JP2616291B2 - Processing information storage 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 processing assembly line, which is a facility of a manufacturing plant or the like, and stores, in a readable and writable manner, processing information and product accuracy information of a work to be processed and assembled therein, and a movable processing information storage. Related to the device.

[0002]

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

However, when such a centralized control system is employed, at the entrance side of the processing line R0, the type detecting device first determines the type of the work, and transmits a processing command corresponding to the same type to each processing machine. Will be done. For this reason, in a small-quantity multi-model production line, it takes time to determine the model, and moreover, there are many parts where the machining commands are different from each other, which complicates the control of the machining control device 4 and lowers the control speed. In addition to it,
Assuming that one processing cycle is, for example, 40 seconds, a transfer time of about 35 seconds is required, and in the remaining 5 seconds, assembling work instruction data and processing assembling instruction data for the operator of each work are transmitted to the main processing control device 4 and each processing machine 3. It will be exchanged between and. In this case, when a main host computer is used as the machining control device, it may not be possible to exchange the assembling work instruction data and machining data of each workpiece during the five seconds.

Therefore, instead of such centralized control, as shown in FIG. 13, each of the processing machines 3 on the work processing line is independently controlled and operated by each controller 6 in accordance with processing and assembly information corresponding to each work. A distributed control system has been proposed in which a main host computer 7 exchanges control signals with these controllers 6 to receive quality information. In the processing assembly line R01 to which this distributed control method is applied, as shown in FIG. 13, data that can be moved by holding the work instruction information and the processing information for the work 2 to be performed by the operator on the pallet 8 supporting the work 2. The 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 between the controller 6 and the controller 6 in a non-contact state. Work instruction information and processing information to be performed by an operator for each work are read and written, and the processing is performed. The controller 6 processes each of the processing machines 3 in accordance with the data, detects the quality information, and outputs it to add. The form of the workpiece supplied to the processing / assembly line may be a single product, a set of assembled processed single products, or an unfinished product at the time of assembly. When these single items, collective parts, and unfinished products are supplied to the processing and assembly line, they are placed directly on the conveying means or placed on a dedicated pallet and subjected to the processing and assembly processing. I have.

[0005]

The data storage device 9 which can hold and move data used in the conventional distributed control moves together with the pallet 8. Therefore, when processing on one processing line is completed and processing on the next processing line is started, there is no problem if the processed product is transported to the next processing line together with the pallet 8. If it is removed more, the processed assembly information of the processed product is separated from the product. For this reason,
When the product goes to a new processing and assembling process, it is necessary to read the processing and assembling information up to the present stage once and transfer it to the data storage device 9 'of the pallet 8' on the processing and assembling line R01 'which forms the next process. , It takes time and effort.

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

SUMMARY OF THE INVENTION An object of the present invention is to provide a processing information storage device which can read and write processing assembly information of a work and can be detachably and integrally attached to the work.

[0008]

In order to achieve the above object, the present invention provides a holder and a screw extending from the holder and detachably screwed to a thread groove forming portion for assembling a work before machining and assembling. A screw groove forming portion, a memory supported by the housing portion of the holder and storing the work assembly information of the work in a readable and writable manner, and a non-contacting signal transmission / reception means housed in the inner chamber and provided on the line substrate side. And a processing assembly information transmission / reception control means connected to the processing / assembly control means via the transmission / reception means when they are arranged opposite to each other.

[0009]

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

[0010]

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

The casting facility R1 is provided with a section for casting a cylinder block (not shown) and other castings in parallel in addition to the casting section RI-1 of the cylinder head 10. Each casting other than the cylinder head is configured to supply the product to the engine assembly line R3 via a dedicated processing line. The processing line R of the cylinder head 10 includes a transfer device 11 and a plurality of machine processing machines TM1, TM2, T
M3... And their processing machine control system MC.

Here, the transfer device 11 is a cylinder head 10 as a work which has been subjected to a predetermined processing at each processing cycle.
Is moved by one stroke S, that is, 2
The workpiece is moved to the next processing machine, and is sequentially positioned at the processing position in front of each processing machine, so that the next processing cycle is started.

[0013] Machining machines TM1, TM2, TM3 ...
-An automatic tag mounting machine TA is arranged at a predetermined position in the inside.
This automatic tag mounting machine TA is used in the processing line information transmission device 12 which forms a part of the processing machine control system MC. That is,
The information transmission device 12 for the processing line is provided with selected processing / assembly instruction data and operator data for each work required for performing distributed control on the processing line R of the cylinder head, the cylinder head assembly line R2, and the engine assembly line R3. Is provided for each work, and based on the processing information and the assembly information, the processing is controlled so that each processing machine can selectively perform the processing corresponding to the work.

The information transmission device 12 for the processing line here
As shown in FIG. 1, an ID tag 13 as a processing information storage device according to the present invention, and a cylinder head 10 serving as a workpiece when a work reaches a processing position of a processing line R in front of each processing machine. An antenna 14 as a signal transmitting / receiving means directly facing 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 the converter and a sequencer 17 for equipment control for controlling the controller. Here, the antenna 14, the ID converter 15, the controller 16 and the sequencer 17 constitute a processing and assembly control means used in the present invention.

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

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 attaching machine TA described later. The screw portion 21 is formed so as to be detachably screwed into a screw groove forming portion for assembling the work before processing and assembly, that is, a screw hole 50 for mounting the 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.
Reference numeral 4 denotes an electrically rewritable EEPROM having a capacity of 256 bytes. Here, the power supply circuit 27 receives the high-frequency output (FP in FIG. 10) from the antenna side when facing the antenna 14, receives the power supply by the high-frequency oscillation, and stores it. Provides the power required for read and write operations.

The IC memory 24 has a storage area for each piece of equipment control data and a quality data area. For example, the equipment control area in this IC memory 24 includes the type classification information of the cylinder head 10 as a work, and each processing surface. For each of the specified information, such as cutting information, hole processing positions such as screw holes, screw hole size information, stud bolt implanting instructions into screw holes, valve insertion instructions, valve spring and cotter assembling instructions, and other operator work instruction information It is configured to be taken into an address. On the other hand, in the quality data area, the processing start and end time information, the surface accuracy and processing dimensional accuracy information of each processing part, each assembling torque information, mounting angle information, and various processing measurement value information are taken into each specified address. Be composed. The type of storage 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 mounted on the work.

The transmission / reception circuit 25 can be driven to transmit and receive a read / write data signal (reference numeral FS in FIG. 10) to and from the antenna 14 in a non-contact manner. The control unit 26 performs read / write control of writing data based on the read / write data signal to a predetermined address of the IC memory 24, reading data at a predetermined address of the IC memory 24, and transmitting the data to the antenna via the transmission / reception circuit 25. As shown in FIG. 3, the antenna 14 is supported by an antenna actuator 29. When the workpiece reaches a processing position in front of the processing machine, the ID tag is screwed into a screw hole 50 on the cylinder head 10 as the workpiece. Facing 13 Here, the antenna actuator 29 is composed of an air cylinder supported on the base on the processing machine side, and the supply and discharge control of the air is performed in a predetermined mode in accordance with information that the workpiece has reached the processing position. That is,
The antenna 14 is switched by the antenna actuator 29 between the retreat 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. Here, the vertical and horizontal displacement between the center lines of the two and the mutual interval between the two are within an allowable range of about 0 to 3 mm. , And the positional accuracy of the antenna actuator 27 and the transport device 11 is set so as to secure this allowable range.

Incidentally, the antenna 14 is connected to the ID converter 15, and the high-frequency signal F
S (see FIG. 10) to the ID tag 13 and, conversely, the ID
ID converter 1 receives a high frequency signal from tag 13
5 and, at the appropriate time, in place of these data transmission / reception signals, supply a high-frequency output FP (see FIG. 10) for power supply at a constant level to the power supply circuit 27 of the ID tag 13 and supply power by high-frequency oscillation. I have. 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 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 connected to each ID tag 13 through each antenna attached to each of the machine tools TM1, TM2, TM3,... Of the processing line R in a non-contact manner. According to this instruction, data is exchanged between the ID tag 13 connected to the designated antenna and the obtained data is transmitted to the sequencer 17.
To send to. The sequencer 17 is, besides the controller 16, a machining machine TM1, TM2, TM3,.
.. are connected to a processing machine controller (not shown) attached to each of them, and are configured to be able to control all of the processing machine control systems MC. Further, they are mutually connected to the sequencers of the other processing lines R1, R2, and R3 to control each other. Sending and receiving information. As shown in FIGS. 7 to 9, the automatic tag attaching machine TA includes a turntable 30, a take-out device 31 for guiding the ID tags 13 supplied from the turntable 30 one by one to a holding position PH, and an ID at the holding position PH. A lag feeder 33 for gripping the tag 13 so that it can be transported and setting it so as to face the exhaust manifold mounting screw hole 50 (see FIG. 4) of the cylinder head 10 at the processing position PW;
Hexagonal column-shaped holder 2 of ID tag 13 supplied by
0 and rotate it, and insert the ID tag 13 into the screw hole 5.
And a nut runner 34 (see FIG. 9) that is screwed into the nut runner.

The turntable 30 is, as shown in FIG.
A base 35 for pivotally supporting a vertical drive shaft 36;
A rotating plate 37 attached to the upper end of the rotator and rotating in the horizontal direction;
It comprises a drive source 38 for rotating the drive shaft 36 and a cylindrical case 39 on six rotating plates. This case 39
Each ID tag 13 sequentially enters the position regulating hole 40 on the lower wall in response to vibration during rotation. At this time, the ID tag 13 is oriented in a certain direction, and the ID tag 13 is oriented in a vertical direction of the take-out device 31. Descend 41.

The take-out device 31 is slidably in contact with the lower wall of the rotary plate 37 and has a vertical 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 A slide table 44 holds the ID tags 13 separated one by one by the co-operation of the slide pins 43 and guides them to the gripping position. The lag feeder 33 faces the holding device 45 for holding the ID tag 13 on the slide base 44 at the holding position PH, and faces the screw hole 50 for mounting the exhaust manifold of the cylinder head 10 at the processing position. And a sliding means 46 for moving the slider.

The nut runner 34 includes a drive source 47 and a shaft 48.
The chuck 47 is provided with the chuck 47, and the chuck 47 is configured to fit and hold the hexagonal prism-shaped holder 20 of the ID tag 13 supported by the holding device 45 and rotate it.

The automatic tag mounting machine TA forms a part of the processing machine control system MC, and is controlled by the automatic tag mounting controller 49 in a predetermined mode in the turntable 30, the take-out device 31, the lug feed device 33, and the nut runner 34.
And the ID tag 13 is screwed into the screw hole 50 of the cylinder head 10 which sequentially reaches the processing position. The controller 49 for automatically mounting the tag operates in accordance with a command from the sequencer 17. Is configured.

The operation of the ID tag 13 will be described with reference to the flow of the cylinder head on the processing line. First, a control plan of the sequencer of each line is set so as to achieve the target production amount of the engine.
The sequencers R1, R2, and R3 set the production speed and the like of each line, and start production driving.

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

That is, the cylinder head 10 supplied from the casting facility 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. Thus, drilling, tapping, cutting, polishing, and the like are sequentially performed on the cylinder head 10 at each processing position of each of the machine tools TM1, TM2, TM3,.... In particular, the next processing position after the exhaust manifold mounting screw hole 50 is formed in the cylinder head 10 is set as 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 feeder 33 into the screw hole 50 of the cylinder head 10 that has reached here by the nut runner 34 is performed in a predetermined mode.

When the cylinder head 10 reaches the next processing position, a predetermined processing is performed by the processing machine at that position in accordance with an instruction from the processing machine control system. In this case, the sequencer 17 first brings the antenna 14 close to the ID tag 13 so as to face the ID tag 13 and connects them in a non-contact manner. Then, the ID tag 13
The high frequency output F is supplied to the power supply circuit 27 through the transmission / reception circuit 25
By transmitting P, power is supplied by high-frequency oscillation. Subsequently, a read control command signal FS is issued to the control unit 26 via the transmission / reception circuit 25, and the dynamic control unit reads the equipment control data at the designated address according to the read mode, and outputs the data. Further, the sequencer issues a control command to the controller 51 of the processing machine control system MC to selectively operate the processing machine of the processing machine control system MC based on the equipment control data.

As described above, the cylinder head 10 which has sequentially reached each processing position performs predetermined processing by the processing machine at that position in accordance with the instruction of the processing machine control system MC, and each time the sequencer transmits the equipment control data to the ID tag. 13 and read from the IC memory 24, and based on the information, the processing machine control system MC
The processing operation of each processing machine is selectively performed. An automatic measuring device AS is provided 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 provided here. According to the measurement instruction of the sequencer 17, the measurement of the designated measuring section on the work is performed, and the measurement data is stored in the IC via the sequencer 17 and the controller 16.
The quality data is stored in the storage section of the memory 24.

By the control processing in the processing machine control system MC, the processing of the cylinder head 10 is terminated, and the predetermined transfer means 5 is transferred to the cylinder head assembly line R2.
2 moved. The sequencer 17a of the cylinder head assembly line R2 is also connected to the ID tag 13 of the processed cylinder head 10 in a timely and non-contact manner via the controller 16a, ID converter 15a, and antenna 14a connected thereto. The sequencer 17a of the cylinder head assembly line R2 drives and controls the transfer device 11a on the line, the assembly machine control system MCa, and the assembly line information transmission device 12a that forms a part thereof.

Also in this case, an assembling command is sequentially issued to the controller 5 to drive the assembling machine control system MCa in a predetermined assembling mode.
1a. Thereby, the assembling machines TMa1, T
At the assembly positions Ma2, TMa3,..., Valves, camshafts, and the like are sequentially assembled to the cylinder head 10, and bolts are sequentially tightened. Also in this case, when the cylinder head 10 reaches each of the assembly positions on the assembly line R2, the sequencer 17a first sets the antenna 14a to ID.
It is connected to the tag 13a, supplies power to the ID tag 13, and subsequently reads equipment control data at the designated address. Further, the sequencer 17a is connected to the controller 5 based on the equipment control data.
An instruction to selectively operate the assembler is provided to the operator via 1a. As a result, the parts are assembled to each cylinder head 10 sequentially. The bolt tightening torque at this time is determined by a torque detector of a nut runner (not shown) for assembly via the controller 51a.
The data is also taken into the ID tag 13 via the controller 7a and the controller 16a.

When the cylinder head 10 completes the assembly on the cylinder head assembly line R2 in this manner,
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 removed by a nut runner in the final step of this cylinder head assembly line R2.
The data in the memory 24 is read by the sequencer 17a, and the data of each ID tag 13 is totaled. Alternatively, the ID tag 13 is connected to the cylinder head assembly line R2.
It may be supplied to the next engine assembly line R3 together with the cylinder head.

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 to the cylinder block 53 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 A head-specific assembly instruction is issued to the pilot via the controller 51b and a display (not shown). When an IC memory 55 is separately provided 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 is removed by a nut runner (not shown) in the next step. Thus, the ID tag 13
The screw hole 50 from which is removed is 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 sequencer 17a or 17b.
Then, each quality data is timely converted into a characteristic graph by an appropriate tabulation method (an example is shown in the figure), and is used for quality control.

The information in the IC memory 24 may be transferred to the memory 52 to perform subsequent control. In this case, the ID tag 13 is removed by a nut runner in the next step. The screw hole 50 from which the ID tag 13 has been removed is 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, 17b.
Then, each quality data is timely converted into a characteristic graph by an appropriate aggregation method (for example, the distribution of measured values is shown in FIG. 11), and is used for quality control.

In the above process, the ID tag 13
Although the memory 24 is accommodated in the accommodating portion 22, a configuration in which a plate-shaped IC memory is fixed to the top surface of the holder 20 by screws or other fixing means may be adopted instead.

[0038]

As described above, according to the present invention, a memory (IC memory) for storing processing and assembling information can be integrally attached to a work. In this case, the holder that supports the memory can be removably screwed to the existing thread groove for mounting the work.Therefore, there is no need to provide screw holes for mounting, and cost reduction is achieved. Further, since it is screwed to the work, the position regulation accuracy between the memory and the signal transmission / reception means on the line substrate side can be easily secured in a predetermined range, and the reading and writing accuracy of the processing assembly information can be easily secured. There is also.

[Brief description of the 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 diagram 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.

FIG. 3 is an explanatory diagram of a driving unit of the ID tag of FIG. 1;

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

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

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

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

FIG. 8 is a side view of the 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 automatic tag mounting apparatus.

FIG. 10 is a waveform diagram of an example of a transmission / reception signal of the ID tag of FIG. 1;

11 is a total characteristic graph of quality data from the processing machine control system MC of FIG. 1;

FIG. 12 is a schematic diagram of a processing and assembly line employing a conventional centralized control system.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Work 12 Information transmission device for processing lines 13 ID tag 14 Antenna 15 ID converter 16 Controller 17 Sequencer 20 Holder 21 Screw part 22 Housing room 24 IC memory 25 Transmission / reception circuit 26 Control part MC Processing machine control system

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-221951 (JP, A) JP-A-61-260970 (JP, A) Real opening 63-140327 (JP, U)

Claims (1)

(57) [Claims] 1. A holder, a screw groove forming portion extending from the holder and detachably screwed to a screw groove forming portion for assembling a work before machining and assembling, and supported by a housing portion of the holder. A memory for readable and writable processing and assembly information of the work, and a processing and assembly control means that is accommodated in the inner chamber and is arranged to face the signal transmission / reception means on the side of the line base body through the transmission / reception means. A processing information storage device having processing assembly information transmission / reception control means connected in a non-contact manner.