JP3118474B2 - Production data management method and production data management device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production data management method and a management device for managing the number of productions when a production device or the like in a factory is computer-managed.

[0002]

2. Description of the Related Art Conventionally, when production data is managed in a factory, the number of productions per day is generally recorded as data. As a method to capture the daily production quantity, a daily counter is installed for each machine, first, the worker resets the counter before starting work in the morning, records the number of production on that day after the work on the day, and the next day Before starting work again, workers reset the counter and started production. In some cases, the reset operation is automatically performed at a fixed time by a machine.

[0003] When production is managed by computer,
In some machines, the number of productions for each machine is automatically tabulated by a computer, and after the computer tabulates the data at a fixed time, the counter of the machine is reset by a command from the computer. In this operation, as shown in the flowchart of FIG. 5, the computer determines whether or not it is a fixed time in the morning, and if not, reads the counter value and displays it on the display of the computer. If it is a fixed time in the morning, the counter value is fetched and the value is recorded on the magnetic disk as the production result of the previous day. Then, an instruction to reset the counter of the machine is issued. In response to this reset instruction, the reset circuit in the control device operates on the machine side to reset the counter. The computer then retrieves the counter value again to see if the counter has been reset. If the counter value is 0, the process proceeds to the above-described counter number display flow. If the reset has not been completed, the value is displayed on the computer display. Issue a reset instruction.

[0004]

In the former case of the prior art, it is extremely troublesome and inefficient for an operator to reset the counter of the machine one by one. Furthermore, there is a problem that it takes time to start the work after resetting all the machines. Also,
In the case of automatic reset at a fixed time, if the recording is forgotten, the data of the previous day will be lost, and the reset may not work properly, and there is a problem that a confirmation work is required. .

Further, if the computer is managed as in the latter case of the prior art described above, the above-mentioned problems can be solved to some extent. However, since the data is automatically taken in and reset by the computer, the computer has a counter. Had to be sure that was reset. And for this reset,
There is a problem that a reset circuit is required and a control program and a control device are complicated. In addition, because of this confirmation work, it takes some time for the reset operation.If this reset operation is performed while the production system is operating, the counter operation will take Had a problem that it was not possible to count this.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the related art, and a production data management method and management capable of quickly and reliably collecting production data with a device and a program having a simple configuration. It is intended to provide a device.

[0007]

According to the present invention, there is provided a counter for counting the number of production lines in a production process line, the value of this counter is taken and stored at a predetermined reference time, and the above-mentioned value is stored at the next reference time after a predetermined time. This is a production data management method in which a counter value is fetched and stored, and a value obtained by subtracting the counter value at the previous reference from the counter value at the current reference is recorded as production data.

Further, the present invention comprises a counter for counting the number of production lines in the production process line, a count data storage means for taking in and storing the value of this counter at every predetermined reference time, and This is a production data management device provided with an operation means for subtracting the counter value at the time of the previous reference stored in the count data storage means, and a production data storage means for recording a numerical value calculated by the operation means as production data.

[0009]

According to the production data management device of the present invention, the number of productions is continuously counted by a counter, and a difference at every reference time is taken as production data, so that resetting of the counter is unnecessary, and no counting omission occurs. Things.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. This embodiment relates to a production management system on a production line in a factory, and as shown in FIG.
Are connected to each other, and machine tools 14, 15, and 16 are provided along the production line, and the machine tools 14 to 16 are connected to and controlled by controllers 18, 19, and 20, respectively. An appropriate number of machine tools 14 to 16 and control devices 18 to 20 are provided depending on the production line. Here, the machine tool 14 and the control device 18 are at the head of the production line, and the machine tool 16 and the control device 20 are in production. End of line. In addition, machine tools and control devices other than the machine tool 15 and the control device 19 are omitted in the drawings. And
The computer device 10, the overall control device 12, and each of the control devices 18 to 20 form a network by a data link method. In addition, the control devices 18 and 20 include:
Production number counters 21 and 22 for counting the number of productions processed by the machine tools 14 and 16 are provided.

In the production management system of this embodiment, the control devices 18 to 20 also manage the production information of the machine tools 14 to 16. The production information managed here includes, for example, a) abnormality information on whether or not a predetermined abnormality has occurred in each machine tool, and b) the use frequency of a tool used in each machine tool and its replacement time. Tool information, c) Work information that manages the number of workpieces being processed simultaneously in each machine tool, and d) Machine cycle that manages the time required for each machine tool to process one workpiece Information, four types of information are managed. Conventionally, the computer device 10 collects and manages the information by designating the address of the information for each information from the memories of the control devices 18 to 20 and sequentially taking out the information.
In this embodiment, each piece of information is temporarily stored in a storage device in the central control device 12 and then sent to the computer device 10 because the load on the central processing unit 12 is large and the processing speed is slow.

That is, as shown in FIG. 3, the above information in the memory of each of the control devices 18 to 20 is temporarily stored in a storage device in the general control device 12 as information for each of the machine tools 14 to 16 at once. The data is classified and stored in the general control device 12 for each information type of the above-mentioned a) abnormality information, b) tool information, c) work information, and d) machine cycle information. The computer device 10 collectively reads, records, and manages information classified for each information type in the general control device 12 for all the machine tools for each information type. As a result, the burden on the computer device 10 is reduced, and the reading of the above information can be performed easily and quickly.

In the production management system of this embodiment,
As shown in FIG. 1 and FIG. 4, the production number management method counts and records the daily production quantity. First, it is determined whether or not it is a predetermined reference time in the morning. Fetches the values of the production number counters 21 and 22, and subtracts the reference time counter value of this morning from the current counter value. And the difference is the production number up to today,
The information is displayed on the display of the computer device 10. This continues until the end of production. If the time is a predetermined reference time, the values of the production number counters 21 and 22 at that time are fetched and the computer device 10 or the general control device 1 is read.
2 is stored in the count data storage device 24. Then, the values of the production number counters 21 and 22 at the predetermined reference time in the morning of the previous day, stored in the storage device 24, are subtracted from the reference time counter values of the today taken in advance, and the difference is taken as the production number result of the previous day. The information is recorded in the storage device 26 in the computer device 10. Thereafter, the process returns to the display flow of today's production number.

According to the production management system of this embodiment,
It is only necessary for the production quantity counters 21 and 22 to continuously count the production quantity, and there is no need to reset the counter. Therefore, the production quantity count does not leak during the reset operation, and no device such as a reset circuit is required. And the production management program is simplified. Further, the recording management of various types of information is also networked by a data link, is temporarily recorded by the general control device 12, and can be read by the computer device 10 for each information type, so that the load on the computer device 10 is further reduced. It becomes.

It should be noted that the production data management method and the management apparatus of the present invention are not limited to the above embodiment, and various data storage means may be a magnetic recording device, an optical disk, a semiconductor memory or the like, and the data storage means may be a computer. It may be in the device, in the control device, or in a separate recording device. The reference time for taking in the value of the counter may be set to a predetermined time every day, or may be every predetermined time other than 24 hours.

[0016]

According to the production data management method of the present invention, the value of a counter for counting the number of productions in a production process line is fetched and stored at a predetermined reference, and at the next reference after a predetermined time, the value of the counter is further increased. Capture and memorize,
Since the value obtained by subtracting the counter value at the previous reference from the counter value at the current reference is recorded as production data, there is no need to reset the counter, there is no omission in counting, and control is easy.

Furthermore, the production data management device of the present invention
A count data storage means for taking in and storing a value of a counter for counting the number of productions of the production process line at every predetermined reference time, and a counter for a previous reference time stored in the count data storage means from the current reference time counter value A calculation means for subtracting a value is provided, and the numerical value calculated by this calculation means is stored in the production data storage means. Therefore, there is no need to provide a reset circuit on the counter side, and the computer does not need to confirm resetting. Good and simple device, easy to control.

[Brief description of the drawings]

FIG. 1 is a claim correspondence diagram of a production data management device of the present invention.

FIG. 2 is a block diagram of one embodiment of a production data management device of the present invention.

FIG. 3 is a conceptual diagram showing a data transfer method of the production data management device of the embodiment.

FIG. 4 is a flowchart showing one embodiment of a production data management method of the present invention.

FIG. 5 is a flowchart showing a conventional production data management method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Computer apparatus 12 Overall control apparatus 14, 15, 16 Machine tool 18, 19, 20 Control apparatus 21, 22 Production number counter

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G06M 1/00-3/14 B23Q 37/00-41/08

Claims (2)

(57) [Claims] In a production data management method in which a control device for controlling a machine tool in a production process line is provided with a counter for counting the number of productions and the number of productions is managed at predetermined time intervals, the value of the counter is determined by a predetermined standard. The value of the above counter is captured and stored at the next reference after a certain period of time, the counter value of the previous reference is subtracted from the counter value of the current reference, and the subtracted value is recorded as production data. A production data management method, characterized in that: 2. A production data management device comprising a control device for controlling a machine tool in a production process line and a counter for counting the number of productions, and recording the number of productions at predetermined time intervals. Count data storage means for capturing and storing hourly; calculating means for subtracting the counter value at the previous reference time stored in the count data storage means from the counter value at the current reference time; A production data management device, comprising: production data storage means for recording numerical values as production data.