JP2639756B2 - Method and apparatus for displaying effective series in multi-series NC apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for confirming an operation state in a multi-line NC machine tool. More specifically, during the operation of a multi-line NC machine tool, the operation sequence and the non-operation sequence are made different in color (color) display so that the operation can be easily confirmed.

[0002]

2. Description of the Related Art It is known that a numerical control (NC) machine tool has a plurality of spindles for holding a workpiece and a plurality of tool rests corresponding to the spindles. This type of numerically controlled machine tool realizes machining by simultaneously executing different NC programs on each tool post with one numerical control device. For example, in a numerical control lathe, two or more headstocks are arranged so that one or both can be moved in the direction of the spindle axis (usually the Z axis) so that the chuck faces the spindle axis. One having two turrets is known. This numerically controlled lathe performs processing by moving a workpiece held by a chuck of a spindle by moving a corresponding tool rest in the X and Z directions by a numerical controller. Machining programs for driving these numerically controlled lathes consist of multi-series machining programs that are separately created and input for each tool post. In other words, the multi-line NC machine tool is a machine tool that executes a plurality of machining programs simultaneously or in parallel with one numerical control device.

[0003]

In the multi-line NC machine tool described above, the operator often works on the machine tool while looking at the display screen. Therefore, when confirming the operation of each tool post on the CRT screen, the determination is made by looking at a screen displaying the coordinate positions of the tools of each tool post by numbers. However, in this case, unless a skilled technician or the like is used, it is not possible to confirm the operation state, and it takes time to reduce the work efficiency. The present invention has been invented in such a technical background, and achieves the following objects.

[0004] It is an object of the present invention to provide a display method and an apparatus for allowing an operator of a multi-line NC machine tool to check an effective sequence of operations at a glance while looking at an operation screen (display device).

Another object of the present invention is to provide a display method and an apparatus for preventing an operator of a multi-line NC machine tool from operating errors.

[0006]

Means and Action for Solving the Problems A display device (104) having a keyboard for inputting data, a data file (109) storing data of machines, tools, works, etc. are provided for each system. A storage unit (113) storing a multi-series NC program (114, 115, 116) for operating a machine tool;
14, 115, 116) in a multi-sequence NC apparatus having a sequence selecting means (107a) for selecting operation or non-operation of each of the sequences, according to a sequence selection state of the sequence selecting means (107a). And displaying information on the effective sequence in the multi-line NC device in different colors on the display device (104). That device.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a machine tool (numerical control lathe) of the present invention.
2 (a), 2 (b), and 2 (c) are plan views, front views, and right side views of FIG. 1, and FIG. FIG. 4 is a diagram showing names of axes, and FIG.
FIG. 5 is a functional block diagram of a numerical control unit of the machine tool. FIG. 5 is a diagram illustrating a series selection switch. FIG. 6 is an example in which three series of information (position information) are collectively displayed on one screen. FIG. 7 shows an example in which three sets of information (memory information) are collectively displayed on one screen.

[0009] Mechanical Configuration FIG. 1, FIG. 2 (a), the FIG. 2 (b), a description about the mechanical movement of the machine tool with reference to FIG. 2 (c). Bed 1
Is a base that constitutes the main body, and is formed of a casting, a steel material, or the like. At one end on the bed 1, a first headstock 2 is provided. The inside of the first headstock 2 does not move on the bed 1. In the first headstock 2, a first spindle 22 is rotatably supported. The first chuck 3 is integrally provided at the tip of the first main shaft 22. First chuck 3
Is for gripping the work. First spindle 22
Are driven to rotate by a first spindle motor 4 of a built-in type.

The first main shaft 22 is provided so as to be able to control rotation indexing. The rotation indexing control is realized by controlling the rotation of the first spindle motor 4 or by providing another indexing motor and controlling the rotation of the indexing motor. A second headstock 5 is provided on the bed 1 at a position facing the first headstock 2. The second headstock 5 is movably provided on an inclined guide surface on the bed 1.

The drive on the inclined guide surface is performed by a Z2 servo 6 via a feed screw. This direction of movement is referred to herein as the Z2 axis. A second spindle 23 is rotatably provided in the second headstock 5. The second chuck 8 is provided at the tip of the second spindle 23. Second spindle 23
Is driven to rotate by the second spindle motor 9. Bed 1
A first carriage that moves in a direction parallel to the axial direction of the first main shaft 22 is provided above.

On the first carriage, a first cross slide that moves in the radial direction of the first spindle 22 is provided.
A first tool rest 11 having a dodecagonal turret is provided on the first cross slide. The first carriage is driven by a Z1 servomotor 10 on a horizontal guide surface on the bed 1 in an axis (Z1) direction parallel to the first main shaft 22. The first carriage is driven by a feed screw connected to the Z1 servomotor 10.

Further, the cross slide is driven in the X1 axis direction in a direction crossing perpendicularly to the Z1 axis, that is, in the radial direction of the work held by the first chuck 3. This drive is driven by the X1 servo motor 17 via a feed screw. The turret body has a dodecagonal shape, and 12 tool mounting surfaces are formed on the outer periphery thereof. Therefore, the number of tools to be attached is usually twelve.
On the bed 1, a second tool rest 20 is provided on the same horizontal guide surface facing the first tool rest 11.

The shape of the second tool post 20 is the same as that of the first tool post 11.
The structure is substantially the same as that of the first embodiment, and the function is substantially the same except for the direction of the axis. However, the second tool rest 20 does not move in the main axis direction in this embodiment. The third tool post 30 is a tool post provided on the front surface of the bed 1. A vertical guide surface is formed on the front surface of the bed 1. On the vertical guideway,
A third carriage is movably provided. The third carriage is driven by a Z3 servo motor 33.

A feed screw 33a is directly connected to the output shaft of the Z3 servo motor 33, and the feed screw 33a drives a third carriage in a direction parallel to the axes of the first and second main shafts. On the third carriage, a third cross slide is provided on the X3 guide surface so as to be movable in the X3 axis direction on the X3 guide surface. The driving in the X3 direction is driven by an X3 servomotor 37 via a ball screw (not shown). A turret body is provided on the third cross slide.

On the outer periphery of the cylindrical third turret body, 6
A book tool is installed. The third tool post 30 is
The purpose is to support machining of the tool rest 11 and the second tool rest 20. Concretely, processing sharing of inner and outer diameters, tomographic cutting of outer diameter processing (processing of outer diameter processing with two tools at the same time), support for thread cutting, measurement support, with bar material feeder Provides processing support such as the role of the burst stopper.
An operation panel 40 of a numerical control device for controlling the first turret 11, the second turret 20, the third turret 30, and the second headstock 5 is provided on the front of the second headstock 5. ing.

The control sequence First, according to FIG. 3, illustrating the axial configuration. As is apparent from the above description, the movement of the workpiece in the radial direction is defined as the X axis, and the movement in the axial direction is defined as the Z axis in accordance with the functions and properties of the axis. When the second headstock 5 facing the first headstock 2 moves in the main shaft axis direction, it is referred to as Z2 axis. According to these principles, the X and Z axes are respectively set to X1,
Z1, X2 in the second turret 20, X3 in the third turret,
Called Z3.

The first and second series of numerical control devices described below
The series and the third series are used in the following meaning. The first series indicates processing of the first spindle 22 by the first tool post 11,
As the axes to be controlled, two axes X1 and Z1 of the first tool rest 11 are controlled. Similarly, the second series indicates processing of the second main spindle 23 by the second tool rest 20, and two axes of X2 and Z2 are controlled. In the third system, two axes X3 and Z3 of the third tool rest 30 are controlled. However, the third turret 30 includes the first spindle 22
Or machining support for the second spindle 23,
When assisting the machining of the second spindle 23, the movement is interpolated with the movement axis Z2 of the second spindle 23. That is, simultaneous interpolation control of three axes is performed.

The functional block diagram 4 is a functional block diagram showing a numerical control unit 101 of the machine tool. The CPU 102 is a central processing unit that controls and controls the entire NC device. The CPU 102 includes a bus 10
Each memory area and each control circuit are connected via 3. The CRT (display device) 104 is a well-known display device for displaying figures, characters, and the like on a screen.

The CRT 104 has a keyboard, and displays and figures are displayed by a display driving device 105.
Controlled. Data is sent from the bus 103 to the display driving device 105 via the interface 106.

The interface 106 includes a CPU 102
The signal is received from the bus 103 in accordance with the command, the signal level is matched, and data is sent to the display driving device 105.

The operation panel 40 has a series selection switch 107
a, manual operation panel 107b, and the like. Manual operation panel 107
Reference numeral b denotes switches for inputting a command to the NC device via a programmable controller (not shown), and is used mainly for manually operating the numerical controller. The sequence selection switch 107a (details will be described later) is a switch for selecting a sequence to be operated during program checking or machining, and is connected to the programmable controller. The status of the sequence selection of the sequence selection switch 107a is sent to the CPU 102 via the programmable controller.

The data file 109 stores various data relating to the machine body, tools, works and the like.

The display program 110 stores a control program for displaying a machining program, a tool trajectory, a description, and the like.

The tool post control program 111 includes:
A control program in consideration of movement prohibition, permission control, and the like for preventing mutual interference between the two and three turrets 11, 20, and 30 is stored.

The drive unit 112 includes first, second, third
This is a control circuit for driving and controlling the servomotors of the tool rests 11, 20, and 30 and the servomotor of the second headstock 5.

The NC machining program memory 113 stores an NC machining program created for each tool post. The NC machining program (the series will be described later) includes a first series machining program 114, a second series machining program 115, and a third series machining program 116, each of which is stored and held.

The sequence selection switch Figure 5 shows a sequence selection switch 107a. The series selection switch is arranged on the operation panel 40. When the series selection switch 107a is selected, the numerical controller operates only the selected series of axes. Dial 107c
To turn the mark 1, 2, 3, 1 + 2, 1 + 3, 2 + 3 or 1 + 2 + 3 of the mark displayed on the panel of the operation panel 40.
The arrow 107d of the dial is set to one of the above and the selection is made. Mark 1 indicates selection of the first series, and marks 2 and 3 indicate selection of the second and third series. Mark 1 + 2 is
Marks 1 + 3, 2 + 3, and 1 + 2 + 3 are options for activating the first stream and the second stream, respectively.

Operation As described above, the multi-line NC apparatus is constituted by two spindles and three tool rests, and executes a plurality of machining programs of each line simultaneously or selectively. This selection is performed by the sequence selection switch 107a.

FIG. 6 shows an example in which the information (position information) of the three systems is displayed collectively on one screen. The upper left display is the first series,
The upper right display indicates the second series, and the lower left display indicates the third series.
The positions of the cutting edges of the X axis, Z axis, C axis (indicating the angle of the main axis) of each series, and the like can be known at a glance. In this example, the second system and the third system are operating (effective series). At this time,
When the effective series color is clearly displayed and the non-effective series color is displayed on the display device 104 as a dark color so that the distinction between the effective series and the non-effective series (inactive series) can be seen at a glance, the operation is performed. Confirmation is easy.

FIG. 7 shows an example in which information of three series (memory information) is displayed collectively on one screen. The left screen is the first
The series, the middle screen shows the second series, and the right screen shows the third series.
In this example, the program display of the second and third series is activated (effective series).

[0032]

As described above in detail, according to the present invention, it is possible to easily confirm the operation / non-operation sequence of the machine tool just by looking at the display screen, and it is expected that the work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a typical embodiment of a machine tool (numerically controlled lathe).

FIG. 2A is a plan view of FIG. FIG.
(B) is a front view of FIG. FIG. 2C is a right side view of FIG.

FIG. 3 is a diagram showing names of respective axes.

FIG. 4 is a functional block diagram of a numerical control unit of the machine tool.

FIG. 5 is a diagram illustrating a sequence selection switch.

FIG. 6 is an example in which three sets of information (position information) are collectively displayed on one screen.

FIG. 7 is an example in which three types of information (memory information) are collectively displayed on one screen.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bed, 2 ... 1st headstock, 3 ... 1st chuck, 5 ...
Second headstock, 11: first turret, 20: second turret, 3
0: third turret, 40: operation panel, 101: numerical control device, 102: CPU, 104: CRT (display device), 1
05: display driving device, 106, 108: interface, 107a: series selection switch 109: data file, 110: display program, 111: first and first
2, 3 turret control program, 112: drive unit, 113: NC machining program

Claims (2)

(57) [Claims] 1. A display device (104) having a keyboard for inputting data, a data file (109) storing data of a machine, a tool, a work, and the like; The storage unit (11) storing the NC program (114, 115, 116)
3) and the multi-series NC program (114, 115, 116)
Series selection method for selecting the operation or non-operation of each series
In the multi-sequence NC device having a stage (107a) , the sequence selection means (107a) selects a sequence according to a sequence selection state.
Information about the active series in the active state and the inactive state
And information on the non-effective series in the display device (1).
04) A method for displaying effective sequences in a multi-line NC device, characterized by displaying different colors on the top . 2. A display device (104) having a keyboard for inputting data, a data file (109) storing data of a machine, a tool, a work, etc., and a multi-line in which a machine tool operates for each line. A storage unit (113) storing an NC program (114, 115, 116), and the multi-series NC program (114, 115, 116)
Series selection method for selecting the operation or non-operation of each series
In the multi-sequence NC device having a stage (107a) , the sequence selection means (107a) selects a sequence according to a sequence selection state.
Information about the active series in the active state and the inactive state
And information on the non-effective series in the display device (1).
04) means for displaying on the different colors (40, 11)
0) A display device of an effective series in a multi-series NC apparatus, characterized by having the following.