JP4344918B2 - Processing information storage device and processing information tracking system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a machining information storage device and a machining information tracking system.
[0002]
[Related background]
Machining and assembly lines for processing and assembling various workpieces using multiple processing machines are broadly divided into centralized control systems and distributed control systems. A plurality of processing machines are operated under the control of a plurality of controllers to be managed, and each processing machine performs processing / assembly processing according to processing / assembly information for each workpiece.
[0003]
In such a distributed control processing assembly line, a method is known in which each processing machine reads processing assembly information from a data storage device provided on a pallet that can move integrally with a workpiece. For example, when a workpiece is separated from a pallet when a workpiece for which assembly processing has been completed is transferred to the next processing / assembly line, the processing / assembly information up to that point is used as data for the pallet used in the next processing / assembly line. It must be transferred to the storage device, which is troublesome.
[0004]
Therefore, the machining information storage device described in Patent Document 1 is detachably attached to the work and stores the work assembly information in a readable and writable manner, and the memory is attached to the work until all machining and assembly processes are completed. As a result, the production efficiency in the processing and assembly line is improved.
[0005]
[Patent Document 1]
Japanese Patent No. 2616291
[0006]
[Problems to be solved by the invention]
However, according to the processing information storage device described in Patent Document 1, since the memory is removed from the workpiece when the processing and assembly of the workpiece is completed, the processing and assembly at the time of product manufacture is performed after shipping the processed and assembled workpiece to the market. It was difficult to obtain information, which sometimes hindered the follow-up survey of shipped products. On the other hand, if the product is shipped with the memory storing the machining assembly information attached for the convenience of the follow-up survey, not only will the product cost increase but the machining assembly information will flow out to the outside. May occur.
[0007]
Therefore, the present invention makes it possible to acquire processing / assembly information of shipped products only from the manufacturing side, prevents outflow of processing / assembly information, and can easily and inexpensively acquire information, and is convenient for product tracking surveys. It is an object to provide a storage device and a processing information tracking system.
[0008]
[Means for Solving the Problems]
The machining information storage device according to claim 1 is provided on a workpiece. Detachable Attached , Process and assemble at the processing and assembly equipment Machining and assembly information of the workpiece But Memorize readable and writable And when the predetermined assembly process is completed at the processing assembly facility work From The first memory to be removed and the processing assembly equipment side , A second memory for storing the machining and assembly information stored in the first memory in association with an identification number unique to the workpiece; When the predetermined processing and assembly process is completed, the first memory is replaced. Attached to the workpiece , And a third memory that holds the identification number in a readable manner.
[0009]
According to the first aspect of the present invention, the machining assembly information is read out from the first memory of the machining information storage device to the machining assembly facility side at an appropriate time before starting, during, or after the workpiece assembly. Processing assembly information can be written in the first memory from the processing assembly facility side. Accordingly, when the workpiece assembly is performed through a series of processes, the processing facility reads the process assembly information necessary for performing each process from the first memory, and performs the process assembly on the workpiece according to the process assembly information. be able to.
[0010]
In the present invention, when the workpiece assembly is completed, the machining assembly information stored in the first memory is transferred to the second memory on the machining facility side and associated with the identification number unique to the workpiece. The workpieces stored in the memory and then processed and assembled are shipped as products.
Now, there is a request to follow-up on shipped products in order to improve, repair, and replace products, or to investigate the cause of defects in shipped products. However, as described above, it is generally difficult to obtain the processing / assembly information of the product after the product is shipped, which is an obstacle to the follow-up survey. In particular, in a processing and assembly line that performs multi-product production on a large scale, not only a variety of processing and assembly facilities are used, but also multiple units of the same type may be used for the same processing and assembly processing. These products will be produced by different processing and assembly facilities even if they are the same type. Therefore, it is extremely difficult to trace the processing / assembly history of products manufactured on such a processing / assembly line after product shipment.
[0011]
In this regard, according to the machining information storage device according to claim 1, after the product is shipped, a relatively simple and inexpensive means of attaching a third memory holding an identification number unique to each workpiece to the workpiece. Follow-up is possible. That is, the third memory may be any memory that can hold an identification number composed of numbers, symbols, etc. so that it can be read visually or by optical, electrical, or mechanical reading means. Can be composed of various barcodes. The third memory remains attached even when the processed and assembled work is shipped as a product, and is used when the product is tracked later.
[0012]
In the follow-up survey, an identification number unique to the product is read from the third memory attached to the product, and the second memory on the processing equipment side (for example, the memory of the host computer of the machining assembly line) is read according to this identification number. The processing / assembly information of the product can be easily obtained from the apparatus. As described above, according to the present invention, it is possible to easily and inexpensively obtain processing / assembling information at the time of manufacturing the product and to carry out a follow-up survey of the product even after the product is shipped. The contact information can be stored in the third memory together with the identification number.
[0013]
Also, since the first memory storing the machining assembly information is removed from the product (processed and assembled workpiece) before the product is shipped and the machining assembly information is stored in the second memory on the machining equipment side, access to the machining assembly information is possible. This can be done only from the manufacturing side, and there is no risk of processing / assembling information leaking outside. Moreover, since the first memory is removed, the use of the first memory does not increase the manufacturing cost. And since there are few restrictions from the cost side with respect to a 1st memory, an IC memory etc. which require a large installation space compared with a barcode etc. and are expensive as a 1st memory can be used.
[0014]
Since the IC memory has a large storage capacity, it is convenient when the amount of processing / assembly information is large, and is useful for performing processing / assembling of workpieces and tracking after product shipment. In addition, regarding the reading and writing of machining assembly information, barcodes can not only write information, but there is a risk that it may hinder reading information due to the influence of machining and assembly environment such as chips, coolant, mist, etc. The IC memory can read and write information and is less likely to be affected by the processing and assembly environment during reading and writing, and is suitable for use in various environments.
[0015]
The machining information storage device according to claim 2, wherein the first memory is removed from the workpiece. Is After erasing the stored machining / assembly information, machining / assembly information for a new workpiece After storing ,next ,new Attaching to a workpiece Be .
According to the machining information storage device of the second aspect, since the first memory can be used repeatedly, the number of the first memories required when mounting the first memory on each of a large number of workpieces is reduced. The manufacturing cost can be reduced accordingly, which is suitable for mass production.
[0016]
In the machining information storage device according to claim 3, the second memory on the machining equipment side can always receive the machining assembly information stored in the first memory via the network.
According to the machining information storage device according to claim 3, during machining and assembling of the workpiece, the machining and assembly information in the first memory is transferred to the second memory on the machining equipment side via the network, and the machining in the second memory is performed. Since assembly information can be updated sequentially, it is possible to quickly investigate the cause of a problem that occurs during machining and assembly of the workpiece. it can. Further, since the machining / assembly information in the second memory is sequentially updated, the machining / assembly information in the first memory is transferred to the second memory at a time after the machining / assembly of the workpiece is completed, and the machining / assembly information in the second memory is updated at a time. Compared to the case of updating, the machining / assembling information can be updated more efficiently.
[0017]
The processing information tracking system according to claim 4, Machining and assembly with multiple machines First storage means for storing workpiece assembly information in a readable and writable manner and first transmission / reception means for transmitting and receiving machining assembly information Have To work Detachable Attached And when the processing and assembly process is completed on the processing machine work From Processing information storage means to be removed; Arranged in the vicinity of a plurality of processing machines operated under the control of the control device, A plurality of second transmission / reception means for transmitting / receiving machining assembly information to / from the first transmission / reception means; Provided in the control device, Processing assembly information transferred from the first storage means via the first transmission / reception means and the second transmission / reception means. Corresponding to the identification number unique to the workpiece Second storage means for readable storage; An identification number holding unit that is attached to the workpiece in place of the processing information storage unit when a predetermined processing assembly process is completed, and holds an identification number unique to the workpiece in a readable manner; Depending on the input of the identification means Of the workpiece specified by the identification number And an information output means for reading and outputting the machining assembly information from the second storage means.
[0018]
According to the machining information tracking system according to claim 4, during machining and assembling of individual workpieces, machining and assembling is performed between the machining information storage means attached to each workpiece and the control device via the first and second transmission / reception means. Since information is exchanged, it is possible to reliably exchange information without being affected by the processing and assembly environment. Therefore, it is possible to accurately carry out the work assembly of the workpiece according to the work assembly information, and it is possible to quickly investigate the cause when a problem occurs during the work assembly of the workpiece.
[0019]
When the machining and assembling of each workpiece is completed, the identification number holding means is attached to the workpiece, and the machining and assembly information stored in the first storage means of the machining information storage means is transferred and stored in the second storage means. Next, since the machining information storage means is removed from the workpiece, the machining assembly information is prevented from flowing out. Further, the machining information storage means can be attached to a new workpiece to reduce the cost. Then, when a work tracking survey is required after the processed and assembled work has been shipped as a product, the product (work) identification number notified to the manufacturing side is input to the information output means. Since the processing / assembly information of the product can be acquired, it is possible to easily follow up the product based on the processing / assembly information.
[0020]
Preferably, the processing information tracking system includes high frequency output means for outputting a high frequency output to the second transmission / reception means, and the processing information storage means receives power from the high frequency output received via the second transmission / reception means and the first transmission / reception means. A power supply circuit is provided. According to this preferred embodiment, power supply to the machining information storage means can be performed in a non-contact manner, and workpiece conveyance and machining assembly are not hindered, and machining assembly efficiency is improved.
[0021]
Preferably, an IC chip is used as the first storage means. According to this preferred embodiment, the IC chip has a storage capacity larger than that of a bar code or the like, and can read and write information, so that it is possible to store processing assembly information necessary for product tracking investigation.
Preferably, a two-dimensional barcode is used as the identification number holding means. According to this preferred embodiment, since the two-dimensional barcode is relatively inexpensive, the cost can be reduced.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a machining and assembling system including a machining information storage device according to an embodiment of the present invention will be described with reference to the drawings.
The machining assembly system of the present embodiment is configured to perform machining / assembly processing on a cylinder block as a workpiece using various types of processing machines, for example. Here, the individual workpieces differ from each other in shape and size in accordance with the displacement of the engine. Therefore, in this system, various workpieces are processed and assembled. In addition, a plurality of processing machines of the same type are installed depending on the processing and assembly processing, and the same processing and assembly processing is performed by different processing machines for the same type of workpieces.
[0023]
As shown in FIG. 1, this system includes a plurality of controllers (partially indicated by reference numerals 11 to 13) that operate under the control of the host computer 10, and each controller includes one or more processing machines (its A part of which is indicated by reference numerals 111, 112,..., 132) and controls the processing machine together with the host computer 10. Each controller is connected to the host computer 10 via a network 40 such as Ethernet (registered trademark), and information can be exchanged between the host computer and each controller. The host computer 10 may be composed of a plurality of servers.
[0024]
As schematically shown in FIG. 1, the processing machines 111 to 132 are installed along the processing assembly lines 61 to 63, and a series of workpieces 30 conveyed by a conveying means (belt conveyor, conveying robot, etc.) 50. The processing and assembly processing is performed. Each processing is performed by automatic operation of the processing machine or manual operation of the processing machine by an operator. Reference numeral 61 denotes a cylinder block machining assembly line, 62 denotes a cylinder head machining assembly line, and 63 denotes a machining assembly line for attaching the cylinder head to the cylinder block.
[0025]
This system performs processing and assembly of each workpiece 30 while exchanging information between the processing equipment side (host computer, controller and processing machine) and processing assembly information storage means described later attached to each workpiece 30. The processing history of each workpiece 30 is stored on the processing equipment side in association with an identification number unique to each workpiece when the processing and assembly are completed. According to this machining / assembly system, workpieces can be assembled / assembled according to the machining / assembly information, the cause of troubles during machining / assembly can be quickly determined, and the workpieces / assembled workpieces (for example, engine or The engine assembly history such as a cylinder block with a cylinder head) can be tracked and investigated even after the product is shipped as a product to another manufacturing factory or market. In other words, this system has a function of a machining information tracking system.
[0026]
For this reason, prior to the machining and assembling work, the machining and assembling information storage means having the information storage medium and the transmission / reception means is detachably attached to each workpiece. In this embodiment, an ID tag 31 as a processing information storage means is removably screwed into an attachment hole (not shown) formed in the workpiece 30. The mounting hole is used later for mounting another workpiece (for example, an exhaust pipe), and does not require a mounting hole dedicated to the ID tag, which contributes to cost reduction. In other words, the workpiece to which the ID tag 31 is attached is preferably a workpiece that does not rotate during machining and assembly, such as a cylinder block, and the ID tag 31 is attached to a workpiece that is rotated during machining and assembly, such as a crankshaft. It is inappropriate to use.
[0027]
Although not shown, the ID tag 31 includes a holder and a screw portion that is integral with the holder and screwed into the mounting hole as described in Patent Document 1, and the following elements 32 to 35 are provided in the holder. It can be housed.
As shown in FIG. 2, the ID tag 31 is an information storage medium, such as an IC memory (first memory, first storage means) 32, which stores processing assembly information in a readable and writable manner, and information reading / writing to the IC memory 32. A control circuit 33 for controlling the transmission / reception, a transmission / reception circuit (first transmission / reception means) 34, and a power supply circuit 35.
[0028]
On the other hand, on the processing equipment side, an antenna (second transmission / reception means) 71 is provided near each processing machine, and this antenna 71 is attached to, for example, an air cylinder type actuator 72 between the transmission / reception position and the retracted position. It can be advanced and retracted, and is connected to the controller via a converter (signal converter) 73.
When the work 30 is placed at a predetermined position near the processing machine, the transmission / reception circuit 34 of the ID tag 31 faces the antenna 71 at the transmission / reception position at a predetermined interval and outputs the high frequency output output from the converter 73 to the antenna. The power supply circuit 35 generates the operating power of the ID tag 31 from the high frequency output.
[0029]
Further, when exchanging information between the processing equipment and the ID tag 31, a high-frequency signal is transmitted and received between the converter 73 and the transmission / reception circuit 34 of the ID tag 31. That is, a high frequency signal transmitted from the converter 73 via the antenna 71 is received by the transmission / reception circuit 34 of the ID tag 31, information is extracted from the high frequency signal, and this information is written into the IC memory 32 under the control of the control circuit 33. It is supposed to be. On the other hand, the high-frequency signal transmitted from the transmission / reception circuit 34 of the ID tag 31 is received by the converter 73 via the antenna 71, and information is extracted from the high-frequency signal by the converter 73. This information is stored in an information storage device (illustrated) provided in the controller. And is transferred from the controller to the host computer 10 and stored in the information storage device (second memory, second storage means) 10a of the host computer.
[0030]
Prior to the processing and assembly of the workpiece (here, the cylinder block) by the processing and assembly system having the above configuration, the processing and assembly information is stored in the IC memory 32 of the ID tag 31, and then the ID tag 31 is screwed into the mounting hole of the workpiece 30. Worn. The ID tag 31 can be attached using, for example, an automatic tag placement machine described in Patent Document 1. Here, the machining assembly information includes identification number information representing a workpiece-specific identification number, type information representing a workpiece type, machining assembly work information in each of a series of workpiece machining and assembly processes (cutting information on each machining surface, hole machining) Position, hole dimensions, work instruction information).
[0031]
When the work 30 equipped with the ID tag 31 is transported to the processing position of the first processing machine 111 by the transport means 50, the antenna 71 installed in the vicinity thereof moves forward to the transmission / reception position, and transmission / reception of the ID tag 31 is performed. It faces the circuit 34. Next, the controller 11 operating under the control of the host computer 10 controls the converter 73 to output a high frequency output from the converter 73, the high frequency output is received by the transmission / reception circuit 34 via the antenna 71, and the power supply circuit 35 is The operating power of the ID tag 31 is generated from the output, and the ID tag becomes in an operating state.
[0032]
Next, under the control of the control circuit 33 of the ID tag 31 in accordance with an instruction from the host computer 10, the machining assembly information related to the first processing machine 111 is read from the IC memory 32. A high-frequency signal on which the machining / assembly information is superimposed is output. The high-frequency signal is received by the converter 73 via the antenna 71, and the converter 73 extracts the machining / assembly information from the high-frequency signal and sends it to the controller 11. There is little possibility that the machining and assembly environment will affect the sending of machining and assembly information from the IC memory 32 to the controller 11.
[0033]
The controller 11 controls the operation of the processing machine 111 according to the processing information, and thereby the first processing / assembly with respect to the workpiece 30 is performed. When the operator operates the processing machine, the controller 11 displays the processing / assembly work information on a display device (not shown) provided near the processing machine 111, and the operator selects the processing machine 111 according to the work information. drive.
[0034]
Then, when the first machining is completed, the controller 11 sends the record information (processing machine, machining assembly start / end time, machining accuracy, etc.) relating to the first machining assembly to the host computer 10 and the converter 73, respectively. Send. From the converter 73, a high-frequency signal on which performance information is superimposed is transmitted to the transmission / reception circuit 34 of the ID tag 31 via the antenna 71. The transmission / reception circuit 34 extracts the performance information from the high-frequency signal. Is stored in the IC memory 32 as additional machining / assembly information. Here, the processing / assembly environment is less likely to affect the transmission of processing / assembly information from the converter 73 to the IC memory 32.
[0035]
In the same manner, a series of processing / assembling processes are sequentially performed in accordance with the processing / assembling information, and each time each processing / assembling process is completed, results information in each process is stored in the storage device 10a of the host computer 10 and the IC of the ID tag 31. Stored in the memory 32. It should be noted that the writing of performance information to the IC memory 32 is not essential.
If necessary, the host computer 10 refers to the machining / assembly history data (actual information) of each workpiece 30 stored in the storage device 10a to determine whether or not a malfunction has occurred during machining / assembly, and the malfunction has occurred. Occasionally, an alarm device is activated to notify the safety personnel at the manufacturing plant of the occurrence of a failure, prohibiting further processing / assembly processing on the workpiece that has caused the failure, or temporarily manufacturing on the processing / assembly line. Stop. The security personnel investigates the processing history data in the host computer 10 to investigate the cause of the occurrence of the malfunction and take necessary measures.
[0036]
In this system, an inspection machine controlled by the controller 14 (a part thereof is denoted by reference numeral 141) downstream of the machining assembly line 63 or downstream of an engine assembly line (not shown) following the machining assembly line 63. Is provided, and a workpiece that has been subjected to a series of machining and assembly processes is inspected by an inspection machine, and the inspection result is stored in the storage device 10a and the IC memory 32 as additional machining and assembly information. The inspection may be a total inspection or a sampling inspection. In the case of a sampling inspection, the number of samplings per lot can be set for each type of workpiece. Writing inspection information to the IC memory 32 is not essential.
[0037]
As described above, when the processing assembly and inspection of the workpiece 30 is completed and the manufacture of the engine or the engine parts (cylinder head / cylinder block assembly) is completed, an identification number (for example, serial number) unique to the workpiece 30 is completed. A barcode (for example, a matrix type two-dimensional barcode) 60 encoding the manufacturer's contact information and the manufacturer's contact information is detachably attached to the workpiece 30, and then the ID tag 31 is removed from the workpiece 30. Since the ID tag 31 is removed, the processing assembly information does not flow out. Although the bar code 60 is exaggerated in FIG. 1, the bar code 60 is actually as small as 8 mm square, for example. Further, in addition to the bar code, a serial number may be directly stamped on the work 30, or a metal plate or a seal stamped with a serial number may be attached to the work 30.
[0038]
Now, the processed and assembled work 30 (engine or engine part) is shipped as a product to the market or another manufacturing factory, and for some reason, a follow-up survey may be performed on the shipped product. In that case, the serial number specific to the product (work) is read from the barcode 60 attached to the product together with the contact information of the manufacturer using a reader (not shown), or the serial number stamped on a metal plate or the like. Is read visually and the manufacturer is inquired. When such an inquiry is made, the serial number is input to the host computer 10 as information output means in the manufacturing factory, and the host computer 10 reads out the processing assembly information corresponding to the serial number from the storage device 10a and outputs it. The follow-up researcher conducts a follow-up survey of the product by examining the processing / assembly information on the product or examining the processing / assembly information of other products.
[0039]
That is, the serial number in the present system enables acquisition of processing / assembly information for tracking investigation only on the manufacturing side rather than performing the normal function of the serial number indicating that it is a legitimate user. Fulfills the functions inherent to
As described above, according to the present system, it is possible to perform processing / assembly processing on the workpiece 30 in accordance with the processing / assembly information stored in the ID tag 31 attached to each workpiece 30 and to quickly respond to a failure during processing / assembly. In addition, it is possible to easily perform a follow-up survey after a workpiece that has been processed and assembled is shipped as a product.
[0040]
Although the description of the machining information storage device and the machining information tracking system according to one embodiment of the present invention has been completed above, the present invention is not limited to the above-described embodiment and can be variously modified.
For example, in the above embodiment, the case where engine parts such as a cylinder block and a cylinder head are processed and assembled has been described. However, the present invention is applicable to processing and assembly of workpieces other than engine parts. The processing assembly referred to in the present invention refers to both processing or assembly or processing and assembly, and the processing machine refers to a processing machine or assembly machine or processing assembly machine. That is, the present invention can be applied not only to a machining / assembly system but also to a machining system / assembly system.
[0041]
In the present invention, it is not indispensable to additionally inspect and store inspection information as processing assembly information by inspecting a workpiece that has been processed and assembled as in the case of the embodiment. Good.
[0042]
【The invention's effect】
The machining information storage device according to claim 1 is provided on the machining assembly equipment side, a first memory which is attached to the workpiece and stores the machining assembly information of the workpiece so as to be readable and writable and removed before shipment of the workpiece. A second memory for storing the machining / assembly information stored in the first memory in association with an identification number unique to the workpiece, and a third memory attached to the workpiece for holding the identification number in a readable manner. According to the machining / assembly information read from the first memory, machining / assembling of the workpiece can be carried out, the cause of the failure during machining / assembling can be determined quickly and accurately, and an identification number unique to each workpiece can be obtained. Enables follow-up surveys after product shipment by a relatively simple and inexpensive means of attaching the third memory holding the . In addition, since the first memory is removed from the product (work that has been processed and assembled) before shipping the product, it is possible to prevent outflow of the processed and assembled information.
[0043]
In the machining information storage device according to claim 2, after erasing the machining assembly information stored in the first memory removed from the workpiece, the machining assembly information of the new workpiece is stored in the first memory and the first memory is stored. Since the memory is attached to a new workpiece, the first memory can be used repeatedly, and the number of first memories required when mounting the first memory on each of a number of workpieces can be reduced, resulting in a manufacturing cost. Can be reduced.
[0044]
In the machining information storage device according to claim 3, since the second memory on the machining equipment side can always receive the machining assembly information stored in the first memory via the network, a problem occurs during machining assembly. The cause can be investigated quickly, and the machining / assembly information in the second memory can be updated efficiently.
The processing information tracking system according to claim 4 includes first storage means for reading and storing the processing assembly information of the workpiece and first transmission / reception means for transmitting and receiving the processing assembly information, and is attached to the workpiece before the workpiece is shipped. The machining information storage means to be removed, the identification number holding means for holding the identification number unique to the workpiece in a readable manner, and a plurality of first assembly units that are connected to the control device and transmit / receive machining assembly information to / from the first transmission / reception means. 2 transmission / reception means, second storage means for readable storage of machining assembly information transferred from the first storage means via the first transmission / reception means and each second transmission / reception means, and the workpiece according to the input of the identification number Information output means for reading out the machining assembly information from the second storage means and outputting it, so that the machining assembly information can be transferred without being affected by the machining assembly environment. It is possible to accurately carry out the work assembly of the workpiece according to the machining assembly information, to quickly investigate the cause of the failure during the machining assembly, and the processed and assembled workpiece is shipped as a product. When a follow-up survey becomes necessary after that, the identification number is input to the information output means, so that the processing / assembly information of the product can be acquired and the follow-up survey can be easily performed.
[Brief description of the drawings]
FIG. 1 is a schematic view of a machining assembly system according to an embodiment of the present invention.
2 is a schematic block diagram showing an internal configuration of the ID tag shown in FIG. 1. FIG.
[Explanation of symbols]
10 Host computer
10a storage device
11, 12, 13, 14 Controller
30 works
31 ID tag
32 IC memory
33 Control circuit
34 Transceiver circuit
35 Power supply circuit
40 network
50 Conveying means
60 Barcode
71 Antenna
73 Converter
111, 112, 121, 122, 131, 132
141 Inspection machine

Claims (4)

A processing information storage device used in a processing / assembly line that controls processing / assembly equipment using a distributed control method,
Removably attached to the workpiece, processing and assembly information of the workpiece for machining assembled machining assembly equipment while being read and writable stores, the when the processing and assembly facilities of predetermined machining assembly process is completed A first memory removed from the workpiece;
Provided processing and assembly equipment side, a second memory for storing in association with a unique identification number processing and assembly information stored in said first memory to said workpiece,
A machining information storage device comprising: a third memory attached to the workpiece in place of the first memory when the predetermined machining assembly process is completed and holding the identification number in a readable manner. Said first memory detached from the workpiece, after clearing the processing and assembly information stored, after storing the processing and assembly information of a new work, then that is attached to the new shelf workpiece The machining information storage device according to claim 1, wherein Wherein said second memory of the processing equipment side, claim 1 or claim characterized in that the processing and assembly information stored in said first memory which is mounted on the workpiece can be received at all times via a network Item 3. A machining information storage device according to Item 2. A processing information tracking system used in a processing assembly line for controlling a processing machine with a distributed control method,
A first storage means for reading and writing processing assembly information of a workpiece to be processed and assembled by a plurality of processing machines and a first transmission / reception means for transmitting and receiving the processing assembly information are detachably attached to the workpiece. Machining information storage means to be removed from the workpiece when a predetermined machining assembly process is completed on the machining machine ;
Braking respectively disposed in the vicinity of the plurality of processing machines which are operated under the control of the control device, and a plurality of second transmitting and receiving means for transmitting and receiving the processing and assembly information between said control device said first transmitting and receiving means,
Machining / assembly information provided in the control device and transferred from the first storage means via the first transmission / reception means and the second transmission / reception means is stored in a readable manner in association with an identification number unique to the workpiece. Second storage means for
An identification number holding means that is attached to the workpiece instead of the machining information storage means when the predetermined machining assembly step is completed, and holds an identification number unique to the workpiece in a readable manner;
A machining information tracking system comprising: an information output unit that reads out and outputs machining assembly information of a workpiece specified by the identification number in response to an input from the identification unit.

Images