JPH0722785B2 - Punch press tool changer - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a tool exchanging device for automatically exchanging tools for a punch press, and more specifically, it is preliminarily attached to a tool attaching portion of the punch press. Tool exchanging arm for exclusive use for removing the stored tool and storing it in the tool magazine, and second tool for exclusive use for removing the tool from the tool magazine and mounting it on the tool mounting part of the punch press A tool changing device including a changing arm.

[Technical Background of the Invention and Problems Thereof] Generally, a punch press is used for punching various shapes on a plate-shaped workpiece. In order to punch various shapes, the punch press is
A turret punch press of the type in which a pair of tools consisting of a punch and a die are mounted on the upper and lower turrets, and a tool magazine accommodating a large number of a pair of tools consisting of a punch and a die are provided in close proximity, and automatic tool change is performed. There is a punch press of a type in which a tool consisting of a punch and a die is automatically changed by an apparatus.

In the turret punch press, the tool can be exchanged only by turning the turret, so that the time required for the tool exchange is reduced and the work efficiency is improved. But,
In a punch press of a type in which a tool consisting of a punch and a die is replaced by an automatic tool changer, it takes a lot of time to replace the tool, which is a problem.

In the prior art, first, a tool consisting of a punch and a die, which is previously mounted on a punch press, is removed by an automatic tool changer, the removed tool is stored in a tool magazine, and then the tool magazine indexes the next tool. Waiting until Then, when the tool is indexed, the tool changer takes out the tool from the tool magazine and mounts it on the punch press. That is, conventionally, the steps of removing the tool from the punch press and storing it in the tool magazine, and removing the tool from the tool magazine and mounting it on the punch press are performed by one arm such as a robot arm. Because it is
It took a lot of time to change tools.

[Object of the Invention] The present invention has been made in view of the conventional problems as described above, and an object of the present invention is to provide a tool changer capable of quickly changing tools for a punch press.

SUMMARY OF THE INVENTION In view of the conventional problems as described above, the present invention is a dedicated removal tool for removing a pair of tools or dies including a punch and a die from a tool mounting portion in a punch press and storing them in a tool magazine. A first tool exchanging arm; and a second tool exchanging arm dedicated to mounting for taking out a pair of tools or dies, each of which comprises a punch and a die housed in the tool magazine, and mounting them on the tool mounting portion. The first and second tool exchanging arms are individually operably provided.

[Examples of the Invention] In the following examples, the case where the present invention is applied to a punch press is illustrated, but the present invention can be applied not only to a punch press but also to other machine tools. is there.

Referring to FIGS. 1 and 2, the punch press 1 is configured as a C-shaped frame including an upper frame 7 supported in a cantilever manner on a column portion 5 standing on one side of a base frame 3. I am doing it. In the throat portion 9 of the C-shaped frame, a sub column portion 11 is erected in the vicinity of the column portion 5, and the sub column portion 11 has a beam member 13 extending along the upper frame 7. Is cantilevered.

A punch holder 17 supporting a punch 15 is rotatably supported at the tip end of the beam member 13 so as to be vertically movable and rotatable, as will be described later. On the other side of the base frame 3 facing the holder 17, a die corresponding to the punch 15 is provided.
A die holder 21 that supports 19 is rotatably provided. In order to move the punch holder 17 up and down, a ram 23 is supported at the tip of the upper frame 7 so as to be vertically movable, and the ram 23 and the punch holder 17 are appropriately connected. The ram 23 is appropriately interlocked with an eccentric portion of an eccentric shaft 25 rotatably supported on the tip of the upper frame 7 via a connecting rod 27. The eccentric shaft 25
Are appropriately interlocked with a motor 29 mounted on the upper frame 7 via an appropriate clutch device 31. Since the configuration in which the ram 23 is moved up and down by the rotation of the motor 29 is a general configuration, a detailed description thereof will be omitted.

With the above configuration, the ram is driven by the motor 29.
By vertically moving 23, the punch holder 17 is vertically moved integrally. Therefore, it will be understood that by positioning the plate-shaped workpiece W between the punch 15 and the die 19, the workpiece W can be punched.

In order to move and position the workpiece W, the front side of the base frame 3 (left side in FIGS. 1 and 2).
A work movement positioning device 33 is arranged at the position.
The work moving / positioning device 33 includes the punch 15 and the die.
The workpiece W is moved and positioned in the X-axis and Y-axis directions with respect to the machining position by 19, and may be of a general configuration adopted in, for example, a turret punch press. Therefore, the detailed description of the configuration will be omitted. Further, the base frame 3 is provided with a conveyor device for carrying out a product or scrap processed by the punch 15 and the die 19 backward.
35 is provided, and the die 19 side of the conveyor device 35 is provided so as to move up and down by an appropriate actuating device (not shown) such as an air cylinder.

Therefore, the workpiece W is automatically determined by the punch 15 and the die 19 while the workpiece movement positioning device 33 automatically determines the movement of the workpiece W in the X-axis and Y-axis directions. Processing will be performed. It will be appreciated that the product or scrap produced in the above process may be automatically transferred backwards by the conveyor device 35.

Punch for the punch holder 17 and the die holder 21
15, the beam member 1 for attaching and detaching the die 19
A tool changing device 37 is attached to the tip end side of 3. In addition, in order to store the tools of many punches 15 and dies 19 for attachment / detachment and replacement, the beam member 13 has a disc-shaped tool magazine.
39 are provided. The tool magazine 39 is located above the path line along which the workpiece W is moved, and is supported by a rotary shaft 43 that is rotatably suspended from a bearing device 41 mounted on the beam member 13. Punch 15, die 19 as a set or die 1 in the tool magazine 39
A large number of tool holders 45 capable of holding only 9 are provided.

The tool magazine 39 is configured so that a desired tool holder 45 can be indexed to a predetermined position by being rotated by an appropriate motor (not shown). The tool holder 45 is configured such that when indexed to a predetermined position, the tool of the punch 15 and the die 19 can be received from the tool changing device 37 and the tool can be passed to the tool changing device 37 at a predetermined position. There is.

Therefore, by punching the desired tool holder 45 of the tool magazine 39 to a predetermined position and operating the tool changing device 37 appropriately, the punch holder 17, the punch 15, and the die 19 for the die holder 21 can be exchanged. It will be understood that

As shown in detail in FIG. 3, the punch holder 17 is rotatably and rotatably supported by a bearing housing 47 attached to the tip of the beam member 13. That is, in the bearing housing 47, a cylindrical hole spline housing 51 having a worm gear 49 at the outer peripheral center is provided.
Is rotatably supported by an appropriate number of bearings 53, and the punch holder 17 is rotatably supported in the ball spline housing 51 by a large number of balls. The punch holder 17 and the ball spline housing 51 are
A ball spline is formed via a ball, and the ball spline housing 51 and the punch holder 17 are integrally rotated. The worm gear 49 has a worm 55 rotated by a servo motor (not shown).
Are in mesh. Therefore, the punch holder 17 can be appropriately rotated by the servo motor.

In order to move the punch holder 17 up and down, the upper end of the punch holder 17 is connected to the ram 23. More specifically, the upper part of the punch holder 17 has a flange 57F at the upper end.
Is provided with a head member 57. A connecting bracket 61 having a shear plate 59 is attached to the lower end of the ram 23 via a plurality of bolts. The flange 57F of the head member 57 is laterally engaged with and disengaged from the connecting bracket 61. A possible T-slot 61T is formed. Therefore, it will be understood that the punch holder 17 moves up and down integrally with the up and down movement of the ram 23.

An appropriate punch lock device is provided below the punch holder 17 so that the punch 15 can be automatically attached to and detached from the punch holder 17. More specifically, the holder block 63 is integrally attached to the lower end portion of the punch holder 17 with a plurality of bolts, and the holder block 63 is attached upward from the flange portion 15F provided on the upper portion of the punch 15. A locking hole 65 is formed so that the protruding locking portion 15L can be received from below. As shown in FIG. 4, the locking hole 65 has a V-shaped portion 65V corresponding to the V-shaped abutting side surface 15S formed on the locking portion 15L of the punch 15 and a circular portion 65C. It is formed in a shape connected to the lower part.

A substantially cylindrical lock actuating member 67 is vertically movably fitted in the circular portion 65C of the locking hole 65. A hook member 69 capable of locking the locking portion 15L of the punch 15 is swingably supported via a pin 71 in the lock operating member 67. The pin 71 is supported by the holder block 63 through an elongated hole 67H formed in the lock actuating member 67 in the vertical direction. Therefore, the lock actuating member 67 can move up and down with respect to the hook member 69.

In order to lock the locking portion 15L of the punch 15, a lateral projection 15P formed on the upper end of the locking portion 15L and a disengageable projection 69P are formed at the lower end of the hook member 69. While being formed, an inclined surface portion 69S is formed on the opposite side of the protruding portion 69P. Further, near the upper end portion of the hook member 69, a pin 73 protruding in the same direction as the inclined surface portion 69S side is provided. In order to swing the hook member 69, an inclined surface portion 67S which can be engaged with and disengaged from the inclined surface portion 69S of the hook member 69 is formed at the inner lower end portion of the lock operating member 67, and the pin is provided on the upper side. A step portion 67ST is formed so as to be freely engaged with and disengaged from 73. In addition, the lock operating member 67 causes the locking portion 15 of the punch 15 to move.
A notch is formed at a position corresponding to L. Further, at the upper end of the lock operating member 67, a T groove portion 67T engaged with the lower end portion of the piston rod 77 in the fluid pressure cylinder 75 as a drive device for moving the lock operating member 67 up and down.
Are formed.

The fluid pressure cylinder 75 is provided in the punch holder 17, and a flange portion that engages with a T groove portion 67T is formed at the lower end portion of the piston rod 77 that is vertically movable. The fluid pressure cylinder 75 may be operated by a working fluid that is supplied and discharged through a flow passage 79 formed in the punch holder 17, and the flow passage 79 is relatively located in the head member 57. It is connected to a rotary joint member 81 mounted rotatably. Only the rotation of the rotary joint member 81 is blocked by the restriction member 85 engaging with the stopper 83 fixed to the connection bracket 61.

In the above structure, when the working fluid is supplied to the fluid pressure cylinder 75 via the rotary joint member 81 and the flow passage 79 to lower the lock operating member 67, the inclined surface 67S of the lock operating member 67 is lowered.
Comes into contact with the inclined surface portion 69S of the hook member 69, and the hook member 69
In FIG. 3, it is swung in the counterclockwise direction. Therefore, the protrusion 69P of the hook member 69 is
The punch 15 is fixed to the holder block 63 by pressing the locking portion 15L of the punch 15 to the V-shaped portion 65V of the locking hole 65 and pushing up the protruding portion 15P of the locking portion 15L upward. Will be done. Therefore, the punch 15 is fixed such that the upper surface of the flange portion 15F is in surface contact with the lower end surface of the holder block 63. Further, the holder block 63 receives the reaction force when the hook member 69 fixes the locking portion 15L of the punch 15 and the lateral component force that acts on the punch 15 at the time of nibbling, and the lock actuating member 67 is operated. It is possible to construct a comparatively compact structure without the need to construct a rigid structure.

Contrary to the above, when the piston rod 77 of the fluid pressure cylinder 75 is actuated in the upward direction, the step portion 67 of the lock actuating member 67 is activated.
It will be understood that the ST abuts the pin 73 and the hook member 67 is rotated clockwise in FIG. 3 to release the fixing of the punch 15 and allow the punch 15 to be taken out downward.

Further, referring to FIGS. 3 and 4, the holder block 63 is provided with a stripper holder 89 for supporting a stripper 87 surrounding the punch 15. The stripper holder 89 is formed in such a manner that an annular part thereof is cut open for inserting and removing the stripper 87, and the stripper holder 89 has a peripheral groove 87 formed on the peripheral surface of the stripper 87.
An arc-shaped support portion 89H that can be engaged with and disengaged from G is formed. Further, the stripper holder 89 is provided with an appropriate number of ball snaps 91 for holding the stripper 87. The stripper holder 89 is supported by a plurality of support pins 93 which are vertically movably supported by the holder block 63, and a strip like a coil spring is provided between the stripper holder 89 and the holder block 63. Ammo 95 is mounted.

Therefore, when the work piece W is punched by the punch 15, the work piece W is pressed by the stripper 87, and the punch 15 can be reliably withdrawn from the work piece W.

The die 19 can be attached to and detached from the die holder 21.
21 is performed by moving the die 19 horizontally with respect to the die 21, and the fixing of the die 19 to the die holder 21 may be the same as the conventional one. Therefore, the detailed configuration thereof will not be described. It will be omitted.

With reference to FIG. 6, the tool changing device 37 is provided with a first tool changing arm 97 and a second tool changing arm 99. The first tool changing arm 97 is for removing the punch 15, the die 19 and the stripper 87 from the punch holder 17 and the die holder 21 and storing them in the tool holder 45 of the tool magazine 39. Further, the second tool changing arm 99 is for taking out the punch 15, the die 19 and the stripper 87 housed in the tool holder 45 of the tool magazine 39 and mounting them on the punch holder 17, the die holder 21 and the stripper holder 89. belongs to. Above first,
As is apparent from FIG. 6, the second tool changing arms 97 and 99 are arranged with a phase difference of 90 °, and are individually operably provided.

Since the configuration of the first tool changing arm 97 and the configuration of the second tool changing arm 99 are symmetrical, the configuration of one of the first tool changing arms 97 will be described below. With respect to the second tool exchanging arm 99, the same members as those of the first tool exchanging arm 97 are designated by the same reference numerals, and the detailed description thereof will be omitted.

Referring to FIG. 5, a swing shaft 105 is rotatably supported by a bracket 101 attached to the beam member 13 (not shown in FIG. 5) via a bearing device 103. The swivel shaft 105 is rotated by an appropriate drive device (not shown), and swivels 90 ° and 180 ° in the forward and reverse rotation directions.

Referring to FIGS. 5 to 7, L-shaped support brackets 107U, 1 are provided on the upper and lower portions of the pivot shaft 105, respectively.
The center of 07D is fixed integrally with a key. A guide bar 109 for vertically guiding the first tool changing arm 97 is vertically supported on one end side of the upper and lower support brackets 107U and 107D. Separate guide bars 109 for vertically guiding the second tool changing arm 99 are vertically supported on the other end sides of the upper and lower support brackets 107U and 107D.

In order to move the first tool changing arm 97 up and down, an elevating block 111 is supported by a guide bar 109 so as to be movable up and down, and upward from a fluid pressure cylinder 113 provided integrally with the elevating block 111. The upper end portion of the piston rod 115 extending in the direction is connected to a connecting bracket 117 fixed to the upper support bracket 107U. Therefore, by appropriately operating the working fluid to the fluid pressure cylinder 113, the elevating block 111 moves up and down along the guide bar 109.

In order to reciprocate the first tool changing arm 97 in the horizontal direction, a horizontally extending rail supporting plate 119 is integrally provided on the elevating block 111.
A guide rail 121 is horizontally attached to 19. A slide block 123 is supported by the guide rail 121 for reciprocating movement itself, and the slide block 123 has a connecting plate 1
25 is attached integrally. In addition, the rail support plate 11
A fluid pressure cylinder 129 is supported by 9 through a T-shaped support bracket 127, and a tip end portion of a piston rod 131 provided reciprocally in the fluid pressure cylinder 129 is
It is connected to the connecting plate 125 via an appropriately bent connecting member 133.

Therefore, it will be understood that the connection plate 125 and the like can be reciprocated along the guide rail 121 by appropriately operating the fluid pressure cylinder 129.

A base portion of an arm plate 135 extending across the lower position of the guide rail 121 in a direction orthogonal to the guide plate 121 is integrally fixed to the connecting plate 125.
As shown in FIG. 8, the tip portion of the C is provided with an upper plate 137U and a lower plate 137D which are vertically opposed to each other.
A V-shaped arm bracket 137 is integrally attached. An upper finger 139 that can hold the punch 15 and a lower finger 141 that can hold the die 19 are supported by the arm bracket 137.

It will be understood from the above configuration that the upper and lower fingers 139 and 141 are moved forward and backward by the operation of the fluid pressure cylinder 129, and the punch 15 and the die 19 can be attached to and detached from the punch holder 17 and the die holder 21.

Referring to FIG. 8 to FIG. 10, the arm bracket 13
Two pivots 143A and 143B are vertically provided between the upper and lower plates 137U and 137D in 7 with appropriate intervals. The base of one die gripping member 145A of the lower finger 141 is pivotally supported on the lower part of one pivot 143A, and the base of the other die gripping member 145B is pivotally supported on the lower part of the other pivot 143B. The pair of die gripping members 145A, 145B
Are formed symmetrically, and each die gripping member 145A, 145B is
Coil springs 147 stretched between the two are urged in directions to close each other.

Each of the die gripping members 145A and 145B has a tip end portion having an engagement pin 149 that can be engaged and disengaged with one of a plurality of engagement holes 19H formed on the side surface of the die 19 at appropriate intervals in order to grip the die 19. And the groove formed on the peripheral surface of the die 19.
The engaging protrusions 151 that can be engaged with 19G are provided respectively.
Further, the die gripping members 145A and 145B are provided with the stripper 8
Stripper support portions 153 for supporting the stripper 7 are provided, and engaging protrusions 155 that are engageable with the circumferential groove 87G of the stripper 87 are formed.

With the above configuration, the die 1 is provided between the die gripping members 145A and 145B.
By moving 9 relatively, the coil spring 14
It will be understood that the die 19 can be gripped between the die gripping members 145A, 145B by the action of the engagement pin 149 and the engagement protrusion 151. Further, it will be understood that the die 19 can be easily detached by relatively drawing the die 19 from between the die gripping members 145A and 145B. further,
It will be appreciated that the stripper 87 may be releasably supported by both die gripping members 145A, 145B.

Referring again to FIGS. 8 and 10, the upper finger 13
9 is composed of a pair of symmetrically shaped punch gripping members 157A, 157B, and the bases of the punch gripping members 157A, 157B are pivotally supported by the pivot shafts 143A, 143B so as to be vertically movable. The punch gripping members 157A and 157B are urged in a direction to close each other by the action of a coil spring 159 stretched between them. Further, at the tip of each punch gripping member 157A, 157B, one engaging hole 15H formed separately from each other on the side surface of the flange portion 15F of the punch 15 and an engagement pin 161 which can be engaged and disengaged are provided. Has been. Further, each of the punch gripping members 157A, 157B is formed with an engagement protrusion 163 which is engageable with and disengageable from the groove 15G formed in the flange 15F of the punch 15.

With the above configuration, similarly to the die 19 can be gripped between the die gripping members 145A, 145B, each punch gripping member 157A, 1
It will be appreciated that the punch 15 may be gripped during 57B.

In order to move the respective punch gripping members 157A, 157B up and down in order to engage and disengage the locking portion 15L of the punch 15 with respect to the locking hole 65 of the holder block 63 provided at the lower end of the punch holder 17, Upper plate of arm bracket 137 1
A mini cylinder 165 is attached to 37U. This mini cylinder 165 has a piston rod 1 that can move up and down.
67 is located between both punch gripping members 157A and 157B. The piston rod 167 is attached to both punch gripping members 157A, 15
Both punch gripping members 15
A sufficiently large washer 169 is provided so that it does not come off even when 7A and 157B are opened.

With the above configuration, by appropriately operating the mini-cylinder 165, both punch gripping members 157A, 157B are connected to the pivots 143A, 143B.
It will be understood that you can move up and down guided by.

As will be understood, the first tool change arm 97 reciprocates horizontally, and the upper finger 139 of the first tool change arm 97 can be moved up and down with respect to the lower finger 141. The second tool changing arm 99 also operates similarly to the operation of the first tool changing arm 97. Further, by rotating the swivel shaft 105, the first and second tool exchanging arms 97 and 99 are simultaneously swung horizontally.

Referring to FIG. 11, FIG. 11 shows a tool exchanging process schematically showing the function of the tool exchanging device 37 having the above-mentioned configuration. That is, (1) in FIG.
The tool changing arms 97 and 99 are not gripping the punch 15 and the die 19. In the state (1), the first tool exchanging arm 97 has the same height in order to remove the punch and die attached to the tool attaching portion (shown by (P) in FIG. 11) of the punch press. To descend. Also, the second
The tool exchanging arm 99 is moved forward to take out the punch and the die mounted in the tool magazine (shown by (M) in FIG. 11). Therefore, the state changes to (2).

In the state (2), the upper finger 139 of the first tool exchanging arm 97 is raised to correspond to the height position of the punch attached to the punch press. Also, the second
The tool exchanging arm 99 takes out the punch and the die from the tool magazine and retracts. Therefore, the state changes to (3).

In the state of (3), the first tool change arm 97
Move forward to remove the punch and die attached to the punch press. The second tool change arm 99 is waiting,
The state changes to (4).

In the state of (4), after the fixing of the punch and die attached to the punch press is released, the upper finger of the first tool changing arm 97 is moved to lower the punch.
139 is lowered, and the state changes to (5). The second tool change arm 99 is on standby.

In the state of (5), the first tool exchanging arm 97 is retracted to remove the punch and die, and the state changes to the state of (6). The second tool change arm 99 is on standby.

In the state of (6), the first tool exchanging arm 97 is raised to its original position to perform the turning, and the state is changed to the state of (7). The second tool change arm 99 is on standby.

In the state of (7), 90 ° is swung, the second tool changing arm 99 corresponds to the tool mounting portion of the punch press, and the state changes to (8).

In the state of (8), the second tool exchange arm 99 is lowered so as to be at the same height as the tool mounting portion of the punch press, and changes to the state of (9). During this time, the first tool changing arm 97 is on standby.

In the state (9), the second tool exchanging arm 99 advances to mount the punch and die on the tool mounting portion of the punch press, and changes to the state (10). First tool change arm
97 is waiting.

In the state of (10), the upper finger 139 of the second tool exchanging arm 99 rises to mount the punch, and changes to the state of (11). First tool change arm 97
Is waiting.

When the punch and the die are fixed in the state (11), the second tool exchanging arm 99 retracts and changes to the state (12). The first tool change arm 99 is on standby.
In the press machine, punching with the newly installed punch and die is started.

In the state of (12), the second tool exchanging arm 99 is returned to the original raised position, and the upper finger 139 is lowered to change to the state of (13). The first tool change arm 97 is on standby.

In the state of (13), the first and second tool changing arms 97, 9
The 9's is rotated 180 ° in the opposite direction to the above, and the state of (14) is reached, and the first tool exchanging arm 97 corresponds to the tool magazine.

In the state (14), the first tool exchanging arm 97 advances so that the punches and dies that it holds are stored in the tool magazine, and punches the tool holder in the tool magazine.
Pass the die and change to the state of (15). The second tool change arm is on standby.

In the state of (15), the first tool exchange arm 97 retracts to return to the original state and changes to the state of (16).

By turning 90 ° in the direction of the arrow in the state of (16), the original state of (1) is restored.

As can be understood from the above process, the first tool change arm
97 acts to remove the punch and die mounted on the punch press and store them in the tool magazine. The second tool changing arm 99 serves to take out the punch and die housed in the tool magazine and mount them on the tool mounting portion of the punch press. Therefore, it is possible to extremely shorten the time for tool exchange. Further, since the upper fingers 139 of the first and second tool exchanging arms 97 and 99 are vertically movable, when the upper fingers 139 are maintained in the lowered state, only the lower fingers 141 are used and only the die is used. It can also be exchanged. That is, when the punching shape and size are the same and the plate thickness of the work piece changes, it functions to adjust the clearance between the punch and the die.

[Effects of the Invention] As can be understood from the above description of the embodiments, in short, the present invention removes a pair of tools or dies including a punch and a die from a tool mounting portion in a punch press and stores them in a tool magazine. And a pair of tools consisting of a punch and a die housed in the tool magazine, or a second tool dedicated to mounting for mounting on the tool mounting portion. According to the present invention, the first tool exchanging arm is the tool mounting portion of the punch press, since the exchanging arm and the first and second tool exchanging arms are individually operably provided. From the tool magazine to the second tool change arm before the removal of the pair of tools consisting of the unnecessary punch and die from the tool magazine. It is possible to take out the tool in advance and make it stand by, and when the unnecessary removal of the pair of tools from the tool mounting portion of the punch press is completed by the first tool exchanging arm, the tool is made to stand by. The second tool exchange arm allows the required pair of tools to be immediately mounted on the tool mounting portion of the punch press. That is, according to the configuration of the present invention, the tool change of the punch press can be performed extremely quickly, so that the working efficiency of the punch press can be remarkably improved.

[Brief description of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of a punch press embodying the present invention, showing a partial cross section. FIG. 2 is a plan view of the same. FIG. 3 is an enlarged cross-sectional view showing in detail an arrow III portion in FIG. FIG. 4 is a partial cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is an enlarged detailed view taken along the line VV in FIG. FIG. 6 is a plan view of FIG. FIG. 7 is the sixth
FIG. 7 is a sectional view of a main portion taken along the line VII-VII in the figure. FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. FIG. 9 is a bottom view of FIG. FIG. 10 is a right side view of FIG. 8 showing only the main part. FIG. 11 is a process explanatory diagram of the tool exchange shown in the schematic view. 39 ... Tool magazine 97 ... First tool changing arm 99 ... Second tool changing arm 139 ... Upper finger, 141 ... Lower finger

Claims (3)

[Claims] 1. A first tool exchanging arm for exclusive use for removing a pair of tools or dies including a punch and a die from a tool mounting portion of a punch press and storing them in a tool magazine, and a first tool exchanging arm accommodated in the tool magazine. A pair of tools including a punch and a die, or a second tool exchanging arm dedicated to mounting for taking out the die and mounting it on the tool mounting portion, and each of the first and second tool exchanging arms. A tool changing device for a punch press, characterized in that it is individually operably provided. 2. The first tool exchanging arm and the second tool exchanging arm are freely rotatable with a proper phase difference on a plane at a proper position orthogonal to a tool axis direction for attaching and detaching the punch to and from the punch holder. A tool changing device for a punch press according to claim 1, wherein the tool changing device is provided. 3. The first tool changing arm and the second tool changing arm are movable in a tool axis direction for attaching and detaching the punch to and from a punch holder and a direction orthogonal to the tool axis direction. A tool changing device for a punch press according to claim 2.