JP2010064091A - Turret punch press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a turret punch press which attains the alignment of a punch and a die by downsizing a turret, and prevents the position of the die from being deviated during the machining. <P>SOLUTION: In the turret punch press, a desired die out of dies consisting of a plurality of punches P and dies D arranged on a rotatable upper turret 6 and a lower turret 7 is positioned at the machining position C, and the predetermined punching is executed to a workpiece W positioned at the machining position C. The plurality of dies D are supported by die supporting members 23, 25 which are attachably/detachably arranged on the outer side of the lower turret 7, and a vertically moving mechanism 27 for vertically moving the die supporting members 23, 25 positioned at the machining position and a fixing mechanism 28 for fixing the die supporting members while being detached from the lower turret 7 are respectively arranged at the machining position C. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a turret punch press in which only a die to be used is raised at a processing position.

Conventionally, the turret punch press has an upper turret 96 and a lower turret 97 that can be rotated synchronously as shown in FIG. 12, for example, and the punch P is transferred to the lower turret 97 via a punch holder 94. The dies D are respectively attached via the die holder 95.

With this configuration, by moving the workpiece W gripped by the clamp 93 in the horizontal direction, the workpiece W is positioned at a machining position immediately below the striker (not shown), and the upper and lower turrets 96 and 97 are rotated synchronously. Thus, a die composed of a predetermined punch P and die D is similarly positioned and selected at the processing position.

In this state, when the punch P is struck by a striker (not shown), the punch P is lowered, and the work W gripped by the clamp 93 is punched, for example, in cooperation with the die D.

However, if the upper surface of the punching die D shown in the figure is at the same height as the pass line while the workpiece W is moving or the turrets 96 and 97 are rotating, the die D is in contact with the back surface of the workpiece W. Therefore, it is clear that the back surface of the workpiece W is scratched and its value as a product is lost.

This applies not only to the punching die D but also to the upward forming die, for example. In this case, the upper surface of the upward forming die is moved during the movement of the workpiece W or the rotation of the turrets 96, 97. When the height is above the pass line, the die comes into contact with the back surface of the workpiece W, so that the back surface of the workpiece W is scratched, and similarly, the value as a product is lost.

  Therefore, in order to solve this problem, conventionally, in the turret punch press, for example, as disclosed in Japanese Patent Application Laid-Open No. 2003-33832, a mechanism for raising only the die to be used at the machining position has been developed. Yes.

For example, as shown in FIG. 5 of Japanese Patent Laid-Open No. 2003-33832, a protection table 33 that supports the workpiece W at the height position of the pass line is provided above the lower turret 23, and punching in the protection table 33 is performed. A notch 37 and a shutter 45 for opening and closing the notch 37 are provided in a region including the position P1 (FIG. 1), and a push-up means 73 for pushing up the die 27 is provided below the lower turret 23.
JP 2003-33832 A

The mechanism disclosed in Japanese Patent Application Laid-Open No. 2003-33832 has a problem that the turret becomes large and the centering of a die composed of a punch and a die is impossible, and the die position is easily shifted.

That is, as described above, at the time of punching, for example, at the time of punching, a vertically downward load is applied to the die 27 side (FIG. 6 of the same publication) from the upper punch P (corresponding to FIG. 12 of this application) side. This vertically downward load is received by the entire lower frame 7 (FIG. 7 of the same publication) through the die 27, the die holder 65.

However, in the case of punching, in the case of overtaking, a load in the horizontal direction is applied in addition to the load in the lower vertical direction, so that a load in the lower diagonal direction is applied to the die 27 side (FIG. 6 of the same publication). The lower load is received by the lower turret 23 through the die 27, the die holder 65, and the guide bar 67.

Therefore, it is necessary to make the guide bar 67 thick, for example. Therefore, the die holder 65 and further the lower turret 23 supporting the die holder 65 must be enlarged.

On the other hand, in order to raise the die 27 (FIG. 6 of the same publication), it is necessary to add a die holder 65 for placing the die 27, and a push-up block 75 and an entry block 83 for raising the die holder 65, respectively. For this reason, the lower turret 23 must be large.

The die holder 65 on which the die 27 is placed moves up and down while being guided by the guide bar 67, but there is no means for fixing the die holder 65 after the die holder 65 is raised.

For this reason, the position of the die 27 may be shifted during processing (for example, during punching), and processing accuracy is lowered.

Furthermore, in the above-mentioned Japanese Patent Application Laid-Open No. 2003-33832, it is not considered to perform centering to align the center of a die (corresponding to FIG. 12 of the present application) composed of a punch P and a die D.

An object of the present invention is to provide a turret punch press capable of reducing the size of a turret, preventing the position of a die during processing from shifting, and enabling the centering of punches and dies.

In order to solve the above problems, the present invention, as shown in FIGS.
A desired mold is positioned at a processing position C from among a mold including a plurality of punches P and dies D arranged on the rotatable upper turret 6 and lower turret 7, and the workpiece W positioned at the processing position C is positioned. In a turret punch press that performs predetermined punching on
Each of the plurality of dies D is supported by die support members 23 and 25 that are detachably disposed on the outside of the lower turret 7, and the die support member 23 positioned at the processing position C, A means called a turret punch press is provided, in which a vertical movement mechanism 27 that moves up and down in a state where 25 is detached from the lower turret 7 and a fixing mechanism 28 that is fixed are arranged at the processing position C, respectively.

Therefore, according to the configuration of the present invention, the die support members 23 and 25 positioned at the processing position C (FIG. 1) are detached from the lower turret 7 via the attachment / detachment mechanism 26 and are moved by the vertical movement mechanism 27. The die D is supported if the workpiece W is punched (for example, punched) in cooperation with the corresponding predetermined die D by being fixed by the fixing mechanism 28 after being raised and pressing the predetermined punch P with the striker 2. Since the die holder 23 and the die base 25 constituting the die support members 23 and 25 are provided outside the lower turret 7, the load applied from the punch P side to the die D side is directly received by the lower turret 7 itself. In addition, since the vertical movement mechanism 27 and the fixing mechanism 28 are arranged at the processing position C outside the lower turret 7, the lower turret 7 can be small. Thus, the size of the lower turret 7 is reduced (FIG. 2), and the fixing mechanism 28 is provided, so that the position of the die D being processed does not shift (FIG. 11D), and further, the die holder 23 If (FIG. 4) and the die base 25 are connected with bolts 55 and 56, the bolts 55 and 56 are loosened, thereby enabling alignment.

Therefore, according to the present invention, it is possible to provide a turret punch press capable of reducing the size of the turret, not shifting the die position during processing, and enabling the punch and die to be aligned.

Furthermore, according to the present invention, as described above, since each die D is disposed outside the lower turret 7 (FIG. 2), the load applied from the punch P side to the die D side is directly applied to the lower turret 7 itself. Therefore, the diameter (FIG. 2) of the lower turret 7 can be made smaller and thinner, and the structure on the lower turret 7 side can be realized more easily.

Hereinafter, the present invention will be described with reference to the accompanying drawings by embodiments.
FIG. 1 is an overall view showing an embodiment of the present invention.

The turret punch press shown in FIG. 1 has an upper turret 6 and a lower turret 7,
A plurality of punches P are arranged via the upper turret 6, and a plurality of dies D are arranged on the lower turret 7 via a die holder 23.

The upper turret 6 and the lower turret 7 are rotatable on the outer ring, and neither of the shafts 8 and 9 is rotated. As shown in the figure, the outer rings are wound with chains 4 and 5, respectively. 4 and 5 are wound around the drive shaft 3.

With this configuration, when the motor M is operated to rotate the drive shaft 3 and the chains 4 and 5 are circulated, the upper turret 6 and the lower turret 7 rotate synchronously, and a desired one of the plurality of molds is selected. The mold can be positioned at the processing position C.

In the turret punch press shown in FIG. 1, the turrets 6 and 7 are rotated, and first, for example, the dies for three tracks in the radial direction including the desired dies are positioned at the processing position C.

Thereafter, a striker cylinder 21 described later is further driven to position the striker 2 at one of the corresponding track positions C1, C2, and C3, and the punch P of the die selected by the positioned striker 2 is pressed. , Work W in cooperation with Die D
Is to be punched.

The striker 2 can be positioned in the Y-axis direction at the machining position C, and the striker 2 is slidably coupled to the ram 20 and coupled to a striker cylinder 21 attached to the outer surface thereof. The ram cylinder 19 provided on the frame 1 moves up and down.

With this configuration, when the striker cylinder 21 is driven, the striker 2 can be positioned at the track position C1, C2, or C3 immediately above the molds P and D to be selected. , When the ram 20 is lowered, as described above, the striker 2 hits the selected punch P to perform a predetermined punching process.

In this case, the workpiece W to be processed is gripped by the clamp 13, the clamp 13 is attached to the carriage 12, the carriage 12 is attached to the carriage base 11 via the X-axis guide rail 16, A ball screw 15 of an X-axis motor Mx is screwed to the carriage 12.

The carriage base 11 is slidably coupled to the Y-axis guide rail 17 on the lower frame 18, and the ball screw 14 of the Y-axis motor My is screwed to the carriage base 11.

With this configuration, when the X-axis motor Mx and the Y-axis motor My are operated, the carriage 12 moves on the carriage base 11 in the X-axis direction, and the carriage base 11 moves in the Y-axis direction. The workpiece W gripped by the attached clamp 13 is conveyed on the processing table 10 and positioned at the processing position C, and for example, punching is performed.

On the other hand, the plurality of dies D among the dies P and D described above are supported by die support members 23 and 25 which are detachably disposed on the outside of the lower turret 7, and the processing position A vertically moving mechanism 27 for vertically moving the die support members 23 and 25 positioned at C in a state of being detached from the lower turret 7 and a fixing mechanism 28 for fixing are disposed at the processing position C, respectively.

That is, the die D is arranged outside the lower turret 7 (FIGS. 2 to 3), the die D is provided on the die holder 23 via the ejector pipe 33 (FIG. 4), and the die holder 23 is provided on the die base 25. Yes.

In other words, each die D is disposed outside the lower turret 7 via a die holder 23 and a die base 25 that constitute a die support member.

In this case, as shown in FIG. 4, if the die holder 23 and the die base 25 are connected by bolts 55 and 56, the bolts 55 and 56 are loosened so that the punch P and the die D can be aligned.

The base end portion 25A of the die base 25 (FIG. 3) faces the shaft 9 of the lower turret 7 and is extremely thin as compared to other portions, as shown in the figure. The vertical guide 30 penetrates through the mechanism 36 and is pressed against the lower turret 7 and through the base end 25A (FIGS. 5 and 6).

On the lower turret 7 (FIG. 3), the lock mechanism 36 is provided for each die base 25, in other words, for each die support member 23, 25, radially outward from the turret center R passing through the shaft 9. ing.

Each of the lock mechanisms 36 has the same configuration, and details thereof are as shown in FIG.

In FIG. 5, the lock mechanism 36 has a substantially cuboid-shaped housing 29, and the housing 29 is provided with the first support column 29 </ b> A and the second support column 29 </ b> B and the vertical guide 30 described above standing in the longitudinal direction. The first support post 29A and the second support post 29B support a pin 31, which will be described later, and the vertical guide 30 guides the base end portion 25A of the die base 25 in the vertical direction.

A first plate 31A and a second plate 31B are provided on the pin 31 and on the opposite side of the die base 25, and an abutment plate 31C is provided at a substantially central portion. Between the one support post 29A and the contact plate 31C of the pin 31, for example, both ends of a compression coil spring 32 constituting an urging member are in contact.

With this configuration, the pin 31 is urged toward the die base 25 side, and the tip end portion of the pin 31 abuts on the base end portion 25A of the die base 25 described above, thereby pressing the die base 25 toward the lower turret 7 side. It has come to be.

In this case, the contact relationship between the tip end portion of the pin 31 and the base end portion 25A of the die base 25 is as shown in FIG. 6, and one of the contact surfaces is an inclined surface.

6A shows a case where the base end 25A side of the die base 25 is an inclined surface 25B (an angle with the horizontal plane is, for example, α). In this case, the die base 25 side is already described from the pin 31 side. Horizontal biasing force F by the compression coil spring 32 (FIG. 5)
(FIG. 6A) is received.

Since the vertical component force F × SINα of the horizontal urging force F acts perpendicularly to the inclined surface 25B, the die base 25 is further moved to the housing by the vertical component force F × SINα × COSα = F / 2 × SIN2α. 29 and is pressed to the lower turret 7 side.

FIG. 6B shows a case where the tip end side of the pin 31 is an inclined surface 31A (an angle with the horizontal plane is, for example, β). In this case, the die base 25 side is already described from the pin 31 side. A horizontal biasing force G (FIG. 6B) is received by the compression coil spring 32 (FIG. 5).

Since the vertical component force G × SINβ of the horizontal biasing force G (force acting in the direction perpendicular to the inclined surface 31A of the pin 31) acts on the base end portion 25A of the die base 25, similarly, The die base 25 is pressed to the lower turret 7 side through the casing 29 by the vertical component force G × SINβ × COSβ = G / 2 × SIN2β.

A guide rod 34 as shown in the figure is erected on the pin 31 (FIG. 5) having such a function and in the vicinity of the contact plate 31C. The inserted guide groove 35 is formed on a mounting plate 38 provided at the top of the second support column 29B on the housing 29 side.

With this configuration, the forward / backward movement of the pin 31 of the lock mechanism 36 by the attaching / detaching mechanism 26 (FIG. 11) described later is smoothly performed.

On the other hand, the lower turret 7 (FIG. 2) is provided with an attaching / detaching mechanism 26, and the attaching / detaching mechanism 26 raises the die D positioned at the processing position C described above to, for example, the pass line PL (FIG. 11). (C)), the die base 25 of the die D is released from the locking mechanism 36 and separated from the lower turret 7 (FIG. 11B), or corresponds to the die D lowered after the processing (FIG. 11B). ) Is constrained by the lock mechanism 36 and is mounted again on the lower turret 7 (corresponding to FIG. 11A).

This attachment / detachment mechanism 26 (FIG. 11A) is common to each die base 25 and has, for example, a horizontal cylinder 37 provided on the shaft 9 of the lower turret 7, and the piston rod 37A of the horizontal cylinder 37 is , It always faces the machining position C.

A hook 37B is provided at the tip of the piston rod 37A. When the piston rod 37A is pushed out, the hook 37B is connected to the first plate 31A of the pin 31 constituting the lock mechanism 36 and the first plate 31A. It is located between the two plates 31B.

Accordingly, when the upper turret 6 and the lower turret 7 are synchronously rotated to select the desired molds P and D (FIG. 1) as the machining position C, the pins 31 of the lock mechanisms 36 on the lower turret 7 (FIG. 3). The first plate 31A passes through the hook 37B of the attachment / detachment mechanism 26 facing the processing position C.

Thereafter, when the desired molds P and D (FIG. 1) are stopped at the processing position C, the pin of the lock mechanism 36 that restrains the die base 25 of the corresponding die D (FIG. 11A) to the lower turret 7. The first plate 31 </ b> A of 31 stops at the position of the hook 37 </ b> B of the attachment / detachment mechanism 26.

In this state (FIG. 11A), when the piston rod 37A of the horizontal cylinder 37 constituting the attachment / detachment mechanism 26 is retracted (FIG. 11B), the first plate 31A of the pin 31 is also retracted together with the hook 37B.

Accordingly, when the entire pin 31 is retracted to the left against the restoring force of the compression coil spring 32, the base end portion 25A of the die base 25 is released, and the desired die D is detached from the lower turret 7 and becomes free. .

Thereafter, only the die D to be used can be raised and fixed at the processing position C by using the vertical movement mechanism 27 (FIG. 11C) and the fixing mechanism 28 (FIG. 11D).

FIG. 7 is a perspective view of the vertical movement mechanism 27 constituting the present invention.

In FIG. 7, as described above, the die D, its die holder 23, and the die base 25 are provided outside the lower turret 7, and the vertical movement mechanism 27 is also provided outside the lower turret 7.

The vertical movement mechanism 27 includes a disk support 24 and disk support blocks 40 and 41. The disk support 24 carries the die base 25 of the die D positioned at the processing position C. The disk support blocks 40 and 41 will be described later. As shown in FIG. 8, the disk support 24 is supported.

The disk support 24 includes an upper support 24A and a lower support 24B. The upper support 24A supports the die base 25, and the lower support 24B is coupled to the upper and lower cylinders 44 and 45.

That is, the lower turret 7 side (the right side in FIG. 7) of the lower support 24B is
The LM guides 46 and 47 guide the vertical direction, and the lower support 24B opposite to the lower turret 7 (left side in FIG. 7) is coupled to the piston rods of the upper and lower cylinders 44 and 45 via the wings 24C and 24D. ing.

With this configuration, the vertical movement mechanism 27 (FIG. 11C) can raise the die D selected at the processing position C, and can align the upper surface of the die D with, for example, the pass line PL.

Of the disk support blocks 40 and 41 shown in FIG. 7, the left disk support block 40 is coupled to the horizontal cylinder 38 (FIG. 8), and the right disk support block 41 is coupled to the horizontal cylinder 39.

With this configuration, the upper and lower cylinders 44 and 45 are operated to raise the disk support 24, thereby aligning the upper surface of the die D with the pass line PL (FIG. 8A), and then the horizontal cylinders 38 and 39. Is operated (FIG. 8B), the disk support blocks 40 and 41 approach each other and are inserted below the disk support 24.

Thereby, the disk support 24 on which the die D is placed via the die holder 23 and the die base 25 is supported by the disk support blocks 40 and 41, and a load applied from the punch P side (FIG. 1) to the die D side during punching is applied. The disk support 24 (FIG. 7) and the disk support blocks 40 and 41 receive the disk support.

In addition, since the disk support 24 is supported by the disk support blocks 40 and 41, even if the upper and lower cylinders 44 and 45 are turned off, the die assembly including the die D and the die holder 23 and the die base 25 which have once risen falls. There is nothing (Fig. 8 (B)).

Further, a stopper 48 is provided on the lowermost turret 7 side of the disk support 24 (FIG. 7), and the die base 25 is pressed against the stopper 48 by a fixing mechanism 28 (FIGS. 9 and 10) described later. (FIG. 10B, FIG. 11D), whereby the die D is fixed, positional displacement during processing is prevented, and processing accuracy is improved.

FIG. 9 is a perspective view of the fixing mechanism 28 constituting the present invention.

In FIG. 9, a fixing mechanism 28 is provided behind the above-described vertical movement mechanism 27 (FIG. 7) (on the opposite side of the lower turret 7).

As shown in FIG. 9, the fixing mechanism 28 has a base 50, and a step 57 is provided at the upper part of the base 50, and the upper and lower cylinders 51 are disposed forward (lower part) behind the step 57. Shot pin mounting members 42 are respectively provided on the turret 7 side.

The shot pin mounting member 42 is guided in the vertical direction via vertical guides 53 and 54, and the piston rod 52 of the upper and lower cylinders 51 described above is coupled to the rear portion of the shot pin mounting member 42, and the front portion is Is provided with a shot pin 43.

As shown in FIG. 10A, the shot pin 43 has a truncated cone shape (the cross section is wedge-shaped), and the surfaces 25A and 50A corresponding to the side surfaces of the truncated cone-shaped shot pin 43 are described above. The die base 25 and the base 50 are formed.

With this configuration, after the die D is raised by the above-described vertical movement mechanism 27 (FIG. 7) and the upper surface of the die D is made to coincide with the pass line PL (FIG. 11C), the vertical cylinder 51 (FIG. 9). ) To lower the shot pin mounting member 42 (FIG. 10A).

As a result, the aforementioned truncated cone-shaped shot pin 43 is also lowered, so that the shot pin 43 is inserted into the corresponding surfaces 25A and 50A, and the surface 25A on the die base 25 side is pressed, whereby the disk support 24 The die base 25 in a free state moves to the lower turret 7 side, the die base 25 is pressed against the stopper 48 of the disk support 24 (FIG. 10B), and the die D positioned at the processing position C is fixed. (FIG. 11D).

The operation of the present invention having the above configuration will be described below.

The drive shaft 3 is rotated by operating the motor M (FIG. 1), the chains 4 and 5 are circulated, and the upper turret 6 and the lower turret 7 are rotated synchronously. At the stage where the mold is selected at the processing position C and positioned,
As shown in FIG. 11A, the first plate 31A of the pin 31 of the lock mechanism 36 that holds the die base 25 of the corresponding die D to the lower turret 7 stops at the position of the hook 37B of the attachment / detachment mechanism 26. ing.

In this state, as shown in FIG. 11B, if the piston rod 37A of the horizontal cylinder 37 constituting the attachment / detachment mechanism 26 is retracted, the first plate 31A of the pin 31 is also retracted together with the hook 37B. Is retracted to the left against the restoring force of the compression coil spring 32, thereby releasing the base end portion 25A of the die base 25 and the desired die D is detached from the lower turret 7 and becomes free.

Therefore, when the upper and lower cylinders 44 and 45 of the vertical movement mechanism 27 (FIG. 7) are operated to raise the disk support 24, the upper surface of the die D provided on the die base 25 and the die holder 23 is As shown in FIG. 11C, it can be matched with the pass line PL.

Thereafter, when the horizontal cylinders 38 and 39 of the vertical movement mechanism 27 (FIG. 7) are operated, the disk support blocks 40 and 41 are brought close to each other (FIG. 8B) and inserted below the disk support 24. The disk support 24 is supported.

Further, when the upper and lower cylinders 51 of the fixing mechanism 28 (FIG. 9) are operated to lower the shot pin mounting member 42, the truncated cone-shaped shot pin 43 is also lowered as shown in FIG. 11 (D).

As a result, the shot pin 43 is inserted into the corresponding surfaces 25A and 50A and the surface 25A on the die base 25 side is pressed, so that the die base 25 in the free state on the disk support 24 is lowered as shown in the figure. Since the die base 25 moves to the turret 7 side and is pressed against the stopper 48 of the disk support 24, the die D positioned at the processing position C is fixed.

In this state, after the striker cylinder 21 (FIG. 1) is driven and the striker 2 is positioned at the track position C1, C2 or C3 immediately above the selected mold P, D, the ram cylinder 19 is driven. The ram 20 is lowered, the selected punch P is pressed, and the workpiece W (FIG. 11D) is punched in cooperation with the die D.

At this time, since the die D (die holder 23, die base 25) is provided outside the lower turret 7, the load applied from the punch P side to the die D side does not have to be directly received by the lower turret 7 itself. In addition, since the vertical movement mechanism 27 and the fixing mechanism 28 are disposed outside the lower turret 7, the lower turret 7 can be small, and thus the size of the lower turret 7 can be reduced (FIGS. 1 to 1). In addition, since the fixing mechanism 28 is provided, the position of the die D being processed does not shift (FIG. 11D).

Furthermore, as already described (FIG. 4), the die holder 23 and the die base 25 are connected by the bolts 55 and 56. Therefore, the centering can be performed by loosening the bolts 55 and 56.

As described above, the present invention is extremely useful because it can be used for a turret punch press in which the turret can be miniaturized, the punch and die can be aligned, and the die position during processing does not shift.

1 is an overall view showing an embodiment of the present invention. It is a perspective view of the attachment / detachment mechanism 26 which comprises this invention. FIG. 3 is a plan view of FIG. 2. It is a side view which shows the state in the processing position C of this invention. It is a perspective view of the lock mechanism 36 which comprises this invention. It is a figure which shows the relationship between the locking mechanism and the die base 25 which comprise this invention. It is a perspective view of the vertical movement mechanism 27 which comprises this invention. It is operation | movement explanatory drawing of FIG. It is a perspective view of the fixing mechanism 28 which comprises this invention. It is operation | movement explanatory drawing of FIG. It is operation | movement explanatory drawing of this invention. It is explanatory drawing of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper frame 2 Striker 3 Drive shaft 4, 5 Chain 6 Upper turret 7 Lower turret 8, 9 Rotary shaft 10 Table 11 Carriage base 12 Carriage 13 Clamp 14, 15 Ball screw 16 X-axis guide rail 17 Y-axis guide rail 18 Lower frame 19 Ram cylinder 20 Ram 21 Striker cylinder 23 Die holder 24 Disc support 25 Die base 26 Detachment mechanism 27 Vertical movement mechanism 28 Fixing mechanism 29 Housing 30 Vertical guide 31 Pin 32 Compression coil spring 33 Ejector pipe 34 Guide rod 35 Guide groove 35 Lock Mechanisms 37, 38, 39 Horizontal cylinders 40, 41 Disc support block 42 Shot pin mounting member 43 Shot pins 44, 45 Upper cylinder 46, 47 LM guide 48 Stopper 50 Base 51 of fixing mechanism 28 Upper and lower cylinders 52 of the top pin mounting member 42 Piston rods 53 and 54 of the upper and lower cylinders 51 Vertical guide 55 and 56 Bolt 57 Step C Processing position D Die P Punch R Turret center W Workpiece

Claims (8)

A desired die is positioned at a processing position from a plurality of punches and dies arranged on the rotatable upper turret and lower turret, and a predetermined punching process is performed on the workpiece positioned at the processing position. In the turret punch press,
Each of the plurality of dies is supported by a die support member that is detachably disposed outside the lower turret, and the die support member positioned at the processing position is detached from the lower turret. A turret punch press, wherein a vertical movement mechanism for moving up and down and a fixing mechanism for fixing are respectively arranged at the processing positions. 2. The turret punch press according to claim 1, wherein each of the die support members includes a die holder and a die base, both of which are arranged outside the lower turret. The turret punch press according to claim 1 or 2, wherein a lock mechanism for pressing the die support member against the lower turret is provided for each die support member. The lock mechanism includes a housing provided on the upper surface of the lower turret, a pin supported by the housing and biased toward the die support member, and a vertical guide erected on the housing. 4. The turret punch press according to claim 3, wherein the pin is provided so as to be able to advance and retreat with respect to a die support member that is vertically guided through the vertical guide. An attaching / detaching mechanism for attaching or detaching the die support member positioned at the processing position to the lower turret via a lock mechanism has a horizontal cylinder provided on the shaft of the lower turret and is positioned at the processing position. The turret punch press according to claim 4, wherein the die support member is detached from or attached to the lower turret by pulling or pushing out a pin constituting the lock mechanism of the die support member. 2. The turret punch press according to claim 1, wherein the vertical movement mechanism has a vertically movable disk support on which a die support member positioned at a processing position is mounted and a freely movable disk support block for supporting the disk support. The turret punch press according to claim 1 or 6, wherein the fixing mechanism has a shot pin, presses the die support member positioned at a processing position by lowering the shot pin, and presses the die support member against the disk support. The turret punch press according to claim 7, wherein the shot pin has a truncated cone shape, and a surface corresponding to a side surface of the truncated cone shaped shot pin is formed on a base of the die support member and the fixing mechanism.

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