JP3317508B2 - Lathe cell 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 lathe and a lathe cell provided with a transfer device for accommodating and automatically supplying jigs and works used by the lathe.

[0002]

2. Description of the Related Art There is known a lathe cell including a combined machining lathe, a storage device for jigs and works used by the combined machining lathe, and a device for transferring the jigs and works. In a lathe cell, by preparing a large number of spare jigs and tools used by the combined machining lathe, many types of workpieces can be produced by unmanned operation for a long time. As a type of the jig, for example, there is a chuck jaw mounted on a spindle chuck of a lathe, and as a tool, there is a cutting tool supplied to a tool post of the lathe. As the transfer device, for example, a gantry robot traveling on a guide rail is used. The hand to be attached to the robot arm end is a jig, tool,
Since a work or the like is handled, a hand corresponding to the purpose is prepared and exchanged as appropriate.

[0003]

The lathe cell requires a space because a lathe is provided with a storage device for a setup member such as a jig and a tool and a storage device for a work around the lathe. In particular, since the storage device for the setup member stores spare jigs and tools, if a large amount of jigs and tools are to be stored, the device becomes large and causes an increase in space. As the equipment becomes larger,
There is a disadvantage that the transport path of the members becomes longer and the production lead time becomes longer. SUMMARY OF THE INVENTION The present invention provides a device that has a chain-type magazine, accommodates a large amount of setup members such as jigs and tools in a compact manner, and has high magazine indexing accuracy.

[0004]

A lathe cell comprises a composite machining lathe, a work storage device and a setup member storage device disposed adjacent to the composite machining lathe, and a work between the composite machining lathe and the storage device. And a transfer device for transferring a setup member and the like. The setup member storage device has a base disposed in a direction perpendicular to the transport rail, and includes a stocker that runs linearly on the base. The stocker houses a hand that is exchangeably mounted on the arm of the transfer robot. On both sides of the base, two jig / tool storage devices are provided. The jig tool storage device has two chains that are run in parallel between a driving sprocket wheel and a driven sprocket wheel, and a tool magazine is provided between the two chains. A jaw magazine is formed on the side of one of the chains.

[0005]

The first jig / tool storage device is a first machining tool lathe.
Supply jaws and tools to the main spindle and the first tool post,
Supplies a jaw and a tool to the second spindle and the second tool rest.

[0006]

FIG. 1 is a plan view of a lathe cell according to the present invention, and FIG. 2 is a front view. The lathe cell generally denoted by reference numeral 1 includes a combined machining lathe 10, a work storage device 30, a setup member storage device 50, and a transfer device 20. The combined machining lathe 10 is, for example , of the type proposed by the present applicant and disclosed in Japanese Patent Publication No. 2-42602. The compound machining lathe disclosed in the above publication includes two main spindles arranged opposite to each other and a tool rest cooperating with each of the main spindles. The first spindle and the first turret cooperate with the first spindle.
Work of the first step is performed on the work held by the main spindle. The second spindle receives the workpiece, which has been processed in the first step, from the first spindle, and performs the second step on the workpiece in cooperation with the second tool post. All processing of the work is completed by a series of processing. Therefore, a work with a high degree of processing can be produced with high accuracy in a short time. Combined lathe 10
A work storage device generally denoted by reference numeral 30 and a setup member storage device denoted by reference numeral 50 are disposed on the side portions.

In the illustrated embodiment, the setup member storage device 50 is disposed on the side of the combined machining lathe 10, and the work storage device 30 is disposed outside the lathe. However, the setup member storage device 50 and the work storage device 30
May be separated from each other and disposed on both sides of the combined machining lathe 10. The setup member storage device 50 and the work storage device 30 can be disposed on either side of the combined machining lathe. At the upper part of the combined machining lathe 10, a transfer device 20 for connecting with the work storage device 30 is provided. The transfer device 20 includes a guide rail 200 and a guide rail 20.
The gantry robot 210 travels along an axis B, which is the zero longitudinal axis. Gantry robot 2
Reference numeral 10 denotes an arm 220 that moves up and down along an axis A that is a vertical direction, and a hand 250 provided at the tip of the arm 220.
Having. The hand 250 is of an exchangeable type, and various types of hands are prepared according to the work and the tool to be handled.
The structure and function of the transfer device 20 in the lathe cell are disclosed in Japanese Patent Application No. 2-273392 filed by the present applicant. The work storage device 30 includes a guide rail 200.
Has a base 300 disposed in a direction perpendicular to the base. A cart 310 is attached to the base 300 so as to be able to run freely. The carriage 310 includes a pallet loading station WS1 on which the work is loaded and a pallet loading station WS.
Reciprocating between the two.

Work pallet 35 on which work 360 is placed
0 is loaded into the loading station WS1 in a stacked state. The traveling vehicle 310 includes a fork device 320. The fork device 320 is supported movably in the vertical direction with respect to the traveling carriage 310. The arm of the fork device 320 grips the work pallet 350 from both sides. The work pallet 350 has a storage element and writes information on the placed work. The fork device 320 is a work pallet 3
A device for reading data from 50 storage elements is provided. When the stacked pallets are carried into the carry-in station WS <b> 1, the fork device 320 moves up and down along the stacked pallets 350, reads work information of each pallet, and sends the information to the controller 90. The controller 90 transmits a processing procedure or the like based on the information of the carried-in work to the transfer device 20.
And a command to the combined machining lathe 10. Traveling carriage 310 and the fork device 320 supplies carry pallets 350 carrying the workpiece to the set Rusa over bis position directly below the guide rail 200, the workpiece 360 corresponding in conjunction with gantry robot 210 to the combined machining lathe 10 I do. The work completed by the combined machining lathe 10 is returned to the work pallet 350. When all of the work of one pallet 350 is processed, the traveling carriage 310 and the fork device 32
0 indicates that the work pallet 350 is transferred to the unloading station W
Lower to S2. Thereafter, the pallet 350 on which the material work is placed is sequentially carried to the service position and the processing is continued.

The combined machining lathe 10 can machine workpieces of various shapes and sizes. It becomes necessary to change the jaws , tools, and the like of the chuck of the spindle according to the type of work. The lathe cell 1 of the present invention includes a device for accommodating a large number of setup members. The setup member storage device 50 includes a base 500 disposed in a direction orthogonal to the guide rail 200 of the transfer device 20. A rail 502 is provided on the base 500, and a stocker 510 is movably attached along the axis X5. The stocker 510 has a box shape with an open top, and the exchange hand 250 is stored in the stocker 510. The exchange hand 250 is exchangeably attached to the tip of the arm 220 of the gantry robot 210. The types of the hand 250 include a tool hand for handling a tool to be supplied to the tool rest of the combined machining lathe 10, a jaw hand for handling a jaw to be supplied to a chuck of a spindle of the combined machining lathe 10, and a work hand for handling a workpiece. As the work hand, there are a scroll chuck type hand for holding the end face of the work and a work hand for holding the outer periphery of the bar work. In the work hand of the scroll chuck type, it is necessary to replace the jaws of the hand according to the diameter of the work. Hand jaw set 2 stored on the flange surface of stocker 510
Reference numeral 60 is provided with a jaw set corresponding to the shape and dimension of the work, and is replaced with a work hand. On both sides of the base 500 of the setup member housing unit 50 jig tool storage device having a large capacity it is equipped.

FIG. 3 is a plan view of the jig / tool storage device.
Shows to the control shaft X5 in FIG. 1 on the vertical axis, FIG. 4 jigs yield
FIG . 5 is a right side view of the delivery device, and FIG . 5 is a front view similar to FIG.
FIG . The jig tool storage device 60 is disposed in parallel with 2
It has chains 630, 640 of books. The two chains 630, 640 are a pair of chain sprocket wheels 610, 620 attached to both ends of the base 500.
Be sent to First chain sprocket wheel 610 is a drive wheel and second chain sprocket wheel 620 is a driven wheel. The drive wheel 610 is controlled by a servo motor 612.
Service position SP for exchanging tools and jaws almost at the center of drive wheel 610 and driven wheel 620
Is set. A driven sprocket wheel 615 is provided below the service position SP, and the amount of rotation of the wheel 615 is detected by an encoder to position the chain. The diameter of the wheels 610, 620 has a large dimension and a large radius of curvature. Accordingly, the dimension of the overall height H of the jig / tool storage device 60 becomes large. Base 50
The two jig tool storage devices 60 provided on both sides of the base 500 have a target structure with the center line of the base 500 interposed therebetween.

FIG. 6 is a plan view showing a main part of the jig and tool storage device, and FIG. 7 is a front view similar to FIG . One chain 630 has a structure in which plates 632 are provided on both side surfaces of a link 631 and connected by pins 633. The other chain 640 has a similar structure. The tool holder 650 holding the tool has a board-like structure that connects the links of the left and right chains. A tool pocket 651 for inserting a tool 710 is provided at the center of the tool holder 650. The tool pocket 651 has a cylindrical structure into which the cylindrical shank 712 of the tool 710 is inserted. Serrations 713 are formed on the outer periphery of the tool shank 712. The tool holder 650 has a shaft 653 having a serration groove at the tip, and the shaft 653 is moved in the axial direction by a cam follower 655. Shaft 6
The serration at the tip of 53 is the tool shank 712
Of the engagement tool 710 is constituted by the serrations 713 of the first embodiment. An ID antenna 790 is installed at a predetermined position of the base 500, and the information of the tool written in the ID tag embedded in the tool holder 650 is read or written. A jaw holder 660 is attached to the side of the second chain 640 disposed inside. A jaw holder 660 is provided for each link of the chain. In this embodiment, 660 of 100 jaw holders are provided. Jaw holder 660
The jaw pocket 66 for inserting the jaw 720
One.

As described above, according to the present invention, the setup member storage device attached to the lathe is provided with the first and second jig tool storage devices. The first jig / tool storage device can store 50 tools and 100 jaws. The tool is supplied to the first tool post of the multitasking lathe. The jaws are fed to the chuck of the first spindle of the combined machining lathe. In general, a spindle chuck uses three jaws as one set. In this jig tool storage device, 100 jaws can be stored, but a total of 33 sets of 99 jaws are stored, and one jaw holder is empty. This empty jaw holder 665 can be used as the origin of a chain type tool storage device. In this device, since a large number of tools and jaws can be stored, the lathe cell can continuously produce many kinds of works by unmanning for a long time. The tool magazine and the jaw magazine that constitute the jig and tool storage device 60 of the present invention exchange tools and jaws in a service position set at the top of a circulating chain. Therefore, at the lower part of the chain, the tool and the jaw receive a downward force and a force in a direction of coming out of the tool pocket or the jaw pocket. Therefore, a mechanism for preventing the tool or jaw from slipping out of the pocket is required.

FIG. 8 is an explanatory view showing the operation of the jaw magazine and corresponds to the right side view of FIG . The movement of the jaw magazine indicated by reference numeral 70 is controlled in the forward direction P1 or the reverse direction P2. A service position SP for exchanging jaws is set at the upper center in the path of the jaw magazine 70. This service position S
At P, the jaw hand of the gantry robot performs an operation of pulling out a predetermined jaw 720 of the jaw magazine 70 from the magazine or returning the jaw to the magazine. Therefore, the retaining device provided with the jaw magazine 72 is unclamped near the service position SP so that the jaw can be pulled out of the pocket, and in other ranges, the jaw comes out of the pocket in a clamped state. To prevent. As a mechanism to operate the retaining device,
A first guide G1 is provided at the service position SP, and a first dog 11 and a second dog 12 are provided upstream and downstream of the guide G1. When the jaw magazine 70 moves in the forward direction P1, the guide G1 and the first dog D
11, an unclamping range UC1 is set. When the jaw magazine 70 moves in the reverse rotation direction P, the guide G1
An unclamping range UC2 is set between the second dog D12 and the second dog D12.

FIGS. 9, 10 and 11 show details of the jaw retaining device. The retaining device generally denoted by reference numeral 670 has a plate-shaped bracket 672 that is rotatably attached to the jaw pocket 661 by a pin 671. The upper end of the bracket 672 has a bent portion 67 inside.
3 are formed, and a cam follower 674 is attached to the lower end. The position of the center of gravity of the bracket 672 is set at a position where the bracket 672 naturally stands upright so that the clamped state is maintained when the jaw pocket is downward. Therefore, the bent portion 673 at the upper end of the bracket 672
Engages the shoulder 724 of the jaw 720 to prevent the jaw 720 from slipping out of the jaw pocket 661. FIG.
2 is a plan view of the guide G1 and the two dogs D11 and D12, as viewed from the arrow C in FIG. Guide G1
Is formed of a plate-shaped material 680 and has a cam groove 681. The cam groove 681 urges the cam follower 674 of the retaining device 670 in the direction of the arrow. FIG. 11 corresponds to FIG.
FIG. 13 is a view in the direction of the arrow, showing a state in which the retaining device 670 is rotated in the direction of the arrow, and the bent portion 673 is disengaged from the shoulder portion 724 of the jaw 720. In this state, the jaw 720 can be pulled out upward. When the cam follower 674 comes off the cam groove 681 of the guide G1 and is guided by the first dog D11, the retaining device 670 returns to the clamped state. The first dog D11 has a main body 685 of a plate material,
A mountain cam 686 is formed. Fall prevention device 67
When the cam follower 674 of 0 hits the cam ridge 686, the locking device 670 is forcibly returned to the clamped state by the cam action.

Since the jaw magazine of the present invention is provided with the fall prevention device as described above, the chain type jaw magazine can be freely swung in a vertical plane. Next, a tool drop prevention device will be described with reference to FIGS. The tool magazine pocket 651 has a cylindrical shape into which the shank 712 of the tool 710 is inserted. A shaft 653 is slidably attached to the tool pocket 651. A tool shank 71 is provided at the tip of the shaft 653.
Serration 654 engaging second serration 713
Is formed. This shaft 653 is a cam follower 65
5 is operated. The service position SP in the tool magazine is set near the service position SP in the jaw magazine. A guide G2 is provided at the service position SP, and a first dog D21 and a second dog D22 are provided upstream and downstream of the guide G2. The guide G2 has a main body 690 of a plate-like material, and cam ridges 691 are formed before and after the main body 690. The first dog D21 has a main body 695 of a plate material, and the main body 695 is
Having. The second dog D22 also has a similar body 697, which forms a cam ridge 698.

FIGS. 13 and 14 show the tool 710 clamped in the tool pocket 651. FIG. The shaft 653 abuts against the tool shank 712, and the serrations mesh with each other so that the tool 710 can be moved into the tool pocket 651.
To prevent it from falling. When the tool magazine approaches the service position SP, the cam mountain 691 of the guide G2
The cam follower 655 pulls the shaft 653 away from the tool shank 712. FIG. 15 and FIG. 16 show this state. Serration 654 of shaft 653
Can be disengaged from the serrations 713 of the tool shank 712 and the tool 710 can exit the tool pocket 651. When the cam follower 655 has passed the service position, the cam follower 655 of the first dog D21 is pressed toward the tool shank 712 by the cam ridge 696, and the serrations of the cam followers 655 mesh with each other to return to the clamped state. Therefore, the tool is prevented from falling even if the tool magazine moves downward. Since the tool magazine of the present invention is provided with the device for preventing the tool from falling as described above, the tool magazine on the chain can be freely moved in a vertical plane.

[0017]

As described above, according to the present invention, since the tool and the jaw accommodating device can be configured to have a large capacity, it is possible to continue unmanned machining for a long time by providing sufficient spare tools and spare shafts. it can. The combined machining lathe includes a first spindle and a first tool rest, and a second spindle and a second tool rest. A tool magazine for accommodating a tool and a jaw for accommodating a tool and a jaw to a first spindle and a first tool rest, and a tool and a jaw for supplying a jaw magazine to a second spindle and a second tool rest for the tool Since the tool magazine and the jaw magazine for storing the jigs are separately configured and independently controlled, the exchange time of the tool and the jaw can be shortened. The tool or jaw
The unclamped state is set only in the vicinity of the service position, and in the other range, the tool or the jaw is prevented from falling even when the storage device is in the downward position because the storage device is clamped in the storage device. Since the tool or jaw drop prevention device does not include any driving means, no power is required and the structure is simple. Therefore, there are few failures,
Also, it is easy to cope with a problem.

[Brief description of the drawings]

FIG. 1 is a plan view of a lathe cell embodying the present invention.

FIG. 2 is a front view.

FIG. 3 is a plan view of the jig and tool storage device, showing the control of FIG.
The figure which shows axis X5 as a vertical axis .

FIG. 4 is a right side view of FIG . 1 showing the tool storage device .

FIG. 5 is a front view similar to FIG . 2 ;

FIG. 6 is a plan view showing a main part of the tool storage device .

FIG. 7 is a front view similar to FIG . 2;

FIG. 8 is an explanatory view showing the operation of the jaw magazine ,
FIG. 2 is a diagram corresponding to the right side view of FIG. 1 .

9 is a part of FIG. 8 showing details of a jaw retaining device .
FIG .

FIG. 10 is a view taken in the direction of arrow A in FIG. 9;

FIG. 11 is a view taken in the direction of arrow B in FIG. 9;

FIG. 12 is a view taken in the direction of the arrow C in FIG. 9;

FIG. 13 is a sectional view of a tool magazine.

FIG. 14 is a sectional view taken along the line BB of FIG. 13;

FIG. 15 is a sectional view of a tool magazine.

16 is a sectional view taken along the line AA in FIG.

FIG. 17 is an explanatory view showing the operation of the tool fall prevention device.

[Explanation of symbols]

 Reference Signs List 1 lathe cell 10 combined machining lathe 20 transfer device 30 work storage device 50 setup member storage device 60 jig storage device 70 jaw magazine 72 tool magazine 630 first chain 640 second chain 651 tool pocket 653 shaft 655 cam follower 661 jaw Pocket 670 jaw fall prevention device 710 tool 720 jaw

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-252345 (JP, A) JP-A-61-103746 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23Q 3/155 B23B 15/00 B23B 31/39 B25J 15/04

Claims (7)

(57) [Claims] 1. A combined machining lathe, a work storage device for accommodating a work arranged adjacent to the combined machining lathe and a setup member storage device for accommodating a setup member, a combined machining lathe, a work storage device, and a setup member storage The setup member storage device in a lathe cell including a transfer device that transfers a work and a setup member to and from the device, wherein the setup member storage device is disposed in a direction orthogonal to a movement axis of the transfer device. A stocker that stores a base to be moved and a hand that is linearly movable on the top of the base and that is exchangeably mounted on the robot arm of the transfer device, and two jigs and tools mounted on both sides of the base Equipped with a storage device , the tool storage device is driven
Between sprocket wheel and driven sprocket wheel
The first and second chains passed in parallel
Tool magazine disposed between the first and second chains
And a jaw magazine arranged on the side of one of the chains
Setup member storage device of the lathe cell comprising comprises a. 2. A tool magazine for each pitch of the chain.
The tool pocket, which is a component of
2. The apparatus for accommodating a setup member of a lathe cell according to claim 1 , further comprising a jaw pocket as a constituent element . 3. A first and a second tool provided in a tool storage device.
The apparatus for accommodating a setup member of a lathe cell according to claim 1, wherein the chains are provided with independent drive control devices for the chains . 4. The tool magazine is used for shank of a tool.
Form in the tool pocket to be inserted and the shank of the tool
With a serration that meshes with the serration
And a cam follower that controls the shaft
2. The apparatus according to claim 1, further comprising a fall prevention device. 5. A tool storage device is set on a base.
Installed in service position for tool exchange
Guide and a dog disposed near the guide.
And the guide cam cooperates with the shaft cam follower.
Unclamp the tool and let the dog work with the cam follower.
Setup member storage device of the lathe cell according to claim 1, wherein for clamping the tool by the same. 6. The jaw magazine has a jaw for inserting a jaw.
It is mounted swingably in the pocket and has a
The curved surface that engages the shoulder of the
Jaw fall prevention device consisting of
2. The apparatus for accommodating a setup member of a lathe cell according to claim 1, wherein 7. The jig and tool storage device is set on a base.
Arranged in a service position to replace jaws
And a dog disposed near the guide,
The guide cam cooperates with the bracket cam follower
Uncle's clamps, Dog collaborates with Cam Follower
7. The apparatus for accommodating a setup member of a lathe cell according to claim 6, wherein the jaws are clamped .