JPH0138570B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a turret punch press, and more specifically, among a large number of pairs of upper and lower dies attached to the upper and lower turrets of a turret punch,
With a die with a directional punch shape indexed to the processing position, the upper and lower dies are simultaneously rotated in the same direction by the same desired angle relative to the upper and lower turrets, and held fixed at the desired angle. The present invention relates to a turret punch press equipped with a device for.

Originally, a turret punch press was generally constructed by mounting a large number of upper molds on a disc-shaped or fan-shaped upper turret, and mounting a lower mold opposite to the upper molds on the lower turret. In such a turret punch press, even when performing punching of the same shape, if the shape has directionality and the directions are different, multiple upper and lower molds of the same shape are used. It was necessary to attach the molds to the upper and lower turrets in different directions. Therefore, there was a problem in mounting more upper and lower molds on the upper and lower turrets. In recent years, in order to solve the above problems, a technique has been developed in which an upper mold and a lower mold are rotatably mounted on upper and lower turrets. However, since the rotary drive device for rotating the upper and lower molds is attached to the frame of the turret punch press, the rotary drive device and the upper and lower molds are connected via a clutch device. It was necessary to link the two. Therefore, it is necessary to reliably control the "on/off" of the clutch device, and the time from indexing the upper and lower turrets to starting machining is relatively long, and the configuration is complicated. There was a problem that was becoming more widespread. Furthermore, during the process of continuing punching after the upper and lower dies have been rotated by a rotary drive device, there is a risk that the upper and lower dies may rotate due to shocks during processing. It was hot.

This invention was invented in view of the above-mentioned problems, and its main purpose is to provide a punch with a mechanism that firmly fixes the angular position relative to the turret set in the upper and lower molds so that it does not rotate during continuous punching. It is to provide press.

Preferred embodiments of the present invention will be described in detail below based on the drawings.

As shown in FIG. 1, the turret punch press 1 is comprised of a gate-shaped frame in which an upper frame 9 is supported by side frames 5 and 7 erected on both sides of a base 3. However, the structure of the frame is not limited to the gate type, and may be a general C-shape. On the lower surface of the upper frame 9, a disk-shaped upper turret 13, on which a number of upper molds 11 are mounted, is rotatably mounted by an upper rotating shaft 15. Further, on the upper surface of the base 3, a lower turret 19, on which a number of lower molds 17 facing each upper mold 11 are mounted, is rotatably mounted by a lower rotating shaft 21. The upper and lower turrets 13 and 19 are synchronously rotated in the same direction by a servo motor (not shown) installed in the frame, so that the upper and lower molds 11 and 17 are rotated in the same direction.
It is indexed and positioned directly below a ram 23 mounted on the lower surface of the upper frame 9 so as to be vertically movable.

On the front and rear surfaces near the top surface of the base 3,
In FIG. 1, guide rails 25 extending in the left and right direction are installed, and each guide rail 2
5, a movable table 27 is movably supported. Each movable table 27 is located on both the front and rear sides of a fixed table 29 fixed on the base 3, and each movable table 27 is integrally moved by a first carriage 31 extending in the front and rear direction so as to straddle the fixed table 29. It is connected to. A second carriage 33 is mounted on the first carriage 31 and is movable in the front-back direction perpendicular to the moving direction of the movable table 27.
3 is equipped with a plurality of clamp devices 35 capable of gripping one side edge of a plate-shaped work W so as to be adjustable in position in the front-rear direction.

The turret punch press 1 having the above configuration has the following features:
Since these are generally known, detailed explanations of other configurations and operations will be omitted.

As shown in FIGS. 2 and 3, upper rotary mold holders 37a, which are rotatable with respect to the upper turret 13, are provided at appropriate locations (symmetrical positions in this embodiment) on the upper surface of the upper turret 13. 37b is rotatably mounted, and the upper rotating mold holder 3 such as this
7a and 37b are interlocked and connected to rotate in conjunction with a first interlocking member 39 which extends in the radial direction and is rotatably attached to the upper turret 13. Further, lower rotary mold holders 41a and 41b are rotatably mounted to the lower turret 19 at positions where the lower turret 19 corresponds to the upper rotary mold holders 37a and 37b, and these lower rotary mold holders 41a and 41b are rotatably mounted to the lower turret 19. The mold holders 41a and 41b are interlocked and connected to rotate in conjunction with a second interlocking member 43 that extends in the radial direction and is rotatably attached to the lower turret 19.

The constructions of the first interlocking member 39 and the second interlocking member 43 are substantially the same, and both ends of each are slightly protruded in the radial direction from the outer peripheral edges of the upper turret 13 and the lower turret 19. The end of the first interlocking member 39 can be freely engaged with the end of the first transmission shaft 47 (see FIG. 4) in the upper transmission device 45 mounted on the upper frame 9, and the second interlocking member 39
The end of 3 is the lower transmission device 4 attached to the base 3.
It can freely engage with the end of the second power transmission shaft 51 at 9. The upper and lower transmission devices 45 and 49 have substantially the same configuration, and each has a rotational drive device 53 such as a servo motor appropriately mounted on the frame.
are linked together.

Therefore, the end of the first interlocking member 39 is engaged with the end of the first transmission shaft 47, and the end of the second interlocking member 43 is engaged with the end of the second transmission shaft 51. At times, by rotationally driving the rotary drive device 53, the upper rotary mold holders 37a, 37b and the lower rotary mold holders 41a, 41b are simultaneously rotated in the same direction. Therefore, the upper and lower molds supported by the upper and lower rotating mold holders 37a, 37b; 41a, 41b are connected to the upper and lower turrets 13, 19.
The die can be rotated in any direction relative to the upper and lower turrets 13 and 19.

Next, details of each component will be explained.

The rotary drive device 53 is attached to a gearbox 55 suitably attached to the frame, and a drive gear 59 is integrally attached to a drive shaft 57 protruding into the gearbox 55. The gearbox 55 has a first shaft 61 and a second shaft 6 spaced apart from each other vertically.
3 is rotatably supported, and driven gears 65 and 67 having the same diameter and meshing with the drive gear 59 are integrally attached to one ends of the first shaft 61 and the second shaft 63, respectively. Therefore, the upper and lower first,
The second shafts 61 and 63 are simultaneously rotated in the same direction by the rotary drive device 53.

The first shaft 61 is connected to an input shaft 69 of the upper transmission device 45 via a general universal joint 71. And input shaft 6
A timing belt 79 is wound around a pulley 73 provided at 9 and a pulley 77 integrally attached to an intermediate shaft 75 (see FIG. 4) of the upper transmission device 45. The intermediate shaft 75 is rotatably supported by a frame 81 of the upper transmission device 45, and an intermediate gear 83 is integrally formed at one end of the intermediate shaft 75. Further, a fixing and holding device 85 is attached to a portion of the first transmission shaft 47 to prevent rotation of the first transmission shaft 47 and to freely hold the first transmission shaft 47 in a fixed state (see FIG. 2). This fixed holding device 85 is
For example, it consists of an electromagnetic or mechanical brake device, etc., and its details will be omitted. The intermediate gear 83 of the intermediate shaft 75 meshes with a transmission gear 87 that is integrally attached to a part of the first transmission shaft 47 that is horizontally and rotatably supported by the frame body 81. A fluid pressure cylinder 88 is provided at the right end of the first transmission shaft 47 in FIG. The intermediate gear 83 is rotatable and has a large thickness, and is in mesh with the transmission gear 87 regardless of its moving position. Therefore, the first transmission shaft 47 can be rotated by the rotational drive device 53.

The other end of the first transmission shaft 47 is connected to the upper turret 13.
The first interlocking member 3 protrudes to the side, and the other end has the first interlocking member 3
A second engaging portion 91 is formed which can be freely engaged with a first engaging portion 89 formed at the end of the second engaging portion 9 . That is, the first
As is clear from FIGS. 4 and 5, the end of the interlocking member 39 is formed with a first engaging portion 89 that penetrates a round bar at the narrowed diameter portion, and the first engaging portion 89 is connected to the first power transmission shaft 4.
A groove portion 93 is provided at the other end of the first engaging portion 89 to allow the aforementioned round rod of the first engaging portion 89 to be held therein. Therefore, when the first engaging portion 89 of the first interlocking member 39 and the second engaging portion 91 of the first transmission shaft 47 are in the engaged state, the intermediate shaft 75 is fixed by the fixing holding device 85. By releasing this, the rotation of the rotary drive device 53 can be transmitted to the first interlocking member 39 via the first transmission shaft 47.

By the way, the first interlocking member 39 is connected to the upper turret 1.
3, when the upper turret 13 rotates, it rotates integrally with the upper turret 13 around the upper rotating shaft 15.

Note that the configuration for transmitting rotation from the gearbox 55 to the second interlocking member 43 is the same as the configuration for transmitting rotation from the gearbox 55 to the first interlocking member 39 as described above, so that the components have the same function. are given the same reference numerals and the details will be omitted.

As shown in detail in FIG. 2, the first interlocking member 39 includes worm shafts 97a and 97b rotatably supported by bearing blocks 95a and 95b at symmetrical positions on the upper turret 13, and an upper rotating shaft 15. It consists of a connecting shaft 99 passing horizontally through the worm shafts 97a, 97b and the connecting shaft 9.
Both ends of 9 are connected via a general universal joint 101. The first engaging portion 89 is attached to the end portions of both worm shafts 97a and 97b.
is formed. Both worm shafts 9
Worm 97' integrally formed with 7a and 97b
a, 97'b are upper rotary mold holders 37a, 3
It meshes with the worm gear formed at 7b. Note that the upper rotating mold holder 37a,
37b is configured as shown in FIG. 6, for example.

That is, a cylindrical bushing member 105 is fitted and fixed in a mold holder hole 103 bored in the upper turret 13, and a cylindrical rotary holder 109 is installed inside this bushing member 105 via a plurality of bearings 107. is rotatably supported. A worm gear 1 that meshes with the worms 97'a and 97'b is mounted on the upper part of the rotary holder 109.
11 are integrally fixed with bolts or the like, and a positioning key 115 for directional positioning of the upper mold set 113, which can be detachably attached to the rotary holder 109, is integrally attached.
Therefore, when the worm shafts 97a and 97b are rotated in an appropriate direction, the rotating holder 109 is rotated with respect to the upper turret 13, and this rotating holder 1
09 is to be rotated. In addition, the upper mold set 11
3 is a general mold lifter device 117 mounted on the upper turret 13, which is always urged upward by the action of a lifter spring 119.

As shown in FIG. 2, a brake ring 121 is integrally attached to an appropriate position of the connecting shaft 99 in the first interlocking member 39, and a brake ring 121 is attached to a position corresponding to the brake ring 121 of the upper turret 13. A fixing and holding device 123 that can freely clamp and fix the ring 121 is attached. The fixing and holding device 123 serves to prevent the first interlocking member 39 and the upper rotary mold holders 37a and 37b from rotating due to vibration or the like by clamping and fixing the brake ring 121. . The fixed holding device 123 is configured as shown in FIGS. 7 to 9, for example.

That is, the upper turret 13 is attached by bolts etc.
Clamp base 12 with a U-shaped cross section fixed on top
Two clamp jaw members 131a, 131b having clamp shoes 129a, 129b at their tips are horizontally rotatably mounted in the recess 127 at the end of the clamp jaw members 131a, 131b. A suitable bullet 135 such as urethane rubber is loaded near the section. Therefore, the clamp jaw member 1
31a and 131b are the brake rings 121;
It is constantly biased so that it is held in place. Further, the vertical wall portion 1 of the clamp base 125
37a, 137b, links 14 are provided with pressing portions 139a, 139b that press the clamp jaw members 131a, 131b against the bullet 135.
1a, 141b are horizontal pivots 143a, 143b
are pivotally connected via links 141a, 141
The ends of b are pivotally connected via a hinge pin 145. The other end of one link 141b largely protrudes laterally. Therefore, link 141b
By pressing down the other end, the clamp jaw members 131a, 131b are pressed against the bullet 135, and the brake ring 121 is released from being clamped.

A pressing cylinder 147 is provided at a symmetrical position on the upper frame 9 as a device for pressing down the other end of one link 141b in the fixed holding device 123.
a, 147b are attached. Pressing cylinder 14
One link 1 is attached to the lower end of a piston rod (not shown) provided in 7a, 147b so as to be able to move up and down.
Push rod 149 that presses the other end of 41b
is fixed with a screw, and this push rod 149
is attached to the upper frame 9 via the bracket 151.
Dog 1 that operates the proximity switch 153 attached to
55 is installed. The above proximity switch 153
detects the vertical movement of the dog 155 and fixes the holding device 123 by the pressing cylinders 147a and 147b.
This is used to detect the fixation and release of With the above configuration, the press cylinders 147a and 147b are operated, and the push rod 149 is used to press the link 141b.
By pressing the other end, the brake ring 1 is clamped by the clamp jaw members 131a and 131b.
21 is released.

The configuration of the lower rotary mold holders 41a and 41b attached to the lower turret 19 is almost the same as the configuration of the upper rotary mold holders 37a and 37b described above, and the second interlocking member 43 is It has almost the same structure as the interlocking member 39, and the structure of the fixing and holding device that can fix the second interlocking member 43 is also the same as the above-mentioned fixing and holding device 123, so it can be used as a component that performs the same function. The same reference numerals are given to the same reference numerals, and detailed explanation thereof will be omitted. Note that the fixed holding device 123 attached to the lower turret 19 is
Intermediate rod 157 (third
(see figure), the pressure cylinders 147a and 147b mounted on the base 3 are operated from below.

In the above configuration, the clamp device 35
After performing normal punching while holding the workpiece W and positioning it by moving it back and forth and left and right, in order to perform punching using a rotary die, first, move the upper and lower turrets 13 and 19 as appropriate. The upper rotary mold holder 37a and the lower rotary mold holder 4 are rotated as appropriate.
1a is indexed and positioned below the ram 23. In this way, the upper and lower rotary mold holders 37a,
When index positioning of 41a is performed, the first interlocking member 39 and the first interlocking member 43 formed at the end portions
As described above, the engaging portion 89 is connected to the first power transmission shaft 4.
7. Occupies a position corresponding to the second engaging part 91 formed at the end of the second transmission shaft 51, and the hydraulic cylinder 88
When activated, the sliding cylinder 92 moves and the first
The engaging portion 89 and the second engaging portion 91 will engage with each other. Therefore, appropriate upper and lower pressing cylinders 1
47a, 147b, the fixed holding device 12
3, the fixation of the first interlocking member 39 and the second interlocking member 43 is released, and the upper and lower transmission devices 45,
After releasing the fixation by the fixation holding device 85 at 49, the rotation drive device 53 is rotationally driven to rotate the upper and lower rotary mold holders 37a, 37b;
41a and 41b are to be rotated appropriately.

In the device of this embodiment described in detail above, after indexing the upper and lower molds to be rotated relative to the turret directly below the ram, the fluid pressure cylinder 88 is actuated to connect the first engaging portion 89 and the second engaging portion. Connect the engaging portion 91, loosen the fixed holding devices 85 and 123, and rotate the rotational drive device 53.
By rotating forward and backward, the angular position of the pair of upper and lower molds relative to the turret can be changed by the same angle. After setting the angular position, the fixed holding devices 85 and 123 are fixed in the holding state before punching work is started. Because of this, it was possible to overcome the problem of the upper and lower molds being rotated to match the orientation described at the beginning, where the set angle position would change due to the impact of continuous machining.

As can be understood from the above description of the embodiments, the gist of the present invention is as described in the claims. The plurality of upper molds supported on the upper turret are interlocked with a first interlocking member rotatably supported on the upper turret, and similarly, the plurality of lower molds rotatably supported on the lower turret are It is interlocked with a second interlocking member rotatably supported on the turret. The upper and lower turrets are each provided with a fixed holding device that can hold the first and second interlocking members in an immovable state.

Therefore, according to the present invention, when punching is performed by rotating the upper and lower turrets to index the mold appropriately, the upper and lower first and second interlocking members are held by the fixed holding device. By fixing the molds to the upper and lower turrets, a plurality of rotatable molds supported by the upper and lower turrets can be held in an immovable state.

In other words, it is sufficient to provide one fixed holding device for each of the upper and lower turrets, and there is no need to provide one for each rotatable mold, which simplifies the structure and makes it easier to use during punching. The rotatable mold can be securely held without causing even the slightest rotation in the first and second interlocking members due to intense vibration. In addition, the upper and lower molds can always be maintained in a precise alignment relationship, machining accuracy can be maintained well, and interference due to phase shift caused by slight rotation of the upper and lower molds can be prevented. Furthermore, when the first and second interlocking members and the rotational drive device are connected, a smooth connection operation is performed, and problems such as the connection member and the rotational drive device not being connected can be prevented. Further, according to the present invention, by interlocking the plurality of molds and the interlocking member, only one power transmission system is required even though the plurality of molds are provided, and the configuration of the power transmission system can be changed. It is easy to use, and when one mold is rotated as appropriate to position it at the origin position, the other mold is also linked and positioned at the origin position at the same time, so by rotating the upper and lower turrets, After indexing to the processing position, there is no need to reposition it to the origin position, improving work efficiency.

Note that the present invention is not limited to the embodiments described above, and can be implemented in other embodiments by making appropriate changes.

[Brief explanation of drawings]

Figure 1 is a front explanatory view of a general turret punch press, Figure 2 is a schematic plan view corresponding to the - line arrow view in Figure 1, and Figure 3 is a view of Figure 2 from below. 4 is an enlarged sectional view corresponding to the - line arrow direction in FIG. 2, FIG. 5 is a sectional view corresponding to the - line arrow direction in FIG. 4, and FIG. 7 is an enlarged view of FIG. 3 in the direction of the - line. FIG. 8 is a view of FIG. 7 in the direction of the - line. FIG. It is. Explanation of symbols representing main parts of the drawings, 13...
...Upper turret, 19...Lower turret, 37
a, 37b... Upper rotating mold holder, 41a, 4
1b... Lower rotary mold holder, 39... First interlocking member, 43... Second interlocking member, 47... First transmission shaft, 51... Second transmission shaft, 89... First engaging portion,
91...second engagement part, 53...rotation drive device.

Claims (1)

[Claims] 1. A turret punch press is constructed by rotatably comprising an upper turret equipped with a large number of upper molds, and a lower turret equipped with a large number of lower molds facing the upper mold. A plurality of upper molds rotatably mounted at symmetrical positions are provided in conjunction with a first interlocking member extending diametrically on the upper turret and rotatably supported, and mounted on the frame or the upper turret. A rotary drive device and a first interlocking member are provided so as to be freely interlocked, a fixing and holding device capable of holding the first interlocking member in an immovable state with respect to the upper turret is attached to the upper turret, and the first interlocking member is attached to the upper mold. a plurality of lower molds correspondingly rotatably mounted at symmetrical positions on the lower turret are provided in conjunction with a second interlocking member extending diametrically and rotatably supported in the lower turret; A rotary drive device attached to the frame or the lower turret and a second interlocking member are provided in a freely interlocking manner, and a fixed holding device capable of holding the second interlocking member in an immovable state relative to the lower turret is attached to the lower turret. Turret punch press is characterized by: