JPH04141353A - Management device for production quantity - Google Patents

Abstract

PURPOSE:To improve a work efficiency, by making the target production quantity of a work as a 1st set value, making an operational number less than the target production quantity as a 2nd set value, and information to an operator that the production of the works in the numbers set respectively is completed, when the production quantity of the work becomes more than the 2nd, 1st set values respectively. CONSTITUTION:A 1st set value becoming the target production quantity of a work, and a 2nd set value which is an optional number less than the target production quantity, are set in advance on a setting means. The production quantity of the work corresponding to the accumulated number stored in a counter, and 1st and 2nd set values set by the setting means are then compared respectively by a comparison means, and when the production quantity of the work becomes more than the 2nd set value and becomes more than the 1st set value, the completion of the production of the works in the numbers set respectively is informed to an operator by an informing means. The work efficiency of the operator is thus improved.

Description

[Detailed Description of the Invention] Purpose of the Invention [Field of Industrial Application] The present invention relates to a production control device, and more specifically, to a production control device that controls the production amount of workpieces processed by a machine tool by executing a processing program. Regarding equipment.

[Prior Art] Conventionally, in NC machine tools, workpieces have been machined by controlling the drive of the machine tool by executing a machining program. A counter device is used as a device for managing the production amount of processed parts. This counter device increments the counter value by a predetermined number each time one machining program is completed, and notifies the operator that all machining has been completed when the counter value reaches the preset target production quantity. It is something to do. In other words, when the machining program is executed once (the number of machined parts to be machined is incremented by 1), when the cumulative number, that is, the total quantity of machined parts produced reaches the target production quantity (2) the display lamp etc., to notify the operator of the completion of all machining.In addition, information such as the preset target production quantity, one-time increment quantity, and sequentially changing counter values are stored in the memory of the NC device. This is also displayed on the CRT screen.The above settings are made by the operator using the keyboard.

When notified that all machining has been completed, the operator instructs the operator to start machining the next part according to the plan.

In addition, such counter devices are used not only to manage the production volume of processed parts, but also to manage the life of tools, etc.
The tools used are replaced when a predetermined amount of machining is completed.

[Problems to be Solved by the Invention] However, even if you try to start machining the next part after receiving a notification indicating that all machining is completed, you will have to change tools, prepare jigs, etc.
Since preparation for machining the next part is required, it is not possible to immediately start machining the next part, and the operating rate of the NC machine tool decreases. For this reason, conventionally,
The problem arises that the operator has to constantly monitor the counter value displayed on the CRT and instruct the preparation of the next set-up some time before the target production quantity is reached, reducing the operator's work efficiency. The purpose of the production volume control device of the present invention is to solve the above-mentioned problems and improve the work efficiency of the operator.

Structure of the Invention [Means for Solving the Problem] As illustrated in FIG. 1, the production volume management device of the present invention manages the production volume of workpieces processed by a machine tool by executing a machining program. The production amount control device includes a counter that adds or subtracts a predetermined number each time the machining program is executed and stores the cumulative number; a setting means for presetting a small arbitrary number as a second setting value j; a production quantity of workpieces corresponding to the cumulative number stored in the counter; and the first setting value and the second setting value. a comparison means for comparing the respective values with the comparison means; when the production quantity of the workpiece is equal to or greater than a second set value; and when the production quantity of the workpiece is equal to or greater than a first set value; The gist of the present invention is to include a notification means for notifying an operator that production of a set number of workpieces has been completed.

[Operation] In the production volume control device of the present invention having the above configuration, the counter adds or subtracts a predetermined number each time the processing program is executed, and stores the cumulative number.

Therefore, the cumulative number stored in this counter corresponds to the production quantity of the workpiece. On the other hand, the setting means is set in advance with a first setting value that is a target production quantity of the workpiece and a second setting value that is an arbitrary number smaller than the target production quantity.

] The production quantity of the workpiece corresponding to the cumulative number stored in the counter and the first set value and the second set value set by the setting means are respectively compared by the comparison means.The production quantity of the workpiece When it becomes equal to or greater than the second set value and when it becomes equal to or greater than the first set value, the notifying means notifies the operator that production of the respective set number of workpieces has been completed.

In other words, when the processing program is repeatedly executed (secondarily, the production quantity of the workpiece increases and reaches the second set value or more, the operator is notified that the production of the workpiece that exceeds the second set value has been completed). When the production quantity increases and reaches the first set value or more, the operator is notified that the production of the first set value or more has been completed, that is, the production of the workpiece has been completed.

As a result, the operator can recognize not only that the production of the workpiece has ended, but also that it is a predetermined period of time before the end of production.

[Example] In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the production amount control device of the present invention will be described below.

FIG. 2 is a block diagram showing a schematic configuration of an NC device that implements production volume management processing as an embodiment 7. The NC device is a central control device (hereinafter referred to as mask CPIJ)
1. ROIV17. RAM3. keyboard 4
．． CRT5. External communication department6. Motor control section 7, AT
C control section 8. It includes an external signal control unit 9 and a bus 0 that interconnects these.

The ROM 2 stores control programs and various data that govern the operation of the NC device itself. RAM3 has NC
A machining program for driving and controlling the machine tool (path shown), various data, and a production counter described later are stored. The keyboard 4 is used to set various data necessary for machining, to set the machining program 1\, and to set counter values, which will be described later, and is made up of a numeric keypad and the like. CRT5 is RA
This is a display that displays the machining program stored in the M3, various data, and the status of the counters described later. The external communication section 6 is a communication interface using R3232C, etc., and inputs the machining program 1 from the outside and transfers it to the RAM.
Store in 3. Motor control section 7. The ATC control unit 8 is a control circuit connected to the motor of the NC machine tool and the automatic tool changer (1I18 in the figure), respectively, and drives and controls them in accordance with the machining program 1\. Two indicator lamps 11 and 12 are connected to the external signal control section 9. The indicator lamp 11 lights up in response to a finish signal (Call 1), which will be described later, and the indicator lamp 2 lights up in response to a finish notice signal, which will be described later, indicating that all parts have been processed and that the machining of the preset number of parts has been completed. and the operator 17-, respectively.

Next, a counter (hereinafter referred to as a production counter) for managing the production amount of processed parts will be explained with reference to FIG.

The production counter 20 is provided in a predetermined storage area in the RAM 3 and includes a current counter C2, a unit count number N, an end counter E, and a notice counter P. The current counter C stores a counter value that represents the production amount of processed parts, which changes sequentially each time a processing program is executed. Unit number 1 to number N represent the number of machined parts produced by executing one machining program, and are each set for each machining program. Therefore, the value obtained by multiplying the unit count number N by the number of executions of the machining program corresponds to the current count I~ value of the counter C. Note that the current counter C is normally set to an initial value of 0, but the initial value may be set to any value, and in that case, the value is the sum of the initial value.

The end counter E stores the preset target production quantity of machined parts (total number of machined parts). For example, if the production plan for machined parts is 500 pieces, the value of the end counter E becomes 500. [Notice] Counter P is provided to notify the operator of the end of production of all processed parts, that is, a predetermined number of processes before the end of production of all processed parts. is set.

The production counter 20 configured as described above has a current counter C2, a unit count number N, and an end counter E.

The advance notice counter P is displayed on the ORRb2 screen 5 when input from the keyboard 4 (as shown in Figure 4). Indicates the current setting mode of counter C (indicated by a star).

Next, the production amount management process executed by the NC device will be explained. FIG. 5 is a flowchart showing a production amount management routine, which is activated by a predetermined operation from the keyboard 4.

First, one block (one instruction unit) of the machining program
(Sl○○). Next, it is determined whether the read] block is a program termination instruction (S
110). In this embodiment, the determination is made based on whether the instruction is M2O or MO2. l'NOJ, that is, if it is determined that it is not a program termination instruction code,
Executes the instruction code of that one block (S
120).

For example, motor control and ATC control are executed.

Step 1] If the determination in 0 is "YES", the current counter C is updated (S130). That is,
When it is determined that the machining program has ended, the counter value of the current counter C (unit count number N) is added. Next, the value of the current counter C after this addition is added to the advance notice counter P.
It is determined whether the value is greater than or equal to the value (S140). If the current value of the counter C is greater than or equal to the value of the notice counter P, the end notice signal is turned on and the display lamp 12 is turned on (
S 150). On the other hand, if the current value of the counter C is less than the advance notice counter P, the process skips step 150 and proceeds to step 160.

In step 160, it is determined whether the value of the current counter C is greater than or equal to the value of the end counter E. If the current value of the counter C is greater than or equal to the value of the end counter E, turn 1 to turn on the end signal and turn on the display lamp 11 (S1
70). In this case, the production quantity of processed parts has reached the target production quantity, and the operator is notified of the completion of processing by lighting the indicator lamp 11. On the other hand, if the current value of counter C is less than end counter E, step]70
The process skips step 180 and proceeds to step 180.

In step 180, it is determined whether the count end signal is off. This determination is "NO" only when the process of step 170 is executed, and in that case, the present routine is ended. On the other hand, the judgment at step 180 is “Y”.
ES'', that is, when the production quantity of processed parts has not reached the target production quantity (value of end counter E), the process returns to step 100 and the above-mentioned process is repeated.

As explained above, according to the NC device that performs production control processing, each time a machining program is executed, the count value of the current counter C is incremented by the unit count number N, and the counter value is set in advance. When the value exceeds the value of the advance notice counter P, a display lamp 12 is turned on to notify the operator of the notice of termination. Therefore, the end notice is announced a predetermined period before the end of the production of the machined parts, so the operator does not have to constantly monitor the production quantity of the machined parts as in the past, and the end notice is notified by the indicator lamp 12. All you have to do is give instructions to prepare for the next part machining based on the notification. As a result, the operator's work efficiency can be improved.

Moreover, the operating rate of the NC machine tool can also be improved.

Furthermore, the notification timing of the termination notice can be changed arbitrarily by setting the notice counter P, so it can be arbitrarily set according to the time required for setup.

Therefore, it is possible to set the optimum timing for starting setup.

When the production quantity of processed parts reaches the target production quantity, processing is finished and the display lamp] is turned on to notify the operator of the completion of processing.Performs output management, tool life management, etc. be able to.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments in any way. For example, the present invention may be configured using a buzzer or the like in place of the indicator lamps 11 or 12, or using a unit count number N. It is also possible to increment or decrement by one without departing from the scope of the present invention, and it goes without saying that the present invention can be implemented in various ways without departing from the gist of the present invention.

(2) Effect of Peeking As detailed above (2) The production volume control device of the present invention (according to this, the operator is able to recognize not only the end of production of the workpiece but also the fact that a predetermined period of time has passed before the end of production). Therefore, the operator no longer needs to constantly monitor the production quantity of processed parts as in the past, and only needs to instruct preparations for the next part processing based on the first notification from the notification means. As a result, the operator's work efficiency can be improved.Also, since the notification timing can be set arbitrarily, it is possible to set the optimal timing for preparing for the next machining operation.

[Brief explanation of the drawing]

Fig. 1 is a block diagram illustrating the basic configuration of the present invention, Fig. 2 is a schematic block diagram of the NC device, Fig. 3 is a block diagram of the production counter, and Fig. 4 is an explanation showing a screen displayed on a CRT. FIG. 5 is a flowchart showing the production amount management routine. 1...Master CPU 2...ROM3...RA
M A...Gee board 9...External signal control section 11.12...Display lamp 20...Production counter C...Current counter N...Unit count number F...End counter P...Notice counter

Claims (1)

[Scope of Claims] 1. In a production amount management device that manages the production amount of workpieces processed by a machine tool by executing a processing program, each time the processing program is executed, a predetermined number is added or subtracted. a counter that stores the cumulative number; a setting means that sets a target production quantity of the workpiece as a first set value and presets an arbitrary number smaller than the target production quantity as a second set value; a comparison means for comparing the production quantity of the workpiece corresponding to the cumulative number of the workpieces with the first setting value and the second setting value; and notification means for notifying an operator that production of each set number of workpieces has been completed when the production quantity of the workpieces exceeds a first set value or when the production quantity of the workpieces exceeds a first set value. A production volume control device characterized by: