JPH0916236A - Nc control system - Google Patents

Abstract

PURPOSE: To provide an NC control system which makes it easy to modify and prepare a machining program and to check machining data and is small in the amount of transmitted data and high in reliability. CONSTITUTION: A general programmable controller 6 and a general NC device 3 are connected by a communication cable 5 through an NC-side programmable controller 4, variable data by basic shape patterns which are inputted from a touch panel 8 and stored in the machining data storage part 10 of the RAM of the general programmable controller 6 are transmitted to the general NC device 3, and the variable data are applied to variable description parts of the machining program for the patterns described previously in the general NC device 3 by a macroprogram corresponding to the basic shape patterns to bring a machine tool under NC control.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to NC for machine tools.
Related to the control method.

[0002]

2. Description of the Related Art N operating with EIA code (G code)
In the C device, as a program to be given from the outside, for example, a NC program for processing is written on an NC tape and is sent to the NC device by a tape reader, or the NC program for processing is supplied to an external personal computer or the like. There is a device which is created by the above and is sent to the NC device.

[0003]

As described above, in the case of sending the NC program created externally to the NC device, since the NC program itself is written on, for example, a tape, an external tape reader or The data transmitted from the personal computer to the NC device is the EIA code (G
Code) character enumeration data. In the data indicating such a character, the machining data described in the NC program, for example, the cutting allowance in the Y-axis direction, Z
It is necessary to determine whether the actual machining data such as the axial hole depth is a proper value when machining a certain work, because the transmitted character data also includes the data representing the program. It is extremely difficult because Further, since the NC program itself is transmitted, there is a problem that the amount of data is large and the communication time becomes long. In addition, when the machining data (cutting allowance and various cutting conditions) is changed due to the change of the work, there is a problem that a new program has to be created, and there is a problem that the work cannot be performed unless the user is familiar with the program. It was Further, in the case of using a personal computer externally, a keyboard is generally used as a data input device, and the NC program is often stored in a hard disk or the like, but if the working environment is close to a dusty processing site, There is a problem in that these devices fail in a short period of time and the reliability of the system is low. In addition, in the conventional NC device, if another NC program is transmitted from the outside without stopping the machine controlled by the NC device, the background data that enables the NC program to be transmitted to the NC device during the NC machining. There is a problem that an additional input device is required, and if this is used, the cost becomes extremely high. Further, if this is not used, the machine to be controlled must be stopped one by one, resulting in poor machining efficiency. In view of these conventional techniques, the main problem of the present application is that the program can be easily changed even if the operator does not have knowledge of the NC program, the amount of data communication to the NC device is reduced, and the actual work is performed. NC with easy processing data check and high system reliability
To provide a control method. Another object of the present application is to increase the mobility of the controlled machine by sending data for the next NC control even during machining by the NC device without using a special input device. N that can
It is to provide a C control method. Another object of the present application is to provide an NC control method in which it is extremely easy to input actual machining data.

[0004]

[Means for Solving the Problems] In order to solve the main problems, when machining a plurality of basic shape patterns in combination,
General-purpose NC device that operates with EIA code (G code),
A machining program storage unit is provided for storing a plurality of machining programs corresponding to a large number of basic shape patterns and including variables necessary for machining each basic shape pattern by a macro program. Connect to a programmable controller to exchange data,
The general-purpose programmable controller is connected to a screen display of information from the general-purpose programmable controller and a touch panel type input display means that enables input of information from the screen to the general-purpose programmable controller. A variable data storage unit is provided for storing variable data for actual machining corresponding to a large number of basic shape patterns to be machined in correspondence with the basic shape pattern, and the variable data of the basic shape pattern stored in the general-purpose programmable controller is used for the general-purpose NC device. The general-purpose NC device applies the variable data to a corresponding machining program to operate the controlled machine. Further, in order to solve another problem, claim 2
Then, before processing with the general-purpose NC device, the variable data of a plurality of basic shape patterns stored in the general-purpose programmable controller is sent to the general-purpose NC device and stored in the buffer, and the general-purpose NC device uses the variable data of the buffer. During machining, it checks that the variable data in the buffer has been applied to the machining program and requests the variable data of the next basic shape pattern to the general-purpose programmable controller. It is characterized in that the data is transmitted to the buffer of the general-purpose NC device. In order to solve another problem, according to claim 3, the general-purpose programmable controller includes a shape pattern storage unit that stores a plurality of basic shape patterns, and the basic pattern selected by a basic shape pattern selection command from the input display means. It is characterized in that the shape pattern is displayed on the screen of the input display means, and the dimensions for actual machining are directly input as variable data on the displayed pattern. Further, in claim 4, the general-purpose programmable controller performs, for each basic shape pattern, data conversion for associating the storage position of the variable data in the variable data storage unit corresponding to the basic shape pattern with the storage position of the display input buffer. A table is provided, and each data storage position of the display input buffer is in one-to-one correspondence with the display position on the screen of the input display means.

[0005]

In the present application, only the actual machining data (such as the cutting depth, the machining allowance, etc.) of the machined work and the cutting conditions (tool rotation speed, tool number, feed speed, etc.) are used for general purpose NC.
When the registered basic shape pattern is machined, the general NC machine is applied to the variable description part in the corresponding machining program to perform NC control. By giving variable data for the basic shape pattern, NC machining can be easily executed without writing an NC program. Then, by giving information (width, thickness, length, material, etc.) related to the workpiece in advance, it is easy to determine whether these variable data are appropriate values for machining the workpiece. It is possible to prevent processing errors, and since the NC program itself is not transmitted, the amount of data communication is small and communication can be performed in a short time. In addition, a large number of variable data are stored in the RAM of the general-purpose programmable controller, and since input / output of data etc. is performed with the touch panel, it is stored in a floppy disk etc. Strong and reliable system. In claim 2, each variable data of a plurality of basic shape patterns is sent in advance to the NC side buffer and the NC is processed during machining.
The side confirms that the variable data in the buffer has been applied to the machining program, and requests the next variable data from the general-purpose programmable controller. Therefore, the exchange of variable data and the processing by the NC device simultaneously proceed. In claim 3, the basic machining shape is displayed on the screen of the touch panel,
The dimensions can be entered on the display screen, making it easy for anyone to enter. According to a fourth aspect of the present invention, in the present application in which a touch panel is used as the input display means to simplify the input, a data conversion table that associates the storage position of the variable data in the variable data storage unit with the storage position of the display input buffer is adopted. However, since this display input buffer has a one-to-one correspondence between the data storage position and the display position on the touch panel, regardless of the data registration order or the size of the data storage area, the display input buffer is simply displayed. Since it is only necessary to display in accordance with the above, it is possible to use a common sequence program for display, and since data conversion for display and storage is also performed according to the data conversion table, there are many different data conversion programs for each basic shape pattern. In addition to not having to prepare, even when adding a new basic shape pattern, the basic shape pattern is supported By preparing the chromatography data conversion table, it is not necessary to change the data conversion program.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an NC control device 1 includes a general-purpose NC device 3 that directly controls a machine tool 2 and operates with an EIA code (G code), and a programmable controller provided in the general-purpose NC device 3. 4 (hereinafter, NC side PC4:
A general-purpose programmable controller 6 (hereinafter referred to as a general-purpose programmable controller 6 connected to the general-purpose NC device 3 via I / O communication or a communication cable 5 conforming thereto so as to exchange data, commands, etc. , A general-purpose PC6),
It comprises a general-purpose PC 6 and an input display means 8 connected via a communication cable 7 so that data can be exchanged. Unlike the combination of a general keyboard and a display, this input display means 8 is a touch panel type that can display information from the general-purpose PC 6 on the screen and can perform input to the general-purpose PC 6 from the screen in the present application. It is a thing. The machine tool 2 for machining is shown in plan view in FIG. This machine tool 2 is a vertical machining center in which a main shaft 2a faces vertically downward, and has an X-axis direction (workpiece longitudinal direction), a Y-axis direction (workpiece width direction), and a Z-axis direction (vertical direction, in FIG. 7). The main shaft 2a, that is, the tool T moves in three orthogonal directions (vertical direction). The data creation device comprises an input display means 8 and a general-purpose PC 6.

Workpieces handled by this NC control device are framed as shown in FIG. 10 to form the sash window frame 200. The left and right vertical frames 201 and 202, and the upper and lower frames 203 and 20.
4, a long frame such as the horizontal frame 205 or the upper and lower frames of the shoji that are fitted in the window frame 200, the left and right vertical frames,
The processed shape will be explained, for example, with respect to the vertical frame 201, as shown in FIG. Cutouts 201a, 201b, 201c in which the bent piece portions 201e, 201e (FIG. 8) are removed, and the vertical frame 2
In order to screw the setscrews 207 into the screw grooves of the upper and lower frames 203, 204 and the horizontal frame 205 via 01, it is composed of a large number of screw holes 206 provided in the wall portion 201d of the vertical frame 201.

In order to machine such a work, the machining shapes of the work are classified, and the basic shapes of the machining that can be performed by one tool are grouped together, and a general-purpose PC 6 is provided as several basic shape patterns. It is stored in the shape pattern storage unit 25 in the RAM. The basic shape pattern is a shape, a hole, or patterns 1, 3, 3 as shown in FIG.
After the machining of 4, 6, 11, and 12, the slots are classified into the slotter machining for performing the slotter machining on the R portion.

In the machined portion of such a work, the relative positional relationship between the notch and the screw hole is the same as long as the frame material of the mating frame is the same. Therefore, as shown in FIG. 7, the machining parts having a relative positional relationship that is not changed are grouped into left and right end machining groups 20 and 30 and an intermediate machining group 40. The actual dimensions for some basic shape patterns included in each processing group are defined by independent coordinate systems with the origin common to each processing group. That is, in the work of FIG. 7, the basic shape patterns belonging to the left end processing group 20 are pattern 1 (upper cutout), pattern 3 (lower cutout), pattern 51 (slotter processing), and pattern 63 (drilling). Yes, these are defined by a coordinate system based on an origin 21 that coincides with the machining origin of the machine, and the machining origin 21 of the machine is located in a plane including the left end face 200L of the frame material. Further, patterns 4, 6, 51, 64 belong to the right end machining group 30, and these are local with respect to an origin 31 obtained by shifting only the machining origin 21 of the machine and the coordinate in the workpiece longitudinal direction (X-axis direction). Defined in the coordinate system,
The origin 31 is located in the plane including the right end surface 200R of the frame material. Further, the intermediate processing group 40 has the pattern 1
1, 12, 51, 63 are also included, and these are also the origin 41 of the machine, which is the machining origin 21 and the work longitudinal coordinate.
Is defined in the local coordinate system based on. In the present embodiment, the intermediate machining group 40 shows only the left end reference machining group to which the shift amount SM from the origin 21 of the left end machining group 20 is given, but in addition to this, from the origin 31 of the right end machining group 30. Shift amount A
When there is an intermediate machining group (a square hole portion such as the portion 45 in FIG. 7 and a screw hole) to which is given, this is also described in a local coordinate system with another origin 46 as a reference.

A control program relating to the input / output of data shown in FIG. 3 is stored in the RAM in the general-purpose PC 6,
With this control program, processing data for the above-mentioned work is created. Each control step of the control program indicates a function realizing means, and step S3
Is a means for inputting common data (thickness, width, total length, etc.) of the mold material, and step S4 is a machining group selecting means for selecting the machining group. When the intermediate machining group 40 is selected, machining of the machine is performed. The origin shift amount SM in the X-axis direction from the origin 21 is input, and it also serves as an origin shift amount input means between coordinate systems. Of course, if the intermediate processing group has the right end processing reference group with the right end of the work as a reference, the origin shift amount A from the origin 41 of the coordinate system at the right end is input. Further, step S5 is a processing pattern selection means,
It is a means for selecting a basic shape pattern included in the selected processing group from the above-mentioned basic shape patterns. Step S7 is a dimension input means for setting the actual machining dimension including the cutting condition and the tool selection for the selected basic shape pattern. All of these inputs are performed on the screen of the touch panel 8. Further, steps S8 and S9 are data storage command means for referring to a data conversion table, which will be described later, as to where in the variable data storage section the data input from the screen is stored, and storing the data in a predetermined storage position. Further, step S14 is a transmission means for sending variable data, which will be described later, for a plurality of processing patterns (here, three patterns) to the PC 4 on the NC side prior to the processing, and step S15 is for starting NC processing on the NC side and then executing NC. It is a transmission means for transmitting the machining pattern variable data one pattern at a time until the drawing number data ends, in response to a request from the side.

In the RAM of the general-purpose PC 6, a plurality of processed data storage units 10 for each product drawing number are provided. As shown in FIG. 5, each machining data storage unit 10 includes a drawing number data storage unit 11, a common data storage unit 12 for the work of the drawing number, which machining group contains which basic shape pattern, as shown in FIG. A group management data storage unit 13 that manages and delimits processing groups, a left end processing group data storage unit 14, an intermediate processing group data storage unit 15, and a right end processing data storage unit 16 are arranged in order. Each processing group data storage unit 14, 15, 16 is composed of a plurality of variable data storage units 17 that store variable data for the basic shape pattern in association with each basic shape pattern.

The general-purpose PC 6 has a display input buffer 50 for exchanging data with the touch panel 8. A large number of data storage positions a, b, c, d, e ... Of the buffer 50 are in one-to-one correspondence with dimensions for various basic shape patterns displayed on the touch panel 8, input of various data, and display positions. The data storage position is data indicating the display position. Also, a general-purpose PC
A data conversion table 51 showing the correspondence relationship between the storage position of the buffer 50 and the data storage position in the variable data storage unit 17 is provided in the RAM 6 of FIG.
In the data conversion table 51, the data stored from the beginning in the storage position of the buffer 50 is stored in the variable data storage unit 17
From the beginning address (the beginning of the variable data is always set to the pattern type), the data size to be stored (that is, the storage position) is described by the data type code and stored in the buffer. It is associated with the storage location. Therefore, at the time of data input, the data input at a certain position on the screen in step S8 of the flowchart is stored in the corresponding storage position of the buffer 50, and the data conversion table 51 is referred to here. Thus, the data having a small data size is sequentially stored so as to divide the memory unit (16 bits) of the variable data storage unit 17 into a plurality of sections, thereby saving the storage area, that is, R
It is adapted to be stored in a form suitable for storage in the AM. Further, even when the data stored in this way is read out, the data conversion table 5 corresponding to the pattern to be read depends on which pattern is the processed pattern.
By referring to 1, the variable data is stored such that the next 4 bits of the machining pattern type data of the first 8 bits of the head address of the variable data storage unit 17 are the tool number, the next is the reference and group discrimination data. The stored information is cut out by saving the memory in the storage unit as much as possible, and the cut out data is stored in the corresponding storage position of the buffer 50 in a format suitable for display. Therefore, the data conversion table 51 prepared for each basic shape pattern should be referred to even if the structure of variable data is different, such as the arrangement order of data due to the difference in the shape of the reference shape pattern, the size of the storage area occupied by the data, and the like. As a result, data is changed between the storage format in the variable storage area and the storage format in the buffer 50. Therefore, a large number of programs for such data modification are prepared for each basic shape pattern. do not have to. The data change table 51 can be rewritten by the maintenance personal computer 52 shown in FIG. 1, so that even if a new basic shape pattern is added, a table for the added basic shape pattern can be prepared. , Data can be stored and referenced by a new pattern without modifying the program for data conversion.

Then, the display program included in the control program is described in the display command with the display position and the display content (data stored in the data storage position of the buffer 50) as parameters, so that the buffer 50 starts from the beginning. When the display position data indicated by the data storage position of the buffer 50 and the stored contents are applied to the parameters of the display program while reading sequentially, the stored data corresponding to the corresponding position on the screen is displayed. Even if the arrangement order (data structure) of the variable data is different due to the difference in the shapes of the basic shape patterns, the display programs can be made completely common.

Next, in the general-purpose NC device 3, corresponding to each of the basic shape patterns, cutting conditions, tool conditions, dimensions required to process the machining pattern, shift amount of the origin, etc. The machining program that is input as variable data and describes the data necessary for actual machining as variables has the same number as the basic shape pattern.
It is described as a macro program using IM code (G code), and these are stored in the machining program storage unit 55. Further, in the general-purpose NC device 3, whether the variable data described and transmitted by the macro program is a proper value for machining the work, that is, the Y-axis from the work width dimension given as common data Whether the depth of cut in the direction is large, the cutting depth in the Z direction is not large relative to the height of the work, or the pitch of the screw holes does not exceed the work width. A data check program 56 is provided. This determination is performed prior to processing, and if there is any data that is inconvenient for processing, the processing is stopped based on that data to prevent defective products and to alert the operator. There is.

A variable data storage buffer 60 is provided in the NC side PC 4 which mainly controls communication. The storage buffer 60 stores variable data in units of a plurality of processing patterns transmitted from the general-purpose PC 6. The control program of the general-purpose NC device 3 is shown in FIG. Step S21 is a step of determining the presence / absence of a start command, Step 2
2 is a data reading step, step 23 is a data checking step by the checking program, step S
24 is a step of applying variables to the corresponding pattern processing program, and if necessary, step of applying variable data for converting the local coordinate system to the machine coordinate system, step 25 is a step of outputting a control command to the machine, and step 26 is processing. This is an end determination step.

The control program of the NC side PC4 is shown in FIG.
(B). Step S27 is a data storage state detection step of determining whether or not the variable data in the buffer 60 has been reduced by one machining pattern as a result of being read by the general-purpose NC device 3, and step S28 is when one machining pattern is reduced. , A data request step for issuing a request for processing data for the next processing pattern to the general-purpose PC 6, step S2
Reference numeral 9 is a receiving step for receiving data from the general-purpose PC 6. In the present application, as described above, the general-purpose NC device 3 refers to the data stored in the variable data storage buffer 60,
While controlling the machine by the macro program, the NC side PC 4 requests the next data from the general purpose PC 6 while checking the reduction of the variable data, so the machine control and the data transfer are performed at the same time, and as a result, Compared to conventional devices that stop machine control when transferring data,
Since data is smoothly transferred and only the variable data is sent from the general-purpose PC 6 to the NC device 3, the amount of data can be reduced and the transfer time can be reduced as compared with the conventional method of transferring a macro program. Is shortened.

Next, the operation will be described with reference to FIGS. In data input, through steps S1 and S2, step S
The drawing number and the mold material data (thickness,
Width, total length, etc.). Next, a processing group is selected. Since there are three left end machining groups 20, right end machining groups 30, and intermediate machining groups 40 in the work of FIG. 7, a basic shape pattern belonging to the machining group is selected in step S5 in each machining group. For example, in the left end processing group 20, first, the pattern 1 is selected, the pattern is displayed on the touch panel 8, the data input and display position on the screen are touched, and the data is directly input thereto. At the time of data input, the display screen of the touch panel 8 is switched to the keyboard screen, and the input is performed from the keyboard screen. In the pattern 1, the notch dimensions A, B, C, the tool No, the reference for the machining origin 21 of the machine, whether it is not, tool data such as the tool diameter and the tool type, and cutting in each axial direction (not shown). Cutting conditions such as speed are also entered. The dimensions are input with an origin (here, coincident with the machining origin of the machine) 21 as a reference. Each data thus input is stored in the corresponding storage position of the input display buffer 50, and with reference to the data conversion table 51 of the pattern 1, the variable data storage unit for the pattern 1 of the left end processing group data storage unit 14 is stored. 17
First, the data format is changed to a format suitable for data storage, and the data is sequentially stored as described above. Data is similarly input to other processing patterns (patterns 3, 63, 51) belonging to the left end processing group 20 and stored in the left end processing group data storage unit 14 in order as shown in FIG. It Then, through step S11, the same work is repeated for the remaining processing groups 30 and 40. When selecting the intermediate machining group 40, the input of the origin shift amount SM from the machining origin 21 of the machine is prompted,
Then, dimension input is performed with the local origin 41 as a reference. This origin shift amount SM is also stored in the intermediate machining group data storage unit 15 as variable data. Thus, a plurality of processing groups 20, 3 for one drawing number
After inputting the variable data of a plurality of basic shape patterns for 0 and 40, if there is another drawing number input in step S12, the process returns to step S1 to repeat the input.

Next, a case will be described in which variable data is created for workpieces that differ only in the longitudinal data of the mold material. In step S2, the data change is selected, and in step S16, the drawing number of the work having the same variable data of the basic shape pattern of the machining group, which differs from the work to be created only in the longitudinal direction, is input from the touch panel 8. Then, the machining group described in the local coordinate system and the machining group described in the coordinate system that coincides with the machining origin 21 (here, the leftmost machining group 2
The origin shift amount in the longitudinal direction between 0) is changed, and then a new drawing number is added and added and stored in the processed data storage unit. In this way, the variable data is created for a workpiece that has the same basic shape pattern as the previously stored workpiece and machining group, and has the same variable data, and only the longitudinal relationship between the machining groups is different. Sometimes, it is only necessary to read out the previous data and change only the origin shift amount in the longitudinal direction with respect to the machining origin 21, which makes the data change extremely easy.

Next, in step S2, data transmission is selected, and in step S13, the drawing number of the work to be processed is input. As a result, the corresponding drawing number data is selected from the processed data storage unit, and the common data shown in FIG. 5, the group management data, and the subsequent processed group data are read. Taking the drawing number data 1 as an example, the processing group data is read out from the left end processing group data 20 shown in FIG. 5 in this order from the head of the pattern 1 variable data, the pattern 3 variable data, and the pattern 63 variable. Of data,
The set of three pattern variable data is transmitted to the PC 4 on the NC side. The NC-side PC 4 performs step S in FIG.
The data is received at 29 and stored later in the buffer 60.

When the general-purpose NC device 3 is activated,
In step 22 of FIG. 4A, the data in the buffer 60 is sequentially read. Since there is common data such as the total length and width of the work in the buffer 60, a data check is performed in step S23 using such common data to determine whether or not the variable data has an appropriate value. Then, the variable data is applied to the variable description part of the machining pattern program corresponding to the pattern. Then, a machine control command is issued in step S25 for each pattern. While the NC device 3 is performing the machine control in this way, the NC side PC 4 determines whether or not the variable data in the buffer 60 has decreased by one pattern, and if the variable data has decreased by one, the next pattern Request one variable data from the general-purpose PC 6. In response to this request, the general-purpose PC 6 sends the next variable data for the pattern 51. In this way, the NC device 3 is performing the machining control and at the same time, the variable patterns are sequentially changed to NC.
Since the data is sent to the side PC 4, it is not necessary to stop the processing while waiting for data as in the conventional case, and smooth processing can be performed.

Next, when the variable data of the intermediate machining group 40 is sent, since it is described in the local coordinate system other than the coordinate system that coincides with the machining origin 21, the variable data has a shift amount from the origin. SM is also taken into consideration, and in step S24, coordinate conversion from the local coordinate system to the machine coordinate system with the machining origin as a reference is performed. The right end machining group 30 is also described in the local coordinate system with the origin 31 as a reference, but before machining the right end machining group,
Based on the given total length L, the tool is moved further to the right side position from the right end of the work, and then moved to the left to bring the tool into contact with the right end face. At this time, the tool, work, work table, machine body, The circuit which is electrically closed via the spindle head detects the total length of the work from the position of the tool in the X-axis direction, and the actual size of the total length of the work is applied as the origin shift amount during the machining of the right end machining group 30. As a result, even if there is some variation in the total length of the work, the processing standard of the right end processing group 30 is the right end surface 20 of the actual work.
Since it is performed based on 0R, the depth of cut in the X-axis direction is surely guaranteed. Then, for these patterns, a machine control command is issued in step S25, and when all the machining for one drawing number is completed, step S2
The processing is completed through 6. In addition, the right end processing group 30
Alternatively, the total length L may be applied as the origin shift amount in the X-axis direction from the machining origin 21 without measuring the actual dimension, and conversion from the local coordinate system to the machine coordinate system may be performed.

[0022]

As described above, according to the present invention, only the actual machining data (such as the cutting depth, the machining allowance, etc.) and the cutting conditions (the tool rotation speed, the tool number, the feed rate, etc.) in the machined work are used for general purpose. Since it was sent to the NC device and the general NC device applied this to the variable description part in the corresponding machining program for NC control, it is only necessary to change the variable data without writing the NC program. Machining based on the basic shape pattern is possible.Also, by giving information (width, thickness, length, material, etc.) related to the machined work, these variable data can be used as appropriate values to machine the work. It becomes possible to easily determine whether or not
Processing errors can be prevented, and since the NC program itself is not transmitted, the amount of data communication is small and communication can be performed in a short time. In addition, a large number of variable data are stored in the RAM of a general-purpose PC, and input / output of data etc. is performed by a touch panel, so it is more resistant to dust than when stored in a floppy disk or the like and input / output is performed from a keyboard. It is possible to provide a highly reliable system that is hard to break down. Further, in the present application, each variable data of a plurality of basic shape patterns is sent to the buffer on the NC side in advance, and during machining, it is confirmed that the variable data in the buffer has been applied to the machining program on the NC side. Since the general-purpose PC is required to request the variable data of the above, the exchange of the variable data and the processing by the NC device can be performed without using a special device for inputting by using the background of the NC device as in the past. It is possible to proceed at the same time, and NC machining can be performed without stopping the controlled machine. Further, in the present application, since the basic machining shape is displayed on the screen of the touch panel and the dimension can be input on the display screen, there is an advantage that anyone can easily input it. Further, in the present application, even if the input is made simple by using the touch panel as the input display means, regardless of the order of data registration or the size of the data storage area,
At the time of display, it is only necessary to display in accordance with the display input buffer, so the sequence program for display can be shared, and since the data conversion for display and storage is also performed according to the data conversion table, it is possible to The advantage is that it is not necessary to prepare many different data conversion programs.

[Brief description of the drawings]

FIG. 1 is an overall block diagram of an NC control device.

FIG. 2 is an explanatory diagram of a basic shape pattern.

FIG. 3 is a control flowchart of a general-purpose PC device.

FIG. 4 is a control flowchart of a general-purpose NC device and an NC-side PC.

FIG. 5 is a diagram showing a storage structure of variable data for each drawing number in a processed data storage unit.

FIG. 6 is an explanatory diagram of the operation of a data conversion table.

FIG. 7 is a diagram showing a machining work, a machining machine, coordinate relationships, and machining groups.

8 is a view taken along line VIII of FIG. 7. FIG.

9 is a view taken along line IX in FIG.

FIG. 10 is a front view of a sash window frame.

[Explanation of symbols]

2 machine tool, 3 general-purpose NC device 4, NC-side programmable controller, 5, 7 communication cable 6 general-purpose programmable controller 8 input display means 10 machining data storage unit 14, 15, 16 group data storage unit 17 variable data storage unit 25 shape pattern storage Part 50 Input display buffer 51 Data conversion table 55 Machining program storage unit 56 Check program 60 Variable data storage buffer

Claims (4)

[Claims] 1. When processing a plurality of basic shape patterns in combination, a general-purpose NC device that operates with an EIA code (G code) is compatible with a large number of basic shape patterns, and each basic shape pattern is processed by a macro program. Is provided with a machining program storage section for storing a plurality of machining programs described including variables necessary for machining.
A C-device and a general-purpose programmable controller are connected so that data can be exchanged, and the general-purpose programmable controller has a touch-panel type that enables screen display of information from the general-purpose programmable controller and input of information from the screen to the general-purpose programmable controller. RAM of general-purpose programmable controller connected to input display means
In the inside, a variable data storage section for storing variable data for actual machining for a large number of basic shape patterns to be machined corresponding to the basic shape pattern is provided, and variable data of the basic shape pattern stored in the general-purpose programmable controller is stored. An NC control method characterized by transmitting the data to a general-purpose NC device, and applying the variable data to the corresponding machining program in the general-purpose NC device to operate the controlled machine. 2. Prior to processing by a general-purpose NC device, variable data of a plurality of basic shape patterns stored in a general-purpose programmable controller is transmitted to the general-purpose NC device and stored in a buffer, and the general-purpose NC device stores its buffer data. During machining with the variable data, it checks that the variable data in the buffer has been applied to the machining program and requests the variable data of the next basic shape pattern to the general-purpose programmable controller. 2. The NC control method according to claim 1, wherein the variable data of the pattern is transmitted to a buffer of the general-purpose NC device. 3. A general-purpose programmable controller includes a shape pattern storage unit for storing a plurality of basic shape patterns, and the selected basic shape pattern is displayed on the screen of the input display means by a basic shape pattern selection command from the input display means. 3. The NC control system according to claim 1, wherein the NC pattern is displayed, and the dimensions for actual machining are directly input as variable data on the displayed pattern. 4. The general-purpose programmable controller, for each basic shape pattern, a storage position of variable data in a variable data storage unit corresponding to the basic shape pattern,
A data conversion table that correlates the storage positions of the display input buffer is provided, and each data storage position of the display input buffer is in one-to-one correspondence with the display position on the screen of the input display means. The NC control system according to claim 3, which is characterized in that.