JPH02212051A - Equipment for machine tool - Google Patents

Abstract

PURPOSE:To improve the efficiency in an arrangement work at a loading station by providing an allocating mans allocating the loading station carried out on each pallet by a transfer means from a work machine, warehouse and so on. CONSTITUTION:An FMS machine tool equipment installs at plural places a loading station M2 for performing the arrangement work relating to a jig and work and carries out to one of loading stations M2 from the equipment M4 of a work machine and warehouse by loading the pallet M1 placed with the work and jig, etc., by a transfer means M3. In this case, the loading station M2 carried out is allocated on each pallet M1 by an allocating means M5, taking into consideration a material station, the distance to a shipping port, etc., the instruction is given to a carry-out means M3 and the pallet M1 is carried out. Thus, the arrangement work at the loading station can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to machine tool equipment in which loading station cylinders are installed at a plurality of locations.

[Prior Art] This type of machine tool equipment is equipped with a shelf-type warehouse for storing pallets and a plurality of machining centers, and a stacker crane moves pallets from the shelf-type warehouse or the machining center according to instructions from a central control device. A flexible manufacturing system (hereinafter also referred to as FMS) is known in which workpieces are taken out and carried to a loading station, and the workpieces are fixed and mounted on and removed from a pallet on the loading station.

In such an FMS, pallets are immediately taken out when a loading station becomes vacant, so that the loading station is always filled with pallets. In this way, the efficiency of the time-consuming setup work is improved.

[Problem M to be solved by the invention] However, there has been a demand for improvement of the poverty class as described below.

For example, in an FMS equipped with a loading station a near a material station and a loading station b located far away from the material station, a pallet that requires workpiece mounting work is transported to loading station b located far away. There are times when you will be rejected. As a result, the work must be brought from the dropped material station and setup work required, which requires a lot of effort. Also, if multiple material stations are arranged depending on the type of work, Similar I? One problem occurs. Alternatively, when a shipping port is determined in advance for each work, it is desirable to carry out the work to a loading station near the shipping port in accordance with the work as much as possible.

The present invention has been made in view of the above points, and an object of the present invention is to improve the setup work at a loading station.

Moxibustion 0 ■ Precepts [Means for solving the problem] The machine tool equipment of the present invention, which has been made to achieve the above object, as illustrated in FIG. Loading stations M2 for carrying out loading work are installed at multiple locations, and transport means M3
The machine tool equipment for transporting the barre) Ml from the equipment M4 such as a processing machine or a warehouse to the loading station M2 is provided with loading station allocation means M5 that allocates the loading station M2 to be transported to each of the pallets. The gist is:

[Function] The machine tool equipment of the present invention is suitable for equipment M such as processing machines and warehouses.
The pallet M1 is unloaded from the loading station M1, and the pallet M1 is carried out to the loading station M2 assigned to each pallet M1 by the loading station allocating means M5.

[Examples] Next, preferred embodiments will be described with reference to the drawings in order to further clarify the structure of the present invention.

No. 311 shows an overview of the FMS that adopts the present invention, and No. 4
The figure shows its electrical configuration.

As shown in FIG. 3, the FMS of this embodiment includes three machining centers 5, 10.15, a jig 11124 for storing a pallet 19 to which various jigs 18 are attached, and a jig 11124 for storing a pallet 19 to which various jigs 18 are attached. There are three loading stations (hereinafter referred to as LDS) 25, from which removal is performed.
28.33, the stacker crane 37 that transports the pallet 19 between each machining center 5, 10.15, the jig shelf 24, each LDS 25, 28.33, etc. A tool vibrator 45 containing various tools, a transfer robot 62 on an elevated rail 55 that transfers a tool 48 between the tool vibrator 45 and each machining center 5, 10.15, and a program used by each machining center 5, 10.15. an FMS control device 70 that performs various processing such as downloading down 17 and outputting an operation signal to be described later to the stacker crane 37; and a crane management control device that performs processing such as managing the tools 48 stored in the tool vibe 45. The tool 48 in the tool vibrator 45 is transferred to the transfer robot 6 in response to instructions from the device 80 and the tool management control device 80.
A tool high-pull control device 'It, 90 controls the tool 48 transferred by the transfer robot 62 to be stored in a predetermined location within the tool vibe 45; 62 by optical communication, and each L
Jig 18 on pallet 19 placed on DS28.33
A workpiece picture display device 97 that displays the workpiece to be attached to the
, a tool presetter 99, etc.

Note that the cleaning I% 103 is for washing away chips and the like from the workpiece fixed to the jig 18. A baguette 106 containing a large number of works is placed on the material station 105 and is moved by a roller conveyor.

The FMS'i control device 70 includes a microprocessor (hereinafter referred to as CPU), RAM7ob, and RO.
Mainly M70c, along with these, a hard disk 70d as an external storage device, a CRT 70e, and a keyboard 70f
, amplifier 70g, input/output circuit (I10 boat) 70h,
It is configured as a logic operation circuit in which two interface circuits 70i and 70j, etc. are interconnected by a bus 70k.

The amplifier 70g has a value of 61 for the palette ID described later.
PM sensors 25a, 28a, 33a that read and write information
are connected, and three LDS25, 28.33
are fixed to each. PM sensors 25a, 28a, 33
A is a non-contact type that performs both recording and reading, and is a well-known read/write device that uses magnetic induction.

On the other hand, the pallet ID 19a is embedded in the side surface of the pallet 19 without being exposed, and is a well-known storage medium having a memory capacity of 2 bytes and read and written by external magnetic induction. Palette ID] 9a contains the pallet number and jig number.

Process No. 1 multi-piece machining data, etc. are registered.

As shown in FIG. 5, the aforementioned PM sensors 25a, 28a, 33a are connected to each I-DS 25, 28.
When the pallet is transported to the predetermined position of 33, the pallet T D
I 9a is positioned so that it can read and write information.

The input/output circuit 70h includes the loading station operation panels 25d, 28d, 33d, well-known numerical control devices rI15a, 10a, 15a built in each of the three machining centers 5, 10.15, and program controllers 5b, 10. )), 15b are connected.

The numerical I control devices 5a, 10a, 15a are equipped with PM sensors 5f, ]Of, consisting of read/write heads similar to those described above, via amplifiers 5e, 10e, 15e, respectively.
15f is connected. As shown in FIG. 6, the PM sensors 5f, 10f, 15f
Pallet I of pallet 19 is installed at a predetermined location of 0.15 mm and is brought in by stacker crane 37.
It is positioned to face D19a.

Further, the numerical control devices 5a, 10a, 15a are equipped with read/write heads similar to those described above via amplifiers 5g, 10g, 15g.
15h is connected. TM sensor 5h, 10h, 1
5h is the tool ID embedded in the 1st stud of the tool
This is for reading and writing information regarding tools.

Tool [D is attached to pallet ID 19a
It has the same structure as the palette ID, except that it is different from the palette ID. Information such as the name of tool No. 1, life time, and tool usage time is registered in this tool ID.

The program controllers 5t), 10b, 15b in the machining center 5.10.15 are connected to the transfer robot controller 93.

Additionally, a stacker controller 37a that controls the stacker crane 37 is connected to the interface R70i via an interface 37h.

A tool tube IM control device 80 is connected to the interface circuit 70j via an interface 80m provided therein.

The tool management system 80 is the FMS rr mentioned above.
l Similar to the control device 70, CPLJ80a, RAM80b
, ROM80c, these and CRT80d,
It is configured as a logic operation circuit in which a 4-board 80e, an amplifier 80f, three interface circuits 80g, 80h, 80i, etc. are interconnected by a bus 80k.

A 21'M sensor 99a is connected to the amplifier 80f, and is fixed at a predetermined location on the tool presetter 99. T
The M sensor 99a reads and writes information such as the tool length measured by the tool presetter 99 to and from the tool TD.

The interface circuit 80g has a tool presetter 9.
9 built-in tool presetter controller 99b is connected. The tool presetter controller 99b performs control processing such as tool length measurement according to commands from the tool management control device 80.

A tool vibe controller 90 that performs the above-described processing is connected to the interface circuit 80h, and manages the tools stored in the tool vibe 45.

The interface circuit 80i is connected to the transfer robot controller 93.

The stacker controller 37a described above has an amplifier 37b.
This 1) M sensor 37e drives the servo motor 37c that drives the stacker crane 37 via the amplifier 37d, and reads and writes information to the pallet If) 19a using the PM sensor 37e via the amplifier 37d. As shown in Figure 7, the pallet a of the stacker crane 37
Pallet ID19a of pallet 19 placed a on the stand
It is located at a position opposite to.

In addition, the above-mentioned transfer robot controller 93° tool vibe controller 90. Although not shown, the tool presetter controller 99b and the stacker controller 37a are configured as logical operation circuits using a microprocessor, like the FMSI 11 control device 70 and the like.

Next, the operation of the FMS of this embodiment having the configuration shown above will be explained.

The EMS of this embodiment performs automatic machining operations in order of priority according to a schedule set in advance by an operator.

The following is a description based on 70 grams executed by the FMSf+l control device 70.

FIG. 8 shows a schedule display screen displayed on the CRT 70e of the FMS control device 70. The production schedule is created in advance by the operator and stored in the RAM 70b as a schedule table.

As shown in the figure, part numbers corresponding to the workpieces to be machined are listed on one display screen, and processing is performed sequentially according to the priority order of the part numbers, but the individual setting items for each part number are explained in the flowchart described later. We will explain each step in each step.

After startup, the FMS control device 70 executes a routine for carrying out a setup pallet to the LDS and a routine for carrying in a machining center, along with other control programs such as a production management program and a tool exchange program.

The processed pallet unloading routine is executed repeatedly.

9A, 9B, and 9C are flowcharts of a routine for carrying out a setup pallet to Log, a routine for carrying it into a machining center, and a routine for carrying out a processed pallet, respectively.

When the VMS control device 70 executes the routine for carrying out the setup pallet to the LDS, the
8. Three PM sensors 25a, 28a installed in 33
, 33a (step 5110), and determines whether the pallet 19 is not placed and the LDS 25.28.33 is empty (step S120).

If an empty LDS exists, the part number for the next process is searched from the <schedule> table previously stored in the RAM 70b (step 8130).

Furthermore, using the pallet number corresponding to the part number as a search keyword, the LDS and FIX values for the corresponding pallet number are read from the pallet table previously stored in the RAM 70b (step 5140).
, out of the three LDS25.28.33, the LD that can be carried out
Check whether S is specified. In this embodiment, DS25.28.33 (it 410 in Figure 10)
3. F IX (Qfti■.

(equivalent to ■) is specified for workpiece attachment.

These specifications are determined by the positions of the material station 105 and the work picture display device 97, and can be changed for each pallet number.

I) S25, 28.33 and step 51
It is determined whether the empty LDS confirmed in step 20 matches (step 5150). If the result of the determination is that they match, a transport command is issued to the stacker controller 37a, and this routine is ended with -U. (Step 9160), the stacker crane 37 is activated by the stacker controller 37a that received the transportation command, and the stacker crane 37
The corresponding pallet 19 is carried out from 4 and placed on the empty LDS.

If the LDSs do not match in step 5150, this routine is temporarily terminated without issuing a transport command to the stacker controller 37a.

Further, even if the LDS is not vacant in step 5120, this routine is ended without executing anything thereafter.

With respect to the pallet 19 placed on the LDS 25, 28, 33, the operator attaches the work to the jig 18 fixing the pallet 19 while using the work picture display device 97.

After completing the setup work, the operator notifies the FMS control device 70 of the completion of the setup by pressing keys on the loading station machines 25d, 28 (1, 33d).

When the FMS control unit '1170 receives the setup completion signal,
The program of the machining center carry-in routine is executed at an appropriate timing, and processing for carrying the set-up pallet 19 into the machining center 5, 10, 15 is performed.

No. 91W(B) is a flowchart showing a machining center loading routine.

As shown, the FMS controller 70 initially
) It is determined whether the setup pallet 19 is placed on S25, 28, or 33 (step 5210).

When placed, the PM sensors 25a28a, 33a
Pallet II of set-up pallet 19 via
9 Read the palette number from a (step 5220
>.

<Palette data> corresponding to the loaded palette number
Read information about machining center designation from HACIIINF NO item 9 (step 8230)
, FIG. 1O shows a display screen of ``Pallet Data'', in which the machining centers that can process the part number are shown in the number range 1 to 8 in the HMCIIINF NO column. Eight machining centers can be installed, but in this embodiment only three are installed, so numbers 1 to 3 are targeted.

Next, from the schedule table in Figure 8, select item S.
The value of HI HC is read and it is checked whether the machining center is mechanically fixed (step 5240).

Machine-fixed means that all workpieces are machined using the same machining center that machined the first workpiece in the same machine loop to ensure uniform machining accuracy. No. 8113H[HC
The values Y and S represent mechanical fixation, S specifically indicates a single block function, and N represents non-mechanical fixation.

It is determined whether a machining center is specified from the information read in step 5230, and further, it is determined whether the machine is fixed from the information read in step 5240 (step 5250, step 52
60).

First, we will explain the case where it is specified and mechanically fixed.

The FMS control device' If not, it shall be included.

When the designated machining center is vacant, the control device 70 determines whether or not this is the first workpiece machining in the same machining group (step 5280>).

When processing a workpiece for the first time, the pallet 19 containing the workpiece is carried into a designated vacant machining center (step 5290).

At the time of loading, the FMSit,l control device 70 issues a command to the stacker controller 37a, and the stacker crane 37 is started by the stacker crane controller 37a.

When the loading is finished, the l"MS control device 70
The number of the machining center is written in the CIIT HCNO column of the pallet status shown in FIG.

If the machining center number is already written in the Cl1r HCNO column, it will be overwritten. In addition, if there are multiple workpieces in the same machining group and the workpieces are stored on multiple pallets 19, the status of all pallets will be changed when the first pallet 19 in the Canadian loop is brought in. Update the value of CUT HCNO.

Further, after being carried in, the FMS control device 70 loads the machine program into the machining center according to other control routines. The machining center automatically performs machining according to the loaded machine program.

If the machining is the second or more workpiece in the same machining group in step 8280, the number of the machining center used is read from the CIIT ICNO column of the corresponding <Pallet Status>, and it is checked whether the machining center is vacant (step S310 ).

If the machining center is vacant, the pallet 19 is carried into the designated and machine-fixed machining center (step 53).
20) After the loading, a write process similar to step 5290 is performed. If the space is not empty, nothing is executed thereafter and this routine is temporarily terminated.

Further, even if the machining center specified in step 5270 is not vacant, this routine is temporarily terminated without executing anything thereafter.

Next, if the machining center is specified but the machine is not fixed, that is, "N" is selected in step 5260.
We will explain what happens when it is determined that

The FMS i control device rIt70 determines whether the designated machining center is vacant (step 5).
340), and when the state is empty, the step 5290 described above
Deliver pallet 19 to the machining center according to
The number of the machining center is written in the NO column and the pallet ID 19, and this routine is temporarily ended. If it is not empty, do nothing further and end this routine once.

Next, a case where no machining center is specified in step 5250 will be described.

FMS i! II Control Device Child Device 70> It is determined from the table whether it is mechanically fixed (step 5350).

When the machine is fixed, it is determined whether this is the first workpiece machining in the same cutting loop (step 5360).

When processing a workpiece for the first time, the pallet 19 is carried into an empty machining center, and after the pallet 19 is carried in, step 5 is performed.
290 and Ii'i are performed, and this routine is temporarily terminated (steps 5370 and 5380).

Step 836: If none of the machining centers is vacant, this routine is temporarily terminated without executing anything thereafter.
If 0 is the second or more processing of the same Canadian loop, l? The MS control bag 670 reads the number of the machine-fixed machining center from the <pallet status> (step 5390).

If the corresponding machining center is vacant, the pallet 19 is carried into the machining center, and after the pallet 19 is carried in, the same writing process as step 5290 is performed and this routine is temporarily terminated (steps 5400 and 5410). After this, do nothing and end this routine once.

On the other hand, when it is determined in step 5210 that there is no set-up pallet 19 on the LDS 28, 33, it is determined whether or not there is a set-up pallet 19 on the shelf 24 (step 542).
0).

If there is a set-up pallet 19 on the shelf 1124, the process moves to step 5230 and executes the above-mentioned routine in the same way, but if there is no set-up pallet 19 on the shelf 24, nothing is executed and this routine is temporarily terminated. do.

As detailed above, according to this routine, the set-up pallet is carried into the following four machining centers.

(I> Machining center that is only designated (If) Machining center that is designated and fixed to the machine (III) Machining center that is only fixed to the machine (rV) Any vacant machining center After this, the l?Ms control device 70 follows other control routines. A machine program for machining the workpiece carried into the machining center is loaded into the machining center.The machining center automatically performs machining according to the loaded machine program.Next, after finishing machining at the machining center, the FMS $lI control device 70 The completed pallets are taken to DS for shipping, but
This operation will be explained according to the processed pallet unloading routine shown in FIG. 9(C).

The EMS $lIm device 70 performs machining (interfaces 5, 10 .
PM sensor 5f, 10f installed at setup position 15
, 15f to see if there is a processed pallet 19 (step 5500).

If a machined pallet 19 exists in either of the machining centers 5, 10.15, the machined pallet 19 is determined in accordance with a predetermined machining order.

After confirming the existence of the processed pallet 19, next I)M
LDS25,2 via sensors 25a, 28a, 33a
Check whether 8.33 is free (steps 5510, 5520).

After confirming that it is empty, the processed pallet 19
Palette No. stored from palette ID 19a of
Read the LDS of the corresponding <palette data>,
I? The value of HOV is searched and the LDS that can be exported is read (step 3530). In this embodiment, LDS25 is determined as the LDS that can be exported (corresponding to the value ■ of LDS and RHOV in FIG. 10). The unloading LDS can be specified for each pallet number in the same way as the setup LDS.
Various measures are possible depending on the workpiece.

The FMSib'1m device 70 determines whether the vacant I-DS and the transportable LDS 25 match (step 5540).

If they match, a command is issued to the stacker controller 37a to move the processed pallet 19 to the empty LDS2.
Step 5 is carried out, and this routine is temporarily terminated (Step 55).
50).

If they do not match, this routine is temporarily terminated without executing anything thereafter.

In step 5500, which machining centers 5, 1
If the processed pallet 19 does not exist at 0.15, it is determined whether or not the processed pallet 19 exists on the shelf 24 (step 5560). If it exists on the 1fl124, the process moves to step 5510 and the process described above is performed. The same processing as above is performed, but if there is no processed pallet 19 on the shelf 24, nothing is executed thereafter and this routine is temporarily ended.

Also, in step 5520, which LDS25.28.
When 33 is not empty, the processed pallet 19 is placed on shelf 2.
4 and placed on the shelf 24, and if it is placed on the shelf 24, it is left as is and this routine is temporarily terminated (step 5570).

Processed pallet 19 is 1. , DS 25, the operator removes the workpiece from the jig 18 on the pallet 19 and ships the workpiece.

By the way, the processed pallet 19 is the LDS25 for unloading.
．． 28. If the operator determines that it is better to measure the accuracy and rework the machine when it is placed on the loading station operation panel 25d, 28d, 33 or the shelf 24,
A command for reprocessing is output by pressing the key from 3d. Upon receiving the command, the FMS control device 70 changes the C0HH [reprocessed (SAIKAKO)
) record and display.

Such re-machining is also performed when a tap or drill breaks during machining at a machining center, or when the tool length cannot be corrected and there is a possibility that a good product could be obtained by machining it again.

When the operator outputs a command to start reprocessing from the keyboard 70f at an appropriate time based on the operating conditions, FMSll
The Ill device 70 executes the reprocessing routine by interrupt processing.

No. 12111 shows a flowchart of the rework processing routine.

As shown in the figure, the FMS control device 70 has RAM M7()
Part N whose rework is recorded from b
o is searched and it is determined whether the reworked special pallet 19 is stored in the fence 24 (step 5610).

If the reprocessing special pallet 19 is stored, search for the pallet status of the reprocessed special pallet 19 and select the CUT HCN.
The number of the machining center that performed the previous machining is read from the value of O (step 5620).

When the reworked special pallet 19 is not stored on the shelf 24, the number of the machining center that last processed the machine is read from the pallet 1D19a of the reworked special pallet 19 placed on the unloading LDS 25 (step 5625).
.

It is determined whether the machining center with the read number is vacant, and if it is vacant, it issues a command to the stacker controller 37a, starts the stutter crane 37, and reworks the machining center placed on the shelf 24 or the unloading LDS 25. In particular, the pallet 19 is carried into the machining center, the water interrupt routine is completed, and the process returns to the main routine. (
Steps 3630, 5640).

When the corresponding machining center is not vacant, the rework special pallet 19 placed in the LDS 25 for unloading
is stored on the shelf 24, and if the rework pallet 19 is placed on the shelf 24, the water interruption routine is left as is and the process returns to the main routine (step 56).
50).

In addition, when a plurality of pallets to be reprocessed are placed on the shelf 24, the order of reprocessing may be determined according to a predetermined priority order.

As described in detail above, according to the FMS of this embodiment, the machining centers 5, 10, 15 and the jig shelf 24 can be arranged in any configuration.

Pallet 19 at the loading station in the optimal position
It can be transported to Therefore, pallet setup work can be made significantly more efficient.

Note that, not limited to the FMS configuration of this embodiment, in the case of a configuration in which the shipping port and material station are predetermined for each workpiece, the loading station of the unloading light may be set according to each pallet on which the workpieces are loaded. It is more effective to assign separate assignments for installation and removal.

As detailed above, according to the machine tool equipment of the present invention,
Regardless of the configuration of processing machines, warehouses, and other equipment, pallets can be delivered to the optimal loading station, and the pallet setup work can be significantly streamlined.

For example, if a loading station is placed near the material stage and the shipping port, the pallet is sometimes carried out to the loading station near the material station when installing the workpiece, and the pallet is carried out to the loading station near the shipping port when removing the workpiece. By doing this, you can simplify your work. In other words, loading stations are assigned separately for loading and unloading a workpiece.

In particular, if the shipping port and material station are predetermined for each workpiece, the loading station for installation and removal can be assigned depending on the workpiece.
-There is a layer effect.

[Brief explanation of the drawing]

FIG. 1 is a claim correspondence diagram illustrating the configuration of the machine tool equipment of the present invention, FIG. 2 is a perspective view showing the overall configuration of the FMS of the embodiment, FIG. 3 is a block diagram showing the configuration of the M ring system, and FIG. Figure 4 is an explanatory diagram showing a PM sensor attached to a loading station, Figure 5 is an explanatory diagram showing a PM sensor attached to a machining center, No. 61'7 is an explanatory diagram showing a PM sensor attached to a stacker crane, Figure 7 is a diagram showing the schedule data display screen, and Figures 8 (A), (B), and (C) are respectively a setup pallet delivery routine to the DS, a machining center delivery routine, and a processed pallet delivery routine. Flowchart showing the routine, Fig. 9 is a diagram showing the display screen of pallet data, 1st O
The figure shows a pallet status display screen, and FIG. 11 is a flowchart showing a reprocessing processing routine. Ml...Pallet M2...Loading station

Claims (1)

[Claims] Loading stations are installed at a plurality of locations on the pallet to perform setup work related to jigs and workpieces,
A machine tool facility in which a conveying means carries out the pallet from equipment such as a processing machine or a warehouse to the loading station, comprising loading station allocation means for allocating the loading station to which the pallet is carried out for each pallet. Mechanical equipment.