JP3580447B2 - NC control method - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an NC control system for a machine tool.
[0002]
[Prior art]
In an NC device that operates with an EIA code (G code), an NC program for processing is described on an NC tape, for example, and a program is sent to the NC device through a tape reader. An NC program is created by an external personal computer or the like and sent to an NC device.
[0003]
[Problems to be solved by the invention]
As described above, in the case of sending the NC program created outside to the NC device, the NC program itself is described on a tape, for example, so that the data transmitted from the external tape reader or personal computer to the NC device is transmitted to the NC device. Is data of a character sequence of EIA codes (G codes) representing characters and numerals (including processed data) of the program. In data indicating such a character, machining data described in the NC program, for example, actual machining data such as a machining allowance in the Y-axis direction and a hole depth in the Z-axis direction is used when machining a certain workpiece. It is extremely difficult to determine whether the value is a reasonable value, because the transmitted character data also includes data representing a program. Further, since the NC program itself is transmitted, there is a problem that the data amount is large and the communication time is long. In addition, when machining data (cutting allowance and various cutting conditions) is changed due to a change in the work, there is a problem that a new program must be created for this, and there is also a problem that work cannot be performed unless the program is familiar with the program. Was.
In the case of using a personal computer externally, a keyboard is generally used for the data input device, and the NC program is often stored on a hard disk or the like. However, if the working environment is close to a processing site with a lot of dust, There is a problem that these devices fail in a short period of time and the reliability of the system is low.
Also, in the conventional NC device, if another NC program is transmitted from outside without stopping the machine controlled by the NC device, the background data that allows the NC device to transmit the NC program during the NC processing is transmitted to the NC device. If an input device is separately required and used, there is a problem that the cost becomes extremely high. If this is not used, there is a problem that the machine to be controlled must be stopped one by one, resulting in poor machining efficiency. In view of these prior arts, the main problem of the present application is that even if the worker does not have knowledge of the NC program, the program can be easily changed, the amount of data communication to the NC device is reduced, and the actual work for the work is not performed. It is an object of the present invention to provide an NC control system which can easily check machining data and has high system reliability. Another object of the present invention is to increase the operability of the machine to be controlled by sending data for the next NC control during machining by the NC device without using a special input device separately. It is an object of the present invention to provide an NC control method that can perform the following. Another object of the present invention is to provide an NC control method in which input of actual machining data is extremely easy.
[0004]
[Means for Solving the Problems]
In order to solve the problem , when performing machining by combining a plurality of basic shape patterns, a general-purpose NC device operating with an EIA code (G code) corresponds to a large number of basic shape patterns, and each basic shape is controlled by a macro program. A general-purpose NC device and a general-purpose programmable controller are provided with a general-purpose NC device and a general-purpose programmable controller provided with a general-purpose NC device. The general-purpose programmable controller is connected to a touch-panel type input display unit that enables information display from the general-purpose programmable controller and input of information from the screen to the general-purpose programmable controller. In the RAM of a general-purpose programmable controller A variable data storage unit for storing the variable data for the actual machining for a number of basic shape pattern to be machined corresponds to the basic shape pattern, a variable of a plurality of basic shape patterns stored in the general purpose programmable controller, prior to processing A transmitting means for transmitting data to the programmable controller on the NC side; and a transmitting means for transmitting variable data of the following basic shape pattern to the programmable controller on the NC side in response to a request from the programmable controller on the NC side. It is provided with a buffer for storing variable data transmitted from a general-purpose programmable controller, and during machining with the variable data in the buffer, it is checked that the variable data in the buffer has been applied to the machining program. Shape pattern The general-purpose NC unit has a control program for operating the control target machine by applying the variable data of the buffer to a corresponding machining program, and has a general-purpose NC program. A check program for checking whether the variable data transmitted from the programmable controller is a value appropriate for work machining is provided .
Further, in claim 2 for other problem solving, general-purpose programmable controller includes a shape pattern storing unit for storing a plurality of basic shape pattern, the basic shape pattern selection instruction from the input display unit, the selected The basic shape pattern is displayed on the screen of the input display means, and dimensions for actual processing are directly input as variable data on the displayed pattern.
In the third aspect , the general-purpose programmable controller may include, for each basic shape pattern, a data conversion that associates a storage position of the variable data in the variable data storage unit corresponding to the basic shape pattern with a storage position of the display input buffer. A table is provided, and each data storage position of the display input buffer corresponds to a display position on the screen of the input display means on a one-to-one basis.
[0005]
[Action]
In the present application, only the actual machining data (such as the cutting depth, the cutting allowance, and the cutting conditions (tool rotation speed, tool number, feed speed, etc.) in the machining workpiece are sent to the general-purpose NC device. Since NC control is performed by applying this to the variable description portion in the corresponding machining program, when machining a registered basic shape pattern, only variable data for the basic shape pattern is given. The NC processing can be easily performed without writing an NC program, and by giving information (width, thickness, length, material, etc.) on the work in advance, these variable data can be used for the work. for processing the easily identifiable and becomes the appropriate value at which whether the check program can prevent processing errors, thereon, NC program that Since the data is not transmitted, the data communication amount is small and communication can be performed in a short time.Moreover, since a large number of variable data is stored in the RAM of the general-purpose programmable controller and the input / output of data and the like is performed by the touch panel, the floppy disk is used. Compared to the case where data is stored on a disk and input / output is performed from a keyboard, the system is more resistant to dust and has higher system reliability.
Also, each variable data of a plurality of basic shape patterns is sent to the buffer on the NC side in advance, and it is confirmed that the variable data in the buffer is applied to the machining program on the NC side during machining, and the next variable data is checked. To a general-purpose programmable controller. Therefore, the exchange of the variable data and the processing by the NC device proceed simultaneously.
According to the second aspect , the basic processing shape is displayed on the screen of the touch panel, and dimensions can be input on the display screen, so that anyone can easily input the dimensions.
According to the third aspect of the present invention, the input is simplified by using a touch panel as the input display means. In the present application, a data conversion table is used which associates a storage position of variable data in a variable data storage unit with a storage position of a display input buffer. In this display input buffer, the data storage position is made to correspond to the display position on the touch panel on a one-to-one basis. Therefore, regardless of the data registration order and the size of the data storage area, the display input buffer simply displays the display input buffer. , A display sequence program can be shared, and data conversion for display and storage is also performed according to the data conversion table. Therefore, there are many different data conversion programs for each basic shape pattern. Not only does it need to be prepared, but also when adding a new basic shape pattern, By preparing the chromatography data conversion table, it is not necessary to change the data conversion program.
[0006]
【Example】
As shown in FIG. 1, the 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 4 (hereinafter, referred to as a general-purpose NC device 3) provided in the general-purpose NC device 3. I / O communication or a general-purpose programmable device connected by a communication cable 5 corresponding to the general-purpose NC device 3 via the NC-side PC 4 for mainly controlling communication). The system includes a controller 6 (hereinafter, general-purpose PC 6) and input display means 8 connected to the general-purpose PC 6 via a communication cable 7 so as to be able to exchange data. The input display means 8 is different from a general combination of a keyboard and a display. In the present application, the input display means 8 displays information from the general-purpose PC 6 on a screen, and inputs information to the general-purpose PC 6 from the screen. Things. A machine tool 2 for machining is shown in FIG. 7 by a plan view. The machine tool 2 is a vertical machining center having a main shaft 2a directed vertically downward, and is arranged in an X-axis direction (work longitudinal direction), a Y-axis direction (work width direction) and a Z-axis direction (vertical direction, as shown in FIG. The main shaft 2a, that is, the tool T, moves in three orthogonal directions (vertical directions). The data creation device includes an input display unit 8 and a general-purpose PC 6.
[0007]
The work handled by the NC control device is, as shown in FIG. 10, left and right vertical frames 201 and 202, upper and lower frames 203 and 204, a horizontal frame 205 or a frame 205 constituting a sash window frame 200. It is a long material such as an upper and lower frame, a left and right vertical frame of a shoji to be fitted in, and the processing shape thereof is provided, for example, in the case of the vertical frame 201, as shown in FIG. The cutouts 201a, 201b, 201c in which the bent pieces 201e, 201e (FIG. 8) of the cross section are removed so that the ends of the upper and lower frames 203, 204 and the end of the horizontal frame 205 fit into each other, and the vertical frame 201. In order to screw the set screw 207 into the screw groove of the upper and lower frames 203 and 204 and the horizontal frame 205, the vertical frame 201 includes a large number of screw holes 206 provided on the wall 201d of the vertical frame 201.
[0008]
In order to machine such a workpiece, the machining shape of the workpiece is classified, and each machining basic shape that can be performed by one tool is grouped together, and some basic shape patterns are stored in the RAM of the general-purpose PC 6. Is stored in the shape pattern storage unit 25. The basic shape pattern is classified into a shape as shown in FIG. 2, drilling, or a slotter process for performing a slotter process on an R portion after processing the patterns 1, 3, 4, 6, 11, and 12. Have been.
[0009]
In the processed portion of such a work, the relative positional relationship between the notch and the screw hole is the same as long as the mating frame material is the same. For this reason, the processing parts that do not change the relative positional relationship are grouped into left and right end processing groups 20 and 30 and an intermediate processing group 40 as shown in FIG. The actual dimensions of some basic shape patterns included in each processing group are defined in an independent coordinate system based on a common origin in 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). These are defined by a coordinate system based on the origin 21 which 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. Patterns 4, 6, 51, and 64 belong to the right end processing group 30. These patterns are local based on a machining origin 21 of the machine and an origin 31 shifted only by coordinates in the longitudinal direction of the workpiece (X-axis direction). The origin 31 is defined in a coordinate system, and is located in a plane including the right end face 200R of the frame material. The intermediate machining group 40 includes patterns 11, 12, 51, and 63, which are also defined in a local coordinate system based on the machining origin 21 of the machine and the origin 41 shifted only in the work longitudinal direction coordinates. It has become. In the present embodiment, the intermediate processing group 40 shows only the left-end reference processing group to which the shift amount SM from the origin 21 of the left-end processing group 20 is given. When there is an intermediate machining group (a square hole and a screw hole like the portion 45 in FIG. 7) to which the shift amount A is given, this is also described in a local coordinate system with another origin 46 as a reference.
[0010]
A control program relating to data input / output shown in FIG. 3 is stored in a RAM in the general-purpose PC 6, and the control program creates processing data for the above-described work. Each control step of the control program indicates a function realizing means. Step S3 is means for inputting data (thickness, width, overall length, etc. of the shape material) common to the shape material, and step S4 is a process for selecting the processing group. When the intermediate processing group 40 is selected by the group selecting means, the origin shift amount SM in the X-axis direction from the machining origin 21 of the machine is input, and also serves as the origin shift amount input means between coordinate systems. . Of course, if there is a right end machining reference group based on the right end of the work in the intermediate machining group, it goes without saying that the origin shift amount A from the origin 41 of the right end coordinate system is input. Step S5 is a processing pattern selecting means for selecting a basic shape pattern included in the selected processing group from the basic shape patterns described above. Step S7 is a dimension input unit for setting an actual machining dimension for the selected basic shape pattern, including cutting conditions and tool selection. These inputs are all performed on the screen of the touch panel 8. Steps S8 and S9 are data storage instructing means for storing where data input from the screen is to be stored in the variable data storage unit in a predetermined storage position with reference to a data conversion table described later. Further, step S14 is a transmitting means for transmitting variable data to be described later for a plurality of processing patterns (here, three patterns) to the NC-side PC 4 prior to processing, and step S15 is to start the processing on the NC side, This is a transmitting means for sending out the machining pattern variable data one by one until the drawing number data is completed in response to a request from the side.
[0011]
In the RAM of the general-purpose PC 6, a plurality of processed data storage units 10 are provided for each product drawing number. As shown in FIG. 5, each machining data storage section 10 stores a figure number data storage section 11 from the top, a common data storage section 12 for the work of the figure number, and which basic shape pattern is included in which machining group. A group management data storage unit 13 that manages and separates 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 this order. Each of the machining group data storage units 14, 15, 16 is composed of a plurality of variable data storage units 17 in which variable data for the basic shape pattern is stored in correspondence with each basic shape pattern.
[0012]
The general-purpose PC 6 includes a display input buffer 50 for exchanging data with the touch panel 8. The data storage positions a, b, c, d, e,... Of the buffer 50 correspond one-to-one 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. In the RAM of the general-purpose PC 6, there is provided a data conversion table 51 indicating the correspondence between the storage position of the buffer 50 and the data storage position in the variable data storage unit 17 described above. In the data conversion table 51, the data stored in the storage position of the buffer 50 from the beginning are stored in order from the head address of the variable data storage unit 17 (the head of the variable data is always set to the pattern type). Whether the data is stored with an appropriate data size (that is, the storage position) is described by a data type code, and is associated with the storage position of the buffer. Therefore, at the time of data input, in step S8 of the flowchart, the data input to a certain position on the screen is stored in the storage position of the buffer 50 corresponding thereto, and the data conversion table 51 is referred to here. Thus, data having a small data size are sequentially stored so as to divide the memory unit (16 bits) of the variable data storage unit 17 into a plurality of units, and the storage area is saved, that is, stored in a form suitable for storing in the RAM. It is supposed to be. Also, when the data stored in this manner is read out, by referring to the data conversion table 51 corresponding to the processing pattern designated as the read-out processing pattern, the variable data storage unit 17 stores Information stored in the variable data storage unit while saving the memory as much as possible, such that the next 4 bits of the first 8-bit machining pattern type data at the start address are the tool number, and the next is the reference data and the group determination data. Is cut out, and the cut out data is stored in a corresponding storage position of the buffer 50 in a format suitable for display. Therefore, even if the structure of the variable data is different, such as the order of the data due to the difference in the shape of the reference shape pattern, the size of the storage area occupied by the data, etc., refer to the data conversion table 51 prepared for each basic shape pattern. As a result, the data is changed between the storage format in the variable storage area and the storage format in the buffer 50, and a large number of programs for such data change are prepared corresponding to 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, it is possible to prepare a table for the added basic shape pattern. In addition, data can be stored and referred to in a new pattern without modifying a data conversion program.
[0013]
Then, the display program included in the control program is described in the display command by using the display position and the display content (data stored in the data storage position of the buffer 50) as parameters. When the display position data indicating the data storage position of the buffer 50 and the storage content are applied to the parameters of the display program, the storage data corresponding to the corresponding position on the screen is displayed. Even if the order of arrangement (data structure) of the variable data is different due to the difference in the shape, the display program can be made completely common.
[0014]
Next, the general-purpose NC device 3 stores, as variable data from the touch pal, the cutting conditions, tool conditions, dimensions required for processing the processing pattern, shift amounts of the origin, etc., corresponding to the respective basic shape patterns. A machining program which is inputted and describes data necessary for performing actual machining as a variable is described as a macro program using an EIM code (G code) by the same number as the basic shape pattern. It is stored in the storage unit 55. Also, in the general-purpose NC unit 3, whether the variable data described and transmitted by the macro program is a value appropriate for processing the work, that is, the Y-axis is determined based on the work width dimension given as the common data. Make sure that the cutting dimension in the direction is not large, the cutting depth in the Z direction is not large relative to the height of the work, and 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 the processing, and if there is data that is inconvenient for the processing, the processing based on the data is stopped to prevent defective products and to alert the worker. I have.
[0015]
A variable data storage buffer 60 is provided in the NC-side PC 4 that mainly performs communication. The storage buffer 60 stores variable data in units of a plurality of machining patterns transmitted from the general-purpose PC 6. The control program for the general-purpose NC device 3 is shown in FIG. Step S21 is a step for determining the presence or absence of a start command, step S22 is a data read step, step S23 is a data check step by the check program, and step S24 is to apply a variable to a corresponding pattern processing program. A step of applying variable data for converting the system into a machine coordinate system, a step S25 is a step of outputting a control command to the machine, and a step S26 is a step of determining the end of machining.
[0016]
FIG. 4B shows a control program of the NC PC 4. A step S27 is a data storage state detecting step for determining whether or not the variable data in the buffer 60 has been reduced by one processing pattern as a result of reading by the general-purpose NC device 3, and a step S28 is performed when the variable pattern data has been reduced by one processing pattern. A data requesting step of requesting the general-purpose PC 6 for processing data for the next processing pattern, and step S29 is a receiving step of receiving data from the general-purpose PC 6. In this application, as described above, the general-purpose NC device 3 refers to the data stored in the variable data storage buffer 60 and controls the machine by the macro program, while the NC-side PC 4 monitors the degree of reduction of the variable data. Since the next data is requested from the general-purpose PC 6, the machine control and the data transfer are performed at the same time, and as a result, the data transfer is smoother than the conventional device in which the machine control is stopped at the time of the data transfer. In addition, since only variable data is sent from the general-purpose PC 6 to the NC device 3, the data amount can be reduced and the transmission time can be reduced as compared with the conventional method of transmitting a macro program.
[0017]
Next, the operation will be described with reference to FIGS. In data input, after step S1 and S2, in step S3, the figure number for the work to be processed and the mold material data (thickness, width, total length, etc.) are input. Next, a processing group is selected. In the work of FIG. 7, there are three of the left end machining group 20, the right end machining group 30, and the intermediate machining group 40, so that in each machining group, a basic shape pattern belonging to the machining group is selected in step S5. For example, in the left end processing group 20, first, pattern 1 is selected, the pattern is displayed on the touch panel 8, data input and display position on the screen are touched, and data is directly input there. At the time of data input, the display screen of the touch panel 8 switches to the keyboard screen, and input is performed from the keyboard screen. In pattern 1, notch dimensions A, B, C, tool No., reference to machining origin 21 of the machine, whether it is not, tool data such as tool diameter and tool type, and cutting (not shown) in each axial direction Cutting conditions such as speed are also input. The dimensions are input with reference to the origin (here, coincides with the machining origin of the machine) 21. Each data input in this way is stored in the corresponding storage position of the input display buffer 50, and referring to the data conversion table 51 of pattern 1, the variable data storage unit for pattern 1 of the left end machining group data storage unit 14 17, 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, and 51) belonging to the left end processing group 20 through step 10 and sequentially stored in the left end processing group data storage unit 14 as shown in FIG. You. Then, after step S11, the same operation is repeated for the remaining processing groups 30 and 40. When the intermediate machining group 40 is selected, the input of the origin shift amount SM from the machining origin 21 of the machine is prompted, and then the dimension input based on the local origin 41 is performed. The origin shift amount SM is also stored in the intermediate machining group data storage unit 15 as variable data. After inputting the variable data of the plurality of basic shape patterns for the plurality of machining groups 20, 30, and 40 for one drawing number, if there is another drawing number input in step S12, the process returns to step S1 to input. repeat.
[0018]
Next, a description will be given of a case where variable data is created for a workpiece that differs only in the longitudinal data of the mold. In step S2, data change is selected, and in step S16, the drawing number of the work which is different from the work to be created only in the longitudinal direction and has the same variable data of the basic shape pattern of the machining group is input from the touch panel 8. Then, the origin shift amount in the longitudinal direction between the machining group described in the local coordinate system and the machining group described in the coordinate system coinciding with the machining origin 21 (here, the left end machining group 20) is changed. Then, a new drawing number is added thereto and added to and stored in the processed data storage unit. As described above, variable data is created for a work that has the same basic shape pattern as the previously stored work and the machining group and also has the same variable data as the work, and only differs in the longitudinal relationship between the machining groups. Sometimes, it is only necessary to read the previous data and change only the origin shift amount in the longitudinal direction with respect to the processing origin 21, and the data change becomes extremely easy.
[0019]
Next, in step S2, data transmission is selected, and in step S13, the figure number of the work to be processed is input. Thereby, the corresponding figure number data is selected from the processed data storage unit, and the common data, group management data, and subsequent processed group data shown in FIG. 5 are read. Taking the figure number data 1 as an example, the processing group data is read out from the beginning of the left end processing group data 20 shown in FIG. 5 in this order from the pattern 1 variable data, the pattern 3 variable data, and the pattern 63 variable data. A set of three pattern variable data of the data is transmitted to the NC-side PC 4. The NC PC 4 receives the data in step S29 of FIG.
[0020]
Then, when the general-purpose NC device 3 is started, the data in the buffer 60 is sequentially read out in step 22 of FIG. Since there is common data such as the total length and width of the work in the buffer 60, a data check as to whether the variable data is an appropriate value is performed in step S23 using these common data. Then, the variable data is applied to the variable description section 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 performs the mechanical control in this way, the NC-side PC 4 determines whether or not the variable data in the buffer 60 has been reduced by one pattern. One variable data is requested from the general-purpose PC 6. In response to this request, the general-purpose PC 6 sends out the next pattern 51 variable data. As described above, the variable patterns are successively sent to the NC-side PC 4 at the same time as the NC device 3 is performing the processing control, so that it is not necessary to stop the processing while waiting for the data as in the related art, and the smooth processing is performed. obtain.
[0021]
Next, when the variable data of the intermediate machining group 40 is sent, the variable data is described in a local coordinate system other than the coordinate system coincident with the machining origin 21, so that the variable data includes the shift amount SM from the origin. Then, in step S24, coordinate conversion from the local coordinate system to the machine coordinate system based on the processing origin is performed. The right end machining group 30 is also described in the local coordinate system with respect to the origin 31. Before machining the right end machining group, the tool is moved to the right end of the workpiece based on the given overall length L. The tool is further moved to the right position, and then moved to the left to bring the tool into contact with the right end face. At this time, the circuit of the tool is electrically closed via the tool, the work, the work table, the machine body, and the spindle head, and the The entire length of the work is detected from the position in the X-axis direction, and the actual dimension of the entire length of the work is applied as the origin shift amount when processing the right end processing group 30. Thus, even if there is some variation in the overall length of the work, the processing reference of the right end processing group 30 is performed based on the right end face 200R of the actual work, so that the cutting depth in the X-axis direction is reliably guaranteed. You. Then, a machine control command is issued in step S25 for these patterns as well, and when all the machining for one drawing number is completed, the machining is completed via step S26. Note that the right end machining group 30 may also convert the local coordinate system to the machine coordinate system by applying the full length L as the origin shift amount in the X-axis direction from the machining origin 21 without measuring the actual dimensions. .
[0022]
【The invention's effect】
As described above, in the present invention, only the actual machining data (such as the cutting depth, the cutting allowance, and the cutting conditions (the number of revolutions of the tool, the tool number, the feed speed, etc.) in the machining workpiece are sent to the general-purpose NC device. This is applied to a variable description portion in a corresponding machining program in a general-purpose NC device to perform NC control. Therefore, it is possible to change a variable data only based on a basic shape pattern without describing an NC program. In addition, since the general-purpose NC device has a check program for checking whether the variable data transmitted from the general-purpose programmable controller is a value appropriate for the workpiece processing, information on the processed workpiece (width) is provided. , Thickness, length, material, etc.) to determine whether these variable data are reasonable values for processing the workpiece. Can be easily identified, 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, and a large number of variable data are stored in the RAM of a general-purpose PC. In addition, since input and output of data and the like are performed by a touch panel, a system that is stored in a floppy disk or the like, is resistant to dust, is less likely to malfunction, and has higher reliability than a case where input and output are performed from a keyboard can be provided.
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 it is confirmed that the variable data in the buffer is applied to the processing program on the NC side during the processing. Of the variable data is requested from the general-purpose PC, so that the transmission and reception of the variable data and the processing by the NC device can be performed without using a special device for inputting using the background of the NC device as in the related art. NC machining can be performed without stopping the machine to be controlled at the same time. Further, in the present application, since the basic processing 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 the dimensions.
Also, in the present application, even if the input is simplified by using a touch panel as the input display means, regardless of the data registration order and the size of the data storage area, at the time of display, it is merely displayed according to the display input buffer. Therefore, a sequence program for display can be shared, and data conversion for display and storage is performed according to the data conversion table. Therefore, it is not necessary to prepare many different data conversion programs for each basic shape pattern. There are advantages.
[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 the 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 an operation of a data conversion table.
FIG. 7 is a diagram illustrating another of a work to be processed, a processing machine, a coordinate relationship, and a processing group.
FIG. 8 is a VIII view of FIG. 7;
FIG. 9 is a IX view of FIG. X;
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 processing data storage units 14, 15, 16 group data storage unit 17 variable data storage unit 25 shape pattern storage Unit 50 input display buffer 51 data conversion table 55 machining program storage unit 56 check program 60 variable data storage buffer

Claims (3)

When processing by combining a plurality of basic shape patterns, a general-purpose NC device that operates with an EIA code (G code) can process a large number of basic shape patterns using a macro program. A machining program storage unit for storing a plurality of machining programs described including necessary variables is provided, so that data can be exchanged between the general-purpose NC device and the general-purpose programmable controller via an NC-side programmable controller provided in the general-purpose NC device. The general-purpose programmable controller is connected to a touch-panel-type input display unit that enables the display of information from the general-purpose programmable controller and the input of information from the screen to the general-purpose programmable controller. There are many to process And variable data storage unit corresponding to stored basic shape pattern variable data for the actual processing to the basic shape pattern, the variable data of a plurality of basic shape patterns stored in the general purpose programmable controller, prior to the processing of the NC side of the A transmission means for transmitting to the programmable controller and a transmission means for transmitting variable data of the following basic shape pattern to the programmable controller on the NC side in response to a request from the programmable controller on the NC side, wherein the programmable controller on the NC side is transmitted from the general-purpose programmable controller. A buffer for storing the transmitted variable data is provided, and during processing by the variable data in the buffer, it is checked that the variable data in the buffer is applied to the processing program, and the variable data of the next basic shape pattern is checked. The general-purpose NC device has a control program for requesting a general-purpose programmable controller, and the general-purpose NC device has a control program for operating the controlled machine by applying the variable data of the buffer to a corresponding machining program and transmitted from the general-purpose programmable controller. An NC control method, characterized in that a check program for checking whether or not the variable data obtained is a value appropriate for workpiece machining is provided . The general-purpose programmable controller includes a shape pattern storage unit that stores a plurality of basic shape patterns, and displays the selected basic shape pattern on a screen of the input display means according to a basic shape pattern selection command from the input display means. 2. The NC control method according to claim 1, wherein dimensions for actual machining are directly input as variable data on the set pattern. The general-purpose programmable controller includes, for each basic shape pattern, a data conversion table that associates 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. 3. The NC control method according to claim 2, wherein each data storage position of the display input buffer is in one-to-one correspondence with a display position on the screen of said input display means.

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