JPH0542456A - Working information memory device - Google Patents

Abstract

PURPOSE:To provide a working information memory device capable of reading and writing the working and assembling information of a work by use of a signal transmitting and receiving means on a line base side and being integrally mounted to the work in such a manner as to be separable. CONSTITUTION:An ID tub 13 as a work information memory device has a holder 20, a screw groove forming part 21 extended from the holder and spirally fixed to the assembling screw groove forming part 50 of a work 10 before working and assembling in such a manner as to be separable, a memory 24 supported by the receiving part 22 of the holder 20 and storing the working and assembling information of the work 10, and a transmission and receipt control means supported by the receiving part 22 and connected to working and assembling control means 15, 16, 17 through a signal transmitting and receiving means 14 when it is provided opposite to the transmitting and receiving means 14 in no contact.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing and assembling line, which is a facility such as a manufacturing factory, in which processing information and product accuracy information of a workpiece to be processed and assembled are readable and writable and can be moved. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, a plurality of processing and assembling processing machines are installed along each line in order to sequentially perform a predetermined processing and assembling on each work in a manufacturing factory. A processing machine that performs each of these processing and assembling processes processes or assembles a predetermined portion of each work piece that has sequentially reached the processing position. In this case, as shown in FIG. 12, each workpiece 2 is moved by one stroke S in each machining cycle by the transporting means 1 of the machining line R0, and sequentially reaches the machining position in front of each machining machine 3 to perform a predetermined machining process. The next machining cycle is received. Each processing machine 3 on such a processing line R0 performs its processing operation according to a command from the main processing control device 4. That is, when the processing control device 4 centrally controls and each processing machine 3 on the processing line R detects that the workpiece reaches the processing position,
In response to this, the processing control device 4 issues a processing control command in accordance with a predetermined processing mode, and each processing machine performs a processing operation according to the command.

However, when such a centralized control system is adopted, at the entrance side of the machining line R0, the machine type detection device first determines the machine type of the work, and transmits a machining command corresponding to the machine type to each machining machine. Will be done. For this reason, in a small-quantity multi-model production line, it takes time to determine the model, and there are many parts in which the machining commands are different from each other, the control of the machining control device 4 becomes complicated, and the control speed becomes low. In addition to it,
Assuming that one machining cycle is, for example, 40 seconds, it takes about 35 seconds as a conveyance time, and in the remaining 5 seconds, assembling work instruction data and machining / assembling instruction data for the operator of each work are provided to the main machining control device 4 and each machining machine 3. It will be exchanged with. In this case, when the main host computer is used as the processing control device, it may not be possible to exchange the assembly work instruction data and the processing data for each work within these 5 seconds.

Therefore, instead of such a centralized control, as shown in FIG. 13, each controller 6 independently operates each processing machine 3 of the work processing line according to the processing and assembly information corresponding to each work. A distributed control system has been proposed in which the main host computer 7 exchanges control signals with these controllers 6 to receive quality information. In the machining / assembly line R01 that employs this distributed control method, as shown in FIG. 13, data that allows the operator to hold work instruction information and machining information for the work 2 on the pallet 8 supporting the work 2 and move the data. A storage device 9 is attached. The data storage device 9 is integral with the pallet 8. Each time the work reaches the processing position, a signal is transmitted and received in a non-contact state with the controller 6 side, and the work instruction information and the processing information to be performed by the operator for each work are read and written, and the processing is performed. The controller 6 operates each of the processing machines 3 in accordance with the data, detects the quality information, and outputs the quality information for addition. The form of the work supplied to the processing and assembly line may be a single product, a collective component in which processed single products are assembled, or an unfinished product at the time of assembly. When these single items, collective parts and unassembled products are supplied to the processing and assembly line, they are directly placed on the transport means or placed on a dedicated pallet to undergo the processing and assembling process. There is.

[0005]

By the way, the data storage device 9 which can hold and move the data used in the conventional distributed control moves together with the pallet 8. Therefore, when the processing on one processing line is completed and the processing on the next processing line is started, there is no problem if the processed product is conveyed together with the pallet 8 to the next processing line. If it is further removed, the processed and assembled information of the processed product is separated from the product. For this reason,
When the product goes to a new machining / assembly process, it is necessary to read the machining / assembly information up to the present stage once and copy it to the data storage device 9'of the pallet 8'on the machining / assembly line R01 'which is the next process. It is made to be laborious.

As described above, the data storage device 9 integrated with the pallet cannot be moved integrally with the work until the work does not need the work instruction information or machining information.
In particular, when the processed work is supplied as a work to the next assembly line, the data storage device 9 and the work are separated from each other, which is a problem.

It is an object of the present invention to provide a machining information storage device which can read and write machining and assembly information of a work and can be detachably attached to the work.

[0008]

In order to achieve the above-mentioned object, the present invention is a holder and a screw extending from the holder and detachably screwed to a screw groove forming portion for assembling a workpiece before processing and assembling. A thread groove forming part, a memory that is supported by the accommodating part of the holder and stores the machining and assembly information of the work in a readable and writable manner, and is housed in the inner chamber and does not contact the signal transmitting / receiving means on the line base side. And a machining / assembly information transmission / reception control means connected to the machining / assembly control means via the same transmission / reception means.

[0009]

The screw groove forming portion of the holder accommodating the memory and the machining and assembly information transmission / reception control means is detachably screwed to the assembling screw groove forming portion of the workpiece before machining and assembling. A memory for storing information can be integrally attached, and in particular, the positional regulation accuracy between the memory moving along the line and the signal transmitting / receiving means on the line base side can be secured within a predetermined range.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall schematic configuration diagram of a machining information storage device according to the present invention and a machining line R of a cylinder head 10 to which the machining information storage device is mounted. Here, as shown in FIG. 2, the front and rear ends of the cylinder head processing line R are connected to a casting facility R1 for performing a casting process, a cylinder head assembly line R2, and an engine assembly line R3, respectively. Each processing and assembly line R, R1, R2, R3 has its own control system, and these respective controls are interlocked with each other so as to associate the processing control modes with each other.

The casting facility R1 includes, in addition to the casting portion RI-1 of the cylinder head 10, a cylinder block (not shown) and other departments for casting castings in parallel. Each casting product other than the cylinder head is also configured to be supplied to the engine assembly line R3 through a dedicated processing line. The machining line R of the cylinder head 10 includes a conveying device 11 and a plurality of machining machines TM1, TM2, T for punching, tapping, cutting, polishing, etc. arranged along the conveying device 11.
.. and their processing machine control system MC and the like.

Here, the transfer device 11 is a cylinder head 10 as a work which has been subjected to a predetermined processing for each processing cycle.
Is moved by 1 stroke S, that is, 2 from the processing machine of 1.
The work is moved to the processing machine, the workpieces are sequentially positioned at the processing positions before the respective processing machines, and the next processing cycle is started.

Machining machines TM1, TM2, TM3 ...
An automatic tag mounting machine TA is installed at a predetermined position inside.
The tag automatic mounting machine TA is used in the processing line information transmission device 12 which is a part of the processing machine control system MC. That is,
The information transmission device 12 for the machining line is used to perform distributed control on the cylinder head machining line R, the cylinder head assembly line R2, and the engine assembly line R3. Assembling work instruction data is attached to each work, and a control function is provided so that each processing machine can selectively perform a processing process corresponding to each work based on the processing information and the assembly information.

Information transmission device 12 for the processing line here
As shown in FIG. 1, an ID tag 13 as a processing information storage device of the present invention and a cylinder head 10 which is a workpiece when the cylinder head 10 as a workpiece reaches a processing position in front of each processing machine on a processing line R. An antenna 14 as a signal transmitting / receiving unit that faces the ID tag 13 attached to the above set position.
And an ID converter 15 connected to the antenna 14,
It is composed of a controller 16 connected to this converter, and a facility control sequencer 17 for controlling the controller. Here, the antenna 14, the ID converter 15, the controller 16 and the sequencer 17 constitute a processing and assembling control means used in the present invention.

The ID tag 13 is, as shown in FIGS.
A hexagonal columnar holder 20, a threaded portion 21 as a screw groove forming portion extending from one end of the holder 20, and a storage chamber that is recessed on the other end side of the holder 20 and is sealed by a resin cap 23. IC memory 24 accommodated in 22
5, a control unit 26 (see FIG. 5) that controls the read / write processing with respect to the IC memory 24, a transmission / reception circuit 25 and a power supply circuit 27 for processing / assembly information for transmitting / receiving the read / write information to / from the antenna 14 side in a timely manner (see FIG. 5). ) And.

Here, the holder 20 is made of metal, and the hexagonal surface of the outer periphery is used for screwing by a nut runner of the automatic tag mounting machine TA described later. The screw portion 21 is formed so as to be detachably screwed into a screw groove forming portion for assembling a work before processing and assembling, that is, a screw hole 50 for mounting an exhaust manifold of the cylinder head 10. (See FIG. 4) The IC memory 24 stores the work / assembly information of the work in a readable and writable manner.
4 is an electrically rewritable EEPROM having a capacity of 256 bytes. Here, the power supply circuit 27 receives a high-frequency output (reference numeral FP in FIG. 10) from the antenna side when directly facing the antenna 14, receives power supply by high-frequency oscillation, and stores the power, thereby storing the ID tag 13. It supplies the power required for read / write operations.

The IC memory 24 is provided with a storage area for each piece of equipment control data and a quality data area. For example, in the equipment control area here, die classification information of the cylinder head 10 as a work, each machining surface, etc. Cutting information, hole drilling positions such as screw holes, screw hole size information, instructions for implanting stud bolts into screw holes, instructions for inserting valves, instructions for assembling valve springs and cotters, and other work instruction information for operators. It is configured to be taken into the address. On the other hand, in the quality data area, processing start and end time information, surface accuracy and processing dimension accuracy information of each processing part, assembling torque information, mounting angle information, and various processing measurement value information are taken into each designated address. Composed. The type of the stored information in each area is set based on each work, and the initial information is written at the time of the first writing and reading when the IC memory 24 is attached to the work.

The transmission / reception circuit 25 can be driven so as to send / receive a read / write data signal (reference numeral FS in FIG. 10) to / from the antenna 14 in a non-contact manner. The control unit 26 performs a read / write control in which data based on the read / write data signal is written in a predetermined address of the IC memory 24 and the data in the predetermined address of the IC memory 24 is read and transmitted to the antenna side via the transmission / reception circuit 25. As shown in FIG. 3, the antenna 14 is supported by the antenna actuator 29, and when the work reaches the processing position before the processing machine, the ID tag screwed into the screw hole 50 on the cylinder head 10 which is the work. Face up to 13. Here, the antenna actuator 29 is composed of an air cylinder supported on the base of the processing machine, and the air supply / discharge control is performed in a predetermined mode in accordance with the information that the work has reached the processing position. That is,
The antenna 14 is switched by the antenna actuator 29 between the retracted position B1 and the transmission / reception position B2. In particular, at the transmission / reception position B2, the antenna 14 and the ID tag 13 face each other in a non-contact state, and here, the vertical and horizontal displacement between the centerlines of the two and the mutual distance between the two are within an allowable range of about 0 to 3 mm. The position accuracy of the antenna actuator 27 and the carrier device 11 is set so that the allowable range can be secured.

By the way, the antenna 14 is connected to the ID converter 15, and the high frequency signal F sent from the converter is sent.
S (see FIG. 10) is transmitted to the ID tag 13 and vice versa.
The ID converter 1 receives the high frequency signal from the tag 13
In addition, the power supply circuit 27 of the ID tag 13 is supplied with a high-frequency output FP (see FIG. 10) for power supply of a constant level, and the power is supplied by high-frequency oscillation. There is. The ID converter 15 is connected to the controller 16 via a relatively long cable 28. The converter 15 is a signal converter that enables mutual reading and writing of facility control data and quality data between the data storage area of the controller 16 and the ID tag 13.

The controller 16 is contactlessly connected to each ID tag 13 via each antenna attached to each of the machining machines TM1, TM2, TM3, ... In accordance with the instruction of 1), data is exchanged between the ID tag 13 connected to the designated antenna and the obtained data is transferred to the sequencer 17
To send to. The sequencer 17 includes, in addition to the controller 16, the machining machines TM1, TM2, TM3, ...
.. are connected to processing machine controllers (not shown) attached to each of the processing machines, are configured to control all processing machine control systems MC, and are connected to the sequencers of other processing lines R1, R2, R3, and control each other. Information is sent and received. As shown in FIGS. 7 to 9, the tag automatic mounting machine TA includes a turntable 30, a take-out device 31 for guiding the ID tags 13 supplied from the turntable 30 to the gripping position PH one by one, and an ID at the gripping position PH. A lug feeder 33 that holds the tag 13 so that it can be transported and is set to face the exhaust manifold mounting screw hole 50 (see FIG. 4) of the cylinder head 10 at the processing position PW, and the lug feeder 33.
Holder 2 of ID tag 13 supplied by
It is fitted with 0 and rotated, and the ID tag 13 is screwed into the screw hole 5
And a nut runner 34 (see FIG. 9) screwed to 0.

The turntable 30 is, as shown in FIG.
A base 35 for pivotally supporting a vertically oriented drive shaft 36, and a drive shaft 36
A rotating plate 37 attached to the upper end of the
It is composed of a drive source 38 for rotationally driving the drive shaft 36 and a tubular case 39 on six rotary plates. This case 39
In response to the vibration during rotation, each of the ID tags 13 sequentially enters the position regulating hole 40 of the lower wall, and at this time, the ID tag 13 is oriented in a fixed direction and the vertical path of the take-out device 31. Go down 41.

The take-out device 31 is slidably in contact with the lower wall of the rotary plate 37, has a vertically oriented path 41 having an opening of the same type as the position regulating hole 40, and is disposed at the lower end of the path and has a rotating pin 42 and The slide table 43 is configured to hold the ID tags 13 separated one by one for the co-operation of the slide pins 43 and guide the ID tags 13 to the grip position. The lug feed device 33 faces the clamp 45 that holds the ID tag 13 on the slide base 44 at the gripping position PH, and the exhaust manifold mounting screw hole 50 of the cylinder head 10 at the processing position for gripping the sandwiched ID tag 13. And a sliding means 46 for moving it.

The nut runner 34 has a drive source 47 and a shaft 48.
The chuck 47 is provided via the holder 47, and the chuck 47 is configured to fit and hold the hexagonal columnar holder 20 of the ID tag 13 supported by the holding device 45 and rotate the holder 20.

Such an automatic tag mounting machine TA forms a part of the processing machine control system MC, and the automatic tag mounting controller 49 controls the turntable 30, take-out device 31, lug feeder 33 and nut runner 34 in a predetermined mode.
Is operated so that the ID tag 13 is screwed into the screw hole 50 of the cylinder head 10 that sequentially reaches the processing position, and the tag automatic mounting controller 49 is controlled to operate in accordance with a command from the sequencer 17. Is configured.

The operation of the ID tag 13 will be described along the flow of the cylinder head on the processing line. First, the control plan of the sequencer of each line is set so that the target production amount of the engine can be achieved, and then the line R,
The sequencer of R1, R2, R3 sets the production speed of each line and the like, and starts production drive.

At this time, the sequencer 17 of the processing line R
Drives and controls the transport device 11 on the line, the controllers 51 of the processing machine control system MC, and the processing line information transmission device 12 forming a part thereof.

That is, the cylinder head 10 supplied from the casting equipment R1 is sequentially set on the transfer device 11 of the processing line R, and a processing command is issued to drive the processing machine control system MC in a predetermined manufacturing mode. As a result, the cylinder head 10 is sequentially drilled, tapped, cut, ground, etc. at each processing position of each of the machine tools TM1, TM2, TM3, ... In particular, the next machining position after the exhaust manifold mounting screw holes 50 are formed in the cylinder head 10 is the tag mounting position, and the tag automatic mounting controller 49 controls and operates according to the support of the sequencer 17 here.
The operation of screwing the ID tag 13 supported by the lug feeding device 33 by the nut runner 34 into the screw hole 50 of the cylinder head 10 reaching this point is performed in a predetermined mode.

When the cylinder head 10 reaches the next processing position, the processing machine at that position performs a predetermined processing according to the instructions of the processing machine control system. In this case, the sequencer 17 first brings the antenna 14 close to the ID tag 13 so that the antenna 14 faces the ID tag 13 and is connected without contact. On top of that, ID tag 13
High-frequency output F to the power supply circuit 27 via the transceiver circuit 25 of
P is transmitted to supply power by high frequency oscillation. Subsequently, the reading control command signal FS is issued to the control unit 26 via the transmission / reception circuit 25, and the motion control unit reads the equipment control data at the designated address according to the reading mode and outputs the data. Further, the sequencer issues a control command to the controller 51 of the processing machine control system MC so as to selectively operate the processing machine of the processing machine control system MC based on the equipment control data.

In this way, the cylinder head 10 which has sequentially reached each processing position performs a predetermined processing by the processing machine at that position according to the instruction of the processing machine control system MC, and the sequencer each time sends the equipment control data to the ID tag. It is read from the IC memory 24 of 13 and the processing machine control system MC based on the information.
The processing operation of each processing machine is selectively performed. An automatic measuring instrument AS is installed at the final processing position of the processing line R of the processing machine control system MC. An automatic leak tester and an automatic tightening machine are installed here, and a designated measuring section on the work is measured according to the measurement instruction from the sequencer 17, and the measurement data is transferred to the IC via the sequencer 17 and the controller 16.
It is stored in the quality data storage unit of the memory 24.

By the control processing by the processing machine control system MC as described above, the processing processing of the cylinder head 10 is completed, and the predetermined conveying means 5 is provided on the cylinder head assembly line R2.
Moved by 2. The sequencer 17a of the cylinder head assembly line R2 is also connected to the ID tag 13 of the machined cylinder head 10 in a non-contact state in a timely manner via the controller 16a, the ID converter 15a, and the antenna 14a connected thereto. Then, the sequencer 17a of the cylinder head assembly line R2 drives and controls the transport device 11a on the line, the assembly machine control system MCa, and the assembly line information transmission device 12a forming a part thereof.

In this case as well, in order to drive the assembling machine control system MCa in the predetermined assembling mode, the assembling commands are sequentially issued to the controller 5
1a is output. As a result, the assembling machine TMa1, T
At each assembly position of Ma2, TMa3, ..., Valves, cam shafts, etc. are sequentially assembled to the cylinder head 10, and tightening of each bolt is sequentially performed. Also in this case, when the cylinder head 10 reaches each assembly position on the assembly line R2, the sequencer 17a first sets the ID of the antenna 14a.
It connects to the tag 13a, supplies power to the ID tag 13, and then reads the facility control data at the designated address. Further, the sequencer 17a uses the equipment control data to control the controller 5
The operator is instructed to selectively operate the assembly machine via 1a. As a result, the parts are sequentially assembled to the cylinder heads 10. The bolt tightening torque at this time is determined by the torque detector of a nut runner (not shown) for assembly via the controller 51a.
It is also taken in by the ID tag 13 via 7a and the controller 16a.

When the cylinder head 10 completes the assembly on the cylinder head assembly line R2 in this way,
It is supplied to the cylinder head assembly position of the engine assembly line R3. The ID tag 13 of the cylinder head 10
May be eliminated by a nut runner in the final step of this cylinder head assembly line R2. In this case, IC
The data in the memory 24 is read by the sequencer 17a, and the data in each ID tag 13 is totaled. Alternatively, the ID tag 13 is provided on the cylinder head assembly line R2.
It may be supplied together with the cylinder head to the next engine assembly line R3 side.

That is, when the cylinder head 10 with the ID tag 13 is supplied to the engine assembly line R3, the cylinder head 10 with the ID tag 13 is automatically assembled on the cylinder block 53 side at the cylinder head assembly position. Then, at the next assembly position, the sequencer 17b of the engine assembly line R3 is connected to the ID tag 13 via the controller 16b, the ID converter 15b, and the antenna 14b, the information in the IC memory 24 is read, and the sequencer 17b uses this cylinder. An assembly instruction specific to the head is given to the pilot through the controller 51b and a display not shown. When the IC memory 55 is separately installed on the pallet 54 of the engine assembly line R3, the information in the IC memory 24 is read and the information in the IC memory 24 is transferred to the IC memory 55. Subsequent control may be performed. In this case, the ID tag 13 will be removed by a nut runner (not shown) in the next step. ID tag 13
The threaded hole 50 from which is eliminated will be used for assembling the exhaust branch pipe in the subsequent steps.

Thus, the quality data of the ID tag 13 is collected by the sequencer 17a or 17b.
Then, each quality data is timely converted into a characteristic graph by an appropriate aggregation method (an example is shown in the figure) and used for quality control.

The information in the IC memory 24 may be transferred to the molly 52 for subsequent control. In this case, the ID tag 13 will be removed by the nut runner in the next step. The screw hole 50 from which the ID tag 13 is thus removed will be used for assembling the exhaust branch pipe in the subsequent steps.

As described above, the quality data of the ID tag 13 is collected by the sequencers 17, 17a and 17b.
Then, each quality data is timely and characteristically graphed by an appropriate aggregation method (as an example, the distribution of measured values is shown in FIG. 11) and used for quality control.

In the above-mentioned processing, the ID tag 13 is the IC
Although the memory 24 is housed in the housing portion 22, instead of this, the plate-shaped IC memory may be fixed to the top surface of the holder 20 with a screw or other fixing means.

[0038]

As described above, according to the present invention, since a memory (IC memory) for storing machining and assembling information can be integrally attached to a workpiece, distributed control is performed especially in a machining and assembling line for small-quantity multi-product production. In this case, the holder that supports the memory can be removably screwed into the thread groove forming part of the existing work for mounting, so there is no need to provide a screw hole for mounting, and the cost can be reduced. Further, since the work is screwed to the work, the positional regulation accuracy between the memory and the signal transmission / reception means on the line base side can be easily ensured within a predetermined range, and the reading / writing precision of the processing and assembly information can be easily ensured. There is also.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a processing line information transmission device including an ID tag of the present invention.

FIG. 2 is a layout view of a processing line of a processing machine control system MC including the processing line information transmission device of FIG. 1, and a casting device, a cylinder head assembly line, and an engine assembly line device.

3 is an explanatory diagram of a driving unit of the ID tag of FIG.

4A is a front view of the ID tag shown in FIG. 1, and FIG.
It is sectional drawing of a D tag.

FIG. 5 is a functional block diagram of an ID tag 13.

6 is a side view of the cylinder head of FIG. 1. FIG.

FIG. 7 is a plan view and a side view of a turntable of the tag automatic mounting device.

FIG. 8 is a side view of a take-out device of the automatic tag mounting device.

FIG. 9 is a side view of a lug feeder and a nut runner of the tag automatic mounting device.

10 is a waveform diagram of an example of a transmission / reception signal of the ID tag of FIG.

11 is a total characteristic graph of quality data from the processing machine control system MC of FIG.

FIG. 12 is a schematic view of a processing and assembly line that adopts a conventional centralized control method.

FIG. 13 is a schematic diagram of a processing and assembly line that adopts a conventional distributed control method.

[Explanation of symbols]

 10 Work 12 Information Transmission Device for Processing Line 13 ID Tag 14 Antenna 15 ID Converter 16 Controller 17 Sequencer 20 Holder 21 Screw Part 22 Storage Room 24 IC Memory 25 Transmitter / Receiver Circuit 26 Control Unit MC Machine Control System

Claims (1)

[Claims] 1. A holder, a screw groove forming portion extending from the holder and detachably screwed to a mounting screw groove forming portion of a workpiece before processing and assembly, and supported by an accommodating portion of the holder. A memory for reading and writing work / assembly information of the work, and a processing / assembly control means via the transmission / reception means when the memory is housed in the inner chamber and arranged opposite to the signal transmission / reception means on the line base side. A machining information storage device having a machining and assembly information transmission / reception control means connected in a non-contact manner.