JP2001225238A - Tool magazine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool magazine that is simple in tool pot structure and is low in manufacturing cost. SOLUTION: In a tool changing position, a roller 49 journaled via a shaft 48 to a lower arm 47a of a link 47 pushes up a lever portion 41b projecting from a base 41 of a tool pot 16 to turn the tool pot 16 smoothly from a tool storing position to a tool changing position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool storage device provided in a machine tool having an automatic tool changing function.

[0002]

2. Description of the Related Art Conventionally, a tool storage device provided in a machining center transfers a tool pot along a predetermined path, and transfers a tool pot transferred to a predetermined tool change position to a tool storage state or a tool change state. It is structured to rotate to a possible state.

Further, as such a tool storage device, for example, a device described in Japanese Patent Application Laid-Open No. H11-48076 is known. The tool storage device 201 described in Japanese Patent Application Laid-Open No. H11-48076 has a plurality of tool pots 210 as shown in FIG. 18, and the tool pot 210 is fixed to a magazine base 211 fixed to a machine tool body. The transfer mechanism 212 is mounted on a transfer mechanism 212 disposed inside the magazine base 211. The transfer mechanism 212 includes a pair of sprockets 213 and 21 rotatably disposed inside the magazine base 211.
4, an endless chain 216 bridged between the sprockets 213 and 214, a bracket 218 fixed to the outer peripheral side of the chain 216, and the like.

[0004] The plurality of tool pots 210 are
Each sprocket 213 is attached to the bracket 218 so that when one sprocket 213 is rotationally driven by a motor (not shown), the sprocket 213 is transferred along a path circulating with the chain 216.

The plurality of tool pots 210 are all rotatably mounted on the bracket 218. However, in most of the transfer path of the tool pot 210, the outer peripheral portion of the magazine base 211 is provided. Inner wall 21
1a is in contact with the tool pot 210. Therefore, the inner wall surface 211a restricts the rotation of the tool pot 210, and the tool pot 210 is maintained in a state where the tool T is directed to the front.

On the other hand, a slot 211b is formed at the lower end of the magazine base 211, and the tool pot 210 is formed only at the position where the slot 211b is formed (tool change position).
Is a state in which the tool T is directed downward from the storage state (FIG. 1).
8 (indicated by a two-dot chain line).
At the tool change position, a tilting mechanism (not shown) for rotating the tool pot 210 to a state in which the tool T is directed toward the front or a state in which the tool T is directed downward is provided.

In such a conventional tool storage device 201, a roller is provided at the rear end of the tool pot 210 with which the tilting mechanism contacts, so that the tilting mechanism can smoothly rotate the tool pot 210. Was.

[0008]

However, in the above-described structure in which rollers are provided at the rear end portion, it is necessary to provide a roller for each rear end portion of a large number of tool pots, and the structure of the tool pot is complicated. However, there is a problem that the manufacturing process is complicated and the manufacturing cost is increased.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a tool storage device capable of simplifying the structure of a tool pot and suppressing manufacturing costs.

[0010]

According to a first aspect of the present invention, there is provided a tool storage device, comprising: a tool pot which removably holds a tool; A pot holder rotatably supported between the tool holder and a tool exchange position, transfer means for transferring the pot holder along a predetermined path including a predetermined tool exchange position, and a transfer unit provided at a base of the tool pot. And a tool pot turning means for abutting on the projecting part at the tool changing position and turning the tool pot to a position in a tool changing state, wherein the tool pot turning means includes: A roller is provided at a position in contact with the projection.

In the tool storage device having this configuration, when the transfer means transfers the pot holder rotatably supporting the tool pot to the tool changing position, the roller of the tool pot rotating means changes the tool pot. The tool pot is rotated to a position where the tool is exchanged by contacting the convex portion provided on the base of the tool pot.

Further, the tool storage device according to claim 2 is
In addition to the configuration of the invention according to claim 1, the tool pot rotating unit rotatably holds the roller at one end,
The push rod is connected to the other end, and the center is further supported by a support shaft.

In the tool storage device having this configuration, in addition to the function of the tool storage device according to the first aspect, the pot holder holding member includes a tool pot rotation unit that enables the roller to rotate at one end. The push rod is connected to the other end, and the center is simply supported by the support shaft. Therefore, the structure is simple, the production is easy, and the production cost can be suppressed.

Further, in the tool storage device according to a third aspect of the present invention, in addition to the configuration according to the second aspect of the present invention, the urging for urging the tool pot to the storage position may be performed on the pot holder. Means for rotating the tool pot by means of the operation of the push rod. The tool pot rotating means rotates about the support shaft as a rotation center to bring the roller into contact with the convex portion. The tool pot is rotated from the position where the tool is stored to the position where the tool is exchanged against the tool pot.

In the tool storage device having this configuration, in addition to the operation of the tool storage device according to the second aspect, the pot holder is provided with biasing means for biasing the tool pot to the retracted position. In the retracted state, the urging force is acting on the tool pot, but the tool pot rotating means rotates about the support shaft by the operation of the push rod,
The roller can be brought into contact with the convex portion, and the tool pot can be turned from the retracted position of the tool to the exchanged position of the tool against the urging force of the urging means. Accordingly, since the tool pot rotating means has the roller at one end, the convex portion of the tool pot can be pushed up smoothly.

[0016]

[0017]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a machining center 1 which is a type of machine tool to which a tool magazine 10 as a tool storage device according to an embodiment of the present invention is mounted, and FIG. 2 is a right side view of the machining center 1. .

A door 2 is provided in front of the machining center 1 shown in FIG. 1, and a door 3 for taking in and out a workpiece (not shown) is provided on the right side of the machining center 1 shown in FIG. , 4 are provided. Further, the machining center 1 is provided with a door (not shown) for attaching and detaching tools to and from the tool magazine 10. Note that the tool magazine 10 according to the embodiment of the present invention is provided inside the doors 3 and 4.

Next, a tool magazine 10 according to an embodiment of the present invention will be described with reference to FIGS. FIG.
FIG. 4 is a front view of the tool changing device 5 with the tool magazine 10 mounted thereon, FIG. 4 is a left side view of the tool changing device 5 with the tool magazine 10 mounted thereon, and FIG. FIG. 6 is a front view showing a state where the tool magazine 10 is removed, and FIG.
FIG. 6 is a left side view of the tool changing device 5 showing a state where the tool 6 has been turned to a tool changing state. In addition, the tool changing device 5 is a
2 is provided inside the machining center 1 shown in FIG.

As shown in FIG. 3, the tool changing device 5 includes:
A frame 6 is provided, and a tool exchange arm 11 for exchanging tools between a tool magazine 10 and a spindle (not shown) is provided below the frame 6. A cam motor 12 for turning and vertically moving the tool changing arm 11 is provided above the tool changing device 5. A magazine motor 13 for driving the tool magazine 10 and an actuator 14 for vertically moving a push rod 31, which will be described later, are provided above the tool changer 5.

The tool change arm 11 is held by the tool pot 16 which has been rotated to the position at the lowermost end of the tool magazine 10 (hereinafter referred to as "tool change position") at a position drawn by a solid line. Tool and a tool fitted on a spindle (not shown), and then lowered to a position drawn by a two-dot chain line, and held by the tool pot 16 and a spindle (not shown). Pull out. Thereafter, the tool is rotated by 180 degrees, rises to the position drawn by the solid line, fits the tool on the main shaft, and holds the tool pulled out from the main shaft in the tool pot 16. An example of the tool includes a tool T shown in FIG.

Next, the tool magazine 10 will be described. A tool magazine 10 is provided at the center of the tool changing device 5. The tool magazine 10 radially secures 26 pot holders 17 that support a tool pot 16 for detachably holding a tool on the surface of a circular base plate 15 made of a metal such as steel having a predetermined thickness and bolts. are doing. The number of the pot holders 17 fixed to the surface of the base plate 15 is not limited to 26, and it goes without saying that any number can be fixed as long as the number can be fixed to the surface of the base plate 15.

A circular through hole 18 is provided at the center of the base plate 15. The through hole 18 is fitted on the worm shaft 19 of the tool changing device 5, and four bolts are sandwiched between the fixing ring 20. 21 fixed. The worm shaft 19 is configured to be rotated by the driving force of the magazine motor 13 via a worm gear 26 and a worm shaft gear 27, which will be described later.

Next, the details of the structures of the tool changer 5 and the tool magazine 10 will be described with reference to FIGS.
FIG. 4 is a left side view of the tool changing device 5, but a part of the tool changing device 5 is a sectional view for easy understanding of the structure. FIG. 5 is a front view showing a state where the tool magazine 10 and a worm shaft cover 33 described later are removed from the tool changing device 5.

As shown in FIG. 4 and FIG. 5, a magazine motor base 22
Is provided, and the magazine motor 13 is fixed to the magazine motor base 22. In addition, the magazine motor 1
A joint 23 is fixed to the rotation shaft 3, a rotation shaft 24 is fixed to the joint 23, and a gear shaft 25 is fixed to the rotation shaft 24. The gear shaft 25 is rotatably supported by ball bearing bearings 34 and 35, and a worm gear 26 is fixed to the gear shaft 25 at an intermediate portion between the ball bearing bearing 34 and the ball bearing bearing 35. .

The worm gear 26 meshes with a worm shaft gear 27 shown in FIG. Worm shaft gear 27
Is fixed to the worm shaft 19 and the worm gear 2
By rotating the worm shaft 6, the worm shaft gear 27 is rotated, the worm shaft 19 is rotated, and the tool magazine 10 fixed to the worm shaft 19 is rotated. A worm shaft gear wall 29 having four bolt holes 30 is provided around the worm shaft gear 27, and a worm shaft cover 33 shown in FIG. Have been.

In FIG. 5, the magazine motor 13
An actuator 14 is provided on the right side of the frame. A push rod 31 extends downward from the actuator 14. The push rod 31 penetrates the back side of the worm shaft 19 and is provided at a lower portion of the frame 6. Connected link mechanism 32. This link mechanism 32
As shown in FIG. 4, the opening of the tool pot 16 stopped at the tool change position is directed obliquely downward to the right (hereinafter referred to as “tool storage state”), and the tool moved to the tool change position. A function of rotating the tool pot 16 with respect to the pot holder 17 between a state in which the opening of the pot 16 faces directly downward as shown in FIG. 6 (hereinafter, referred to as a “tool exchange state”). Do.

Next, the tool magazine 10 will be described with reference to FIGS. FIG. 7 shows a tool magazine 1
0 is a front view, FIG. 8 is a cross-sectional view of the tool magazine 10 taken along the line AA ′ in FIG. 7, and FIG.
Pot holder 17 that rotatably holds tool pot 16
FIG. 10 is a front view of a pot holder 17 that rotatably holds a tool pot 16, and FIG.
Is a left side view of the pot holder 17 which holds the tool pot 16 so as to be rotatable.

As shown in FIG. 7, the tool magazine 10
A plurality of radially arranged pot holders 17 rotatably supporting a tool pot 16 on the surface of a base plate 15 having a predetermined thickness and made of a metal disk such as steel having a through hole 18 in the center. It is configured to be fixed by bolts. In the example shown in FIG. 7, 26 pot holders 17 are provided. However, the number is not limited to 26, and any number can be provided as long as the number can be fixed to the surface of the base plate 15.

As shown in FIG. 8, a tool pot 16 is supported by a shaft 37 on a pot holder 17 fixed to a base plate 15 by bolts 36.
A coil spring 38 is stretched between the tip end of the tool holder 6 and the pot holder 17, and applies a biasing force in the direction of arrow B to the upper tool pot 16 shown in FIG. 8, for example. Note that the inclined state of the tool pot 16 shown in FIG. 8 is a stored state of the tool.

Next, the structures of the tool pot 16 and the pot holder 17 will be described in detail with reference to FIGS. As shown in FIG. 9 to FIG.
Is a frame having a substantially U-shaped cross section formed by bending an iron plate, and includes a bottom surface 17a, a side wall 17b, and a side wall 17c, and a cutout portion 17d is formed on the side wall 17c side.
On the bottom surface 17a, three bolt holes 17f and two positioning projections 17e are formed. Also, the side wall 1
7b is provided with a spring hole 17g, and a side wall 17c is also provided.
A spring hole 17h is provided. Further, a shaft 37 is provided between the side wall 17b and the side wall 17c of the pot holder 17, and the tool pot 16 is rotatably supported by the shaft 37. The base plate 15 has a hole (not shown) into which the positioning protrusion 17e is inserted.

The pot holder 17 has a notch 17
Since d is provided, when the pot holder 17 is radially mounted on the base plate 15, the width of the bottom surface 17a of the pot holder 17 on the center direction side of the base plate 15 becomes narrower, so that the mounting pitch of the pot holder 17 is reduced. More pot holders 17
It can be fixed to the base plate 15.

Next, the tool pot 16 will be described.
As shown in FIGS. 10 and 11, the tool pot 16 includes:
An insertion hole 16a for fitting a tool is provided.
A steel ball 40 for holding a tool is provided at three locations in the back of the steel ball. The steel ball 40 is urged by a spring (not shown) so as to be able to retreat to the inner surface of the insertion hole 16a.

The tool pot 16 has an arm-shaped base 4.
Two bearings 1 are provided in parallel, and a bearing 41 a is provided at the tip of the base 41. The bearing 41 a is rotatably supported by a shaft 37. Further, the bearing portion 4 of the base 41
From the portion 1a, approximately 7
A lever portion 41b, which is a first convex portion, is protruded at an angle of 0 degrees. The lever portion 41b has a plate shape, but is not necessarily limited to the plate shape. Further, on the side surface of each base portion 41, a convex portion 41c as a second convex portion is provided so as to project outward.

FIG. 1 shows the structure of the base 41 near the bearing 41a.
This will be described with reference to FIG. FIG. 12 is a cross-sectional view of FIG.
It is sectional drawing of the arrow direction of C 'line.

As shown in FIG. 12, a shaft 37 penetrates into the bearing portion 41a, and the shaft 37 is connected to the side walls 17b and 17c.
Is held by Therefore, the base portion 41 is
1a rotatably supports the shaft 37 around the shaft 37.

As shown in FIGS. 10 and 11, a spring engaging portion 16b is provided at the tip of the tool pot 16 so as to protrude therefrom. Between the spring engaging portion 16b and the spring holes 17g, 17g, there are provided: Each of the coil springs 38 is stretched and urges the tool pot 16 in the direction of arrow C shown in FIG. 10. However, since the convex portion 41 c is provided on the side surface of the base portion 41,
Even if the tool pot 16 rotates in the direction of arrow C shown in FIG.
It does not rotate beyond the position where it comes into contact with each of 7b and 17c.

Next, referring to FIG. 4, FIG. 5 and FIG.
The worm shaft cover 33 will be described. FIG. 13 is a front view of the worm shaft cover 33.

As shown in FIG. 4, the worm shaft cover 33
Are fixed to the back side of the tool magazine 10. As shown in FIG. 13, the worm shaft cover 33 is a circular metal plate having a predetermined thickness, such as steel, and has a circular opening 33a in the center and a cutout 33b formed in the lower part. And four bolt holes 33c surrounding the opening 33a.
Are formed. The worm shaft cover 33 is fixed to the worm shaft gear wall 29 shown in FIGS.

The worm shaft cover 33 is provided to prevent the tool pot 16 from rotating in the direction of arrow F shown in FIG. 10 due to centrifugal force acting on a tool (not shown) when the tool magazine 10 is rotated. When the tool pot 16 rotates in the direction of arrow F shown in FIG. 10 due to centrifugal force, the lever portion 41 b
Can be prevented from further rotating in the direction of arrow F. Further, since the notch 33b is formed in the lower portion of the worm shaft cover 33, the tool pot 16 moving to the tool changing position is
b can rotate without contacting the outer edge of the worm shaft cover 33.

Next, the structure of the link mechanism 32 will be described with reference to FIGS. FIG. 14 shows the link mechanism 32.
15 is a sectional view taken along line BB 'in FIG.

The link mechanism 32 fixes the link base 43 having the side walls 43a and 43b to the frame 6, and
A shaft 44 is erected between the 3a and the side wall 43b, and the link 47 is rotatably supported by the shaft 44. Further, a through hole 43c is provided in an upper portion of the link base 43.
The through-hole 43 c is formed by a U-shaped recess and the frame 6. The push rod 31 penetrates through the through hole 43c, and a mover 45 is fixed to the lower end of the push rod 31.
Along with the up and down movement of No. 1, in the link base 43,
It can be moved up and down in FIGS. 14 and 15. The mover 45 is provided with a shaft 46, and the mover 45 and the link 47 are connected by the shaft 46.

As shown in FIGS. 14 and 15, the link 47 comprises a pair of left and right lower arms 47a and 47b, a pair of left and right upper arms 47c and 47d, and a bearing 47e. The shaft 47 passes through the bearing portion 47e, and the link 47 is rotatably supported between a position indicated by a solid line and a position indicated by a two-dot chain line in FIG.

Accordingly, when the push rod 31 is lowered, the mover 45 is lowered to the position shown by the two-dot chain line in FIG. 15, and the upper arms 47c and 47d connected to the mover 45 by the shaft 46 are lowered. , The link 47 is a shaft 44
Around the lower arm 47a, 47b, as shown in FIG.
It rises to the position shown by the two-dot chain line in FIG.

The lower arms 47a, 4 of the link 47
A roller 49 rotatably supported by a shaft 48 is provided at the tip of 7b. When the roller 49 pushes up the lever portion 41b of the tool pot 16,
The tool pot 16 pivotally supported by the pot holder 17 in the stored state of the tool can be rotated to a tool exchange state as shown in FIG.

The link 47 is connected to the lower arm 47
Since the rollers 49 rotatably supported by the shaft 48 are provided at the distal ends of the a and 47b, when the lever 41b of the tool pot 16 is pushed up, the lever 41b can be pushed up smoothly. Further, since the rollers 49 are provided at the distal ends of the lower arms 47a and 47b of the link 47,
There is no need to provide rollers.

Next, the operation of the tool changer 5 having the tool magazine 10 according to the present embodiment will be described with reference to FIGS. FIG. 16 is a reference diagram illustrating the operation of the tool magazine 10, and FIG. 17 is a diagram illustrating the operation of the link 47.

When the tool magazine 10 is rotated for tool change, as shown in FIG.
When the magazine motor 13 rotates in a state where the tools are stored, the worm gear 26 of the gear shaft 25 rotates,
The worm shaft gear 27 meshing with the worm gear 26 rotates, and the worm shaft 19 rotates. Therefore, the worm shaft 1
The base plate 15 fixed to 9 rotates. At this time, although not particularly shown, various tools are held in each tool pot 16. For example, various types of milling machines, such as drills, taps, end mills, etc., having different diameters, lengths, and weights are randomly held.

When the base plate 15 rotates, a centrifugal force corresponding to the weight is generated in these tools, so that a component force in the direction of arrow G shown in FIG. Attempts to rotate in the G direction. At this time, the lever portion 41 b protruding from the base portion 41 of the tool pot 16 contacts the outer edge 33 d of the worm shaft cover 33. Therefore, the tool pot 16 does not rotate in the direction of arrow G. Therefore, it is possible to prevent the tool held in the tool pot 16 from falling off due to the unintended rotation of the tool pot 16 in the direction of arrow G.

Since the notch 33b is provided at the lower end of the worm shaft cover 33, the worm shaft cover 33 does not hinder the operation of the link 47 at the tool change position.

Further, as shown in FIG. 17, in order to rotate the tool pot 16 from the stored state of the tool to the changed state of the tool at the tool changing position, the lower arm 4 of the link 47 is required.
Rollers 49, which are supported by shafts 48 on 7a and 47b,
Lever part 4 projecting from base 41 of tool pot 16
Since the tool pot 16 is merely pushed up, the tool pot 16 can be smoothly rotated from the stored state of the tool to the changed state of the tool.

Further, since the lever portion 41b projecting from the base portion 41 of the tool pot 16 is not provided with a roller or the like, the structure of the tool pot 16 is simplified, the manufacturing is easy, and the manufacturing cost is suppressed. can do.

In the above embodiment, the worm shaft cover 33 is made of a circular metal plate such as steel having a predetermined thickness. However, the worm shaft cover 33 is not necessarily limited to a plate-like material. Lever part 41b protruding from base 41
It is needless to say that various structures can be used as long as the tool pot 16 can restrict the unintended rotation of the tool pot 16 in contact with the tool pot 16. For example, a ring may be made of a pipe, and the ring may be fixed to the worm shaft gear wall 29 by a holding member.

[0054]

As described above, in the tool storage device according to the first aspect of the present invention, when the pot holder rotatably supporting the tool pot is transferred to the tool changing position by the transfer means. The roller of the tool pot rotating means abuts on a convex portion provided at the base of the tool pot, so that the tool pot can be smoothly rotated to a position where the tool is changed. In addition, the convex portion provided at the base of the tool pot has
Since the rollers are not individually provided, the structure of the tool pot is simplified, the manufacturing is easy, and the manufacturing cost can be suppressed.

Further, the tool storage device according to claim 2 is
In addition to the effect of the invention according to claim 1, the pot holder holding member is configured such that the tool pot rotating means rotatably holds the roller at one end, and a push rod is connected to the other end, Furthermore, since the center is only supported by the support shaft, the structure is simple, the manufacturing is easy, and the manufacturing cost can be suppressed.

Further, in the tool storage device according to the third aspect, in addition to the effect of the second aspect, the pot holder is provided with an urging means for urging the tool pot to the retracted position. Therefore, the urging force acts on the tool pot when in the retracted state, but the tool pot rotating means rotates about the support shaft by the operation of the push rod, and the roller rotates in the convex portion. , And the tool pot can be turned from the position where the tool is stored to the position where the tool is exchanged against the urging force of the urging means. Accordingly, since the tool pot rotating means has the roller at one end, the convex portion of the tool pot can be pushed up smoothly.

[Brief description of the drawings]

FIG. 1 is a front view of a machining center 1 which is a type of machine tool to which a tool storage device according to an embodiment of the present invention is mounted.

FIG. 2 is a right side view of the machining center 1. FIG.

FIG. 3 is a front view of the tool changing device 5 on which the tool magazine 10 is mounted.

FIG. 4 is a left side view of the tool changing device 5 in which the tool magazine 10 is mounted.

FIG. 5 is a view showing a tool magazine 10 from a tool changer 5;
It is a front view in the state where it was removed.

FIG. 6 is a left side view of the tool changing device 5 showing a state where the tool pot 16 at the lowermost end of the tool magazine 10 is rotated to a tool changing state.

FIG. 7 is a front view of the tool magazine 10;

8 is a cross-sectional view of the tool magazine 10 taken along line AA 'in FIG.

FIG. 9 is a plan view of a pot holder 17 that holds a tool pot 16 in a rotatable manner.

FIG. 10 is a front view of a pot holder 17 that holds a tool pot 16 in a rotatable manner.

FIG. 11 is a left side view of the pot holder 17 that holds the tool pot 16 in a rotatable manner.

FIG. 12 is a cross-sectional view taken along line CC ′ shown in FIG. 10;

FIG. 13 is a front view of the worm shaft cover 33.

FIG. 14 is a front view of the link mechanism 32.

FIG. 15 is a sectional view taken along line BB ′ of FIG. 14 in the direction of the arrows.

FIG. 16 is a reference diagram for explaining the operation of the tool magazine 10;

FIG. 17 is a diagram illustrating an operation of a link 47;

FIG. 18 is a front view of a conventional tool storage device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machining center 5 Tool changer 6 Frame 10 Tool magazine 11 Tool change arm 12 Cam motor 13 Magazine motor 14 Actuator 15 Base plate 16 Tool pot 17 Pot holder 18 Through hole 19 Worm axis 20 Fixing ring 21 Bolt 22 Magazine motor base 23 Joint 24 Rotation axis Reference Signs List 25 gear shaft 26 worm gear 27 worm shaft gear 29 worm shaft gear wall 30 bolt hole 33 worm shaft cover 31 push rod 32 link mechanism 33 worm shaft cover 33a opening 33b notch 33c bolt hole 34, 35 ball bearing bearing 36 bolt 37 shaft 38 Coil spring 17a Bottom surface 17b, 17c Side wall 17d Notch 17e Alignment projection 17f Bolt hole 17g Spring hole 16a Insertion hole 4 0 Steel ball 41 Base 41a Bearing 41b Lever 43 Link base 43a Side wall 43b Side wall 43c Through hole 44 Axis 45 Mover 46 Axis 47 Link 47a, 47b Lower arm 47c, 47d Upper arm 47e Bearing 48 axis

Claims (3)

[Claims] 1. A tool pot which detachably holds a tool, a pot holder which rotatably supports the tool pot between a position where the tool is stored and a position where the tool is exchanged, and the pot Transfer means for transferring the holder along a predetermined path including a predetermined tool change position, a convex portion provided at the base of the tool pot, and abutting on the convex portion at the tool change position, and the tool pot is A tool pot rotating means for rotating to a position in an exchange state, wherein the tool pot rotating means is provided with a roller at a position in contact with the convex portion. 2. The tool pot rotating means, wherein the roller is rotatably held at one end, a push rod is connected to the other end, and a center portion is supported by a support shaft. The tool storage device according to claim 1, wherein: 3. The pot holder is provided with biasing means for biasing the tool pot to the retracted position, and the tool pot rotating means rotates the support shaft by the operation of the push rod. The tool pot is rotated as a center of motion, and the roller is brought into contact with the convex portion, and the tool pot is rotated from the retracted position of the tool to the position of the tool exchange state against the urging force of the urging means. The tool storage device according to claim 2, wherein the tool storage device moves.