JPH01162905A - Automatic programming device for nc punch press - Google Patents

Abstract

PURPOSE:To facilitate the maintenance and control of a machine by collecting automatically the trace data and grasping the working state of the machine from said trace data. CONSTITUTION:A turret punch press 1 is connected to an automatic programming device 3 and set into a sheet metal working line. The device 3 transmits the NC data and the trace conditions and receives the trace data to and from an NC device 15 via a serial circuit 47. Thus the trace data on the press 1 is obtained at the desired time point with output of the trace conditions. Then the working state of the press 1 is grasped based on the trace data. As a result, the maintenance and control are facilitated for a machine.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an automatic programming device for an NC punch press, and in particular, to obtain data for analyzing the operating state of the NC punch press and data for maintenance management. It relates to a device that can.

(Prior Art) Conventional automatic programming devices have been used only to supply automatically programmed NC data to the NC device side.

On the other hand, with conventional punch presses, it is difficult to manage mold wear and damage, etc. In particular, the adjustment of hides in molding dies, scribing dies, etc. must be managed and adjusted by humans.

(Problems to be Solved by the Invention) As described above, the conventional automatic programming device for NC punch press only supplies NC data, and cannot be used for analyzing the operating state or maintaining or managing the device. There was a problem.

An object of the present invention is to provide an automatic programming device that can easily analyze, maintain, and manage the operating state of an NC punch press.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides means for outputting tracing conditions such as starting time, interval, and number of times of tracing to an NC punch press; means for inputting various trace data output from the NC punch press in response to the trace conditions; means for sifting motion analysis data and maintenance management data based on the input trace data; and means for outputting the results.

(Function) In the present invention, by outputting trace conditions, trace data of the NC punch press can be obtained at a desired time.
This trace data allows the operating state of the NC punch press to be grasped, and maintenance and management of the apparatus can be easily performed.

(Example) FIG. 2 is an overall configuration diagram of a turret punch press to which an automatic programming device according to the present invention is connected.

As shown, a turret punch press 1 is connected to an automatic programming device 3 and placed in a sheet metal processing line.

The turret punch press 1 shown in this example has substantially the same shape as a normal turret punch press, and its configuration will be briefly explained.

The turret punch press 1 has a frame 5, and an upper turret and a lower turret that are rotatable around a vertical axis (Z-axis) are arranged at a predetermined interval above and below the inside of the frame 5. . A number of punches are attached to the upper turret in a plane position, and a number of dies are attached to the lower turret in a plane position facing the punches.

A cylinder device 7 equipped with a ram that can move up and down is provided in the center of the frame 5. A ram is located above the upper turret and presses a punch located below it toward the die.

A Y-axis guide rail 9 is provided on the side surface of the frame 5. This Y-axis guide rail 9 is provided with a moving member guided in the Y-axis direction by a Y-axis servo motor,
A table 11 with a free bearing is fixed to the upper surface of the moving member.

A carriage 13 is provided at the Y@ end of the table 11 and is movable in the X-axis direction by an X-axis servo motor. The carriage 13 is provided with a plate clamp device that grips the plate W placed on the table 11 and guides the plate W in the XY plane.

The turret punch press 1 having such a configuration includes an NC device 15.
By guiding the carriage 13 in the xY plane and driving the cylinder device 7 at the appropriate time, the plate material W is
It is possible to perform predetermined processing, drawing, scribing, etc. at a predetermined position.

FIG. 3 is a block diagram of a control system showing the JR essentials of the NC device 15 and an overview of the cylinder device 7 and its hydraulic circuit.

As shown in the figure, the cylinder device 7 has a piston 7b inside the cylinder 7a, and this piston 7b has upper and lower (
A ram 7C is connected so as to be movable in the Z) direction. Reference numerals 19, 21, and 23 are plate material clamping devices, respectively;
Shows punch and die. On the bottom surface of the cylinder 7a,
A pulse encoder 25 is attached which brings the rolling wheels into contact with the ram 7C and detects the movement of the ram using a pulse signal PS.

The hydraulic circuit 17 includes a hydraulic pump OP and the cylinder 7a.
The servo valve 27 is connected to the upper and lower chambers of the chamber through pipes OL+ and O12. Piping OL+
There is a pressure detector 2 that detects the oil pressure of the pipe using an electric signal.
9 is provided.

On the other hand, the NC device 15 has a main control section 31 as a control center, an NC data input section 33a, and a trace data output section 3.
3b, an XY wheel axle command 35, a Z-axis command part 37, a position detection part 39, and a servo valve control part 41.

The NC device 15 also includes a modified/evaluated turn storage section 43 and a trace data storage section 45 as memories.

Further, a noise sensor 46 for detecting a noise value is provided at a predetermined position outside the NC device 15, and its detection signal is supplied to the main control section 31.

The NC data input section 33a is connected to the automatic programming device 3.
It is connected to the main controller 31 via a serial line 47, receives NC data and trace conditions, and provides this data to the main controller 31.

Further, the trace data output unit 33b outputs various trace data stored in the trace data storage unit 45 serially. 47 to the automatic programming device 3.

Here, the trace conditions refer to trace start time, trace interval, and number of traces, and are input by the operator from the automatic programming device 3.

Further, the trace data refers to command values such as commanded position and commanded speed, actual values such as actual position, actual speed, and actual pressing force, and noise values.

The main control unit 31 is operated by an operator system, and the N
It receives and receives NC data from the C data input section 33a, and mainly controls the position of the plate material W and the drive of the cylinder device 7. Further, the main control section 31 is connected to various sensors, limit switches, and various actuators therebetween, and controls the turret punch press 1 in general.

Further, particularly in this embodiment, collection of trace data, output of the collected trace data to the automatic programming device 3, etc. are controlled in response to trace conditions.

The XY wheel set command 35 receives predetermined position control data from the main control section 31 and controls the positioning of the plate W within the XY plane by driving the X-axis and Y-axis servo motors. There is.

The Z-axis command section 37 receives Z-axis command data from the main control section 31 and outputs a digital signal SD for driving the servo valve to the servo valve control section 41.

The position detection unit 39 integrates the pulse signal PS output from the pulse encoder 25 and detects the current position Z of the ram 7C. This pulse encoder 25 is of a type that outputs two-phase pulse signals having a phase difference of 1/4, and the position detection section 39 detects the ram 7C based on these two-phase pulse signals.
You can also know the direction of movement.

The servo valve control unit 41 inputs the digital signal SD from the Z-axis command unit 37, and also inputs the current position Z of the ram 7C from the position detection unit 37, and based on these input values, performs a closed loop or An analog signal is applied to the servo valve 27 in the oven loop to control the valve 27 to a predetermined opening degree.

The machining pattern storage section 43 stores, for example, machining patterns (velocity patterns) as shown by solid lines in FIG.
The information is stored for each material thickness, etc., and thereby optimal stroke control is executed to comply with environmental standards for noise and vibration.

As shown in FIG. 1, the automatic programming device 3 of this embodiment has a NO data output section 49a that transmits NC data and trace conditions and receives trace data to and from the NC device 15 via a serial line 47. and a transmission control unit 49 consisting of a trace data input unit 49b, a main control unit 51 serving as a control center, a trace data storage unit 53 that stores received trace data piece by piece, and various types of data processing based on the trace data as described below. A calculation section 55 that obtains data for operation analysis and maintenance management, and an NC data creation section 57 that creates NC data that is the original function of the device.
NC data storage unit 59 that stores the created NC data
and a keyboard 61 for inputting various commands such as trace conditions.
and a CRT 63. which outputs the calculation result. It is equipped with an X-Y plotter 65 and a printer 67.

Next, the operation of this embodiment will be explained.

This turret punch press 1 is normally controlled based on NC data supplied from an automatic programming device 3, but in this embodiment, in particular,
Stroke control is performed based on the machining turn stored in No. 3.

That is, as described above, the machining and evaporation storage section 43 stores stroke speed characteristic patterns that are variably set according to the stroke position of the ram 7c for each type of machining and sheet thickness. In addition, this modified pattern is stored as day and night patterns in order to comply with noise environment standards and vibration environment standards, so that the punching process can be performed with low noise and low imaging.

To obtain trace data, an operator first inputs trace conditions (trace start time, trace interval, and number of traces) from the keyboard 61 and transmits them to the NC device 15 via the serial line 47.

When the NC device 15 inputs the above trace conditions, the fourth
The flowchart in Figure (A) starts, and the commanded position, commanded speed, actual position, actual speed, actual pressing force of the ram 7C,
and noise values are collected and stored in the trace data storage unit 45 (step 571).

Once the trace data is collected and stored, this trace data is transmitted to the automatic programming device 3 in accordance with the transmission request (steps ST2, 5T3).

On the automatic programming device 3 side, as shown in the flowchart of FIG. 4(B), reception of trace data is monitored in the first step ST4, and when received, it is newly stored in the trace data storage section 53. (Step 5T
5).

The trace data storage unit 53 stores, for example, trace data at the time of machine delivery, mold purchase, and all past trace data. Then, the calculation unit 55 compares the new trace data with the past trace data and performs calculations to calculate, for example, the degree of mold wear.

Furthermore, during the drawing process, it is necessary to maintain a constant pressing force at a predetermined position, but if this holding position shifts, the quality of the product will deteriorate. Therefore, the calculation unit 55 calculates the deviation between the commanded position and the actual position (step 5T7).

The calculation results in the calculation section 55 are outputted by the CRT 63, the X-Y plotter 65, and the printer 67 (step 5T7).
1).

FIG. 5 shows an example of trace data output from the X-Y block 65.

In the figure, the horizontal axis represents time (ms), and the vertical axis represents ram 7C.
The solid line shows the command position, the broken line shows the actual position, the dashed line shows the actual pressing force, and the dotted line shows the noise value.

As can be understood from the figure, by looking at such trace data, it is possible to know how much the command position and the actual position deviate, and also to determine the noise value etc. relative to the actual pressurizing force. You can know.

Further, as described above, the deviation between each command value and each actual value is calculated in the calculation section 55, and the result is sent to the CRT 13 or X-Y
This can be determined using the plotter 65. Then, the operator can make simple adjustments such as hide adjustment of the mold by looking at this output result.

Therefore, according to this embodiment, the processing state of the turret punch press 1, the degree of wear of the mold, and the
You can know the operating status of all machines, such as adjustment level and positioning accuracy. Furthermore, by analyzing this operating state, maintenance management data can be obtained.

[Effects of the Invention] As described above, according to the present invention, trace data is automatically collected, and the degree of wear of the mold, the degree of adjustment, the current processing state, etc. can be known from this trace data.

This has the effect of making maintenance and management of the library extremely easy.

[Brief explanation of the drawing]

Fig. 1 is a #I diagram of an embodiment of the automatic programming device for a NO punch press according to the present invention, Fig. 2 is a perspective view showing the overall configuration of a turret punch press to which the automatic programming device is connected, and Fig. 3 4 is a block diagram of the turret punch press, FIG. 4 is a flowchart for explaining the operation of the present invention, and FIG. 5 is an explanatory diagram of an example of printing trace data. 1...Turret punch press 3...Automatic programming device 49a...NC data output section 49b...Trace data input section 53...Trace data storage section 55...Calculation section 63...CRT 65 ...X-Y plotter 67...Printer representative Patent attorney Yasuo Miyoshi Figure 2 Figure 4 (A) Figure 4 (B)

Claims (3)

[Claims] (1) Start time of tracing for NC punch press,
means for outputting trace conditions such as intervals and times, means for inputting various trace data output from the NC punch press in response to the trace conditions, and data for motion analysis and maintenance based on the input trace data. An automatic programming device for an NC punch press, comprising means for calculating management data and means for outputting the results of the calculation. (2) The NC punch press according to claim 1, wherein the trace data is data indicating stroke control conditions such as commanded position, commanded speed, actual position, actual speed, actual pressing force, and noise value. Automatic programming device. (3) The automatic programming device for an NC punch press according to claim 1, wherein the calculated maintenance management data includes a mold wear degree.