JPH0336606A - Numerical controller - Google Patents

Abstract

PURPOSE:To execute more various controls by changing a system in the course of operation by providing a means for rewriting a control axis or a principal axis belonging to a system which is being operated in a storage means to those of other system in accordance with designation of a working program. CONSTITUTION:The subject controller is constituted by providing a code (for instance, a format shown in the figure) 24 for designating a relation of a combination of axes and a system as an instruction of a working program, and also, providing a system combination area rewriting processing part 11 (execution of a control program 25 of a CPU 1). In this regard, by the instruction 24, a function is allowed to correspond to a numerical value of G or below, an axial name is instructed by the subsequent alphabet X and Y, and the number of the system is designated by the subsequent numerical value. According to this constitution, by rewriting the contents of an axial name/port address store area 22 by system by designating the working program, a control axis or a principal axis belonging to some system being in the course of automatic operation can be changed to a control axis or a principal axis of other system.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a numerical control device, in particular, a system in which a combination of a plurality of control axes or a plurality of main axes is made into independent systems, and machining programs corresponding to each system are simultaneously multiplexed. This relates to operational control processing.

[Prior Art] FIG. 8 is a block diagram showing the hardware configuration of a numerical control device. In the figure, (1) is a CPU, (2) is a memory, and (3) is a keyboard. (4) is an interface circuit which takes in a contact signal from an external switch to the CPU (1) via a bus (5) or outputs a contact signal to a lamp solenoid pulp or the like. (4
a) is the data I10 that exchanges data with the outside.

(6) is an interface, which connects the CPU side and the servo part, or outputs a movement command from the NC side and takes in position data from the servo side. (7) is a servo control circuit that outputs a control voltage corresponding to the deviation between the position command data passed from the CPU (1) through the interface (6) and the position detection data from the detector (10) to the servo amplifier (8). ), and the servo amplifier (8) drives the motor (9) to follow the command position. These interfaces (8), servo control circuit (7), servo amplifier (8), motor (
9) and the detector (lO) constitute a drive section for one axis in one set, and the main axis has a similar structure, and multiple drive sections are connected to the CPU (1) through the bus (5>). are combined.

FIG. 9 is a diagram conceptually illustrating the relationship between the CPU (1) and the memory (2) of the numerical control device in FIG. 8. The memory (2) is a block area as described below. (20) is the area where the control program that controls the entire system is stored. (21)
is an area where machining programs are stored, and this part is made up of RAM. This area (21) has a keyboard (3) or data 1/0 (4a).
The machining program is stored through the . (22) is an area in which axis names and boat addresses are stored for each operating system, and the data is input using the keyboard (3) and backed up by a battery.

Next, the operation will be explained. In the area (21) where machining programs are stored, machining programs are stored for each system, and by executing the control program (20), the CPU (1) determines the boat address of the area (22),
Referring to the axis name and system relationship, the command value from each machining program is written to the address of the boat (23) of the corresponding axis name. Processing of the machining program is performed by time sharing as multiple tasks for each system.

In this way, by simultaneously operating multiple machining programs for each combination belonging to each system and outputting control data corresponding to each axis to the interface (6), each operation system can be controlled simultaneously and independently. are doing.

[Problems to be Solved by the Invention] In the above-mentioned conventional numerical control device, data on axis combinations and system relationships in area (22) of memory (2) are set or stored as parameters other than when the machine is operating. The problem is that it is not possible to change the shaft-to-shaft combination during operation, and even if there is a request to change it during operation, such requests cannot be responded to. Ta.

This invention was made to solve this problem, and it provides a code that specifies the relationship between axes combination and system as a machining program command, and processes a combination of axes belonging to a certain system during operation. The object of the present invention is to provide a numerical control device that enables more flexible control by allowing changes to be made by commands from a program, and by making it possible to convert operations between two main axes using external signals.

[Means for Solving the Problems] A numerical control device according to the present invention (claim 1) has a storage means in which the relationship with the control axis or main axis to which each system belongs is stored, and each system can be operated independently. In a numerical control device that operates by simultaneously processing machining programs corresponding to each system in a multiplex manner, the control system that belongs to a certain system during automatic operation is selected from among the contents stored in the storage means according to the designation of the machining program. It has means for rewriting the axis or main axis to a control axis or main axis of another system.

Further, the numerical control device according to the present invention (claim 2) has means for rewriting the contents of the memory in the storage means so as to replace the operations of the two main axes with each other by inputting an external signal.

[Function] In this invention (claim 1), the control axis or main axis of the system in operation can be changed by rewriting the contents of the storage means according to the designation of the machining program.

In this invention (claim 2) as well, by manually rewriting the contents of the storage means using an external signal, the operations of the two main shafts during operation can be switched.

[Embodiment] FIG. 1 is a conceptual diagram of a numerical control device according to an embodiment of the present invention, and its hardware configuration is the same as that in FIG. 8, so a description thereof will be omitted. In FIG. 1, (24) is an instruction specifying a combination of systems and axes, and is stored in an area (21) where machining programs are stored together with various other instruction codes.

(25) is the area where the control program is stored (2
This is a control program for the command code added to 0) that specifies the combination of system and axis for each system.

This is for rewriting the area (22) that stores the combination of axes according to the instructions of the machining program.

By executing the control program (25), the CPU (1) conceptually has a system combination area rewriting processing section (11) as shown in the figure.

FIG. 2 is a diagram showing an example of the code format of the command (24) specifying the combination of system and axis. The function of this invention corresponds to one value less than or equal to G (in this example, 300
), followed by the alphabets x and Y to designate the axis name, and the subsequent numeric value to designate the system number.

FIG. 3 is an explanatory diagram of a table (22a) showing the relationship between systems and axis names stored in the area (22).

A fixed area is taken up for each system number, and the axis names belonging to that system are stored in order.

FIG. 4 is an explanatory diagram of a table (22b) showing the relationship between axis names and port numbers stored in the area (22), and these data are stored in advance as parameters.

Figure 5 shows the system combination area rewriting processing unit (1) in Figure 1.
1> is a flowchart showing the operation. As shown in the figure, it is determined whether or not the instruction code shown in Figure 2 is included in the machining program, and if it is determined that it is included,
Search the corresponding part of the table (22a) in Figure 3 using the axis name and system number included in the instruction code,
Rewrite the axis name registration.

To execute the subsequent movement command, the output port is determined by referring to the rewritten table (22a) in FIG. 3 and the table (22b) in FIG. is written, and each axis is controlled according to the command value.

FIG. 6 is an explanatory diagram showing an example of application of the above embodiment. In the figure, (51) is a movable table that is supported on three axes and can be moved in three directions (X, Y, X) relative to the workpiece according to the machining program. (52> is a rotary table equipped with two main shafts.
3) is the main axis A, and (54) is the main axis B.

First, connect the 3 axes of table <51> and spindle A (53) to 1
It operates as one system and performs processing. Next, mechanically rotate the rotary table (52) 180" and spindle A (53) and spindle B (54) (add a separate tool).
Replace. Here, the timing is determined using the M code (auxiliary function), etc., and the combination of axes is changed, for example, using the command code in Figure 2 so that the three axes of the table (51) and the main axis B (53) become one system. do. From then on, the system can be controlled.

The main spindle A (53) can be operated as a separate system for the next machining step 11 (tool change), etc.
Next, mechanically, the main shaft A (53) and the main shaft B (54)
It is also possible to continue processing in the same way by replacing the In this way, the operation of attaching a tool to the spindle and the machining operation can be performed separately, thereby reducing machining time.

By the way, in the above embodiment, an example was explained in which the combination of system and axis name was changed according to the instructions of the machining program. (For example, main shaft A and main shaft B) can be interchanged. The control program (2o) in FIG. 1 is indicated by the symbol (2B).
This is a program for exchanging specific axes using an external signal, and as in the case described above, the CPU (1) conceptually executes the boat number versus axis name rewriting processing unit (12) by executing the program. It can be understood as having.

FIG. 7 is a flowchart showing the operation of the boat number versus axis name rewriting processing unit (12). When a specific external signal is input manually, the table (22b) in FIG. 3 is rewritten according to the control program (26), By exchanging the address and relationship between spindle A and spindle B, the operations of the two spindles can be exchanged.

[Effects of the Invention] As described above, according to the present invention, the combination of axes belonging to a certain operation system can be changed during operation by commands of a machining program or external signals, so that more diverse control is possible. A capable numerical control device can be obtained, more flexible control is possible, and in particular, machining time can be shortened.

[Brief explanation of drawings]

Fig. 1 is a conceptual diagram of a numerical control device according to an embodiment of the present invention, Fig. 2 is a diagram showing the format of a program for a system combination change command, and Fig. 3 is a diagram showing the relationship between each system and axis name. Fig. 4 is an explanatory diagram of the table showing the relationship between each port and axis name, Fig. 5 is a flowchart showing the operation of the system combination area rewriting processing section, and Fig. 6 is an explanatory diagram of the table showing the relationship between each port and axis name.
7 is a flowchart showing the operation of the boat number versus axis name rewriting processing unit; FIG. 8 is a block diagram showing the hardware configuration of the numerical control device; FIG. 9 is a diagram showing an application example of the above embodiment; FIG. is a conceptual diagram of a conventional numerical control device. In the figure, (11) is a system combination area rewriting processing unit, (12) is a boat number versus axis name rewriting processing unit, (
20) is the control program, (21) is the machining program area, (22) is the axis name/port address storage area for each system, (24) is the system combination change command, (25) is the system combination area rewrite processing program, (2G ) is a boat number-to-axis name rewriting program. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (2)

[Claims] (1) Each system has a storage means that stores the relationship with the control axis or main axis to which it belongs, each system is an independent operation system, and machining programs corresponding to each system are processed simultaneously and multiplexed. The operating numerical control device has a means for rewriting a control axis or spindle belonging to a certain system during automatic operation to a control axis or spindle of another system among the stored contents of the storage means, according to the designation of a machining program. A numerical control device featuring: (2) Each system has a storage means that stores the relationship with the control axis or main axis to which it belongs, each system is an independent operation system, and machining programs corresponding to each system are processed simultaneously and multiplexed. In the operating numerical control device, by inputting an external signal, among the contents stored in the storage means,
A numerical control device characterized by having means for rewriting the operations of two main axes so as to interchange them with each other.