JP2773926B2 - Turret punch press controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a control device for a turret punch press.

(Prior art) As is well known, a turret punch press has a mold mounting station on which a large number of molds can be mounted on a turret, and an NC with an arbitrary mold mounted on an arbitrary mold mounting station. While punching the mold mounting station designated by the program to a predetermined machining position, punching is sequentially performed with the determined mold.

Therefore, in such a turret punch press,
The dies used for the NC program to be machined from now on must be confirmed on a work slip or the like, and the dies must be replaced as appropriate so that each used die is mounted on the die mounting station specified by the NC program.

On the other hand, turret punch presses in recent years have become multifunctional,
The mold structure is also complicated, and the structure is accompanied by the operation of various auxiliary functions. Examples of this kind of auxiliary function include, for example, an air blow function for removing scrap and lubrication in punching, and an external driving function of a die in a molding or burring mold.

Therefore, conventionally, to activate these auxiliary functions,
Like other auxiliary functions, it is specified by so-called auxiliary code (M code) and specified on the NC program as G92X1000.Y1000 .;… M- G90X500.Y500.T9;… M-… While the mold was being driven, the command was issued as follows.

The NC device that has input the NC program reads the codes sequentially, positions the work clamp device, finds the mold mounting station specified by the mold code (T code) immediately below the striker, and performs punching or drawing or burring. Processing is performed. If an auxiliary code for the mold is specified, the function specified by the auxiliary code is activated.

(Problems to be Solved by the Invention) However, in the conventional turret punch press configured as described above, the auxiliary function for the mold must be specified each time on the NC program like the other auxiliary functions. However, there was a problem that programming was difficult.

At this time, it is necessary to confirm whether or not a function to be specified exists for each mold. There was a problem that the operation was wasted.

Therefore, an object of the present invention is to provide a control device for a turret punch press that can be easily programmed and can easily and reliably operate an auxiliary function unique to a mold.

[Structure of the Invention] (Means for Solving the Problems) The present invention for solving the above problems has a plurality of mold mounting stations on a turret C1, as shown in FIG.
C2 is installed and an arbitrary mold C3 is attached to an arbitrary mold installation station C2 with an appropriate external operation designation as an auxiliary function. In the control device of the turret punch press for performing predetermined processing with a predetermined die C3 by giving an external operation as appropriate while indexing to the processing position, input the NC program C4 in which the die is specified by the die mounting station number S NC A program input unit C5 and an NC input to the input unit C5
A mold setting section C6 for setting a mold with the mold mounting station number S from the program C4, and a mold C2 set in the setting section C6.
Mold indexing control unit for indexing by rotating the turret C1
C7 and a mold list storage unit C8 for associating the mold C3 currently mounted in each mold mounting station C2 and storing the contents including the contents of auxiliary functions unique to each mold, if any. A mold auxiliary function automatic setting unit C9 that searches the mold list from the mold mounting station number S set in the mold setting unit C6 and extracts and sets the auxiliary function of the currently set mold C3; A mold auxiliary function control section C10 is provided which outputs the auxiliary function set by the setting section C9 in accordance with the control operation of the mold index control section C7.
The mold list is appropriately edited by a mold list editing unit C11 connected to the mold list storage unit C8.

(Operation) The mold assisting function control device of the turret punch press according to the present invention has a mold list in which the molds are made to correspond to the mold mounting station number S, and each mold in the list has a unique auxiliary. The contents of the function are attached.

In addition, the mold auxiliary function automatic setting unit C9 uses the list for the mold mounting station number S set in the mold setting unit C6 and performs the auxiliary function for the mold C3 mounted in the station S. Set automatically.

Therefore, in the present invention, it is not necessary to specify the mold assist function in the NC program C4, and the mold assist function automatic setting unit C9
Is set automatically by.

The mold list is edited by the mold list editing unit C11, but if a non-volatile memory is used, the list needs to be updated only for the replaced mold.

(Example) Hereinafter, an example of the present invention will be described.

FIG. 2 is a front view showing an example of a turret punch press.
FIG. 3 shows a plan view of the turret.

As shown in FIG. 2, the turret punch press 1 has a so-called bridge-type frame 2.
It has upper and lower turrets 3 and 4 inside.

The upper and lower turrets 3 and 4 are rotatable about a shaft 5 in a horizontal plane, and include a number of mold mounting stations S (IJ). I indicates a station number, and J indicates station characteristics such as a mold size and the presence or absence of an auto index mechanism. However, this mechanism is unique to the station and differs from the mold-specific auxiliary functions described below.

The dies mounted on each dies mounting station S (IJ) are indexed immediately below the ram (strike) 6 so as to perform a predetermined processing on the work W guided between the turrets 3 and 4. Has become. The work W is gripped by the clamp device 7 and guided on the table 8.

FIG. 4 shows an example of a mold provided with a so-called air blow function as an example of a mold auxiliary function among the molds mounted on the mold mounting station S.

In the figure, an upper die (punch) is provided with a holder 10 which is fitted at an angle into a hole 9 provided in a die mounting station of the upper turret 3, and a first spring 12 in the holder 10.
The punch (main body) 13 is strongly urged upward and is housed in a vertically movable manner. The holder 10 is provided in the hole 9 of the upper turret 3 with a second spring 14 which is weaker than the first spring 12.
Thus, the lower surface is always kept at a position higher than the passing surface of the work W.

The lower die (die) 15 is housed in a hole 16 provided at a die mounting station of the lower turret 4.

On the other hand, the striker 6 of the present example has an air passage 18 provided in the punch 13 and facing an air passage 17 penetrating through the head thereof.
9. Connected to the air source 20 via the solenoid valve SV.

The air passage 17 is guided by a hole 21 provided in the wall surface of the holder 10 and a tip end portion of the punch.

The solenoid valve SV is actuated by a digital output signal under the control of a programmable controller, which will be described later, with respect to the positional relationship of the crankshaft 22 that drives the striker 6, and allows air including oil or oil mist to flow from the air source 20 to the air passage. 18 is introduced.

In the above-described mold configuration, when the workpiece W is interposed between the two molds 13 and 15 and the tip of the punch 13 is shot by the striker 6, the punch 13 is pressed down against the spring 14, and then against the spring 12, The work W is pushed down, and the work W is finally punched out at its tip, and the scrap 23 is dropped through the die 15 to the scrap discharge port.

However, at this time, the residue 23 may come into close contact with the tip of the punch 13 and try to stop at the punch passage hole of the holder 10.

Therefore, in the mold of this example, via the air passages 18 and 17,
Air pressure is applied to the tip of the punch, and the residue 23 is reliably discharged to the die 15 side. Also, by mixing the oil mist into the air, the oil mist is given to the outer wall of the holder 10 to ensure lubricity.

Examples of other auxiliary functions of the die include an example in which the core of the die is operated by an external signal in a drawing die or a burring die.

As shown in FIG. 5, a control device (NC device) for controlling the turret punch press 1 includes a CPU 2 connected to the system bus 24.
5, ROM26, RAM2 backed up by battery Bat
7, Digital input (Di) 28, Digital output (Do) 29, Programmable controller (PC) 30, Bidirectional RAM (DP-RAM) 31, Serial interface (SI)
O) 32, 33, parallel interface (PIO) 34, etc. are connected.

Various actuators 36 and sensors 37 are connected to Di28 and Do29 via a connector module 35.

The PC 30 refers to the detection signal of the sensors 37 and
The control signal is output to various actuators 36 under the operating system of 5. The control signals include a signal for rotating the turrets 3 and 4 and a drive signal for the solenoid valve SV for the air blow.

An encoder E and a servomotor Ms with a tacho generator TG are connected to the DP-RAM 31 via a positioning module (PCM) 38 and a servo amplifier 39. The servo motor Ms includes a two-dimensional servo motor MX, MY for driving the clamp device 7 in a horizontal plane, and a servo motor MT for rotating and driving a mold in the turrets 3, 4. The serial interface 32 is connected via a controller 40 to a color CRT 41 and a manual data input device (MDi) 42 provided with data input keys such as numeric keys.

The serial interface 33 includes a controller 43
A control panel 44 for performing various operations is connected via the.

The parallel interface 34 is connected to a paper tape reader (PTR) 45 for inputting an NC tape. A nonvolatile memory for storing and holding the NC program is connected to the paper tape reader 45 in parallel as appropriate.

Briefly showing the operation of the above control device, the NC program read from the PTR 45 or a memory (not shown) includes designation of a station number and processing to perform predetermined processing with a mold mounted on this station. Information such as a position is stored.

Therefore, the CPU 25 operates the Di28, Do29, PC30, and DP-RAM31 under the operating system, rotates the turrets 3 and 4 shown in FIG. 7, the striker 6 is lowered for the workpiece W to be moved to the processing position, and a lowering operation is performed.

The RAM 27 has a mold list storage section C8 shown in FIG.

 FIG. 6 shows a display example of the mold list.

The mold list of the present embodiment is configured by associating the mold mounting station number with the shape data and attribute data of the mold currently mounted in the station. Mold number 1D, 2A, 3A,
,... Indicate serial numbers, and A, B,... G indicate mold sizes. “BR” indicates a burring die. "Angle" indicates the mounting angle of the mold with respect to the station. Subsequent “air blow”, “throttle operation”, and “burring” indicate mold assist functions. "Air blow" indicates the function of the air blow shown in FIG.
“Drawing operation” and “burring” indicate functions in which the die is operated by an external signal in the drawing die and the burring die. However, as for “aperture operation” and “burring”, a specific character is written after the representative shape of the mold, so that the specific character may indicate that each function is provided.

The above-mentioned mold list can be obtained, for example, by writing it in the involuntary information of the NC program and displaying it on the CRT 41A. Is not always installed. In this case, the operator performs a mold check and a replacement operation to attach a predetermined mold to a predetermined mold mounting station.

More generally, it is preferable to store the die cost in a non-volatile memory and to optimize the contents of the station whose die has been replaced. In addition, the mold installation list created in this way may be compared with a used mold list obtained from an NC program or a work slip, and only the difference may be changed. Furthermore, in this case,
The comparison between the two lists can be automatically determined, and the display of the difference can be notified by blinking or the like.

Next, a method for automatically setting and automatically operating a mold auxiliary function based on the mold list shown in FIG. 6 obtained as described above will be described.

In the flowchart of FIG. 7, in step 701, information on the die assist function on the screen 41A shown in FIG. 6 is read into the PC 30 via the bus 24.

Next, in step 702, the automatic operation is started, and in step 703, one block of the NC program is read.
It is determined whether or not there is an external operation for operating the mold assist function.

If there is an external operation in step 704, the process proceeds to step 706 via step 705.

In step 705, a signal for operating a predetermined actuator at a predetermined timing in accordance with the die assist function shown in FIG. 6 is set, and the routine proceeds to step 706.

In step 706, the servo control of the NC device and the sequence processing of the PC 30 are executed in parallel, and a predetermined press operation is performed. In the example of the mold shown in FIG.
Is set to open the solenoid valve SV at the timing of communication with the air passage 18 and the air passage 18, the work W is positioned, and when the striker 6 is lowered, the air including oil mist is generated in the holder 10 by the punch 13. Guided in the distal direction, the scrap 23 is pushed out to the die 15 side.

In step 707, the program end is determined, and the automatic operation ends.

As described above, in the turret punch press of this example, the sixth
The die list including the die auxiliary function information is edited on the screen shown in the figure, and the die auxiliary function can be effectively operated by the NC program easily created without including the information.

In the above embodiment, the mold list is stored on the RAM 27, but the mold list is unified and registered in a special mold master, and other mold information, for example, data of the mold history. It can be used organically in conjunction with the above.

Furthermore, if the mold data and other data are centrally managed as a database, it is easy to adapt to FMS and CIM in a processing line including a turret punch press.

The present invention is not limited to the above embodiment, but can be implemented in an appropriate mode by making appropriate design changes.

[Effects of the Invention] As described above, according to the present invention, by providing mold auxiliary function information to the mold list, the turret is configured to operate the mold auxiliary function without designating the mold auxiliary function on the NC program. Since it is a control device for punch presses, it is easy to create NC programs, and it is possible to easily and reliably operate auxiliary functions unique to the mold.

[Brief description of the drawings]

1 is a diagram showing an outline of the present invention, FIG. 2 is a front view of a turret punch press embodying the present invention, FIG. 3 is a plan view of the turret, and FIG. 4 is a sectional view of a mold having an air blow function. FIG. 5, FIG. 5 is a block diagram of a control device of the turret punch press mainly including an NC device, FIG. 6 is a front view of a CRT screen showing a display example of a mold list, and FIG. 7 shows an automatic operation system. It is a flowchart. C1… Turret C2… Mold mounting station C3… Mold C4… NC program C5… NC program input section C6… Mold setting section C7… Mold index control section C8… Mold list Storage unit C9: Mold auxiliary function automatic setting unit C10: Mold auxiliary function control unit

Claims (1)

(57) [Claims] A turret is provided with a large number of mold mounting stations, and an arbitrary mold having an appropriate external operation designation as an auxiliary function is mounted on an arbitrary mold mounting station.
In the turret punch press control device, which performs a predetermined processing with a predetermined die by appropriately giving an external operation while indexing the die mounting station specified by the program to a predetermined processing position, the die specification is performed by the die mounting station. An NC program input unit for inputting an NC program performed by a number, a mold setting unit for setting a mold by a mold mounting station number from the NC program input to the input unit, and a mold set by the setting unit A mold indexing control unit for indexing the mold by rotating the turret, and a mold currently mounted in each mold mounting station are made to correspond to each other, and when there is an auxiliary function unique to each mold, the contents thereof are described. A mold list storage unit to be included and stored, and a search for the mold list based on a mold mounting station number set in the mold setting unit, and assistance for a currently set mold. A mold auxiliary function automatic setting unit for extracting and setting the function, and a mold auxiliary function control unit for outputting the auxiliary function set by the setting unit in accordance with the control operation of the mold index control unit. Characteristic turret punch press control device.