23 having a plurality of image buffer memories,
A timing signal generator 24 that generates a horizontal synchronization signal and a vertical synchronization 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 CRT 27, and a deflection circuit 28 that deflects a beam in horizontal and vertical directions in synchronization with a timing signal output from a timing signal generator.

Each of the image buffer memories 23a to 23c has a storage area corresponding to one pixel of the display screen,
When checking NC data (when simulating NC machining)
The image buffer memory 23a stores the X-2 side view (SDv) of the material and other fixed figures (chuck shape, tailstock shape), and the image buffer 7 memory 23b stores the x-C front view (SDv) of the part shape. FRV), and the image buffer memory 23c stores the tool shape and tool path locus.

Below, the NC data check processing according to the present invention will be explained.

(1) By operating the key 14a 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) After programming, the programming function of the automatic programming section 11 creates NC data interactively in the same way as the flow of the conventional method shown in FIG. Processing memory (RAM)
Store in IZa.

Note that the part shape obtained by C-axis machining is inputted as if under breath. That is, when the part shape input for the turning part is completed in the seventh step shown in Fig. 16 and the soft key "Next Page" is pressed, the display screen shows whether or not to perform C-axis machining as shown in Fig. 4. 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 each time a predetermined soft key is pressed after breathing, the side hole, end groove, side groove (circumferential direction), side groove (Z Draw a question image on the display screen to identify the axial direction.

5 and 6 are explanatory diagrams of data for specifying the end holes. FIG. 5 shows the case where the holes are drilled at equal intervals, and FIG. 6 shows the case where the holes are drilled at unequal intervals.

Now, on the end face hole question screen, the data shown below, Machining type: K = 1 (1: Drilling, 2: Grooving) Machining location: W = 1 (0: Side, 1: End face) Position ( X coordinate value)...DX-X direction position interval of holes...AB=Opening (0
: Evenly spaced, 1: Unequally spaced) Number of pieces... AC = Number of large pieces Initial angle... A1 = Heavy position (angle of first hole) Angle...
A2 = 2nd hole W (in the case of uneven spacing) A3 = 3rd hole position (in the case of uneven spacing) Final angle AE = Final angle depth if multiple holes are drilled・・DT= Hole depth Center fir... CG = mouth (1: Yes, 0: No) Pitch PT = Input the specified data among the settings when thread cutting.

Figure 7 is an explanatory diagram of data for identifying side holes.
The question image shows the processing type...K=1 (1: drilling, 2: grooving) Processing location...W=O (0: side, 1: M4 surface) position (2-seat drift value)...LZ=hole It is the same as the end face hole except for the Z direction position.

FIG. 8 is an explanatory diagram of data for specifying end grooves,
On the question screen, the following data, processing type...K=
2 (1: Drilling, 2: Grooving) Processing location: W = 1 (
0: side surface, 1: end surface) position (X coordinate value)...DX-X direction position interval of grooves...AB=opening (0: evenly spaced, 1: unevenly spaced) number...AC-initial number of grooves Angle...A1 = Heavy position (cutting start angle of the first groove) Angle...A i == i-th groove cutting start angle (i
= 2.

3,...5. (In the case of uneven spacing) Final angle AE - Cutting start angle depth of the final groove when machining multiple grooves...DT = Groove depth Groove diameter...WT - Groove diameter Groove length...AG = Groove length Enter the specified data (designation of cutting angle).

Figure 9 is an explanatory diagram of data for specifying side grooves (circumferential direction), and the question image is processing type: K=2 (1: drilling, 2: grooving) processing location: w=o (0: side surface, 1: end surface) Machining direction/
・CD=1 (0: circumferential direction, 1: Z direction) Position t (Z coordinate value)...LZ=Same as the end groove except for the Z direction position of the groove.

Figure 10 is an explanatory diagram of data for specifying side grooves (Z direction), and in the question image, the data processing type shown below...K=2 (1: drilling, 2: grooving) processing Location: w=o (0: side surface, 1: end surface) Machining direction: CD=1 (0: same direction, 1: Z-axis direction) Position (Z coordinate value): LZ = Z-direction position of the groove Interval...A
B = Number of openings (0: evenly spaced, 1: unevenly spaced) AC = Number of grooves Initial angle A1 = Heavy position (first groove angle) Angle...
A i = angle of i-th groove (i = 2, 3°...5.
(In the case of uneven spacing) Final angle AE - Final groove angle depth when machining multiple grooves
・DT=groove depth, groove diameter...WT=groove diameter, groove length...AG-groove length and angle specification), enter the specified data.

(3) When the creation of the NC data is completed, a step selection screen is displayed on the display screen, so select "Check rNC data" (see the second step in FIG. 16).

(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. Furthermore, the first thought
The shape shown in Figure 8 is the final part shape.

That is, for the x-7 side view, the automatic programming section 11 sends data specifying the chuck shape, tail stock shape, and material shape to the graphic display device 1.
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. 3) of the graphic display device. Further, the tool tip shape is the shape shown in FIG. 15, and which tip shape to use is stored in the memory 22 according to the tool number.

(5) After the display, the display processing unit 21 of the graphic display device 13 generates various figures using the input shape data, and generates various figures in each image buffer memory 23a.
~23c. That is, the image buffer memory 23a stores the X-Z side view (SDV), chuck shape, and tailstock shape of the material, and the image buffer memory IJ 23b stores the X-C front view (FRV) of the part shape. remember. Note that although no figure is stored in the image buffer memory 23c at this moment, it will be
Tool shapes and tool trajectories are memorized in parallel with control.

(6) The readout control unit 25 reads the image from each image buffer memory, inputs it to the brightness control unit, and displays an X-2 side view (SD) of the material on the display screen as shown in FIG.
V) and the X-C front view (FRV) of the final part shape.

(7) In this state, when the soft key "Start check" is pressed, the NC control unit 12 reads the NC data stored in the RAM 12a one block at a time, and if the NC data is a T function command for tool exchange, the tool number is If the NC data is for path control, it is input to the automatic programming section 11, and if it is NC data for path control, it performs a well-known path dividing section, monitors the current position of each axis, and inputs the current position of each axis to the automatic programming section 11 at predetermined intervals. do. The machine tool is locked and does not move.

(8) The automatic programming section 11 inputs the input tool number and the current position of each axis of the tool at predetermined time intervals to the display control section 21 of the graphic display device 13.

(9) When the tool number and current position (initially the initial position of the tool) are input, the display control unit 21 reads the tool shape corresponding to the tool number from the memory 22 and draws the tool shape at the current position. A graphic is generated and stored in the image buffer memory 23c.

Thereafter, the readout control section 25 reads images from each image buffer memory and draws on the CRT 27 an X-Z side view, an X-C front view, and a tool shape of the material before being scraped.

(After IO1, when turning is performed with the tool moving, the X-2 side view shows how the workpiece is being scraped off as the tool moves (see Figure 12).
-C Front view does not change.

That is, the display control unit 21 generates an image so that the tool shape is drawn at the position based on the tool position coordinate values of the x and z axes that are input at predetermined time intervals, and stores it in the image buffer memory 23c. At the same time, an x-2 side view of the material after being scraped is generated according to the movement of the tool at predetermined time intervals and is stored in the image buffer memory 23a.

As a result, the appearance of the material being scraped away is drawn on the display screen as shown in FIG.

(11) On the other hand, in the case of C-axis machining (for example, in the case of round end face grooving), each time the tool moves, the tool shape and tool trajectory are displayed on the display screen together with the X-Z side view and the X-C front view. to draw. Note that no scraping is performed in the X-Z side view.

Then, after the tool is positioned and cuts a predetermined amount into the material, the C-axis rotation starts and groove cutting begins, and the current position (rotation amount) in the C-axis direction is input to the display control unit 21 at predetermined time intervals. As a result, the display control unit 21
rotates the X-C front view (final part shape) by the amount of rotation and stores it in the image buffer memory 23b.

Thereafter, images are read from each image buffer memory and combined, and a figure after the part shape has been rotated by a predetermined amount is drawn on the display screen as shown in Figure 13, and then processed by C-axis machining (# face grooving). The process of cutting the grooves will be depicted.

Furthermore, in the case of side grooving, the manner in which the groove is cut by C-axis machining (side grooving) is similarly drawn on the display screen as shown in FIG.

<Effects of the Invention> According to the present invention, the display screen is divided into two, an x-Z side view of the material is drawn on one side, and in the case of turning, the material is scraped off in the X-Z side view. At the same time, an X-C front view of the final part shape is drawn on the other side of the display screen, and in the case of C-axis machining, the final part shape is configured to be rotated according to the rotation of the C-axis. In addition to turning, C-axis machining can also be recognized, allowing complete NC data checking (NC machining simulation).

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the NC device that implements the present invention, Fig. 2 is an external view of the CRT & MDI device in the NC device, Fig. 3 is a block diagram of the graphic display device, and Fig. 4 shows the shape of the C-axis machining part. Examples of dialogue screens when inputting data, Figures 5 to 10 are explanatory diagrams of data that specify the shape of the C-axis machined part, and Figures 11 to 14 are cutting situations during NC machining simulation according to the present invention. Fig. 15 is an explanatory diagram of the tool shape, Fig. 16 is a flow chart of automatic NC data programming, Fig. 17 is an example of drawing during conventional NC machining simulation, Fig. 18 is a perspective view of the final part shape. It is. 11...Automatic programming section, 12...N CfilJ control section, 13...Graphic display device 14...Keyboard, 15.16...Switching unit, SDV...X-Z side view of material, FRV...Final parts Shape X-c Front View Patent Applicant
Agent for FANUC Co., Ltd.
Patent Attorney Chiki Saito Figure 4 Figure 5 Figure 6 ((71(b) Figure 7 ((7) (bI
(C) Figure 8 (O) (Q> (C) Figure 10 Figure 15 Figure 16 Figure 17 Figure 18 October 21, 1985, Incident Display 1986 Patent Application No. 167567 No. 2 Name of invention NC data check method 3 Relationship with the case of the person making the amendment Patent applicant address 3580 Kobaba, Oshinomura, Oshinomura, Nanburu-gun, Yamanashi Prefecture Name (name) Fanuc Corporation Representative Inaba Sukeemon 6 Amendment In order to enlarge the characters in the target drawing, Figure 2, the entire figure is enlarged as shown in the attached sheet.

Claims (3)

[Claims] (1) Dialogue images corresponding to each of the multiple data input steps are displayed on the display screen, and the dialogue images are referred to to determine the shape of the material, the shape of the part obtained by turning and C-axis machining, the machining process, etc. In an NC data check method in which data specifying the tools used, etc. is input, NC data is created using the input data, and the created NC data is then checked, the display screen is displayed in response to a request to check the NC data. The first step is to draw an X-Z side view of the material and the X-C front view of the final part shape.The second step is to execute NC control based on the NC data and monitor the current position of each axis. The third step is to input the current position into the display device at predetermined time intervals, and in the X-Z side view, the drawing position of the tool is moved based on the current values of the X and Z axes of the tool, and the state of the turning process is drawn. In the X-C front view, the fourth step is to move the tool drawing position based on the current X-axis position of the tool and rotate the final part shape based on the current C-axis position to draw the C-axis machining state. An NC characterized by having
How to check data. (2) In the first step, the X-Z side view of the material is filled in and drawn, and in the fourth step, the filled in portion is scraped off according to the movement of the tool during turning processing. NC data check method described in section. (3) storing in advance the correspondence between the tool number and the tool shape diagram in the display device, and inputting the tool number included in the NC data into the display device by executing NC data for tool exchange;
N according to claim (1) or (2), characterized in that the display device has a step of drawing a tool shape diagram at the current position of the tool according to the tool number.
C Data check method.