JP2000117577A - Tool magazine device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a tool exchange time and suppress braking. SOLUTION: A tool magazine device comprises a tool holding part 3, serving as a plurality of first tool holding means, arranged on a given periphery and removably holding a tool T; a tool pot 101 for movement, serving as a second tool holding means, to removably hold a tool; and a tool selecting device 21, serving as a tool selecting means, to hold the tool pot 101 for movement and cause the tool pot 101 for movement to effect operation to transfer a given tool between the tool holding part 3, selected from the tool holding parts 3, and the tool pot 101 for movement, and move the tool pot 101 for movement between a tool exchange position PT by a tool exchange arm 201 arranged in the non-arrangement region of the tool holding part 3 and the tool holding part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool magazine device which is built in or attached to a machine tool such as a machining center, supplies a tool to the machine tool, and stores a tool removed from the machine tool.

[0002]

2. Description of the Related Art As a tool magazine device for stocking a plurality of tools in an automatic tool changer, for example, a plurality of tool pots for detachably holding tools are arranged in a circumferential direction of a rotating body which rotates about a predetermined rotation axis. There is known a configuration fixed at equal intervals. The tool exchange operation between the tool magazine device of this type and the spindle device of the machine tool is performed, for example, by providing a tool exchange arm between the tool magazine device and the spindle device of the machine tool, and holding the designated tool. The tool pot to be moved is moved to a tool change position at which the tool change arm can be gripped, the specified tool is gripped by one grip portion of the tool change arm, and the tool change arm is moved linearly and pivotally to the designated spindle device. Carry tools. In duplicate with this operation, the tool mounted on the spindle device is gripped by the other gripping portion of the tool change arm, carried to the above-described tool change position, and mounted on the tool pot.

[0003]

In the tool magazine device having the above-described structure, the tool mounted on the spindle device is directly replaced with the tool pot holding the tool to be newly replaced. It is necessary to electrically store and manage whether or not the tool is stored in the machine in accordance with the machining sequence, and the management becomes complicated, and there is a disadvantage that errors such as a wrong tool to be mounted on the spindle device are likely to occur. In order to solve the above disadvantages, it is necessary to adopt a configuration called a fixed address system in which a specific tool is always stored in each tool pot.

Conventionally, in order to use a tool magazine device of a fixed address type in which a specific tool is stored in each tool pot, for example, an intermediate pot for taking out a tool is provided at an outer peripheral position of a plurality of tool pots. It is necessary to take out the tool from the tool pot into this intermediate pot, hold it by the tool exchange arm, and mount it on the spindle device.
That is, transfer between the tool pot holding the specified tool moved to the replacement position and the intermediate pot, the tool held in the intermediate pot and the tool mounted on the spindle device are replaced by the tool replacement arm, During this exchange operation, the empty tool pot for storing the tool attached to the spindle device is moved to the exchange position, and the tool attached to the spindle device held in the intermediate pot is moved to the above empty tool pot. By transferring, a specific tool can always be stored in the tool pot. However, in the tool magazine device having the above-described configuration, a tool changing device must be provided between the tool pot and the intermediate pot, and there is a disadvantage that the device is expensive, and the tool magazine and the intermediate pot have a disadvantage. There is a disadvantage in that it takes time to transfer the tool between them, and it is difficult to reduce the tool change time between the tool magazine device and the spindle device. Furthermore, in the tool magazine device having the above-described configuration, when a tool is changed, the rotating body to which the plurality of tool pots are fixed is rotated, so that the generated vibration is large, and the vibration is generated by the tool mounted on the spindle device. There was also the disadvantage that processing could be adversely affected.

[0005] The present invention has been made in view of the above problems, and has as its object to provide a tool magazine device capable of shortening the tool change time and suppressing vibration.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a tool for holding a plurality of tools mounted on a spindle device of a machine tool, and supplying and storing the tools to and from the spindle device via a tool changing arm. A magazine device, a plurality of first tool holding means arranged on a predetermined circumference and detachably holding the tool, a second tool holding means capable of detachably holding the tool, The second tool holding means is held by the second tool holding means between the first tool holding means and the second tool holding means selected from the first tool holding means. And the second tool holding means is provided in a non-arranged area of the first tool holding means with a tool changing position by the tool changing arm and the first tool holding means. Tool selection means for moving between the two.

[0007] The tool selecting means rotates the second tool holding means to a rotation position corresponding to the selected first tool holding means about a predetermined axis passing through the center of the circumference. A turning mechanism, a radial moving mechanism for moving the second tool holding means in a radial direction of the circumference, and an axial moving mechanism for moving the second tool holding means in a direction along the predetermined axis. A predetermined tool transfer operation between the first tool holding unit and the second tool holding unit is performed by a cooperative operation of the radial moving mechanism and the axial moving mechanism.

The tool selection means includes a cam mechanism for defining a predetermined tool transfer operation including the radial movement operation and the predetermined axial movement operation of the second tool holding means, and the cam mechanism. And a single drive source for driving the radial movement mechanism and the axial movement mechanism.

The first tool holding means has an openable / closable gripper for gripping the tool moving in the radial direction in a direction along the predetermined axis, and the second tool holding means has A holding portion for holding the tool by entering the tool from behind and holding the tool, wherein the tool selecting means moves the second tool holding means in the radial direction to grip the first tool. At a predetermined position behind the tool holding means, the holding portion of the second tool holding means enters the tool, and the tool is held in the holding portion and moved in the radial direction. A tool is transferred from the first tool holding means to the second tool holding means, and the second tool holding means holding the tool in the holding portion is moved to a predetermined radial position to thereby obtain the first tool. The tool is gripped by the gripping claws of the holding means, and the second The tool holding means is disengaged behind the corresponding tool transfer the tool to the second tool holding means from the second tool holding means.

[0010] The second tool holding means has an opening means for opening a gripping claw of the first tool holding means when approaching the first tool holding means.

In the present invention, the plurality of first tool holding means are fixed, and the tool held by the first tool holding means is moved to the second tool holding means by a predetermined tool transfer operation of the second tool holding means. The second tool holding means is moved to a tool changing position by the tool changing arm. Therefore, the delivery of the tool between the first tool holding means and the tool changing arm can be performed only by the operation of the second tool holding means, and the time required for the tool changing operation can be reduced.
In addition, since it is not necessary to move the plurality of first tool holding units, it is possible to minimize the occurrence of vibration from the tool magazine device.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an example of a configuration of an automatic tool changer of a machining center which is a machine tool to which a tool magazine device according to an embodiment of the present invention is applied. In FIG. 1, the automatic tool changer is
Tool magazine device 1 and spindle device 5 of machining center
1 and a tool changing arm 201 provided between the tool magazine device 1 and the tool magazine device 1.

The tool changing arm 201 is used to move the tool T moved to the tool changing position PT of the tool magazine device 1 between the spindle device 501 of the machining center and the tool magazine device 1.
Is provided at a position where it can be gripped. Tool change arm 2
01 are provided with semicircular grips 205a and 205b for gripping the tool T, respectively. The grips 205a and 205b are provided with a spring biased by a spring engaging with the tool T. Stop portions 206a and 206b are provided, respectively. The tool changing arm 201 includes a tool changing arm 201 provided behind the tool changing arm 201.
A cam mechanism that defines a tool changing operation including a predetermined turning operation and a linear motion built in a driving unit 208 that drives the motor drives the turning operation around the rotation axis 209 and the linear movement along the rotation axis 209. I do. Also, the driving unit 20
8 is a drive motor 2 provided on the tool magazine device 1 side.
07. The spindle device 501 has a tool T detachably mounted in a horizontal direction from a tip thereof, and moves to a tool change position Ps shown in FIG. 1 where the grip portion 203 of the tool change arm 201 can be gripped at the time of tool change. , A tool change is performed.

The tool magazine device 1 comprises a plurality of tool holders 3 arranged along a circumferential direction on an arc-shaped frame 5 centered on a predetermined axis O, and a tool holder on one end of the frame 5. 3 includes a manual exchange tool holder 4 for manually exchanging the tool T on the circumference provided with 3, and a tool selection device 21 provided rotatably about an axis O.

The tool holding section 3 has two gripping claws 3a and 3b which can be freely opened and closed for gripping a gripping part of the tool T. When the gripping claws 3a and 3b are closed, the tool T is closed. In the direction along the axis O. The tool holding unit 4 for manual replacement has the same configuration as the tool holding unit 3, and the tool T is provided from the rear side through the cutout 2 a of the disk-shaped plate 2 provided around the shaft 22 in the tool magazine device 1. Can be installed.

FIG. 2 is a top view of the tool magazine device 1, FIG. 3 is a cross-sectional view of a tool selection device 21 provided in the tool magazine device 1 in a direction along the axis O, and FIG. FIG. 5 is a cross-sectional view of the device 21 in a direction orthogonal to the axis O, and FIG. 5 is a side view of the tool selection device 21 viewed from a direction orthogonal to the axis O. 2 to 5, the tool selection device 21
Has a cylinder section 41, a cam mechanism section 61, and a drive mechanism section 111.

The driving mechanism 111 is, as shown in FIG.
A drive motor 112 fixed to a frame of the tool magazine device 1 and a coupling 1 connected to an output shaft of the drive motor 112
13, a chain member 115 wound around the sprocket member 114 and the sprocket member 47 provided on the cylinder portion 41.
And

The cylinder portion 41 includes a cylinder member 42,
It has a piston rod 43 and a cylinder holding member 45. The cylinder member 42 is formed of a cylindrical member having a through hole 42a formed therein. The cylinder holding member 45 is provided with two bearings BR1 and BR2 at both ends thereof so that the through hole 42a is concentric with the axis O. Has been held. The piston rod 43 is inserted into the through hole 42a of the cylinder member 42, and seal members 48 and 49 for forming a cylinder chamber in the cylinder member 42 are fitted and inserted from both ends of the through hole 42a. I have.
Through holes are formed in the seal members 48 and 49, respectively, and the shafts of the piston rods 43 are fitted and inserted into these through holes. The seal member seals between the cylinder member 42 and the outer periphery of the seal members 48 and 49, and between the piston rod 43 and the through holes of the seal members 48 and 49. In the cylinder member 42, supply paths 42a and 42b for supplying oil pressure to a cylinder chamber formed in the cylinder member 42 are formed.

The piston rod 43 is held movably in the directions of arrows A1 and A2 by seal members 48 and 49, and the piston portion 43a is fitted in the through hole 42a of the cylinder member 42. The stroke amount S of the piston rod 43 is defined by the seal members 48 and 49 described above. Piston rod 43
Is provided with a rack portion 43b formed with a plurality of teeth that mesh with a pinion member 72 described later. A contact member 51 is connected to a rear end side of the piston rod 43 via a fitting member 53 fitted and fixed to the piston rod 43, and the proximity member 51 is provided on the outer periphery of the piston rod 43. By approaching 52, the rotational position of the piston rod 43 can be detected. Further, at the rear end of the piston rod 43, two abutting members 57 and 58 are arranged in the axial direction, and the two abutting members 57 and 58 are respectively arranged in two proximity 55 and 56 arranged in the axial direction of the piston rod 43. It is possible to approach. Thus, the axial movement position of the piston rod 43 can be detected.

The cylinder holding member 45 is a cylindrical member and is fixed to the frame FL of the tool magazine device 1. Further, hydraulic supply ports 45a and 45b are formed on the outer periphery of the cylinder holding member 45, and the communication paths 45c and 45d communicating with the supply ports 45a and 45b respectively correspond to the supply paths 42 of the cylinder member 42 described above.
a and 42b.

A sprocket member 47 having a plurality of teeth 47a with which a chain meshes is formed on the outer periphery of the seal member 48. The sprocket member 47 is fixed to one end surface of the cylinder member 42 by bolts. ing. Thereby, the seal member 48 is fixed to the cylinder member 42. The other end surface of the cylinder member 42 is fixed to a connecting member 62 which is a plate-like member by bolts.

The cam mechanism 61 includes a connecting member 62 and a bearing 7.
A gear 72 fitted and fixed to the rotating shaft 71 rotatably held via the third gear 3 and meshing with a rack portion 43b formed on the piston rod 43; a gear 72 fitted and fixed to the rotating shaft 71; The gear 7 fitted and fixed to a rotating shaft 75 rotatably held at 62 via bearings 77 and 78
6 and a flat groove cam member 79 fitted and fixed to the rotating shaft 75.

The cam mechanism 61 includes a flat groove cam member 7.
9, driven arms 65 and 67 respectively driven by cam grooves 79a and 79b formed on both side surfaces, and a linear motion rod 85 rotatably connected to one end of the driven arm 65.
And a moving member 9 movably held in a direction along the axis O.
6, two rod members 80 movably held in a direction perpendicular to the axis O, a connecting plate 100 connected to the tips of the two rod members 80, and a moving member fixed to the connecting plate 100. And a tool pot 101.

One end of the driven arm 65 is rotatably connected to a supporting member 63 to which the connecting member 62 is fixed via a connecting shaft 63a. The flat groove cam member 79 is formed from a disk-shaped member, and has a moving tool pot 10 on both sides.
Radial direction around one axis O (forward and backward directions)
And a cam groove 79a that regulates the movement of the moving tool pot 101 in the direction along the axis O (the direction in which the tool pot enters and exits). A cam groove 79 formed on one side of the flat groove cam member 79
A driven roller 66a rotatably provided on the connecting portion 65a of the driven arm 65 is fitted into b. The driven arm 65 has one end rotatably connected to the support member 63 by a connection shaft 63a, and a spherical connection portion 65b formed at the other end fixed to one end of the linear motion rod 85. It is rotatably connected to the member 86.

The linear motion rod 85 is movably held by a holding member 87 as shown in FIG.
A support member B for guiding the linear movement of the linear rod 85 is interposed between the linear rod 85 and the linear rod 85. The holding member 87 is fixed to a support member 97 having one end fixed to the connecting member 62. At the other end of the linear motion rod 85, a roller member 85a is provided rotatably.

As shown in FIG. 4, the moving tool pot 101 is connected to and held by a connecting plate 100. One end of each of two support rods 80 is connected and fixed to the connecting plate 100. The support rod 80 is provided so as to be movable in the forward and backward directions of the moving tool pot 101.
Is held in. Further, a connecting member 95 is fixed to the connecting plate 100 in a direction along the axis O. The connecting member 95 is formed with an engaging groove 95a in a predetermined range from one end. The roller member 85 a provided at the other end of the linear motion rod 85 is connected to the engagement groove 9 of the connecting member 95.
5a is movably fitted.

One end of the driven arm 67 is rotatably held by a support member 64 fixed to the connecting member 62 via a connecting shaft 64a. The driven arm 67 is substantially the same as the driven arm 67. A connecting portion 67a extending in a direction perpendicular to the direction is integrally formed. A driven roller 68 is rotatably provided on the connecting portion 67a.
Is a cam groove 79a formed on the side surface of the flat groove cam member 79.
Is fitted. A roller member 69 is rotatably provided at the other end of the driven arm 67.

At the other end of the support member 97, a connecting plate 89 is fixed so as to be parallel to the connecting member 62, and two connecting plates 89 and 62 are provided between the connecting plate 89 and the connecting member 62. The connecting rod 92 is fixed. The connecting rod 92
Each support mechanism 91 is fixed. Support mechanism 91
Has a movable member (not shown) that is movably held inside in a direction along the connecting rod 92. A holding member 81 for movably holding the support rod 80 is connected to the movable member, and the holding member 81 is movably supported in a direction along the connecting rod 92 (tool pot entry and detachment directions). I have. An engaging member 96 is connected to a movable member (not shown) of one of the support mechanisms 91, and the engaging member 96 is movably supported in a direction along the connecting rod 92 (tool pot entry and detachment directions). ing. The engaging member 96 is formed with an engaging groove 96a, and the roller member 69 of the driven arm 67 is movably fitted in the engaging groove 96a.

The moving tool pot 101 has a holding hole 101a for holding the tool T.
The rear end of the tool T is inserted into a. An engaging member 102 for opening the gripping claws 3a and 3b of the tool holder 3 is fixed to a side surface of the moving tool pot 101.

In the tool selection device 21 having the above structure, when the drive motor 112 of the drive mechanism 111 is driven, the sprocket member 114 is rotated, and the sprocket member 47 provided on the cylinder portion 41 is rotated via the chain member 115. . When the sprocket member 47 rotates, the cylinder member 42 to which the sprocket member 47 is fixed rotates. With the rotation of the cylinder member 42, the cylinder portion 41 and the cam mechanism portion 61 other than the cylinder holding member 45
Rotate about axis O. Therefore, the moving tool pot 101 turns around the axis O, and the drive 11
By controlling the rotation position 2, the moving tool pot 101 can be moved to an arbitrary rotation position.

When hydraulic pressure is supplied from the supply port 45a of the cylinder holding member 45 of the cylinder portion 41, the piston rod 43 moves in the direction of arrow A2 shown in FIG. When the piston rod 43 moves in the direction of arrow A2, the flat groove cam member 79 rotates in the direction of arrow B2. When the flat groove cam member 79 rotates in the direction of arrow B2, the driven arm 65
Rotates in the direction of arrow C2 according to the cam groove 79b formed in the flat groove cam member 79. When the driven arm 65 turns in the direction of arrow C2, the linear motion rod 85
It moves directly in the direction of 2. When the linear motion rod 85 moves linearly in the direction of arrow D2, the roller member 85a of the linear motion rod 85
As shown in FIG. 6, the moving tool pot 101 moves in the forward direction, that is, in the radial direction in which the tool holding unit 3 is provided, since it is engaged with the engaging groove 95 a of the connecting member 95. At this time, the support rod 80 held by the holding member 81 supported by the support mechanism 91 also extends in the direction of arrow D2. The cam groove 79b of the flat groove cam member 79 is formed such that when the moving tool pot 101 advances to a predetermined position, the moving tool pot 101 stops.

When the flat groove cam member 79 further rotates in the direction of arrow B2 from the state shown in FIG.
According to the cam groove 79a formed in the
7 starts turning in the direction of arrow E2 shown in FIG. When the driven arm 67 turns, the roller member 69 provided on the driven arm 67 engages with the engaging groove 69a of the engaging member 96, and the engaging member 96 moves in the direction of arrow F2 shown in FIG. Accordingly, the holding member 81 connected to the engaging member 96 via the movable member of the support mechanism 91 also moves in the direction of the arrow F2, and the support rod 80 moves.
Since the transfer tool pot 101 is connected to the support rod 80 via the connection plate 100, the transfer tool pot 101 also moves together with the support rod 80. On the other hand, the roller member 85a of the linear motion rod 85 is movably fitted in the engagement groove 95a of the connecting member 95, and even if the moving tool pot 101 moves in the direction of the arrow F2, the linear motion rod 8
5 does not move. Thereby, the moving tool pot 10
1 moves to a predetermined pot entry position as shown in FIG. When the piston rod 43 further strokes to the A2 side, the tool pot 101 performs a retreat operation.

In the same manner as the above-described forward operation, approach operation, and backward operation of the moving tool pot 101, the drive cylinder unit 4
1 is moved in the opposite direction to move the moving tool pot 10.
1, the forward operation, the separating operation, and the backward operation are performed.

FIG. 8 is an operation diagram showing an example of a tool changing operation of the tool magazine device 1 having the above configuration. In FIG. 8, the tool T held by the tool holding unit 3 located at the position Px of the tool magazine device 1 is currently mounted on the spindle device 501, and the tool T is held by the tool holding unit 3 located at the position Py on the spindle device 501. It is assumed that a tool T to be newly installed is held.

First, the moving tool pot 101 of the tool selecting device 21 is moved to the turning position PB corresponding to the position Py. Next, as shown in FIG. 9, from the turning position PB, the cylinder portion 41 of the tool selecting device 21 is driven to move the tool pot 101 for movement by the gripping claws 3a and 3b of the tool holding portion 3 at the position Py. Move forward to a predetermined position behind T. From this state, the moving tool pot 10
When the tool 1 enters the tool T, the moving tool pot 1
The rear end of the tool T is inserted into the insertion hole 101a.
Simultaneously with this operation, the engaging member 102 provided on the side surface of the moving tool pot 101 and having a tapered tip comes into contact with the engaged member 301 provided for the tool holding portion 3. The engaged member 301 is rotatably attached to the frame of the tool magazine device 1 by a connecting shaft 301a, and is normally held by the gripping claws 3a and 3
and the gripping claws 3a and 3b are closed. The contact portion 3 on the projection formed on the engaged member 301
01b, the engaging member 102 comes into contact with the engaged member 301.
Is tilted in the direction of the arrow, the engaged member 301 and the gripper 3
a and 3b are released, and the gripping claws 3a and 3b are released.
b is opened.

The tool T is released from being held by the holding claws 3a and 3b, and is inserted into the insertion hole 101 of the moving tool pot 101.
a. From this state, the moving tool pot 101 is retracted in the radial direction, and then moved to the turning position corresponding to the tool changing position PT.
Is turned to advance the tool change position PT. At the tool changing position PT, the tool T held in the moving tool pot 101 is moved from the moving tool pot 101 to the tool changing arm 2.
The tool T mounted on the spindle device 501 held by the other holding portion 205b of the tool changing arm 201 is pulled out by the one holding portion 205a of the tool changing arm 201 and is mounted on the moving tool pot 101 instead.

The moving tool pot 101 retreats in the radial direction, and then turns to a turning position corresponding to the tool holding unit 3 at the position Px. Transfer tool pot 10
1 moves forward with respect to the tool holding unit 3 located at the position Px. When the moving tool pot 101 moves forward with respect to the tool holding portion 3 at the position Px, as shown in FIG. 10, the engaging member 102 of the moving tool pot 101 is engaged from the tapered tip. The contact portion 30 of the joining member 301
1b, the engaged member 301 is inclined and the gripping claw 3a
And 3b are in the open state, and the tool T mounted on the moving tool pot 101 is in a state of being sandwiched between the grip claws 3a and 3b.

In this state, when the moving tool pot 101 is moved in the disengaging direction, the contact state between the engaged member 301 and the engaging member 102 of the moving tool pot 101 is released, and the tool T is released from the gripper. It is gripped by 3a and 3b. At the same time, the tool T grasped by the grasping claws 3a and 3b is pulled out of the insertion hole 101a of the moving tool pot 101 by moving the moving tool pot 101 in the detaching direction. The moving tool pot 101 retreats and turns to a position corresponding to the tool holding unit 3 for holding the next tool T to be replaced.

As described above, in the tool magazine device according to this embodiment, the moving tool pot 101 is swung, moved forward and backward, moved in and out of the plurality of tool holders 3, and the tool T is moved. Transfer between the tool holder 3 and the moving tool pot 101, and the moving tool pot 1
01 is moved to the tool change position PT. For this reason, since only the moving tool pot 101 is moved, the moving tool pot 101 can be operated at high speed, and the tool change time can be shortened. Further, according to the present embodiment, the tool T can be transferred between the tool holding unit 3 and the moving tool pot 101 by moving the moving tool pot 101, and the tool T is mounted on the moving tool pot 101. Since the tool T can be directly changed by the tool change arm 201, the apparatus configuration can be simplified and the cost can be reduced. Furthermore, according to the present embodiment, it is not necessary to rotate only the moving tool pot 101 and simultaneously rotate the plurality of tool holders 3, so that the occurrence of vibration can be minimized. Further, according to the present embodiment, the forward and backward movements, the entry and the withdrawal operations of the moving tool pot 101 are performed in cooperation with each other by the cam mechanism 61, so that the operation of the moving tool pot 101 can be smoothly and speeded up. Can be. Furthermore, if the cam grooves 79a and 79b of the flat groove cam member 79 are formed so that the forward and backward operations of the moving tool pot 101 and the entering and leaving operations partially overlap, the tool change time is further reduced. be able to.

[0040]

According to the present invention, the tool change time between the tool magazine device and the spindle device can be reduced. Further, according to the present invention, it is possible to minimize the vibration generated in the tool magazine device.

[Brief description of the drawings]

FIG. 1 is a front view showing a configuration of a tool magazine device according to an embodiment of the present invention.

FIG. 2 is a top view of the tool magazine device of FIG.

FIG. 3 is a cross-sectional view in a direction along an axis O of a tool selection device 21 according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view in a direction orthogonal to an axis O of a tool selection device 21 according to an embodiment of the present invention.

FIG. 5 is a side view of the tool selection device 21 according to the embodiment of the present invention as viewed from a direction orthogonal to the axis O.

FIG. 6 is a view for explaining an operation of the tool selection device 21 according to the embodiment of the present invention, and is a view showing a state in which a tool pot is advanced in a radial direction.

FIG. 7 is a diagram for explaining an operation of the tool selection device 21 according to the embodiment of the present invention, and is a diagram illustrating a state where the tool pot is moved in the approach direction.

FIG. 8 is an operation diagram showing an example of a tool changing operation of the tool magazine device according to one embodiment of the present invention.

FIG. 9 shows a tool held by a tool holding unit and a tool selection device 2
It is a figure for explaining the operation | movement which transfers to 1st tool pot for movement.

FIG. 10 is a diagram for explaining an operation of transferring the tool T from the moving tool pot to the tool holding unit of the tool selection device 21.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tool magazine apparatus 3 ... Tool holding part 21 ... Tool selection apparatus 41 ... Cylinder part 61 ... Cam mechanism part 101 ... Moving tool pot 111 ... Drive mechanism part 201 ... Tool exchange arm 501 ... Spindle device

Claims (5)

[Claims] 1. A tool magazine device which holds a plurality of tools mounted on a spindle device of a machine tool, and supplies and stores tools between the spindle device and the spindle device via a tool exchange arm. A plurality of first tool holding means arranged on a circumference and detachably holding the tool; a second tool holding means capable of detachably holding the tool; and the second tool holding means. Holding, between the first tool holding means selected from among the first tool holding means and the second tool holding means, causing the second tool holding means to perform a predetermined tool transfer operation, Tool selection means for moving the second tool holding means between a tool change position provided by the tool change arm provided in a non-placement area of the first tool holding means and the first tool holding means And a tool magazine device having: 2. The method according to claim 1, wherein the second tool holding means is located at a rotational position corresponding to the first tool holding means selected about a predetermined axis passing through the center of the circumference. A turning mechanism for turning, a radial moving mechanism for moving the second tool holding means in a radial direction of the circumference, and an axial movement for moving the second tool holding means in a direction along the predetermined axis. A predetermined tool transfer operation between the first tool holding unit and the second tool holding unit is performed by a cooperative operation of the radial moving mechanism and the axial moving mechanism. Item 2. The tool magazine device according to Item 1. 3. A cam mechanism for defining a predetermined tool transfer operation comprising the radial movement operation and the predetermined axial movement operation of the second tool holding means, the tool selection means comprising: The tool magazine device according to claim 2, further comprising a single drive source for driving the cam mechanism, wherein the radial movement mechanism and the axial movement mechanism are operated in cooperation. 4. The first tool holding means has an openable / closable gripping claw for gripping the tool moving from the radial direction in a direction along the predetermined axis. The means has a holding portion for holding the tool by entering the tool from behind and holding the tool, and the tool selecting means moves the second tool holding means in the radial direction to grip the tool. The tool is positioned at a predetermined position behind the first tool holding means, the holding portion of the second tool holding means is inserted into the tool, and the tool is moved in the radial direction with the holding portion holding the tool. Then, the tool is transferred from the first tool holding means to the second tool holding means, and the second tool holding means holding the tool in the holding portion is moved to a predetermined radial position to thereby perform the first The tool is held by the holding claws of the tool holding means of Claim the tool holding means is disengaged behind the corresponding tool transfer the tool to the second tool holding means from the second tool holding means 3
3. The tool magazine device according to 1. 5. The apparatus according to claim 4, wherein said second tool holding means has an opening means for opening a gripper of said first tool holding means when approaching said first tool holding means. The described tool magazine device.