JPS62130106A - Automatic tool assembling device - Google Patents

Abstract

PURPOSE:To automatize assembling and disassembling of a modular tool and miniaturize a device by providing a magazine for housing a tool part module, a chuck for feeding said tool part module, and a combining mechanism. CONSTITUTION:A chuck 30 is opened and closed by means of a rotary actuator 29 on the end of a rotary arm 27 which is rotated by a driving mechanism 26, to hold a tool module (a) from the tool supporting part 4 of a magazine 2 provided on one side of a body 1. The rotary arm 27 is lifted up by an air cylinder 28 and 180 deg. rotated, to transfer the tool module (a) to an assembling position 6 provided on the other side. And, as the tool module (a) is engaged with a holder module (b) which is being clamped by a clamping mechanism 10, it is tightened and combined by means of a nut runner 31 provided on the other end side of the rotary arm 27. Then, the combined tool is fed to a machine tool by means of a traverser device, while a used tool is returned and disassembled by reversing above procedures.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an automatic tool assembly device for automatically assembling a modular tool to be mounted on a machine tool such as an NC lathe.

[Technical background of the invention and its problems]

Cutting tools for lathes consist of a holder section that is attached to the tool rest of the lathe and a cutting edge section provided on this holder section, but recently modular tools have been developed in which the holder section and the cutting edge section can be separated. . This modular tool consists of a holder module and a blade module, and by selectively combining different types of blade modules to the holder module, the holder module can be shared, reducing tool storage space and There are many advantages such as ease of transportation and cost reduction.

However, conventional modular tools have a completely different connection structure from fixed tools used in NC lathes and rotary tools used in machining centers, etc., and also have a connection structure and disassembly of the blade module to the holder module.
In other words, assembly and disassembly of modular tools are performed manually by workers. Therefore, the efficiency of assembly/disassembly work is poor, and although different blade modules can be exchanged and combined into one holder module and the holder module can be shared, when tools are frequently replaced with the machine tool, In order to eliminate the waiting time, it is necessary to stock a large number of modular tools in an assembled state, which results in the inconvenience of having to prepare a large number of holder modules. Furthermore, when the tools become large, they become heavy and heavy, which poses a danger when handling them during assembly and disassembly work.

[Purpose of the invention]

This invention was made in view of the above-mentioned circumstances, and its purpose is to enable self-assembly work of the blade module to the holder module in a modular tool, and to allow only the blade module to be mounted in the magazine. An object of the present invention is to provide an automatic tool assembly device that can reduce the storage space and downsize the device by storing the tool in the tool.

[Summary of the invention]

In order to achieve the above object, the present invention holds a magazine for storing a blade module and a holder module in a horizontal state, and has a blade module stored in the magazine at one end between the magazine and an assembly position. It has a chuck that grips and supplies the blade module to the holder module, and a rotating arm that has a coupling mechanism for connecting the holder module and the blade module at the other end, and is capable of assembling and disassembling the blade module with respect to the holder module. The reason is that it is configured so that it can be done automatically.

[Embodiments of the invention]

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

1 and 2 show the entire automatic tool assembly device, and 1 is the main body. A magazine 2 is provided on one side of the main body 1. The magazine 2 is composed of a disk 3 that can be rotated in forward and reverse directions, a large number of tool holders 4 provided at equal intervals on the outer peripheral surface of the disk 3, and a motor 5 that rotationally drives the disk 3. And this tool holding part 4
Blade modules a of different types constituting the modular tool A are removably inserted into the module.

Further, on the other side of the main body 1, there is provided an assembly position 6 which also serves as a disassembly position for the modular tool A, and this assembly position 6 has a holder module b for the modular tool A as shown in FIGS. 3 to 5. Hold Ial#
17 are provided. That is, 7a and 7a are a pair of support stands, and these support stands 7a and 7a have bearings 7b1.
7b is provided. And these bearings 7b, 7b
Rotating shafts 8a and 8b are rotatably supported on the shafts. Support frames 9a and 9b are fixed to these rotating shafts 8a and 8b, and holder modules b are attached to these support frames 9a and 9b.
A clamping mechanism 10 is provided for clamping from the radial direction. This clamp mechanism 10 is connected to the rotating shaft 8.
The holder module b can be rotated by 90'' by a drive motor 11 interlocked with the holder module b, and is configured to be able to change its posture in the horizontal and vertical directions while the holder module b is clamped.

In addition, the holder module b has a tapered portion 12 which is attached to a cutting tool mount of a machine tool, as shown in FIGS. 6 and 7.
A holder part 1 is detachably fixed to the tapered part 12.
It is composed of 3.

An annular groove 14 is provided in the tapered portion 12, and the clamp mechanism 10 holds the holder module b by clamping the annular groove 14. Further, a blade module holder is provided with a stand 15 protruding from the front surface of the holder part 13, and a drawbar 16 is provided on the holder part 13 located on the holder 15 so as to be freely projectable and retractable. There is. The base of the drawbar 16 is slidably inserted into a guide hole 17 provided in the holder portion 13, and a tapered hole 18 made of a square hole is bored in the base of the drawbar 16. A key groove 20 is provided in the tapered surface 19 of the tapered hole 18 along the vertical direction, and an engaging portion 2 that engages with the key groove 20 is provided in the tapered hole 18.
1, and a slider 22 having a tapered surface that matches the taper hole 18 is inserted so as to be vertically movable.

A screw hole 23 is vertically bored in the slider 22, and a drive screw 24 inserted from above the holder portion 13 is screwed into the screw hole 23. Therefore, when the drive screw 24 is rotated, for example, to the right, the slider 22 rises through the screw hole 23, and when the drive screw 24 is rotated to the left, the slider 22 descends through the screw hole 23. . The drawbar 16 can be pulled into the guide hole 17 by raising the slider 22, and can be made to protrude from the guide hole 17 by lowering the slider 22. Further, a holder portion 13 of the holder module b is provided at the base of the blade module a.
An engagement recess 25 is provided that can be engaged by inserting the drawbar 17 from above into the engagement recess 25.
5 is coupled to the drawbar 17, and the blade module a is integrally coupled to the holder module b.Conversely, by protruding the drawbar 17, the coupling with the engagement recess 25 is released and disassembly becomes possible. .

Further, between the magazine 2 and the assembly position 6 in the upper part of the main body 1, a rotary drive mechanism 26 such as a rotary actuator having a brake 26a is provided.
A rotating arm 27 that rotates by 0° is provided, and this rotating arm 27 is configured to be movable up and down by an air cylinder 28. Furthermore, a chuck 3 that is opened and closed by a rotary actuator 29 is provided at one end of the swing arm 27.
o, and a nut runner 31 as a coupling mechanism is provided at the other end. The chuck 30 has claws 30a, 30a that clamp the blade module a stored in the tool holding part 4 of the magazine 2 from both sides thereof,
The blade module a can be attached to and detached from the tool holder 4, and the nut runner 31 is constructed as shown in FIG. That is, 32 is a motor fixed to the swing arm 27 via a bracket 33, and a drive gear 35 is fitted onto a rotating shaft 34 of this motor 32. A gear housing 36 fixed to the bracket 33 is provided adjacent to the drive gear 35, and a rotating cylinder 38 rotatably supported via an oil-impregnated bearing 37 is provided within the gear housing 36. It is being A driven gear 39 that meshes with the driving gear 35 is provided on the outer circumferential surface of the rotating cylinder 38, and a spline groove 40 is provided on the inner circumferential surface. And this spline groove 4
0, a spline shaft 41 is inserted so as to be movable in the vertical direction, and this spline shaft 41 is always urged downward by a spring 42.

A tightening shaft 43 is attached to the lower end of the spline shaft 41, and is capable of tightening and loosening the drive screw 24 provided in the holder portion 13 of the holder module b.

The automatic tool assembly device for fixed tools configured in this way is installed adjacent to the automatic tool assembly device 45 for rotary tools, for example, as shown in FIG. A fixed tool and a rotary tool are selectively moved to a tool stocker 48 by a tool gripper 47 provided in the tool stocker 48.
The tools are transported from the tool stocker 48 to a machine tool (not shown) by a transport robot or the like, and these are controlled by a control device 49.

Next, the operation of the tool assembly device configured as described above will be explained. When the machining order is determined based on the production management information and the tools required for the machining are known, a tool designation signal is input from the control a device 49 to the automatic tool assembly device. For example, when the specified tool is a fixed tool used in an NC lathe, first, the disk 3 of the magazine 2 is rotated by the motor 5, and the specified blade module a is rotated by the motor 5.
The tool holding part 4 in which the tool is stored is located at the transfer position 4a and stops. On the other hand, the holder module b carried in by the tool gripper 47 of the traverser device 46 at this time is clamped by the clamp mechanism 10 provided at the assembly position 6 and held in a horizontal state. next,
Swivel arm 2 in raised position by air cylinder 28
7 is rotated by the rotational drive mechanism 26, and the chuck 30 at one end thereof faces the blade module a located at the transfer position 4a. And rotary actuator 2
The chuck 30 in the open state due to the rotation arm 2
When the chucks 7 are lowered to face both sides of the blade module a, the chucks 30 are closed and clamp the blade module a. When the chuck 30 chucks the blade module a, the turning arm 27 rises and then turns 180 degrees by the rotation drive mechanism 26. The blade module a, which is chucked by the chuck 30 by the pivoting movement of the pivoting arm 27, faces the holder module b located at the assembly position 6. Here, when the swing arm 27 descends again, the engagement recess 25 of the blade module a engages with the drawbar 16 provided in the holder part 13 of the holder module b, and the blade module holder is placed on the stand 15. be done. When the transfer of the blade module a to the holder module b is completed in this manner, the swing arm 27 rises and then swings 180 degrees. Therefore, the pivot arm 2
A nut runner 31 provided on the other end side of the nut runner 7 faces the assembly position 6, and a shaft 43 for tightening the nut runner 31 faces the drive screw 24 provided on the holder portion 13 of the holder module b.

Then, when the swing arm 27 descends again, the tightening is performed on the shaft 4.
3 is engaged with the drive screw 24, and the motor 32 is driven. Therefore, the rotation of the rotating shaft 34 is transmitted from the drive gear 35 to the rotating cylinder 38 via the driven gear 39, and the tightening shaft 43 is rotated roughly via the spline shaft 41. Tighten on shaft 4
When the drive screw 24 is rotated to the right by the rotation of step 3 and the drawbar 16 is retracted, the engaged blade module a is integrally connected to the holder module b, completing the assembly of the modular tool A. . When the assembly of the modular tool A is completed, the swing arm 27 rises, turns 90 degrees, and waits in a neutral state.

When the nut runner 31 is retracted from the assembly position 6 by the rotation of the rotation arm 27, the drive motor 11 is activated and the support frame 9a is moved through the rotation shaft 8a.

9b rotates. Then, when the clamp mechanism 10 rotates 90 degrees, the modular tool a is changed to a vertical position with the tapered portion 12 of the holder module b facing upward. When the modular tool A is waiting at the assembly position 6 in this way, the traverser device 46 is activated, and its tool gripper 47 grips the tapered part 12 of the modular tool A and carries it out to the tool stocker 48. 'II
The used modular tool A from machine N is placed in the tool stocker 48.
From there, it is transported to the assembly position 6 of the automatic tool assembly device by the traverser device 146.

At this assembly position 6, the used modular tool A is clamped in a vertical position by the clamp mechanism 10 of the holding mechanism 7 described above, and then changed to a horizontal position. When the modular tool A is positioned at a predetermined position, the swing arm 27 swings and the nut runner 31 faces the holder 117. The nut runner 31 is tightened by the shaft 43 in the holder part 1 of the holder module b.
Rotate the drive screw 24 provided at 3 to the left.

When the drive screw 24 is rotated to the left, the drawbar 16 protrudes, and the drawbar 16 engages the engagement recess 25 of the blade module a.
The connection state with is canceled. Next, when the turning arm 27 turns 180 degrees, the nut runner 31 is retracted from the assembly position 6 and the chuck 30 is opposed to it. Then, the chuck 30 chucks the blade module a, and the rotating arm 27 rotates the blade module a.
Only the tools are stored in the tool holding section 4 of the magazine 2. Further, the holder module b clamped by the clamp mechanism 10 of the holding mechanism 7 is in a standby state for assembly of the modular tool A to be used for the next machining, and various different blade modules a are connected to the common holder module b. can do.

The automatic tool assembly device of the present invention is provided with a chuck at one end of the revolving arm and a nut runner at the other end. The blade module can be chucked with a chuck, and the loss time of selecting and picking up the blade module can be saved. Furthermore, the two swing arms may be disposed to intersect in a criss-cross pattern, if necessary.

〔Effect of the invention〕

As explained above, according to the present invention, the assembly and disassembly of the blade module with respect to the holder module constituting the modular tool can be performed automatically and efficiently.
Only the blade module needs to be housed in a compact magazine, making it possible to downsize the device. Furthermore, by communicating with the machine tool using the traverser device and creating a system, unmanned operation becomes possible.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the automatic tool assembly device, Fig. 2 is a plan view thereof, Fig. 3 is a plan view of the holding mechanism, and Fig. 4 shows a holder module. FIG. 5 is a side view of the holder module held in a horizontal state, FIG. 5 is a side view of the holder module with its posture changed vertically, FIG. 6 is a plan view showing the relationship between the holder module and the blade module, and FIG. 7 is a side view of the holder module held in a horizontal state. 8 is a partially cutaway side view of the coupling mechanism, and FIG. 9 is a plan view of the automatic tool assembly and conveyance system. 2...Magazine, 4...Tool holding part, 27...Swivel arm, 30...Chuck, 31...Nut runner (coupling mechanism), a...Blade module, b...Holder Module, A...Modular tool. Applicant's representative Patent attorney Takehiko Suzue Figure 1 A'-"7'zo' Figure 2 Figure 3! Figure 4 Figure 5

Claims (2)

[Claims] (1) A modular tool in which the holder module and the blade module can be separated; a magazine that stores a large number of types of the blade module in an aligned state; and a magazine that is rotatably provided between the magazine and the assembly position; The invention further includes a chuck for gripping the blade module stored in the magazine and supplying the blade module to the holder module, and a rotating arm having a coupling mechanism for connecting the holder module and the blade module at the other end. Features: Automatic tool assembly equipment. (2) The automatic tool assembly device according to claim 1, wherein the magazine has a large number of tool holding parts on the outer peripheral surface of a disk that can freely rotate in forward and reverse directions.