JPS6037008A - Controller for numerically controlled machine tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a control device for a numerically controlled machine tool equipped with the following devices.

a) a computing unit (CNC) containing at least one microprocessor, an operating system storage device and a subroutine storage device configured as a write/access storage device, and provided with an interface for connection to a management computer;
.

b) A memory programmable control unit that can be connected to the '@Minobe via an interface and is connected to a display device, and that functions as an interface between the department and the machine tool, and C) an arithmetic control unit. A measuring device connected to a machine that detects the dimensions of a workpiece or tool.

[Prior art and its problems]

This type of machine tool control device has conventionally been based on, for example, German patent specifications. No. 2927354, or pages 337 to 341 of Nomens Times 1979.

It is especially known from its FIG.

It is also known to equip a machine tool with a measuring device capable of measuring the dimensions of a tool, a workpiece, or the machine itself 1, such as a chamfer or rim.

For example, it would be very advantageous if various measurements such as processed items could be carried out during the unmanned 3rd work break, and the chain-side fixed values could be modified and stored as necessary. It is. The data thus obtained can be compiled out at the end of the downtime and used, for example, for trend analysis or quality control, or as information on the condition of the machine tool. Furthermore, by combining various measured values obtained from the workpiece or tool force 1,
For example, it is also desirable to graphically display specific f) trends on the display device of the control unit. However, the conventional apparatus has the disadvantage that the numerical control apparatus must have a sufficiently large storage capacity in order to realize the desired procedure as described above.

[Purpose of the invention]

It is an object of the present invention to provide a control device that satisfies the above-mentioned needs and also streamlines the cost of the storage device required within the numerical control device.

[Hair point of invention]

The present invention achieves the above object with the following features.

Divide the subroutine program storage area into two sections that are variably allocated as necessary, compress addresses in the first section, and store one or more subroutine programs in the second section. The measurement values output from the device can be written, and the partition boundaries in the subroutine storage area can be moved by external commands.

[Embodiments of the invention]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

This numerical control device for machine tools has a dedicated calculation section (CNC
)1. and a memory programmable external control section 2 that functions as an interface. The calculation unit 1 exchanges data with the machine tool main body, for example, when controlling the posture of the machine tool, as shown by arrow 5 in Figure 1, and for other auxiliary functions, it exchanges data with the machine tool body via the control unit 2. Data is exchanged as shown at 5. Although the calculation section is shown in a simplified manner, at its core there is at least one microgross unit.11. It includes an operating system storage device 12 and a storage/readout storage device 1L13 capable of storing subroutine programs. In addition to local buses for individual components, Chuten data path (NC path) 1
4, the host management computer 32 and printer 31 can be connected to the data bus 14 via the interface 15. The memory programmable control unit 2 also includes a microprocessor 21 and a storage device n, and the bus (PC bus) 25 of both parts is connected to the data bus (NC bus) of the arithmetic unit l via the path) 14.

The control unit 2 also has a graphic display device. Other components, such as an operation panel and mutual input/output devices with the machine tool, are not shown here for the sake of brevity. A peripheral device 1 such as a printer 6 or a similar device is connected to the control unit 2.
It is possible to connect to the Internet via Infuss.

In addition, data can be exchanged between the workpiece and tool dimension measuring device 4 installed in the machine tool and the arithmetic control section l.
At this time, the core of the present invention is that a storage capacity for the chain-side constant value inputted from the measuring device 4 is additionally generated inside the arithmetic and control unit l.

This means that the storage area 13 is divided into two compartments, namely the subroutine and the technical specifications of the workpiece.
This is achieved by dividing into a dedicated area 131 and a background area 132 in which various measured values of individual workpieces can be stored. The boundary 133 between these two areas is variable as represented by a changeover switch 134 in the figure, and this means that an external command, that is, an input from the management computer 3 or an operation panel device, etc. This means that the area boundary 133 is adjusted as appropriate according to the command given. When a command is received from the outside, address compression is executed in accordance with the command, and the subroutine program and various measured values are stored in each of the two separated sections. The measured values stored in the background area 132 can be output to the printer 6 via the memory-programmable control 2, for example at the end of a work break. In any case, it is also possible to prepare a control program in the control unit 2 in advance, process various measured values in the background area 132 using the control program, and draw an appropriate characteristic curve on the display device. It is.

〔Effect of the invention〕

In this invention, the main memory area is divided into two sections with variable boundaries, and the boundaries can be adjusted by external commands, so a write/read memory (RAM) is added to the control section to provide constant readout memory. Moreover, it is now possible to move the boundary as appropriate depending on the machine tool situation and various measurement possibilities such as chuck and tool dimension measurements. And management 61 computer 1 that outputs control information to machine tools
)NC) is connected to a numerical memory, the control computer (DNC) can appropriately control the division boundaries according to the workpiece, the number of required measurement points thereof, and the length of the subroutine program.

Furthermore, the user can process the workpiece according to the number of peripheral equipment.

It is also possible to memorize only the values related to the number of lots or the status of daily shift work, etc., and record them as appropriate.For example, if there are 8 printers for 8 machine tools, or if there is only 1 printer. It is also now possible to change the division of the main memory area depending on whether there is a main storage area or not.

In addition, if there is no need to store measurement values, for example because the machine tool is not equipped with a measuring device or because it is not used, it is possible to easily eliminate the division boundaries in the main memory area. .

In addition to the various advantages mentioned above, the main storage space is also smaller.

Another major feature is that the background area can be used not only for measurement, but also as a star for microprocessors during complex and time-consuming repetitive calculations.
For example, it can be advantageously used in a coordinated transfer process of an electronic control device that automatically aligns workpieces.

[Brief explanation of drawings]

The figure is a simplified diagram of an embodiment of the invention. l: Arithmetic unit, 2: Memory programmable control unit, 3:
Management computer (DNC), 4: Machine tool measuring device, 6:
printer, 11: microprocessor, 13: main storage area, 131: first partition, 132 second second partition, 13
3: Parcel boundary.

Claims (1)

[Scope of Claims] 1) At least one microprocessor, which is connectable via an operating system storage device and a subroutine storage device configured as a write/read storage device, and to which a display device is connected, and which is connected to an arithmetic unit; In a numerically controlled machine tool equipped with a memory programmable control section that functions as an interface with the machine tool and a measuring device that is connected to an arithmetic control section and detects the dimensions of a workpiece or tool, a subroutine program The storage area is divided into two partitions that are variably allocated as needed, and one or more subroutine programs can be stored in the second partition by suitably compressing addresses in the first partition. A numerically controlled machine tool characterized in that the measured values output from the measuring device can be written respectively, and the division boundaries in the subroutine storage device can be moved by commands input from an external force. control device. 2. A control device for a numerically controlled machine tool according to claim 1, characterized in that partition boundaries within a subroutine storage area are controlled by a host management computer. 3) tPje'f A control device for a numerically controlled machine tool according to claim 1, characterized in that the second section can be used as a working storage area of a microprocessor in a performance area. . 4) A control device for a numerically controlled machine tool according to claim 1, characterized in that division of the storage area can be resolved. 5) In the control device according to claim 1, the stored measurement value is processed by the memory programmable control unit and then output to the printer. Or a control device for a numerically controlled machine tool, characterized in that it is used to control a display device.