JPS6111806A - Starting up method - Google Patents

Abstract

PURPOSE:To improve the efficiency of a system without using restoring operation to an original point by previously storing a start-up program in a nonvolatile memory of an NC device and executing the program when a power supply of the system is turned on. CONSTITUTION:The NC device system is constituted of an NC device 101, a machine tool 102, a power supply device 103, and a switching means 104, a start- up NC program including at least an instruction for restoring operation to the original point is previously stored in a memory PM of the NC device 101 and a timer TM for generating a switch-enable signal at a setting time if formed in the machine tool 102. If a power supply ON time is set in the timer TM, a switch enable signal is generated from the timer TM and the switching means 104 applies a voltage from the power supply device 103 to the NC device 101 and the machine tool 102. Then, a CPU in the NC device reads out the start- up program from the memory PM to execute the restoring operation to the original point or the like.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a start-up method for a numerically controlled machine tool system, and in particular, includes a power-on means for turning on the power of the numerically controlled machine tool system at a predetermined time. When the power of the system is turned on by the operation of the power-on means, the NC device relates to a startup method for returning the machine tool to the origin by executing a startup program including at least a return-to-origin command.

<Prior Art> As automation/unmanned NC operation becomes widespread, it becomes necessary to turn off the power after completing NC processing and turn on the power at the start of processing unattended.

For this reason, conventionally, a timer is provided, and the timer is used to automatically operate a power-on switch at a set time to turn on power to the numerically controlled machine tool system. However, the return-to-origin process when the power is turned on and other pre-processing processes still require operator intervention.

<Problems to be Solved by the Invention> However, it is troublesome for the operator and may be inefficient if the operator has to intervene each time the power is turned on to perform return to origin and other processing pre-processing.

From the above, it is an object of the present invention to be able to supply power supply voltage to a system at a predetermined time without operator intervention, and also to be able to automatically return the machine tool to its origin and perform other pre-processing processes. The goal is to provide a startup method.

1 is a schematic explanatory diagram of the present invention, in which 101 is an NC device, 102 is a machine tool, 103 is a power supply device, and 104 is a switch means." Memory of the NC device 101 A startup NC program including at least a home return command is stored in advance in the PM, and the machine tool 102 is provided with a timer TM that generates a switch enable signal when a set time comes.

Function> If the power-on time is set in the timer TM, a switch enable signal is generated from the timer TM at the set time, and the switch means 104 pulls the voltage from the power supply device 103 to the NC device 101 and the machine tool 102. Add. After the power supply voltage is completely applied to the NC device 101 and the machine tool 102, the processor CPtJ of the NC device reads the startup program from the memory PM, performs the NG processing according to the startup program, and at least Return the control axis to its origin.

In addition, if necessary, hydraulic warming-up can be performed on the machine tool.
If a certain M function instruction is inserted into the startup program to execute other preprocessing, these preprocessing will also be executed. Furthermore, if it is desired to position the machine movable part in advance to the machining start point after returning to the origin, it is sufficient to include the positioning command in the startup program so that it comes after the return to origin command.

<Example> .

2, 3, and 4 are detailed explanatory diagrams of the present invention, in which FIG. 2 is an overall system diagram, FIG. 3 is a block diagram of the NC device, and FIG. 4 is a process flowchart.

As shown in FIG. 2, the machine tool 102 includes a timer TM that generates a signal at a set time, a switch STP that instructs to turn on the power in a manner that starts a startup program, and a switch STP. When the timer TP is on, the time-up signal T is sent from the timer TP.
When UP occurs, switch 10 of switch means 104
4a to operate the power supply voltage from the power supply device 103.
A switch enable circuit PON I and a switch enable circuit PON input to the device 101 and the machine tool 102
It has a delay circuit DEL that outputs a power-on signal PON a predetermined time after I drives the switch 104a. Note that 104b in the switch means 104 is a switch for manually turning on the power supply voltage.

As shown in FIG. 3, the NC device 101 includes a processor CP
U, read-only memory ROM, random access memory RAM, nonvolatile memory PM, and NG tape T
NO data reader NCR that reads NG data from P
, an operation panel opp, a pulse distribution @I TP, a servo circuit SvC, and an interface INF. A startup program is stored in advance in the nonvolatile memory PM. Note that the startup program is configured as follows, for example: ON included; 028XOYOZO; mi R7. However, the alphabet O
is a word address word indicating that the following numerical value ΔΔΔ is a program number, and 028 is the position indicated by the subsequent alphabets x, y, z (in the example, 0.
Reference point return command to return each control axis to 0.0), Mroro° is M function command, ER is end of record.〇(a) Now, when the power supply voltage is turned on, the processor CPU starts the startup program. It is determined whether power supply voltage is applied to the NC device in a manner that activates the NC device. That is, it is checked whether the power-on signal PON (see FIG. 2) is input via the interface INF.

(See the flowchart in Figure 4 below).

(b) If the power supply voltage was turned on manually,
Perform normal power-on processing.

(C) However, if the power supply voltage is turned on in a manner that starts the program for starting τl/up (PON=
1), the processor internally enters memory operating mode. Also, assume that the processor is 1→i.

(d) After that, the processor CPU reads the NC data of the i-th block of the startup program from the nonvolatile memory PM and performs NC processing.

(e) First, the processor determines whether the NC data of the i-th block is end of record (ER).

(f) If it is not an end of record, it is determined whether it is a reference return instruction (028...).

(g) If it is a reference return command, the machine tool 102 is notified of the origin return (reference return) via the interface INF, and the pulse distributor I
The TP is instructed to generate a return-to-origin pulse, and a well-known return-to-origin process is performed. Note that since the return-to-origin operation is well known, its explanation will be omitted.

(g) On the other hand, in the determination of step (f), if the first NC data is not a reference return instruction, the NC
Performs predetermined NC processing according to the data. For example, N.C.
If the data is an M function command, the processor CPU outputs the M function command data to the machine tool 102 via the interface INF. Note that when the machine tool 102 finishes controlling according to the M function command data, a finish signal is input to the NC device 102 via the interface INF. Perform processing.

(h) When the processing based on the first NC data is completed, the processor CPU increments i by one step by i + 1→i, reads the next first NC data, and repeats the above processing.

(i) On the other hand, if the NC data is the end of record in the determination process of step (e), the processor CP
U recognizes that the NC processing based on the startup program has been completed, and thereafter internally changes the mode selected by the mode selection switch provided on the operation panel OPP to end the startup processing.

In the above explanation, one startup program is stored in the non-volatile memory PM, but the present invention is not limited to one, but multiple programs are stored, and a predetermined startup program is appropriately selected and executed to standby. It can also be configured to be in a state.

<Effects of the Invention> As described above in detail, according to the present invention, a start-up program including at least a return-to-origin command is stored in the non-volatile memory of the NC device in advance, and a numerical control program is executed at a predetermined time. A power-on means for turning on the power of the machine tool system is provided, and when the power of the system is turned on by the operation of the power-on means, the NC device executes the startup program to return the machine tool to its origin.

Since the system is configured to return to the standby state, the operator does not have to perform a troublesome return-to-origin operation every time the power is turned on, and the efficiency of the system can be increased. In addition, by including in the startup program not only a return-to-origin command (or an M function command to execute a predetermined machine operation, or positioning data to position the moving parts of the Ena machine at the start of machining), operator operations can be made easier. It is possible to improve the efficiency of the system.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of the present invention, FIGS. 2 to 4 are detailed explanatory diagrams of the present invention, FIG. 2 is an overall diagram of the system, and FIG.
The figure is a block diagram of the NC device, and FIG. 4 is a flowchart of the processing of the present invention. 101...NC device, 102...Machine tool, 103
...Power supply device, ...104 switch means, TM...Timer, P'M...Non-volatile memory patent applicant Agent for FANUC Co., Ltd.
Patent Attorney Chiki Saito Figure 1 Figure 2 °u Figure 3 Figure 4

Claims (2)

[Claims] (1) A startup program including at least a return-to-origin command is stored in the nonvolatile memory of the NC device in advance, and a power-on means is provided for turning on the power of the numerically controlled machine tool system at a predetermined time, and the power-on means If the system is powered on by
A startup method characterized in that the C device executes the startup program to return the machine tool to its origin. (2) Due to the operation of the power supply means, the NC device enters a memory operation mode in which NC processing is performed according to an NC program internally stored in the memory, and when processing by the startup program is completed in the memory operation mode, operation is performed. The startup method according to claim 1, wherein the mode is selected by a mode selection switch on the panel.