JPS6274541A - Complex lathe - Google Patents

Abstract

PURPOSE:To apply machining and boring to a work selectively by furnishing a means to make assembly and disassembly of a holder module and a cutting edge module and a means to perform handover/receipt of the cutting edge module. CONSTITUTION:An automatic tool replacement device 6 is furnished between a tool magazine 5 and a tool holding table 3. The tool magazine 5 consists of an eliptical guide rail 7 and a plate chain 8, and each plate of this plate chain 8 is equipped with a tool holder 10 consisting of a through hole. One modular tool 11 consisting of a holder module 12 and a cutting edge module 13 is accommodated in each of these tool holders 10. A tool grip 21 and a tool assembly device 22 are installed on the above-mentioned tool holding table 3. At both ends of a tool replacement arm 45 are installed clampers 48, 49, which are to grip a flange part 16 of holder module 12 to constitute the modular tool 11. This arrangement allows the tool base to be used commonly, wherein replacement is made only for edge tips of a fixed tool to perform machining and a rotary tool to perform boring.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a compound lathe having a function of assembling and disassembling modular tools and automatically transferring and receiving the modular tools.

[Technical background of the invention and its problems]

In a compound lathe that can selectively perform cutting and drilling with one machine, a tool magazine is provided in the compound lathe body, and this tool magazine stores different types of cutting tools and drilling tools. When a command signal specifying the type of tool required for machining is input from the control device, the tool magazine operates, indexes the specified tool, and inserts the tool into the main body of the compound lathe. A tool is already known which has the function of attaching a tool to a tool holder using an automatic tool changer and removing the tool from the tool holder and storing it in the tool magazine.

However, in the above-mentioned compound lathe, a single integrated tool is used. This one-piece tool generally consists of a tapered holder part a, a collar part bg, and a cutting edge part C, as shown in FIG.

The cutting edge C varies depending on the purpose of processing, but
The holder portion a is formed to have the same shape so that it can be mounted on a common tool holder of a compound lathe. Therefore, in the case of one integrated tool, it is necessary to prepare a large number of tools that differ only in the cutting edge portion C and store them in a tool magazine. For this reason, the cost per tool becomes high, the tool magazine for storing the tools becomes large, and the equipment for the compound lathe becomes large-scale.

[Purpose of the invention]

This invention was made with attention to the above-mentioned circumstances, and its purpose is to automatically supply and assemble a blade module to a holder module attached to a tool grip of a tool holding stand. To provide a compound lathe in which a used modular tool can be disassembled and only the blade module can be replaced, and a tool magazine can be downsized and tool costs can be reduced.

[Summary of the invention]

In order to achieve the above object, the present invention provides a tool magazine for storing a plurality of different types of blade modules constituting a modular tool in the main body of a compound lathe, and a tool holding table grips a holder module constituting the modular tool. In addition, a tool assembly device is provided for assembling and disassembling the holder module and the blade module, and a tool automatic device is provided for transferring the blade module between the tool magazine and the tool holding stand. The problem lies in configuring the exchange device.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows the entire complex II lathe, where 1 is the main body of the complex lathe. The compound lathe main body 1 is provided with a chuck mechanism 2 for mounting a workpiece and a tool holder 3, and the tool holder 3 can be moved forward and backward with respect to the chuck mechanism 2 by a tool carriage 4. Further, a tool magazine 5 is provided in the upper part of the compound lathe body 1, and an automatic tool changer (hereinafter referred to as ATC) 6 is provided between this tool magazine 5 and the tool holding table 3, and the tool magazine 5 is provided with an automatic tool changer (hereinafter referred to as ATC) 6. It is now possible to selectively take out tools stored in the tool magazine 5 and supply them to the tool holder 3, or to remove tools from the tool holder 3 and store them in the tool magazine 5. ing. That is, the tool magazine 5 is composed of a flat elliptical guide rail 7 and a plate chain 8 that is guided by the guide rail 7 and runs endlessly. Each plate 9 of this plate chain 8 is provided with a tool holder 10 made of a through hole, and these tool holders 10...
Each module constituting the modular tool 11 is stored one by one. That is, as shown in FIG. 5, for example, the modular tool 11 is composed of a holder module 12 and a blade module 13, and a tapered part 14 of the holder module 12 has an engaging pawl 15 at its tip and a collar part at its lower end. 16 and a petal-shaped engaging claw 17 are provided. Further, a petal-shaped engagement hole 18 that can be engaged with the engagement claw 17 of the holder module 12 is provided at the upper end of the blade module 13, and a blade portion 19 is provided at the lower end. Then, by engaging the engagement hole 18 of the blade module 13 with the engagement claw 17 of the holder module 11, the modular tool 11 is combined into one body.
is now configured. Note that 20 is tightened with a bolt.

Among the modular tools 11 configured in this way, a large number of blade modules 13 of different types are stored in the tool holders 10 of the tool magazine 5, and the blade modules 13 are stored in the tool holders 10 of the tool magazine 5. It can be inserted and removed from the front side.

On the other hand, the tool holder 3 is provided with a tool gripper 21 and a tool assembly device 22, which will be described later.

That is, as shown in FIGS. 2 to 4, reference numeral 28 denotes a gripper main body, and a rotary drum 30 is rotatably supported inside the gripper main body via a bearing 29.

A tapered hole 31 is provided at the lower end of the rotating drum 30, and a drawbar 33 having a collet chuck 32 is provided at the bottom thereof. This drawbar is connected to a piston 35 of a hydraulic cylinder 34 provided inside the rotating drum 30, and the drawbar 33 is biased in the retracting direction by a disc spring 36. In addition,
37 is a drive mechanism that rotationally drives the rotating drum 30;
38 is a rotary coupler that sends hydraulic pressure to the hydraulic cylinder 34. Then, the modular tool 1 is inserted into the tapered hole 31.
1 holder module 12 is attached. Further, a bracket 39 is provided on the side wall of the grip main body 28.
A nut runner 40 is provided via the nut runner. This nut runner 40 is composed of a drive motor 41, a gear mechanism 42, and a tightening shaft 43, and the tightening shaft 43 is configured to be pressed against the bolt 20 by an air cylinder 44 to tighten the modular tool 11.

The tool gripper 21 and the tool assembly device 22 configured in this way can move forward and backward with respect to the workpiece held by the chuck mechanism 2 by the tool carriage 4 integrally with the tool holding stand 3. Installed modular tool 1
1 allows cutting or drilling to be performed.

Further, the ATC 6 automatically exchanges old and new tools, and a longitudinally intermediate portion of a tool exchange arm 45 is attached to a rotating shaft 47 of a rotary gear cylinder 46 .

Clampers 48 and 49 for gripping the collar portion 16 of the holder module 12 constituting the modular tool 11 are provided at both ends of the tool exchange arm 45. The tool exchange arm 45 is rotatable about a rotating shaft 47, and at the time of exchange, one clamper 48 faces the tool gripper 21 of the tool holder 3, and the other clamper 49 faces the tool magazine. Modular tools 11.11 located at respective positions opposite the tool transfer positions 5a of 5 can be gripped.

Next, the operation of the compound lathe configured as described above will be explained. When machining with the modular tool 11 attached to the tool holder 21 of the compound lathe main body 11 is completed and machining is to be performed next with another new modular tool 11, the used one attached to the tool holder 21 is It is necessary to remove the modular tool 11 and install a new modular tool 11 in the tool gripper 21. In such a case, the tool magazine 5, tool assembly bag! An activation signal is input to 22 and ATC6. First, when a tool designation signal is input to the tool magazine 5, the plate chain 8 runs in forward and reverse directions to position the designated tool, that is, the tool holder 10 holding the blade module 13, at the tool transfer position 5a. Ru. At this time, the tool gripper 21 has a holder module 12 configuring the modular tool 11 and a blade module 13 8.
By the rotation of the tool exchange arm 45 of the ATC 6, one clamper 48 faces the blade module 13 of the old modular tool 11 attached to the tool gripper 21, and the other clamper 49 is used for tool exchange. It faces the new blade module 13 positioned at position 5a. Each clamper 48.49 then clamps a blade module 13.13. Next, tool exchange arm 4
5 is advanced by the rotary gear cylinder 46, the old blade module 13 can be handled from the holder module 12, and the folded blade module 13 can be handled from the tool holder 1o.
Get out of. Here, when the tool exchange arm 45 rotates, the new blade module 13 faces the tool gripper 21,
The old blade module 13 faces the tool holder 10 of the tool magazine 5. Then, again the rotary air cylinder 4
When the tool exchange arm 45 is retracted by 6, the old blade module 13 is stored in the tool holder 10, and the new blade module 13 is inserted into the holder module 12 attached to the tool gripper 21. That is, the engagement hole 18 of the blade module 13 is connected to the engagement claw 1 of the holder module 12.
7. Here, when the air cylinder 44 of the tool assembly device 22 moves forward and presses the tightening shaft 43 of the nut runner 40, the tightening shaft 43 engages with the bolt 20,
When the motor 41 rotates in this state, the tightening shaft 43 rotates via the gear mechanism 42, thereby tightening the bolt 20. Therefore, the holder module 12 and the blade module 13 constitute a modular tool 11. When the assembly of the modular tool 11 is completed, the tool holder 3 is advanced by the tool carriage 4 to approach the workpiece, and normal cutting and drilling can be performed. At this time, the tool exchange arm 45 rotates around the rotation axis 47 and returns to the neutral state, so the tool exchange arm 45 rotates around the rotation axis 47 and returns to the neutral state.
does not interfere with the workpiece or the tool holder 3. When the machining is finished, the tool exchange arm 45 rotates again to remove the modular tool 11 mounted on the tool gripper 21.
The blade module 13 is clamped by the clamper 48, and the modular tool 11 is disassembled in this state. That is, the air cylinder 44 of the tool assembly device 22 advances to engage the tightening shaft 43 with the tightening bolt 20 of the modular tool 11 . Next, when the motor 41 rotates the shaft 44 through the gear mechanism 42, the bolt 20 is tightened.
is loosened, and the holder module 12 and blade module 1
3 can be separated. And Tool II! ! Holder 21
When the drive mechanism 37 operates to rotate the rotary drum 30, the engagement between the engagement claw 17 of the holder module 12 and the engagement hole 18 of the blade module 13 is released.

Therefore, when the tool exchange arm 45 is moved forward by the rotary gear cylinder 46 as described above, the blade module 13 is extracted from the holder module 12, and the rotation of the tool exchange arm 45 causes the blade module 13 to be transferred to the tool magazine 5. It will be stored in a predetermined tool holder 10. Therefore, the tool magazine 5 prepares for indexing the blade module 13 of the modular tool 11 used for splicing, and selectively combines different types of blade modules 13 to the common holder module 12 to create a composite lathe body. It can be supplied to one tool holding stand 3.

In addition, according to the above-mentioned embodiment, a modular tool was configured by the holder module and the blade module, but there is also a case where the blade module is connected to the holder module via an adapter module to configure a modular tool. Even in this case, the adapter module can be stored in the tool magazine, and the adapter module can be taken out and installed as needed.

Furthermore, although the tool magazine is constructed from a guide rail and an endlessly running plate chain, it is also a mechanism that can store a large number of tools such as blade modules and selectively position the tool designated by the tool designation signal to the tool transfer position. If so, the structure is not limited to the above embodiment and can be modified as appropriate. Furthermore, although the tool magazine is provided within the compound lathe main body, the tool magazine is not limited thereto, and may be provided near the compound lathe main body. Further, if there is no problem with the rigidity of the compound lathe main body, the tool holding stand may be installed above the tool magazine.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to take out the blade module from the tool magazine and automatically assemble it into the holder module mounted on the tool holding stand of a compound lathe, and also to remove the blade module from the tool magazine after use. It is possible to automatically disassemble the blade module and replace only the blade module. Therefore, only the cutting edge of the fixed tool for cutting and the rotary tool for drilling can be replaced, and the base portion of the tool can be shared. As a result,
The tool magazine can be made smaller than the conventional one-piece tool magazine that stores one tool, and tool costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a compound lathe showing an embodiment of the present invention;
Figure 2 is a front view of the tool assembly device and automatic tool changer, Figure 3 is a side view of Figure 2, Figure 4 is a longitudinal sectional front view of the tool grip, and Figure 5 is a side view of the modular tool. , 6th
The figure is a side view of one conventional integrated tool. 1...Compound lathe main body, 3...Tool holding stand, 5...
Tool magazine, 6...ATC (automatic tool change bag @),
DESCRIPTION OF SYMBOLS 11... Modular tool, 12... Holder module, 13... Blade module, 21... Tool grip,
22...Tool assembly i position. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 3 Figure 4 Figure 6 Figure 5

Claims (1)

[Claims] In a compound lathe that is equipped with a tool holder that can selectively mount a fixed tool and a rotary tool, and can selectively perform cutting, drilling, etc. on a workpiece, there are several types of modular tools. A tool magazine for storing a plurality of different blade modules is provided, a tool gripper for gripping the holder modules constituting the modular tool is provided on the tool holder, and the holder module and the blade module are assembled and disassembled. A compound lathe characterized in that a tool assembly device is provided, and an automatic tool change device for transferring a blade module between the tool magazine and the tool holder.