JPS59109909A - Numerical controller - Google Patents

Abstract

PURPOSE:To alter working order and to omit a work position freely by providing an area for storing data on the working order and data on whether work is performed or not in a memory stored with numeric data. CONSTITUTION:The number of work stages is written in the program starting address SA0 in the memory 2 of a numerical controller, and data areas DA1- DA4 sectioned at intervals of specific addresses in correspondence to work positions follow the address SA0. Starting addresses SA1-SA4 of the respective data areas are working order data areas where the working order is written, following addresses SA1+1-SA4+1 are areas for data on whether work is performed or not, and the remaining addresses are areas where numerical control data on a grinding system, table indexing position, grinding feed amount or grinding feed speed, etc., are written. A data input device 4 is provided with a ten-key 41, pushbutton switches for setting data on the number 42 of work stages, work point numbers 43, working order 45, whether work is performed or not 46, numerical control data numbers 47, etc., and switches for ending 45 and writing 48, altering the working order easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a numerical control device for a machine tool that processes multiple locations on a workpiece.

This type of numerical control device stores numerical control data for each machining location in advance in memory in the order of machining, and during automatic operation reads out the numerical control data sequentially and positions the movable table on which tools and workpieces are placed. The machine is configured to machine a workpiece by controlling the

By the way, many workpieces have similar shapes, and it is often possible to use existing control data without modification by omitting specific machining locations.

However, as described above, conventional numerical control devices perform machining in a fixed order stored in a memory, so it is necessary to input new control data even for workpieces of similar shapes.

In order to eliminate this inconvenience, there is a numerical control device having a so-called block delete function.

This device writes the switch numbers attached to multiple block delete switches in advance in the data area corresponding to the machining parts that may be omitted, and during automatic operation, the data stores the delete switch number that is turned ON. This is to skip areas and omit processing.

In this method, it is necessary to predict machining points that may be omitted in the future and to write the delete switch number into the corresponding data area in advance at the same time as inputting numerical control data, which requires time for programming work. Moreover, it is only possible to skip successive data areas, but it is not possible to significantly change the entire machining order. Therefore, for the purpose of machining sequentially starting from the required accuracy, it is possible to change the order in which numerical control data was input. If you wanted to perform processing in a different order, you had to re-enter the numerical control data.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a numerical control device that allows the machining order to be freely changed and machining locations to be omitted, and which is easy to program.

That is, the numerical control device of the present invention stores a machining order data area for storing machining order data and machining presence/absence data in e-4-7-4-A-J4 in the memory that stores numerical control data for each machining location. A processing/presence data area is provided.
The above data can be easily changed using a data input device.

Hereinafter, the configuration and operation of the present invention will be explained with reference to the illustrated embodiments.

FIG. 1 shows the configuration of a numerical control device according to the present invention. In the figure, 1 is an arithmetic unit, 2 is a memory, 3 is a P/L'nu generation circuit, 4 is a data input device, and 5 and 6 are servo motor drive circuits. , 7 is a grinding machine.

It is memorized in A. During automatic operation, the above numerical control (3) data is read out, pulses are distributed to the servo motor drive circuit 5.6 via the pulse generation circuit 3, and the servo motor 51.61 is driven.

On the bed 71 of the grinding machine 7, the grindstone heads 7 are movable relative to each other.
2 and a table holder 3 are provided.

The grindstone head 72 is moved by the servo motor 51, and the table 73 is moved by the servo motor 61. Headstock 7 placed on tape/l/73
There are four machining stations P1 and P in the axial direction between the number and the tailstock 75.
A multi-stage workpiece W having numbers 2, P3, and P4 is rotatably clamped. A grinding wheel 76 is rotatably mounted on the grinding wheel head 72, and by controlling the relative position of the headstock 74 and the grinding wheel head 72, the outer periphery of the grinding wheel 76 is placed at each processing location P1 to P4 of the workpiece W. Grinding is performed by bringing them into contact.

FIG. 2 shows the contents of the memory. The number of machining locations, that is, the number of machining stages is written to the program start address SAO in the memory 2. From address SAO onward, data areas DAI, DA2, DA are divided into (4) predetermined addresses corresponding to machining points P1 to P4.
3. DA4. Starting address SA of each data area
I, SA2, SA3, and SA4 are machining order data areas where machining order data is written.
+1 ), (SA2+1 ), (SA3+1 ), (S
A4+1) is a processing/non-processing data area in which processing/non-processing data is written. The remaining addresses are areas for writing numerical control data such as the grinding method, table index position, grinding method amount, or grinding method speed.

In this embodiment, the number "4" indicating that the number of processing stages is four is stored at the address SAO, and the numbers "2", "3", "1", "4" indicating the processing order are stored at addresses SA1 to SA4. ” is what I remember. Also, address (SA1+1) ~ (SA4+1
) stores numbers ``1'' and ``0'' indicating whether processing has been performed or not.

Here, the number "1" indicates processing.

FIG. 3 shows the arrangement of input switches of the data input device 4. 41 in the figure is a numeric keypad switch, 42.43.44.4
5.46.47.48 are push button switches, 42 is for setting machining stage number data, 43 is for setting machining location data, 44 is for machining order data setting, 46 is for machining presence/absence data setting,
4W is each switch for setting numerical control data, and 45W is each switch for setting numerical control data.
is an end switch, and 48 is a write switch.

FIG. 4 shows a flowchart of operation bag @1 when each of the above data is input using the above data input device number.

In steps 801 and 804, the pressed data setting switch 42 or 43 is determined, and if it is the data setting switch 42, the process advances to step 801 and step 802, and the switch 48 is pressed to write the number of machining steps set with the numeric keypad switch 41. Program start address 5A at the timing of pressing
0 (see Figure 2). If it is the processing part data setting switch 43, step 804 is the step 805.
, and use the numeric keypad switch 41 to select each processing location P1 to P.
4 (see FIG. 1) is input, the first address SAI to SA4 of the corresponding data area DAI to DA4 is selected.

In steps 806, 80B and 810, the pressed data switch 44, 46, 47 is determined, and if it is the processing order data setting switch 44, the process advances from step 806 to step 80M, and the processing order set with the numeric keypad switch 41 is executed. is stored in the selected starting addresses SAI to SA4 at the timing when the write switch 4B is pressed. Processed address SA
I~Next address of SA4 (SAl+1)~(SA4+:
L). Numerical control data setting switch 47
If so, the numerical control data is stored in a data area at an address corresponding to a predetermined number assigned to the type of numerical control data.

FIG. 5 shows a flowchart of the arithmetic unit 1 when automatic operation is performed based on each data stored in the memory z according to the above procedure.

In step 901, a sequence counter GOC is set to 1 (+7). In step 902, the order counter GOC
The address (SA1+
1) to (SA4+1), and if there is processing, step 903 is followed by step 9.
04. Proceed to 905 and select the selected data area DA1~
Servo motor 51.61 based on numerical control data of DA4
After distributing pulses to (see FIG. 1) and moving the table 73 to a predetermined position, the grindstone head 76 is advanced to perform grinding.

If there is no processing, step 903 or step 906
Hejyump. In step 906, the order counter GO
C is incremented, and in step 907, the order counter GO
It is determined whether the count value of C has become larger than the machining stage number data stored at address SAO, and steps 902 and subsequent steps are repeated until it becomes larger. ) Grinding is carried out sequentially.

That is, in this embodiment, the machining of the machining location P3 is omitted, and the machining location P2 and the machining location P4 are changed from the machining location P1.
Grinding is performed in this order.

If it is necessary to change the machining order, as shown in the flowchart in FIG.
(see figure), set the changed order using the numeric keypad switch 41, and press the write switch 48.

When changing the presence or absence of processing, similarly specify the number of the processing location to be changed, and press the processing presence/absence data setting switch 4.
After pressing 6, the user just needs to set the changed data, that is, the number "1" or "0" with the numeric keypad switch 41, and then press the write switch 4B.

As described above, the numerical control device of the present invention is provided with a machining order data area for storing machining order data and a machining presence/absence data area for storing machining presence/absence data in a memory that stores numerical control data for each machining location. By making it possible to easily change each data using a data input device, it is possible to change the machining order or omit machining parts freely and easily depending on the workpiece, and numerically control when machining similar workpieces. This has resulted in a significant reduction in data modification time.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of the present invention, Fig. 2 is a diagram showing the contents of the memory, Fig. 3 is a layout diagram of input switches of the data input device, and Figs. 4 and 5 are flow charts of the arithmetic unit. It is. 1... Arithmetic bag @ 2... Memory 4
...Data input device 7...Grinding machine DAI, DA2, DA3, DA4...Data area (11) Fig. 2 Fig. 3

Claims (1)

[Claims] In a numerical control device for a machine tool that processes multiple locations on a workpiece, a data area for storing numerical control data for each processing location, a processing order data area for storing processing order data representing a processing order for each processing location, A machining/non-machining data area for storing machining/non-machining data for each machining location is provided in the storage device, input means for inputting the numerical control data, and input means for inputting machining order data;
An input means for inputting machining presence/absence data, a sequence counter that increments at the end of machining and instructs the machining order, and machining presence/absence data that indicates whether machining is performed at a machining location in a machining order that matches the machining order specified by the sequence counter. means for incrementing the order counter in the case of no machining, and reading and executing numerical control data in a data area corresponding to a machining location having a machining order that matches the machining order indicated by the order counter. A numerical control device comprising means.