JPH04354639A - Member storage device for lathe cell - Google Patents

Abstract

PURPOSE:To increase the capacity of a jig on tool storage device provided on a lathe cell and make the device compact. CONSTITUTION:A lathe cell 1 has a composite machining lathe 10, a work storage device 30 and a jig on tool storage device 50. The composite machining lathe 10 has two mating spindles and two tool rests cooperated with the spindles. The storage device 50 has a stocker 510 linearly moved on a base 500, and an exchange hand 510 and an exchange jaw set 260 for a work hand are stored in the stocker 510. Two tool storage devices 60 are fitted at both side sections of the base 500. The tool storage device 60 has a tool pocket and a jaw pocket on parallel chains, and it has the capacity to store 50 tools and 100 jaws.

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 equipped with a conveyance device for storing and automatically feeding jigs and workpieces used by the lathe.

0002

2. Description of the Related Art A lathe cell is known which includes a multi-tasking lathe, a storage device for jigs and workpieces used by the multi-tasking lathe, and a device for transporting the jigs and tools and workpieces. In the lathe cell, by preparing a large amount of spare jigs and tools used by the multi-tasking lathe, it is possible to unmannedly produce a wide variety of workpieces over a long period of time. Examples of the types of jigs include chuck jaws that are attached to the spindle chuck of a lathe, and examples of tools include cutting tools that are supplied to the tool rest of the lathe. As the transport device, for example, a gantry robot that runs on a guide rail is used. The hand attached to the end of the robot's arm is used to hold jigs, tools,
Since you will be handling workpieces, etc., prepare hands appropriate for the purpose and replace them as appropriate.

0003

A lathe cell requires space because it is constructed by disposing a storage device for setup members such as jigs and tools and a storage device for workpieces around the lathe. In particular, the storage device for setup members stores spare jigs and tools, so if a large amount of jigs and tools are to be stored, the device will become larger and the space will increase. As the equipment becomes larger,
This results in disadvantages such as the transportation route for the parts becoming longer and the production lead time also becoming longer. The present invention provides an apparatus that is equipped with a chain-type magazine, compactly stores a large amount of setup members such as jigs, and has high magazine indexing accuracy.

0004

[Means for Solving the Problems] A lathe cell is a lathe cell that provides a lathe for combined machining, a workpiece storage device and a setup member storage device that are arranged adjacent to the lathe for combined machining, and a lathe for workpieces between the lathe for combined machining and the storage device. It is equipped with a conveyance device that conveys setup materials, etc. The setup member storage device has a base disposed in a direction perpendicular to the transport rail, and includes a stocker that linearly runs on the base. The stocker stores a hand that is replaceably attached to the arm of a transporting robot. Two jig storage devices are installed on both sides of the base. The tool storage device has two chains running 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 chain.

[0005]

[Operation] The first jig and tool storage device is the first tool storage device of the compound machining lathe.
The jaws and tools are supplied to the main shaft and the first tool rest, and the second
The jig and tool storage device supplies jaws and tools to the second spindle and the second tool rest.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view of a lathe cell according to the present invention, and FIG. 2 is a front view thereof. The lathe cell, designated as a whole by reference numeral 1, includes a composite processing lathe 10, a work storage device 50, a setup member storage device 30, and a conveyance device 20. The compound machining lathe 10 is, for example, of the type proposed in the present application and disclosed in Japanese Patent Publication No. 2-42602. This type of compound machining lathe is equipped with two main spindles arranged opposite to each other and a tool rest that cooperates with each main spindle. 1st
The main spindle and the first tool rest cooperate to perform the first process on the workpiece gripped by the first main spindle. The second spindle receives the workpiece that has been processed in the first step from the first spindle, and cooperates with the second tool post to process the workpiece in the second step. All machining of the workpiece is completed through a series of machining operations. Therefore, highly processed workpieces can be produced in a short time and with high precision. A workpiece storage device, generally indicated by the reference numeral 30, and a setup member storage device, indicated by the reference numeral 50, are disposed on the side of the compound machining lathe 10.

In the illustrated embodiment, the setup member storage device 50 is disposed on the side of the compound machining lathe 10, and the workpiece storage device 30 is disposed on the outside thereof. However, this setup member storage device 50 and workpiece storage device 30
They may be separated and placed on both sides of the combined machining lathe 10. Further, the setup member storage device 50 and the workpiece storage device 30 can be disposed on either side of the compound machining lathe. A conveyance device 20 is provided at the top of the multi-tasking lathe 10 to connect it to a workpiece storage device 30. The transport device 20 includes a guide rail 200 and a guide rail 20
A gantry robot 210 is provided that runs along an axis B, which is the longitudinal axis of the robot. Gantry robot 2
Reference numeral 10 indicates an arm 220 that moves up and down along an axis A that is a vertical direction, and a hand 250 that is installed at the tip of the arm 220.
has. The hand 250 is replaceable, and various types of hands are available depending on the workpieces and jigs to be handled. The structure and function of the conveying device 20 in the lathe cell are disclosed in Japanese Patent Application No. 2-2733925 filed by the present applicant. The work storage device 30 includes a guide rail 200
It has a base 300 disposed in a direction perpendicular to . A trolley 310 is attached to the base 300 in a movable manner. The trolley 310 is a loading station WS1 for pallets loaded with workpieces, and a station WS2 for loading pallets.
It moves back and forth between.

[0008] Work pallet 35 carrying work 360
0 are carried into the carry-in station WS1 in a stacked state. The traveling truck 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 arms of the fork device 320 grip the work pallet 350 from both sides. The work pallet 350 is provided with a memory element, and information about the placed work is written therein. The fork device 320 is a work pallet 35
A device for reading data from a 0 storage element is provided. When the stacked pallets are delivered to the delivery station WS1,
The fork device 320 moves up and down along the stacked pallets 350, reads information on the workpieces on each pallet, and sends it to the controller 90. The controller 90 instructs the conveyance device 20 and the multi-tasking lathe 10 to perform machining procedures and the like based on information about the workpiece that has been carried in. The traveling truck 310 and the fork device 320 transport the pallet 350 carrying the workpiece to a service position set directly below the guide rail 200, and work together with the gantry robot 210 to supply the corresponding workpiece 360 to the multi-tasking lathe 10. . The workpiece that has been processed by the multi-tasking lathe 10 is placed on the workpiece pallet 3.
Returned to 50. When all the workpieces on one pallet 350 are processed, the traveling truck 310 and the fork device 3
20 unloads the work pallet 350 to the unloading station WS2. Thereafter, the pallets 350 loaded with material workpieces are sequentially transported to the service position to continue processing.

The combined machining lathe 10 is capable of machining workpieces of various shapes and sizes. Depending on the type of workpiece, it is necessary to change the setup of the chuck of the spindle, tools, etc. 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 perpendicular to the guide rail 200 of the conveyance device 20 . On the base 500 is a rail 502
is provided, and a stocker 510 is mounted movably along axis X5. The stocker 510 has a box-like shape with an open top, and the exchange hand 25 is placed inside the stocker 510.
0 is stored. The exchange hand 250 is exchangeably attached to the tip of the arm 220 of the gantry robot 210. As the type of hand 250, compound machining lathe 10
There are a tool hand that handles tools to be supplied to the tool rest of the machine, a jaw hand that handles the jaws that are supplied to the chuck of the main spindle of the multitasking lathe 10, and a work hand that handles the workpiece. Work hands include a scroll chuck type hand that grips the end face of a workpiece and a work hand that grips the outer periphery of a bar workpiece. In a scroll chuck type work hand, it is necessary to replace the jaws of the hand depending on the diameter of the work. The hand jaw set 260 stored on the flange surface of the stocker 510 is
It is equipped with a jaw set that corresponds to the shape and dimensions of the workpiece and is replaced with the workhand. Both side fixtures of the base 500 of the setup member storage device 50 are equipped with large-capacity jig and tool storage devices.

FIG. 3 is a plan view of the tool storage device, FIG. 4 is a front view, and FIG. 5 is a side view. The tool storage device 60 has two chains 630 and 640 arranged in parallel. The two chains 630, 640 are threaded around a pair of chain sprocket wheels 610, 620 attached to opposite ends of the base 500. The first chain sprocket wheel 610 is the drive wheel and the second
The chain sprocket wheel 620 is a driven wheel. Drive wheel 610 is controlled by a servo motor 612. Drive wheel 610 and driven wheel 6
A service position SP for exchanging tools and jaws is set approximately in the center of the machine 20. Service position SP
A driven sprocket wheel 615 is provided at the bottom of the chain, and the amount of rotation of the wheel 615 is detected by an encoder to position the chain. The diameters of the wheels 610, 620 have large dimensions and a large radius of curvature. Therefore, the overall height H of the tool storage device 60 increases. The two tool storage devices 60 provided on both sides of the base 500 have symmetrical structures sandwiching the center line of the base 500.

FIG. 6 is a plan view showing the main parts of the tool storage device, and FIG. 7 is a side view. One chain 630 has plates 632 on both sides of links 631, and pins 63
It has a structure in which 3 are connected. The other chain 640 has a similar structure. Tool holder 65 for holding tools
0 has a board-like structure that connects the left and right chain links. A tool pocket 651 into which a tool 710 is inserted is provided in the center of the tool holder 650. The tool pocket 651 is the cylindrical shank 7 of the tool 710.
It has a cylindrical structure into which 12 is inserted. Serrations 713 are formed on the outer periphery of the tool shank 712. The tool holder 650 has a shaft 653 with serration grooves at the tip, and the shaft 653 has a cam follower 6.
55 to move in the axial direction. The serrations at the tip of the shaft 653 mesh with the serrations 713 of the tool shank 712 to form a receiving part for the tool 710. An ID antenna 790 is installed at a predetermined position on the base 500, and tool information written on an 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 example, 6 of 100 jaw holders are used.
60 are provided. The jaw holder 660 is the jaw 7
20 into the jaw pocket 661.

As described above, according to the present invention, the setup member storage device attached to the lathe is equipped with the first and second jig storage devices. The first tool storage device can store 50 tools and 100 jaws. The tool is fed to the first turret of the multitasking lathe. The jaws are fed into the chuck of the first spindle of the multitasking lathe. Generally, a spindle chuck is used as a set of three jaws. This jig and tool storage device can store 100 jaws, but a total of 99 jaws are stored in 33 sets, and one jaw holder is left empty. This empty jaw holder 665 can be used as the origin of a chain-type tool storage device. Since this device can accommodate a large number of tools and jaws, the lathe cell can continue unmanned production of a wide variety of workpieces for long periods of time. The tool magazine and jaw magazine constituting the tool storage device 60 of the present invention exchange tools and jaws at a service position set above the circulating chain. Therefore, at the bottom of the chain, the tools and jaws are subjected to a downward force and a force in the direction of pulling them out of the tool pocket or jaw pocket. Therefore, a mechanism is required to prevent the tool or jaw from slipping out of the pocket.

FIG. 8 is an explanatory diagram showing the operation of the jaw magazine. The jaw magazine, generally designated by the reference numeral 70, is controlled to move in the forward direction P1 or in the reverse direction P2. A service position SP for replacing jaws is set at the upper center of the path of the jaw magazine 70. At this service position SP, the jaw hand of the gantry robot pulls out a predetermined jaw 720 of the jaw magazine 70 from the magazine and returns it to the magazine. Therefore, the detachment prevention device provided in the jaw magazine 72 is
In the vicinity of the service position SP, the jaw is unclamped to allow the jaw to be pulled out of the pocket, and in other areas it is clamped to prevent the jaw from coming out of the pocket. As a mechanism for operating 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 on the upstream and downstream sides of the guide G1. When the jaw magazine 70 moves in the forward direction P1, an unclamping range UC1 is set between the guide G1 and the first dog D11. When the jaw magazine 70 moves in the reverse direction P, an unclamping range UC2 is set between the guide G1 and the second dog D12.

FIGS. 9, 10 and 11 show details of the jaw retaining device. The retaining device, which is generally designated by the 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 an inwardly bent portion 67.
3 is formed, and a cam follower 674 is attached to the lower end. The center of gravity of the bracket 672 is set at a position where the bracket 672 stands upright in its natural state so as to maintain a clamped state when the jaw pocket faces downward. Accordingly, the bend 673 at the upper end of the bracket 670 engages the shoulder 724 of the jaw 720 and prevents the jaw 720 from slipping out of the jaw pocket 661. Figure 12
9 is a plan view of the guide G1 and the two dogs D11 and D12. FIG. Guide G1 is
It is composed of a plate-like material 680 and has a cam groove 681. This cam groove 681 is the cam follower 6 of the retaining prevention device 670.
74 in the direction of the arrow. FIG. 11 is a view taken in the direction of arrow B in FIG. 9, showing a state in which the retaining device 670 rotates in the direction of the arrow and the bent portion 673 is removed 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 retainer 670 returns to the clamped state. 1st
The dog D11 has a main body 685 made of a plate-like material, and forms a chevron-shaped cam crest 686. When the cam follower 674 of the retainer 670 hits this cam crest 686, the cam action forces the retainer 670 to return to the clamped state.

Since the jaw magazine of the present invention is equipped with the fall prevention device as described above, the chain-type jaw magazine can be freely rotated within a vertical plane. Next, the tool drop prevention device will be explained with reference to FIGS. 13 to 17. The pocket 651 of the tool magazine has a cylindrical shape into which the shank 712 of the tool 710 is inserted. A shaft 653 is slidably attached to this tool pocket 651. A tool shank 71 is attached to the tip of the shaft 653.
Serrations 654 that engage with the serrations 713 of No. 2
is formed. This shaft 653 is the cam follower 65
5. The service position SP in the tool magazine is set near the service position SP of 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 on the upstream and downstream sides of the guide G2. The guide G2 has a main body 690 made of a plate-like material, and cam ridges 691 are formed at the front and rear of the main body 690. The first dog D21 has a main body 695 made of a plate-like material, and the main body 695 has a cam ridge 696.
has. The second dog D22 has a similar body 697, and the body 697 forms a cam ridge 698.

FIGS. 13 and 14 show tool 710 clamped within tool pocket 651. FIG. The shaft 653 comes into contact with the tool shank 712, and the serrations are engaged and the tool 710 is inserted into the tool pocket 651.
prevent it from falling. When the tool magazine approaches the service position SP, the cam ridge 691 of guide G2
The cam follower 655 rides up and pulls the shaft 653 away from the tool shank 712. FIGS. 15 and 16 show this state. Serrations 654 of shaft 653 disengage from serrations 713 of tool shank 712, allowing tool 710 to exit tool pocket 651. When passing through the service position, the cam follower 655 is pressed toward the tool shank 712 by the cam ridge 696 of the first dog D21, and the serrations of both are engaged to return to the clamped state. Therefore, even if the tool magazine moves downward, the tools are prevented from falling. Since the tool magazine of the present invention is equipped with the tool fall prevention device as described above, the tool magazine on the chain can be freely run in a vertical plane.

[0017]

[Effects of the Invention] As described above, in the present invention, the tool and jaw storage device can be constructed with a large capacity, so that unmanned machining can be continued for a long time with sufficient spare tools and spare shafts. can. The compound machining lathe includes a first spindle and a first tool rest, and a second spindle and a second tool rest. The jig and tool storage device of the present invention includes a tool magazine for accommodating tools and jaws to be supplied to a first spindle and a first tool rest, and a tool magazine for accommodating tools and jaws to be fed to a second spindle and a second tool rest. Since the tool magazine and the jaw magazine that house the tools are configured separately and each is controlled independently, the tools and jaws can be replaced in a short time. The tool or jaw is
Since the tool is unclamped only in the vicinity of the service position and is clamped within the storage device in other areas, the tool or jaw is prevented from falling even if the storage device is in the downward position. Since the tool or jaw fall prevention device does not include any driving means, no power is required and the structure is simple. Therefore, there are fewer failures, and even if there is a problem, it is easy to deal with it.

[Brief explanation of drawings]

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

[Fig. 2] Front view.

FIG. 3 is a plan view of the setup member storage device.

FIG. 4 is a front view.

FIG. 5 is a side view.

FIG. 6 is a plan view of a tool magazine and a jaw magazine.

FIG. 7 is a cross-sectional view.

FIG. 8 is an explanatory diagram showing a travel route of a tool magazine.

FIG. 9 is a front view showing details of the jaw magazine.

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

FIG. 11 is a view taken along arrow B in FIG. 9;

FIG. 12 is a view along arrow C in FIG. 9;

FIG. 13 is a cross-sectional view of the tool magazine.

FIG. 14 is a BB sectional view of FIG. 13.

FIG. 15 is a cross-sectional view of the tool magazine.

FIG. 16 is a sectional view taken along line AA in FIG. 15;

FIG. 17 is an explanatory diagram showing the action of the tool fall prevention device.

[Explanation of symbols]

1 Lathe cell 10 Combined machining lathe 20 Conveyance device 30 Work storage device 50 Setup component storage device 60 Jig and tool storage device 70 Joe 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 Tools 720 Joe

Claims (1)

[Scope of Claims] [Claim 1] A composite machining lathe, a work storage device and a setup member storage device arranged adjacent to the composite machining lathe, and a combination of the composite machining lathe, the work storage device, and the setup component storage device. A set-up parts storage device for a lathe cell is equipped with a transport device for transporting parts between the lathe cells, and the set-up parts storage device is installed on the top of the base so as to be linearly movable and can be replaced by a robot arm of the transport device. A lathe cell component storage device comprising a stocker for storing an attached hand and two jig and tool storage devices installed on both sides of a base. 2. The jig and tool storage device includes first and second chains running in parallel between a driving sprocket wheel and a driven sprocket wheel, and tools disposed between the first and second chains. 2. The lathe cell member storage device according to claim 1, comprising a magazine and a jaw magazine disposed on the side of one of the chains. 3. The lathe cell according to claim 2, wherein each pitch of the chain is provided with a tool pocket which is a component of a tool magazine and a jaw pocket which is a component of a jaw magazine. parts storage device. 4. The lathe cell component storage device according to claim 1, wherein each of the two jig and tool storage devices is provided with an independent chain drive control device. Claim 5: The tool magazine includes a tool pocket into which the shank of the tool is inserted, a shaft having serrations that engage with the serrations formed on the shank of the tool, and a tool drop prevention device comprising a cam follower that controls the shaft. Item 2. A lathe cell member storage device according to item 2. 6. The jig and tool storage device includes a guide disposed at a service position for exchanging tools set on a base, and a dog disposed near the guide. 6. The lathe cell component storage device of claim 5, wherein the cam cooperates with a cam follower on the shaft to unclamp the tool, and the dog cooperates with the cam follower to clamp the tool. 7. The jaw magazine is swingably attached to a jaw pocket into which the jaws are inserted, and has a bent surface that engages the shoulder of the jaw at one end and a plate-shaped bracket having a cam follower at the other end. 3. The lathe cell member storage device according to claim 2, further comprising a jaw fall prevention device. 8. The jig and tool storage device includes a guide disposed at a service position for replacing jaws set on a base, and a dog disposed near the guide, and a cam of the guide. The dog cooperates with the cam follower of the bracket to unclamp the jaw, and the dog cooperates with the cam follower to clamp the jaw. A member storage device for a lathe cell according to claim 7.