JPS6349334A - Work reversing device in turret punch press - Google Patents

Abstract

PURPOSE:To prevent the scratch of a work and to improve the working efficiency by providing the table to rotate a work on the table for the work loading and arranging the attraction means of the work on the rotation table thereof. CONSTITUTION:A bearing 17 is provided on a work loading table 3 and a work rotating table 19 is supported freely rotatably in directions E, F via a shaft 19a. The magnet 20 as the attraction member is annularly arranged on the outer peripheral part of the table 19. When a work 25 is carried onto the table 3, the work 25 is clamped by a clamp device and a punching is performed in order between a punch 12 and die 11 within the stroke range thereof first, then, after releasing the clamp the work 25 is attracted by the magnet 20 and the remaining punching is continued by rotating the table 19 180 deg. as well. With this method, the scratch of the work 25 is prevented and the working efficiency is improved as well.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention can automatically reverse a workpiece. This invention relates to a work reversing device in a turret punch press.

(b), Prior Art Conventionally, in a turret punch press, in order to process a long workpiece, the end of the workpiece is held fixed by a workpiece clamping device, and the workpiece clamping device is moved appropriately. A predetermined punching process is performed by sandwiching the workpiece between the die and punch provided on the lower turret and the upper turret. At this time, the entire machining length of the long workpiece is If the stroke is longer than the stroke that the workpiece can move, the worker releases the fixed holding relationship between the workpiece and the workpiece clamping device during machining, turns the workpiece over, and removes one end of the workpiece that was previously held fixed. The other end, which is opposite to the workpiece, is fixedly held by a workpiece clamping device, and the punching operation is continued.

(C) 0 Problems to be Solved by the Invention However, with this method, the operator must turn over the workpiece one by one and hold the other end of the workpiece fixedly in the workpiece clamping device during machining. There was a drawback that efficiency decreased. Also,
Work.

When the workpiece is made of a soft material, there is a problem in that when the worker turns the workpiece over, the workpiece comes into contact with other protruding members, etc., and the surface of the workpiece is likely to be scratched.

In order to eliminate the above-mentioned drawbacks, the present invention has been developed to invert a workpiece in a turret punch press that can automatically reverse the workpiece without requiring an operator and without causing scratches on the workpiece. The purpose is to provide equipment.

(d) Means for solving the 5 problems, that is, the present invention provides a work rotation table (19) rotatably provided on the table (3), and the table (3)
A workpiece suction means (20) is provided in the workpiece.

Note that the numbers in parentheses are for convenience, indicating corresponding elements in the drawings, and therefore the descriptions herein are not limited to the descriptions on the drawings.The following r (e) 0
The same applies to the column "Effect".

(e) 9 Effects Due to the above-described configuration, the present invention operates so that when the workpiece is reversed, the workpiece (25) rotates together with the workpiece rotation table (19) while being sucked by the workpiece suction means (2o). .

(f), Example An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a diagram showing an embodiment of a work reversing device according to the present invention.

FIG. 2 is a diagram showing another embodiment of the work reversing device according to the present invention.

FIG. 3 is a front view showing an example of a turret punch press to which an embodiment of the work reversing device according to the present invention is applied, and FIG. 4 is a cross-sectional view of FIG. 3.

FIG. 5 is a plan view of FIG. 4.

As shown in FIG. 4, the turret punch press 1 has a C-shaped frame 2 consisting of a lower frame 2a and an upper frame 2b. 2c. An auxiliary table 3b is provided above the table 3 in FIG. 5 in a manner continuous with the upper side of the table 3 in the figure, and guide rails 3a, 3a are provided on the table 3 as shown in FIG. As shown, arrow A is in the horizontal direction in the figure.

They are provided in parallel in the B direction. guide rail 3a,
3a, a driving device 5 is supported so as to be movable and driving in the directions of arrows A and B. The driving device 5 has one main body 5a. motor 5
b and a bearing 5c are provided between the drive motor 5b and the bearing 5c.

A drive screw 5d is rotatably provided via a shaft coupling 5e. Note that a boss portion 6a that constitutes the work clamp device 6 is screwed into the drive screw 5d.

The work clamp device 6 has a slide portion 6b to which a boss portion 6a is fixed, and the slide portion 6b is connected to the drive device 5.
It is supported on a guide surface 5f formed on the left side surface in the figure so as to be slidable in the directions of arrows C and D, which are directions perpendicular to the direction of arrow 1B.

Note that two clampers 6c, 6c, which can grip the ends of the workpiece, are provided at both the upper and lower ends in the figure of the slide portion 6b. Further, the lower frame 2a is provided with a bearing 2d, and a drive screw 2e is rotatably supported by the bearing 2d.

A bearing 5g of the drive device 5 is screwed onto the drive screw 2e, and a drive motor (not shown) is rotatably connected to the right end of the drive screw 2e in the drawing.

On the other hand, a lower turret base 7a and an upper turret base 7b are respectively provided at the left ends of the lower frame 2a and upper frame 2b in FIG. The formed lower turret 9 and upper turret 10 are rotatably supported in the directions of arrows E and F in the figure via shafts 9a and 1°a. Lower turret 9 and upper turret 10
As shown in FIG.
Row sprocket 13 is mounted w1. A rotation drive system such as a chain (not shown) is connected to the upper sprocket 13a of the two-row sprocket 13, and a lower sprocket 13b of the second-row sprocket 13 and a sprocket 21a constituting a work reversing device 116 according to the present invention, which will be described later. A chain 15 is stretched between.

The work reversing device 16 is provided on the table 3 at a predetermined distance above the lower turret 9 in FIG. 5, and the work reversing device 16 is fixed to the table 3 as shown in FIG. It has a bearing 17 provided therein. Bearing 17
, a work rotation table 19 formed in a circular shape is provided.
On the outer periphery of the workpiece turning table 19, which is rotatably supported in the directions of arrows E and F via a shaft 19a, an electromagnet 2o as an adsorption member is provided in the form of a ring. . The aforementioned sprocket 21 is attached to the lower end of the shaft 19a fixed to the work rotation table 19 in FIG.
a is fixed.

Further, as shown in FIG. 4, a striker 32 is located at a position corresponding to the predetermined striking position SP of the upper frame 2b.
The striker 32 is provided movably and driven in the directions of arrows G and H, and the striker 32 is connected to a striker drive motor (not shown) provided on the upper frame 2b.
It is connected via a brake 33, a clutch 35, etc. provided in the.

Since the turret punch press 1 has one or more configurations, when processing a workpiece 25 made of a magnetic material that has the property of being attracted to a magnet, the workpiece 25 is first mounted on the table 3, and the fifth The right end 25a in the figure is
It is fixedly held by the clamper 6C16C of the workpiece clamping device 6.

Next, in this state, drive the drive motor (not shown),
The drive screw 2e is rotated, and the drive device 5, which is screwed together with the drive screw 2e through the bearing 5g, is moved from the standby position x1 shown by the solid line in FIG. 5 in the direction of arrow A, and the drive motor 5b is driven. Rotate the drive screw 5d, and
d and the work clamp device 6 screwed together via the boss portion 6a.
is appropriately moved along the guide surface 5f of the drive device 5 in the directions of arrows C and D.

Then, the machining start point of the workpiece 25 fixedly held by the workpiece clamping device 6 is set at the predetermined impact position SF shown in FIG.
5, that is, the primary is positioned at a position corresponding to the position where the striker 32 is provided, and the upper turret 10 and the lower turret 9 are synchronously rotated in the direction of arrow E or F,
The punch 12 and die 11 used for processing are positioned at a predetermined punching position SP facing the striker 32.

Next, via a striker drive motor (not shown), etc.
The workpiece 25 is punched by reciprocating the striker 32 in the direction of the arrow GH and moving the punch 12 in the direction of the die 11 so that the workpiece 25 is sandwiched between the punch 12 and the die 11. However, the punch 12 and die 11
After the punching process is performed, the drive device 5 is
By driving a drive motor (not shown) together with the workpiece clamping device 6, the workpiece clamping device 6 is further moved in the direction of arrow A or B via the drive screw 2e.

By driving the drive motor 5b, it is appropriately moved in the direction of arrow C or D. Then, the work clamp device 6
The workpiece 25 clamped in the direction of arrow A or B also
It is further moved in the direction of arrow C or D as appropriate. In this way, a predetermined part of the workpiece 25 to be punched next by the punch 12 is positioned at a predetermined striking position SP, and in this state, the striker 32 is reciprocated in the directions of arrows G and H, and the punch 12 is moved in the direction of the die 11. The punching process is performed by sandwiching the workpiece 25 between the punch 12 and the die 11.

In this way, the drive device 5 is moved to the stroke L shown in FIG.
1, the work clamp device 6 is moved in the directions of arrows A and B, and the work clamp device 6 is moved in the directions of arrows C and D, and the striker 32 is reciprocated in the directions of arrows G and H.
By moving and driving the die 11 in the direction of the die 11, a predetermined punching process is performed on the workpiece 25 shown by the imaginary line in Fig. 1 in the range of machining length L2 corresponding to the stroke L1 (that is, the range shown by diagonal lines in the Fig. 1). go.

Note that since the drive device 5 can only move in the directions of arrows A and B within the range of the stroke L1, the range of machining length L3 of the left half of the workpiece 25 in the figure is as follows.
Therefore, in order to punch out the range of machining length L3 of the workpiece 25, the workpiece 2
Flip 5.

The left end portion 25b in the figure needs to be fixed and held by the work clamp device 6.

To do this, first move the drive device 5 in the direction of arrow A or B.
The workpiece clamp device 6 is moved in the direction of arrow C, and the workpiece 25 is positioned so that the center portion of the workpiece 25 in FIG. . When the center of the workpiece 25 is positioned on the workpiece turning table 19, an electromagnet 2 provided on the outer circumference of the workpiece turning table 19 is activated.
Energize 0. Then, since the workpiece 25 is a magnetic material that has the property of being attracted to a magnet, it will be attracted to the electromagnet 2o.

Note that the attraction surface 20a of the electromagnet 2o and the upper surface 3c of the table 3 and the auxiliary table 3b in FIG.

Since the workpieces 25 are assembled at the same level, even if the workpiece 25 is attracted to the electromagnet 20, no distortion occurs in the workpiece 25.

When the workpiece 25 is attracted to the electromagnet 20, the fixed holding relationship between the clampers 6c, 6c of the workpiece clamping device 6 and the right end portion 25a of the workpiece 25 is released. Next, in this state, without moving the work clamp device 6 in the directions of arrows C and D, the drive device 5 is moved in the direction of arrow B and positioned at the standby position X1 shown in FIG. When the drive device S is positioned at the standby position X1, the two-row sprocket 13 fixed to the lower end of the boss portion 9c of the lower turret 9 in FIG. By driving a rotation drive system such as a chain, it is rotated by an appropriate angle in the direction of arrow E or F. Then, the lower turret 9 has two rows of sprockets 13
At the same time, it rotates by an appropriate angle in the E or F direction. In addition, the workpiece turning table 19, together with the electromagnet 2o provided on the upper surface of FIG. 1 in the E or F direction via the shaft 19a.
80 @ rotate. As a result, the workpiece 25 attracted to the electromagnet 20 is rotated by 180° in the E or F direction, that is, reversed.

When the work 25 is thus reversed, the left end 25b of the work 25 in FIG. 5 is positioned to face the clampers 6c, 6c of the work clamp device 6. When the left end portion 25b faces the clampers 6c, 6c, the drive device 5 is appropriately moved from the previous standby position Xl in the direction of arrow A, and the clampers 6c, 6c grip the left end portion 25b. position to the desired position. When the clampers 6c, 6c are positioned at a position where they can grip the left end portion 25b, the left end portion 25b is fixedly held by the clampers 6c, 6c.

Next, in this state, the workpiece was placed on the upper surface of the rotating table 19. The electromagnet 20 is demagnetized to release the attraction relationship between the electromagnet 20 and the workpiece 25. Electromagnet 20 and work 2
5 is released, the drive device 5 is moved in the direction of arrow A or B, and the work clamp device 6 is moved in the direction of the arrow.

In this way, the machining start point set within the range of machining length L3 in FIG. Punch 1 used for processing
2 and the die 11 are positioned at a predetermined striking position SP, and processing is performed.

Next, the drive device 5 is further driven to move in the directions of arrows A and B, and the workpiece clamp load 6 is further moved in the directions of arrows C and D.
The punch 12 and the die 11 are used to continuously punch out a range of processing length L3 of No. 5.

In this way, by punching the range of machining lengths L2 and L3 of the workpiece 25, the stroke L of the drive device 5 is
It is possible to punch out a workpiece 25 having a total machining length L4 (=L2+L3) that is approximately twice that of L1.

In this embodiment, as a mechanism for rotationally driving the workpiece rotation table 19 in the directions of arrows E and F, as shown in FIG. The rotational drive system such as
3. Via the chain 15 and sprocket 21a,
Although the case of a connected configuration has been described, a rotational drive mechanism as shown in FIG. 2 can also be used.

That is, a workpiece turning table motor 22 is fixedly installed below the workpiece reversing device 16 in FIG. 2, and a gear 22b is installed at the upper end in FIG. establish. On the other hand, at the lower end of @19a fixed to the work rotation table 19,
The gear 21b is fixed and the gear 22 described above is connected to the gear 21b.
b are engaged with each other to form a rotational drive mechanism. When rotating the workpiece turning table 19 by 180 degrees in the direction of arrow E or F using the rotational drive mechanism, first drive the workpiece turning table motor 22, and drive the drive @ 22a together with the gear 22b to a predetermined position. Rotate the angle. Then, the work rotating table 19 rotates 1800 times in the direction of arrow E or F via the gear 21b that meshes with the gear 22b and the shaft 19a.

Furthermore, in this embodiment, when reversing the workpiece, a case has been described in which the lower turret 9 and the upper turret (-10) are rotated synchronously in the directions of arrows E and F. arrows E, F independently of
Of course, it is also possible to rotate it in the direction.

Furthermore, in this embodiment, a case has been described in which the electromagnet 20 is used as the @ attachment means of the workpiece reversing device 16;
The adsorption means is not limited to the electromagnet 20.

Of course, it is also possible to use vacuum suction using air pressure. Furthermore, it goes without saying that the adsorption means may be constructed using a combination of the electromagnet 20 and a vacuum suction system using air pressure.

(g) 0 Effects of the invention As explained above, according to the invention, Table 3 shows the following:
A work rotation table 19 is provided so as to be freely rotatable, and an electromagnet 20 is attached to the table 3. It is configured with a workpiece suction means such as a vacuum suction means.

By rotating the workpiece 25 together with the workpiece turning table 19, the reversal operation of the workpiece 25 can be performed automatically without an operator. Further, the workpiece 25 moves on the table 3 in the direction of arrow E while being attracted to the workpiece rotation table 19.

Since the workpiece 25 is rotated in the F direction, even if the workpiece 25 is made of a soft material, the workpiece 25 is less likely to be scratched due to the reversing operation, and the processing quality can be maintained.

[Brief explanation of drawings]

FIG. 1 is an enlarged view showing one embodiment of the work reversing device according to the present invention, FIG. 2 is a front view showing another embodiment of the work reversing device according to the present invention, and FIG. 3 is a front view showing another embodiment of the work reversing device according to the present invention. FIG. 4 is a side view of FIG. 3, and FIG. 5 is a plan view of FIG. 4. 1...-Turret punch press 3...-Table 9...Lower turret

Claims (1)

[Scope of Claims] A turret punch press having a table on which a work can be mounted and a lower turret rotatably provided on the table, comprising: a work rotation table rotatably provided on the table; A workpiece reversing device for a turret punch press configured with a workpiece suction means.