JPH06126350A - Turret punch press - Google Patents

Abstract

PURPOSE:To provide each unit punch tool in multitool with an angle allocation function and to provide a simple structure in which punching with various angles may be performed. CONSTITUTION:By the combination of the revolution of multitools MTa and a rotary ram 13, concerning each of the unit punch tools 8 in the multitools MTa, punching with different angles is made possible. That is, the multitool MTa is constituted of a tool holder 31 with plural unit punch tools 8 placed in the circumferential direction and installed each in a freely vertically movable state, and is installed rotatably in a turret 1. A tool allocation rotary mechanism 51, 52 to rotate the multitool MTa is provided. Also, the ram which is driven vertically by a punch driving mechanism 14 is made a rotatable ram 13 provided with the pressurized projecting parts 13c of the unit punch tools 8 in an eccentric position. A ram allocation rotary mechanism 30 by which this rotary ram 13 is rotated is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turret punch press equipped with a multi-tool.

[0002]

2. Description of the Related Art Conventionally, as a punch tool installed on a turret, there is a multi-tool having a plurality of unit punch tools to increase the number of types of punch tools that can be installed on a turret. The selection of the unit punch tool in the multi-tool is performed by rotating the tool holder holding the plurality of unit punch tools and indexing the desired unit punch tool to a position where the ram can press.

[0003]

However, since each unit punch tool in the multi-tool is always driven at the same position, these unit punch tools are tools for machining non-circular punch holes such as rectangles and triangles. When using, only holes in the same direction can be processed. Therefore, when it is necessary to process a punch hole such as a rectangle in various directions, it is necessary to prepare a large number of unit punch tools having the same shape and mount them on the tool holder at different angles. Therefore, the number of types of unit punch tools that can be installed in the turret is limited, and it is difficult to diversify punching and increase efficiency.

Conventionally, in a tool called an index tool, the entire tool is indexed and rotated, which allows the orientation of the punch holes to be freely selected. However, the number of index tools that can be installed on the turret is limited. Further, if each of the unit punch tools in the multi-tool can be indexed and rotated like an index tool, the structure becomes too complicated.

An object of the present invention is to provide a turret punch press having a simple structure in which each unit punch tool in a multi-tool has an angle indexing function so that punching at various angles can be performed. Is.

[0006]

The turret punch press of the present invention makes it possible to perform punching at different angles for each unit punch tool in the multi-tool by combining the rotation of the multi-tool and the rotary ram. It is a thing. That is, a multi-tool having a plurality of unit punch tools arranged side by side in the circumferential direction on a tool holder is rotatably installed on a turret, and a tool indexing rotation mechanism for rotating the multi-tool is provided. Further, the ram which is driven up and down by the punch drive mechanism is a rotatable rotary ram having the pressing protrusion of the unit punch tool at an eccentric position, and a ram indexing rotation mechanism for rotating the rotary ram is provided.

[0007]

Operation: By rotating the multi-tool together with the tool holder by the tool indexing rotation mechanism, the desired unit punch tool is indexed at the desired angle. The rotary ram is rotated by the ram indexing rotation mechanism so that the pressure projection is located above the indexed unit punch tool. By lowering the rotary ram in this state, punch holes having the desired angle can be processed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The upper and lower turrets 1 and 2 have the upper frame portion 3a of the frame 3 at the central boss portions 1a and 2a.
And rotatably installed on the lower frame portion 3b, and they are indexed and rotated in synchronization by a turret indexing mechanism (not shown). The upper and lower turrets 1 and 2 are provided with a plurality of tool mounting holes 4 and 5 which are coaxial with each other and are arranged in the circumferential direction. Will be installed.

Of the tool pair consisting of the punch tool 6 and the die tool 7, some of them are rotary multi-tools MTa (FIG. 2), and the rest are non-rotating multi-tools MTb, index tools IT, And as a normal tool ST. FIG. 2 is a plan view showing a part of the lower turret 2. The rotary multi-tool MTa has a plurality of unit die tools 42 provided for machining non-circular holes, and the non-rotating multi-tool MTb has each unit die tool 42 used for machining circular holes. It is a thing.

These tools MTa, MTb, IT, S
For the rotary multi-tool MTa and index tool IT of T, the turret side mechanism parts 51a and 52a of the tool indexing rotation mechanisms 51 and 52 are respectively provided on the upper and lower turrets 1 and 2 as shown in FIG. It is installed. The tool indexing rotation mechanisms 51 and 52 are arranged near the punch position by the ram 10 so that the upper frame portion 3a and the lower frame portion 3b are close to each other.
Frame side mechanism parts 51b and 52 installed in the
b and the plurality of turret side mechanism parts 51a and 52a. The frame-side mechanism parts 51b and 52b and the turret-side mechanism parts 51a and 52a can be rotated and transmitted by a meshing coupling 53.
52b includes a servomotor for rotation driving and a coupling 53.
And a cylinder device for engaging and disengaging. The turret side mechanism parts 51a, 52a rotate the input shaft provided with the coupling 53 to the worm 56 for tool engagement via the bevel gears 57a, 57b (FIG. 4) in the gear box 54 and the transmission shaft 55. It is something to convey.

FIG. 1 shows a state in which the rotary multi-tool MTa is indexed to the punch position by the ram 10. The ram 10 is driven up and down by a punch drive mechanism 14, and includes an upper ram 11 and an intermediate ram 1 that are sequentially connected in the vertical direction.
2 and a rotary ram 13. Upper ram 12
Is pin-connected to the pitman arm 15 in the crank type punch drive mechanism 14, and the intermediate ram 12 is fitted in the guide cylinder 16 of the upper frame portion 3a so as to be able to move up and down.

The rotary ram 13 has a T-shaped head 13 at the upper end.
a is rotatably connected to the key-shaped connecting portion 12a of the intermediate ram 12, the lower surface of the center of rotation is formed on the normal tool pressing surface 13b, and the pressing protrusion 13 for the unit punch tools 8 and 9 is formed.
c is provided so as to project to the eccentric position. Further, key-shaped normal tool engagement pull-up pieces 13d are provided on both sides of the normal tool pressing surface 13b of the rotary ram 13, and the press projection 13 is provided.
At the tip of c, a key-shaped unit punch tool engaging pulling piece 13e
Is provided.

As shown in FIG. 5, a geared ring 19 is fitted to the outer periphery of the rotary ram 13 via a sleeve 18, and the geared ring 19 has a fixed sleeve 20 attached to a ram support member 17 of the upper frame portion 3a. It is mounted so that it can be rotated and is retained. The rotary ram 13 is supported in a sleeve 18 so as to be vertically movable. The geared ring 19 is a worm wheel 2 that meshes with a worm 21.
The rotary ram 13 is provided with two and transmits the rotation to the rotary ram 13 via the key 23 that meshes with the key groove of the rotary ram 13.

The worm 21 is attached to the ram support member 17 as shown in FIG.
Is provided on a rotary shaft 25 supported by a bearing 24 and is connected to an indexing servomotor 29 via pulleys 26, 27 and a timing belt 28. Servo motor 29
Are installed on the upper frame portion 3a as shown in FIG.
The servo motor 29, the worm 21, the ring 19 with gears, and the like constitute a ram indexing rotation mechanism 30.

7 to 9 show a multi-tool MTa. The punch tool 6 in the multi-tool MTa has a tool holder 31 rotatably installed in the tool mounting hole 4 of the upper turret 1 via a fixing sleeve 60, and guide holes at a plurality of circumferential positions of the tool holder 31, respectively. A plurality of unit punch tools 8 that are vertically movable are provided, and a worm wheel 61 that meshes with the worm 56 of the tool indexing rotation mechanism 51 is formed on the tool holder 31.
The tool holder 31 further includes a work holding member 32,
A central pressure member 33 is provided.

Each unit punch tool 8 is for machining a non-circular hole such as a rectangle or a triangle, is fixed to the tool holder 31 with a key 34, and has a tool support spring 35.
Is lifted and supported by the connecting pin 36 (FIG. 8). At the upper end of the unit punch tool 8, a head portion 8a having a larger diameter than the neck portion is provided.

In FIG. 7, the central pressing member 33 is fitted in the inner diameter hole of the tool holder 31 so as to be able to move up and down, and a plurality of support springs 37 provided in the tool holder 31 are used to connect the connecting pin 3 to each other.
It is lifted and supported via 8. The lifting height of each spring 35, 37 is determined by a screw 46 on the upper surface of the tool holder 31.
It is regulated by the retaining plate 39 (FIG. 7) fixed by (FIG. 9). At the upper end of the central pressure member 33, the rotary ram 13
It has a T-shaped head 33a that is pressed against the normal tool pressing surface 13b and engages with the normal tool engagement pulling piece 13d.

The work pressing member 32 has a cylindrical portion at the center of the upper surface fitted in the inner diameter surface of the central pressing member 33 so as to be able to move up and down, and is prevented from coming off with respect to the central pressing member 33 by a stopper bolt 40. The return spring 41 urges downward. Further, the pin 47 engages with the guide slit 48 of the central pressure member 33 to prevent rotation.

Die tool 7 in multi-tool MTa
The unit die tool 42 corresponding to each unit punch tool 8 is provided on the die holder 43. Die holder 43
Is rotatably installed in the tool mounting hole 5 of the lower turret 2 via a fixed sleeve 62, and a worm wheel 63 that meshes with the worm 56 of the tool indexing rotation mechanism 52 on the outer periphery of the upper part.
Is formed.

FIG. 6 shows the index tool IT.
The punch tool 6 of the index tool IT includes a tool holder 65 rotatably installed in the tool mounting hole 4 of the upper turret 1 via a fixed sleeve 64, and the tool holder 6
The tool main body 67 is installed therein so as to be able to move up and down. The tool holder 65 has a tool indexing rotation mechanism 51 on the outer periphery of the upper part.
A worm wheel 66 is formed which meshes with the worm 56 of FIG. The tool main body 67 has a non-circular mold part such as a rectangle at the lower end, is fitted into the tool holder 65 so as to be able to move up and down, and is prevented from rotating by a key 68. At the upper end of the tool body 67, the pressure T is applied by the normal tool pressing surface 13b of the rotary ram 13 and engaged with the normal tool engagement pulling piece 13d.
A shaped head 67a is provided.

The die tool 7 of the index tool IT is
The die body 69 is provided on the die holder 70. The die holder 70 is rotatably installed in the tool mounting hole 5 of the lower turret 2 via a fixed sleeve 71, and a worm wheel 72 that meshes with the worm 56 of the tool indexing rotation mechanism 52 is formed on the outer periphery of the upper part thereof.

The operation of the above configuration will be described. A case where punching is performed using the multi-tool MTa will be described. First, the turrets 1 and 2 are indexed so that the multi-tool MTa comes to the punch position of the ram 10. This allows
Head 33a of central pressure member 33 of multi-tool MTa
Fits inside the normal tool engagement pulling piece 13d of the rotary ram 13. After the turrets 1 and 2 are indexed, the couplings 53 of the upper and lower tool indexing rotation mechanisms 51 and 52 are joined.

Thereafter, the multi-tool MTa is rotated together with the tool holders 31 and 43 by the tool indexing rotation mechanisms 51 and 52 to index the desired unit punch tool 8 in the multi-tool MTa to the desired angle. For example, as shown in FIG. 10 (A), a unit punch tool 8-1 having a rectangular cutting edge 8b is moved relative to the machine coordinate axes X and Y by X.
Index to the right side position that is horizontally long in the axial direction. By rotating the rotary ram 13 with the motor 29 together with the rotation operation of the multi-tool MTa, the pressure projection 13c is indexed to the position of the unit punch tool 8-1.

After that, the ram 10 is lowered by the punch drive mechanism 14 so that the pressing projection 1 of the rotary ram 13 is lowered.
At 3d, the unit punch tool 8-1 is pressed, and the unit punch tool 8-1 performs horizontal rectangular hole drilling.
As shown in FIG. 3B, the unit punch tool 8-1
Is obliquely indexed, and the pressing protrusion 13d of the rotary ram 13 is indexed at this position to perform a punching operation, whereby a rectangular hole long in the diagonal direction is machined.

As described above, by combining the rotation of the multi-tool MTa and the rotation of the rotary ram 13, each unit punch tool 8 in the multi-tool MTa can perform punching at various angles. Therefore, various machining is possible with a small number of tools. Moreover, with a simple configuration in which the ram indexing rotation mechanism 30 is added to the conventional multi-tool MTa,
The punching with various angles described above can be performed.

The following operations are performed in the multi-tool MTa during punching by the multi-tool MTa. That is, in FIG. 7, the central pressing member 33 is pressed by the normal tool pressing surface 13b of the rotary ram 13 and descends together with the work holding member 32, and when the work holding member 32 is in the holding state of the work W, thereafter, the rotary pressing is performed. Only the unit punch tool 8 pressed by the tool pressing protrusion 13d of the ram 13 descends and punches the work W. At this time, the central pressing member 33 is lowered inside the work holding member 32 against the return spring 41 so as not to obstruct the lowering of the rotary ram 13.

When the rotary ram 13 descends to the bottom dead center and enters the ascending process, the punching unit punch tool 8
Is forcibly pulled up by the pulling force of the unit punch tool engagement pulling piece 13e of the rotary ram 13 acting together with the upward biasing of the tool support spring 35. Since the unit punch tool 8 is forcibly pulled up in this way, the unit punch tool 8 is reliably pulled out from the punch hole of the work W, and malfunctions are prevented. Further, the head portion 33a of the central pressure member 33 is also forcibly pulled up by the normal tool engagement pulling piece 13d of the rotary ram 13.

The index tool IT is used by indexing to the position of the ram 10 when a large hole that cannot be machined by the multi-tool MTa is machined in an arbitrary direction. In this case, the index tool IT performs angle indexing by the tool indexing rotation mechanisms 51 and 52 that are shared with the multi-tool MTa.

[0029]

According to the turret punch press of the present invention, a combination of a rotating multi-tool and a rotary ram is used to index the angle of each unit punch tool in the multi-tool and perform punching at that angle. Punching at various angles can be performed with each unit punching tool in the multi-tool, and various processing can be performed. Moreover, the punching of various angles described above can be performed with a simple structure in which the ram indexing rotation mechanism is added to the conventional multi-tool.

[Brief description of drawings]

FIG. 1 is a cutaway side view of an embodiment of the present invention.

FIG. 2 is a partial plan view of the lower turret.

FIG. 3 is a schematic plan view of a ram indexing rotation mechanism.

FIG. 4 is a schematic cutaway plan view of a tool indexing rotation mechanism.

FIG. 5 is an enlarged cutaway side view of a ram indexing rotation mechanism.

FIG. 6 is an enlarged cutaway side view showing the relationship between the index tool and the turret.

FIG. 7 is an enlarged cutaway side view showing the relationship between the multi-tool and the turret.

FIG. 8 is a partial cross-sectional view showing the relationship between the unit punch tool and the tool holder.

FIG. 9 is a plan view of the multi-tool.

FIG. 10 is an operation explanatory diagram of a multi-tool.

[Explanation of symbols]

1 ... Upper turret, 2 ... Lower turret, 3 ... Frame, 6 ...
Punch tool, 7 ... Die tool, 8 ... Unit punch tool, 10
... Ram, 13 ... Rotary ram, 13c ... Pressurizing protrusion, 13
e ... Unit punch tool engagement pulling piece, 14 ... Punch drive mechanism, 19 ... Geared ring, 21 ... Worm, 22 ... Worm wheel, 29 ... Servo motor, 30 ... Ram rotation indexing mechanism, 31 ... Tool holder, 42 … Unit die tools, 4
3 ... Die holder, 51, 52 ... Tool indexing rotation mechanism, 5
1a, 52a ... Turret side mechanism part, 51b, 52b ... Frame side mechanism part, 53 ... Interlocking coupling, 56 ... Worm, 61 ... Worm wheel, 63 ... Worm wheel, IT ... Index tool, MTa ... Multi tool, ST … Regular tools

Claims (1)

[Claims] 1. A multi-tool in which a plurality of unit punch tools are arranged in a circumferential direction in a tool holder and are respectively set up and down freely is installed rotatably on a turret, and a tool indexing rotation mechanism for rotating the multi-tool is provided. A ram that is provided and is driven up and down by a punch drive mechanism is a rotatable rotary ram having a pressing projection of the unit punch tool at an eccentric position,
A turret punch press provided with a ram indexing rotation mechanism for rotating this rotary ram.