JPS6336940A - Punching device - Google Patents

Abstract

PURPOSE:To eliminate a deflection in the center of an opening part of a table, and to execute working with high accuracy without generating a shift of a working position, and a deformation of a material to be worked, by providing a supporting plate of the material to be worked, being movable by an NC control, on a moving and placing table part. CONSTITUTION:A table 10 moves forward and backward, and to the right and left in the horizontal direction by an NC control. A material to be worked 12 whose position relation to the table 10 is prescribed by a positioning pin 11 which is integrated into the table 10 brought to punching between a punch 14 which is supported by a punch holder 13, and a die button 17 which is integrated into a die plate 15 and supported by a block 16. A supporting plate 18 for receiving the material to be worked 12 slides in a groove 20 which is hollowed out in the table 10, interlocks with a movement of the table, and taken in and out by an NC control. The material to be worked 12 is supported by the supporting plate 18 and the die plate 15, a deflection in the center part is not generated, and working is executed with high accuracy without generating a shift of the working position, and a deformation of the material to be worked 12.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a punching device for punching metals, resins, etc.

2. Description of the Related Art A conventional NC punching device will be explained with reference to the drawings.

FIG. 2 shows the structure of a conventional NC punching device, in which a workpiece 3 positioned on a table 1 by positioning pins 2 moves together with the NC-controlled table 1.
Punching is performed between the punch 5 supported by the punch holder 4 and the die button 8 fitted into the die plate 6 and supported by the block 7, and the workpiece 3 is leveled onto the punch 6 by the stripper 9. By repeating a series of operations up to the time of removal, a predetermined punching process is performed on the workpiece.

Problems to be Solved by the Invention However, with such a structure, if the opening of the table 1 is large relative to the thickness of the workpiece 3, the workpiece 3 will be cut by the table 1 only at the outer periphery. Because it is supported,
Deflection occurs in the center of the workpiece 3 due to its own weight. There is a problem in that this deflection not only causes a shift in the position of the bending process, but also deforms the workpiece.

The present invention does not cause the above-mentioned deflection in the workpiece 3, thereby making it possible to perform highly accurate machining without shifting the machining position or deforming the workpiece 3.

Means for solving the problems The technical means of the present invention for solving the above problems are as follows:
Several movable workpiece support plates are attached to the table 1.

Effects The present invention can obtain the following effects by using the above-mentioned technical means.

In other words, even if the thickness of the workpiece is thinner than the opening of the table, since the support plate supports the workpiece, it will not occur at the center, and errors due to deflection - machining without deformation. can be realized. At this time, since the support plate can be taken in and out according to the movement of the table by NC control, interference between the support plate and the die can be avoided, and punching can still be performed even when using the support plate.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, 10 is a table, and this table 10
is controlled by NC and moves horizontally back and forth and left and right. The workpiece 12 whose positional relationship with the table 1o is defined by the positioning pin 11 incorporated in the table is assembled into the punch 14 supported by the punch holder 13 and the die plate 15, and is inserted into the block 16. Punching is performed between the well-supported die button 17 and □. A support plate 18 for receiving the workpiece 12 slides in a groove 20 dug in the support table 1o by the seven cylinders 1e. This support plate 18
are moved in and out under NC control in conjunction with table movement.

Using this embodiment as described above, when the NC control device recognizes that the 11 Daizu rays will approach the support plate 18 and interfere with it due to table movement, the NC control device will move the cylinder 19 to avoid interference by moving the support plate 18 and retracting it. In the case of FIG. 1, the workpiece 12 is always supported by the three support plates 18 and the die rate 16, and no deflection occurs in the center, and the workpiece 12
2. High precision processing without deformation is possible.

In the above embodiment, four rectangular support plates 1B were used, but depending on the size and shape of the workpiece 12, shapes and quantities other than those described above may be used, and the driving source of the support plates may also be changed. Even if a motor or actuator other than the cylinder is used, the same effect can be obtained as long as it is compatible with NC control.

Further, although this embodiment shows the case where a cutting die is incorporated, the same effect can be obtained when molding, drawing, etc. are used instead.

Effects of the Invention As described above, the present invention provides a support plate for the workpiece that is movable under NC control in the transfer table section of the NC punching device. By eliminating the deflection at the center of the opening, it is possible to achieve high-precision machining without shifting the machining position or deforming the workpiece.

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional perspective view of a punching device according to an embodiment of the present invention, and FIG. 2 is a partial cross-sectional perspective view of a conventional NC punching device. 10...Table, 12...Work material, 14...Punch, 17...Die button/, 1B...Support plate, 19 ······Cylinder.

Claims (1)

[Claims] A punching device that has a punch that punches a workpiece, a transfer table on which the workpiece is placed, and a control unit that controls the operations of the punching device and the transfer table. A punching device, wherein a holding part that holds a workpiece to prevent the workpiece from being bent is configured to be slidable within the transfer table so as not to interfere with the punching device.