JPH0547300B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a processing method using a turret punch press, and in particular, to a processing method for a turret punch press that enables continuous processing of multiple punches and non-multiple punches. Regarding the method.

[Description of Prior Art] In the conventional machining method for a turret punch press equipped with an NC device, multiple-piece punching work and non-multiple-piece punching work (non-multiple piece punching work) are separated, and non-multiple piece punching work is normal (default). ), and if you want to take multiple pieces, you can manually input the setting values necessary for this multiple piece taking in MDI (manual data input) mode.

However, this method gives the turret punch press a lot of idle time, resulting in a reduction in process throughput. This reduction in process throughput is especially severe when a turret punch press is used as part of a sheet metal line, and when multi-piece work and non-multi-piece work are mixed. Become.

Therefore, in order to improve the above-mentioned decrease in processing capacity, multiple-piece picking operations and non-multiple-piece picking operations, which are mixed together, are divided into groups, thereby improving efficiency as much as possible. However, in reality, it is difficult to uniformly group work for reasons of management or for the convenience of the entire line, and in the end, it is necessary to mix work that takes multiple pieces and work that does not take many pieces. is the reality.

When constructing an unmanned sheet metal line under FMS,
The above-mentioned decrease in processing capacity is a major problem, and it is desired to improve this problem.

[Objective of the Invention] This invention improves the above-mentioned problems, and in a method for machining a turret punch press that involves both multi-piece punching work and non-multiple piece punching work, manual operation is required to intervene when performing either work. To provide a processing method for a turret punch press that can automatically link both operations without any trouble.

[Structure of the Invention] In order to achieve the above object, the present invention includes an NC program input processing section that inputs an NC program according to the automatic operation mode and checks its format, and an NC program input processing section that imports information of the NC program. an arithmetic processing section that creates axis control data with the arithmetic processing section; an NC control data output processing section that outputs control data for each axis that has been precisely calculated based on the axis control data from the arithmetic processing section to the interpolation section; A punch that punches processed products from a plate material under NC control by an NC device that is equipped with a program input processing section, an arithmetic processing section, and an automatic operation control section that controls the start timing of the process of the NC control data output processing section. As a press processing method, non-multi-piece machining, trial punching, or remaining machining after trial punching is performed at the beginning of a preprogrammed machining program for punching a large number of the processed products from the plate material. A specified program that specifies that the machining to be performed or all machining in multi-piece machining is to be performed continuously is inserted in the NC program input processing section, and the machining program is executed according to the contents specified by this specified program. This is a processing method that performs punching of processed products.

[Description of Embodiments] Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an overall explanatory diagram of a device capable of carrying out the present invention, and FIG. 2 is a block diagram of the device.
FIG. 3 is a module hierarchy diagram of an operating system for operating a numerical control device (hereinafter referred to as an NC device), and FIG. 4 is a relationship diagram of software and data of the NC device.

As shown in FIG. 1, a turret punch press 3 is connected to an NC device 1, and this NC device 1 is operated by obtaining an NC tape 7 created by an automatic programming device 5. In the turret punch press 3, only the mold (punch or die) portion of the 72 station is shown.

As shown in Figure 2, the CPU of the NC device 1
9. ROM11, RAM13 are system bus 15
are interconnected through. Further, this system bus 15 includes a digital input 17, a digital output 19, a programmable controller 21, and an interpolation section 2 formed of a bidirectional RAM.
3. Two serial interfaces 25, 27,
and two parallel interfaces 29, 31
are connected to each other.

The CPU 9 performs overall control of the entire system under the operating system described later. The ROM 11 stores a control program, and the CPU 9 controls the turret punch press in accordance with this program. The RAM 13 stores data during each processing by the CPU 9, and provides this data to the data requesting section when necessary.

The digital input 17 and digital output 19 are connected to a solenoid, a limit switch, etc. via a connector module CM. Note that a photocoupler is used in these signal systems as a noise countermeasure, and the system is completely isolated from the outside.

The interpolation section 23 is configured to operate on the X-axis, Y-axis, turret rotation axis (T-axis), and backlash adjustment axis (C-axis).
This position control module 33 is connected to a servo amplifier 35, respectively. The servo amplifier 35 is connected to a drive motor M for each axis, and a tacho-generator TG and an encoder E are provided in connection with the motor, the feed hack signal of the encoder E is sent to the position control module 33, and the speed signal from the tacho-generator TG is sent to the above-mentioned position control module 33. It is returned to the servo amplifier 35.

The serial interface 25 is connected to a CRT 39 via a CRT and MDi controller 37.
An MDi device 41 is connected. Also, the serial interface 27 includes a panel controller 43.
A control panel 45 is connected via. A tape reader 47 is connected to the parallel interface 29. A bubble memory is connected to the parallel interface 31 via a spare device (not shown), such as a bubble memory controller.

The MDi device 41 can control display data and input other key information. CRT39
Display contents include status display, position display of each axis, execution program display, and alarm display.

The control panel 45 displays the control status, each switch status, etc. using LEDs and the like, and is also capable of serial communication with the CPU 5. tape reader 4
7 inputs the NC program from the paper tape.

Figure 3 shows a hierarchical diagram of the operating system.

The main control unit 49 is an operating system 51
This main control section 49 includes an automatic operation control section 53, an operation state management section 55, and a CRT and MDi.
The data control unit 57 is subordinate thereto. An NC program input processing section 59, an arithmetic processing section 61, and an NC control data output processing section 63 are subordinate to the automatic operation control section 53. The functions of each of these modules will be explained in detail with reference to FIG.

In FIG. 4, the storage section includes an address data table 65 formed in the RAM 13, a block command output queue table 67, a Di, Do image table 69, and an operation control table 71.
In addition, it is made up of multiple data files. The data files include a parameter file 73, a setting data file 75, a program file 77, a pattern storage file 79, and a macro storage file 81.

Each member will be explained with reference to FIG.

The operating system 51 allows the use of high-level languages, making the software more advanced. Each module (process) shown in FIG. 3 operates under this operating system 51 and is scheduled efficiently in real time. In addition, the operating system 51
The flow of control signals between the modules operating below is shown by broken lines as in FIG.

The main control unit 49 is the top-level process, and performs procedures for processing by the operating system, initialization diagnosis of hardware modules, etc., initialization of common tables, NC program files, etc., initialization of the axis control module 33, etc. I do. After the main control unit 49 performs these processes, the automatic operation control unit 53, the operation state control unit 55, and
The three processes of CRT and MDi data control unit 57 are activated.

After startup, the automatic operation control unit 53 enters memory mode,
Controls automatic operation and program check operation in MDi mode and tape mode. Then, a program input processing section 59, an arithmetic processing section 6
1, and the start timing of the process of the NC control data output processing section 63 (after processing input for one block, calculates it, and outputs the result of this calculation).

The operating state control unit 55 is always in the RUN state,
While monitoring the operating status of the NC device or machine, for example, performing Di/Do processing on the Di/Do image table 69, managing the status from the interpolation unit 23, inputting the NC program from the tape reader 47, etc. It controls timely alarm generation and other interrupt processing from the program controller 21.

The CRT and MDi data control unit 57
In addition to controls for displaying self-diagnosis, current position, status, override, alarm, etc.
In conjunction with the parameter data file 73, setting data file 75, and program file 77, edits, displays, and registers NC programs, parameter data, and setting data, and processes 2-block NC program input in MDi mode. I do.

The NC program input processing section 59, which operates under the automatic operation control section 53, inputs the NC program according to each automatic operation mode, and also performs a format check of the NC program. That is, the NC program is loaded one block at a time from the program file in the memory operation mode, or from the tape reader 47 in the tape operation mode, and format checks, command value checks, etc. are carried out according to the operation mode. Thereafter, the information is set in the address data table 65 according to internal processing reasons, and this information is passed to the arithmetic processing section 61. Note that the program display under automatic operation mode is performed by the data control unit 57 of the CRT and MDi described above.
This work is done here separately from the work done at , and is done by sending the execution program to the CRT 39.

The arithmetic processing unit 61 performs coordinate calculations, feed rate calculations, etc., and creates specific axis control data for the interpolation unit 23. That is, axis control data is formed here based on the information taken in from the address data table 65, this axis control data is set in the block command queue table, and then the NC
The control data is passed to the control data output processing section 63. Specifically, G code processing (coarse calculation), coordinate calculation, feed rate calculation, overtravel pre-check, C and T axis (see Figure 2) calculation, auxiliary function (M code)
Processing and multi-piece processing are performed here.

The multi-piece picking process and the non-multiple piece picking process will be explained in detail below in FIG. Only rough calculations are performed here, and pitch calculations etc. are performed in the next NC control data output processing section 63.

The NC control data output processing unit 63 performs nibbling or pitch calculation in a pattern cycle, etc. on the axis control data passed from the calculation processing unit 61 via the block command queue table 67, and performs precise calculations on each axis. The interpolation unit 23
pass it on to Here, in addition to this, dwell processing, auxiliary
(M) code), tool position correction processing, restart processing from a stop state, C-axis (see Fig. 2) backup processing, and counting processing of the number of times the tool is used.

Detailed processing in the case of multiple-piece picking, non-multiple-piece picking, and multiple-piece picking performed under the above-mentioned apparatus will be described below.

FIG. 5 is an explanatory diagram of the NC tape in the case where the configuration of the NC tape is exemplified by the configuration of the program after being processed as described later in this embodiment.
In this embodiment, types such as multiple-piece production or non-multiple-piece production are represented on the NC tape, and an example is shown in which the process is executed in tape operation mode.

As shown in FIG. 5, the aspect of the program after being processed as described later in this embodiment is
To illustrate with the configuration of NC tape, NC tape 7 is as follows:
This is an embodiment in which a block representing a type designation program 85 delimited by (;) is added to the beginning of a machining program 83 for punching a large number of processed products. The type specification program is, for example, S0, S
1, S2, or S3, and the address word S designates the type such as multiple-piece arrangement or non-multiple-piece arrangement.
2 and 3 represent the contents, and data 0
Data 3 indicates that all machining is performed continuously in multi-cavity machining.
Further, data 1 and 2 represent commands for performing trial punching and remaining machining after trial punching.

FIGS. 6 to 8 are explanatory diagrams of the machining command system. The operation preparation command of the machining program 83 is G98, starting from the point (x ₀ , y ₀ ), xp in the X direction,
At a pitch of yp in the Y direction, (nx+1) pieces in the X direction,
It is shown that (ny+1) processing is performed in the Y direction with correction d.

The above correction d is a correction according to the desired processed product without changing the pitches xp and yp. The machining state when d>o is shown in FIG. 7, and the machining state when d<o is shown in FIG. 8 by broken lines.

FIG. 9 shows the NC program input processing section 59 (fourth
(see figure).

At step 903, the type designation program 85 (see FIG. 5) is input from the tape reader 47 shown in FIG.

At step 905, it is determined that the address word is "S", and the process moves to step 907.

Step 907 determines whether the data written in this address word "S" is 0, 1, 2, or 3. If the data is not one of these values, an error is displayed in step 911. step 913
Pause at .

On the other hand, in step 907, the data is 0, 1,
If it is 2 or 3, in step 909,
The setting data is updated to what is specified by these data.

When the setting data is set to "3" in step 909, the machining program 83 shown in FIG. 5 is input. Therefore,
If we exemplify the configuration of the NC tape after the type designation program 85 has been set, the designation program 85 is additionally inserted at the beginning of the machining program 83, as shown in FIG. The machining program 83 is operated by the arithmetic processing section 61, the NC control data output processing section 63, etc. based on the setting data updated as described above, and performs a predetermined continuous multi-piece press machining process. be.

Therefore, the type of machining, such as multiple-piece machining or non-multiple-piece machining, is specified in advance in the sequential machining program, and continuous work can be performed smoothly.

In the above example, even when the same processing is performed continuously, the type is specified for each block. Of course, this is also a good thing. Further, although the above embodiment has shown an example of the tape operation mode, the same applies to the case where the apparatus is operated in the memory operation mode.

[Effects of the Invention] As can be understood from the explanation of the embodiments above, in short, the present invention has the following advantages:
NC program input processing section 5 that inputs the NC program and checks its format.
9, an arithmetic processing unit 61 that takes in the information of the NC program and creates axis control data, and an interpolation unit 23 that calculates control data for each axis precisely based on the axis control data from the arithmetic processing unit 61. NC control data output processing unit 63 to output to the above-mentioned NC
A processed product is machined from a sheet material under NC control by an NC device comprising a program input processing section 59, an arithmetic processing section 61, and an automatic operation control section 53 that controls the start timing of the process of the NC control data output processing section 63. In the processing method of the punch press for punching, non-multi-piece processing S0, trial punching processing S1, or trial punching is performed at the beginning of the processing program 83 programmed in advance to punch a large number of the processed products from the plate material. A designation program 85 is inserted in the NC program input processing unit 59 to designate machining S2 in which the remaining machining is performed after machining, or machining S3 in which all machining in multi-piece machining is performed continuously.
The machining program 83 is executed in accordance with the contents specified by 5 to perform punching of the machined product.

As is clear from the above configuration, in the present invention, the machining program 83 is preprogrammed to punch out a large number of processed products from a plate material. It is capable of punching a large number of processed products.

However, it is not always necessary to punch out a large number of processed products; for example, trial punching may be performed. Therefore, in the present invention, a designation program for specifying the type of machining is automatically inserted at the beginning of the machining program 83, and the machining program 83 is executed according to the contents specified by this designation program. Since this is a processing program for punching processed products, it is also possible to perform trial punching even though it is a processing program for punching a large number of processed products.

[Brief explanation of drawings]

The drawings all show embodiments; FIG. 1 is an overall explanatory diagram of a device that can carry out the present invention, FIG. 2 is a block diagram of the device, and FIG. 3 is an illustration of an operator for operating the numerical control device. Figure 4 is a diagram of the software and data relationships of the NC device, Figure 5 is an explanatory diagram of the NC tape, Figures 6, 7, and 8 are all
An explanatory diagram of the machining command system, FIG. 9 shows a processing flowchart of the NC program input processing section. 7... NC tape, 49... Main control section, 51...
...Operating system, 53...Automatic operation control section, 55...Operating state control section, 57...
CRT and MDi data control section, 59... NC program input processing section, 61... Arithmetic processing section, 63...
...NC control data output processing section, 83...machining program, 85...machining type designation program.

Claims (1)

[Claims] 1 Input the NC program according to the automatic operation mode and check its format.
An NC program input processing unit 59, an arithmetic processing unit 61 that takes in the information of the NC program and creates axis control data, and control for each axis that is precisely calculated based on the axis control data from the arithmetic processing unit 61. An NC control data output processing section 63 that outputs data to the interpolation section 23, and an automatic operation control section 53 that controls the start timing of the processes of the NC program input processing section 59, arithmetic processing section 61, and NC control data output processing section 63. A punch press processing method for punching processed products from a plate material under NC control by an NC device comprising: a processing program programmed in advance for punching a large number of processed products from the plate material; At the beginning of 83,
The specified program 85 that specifies non-multi-piece machining S0, trial punching S1, machining S2 that performs remaining machining after trial punching, or machining S3 that continuously performs all machining in multiple cavities is executed by the NC. A punch press processing method characterized in that the processing program 83 is inserted in a program input processing section 59 and executed according to the contents specified by the specified program 85 to perform punching of a processed product.