JPS60197336A - Tool feeding device in machine tool processing system - Google Patents

Abstract

PURPOSE:To automatically and easily replace a tool with the desired tool, by holding the tool, mounted to tool holders of a transferred and positioned subtool magazine and a main tool magazine, to be transferred by a tool carrier and indexing the subtool magazine by its predetermined quantity so as to position its tool holder. CONSTITUTION:A machine tool 1 provides a main magazine 2, in which a large number of tool holders 201 are arranged, and a tool is supplied to a main spindle 101 by an arm 202 in the side of a main unit. An operatorless conveying truck, automatically running on a track and moving to a place in the vicinity of the machine tool 1, is positioned by a positioning pin. An indexing and positioning means 7 is set to a strut in the vicinity of the machine tool 1, indexing a submagazine 3, positioned in this setting, to be turned and positioning a tool holder 301. A tool carrier 4, reciprocating on a guide beam 5, interchanges tools in the sub and main magazines 3, 2, and an arm 8 holds the tool in the sub and main magazines 3, 2 to be fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tool magazine exchange system for a machine tool.

With the shift to FMa (flexible production system) for machine tools, tools, workpieces, pallets, etc. are transported by automatic guided vehicles and automatically replaced. The machine tool is a machine tool that is equipped with a tool magazine that holds a large number of tools, and is configured to automatically change the tools in the tool magazine using an automatic tool changer (hereinafter referred to as ATO). There is a limit to the number C2 of tools held in the tool magazine. Therefore, tools that are not kept in the tool magazine, such as identical tools (spare tools, etc.), special tools, tools that are rarely used, etc., were exchanged between the common tool storage and the tool storage. Although this was possible by combining peripheral equipment, it was not suitable for expanding the system from a combination of conventional machines.

The present invention has been made in view of the above circumstances, and its purpose is to provide a tool magazine exchange system for a machine tool that is advantageous for expanding the current FMO system to an FMS system. In particular, in order to deliver a general-purpose magazine, it is carried in by retracting and lifting from an unmanned cart, and the magazine drive source can be connected and positioned (there are two things).

Further, the present invention provides a machine tool tool magazine changing device that can easily change a desired tool automatically, can flexibly correspond to the arrangement of machine tools in a production processing line, and has a compact structure. To achieve this object, the present invention: 2. A machine tool of a production and processing line that has an automatic guided vehicle and is previously installed in a transport line, and a main tool installed in the machine tool. a magazine, a sub-tool magazine that is mounted on the automatic guided vehicle and holds tools by arranging a large number of tool holders wound around a support base, and between the automatic guided vehicle and the main tool magazine. a fixed stand installed upright and provided to transfer the sub-tool magazine; a sub-tool magazine moving means provided on the fixed stand for transferring and positioning the sub-tool magazine; A guide beam (C) installed across the sub-tool magazine and the main tool magazine moves under the guide beam C and grasps and transfers the tools of the sub-tool magazine or the tools of the main tool magazine. A tool magazine exchange system for a machine tool, which comprises a tool carrier having an arm that rotates, and an indexing and positioning means that indexes and positions a tool holder of the sub tool magazine by a predetermined amount provided on the fixed base and positioned for transfer. It costs money.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 and FIG. 2 show an outline of the construction of the original intention line to which this embodiment is applied.

In Figure 1, machine tool 1 has a main tool magazine (
(hereinafter referred to as main magazine) 2 and processing table 1
3 are integrally provided. There is a sub tool magazine (hereinafter referred to as sub magazine) 3α on the automatic guided vehicle lc.
, 3b.

3C, a workpiece 11, etc. are mounted, and the vehicle automatically travels on a track 12 according to commands from a control means (not shown).

A guide beam 5 is provided above between the main magazine 2 and the track 12. The guide beam 5 is arranged at a location where it does not interfere with the machine tool 1. A tool carrier 4 is slidably held on the guide beam 5.

Sub-magazines 3a and 3b on the automatic guided vehicle 10.

3G is appropriately positioned near the guide beam 5Q as shown in the figure by a magazine moving means to be described later.

With the above configuration, the sub magazines 3α, 3b.

The tool is transported to the tool holder 2 and inserted into the tool holder. Conversely, unnecessary tools in the non-magazine 2 are returned to the sub-magazine 3α etc. by the tool carrier 4, and then returned to the automatic guided vehicle lc side.

On the other hand, the workpiece 11 is automatically supplied to the processing table 13 from the automatic guided vehicle 10C.

Figure 2 shows multiple machine tools 1α, 16. sub magazines 3α, 3b from the automatic guided vehicle 10 to lc, etc.

3G, etc., and moves on the guide beam 5 (the line is configured to automatically change the tool from the second position, and the individual configurations are as shown in Fig. 1). .

FIG. 3, FIG. 4, and FIG. 5 show an outline of each component of this embodiment.

As shown in FIG. 4, the machine tool 1 is provided with a main magazine 2 in which a large number of tools are arranged, a tool holder 201 for holding tools, and a control means (not shown) that operates as a main body side arm (ATO) 202.

Further, a processing table 13 is integrally provided, and the workpiece 11 from the automatic guided vehicle 10 is supplied via an auxiliary table 14 (shown in FIG. 5 (2)).

The automatic guided vehicle 10 automatically travels on the track 12, moves to the vicinity of the machine tool 1, and is positioned as shown in FIG. For positioning, the foot end 1001 of the automatic guided vehicle 10 is
This is done by engaging a positioning bin 1002 installed on the floor with a cylinder (not shown). Therefore, the foot end 1001 moves up and down and is in an upper position and does not engage with the positioning pin 1002 while the automatic guided vehicle 10 is traveling automatically.

A sub-magazine 3 is mounted on the upper C2 of the automatic guided vehicle 10, and the sub-magazine 3 is moved up and down by the operation of a lifting device 11003.

As shown in FIG. 4, the sub-magazine 3 is provided with a large number of tool holders 301 for holding tools, which are held on a support stand 302.

The index positioning means 7 is installed on a support 15 (FIG. 3) installed near the machine tool/machine 1, and indexes and rotates the sub-magazine 3 positioned at the installation position and the tool holder 3.
Perform positioning of 01.

The guide beam 5 is disposed on the upper side of the support column 15 and straddles the main magazine 2 and the vicinity of the track 12 of the automatic guided vehicle 10.

After the submagazine 3 on the automatic guided vehicle 10 is delivered by the magazine moving means 6, it is moved upward and positioned near the guide beam 5.

The tool carrier 4 is slidably supported by the guide beam 5 and reciprocates, and operates to mutually exchange tools in the submagazine 3 and the main magazine 2. Further, the arm 8 is rotatably held by the tool carrier 4 and engages with a tool in the sub-gathering magazine 3 positioned near the guide beam 5.
Hold this completely and secure it. Similarly, it also engages with the tool in the nose magazine 2 and grips and fixes it.

Next, the sub magazine 3 will be explained in detail.

Fig. 6 is a front view of the same, Fig. 7 is a sectional view taken along the line ■-■ in Fig. 6, Fig. 8 is a plan view taken along the ■ arrow in Fig. 7, and Fig. 9 is a l of Fig. 8.
X-1) (Cross-sectional view taken along the line, FIG. 10 is a cross-sectional view taken along the line X-X in FIG. 6.

The support base 302 is formed in a tombstone shape, and a positioning portion 303 is formed on the lower surface side, into which a positioning pin 602 of a holder 601 of an index positioning means 6, which will be described later, is fitted. In addition, as shown in the 16th factor, there is a positioning part 319 on the upper side.
is formed and fits into the positioning pin 506 (FIG. 3) of the guide beam 5. Sprocket wheels 304 and 305 are pivotally attached to the support base 302, and a chain 306 is wound between the sprocket wheels 304 and 305. The top of the chain 306 is connected to a tool holder 301 that holds a tool.
are arranged in large numbers.

As shown in FIG. 7, a wheel shaft 307 is key-coupled to the sprocket wheel 304, and the wheel shaft 307 is rotatably supported by a support base 302C via a bearing 308. -2-?
-hm) Ojiku Δ every beat ＾/f 81 4 days 309 is formed. 8 and 9 (as shown in FIG. 2, the lever 311 for operating the positioning pin 310 is mounted near the outer edge of the wheel shaft 307 as a bracket) 3121: Pivotally supported. Bracket 312 is fixed to support base 302.

The positioning bin 310 is a holder 3 fixed to the support base 302.
One end (C) is supported slidably in a biased state by a spring 310α in the spring 310α, and one end of the lever 311 is engaged with the other end, and the other end protrudes toward the sprocket wheel 304, and the sprocket wheel They are positioned opposite to eight equally spaced index holes 314 formed in 304 and engage removably.

As shown in FIG. 10, the sprocket wheel 305 is supported via a bearing 316 by a wheel shaft 315 fixed at one end of the support base 302, and is formed into a sprocket shape having the same shape as the wheel shaft 304. As shown in the figure, a dog 317 is provided at the lower left of the support stand 302 in the drawing to engage with a limit switch 604 attached to the guide rail 603 of the magazine 9 moving means 6, and the tool holder 301 is provided with a dog 317 that engages with the limit switch 604 attached to the guide rail 603 of the magazine 9 moving means 6. The attached proximity switch 501 is engaged.Also, the arm 8 is engaged with a tool inserted into the tool holder 301 at a predetermined position A, as shown by the two-dot chain line.

Next, the index positioning means 7 will be explained.

Figure 11 shows its axial cross section, and Figure 12 shows the
13 is a rear view as viewed from the arrows, and FIG. 13 is a front view as viewed from the XI arrow in FIG. 11.

As shown in FIG. 11, an index motor 702 is attached to the support column 15C, and a gear 703 is fixed to the shaft end of the index motor 702.

A cylinder case 715 having a cylinder hole therein is fitted into the column 15, and a piston 704α having a piston door 04 is slidably inserted into the cylinder hole. Holes 705 and 706 communicating with the cylinder hole are formed at the front and rear positions of the piston '704α, and these communicate with a pressure source (not shown). A gear 707 is rotatably supported at one end of the piston door 04. Since the gear 707 is attached to the piston rod door 04 with its axial position restricted, the piston rod 704
The gear 707 moves following the stroke movement. Furthermore, a clutch pawl portion 70 is provided on one side of the gear 704 in the moving direction.
8 are formed, and the clutch pawl portion 708 fits into one of the eight equally distributed clutch groove portions 309 of the sprocket wheel 304 of the sub-magazine 3.

Furthermore, since the gear 707 meshes with the gear 703, it is rotated via the gear 703 by the rotational drive of the index motor 702.

One end of a connecting plate 709 is fixed to the other end of the piston rod 704, and a limit switch 710 is fixed to the other end.
, 711 is attached so as to be adjustable. Also, a push rod 7 is provided near the middle of the connecting plate 709.
13 is attached to one end, and a bolt 714 that abuts the other end of the lever 311 is attached to the other end of the push rod 713 so as to be adjustable. Further, as shown in FIG. 12, the index motor 702 is provided with a limit switch 715 for confirming insertion of the positioning pin 310 (FIG. 9).

With the above structure, Piston Rondo 04? When moved forward, the gear 707 and the push rod 713 move forward, and the clutch pawl 708 is engaged and connected to the clutch groove 309 of the wheel shaft 307, and at the same time the positioning pin 3 on the support stand 302 side is moved forward.
10 is removed from the index hole 314, and the sprocket wheel 304 can be rotated and indexed. Here, since the clutch claw part 08 is held in a fixed position, the clutch groove part 30
9. Subsequently, when the index motor 702 is rotated by a predetermined amount, the gear 707 is rotated, and the sprocket wheel 304 is rotated by a predetermined pitch. Next, by retracting the piston rod 704 and returning it to its original position, the sprocket wheel 30
Insert the positioning pin 11〇6i in the index hole 314 of 4.
The old 1 He Ching Telephone Completion 11 Declaration-Xuan 11 Output 1 positioning is completed. Therefore, the tool holder 301 is positioned by the predetermined amount [tA shown in FIG. 6], and these operations are detected and controlled by limit switches 710, 711 and 715.

Next, two guide beams 5C will be explained.

FIG. 14 is an enlarged sectional view of the xiy-sebaceous gland in FIG. 3.

As shown in FIG. 3, the guide beam 5 is supported by a column 15, and the main magazine 2 and the automatic guided vehicle 10 are connected to each other as described above.
The track 12 of the guide beam 5, more precisely, the position I near where the sub-magazine 3 is positioned, is straddled, has an angular hollow body cross section as shown in FIG. Guides 503 and 504 supporting the tombstone 401 of the tool carrier 4, which will be described later, are attached, and ranks 505 are provided along the longitudinal direction. Also the third
As shown in the figure, a positioning pin 506 for positioning the upper end of the support base 302 is provided on the lower surface.

Next, the magazine moving means 6 will be explained.

15 is an enlarged plan view taken along the line XV-XV in FIG. 4, FIG. 16 is an enlarged sectional view taken along the line XVI-XVI in FIG. FIG. 18 is a sectional view taken along the xvm-shoulder line in FIG. 17.

As shown in FIGS. 3 and 4, a frame 17 is fixedly mounted on a fixed base 16 that supports the support column 15. As shown in FIGS. As shown in FIG. 15, guide rails 603 are placed on the fixed base 16 at appropriate intervals at all levels.

As shown in FIG. 18, a plurality of rollers 605 and 606 are disposed on the guide rail 603 so as to be freely rotatable in the longitudinal direction, and the support rail 607 is guided by the rollers 605 and 606 and moves in the longitudinal direction of the guide rail 603. freely supported.

A rank 608 is provided on the lower surface C2 of the support rail 607 in the longitudinal direction thereof. , and support rail 607
As shown in FIG. 17, the roller 7 roller 609 pivotally supported by the support base 16 comes into contact with the lower surface of the roller 7 to guide and support it. Also, as shown in FIG. 3, on the support rail 607 there is a positioning pin 6-10 that fits into a positioning hole 318 (FIG. 18) formed on the lower surface of the support stand 302 of the sub-magazine 3.
will be permanently installed. As shown in FIG. 15, the stopper 61
1,612 and dog 613°614.615,61
6 are fixed respectively. The stoppers 611 and 612 are in the fixed position of the guide rail 603 (e.
, 614° 615. 616 are limit switches 618, 619, 620; 6'21 installed on the fixed base 16 side.
(Fig. 15, Fig. 17), detects fast forwarding, deceleration, and stopping of the support rail 607, and generates a control sound.

Next, the drive mechanism of the support rail 607 will be explained with reference to FIG. 18.

The rear side surface C2 of the guide rail 603 is a hydraulic motor 62
2 is attached, and a pinion gear 623 is keyed to the hydraulic motor shaft 622α.

This pinion gear 623 is connected to the rack 6 of the support rail 607.
It meshes with 08. Also, the attached guide rail 60
A drive shaft 624 extends between the two guide rails 603 and is rotatably supported by the other guide rail 603 via a bearing 625, and a pinion gear 623 that meshes with the rack 608 is inserted by key connection.

Therefore, when the hydraulic motor 622 is rotated, the two pinion gears 623 are simultaneously rotated directly and via the drive shaft 624, and the support rail 607 is moved by the rack 608 that meshes with the pinion gear 623.

As shown in FIG. 16, two guide shafts 626 are erected on the frame 17 of the fixed base 16, and the upper ends of the guide shafts 626 are supported by the pillars 15, although not clearly shown in the figure. The pedestal 601 is slidably supported on the guide shaft 626 .

The pedestal 601 is formed in an L-shape, and the piston rod 28 of the cylinder 627 fixed to the frame 17 is attached to the lower surface side of the member perpendicular to the sliding portion. Note that the cylinder 627 and piston shown in FIG. 16 are placed therein.

Also, on the upper surface side of the pedestal 601 there is a positioning bin 6 as described above.
02'' is provided and fits into the positioning part 303 of the support base 302.

With the above configuration, by operating the cylinder 627, the paper holder 601 is moved up and down by the guide shaft 626, and the holder 601 is raised and lowered by moving the cylinder 627.
The support stand 302, that is, the sub-magazine 3 mounted on the 01 is raised and lowered.

Next, the tool carrier 4 will be explained.

As shown in FIG. 14, the tombstone 401 is attached to the guide beam 5.
It is slidably supported by guides 503 and 504 of.

A servo motor 402 (FIG. 3) is mounted on the tombstone 401. The rotation of the servo motor 402 is transmitted to a shaft 403, and a pinion gear 404 that meshes with a rack 505 is keyed to the shaft 403.

The pinion gear 404 is rotatably supported by a bracket 405 fixed to the tombstone 401 via a bearing 406.

A holder 408 supported by a stopper pin 4071 whose one end abuts against the stopper bracket 801 of the arm 8 is attached to the lower end side, a roller 409 is pivotally supported at the other end of the stopper pin 407, and the row 2409 is connected to the guide beam 5. It comes into contact with and is guided by a guide member 507 fixed to the lower end of.

From C2 above, when the servo motor 402 is rotated, the tombstone 4 is rotated due to the engagement between the pinion gear 404 and the rack 505.
01 moves a predetermined amount along the guide beam 5ζ2.

Next, arm 8 will be explained.

As shown in FIG. 20, one end of the arm 8 is arranged to engage and grip the tool 18 in the tool holder 301 at the predetermined amount of 1 tA shown in FIG. 1st
As shown in FIG. 9, the key 802t is fixed to the arm shaft 803 through the key 802t. Arm shaft 803 is rotatably supported by bracket 806 via bearings 804 and 805. bearing 80
A spacer 807 is interposed between 4 and 805 to restrict movement of the arm shaft in the axial direction. The placket 806 is fixed to the tombstone 401 side of the tool carrier 4. The motor shaft of an oil motor 810 is key-coupled to one end of the arm shaft 803, and the oil motor 810 is connected to the shaft 80.
It is fixed at 6.

As shown in FIG. 19, a torsion coil spring 812 whose one end is held by a member 811 is wound around the outer circumferential side of the arm shaft 803, and the other end of the torsion coil spring 812 is wound around the arm 803.
It is in contact with a cylindrical member 813 that is fixed to the cylindrical member 813. This spring 8
12 elastically applies a reaction force to the arm 8 by means of a cylindrical member 813 when the arm 8 rotates toward the tool holder 301 side.

A stopper bracket 801 is fixed to the side surface of the arm 8 located on the rotational circumference on the outer peripheral side of the master arm shaft 803, and contacts the stopper pin 407 as described above to limit the rotation angle.

A retaining member 81, 7 that fits into the shank m19 of the tool 18 is fixed to one end side of the arm 8 that grips the tool 18, and a fixing piece 814 that fits into the notch 20 formed in the shank #19. is provided.

At a position facing the fixed piece 814, a gripping claw 816 is provided which swings about a pin 815 and comes into contact with the outer periphery of the shank.

Note that a spring 818 that urges the entire fixed piece 814 toward the notch 20 is in contact with the fixed piece 814 so that its spring force can be adjusted freely. One end of a push rod 819 is in contact with the gripping claw 816, and the other end of the push rod is in contact with one end of a piston rod 820 (FIG. 20) provided within the cylindrical member 813.

The push rod 819 is supported within the wall thickness of the arm 8 and is supported so as to be able to slide within the arm 8 while being guided by a guide screw 821.
It is biased in a direction to come into pressure contact with 16. Cylindrical member 813
A cylinder chamber 823 is formed inside the cylinder chamber 823.
A piston 824 formed at the other end of the piston rod 820 is inserted therein. A cylindrical portion is also formed and connected to a pressure source. A hole 827 is provided near one end of the piston rod 820 and is formed with an inclination that slides into contact with an inclined part 828 formed at the other end of the push rod 819 .

Further, a rotation stopper pin 829 is engaged with the piston 824 . A spring 826 is interposed between the stepped portion of the piston rod 820 and the side surface of the arm 8, and urges the piston rod 820 toward the left C2 in FIG. Therefore, the cylinder chamber 8
When pressure medium is supplied into 23, the piston rod p 2
0 moves against the spring 826, and the other end of the push rod 819 is fitted into the hole 827. Therefore, when the arm 8 grips a tool, the grip claw 816 can swing with a certain biasing force. Conversely, when the pressure medium is not supplied into the cylinder chamber 823, the gripping claw 816 is in a locked state because the inclined surface 820α slides onto the inclined surface 828 and rides on it. Therefore, as shown in FIG. 19, the arm 8 engages the tool 18 indicated by the two-dot chain line when the oil motor 810 turns 2, swings the gripping claw 816, and then, by the action of the spring 826 of the piston 824. The gripping claw 816'fr grips and fixes.

Although not clearly shown in the drawings, the tools in the main magazine 2 are also positioned at the same position ζ2 facing the predetermined position A, so that they are similarly gripped and fixed by the arm 8 when exchanging tools.

Next I: The operation of this embodiment will be explained.

As shown in FIG. 3, the sub-magazine 3 supported by the support stand 302 is first mounted on the automatic guided vehicle 1o, and is transported by the track 12 to the vicinity of the designated machine tool 1, and the foot end 1001 is attached to the positioning pin 1002. is inserted and positioned. The support platform 302 is lifted by the lifting device 11003, and a support rail 607 that is transferred by a hydraulic motor 622 is inserted into the lower side of the support platform 302.
2, the positioning pin 610 is fitted into the positioning hole 318. As a result, the support stand 302 is positioned and supported on the support rail 607. Support rail 6
07 is moved backward as described above (FIGS. 15 and 17), the dog 614 contacts the limit switch 619 and decelerates, and further the dog 613 contacts the limit switch 618 and stops. At this time, the stopper 611 hits the stopper 617 to accurately position and stop. The support stand i02 that retreated during the operation is placed on the pedestal 601, and the sixth
As shown in the figure and FIG. 16, the positioning pin 602 of the pedestal 601 is inserted into the positioning member 303 and positioned. Note that the engagement positional relationship between the support base 302 and the pedestal 601 is confirmed by the dog 317 and the limit switch 604 (FIG. 6). Next, when the piston rod 28 connected to the pedestal 601 is raised, the support 302 is guided by the guide shaft 626 and raised as shown in FIGS. 3, 4, and 16, and the positioning member 319 ( (Fig. 16) is fitted into the positioning pin 506 of the guide beam 5, stopped, and positioned. Next C: Piston Rondo 0 as shown in Figure 11
4 operates to open the index hole 3 of the sprocket wheel 304.
After releasing the positioning pin 310 from 14, the index motor 702 rotates, and the rotation of the clutch pawl 708 rotates the connected clutch groove 309, and the tool holder 301 of the sub magazine 3 indexes and rotates. The tool holder 301 with the desired tool 18 is indexed to a predetermined position [A], and the positioning pin 310 (FIG. 9) is inserted into the index hole 314 (FIG. 6) 82 of the sprocket wheel 304 and positioned. Ru. Next, the servo motor 402 (Fig. 14) rotates, the tool carrier 4 moves and is positioned near the predetermined position #h of the arm 8't-sub magazine 3, and the oil motor 810 (Fig. 820) rotates fully. , 19th
The tool 18 is gripped by the arm 8 as shown in FIG.

Next, operate the servo motor 402, pull out the tool 18 from the tool holder 301, rotate the arm 8 to an upper position where it does not interfere, move it in that state, and transfer the tool 18 to the non magazine 2 side, The tool 18 is inserted into the tool holder 201 of the main magazine 2, and the arm 8 is released from the tool 18.

Next, the unnecessary tools stored in the tool holder 201 of the main magazine 2 are gripped by the arm 8 in the same manner as described above, the tool carrier 4 is reversely operated, and the unnecessary tools are stored in the sub-magazine 3. As described above, the tools in the sub-magazine 3 and the tools in the non-magazine 2 can be exchanged as appropriate.

As a method for exchanging tools between the main magazine 2 and the sub-magazine 3, for example, a patent application filed by the present applicant entitled ``Tool call-up method for an automatic tool changer'' (Japanese Patent Application No. 5
9-6114) can be used.

As described above, according to this embodiment, the following effects can be achieved.

■ As shown in Figure 1, all types of tools are stored in the non-magazine 2 using the automatic guided vehicle 10 as needed.
By conveying to the side.

It is possible to diversify the processing, that is, expand the processing, and the fA is small.

In addition, it can automatically and quickly respond to tools, breakage, wear, etc. Furthermore, by timely supplying the sub-magazine 3α, etc., the main magazine 2 can be made of the minimum required amount of silver. In addition, as shown in Figure 2, multiple machine tools 1α etc. have non-magazine 2α etc. and sub-magazine 3α etc.
By responding appropriately and in a timely manner, the efficiency of FMS application can be improved.

■ Sub-magazine 3 does not have its own drive source, is small,
It can be formed compactly and relatively easily (
=, and can be manufactured and prepared at low cost.

■ Since the guide beam 5 is arranged in a straight line, it can be installed at a desired location relatively easily, and the magazine moving means 6
Since it has a simple structure that can be easily engaged and tightened with the guide beam 5, expansion and modification of the device can be easily performed.

■ Since the automatic guided vehicle 10 is configured to be able to transport not only the sub-magazine 3 but also pallets, workpieces, etc., it is possible to simplify the transport line.
The indexing of the sub-magazine 3 by the engagement connection by the positioning pin 310 and the positioning of the sub-magazine 3 by the positioning pin 310 are performed at the same time, allowing quick indexing and positioning.

■ It is a system in which tools in the main magazine and tools in the sub-magazine are mutually exchanged on the arm of a tool carrier that moves linearly, and the configuration is independent of tool exchange between the main spindle and main magazine, so tools corresponding to the workpiece can be exchanged. This allows for timely and flexible handling of all aspects such as editing and supplying tools in emergencies.

As is clear from the above description, according to the present invention, it is possible to automatically and easily IK a desired tool, and it is also possible to flexibly adapt to the installation arrangement of machine tools on a production processing line. It has a tremendous effect.

[Brief explanation of drawings]

Figures 1 and 2 are block diagrams showing the overall line configuration of a machine tool using an embodiment of the present invention, Figure 3 is a side view of the embodiment, and Figure 4 is a front view in the direction of the ■ arrow in Figure 3. Figure 5 is a plan view of Figure 4, Figure 6 is a front view of the sub-magazine of the embodiment, Figure 7 is a sectional view taken along the line ■-v■ of Figure 6, and Figure 8 is a view of Figure 7. V
9 is a sectional view taken along line IX-IX in FIG. 8,
10 is a sectional view taken along the line X-X in FIG. 6, FIG. 11 is an axial sectional view of the index positioning means of the embodiment, FIG. 12 is a rear view taken along the xi-xn arrow in FIG. 11, and FIG. 13 11 is a front view taken along the arrow ■ in FIG. 11, FIG. 14 is an enlarged sectional view taken along the line -■ in FIG. 3, FIG. 15 is an enlarged sectional view taken along the line XV-XV in FIG. 17 is an enlarged cross-sectional view taken along the line XVI-XVI of FIG. 15, and FIG. 18 is an enlarged side view of FIG.
20 is a partially sectional front view taken along the line -XVI, and FIG. 20 is a sectional view taken along the barbeon line in FIG. 19. 1.1α, 1b, IC...machine tool, 2.2α, 26
．． 2c...Main tool magazine 3.3α, 36.3G
...Sub tool magazine, 4...Tool carrier, 5
...Guide beam, 6...Magazine moving means, 7
... index positioning means, 8 ... arm, 10
...Automated guided vehicle, 11... Work, 12... Track, 15... Support column, 16... Fixed stand, 18...
Tool, 301... Tool holder, 302... Support stand, 304, 305... Sprocket wheel, 3
06...Chain, 309...Clutch groove, 3
10... Positioning pin, 311... Lever, 314
... index hole, 401 ... tombstone rail, 402
...Servo motor, 503.504...Guide,
505...Rack, 601...Case, 607...
・Support rail, 608... Rack, 622... Hydraulic motor, 627... Cylinder, 702... Index rod, 707... Gear, 708... Clutch pawl portion Fig. 1 C Second factor

Claims (1)

[Claims] In a machine tool of a production processing line that has an automatic guided vehicle and is arranged along a conveyance line, a main tool magazine installed in the machine tool, and a main tool magazine installed in the automatic guided vehicle,
A sub-tool magazine that holds tools by disposing a large number of tool holders wound around a support stand, and a sub-tool magazine that is installed between the automatic guided vehicle and the main tool magazine to transfer the sub-tool magazine. between a fixed base provided, a sub tool magazine moving means provided on the fixed base for transferring and positioning the sub tool magazine, and the sub tool magazine transferred and positioned on the fixed base and the main tool magazine; A guide beam is constructed across the guide beam, and the sub-tool is moved along the guide beam and grasps a tool in the front 8-pin sub-tool magazine or a tool in the main tool magazine, and is provided on a transfer footrest to determine the transfer position. A tool magazine exchange system for a machine tool, which comprises an indexing and positioning means for indexing and positioning a tool holder in a magazine by a predetermined amount.