KR100583257B1 - Display device of press machine and method of display - Google Patents

Abstract

SUMMARY OF THE INVENTION The present invention provides a display device of a press machine and a display method thereof, in which a press angle display is easy to see during various press operations and has good operability.

Operation screen display for press operation in at least one of the operation modes such as mold preparation, production, data setting and maintenance, press angle data display 3 and / or press for displaying the press angle as numerical data. Each display position corresponding to the size of the angle is provided with a contiguous annular area, and the press angle position display 2 for displaying the press angle position is simultaneously performed on the same screen. The press angle data display 3 and / or the press angle position display 2 can at least be enlarged, reduced or partially displayed. In addition, the whole press angle display may be enlarged or reduced, or a partial enlargement may be possible.

Description

Display device of press machine and its display method {DISPLAY DEVICE OF PRESS MACHINE AND METHOD OF DISPLAY}

1 is a front view of a press operating table to which the display device according to the present invention is applied.

2 is a diagram showing a display example in a data setting mode of a display device according to the present invention;

3 is a view showing a display example in the mold preparation mode of the display device according to the present invention;

4 shows a display example in a production mode of a display device according to the present invention;

Fig. 5 is a diagram showing a display example in the holding mode of the display device according to the present invention;

6 is an enlarged view of an example of press angle position display according to the present invention;

7 is a view showing a reduced example of the press angle position display according to the present invention.

8 shows an enlarged view of a press angle data display according to the present invention;

9 is a view showing a partially enlarged example of a press angle position display according to the present invention.

10 is a view showing another example in which the press angle position display according to the present invention is partially enlarged.

11 is a view showing still another example in which the press angle position display according to the present invention is partially enlarged.

12 is a view showing an example of a press operating table according to the prior art.

<Description of the symbols for the main parts of the drawings>

1: display device

2: press angle position display

3: press angle data display

4: press speed display

5: operation status display unit

6: Command display unit

7: Command input switch

11: cursor movement switch

12: numeric keys

13: Enter key

20: press operation operation switch unit

21: power off / open key switch

22: power input display

23: main motor switch unit

24: main motor start display unit,

25: Light Safety Device Enable / Disable Switch

26: data setting mode off / open switch

27: ready state display unit

28: light safety status display

31: status display unit

32: production data display unit

33: operation data display unit

35: return command

36: monitor screen

41: Standby range display

42: bottom dead center range display

43: top dead center range display

50: press operating table

51: press angle position indicator

52: press angle data indicator

53: graphic screen indicator

54: operation switch unit

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a display device of a press machine and a display method thereof, and more particularly to a display device and a display method thereof in which press angle display is easy to see.

In a press machine, various operations such as mold preparation for mold replacement and the like, production for press working, data setting for setting various data for press operation, maintenance for failure diagnosis and periodical maintenance, etc. are required. Depending on the and indicators, these operations are possible. In each of these operation modes, the display of the press angle (corresponding to the crank angle of the press) must always be in a position where it is easy to see for improving the operability and ensuring safety.

As an example of such a press operating table, it is shown, for example in FIG. In the figure, a dedicated press angle position indicator 51 and a press angle data indicator 52 are provided above the press operating table 50. In the center portion of the press operating table 50 is shown an operation screen for performing a press operation in accordance with each operation mode, setting various data, or monitoring an internal state signal, an input / output signal, or the like. For example, a graphic screen display 53 (comprising a liquid crystal display, a plasma display, or the like) having a transparent touch key is attached to a press operating table. Moreover, the operation switch part 54 provided with operation switches, such as the interruption | blocking / opening of a power supply and a crankshaft drive main motor, and the state display etc., is provided in the lower part of the press operation stand 50. As shown in FIG.

The light emitting diodes (LEDs) are arranged in an annular shape (for example, in a circular shape or an ellipse shape) in the press angle position indicator 51, and each light emitting diode is sequentially corresponding to a predetermined range of the press angle. As a result, each light emitting diode is displayed according to the actual press angle position, so that the slide position can be easily understood. In addition, the press angle data indicator 52 displays the press angle by a digital value by numeric indicators, such as an LED 7 segment indicator or a fluorescent display tube, and is generally displayed by three digits.

However, in the display apparatus of the conventional press machine as mentioned above, the following problem arose.

1) The press angle indicator of the press angle position indicator 51 and the press angle data indicator 52, and the other operation switch part 54 and the graphic display indicator 53 as separate equipments are installed at a position away from the press operating table. It is. By the way, the operator often performs various press operations, data settings, and the like while looking at the press angle indicator, and has to move the viewpoint greatly every time the press angle display is viewed. Therefore, operability falls and an operator tends to be tired.

2) Since the magnitude | size of the press angle display by the press angle position indicator 51 and the press angle data indicator 52 is constant, it may be difficult to see according to the purpose and the situation of a press operation, and operability may fall. That is, for example, when performing mold replacement by mold preparation operation, the press angle near the slide top dead center (the crank angle is 0 degree position) or the slide bottom dead center (the crank angle is 180 degree position) must be monitored in detail and reliably. For this reason, the press angle display may be large. Or during production, it is only necessary to monitor the press angle display while working at a position away from the press operating table, and there is a case where it is not necessary to monitor other production information or operation status. In such a case, it is difficult to see because the size of the display cannot be changed conventionally, and therefore the operator has to stop the work and move to the vicinity of the press angle indicator to confirm the display, thereby degrading workability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to provide a display device of a press machine and a display method thereof which are easy to see the press angle display during various press operations and have good operability.

In order to achieve the above object, the first embodiment of the present invention provides an operation screen display for performing a press operation in one or more modes of operation such as mold preparation, production, data setting and maintenance,

Press angle data display (3) for displaying the press angle as numerical data and / or press angle position display (2) for displaying the press angle position by providing each display position corresponding to the magnitude of the press angle in a continuous annular area (2). ) On the same screen at the same time.

According to the first embodiment, since the operation screen and the press angle data and / or the press angle position are simultaneously displayed on the same screen, the amount of movement of the viewpoint is small and easy to see when various operations are performed while looking at the press angle. Therefore, fatigue at the time of operation can be reduced and operability can be improved.

According to a second embodiment of the present invention, in the display apparatus of the press machine of the first embodiment, the press angle data display 3 and / or the press angle position display 2 are necessary at the time of operation in each operation mode. According to the present invention, at least one of enlargement, reduction, and partial display is possible.

According to the second embodiment, in each operation mode, the display of the press angle data and / or the press angle position can be enlarged, reduced or partially displayed as necessary to make the press angle display easier to see. Therefore, the operation is not interrupted every time the operator moves to the vicinity of the indicator for confirmation, and the press angle position is easy to see when the press angle is to be known in detail, for example, when the mold is mounted in the mold preparation mode. As a result, a press angle can be recognized correctly and workability can be improved in various operation modes.

In the third embodiment of the present invention, in the display apparatus of the press machine of the second embodiment, the enlargement or reduction of the display is made possible to enlarge or reduce or partially enlarge the entire press angle display.

According to the third embodiment, it is possible to enlarge, reduce or partially enlarge the entire press angle display, so that it is possible to freely change the size of the appropriate press angle display according to the work contents in each operation mode. For example, during continuous automatic operation in the production mode, only the press angle may be monitored, and at this time, the entire press angle display can be enlarged and easily viewed. Further, in the mold preparation mode, for example, when it is necessary to know the press angle near the bottom dead center or near the top dead center in detail, the press angle can be partially enlarged to display the resolution at a high resolution. As a result, workability can be improved and operator fatigue can be reduced.

According to a fourth embodiment of the present invention, in the display device of the press machine of the second embodiment, the enlargement or reduction of the display is possible to enlarge or reduce or partially enlarge the entire press angle position display 2 only. have.

According to the fourth embodiment, only the press angle position display can be enlarged, reduced or partially enlarged, so that the press angle position display can be freely changed to an appropriate press angle position display size according to the work contents in each operation mode. . For example, when only the fact that the press machine is normally operated is simply known, by expanding and displaying only the entire press angle position display, the movement of the slide can be displayed sensibly and easily over a wide range of the screen. Therefore, workability can be improved and fatigue of an operator can be reduced.

In the display device of the press machine of the third embodiment, the fifth embodiment of the present invention is the position of the standby point range display 41 in the press angle position display 2 corresponding to the set value of the standby point range of the press angle. To make it changeable.

According to the fifth embodiment, since the standby point range display in the press angle position display is freely changed in correspondence with the setting value of the standby point range of the press angle, the operator always changes the setting area of the standby point range accurately and sensibly. You can check it. Therefore, the misoperation related to the standby point position at the time of various operations is eliminated and it becomes easy to operate.

A sixth embodiment of the present invention is the display device of the press machine according to any one of the first to fifth embodiments, wherein the area in the press angle position display 2 corresponds to the setting area of the timing signal. The display positions 42 and 43 can be changed.

According to the sixth embodiment, since the area display position in the press angle position display is changed in correspondence with the setting area of the timing signal (that is, the interlock signal with the peripheral device or the automation device), the operator operates the operation in which the timing signal is set. The area can be identified accurately and sensibly. As a result, the operation confirmation of the timing signal can be performed without error, and the fault diagnosis relating to the timing signal can be performed accurately and in a short time, so that the operability in the mold preparation mode or the production mode can be improved.

In the seventh embodiment of the present invention, in the display device of the press machine of the sixth embodiment, the setting area display of the timing signal is an ejectable area display.

According to the seventh embodiment, since the setting range of the operating area of the ejector (the function of applying a release agent to the mold surface during press processing) is displayed on the press angle position display as the ejectable area, the operator can operate the ejector. The area can be identified accurately and sensibly. As a result, the operation of the ejector can be confirmed reliably, and the fault diagnosis related to the ejector can be accurately and shortly performed, so that the operability in the mold preparation mode or the production mode can be improved.

The eighth embodiment of the present invention displays an operation screen for performing a press operation in one or more of the operation modes such as mold preparation, production, data setting and maintenance, and simultaneously inputs a press angle to display the same screen as this operation screen. The display method of the press machine is characterized by displaying the press angle as numerical data and / or displaying each display position in a continuous annular predetermined region corresponding to the size of the press angle.

According to the eighth embodiment, an operation screen in each operation mode is displayed, and on the same screen, the press angle data is displayed corresponding to the input press angle and / or the respective display positions are successively annular. In a predetermined area. As a result, the amount of movement of the viewpoint between the time when the operator views the display of the press angle data and the press angle position and when the operation screen is viewed becomes small, and the view becomes easy. Therefore, fatigue at the time of operation can be reduced and operability can be improved.

The ninth embodiment of the present invention displays an operation screen for performing a press operation in one or more modes of operation such as mold preparation, production, data setting and maintenance, and simultaneously inputs a press angle to display the same screen as this operation screen. On the display, at least an enlarged, reduced or partially displayed press angle position display for displaying numerical data display of the press angle and / or displaying each display position in a continuous annular predetermined area corresponding to the size of the press angle. It is a display method of the press machine characterized by the above-mentioned.

According to the ninth embodiment, since the display of the press angle data and / or the press angle position can be enlarged, reduced, or partial display on the same screen as the operation screen, the press angle display can be made easier to see. have. Therefore, the work is not interrupted every time the operator moves to the vicinity of the indicator for checking the press angle, and the press angle position is easy to see when the press angle is to be known in detail, for example, when the mold is mounted in the mold preparation mode. Lose. As a result, a press angle can be recognized correctly and workability in various operation modes can be improved.

A tenth embodiment of the present invention is a display method of a press machine for displaying a press angle, wherein each display position is displayed in a predetermined annular predetermined area corresponding to the size of an input press angle, and the annular press is pressed. The entirety of the angular position display region is enlarged and reduced or a portion is enlarged and displayed.

According to the tenth embodiment, since the entire press angle position display is enlarged, reduced, or enlarged and displayed, the size of the press angle position display can be freely changed according to the contents of the operation in each operation mode. have. For example, when only the fact that a press machine is normally operating needs to be known simply, only the whole press angle position display is enlarged and displayed. Or, in the mold preparation mode, when only the range near the bottom dead center is desired to be known in detail, the predetermined range near the bottom dead center is partially enlarged and displayed. Accordingly, the slide movement can display the screen sensibly and easily over a wide range. In addition, since the resolution of the press angle with respect to the display position can be increased, detailed press angle display is possible. Therefore, workability can be improved and fatigue of an operator can be reduced.

EMBODIMENT OF THE INVENTION Below, the Example of the display apparatus of the press machine which concerns on this invention is described in detail with reference to drawings.

1 is a front view of a press operating table to which the display device according to the present embodiment is applied. In the figure, the display apparatus 1 is provided in the substantially center part of a press operating stand, and the command input switch part 7, the cursor movement switch part 11, and the numeric key 12 below the display device 1 are shown. And a data input key (hereinafter referred to as an enter key) 13 are provided. Moreover, the press driving operation switch part 20 is provided in the lower part of the press operating stand, and the operation preparation state display part 27 and the light safety device state display part 28 are provided in the upper part.

The press driving operation switch unit 20 starts, stops or rotates the main motor for rotating the slide crankshaft, the power cut / open key switch 21, the power input display unit 22 (consisting of a light emitting diode or a lamp display), and the slide crankshaft. The main motor switch section 23 for changing the direction, the main motor start display section 24 (consisting of a light emitting diode or a lamp display), a light safety device enable / disable switch 25, and a data setting mode cut / open switch ( 26) and the like.

The operation preparation state display unit 27 indicates each state during the preparation completion, the preparation not completed, and the stop (emergency stop or abnormal stop) of the slide start operation, and the light safety device state display unit 28 enables or disables the light safety device. And the respective states of light blocking stop.

The display apparatus 1 consists of a graphic display of a liquid crystal display or a plasma display, for example, and can monitor the press operation state, setting data, etc. corresponding to each operation mode of press operation. That is, in the screen of FIG. 1, the annular press angle position display 2 is performed on the left side of the screen, and the press angle data display 3 and the press speed display 4 are performed inside. The press angle position display 2 shows the crank angle of the slide in an annular (here circular) continuous angle position display area, which is, for example, the angle position every 5 degrees of the crank angle, depending on the display resolution. Is displayed. The press angle data display 3 and the press speed display 4 respectively display press angles and speeds as digital numerical data, and are displayed in predetermined digits according to the operation purpose and contents. In addition, operation screens required for press operation are displayed on the right and lower sides of the screen. That is, an operation in which different press operating states (here, the number of work productions in the production mode, that is, a total counter or a lot counter, a die height or a slide load value for each press stroke, etc.) are displayed. A status display section 5 and a command display section 6 for displaying a command specific to each operation mode are provided.

In addition, the command input switch unit 7 selects and inputs each command displayed on the command display unit 6 of the lower end of the display device 1. In addition, when the display apparatus 1 is comprised with the display with a transparent touch key type | mold, the command input switch part 7 will become unnecessary, and it will input by the touch key corresponding to each command of the command display part 6, and to input. Can be. Further, the cursor displayed on the display device 1 can be moved to an arbitrary position by the cursor movement switch section 11, and numerical data or the like can be set at the position of the cursor by the numeric keys 12, and the enter key ( 13), this set data can be input to a press controller (not shown).

The display device 1 displays different screens corresponding to each press operation mode, that is, modes such as data setting, mold preparation, production and maintenance. However, in these other screens, the press angle position display 2 and the press angle data display 3 are always displayed on the screen in accordance with the operation contents and the operation purpose, and the portion and size of the display can be changed. Hereinafter, the screen display example for each operation mode is demonstrated.

2 is a diagram illustrating a display example in the data setting mode of the display device 1. The data setting mode is a mode for setting a specific mold number, preparation data, production data, and the like for each mold, and each mold enables mold management, preparation switching, and production according to the mold number. In the data setting screen, the press angle data display 3 is performed, and this press angle data is referred to by the operator at the time of setting each data.

3 is a diagram illustrating a display example in the mold preparation mode of the display device 1. In the mold preparation mode, a mold exchange corresponding to a mold number is performed, and disassembly and unloading of the finished mold, and the carrying in and installation of a mold to be used for the next production can be performed. The mold preparation screen is provided with state display units 31 such as an upper mold / lower mold clamp, a die lifter, a die cushion, and the like, which are operated at the time of disassembling or installing a mold or adjusting a mold height. In addition, an operation command necessary in the mold preparation mode is displayed on the command display section 6 at the bottom of the mold preparation screen. In addition, the press angle position display 2 and the press angle data display 3 are performed on the left side of the center of the mold preparation screen, and the press angle is referred to by the operator at the time of the above operation.

4 is a diagram illustrating a display example in the production mode of the display device 1. The production mode is a mode in which press working production is performed in actual work, and press operation is performed based on production data according to the model number. The press angle position display 2 and the press angle data display 3 are performed on the left side of the center portion of the production mode screen, and the press angle during press operation is always displayed. In addition, the press angle position display 2 includes a press operation mode (for example, a press master mode for controlling interlocking timing with peripheral devices on the basis of a slide position, or a peripheral state on the basis of an operation state of the peripheral devices). A standby point range display 41 (corresponding to an oblique line portion in the drawing) indicating a slide standby point (i.e., slide pause position) range set for each type of feed master mode for controlling the interlocking timing is performed. This waiting point range display 41 is distinguished according to the shade and color of the display so that it is easy to identify the different press angle positions.

Furthermore, as the operation state display part 5, the production data display part 32 which displays the set value of the production data and its present value, and the operation data display part 33 which displays die height set value, load set value, etc. are provided. Each command necessary for operation in the production mode is displayed on the command display section 6 at the bottom of the screen.

5 is a diagram illustrating a display example in the holding mode of the display device 1. The maintenance mode is a mode for performing fault diagnosis and operation state monitoring during press operation, and can display various control signals, status signals, setting data, performance data, and the like. The same figure shows the display of the monitor screen 36 for monitoring the input / output state of the timing signal for controlling the interworking with the peripheral device in the production mode. Thus, even in the holding screen, in order to check whether the control signal or the state signal is inputted or outputted at a normal timing with respect to the press angle, the press angle display (here, the predetermined portion and the press requiring the press angle position display 2 here) Angle data display 3).

6 is a diagram showing an example in which the press angle display is enlarged. In the display device according to the present invention, at least one of the press angle position display 2 and the press angle data display 3 can be enlarged and displayed, and the press angle position display 2 is the whole or a predetermined portion thereof. This is scalable. In the same figure, the example of the press angle position display 2 and the press angle data display 3 enlargedly displayed over the whole screen in the production mode is shown. The same enlarged display screen can be selected, for example, in a setting screen (not shown) switched by the production setting switch 34 of the command display unit 6 of the production mode screen shown in FIG. 4. In addition, the return command 35 makes it possible to return to the original production mode screen.

In addition, at least one of the press angle position display 2 and the press angle data display 3 can be reduced in size, for example, as shown in FIG. 7. In the same figure, the example which reduced both the press angle display (press angle data display 2 and press angle data display 3) is shown.

FIG. 8 is an example in which only the press angle data display 3 is enlarged, and shows a display example in the production mode. The press angle data display 3 is displayed on the same screen at the same time as other production data or control signal monitor, and is referred to by the operator.

9-11 is the example which enlarged the press angle position display 2, respectively, and has shown the display example in the mold preparation mode here. 9 and 10 are examples of enlarged display of the vicinity of the bottom dead center (press angle is 180 degrees) and the top dead center (press angle is 0 degrees) in the press angle position display 2, respectively, and FIG. 11 is a standby point. It is the display example which expanded only the neighborhood. In these enlarged displays, the resolution of the press angle position display increases with the enlarged display, and increases by a predetermined multiple of the resolution of the press angle position display 2 on the normal screen as shown in FIG. Angular position every two degrees of crank angle).

As shown in FIG. 9, the display effective digits of the press angle data display 3 can be increased as necessary to increase the display resolution of the press angle data display 3.

Moreover, in this invention, the press angle position corresponding to the setting area | region of the press when each timing signal is on or off can be displayed. 9 to 11, for example, a bottom dead center range signal, a top dead center range signal, and a standby point range signal are set as the timing signals, and the bottom dead center range display 42 and the top dead center range display 43 correspond to these setting regions. ) And an example where the standby point range display 41 is performed. In accordance with the partial enlargement display, the display of these setting areas is also enlarged.

Next, the operation and effect according to the above configuration will be described.

Since the press angle display of the press angle position display and the press angle data display are simultaneously displayed on the same screen as the operation screen for performing the press operation, the distance between the two displays becomes close, and the operator can press the display while viewing the press angle display. At that time, the movement of the viewpoint becomes very small and easy to see. Therefore, fatigue at the time of operation can be reduced and operability can be improved.

In addition, when performing a press operation by the operation screen, press angle display can be expanded, reduced, and partial display according to an operation purpose and content. For example, during continuous automatic operation in the production mode, if the operator needs to monitor the operation of the press machine while performing a separate work on another machine away from the press machine, usually the press is running or not. We are only monitoring whether the press angle is moving so that we know immediately. At this time, only the whole press angle display can be enlarged and made easy to see so that a press angle display can recognize that it is in slide operation in the distance. In particular, since only the press angle position display 2 is enlarged, since the movement of the slide is largely displayed over a wide range, it can be easily sensed.

In addition, in the mold preparation mode, for example, during the disassembly and attachment of the mold, it is necessary to position the slide with extreme precision at the bottom dead center or the top dead center by manual operation, so that the operator is near the bottom dead center or near the top dead center. It is necessary to know in detail the press angle at. At this time, the predetermined range in the vicinity of the bottom dead center or the top dead center of the press angle position display 2 can be partially enlarged, or the display digits of the press angle data display 3 can be increased, thereby increasing the resolution. . As a result, since the slide position can be seen with high accuracy, the slide positioning can be accurately performed.

In addition, when the setting range of the slide waiting point is changed according to the type of the press operation mode such as the press master mode or the feed master mode, the standby point range display 41 is displayed in the press angle position display 2 in correspondence with this setting range. ). As a result, the operator can accurately grasp the actually set standby point range, thereby eliminating erroneous operation by the press operation relating to the standby point position, and making the operation easy. For example, there may be a case where the transfer feeder, which transfers work in synchronization with a press machine, is returned to the home position before starting automatic operation, and the slide needs to be manually positioned within the standby point range at this time. In the slide operation to the point range, the operator's erroneous operation is eliminated. Therefore, trouble such as interference between the slide and the peripheral device does not occur, so the operability is improved.

In addition, the press angle position display 2 corresponds to a setting region of an operating region of a set timing signal (e.g., a bottom dead center signal, a top dead center signal, and other interlock signals between a peripheral device or a jig for automation and a device). Each range display (for example, bottom dead center range display 42, top dead center range display 43, etc.) is performed. Moreover, it responds to the setting range of the operation area | region of each control signal of the ejector (the function of apply | coating a mold release agent to the mold surface at the time of press working), and it is made to display as an ejector possible area | region in the press angle position display 2. The operator can confirm exactly and sensibly. This allows the operator to accurately and sensibly recognize the setting area of the timing signal and the ejector control signal. Therefore, when performing the operation recognition of the timing signal and the ejector control signal, the error is eliminated, and the fault diagnosis related to the timing signal can be accurately and in a short time. As a result, press operability in a mold preparation mode, a production mode, etc. can be improved.

Claims (10)

Operation screen display for press operation in one or more of the operation modes such as mold preparation, production, data setting and maintenance, Press angle data display 3 for displaying the press angle as numerical data and press angle position display 2 for displaying the press angle position by providing each display position corresponding to the magnitude of the press angle in a continuous annular region. A display apparatus of a press machine which performs one or more of the same on the same screen, At least one of the press angle data display 3 and the press angle position display 2 allows at least one of enlargement, reduction or partial display as necessary during operation in each operation mode. Display device of the press machine. delete The display device of a press machine according to claim 1, wherein the enlarged or reduced display is capable of enlarging, reducing, or partially enlarging the entire press angle display. The display device of a press machine according to claim 1, wherein the enlarged or reduced display is capable of enlarging, reducing, or partially enlarging the entire press angle position display (2) only. 4. The display apparatus according to claim 3, wherein the position of the standby point range display (41) in the press angle position display (2) can be changed in correspondence with the setting value of the standby point range of the press angle. The display region 42 or 43 of the press angle position display 2 can be changed in correspondence with the setting region of the timing signal. Display apparatus of the press machine. The display device of a press machine according to claim 6, wherein the setting area display of the timing signal is an ejector-capable area display. delete Displays the operation screen for performing the press operation in one or more modes of operation such as mold preparation, production, data setting and maintenance, and inputs the press angle to display numerical data of the press angle on the same screen as the operation screen. And at least one of at least one of the press angle position indications for displaying each display position in a predetermined annular predetermined area corresponding to the size of the press angle at least in an enlarged or reduced or partially displayed manner. . In the display method of the press machine which displays a press angle, When displaying each display position in the predetermined area | region of a continuous annular corresponding to the magnitude | size of the input press angle, the whole of the annular press angle position display area is enlarged or reduced, or it enlarges and displays a part, It is characterized by the above-mentioned. Display method of press machine made with.

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