JPH05169254A - Manufacture of body frame at plate machine - Google Patents

Abstract

PURPOSE:To provide the manufacture of body frame which can suitably set the natural frequency of the body frame at the plate machine. CONSTITUTION:At the manufacturing method of body frame 5 providing a pair of side frames 5a, 5b at the plate machine, the 1st process that an end of the 1st rib 21 is welded to a side frame 5a of one hand and an other end of the 1st rib 21 is welded to a side frame 5b of an other hand, and the 2nd process that after the 1st process is finished, an end of the 2nd rib 21 having a differential length from the 1st rib 21 is welded to the side frame 5a of one hand by forcibly deforming the side frame 5a of one hand, and the other end of the 2nd rib 25 is welded to the other side frame 5b of the other hand by forcibly deforming the side frame 5b of the other hand, are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a body frame in a plate material processing machine such as a turret punch press.

[0002]

2. Description of the Related Art A main body frame in a plate material processing machine such as a conventional turret punch press has a pair of side frames. Explaining the method of manufacturing the main body frame, one end of the plurality of ribs is welded to one side frame, and the other ends of the plurality of ribs are welded to the other side frame.
After the welding work is finished, the main body frame is completed by shifting the main body frame to the annealing step.

[0003]

By the way, when the frequency of vibration forcibly applied to the main body frame by plate material processing (for example, punching processing) approaches the natural frequency of the main body frame, the main body frame resonates and noise is generated. However, there is a problem in that the work environment is significantly impaired.

Therefore, an object of the present invention is to provide a method of manufacturing a body frame in which the natural frequency of the body frame can be appropriately set in order to solve the above problems.

[0005]

In order to solve the above-mentioned conventional problems, according to the present invention, in a method for manufacturing a main body frame having a pair of side frames in a plate material processing machine, one side The first step of welding one end of the first rib to the frame and the other end of the first rib to the other side frame, and forcibly deforming the one side frame after the first step is completed. , One end of a second rib having a different length from the first rib is welded to one side frame,
A second step of forcibly deforming the other side frame and welding the other end of the second rib to the other side frame.

[0006]

In the above structure, the first frame is provided on the one side frame.
One end of the rib is welded, and the other end of the first rib is welded to the other side frame.

After the above welding is completed, the one side frame is deformed to give an appropriate internal stress to the one side frame. Then, one end of a second rib having a length different from that of the first rib is welded to one side frame.

Similarly, by deforming the other side frame, appropriate internal stress is applied to the other side frame. Then, the other end of the second rib is welded to the other side frame.

As a result, the main body frame of the plate material processing machine can be manufactured. Here, by applying an appropriate internal stress to the pair of side frames, the body frame can be set to an appropriate natural frequency.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 3, a turret punch press 1 as a plate material processing machine, for example, has a bridge type main body frame 5 having a recess 3 in the center, and this main body frame 5
A table 7 for supporting the plate material W provided in the recess portion 3, a positioning device 9 for positioning the plate material W, and an upper turret 13 provided with a punch 11 suspended from above in the recess portion 3, Below the upper turret 13, a lower turret 17 having a die 15 and a turret vertically hung from above the main body frame 5 are provided.
The striker 19 for hitting the punch 11 of FIG.

The main body frame 5 of the turret punch press 1 is provided with a pair of side frames 5a and 5b which are opposed to each other on the left and right sides (front and back sides in FIG. 3 of the drawing). It is connected by the rib. The drive device of the upper turret 13 and the lower turret 17, the ram cylinder of the striker 19, and the like are
It is housed and fixed between the side frames 5a and 5b.

A method of manufacturing the body frame 5 will be described with reference to FIG.

One end of the first rib 21 is welded to the one side frame 5a, and the other end of the first rib 21 is welded to the other side frame 5b.

After the welding work is completed, the one side frame 5a is pushed inward from the outside of the one side frame 5a by appropriately operating, for example, a hydraulic jack 23 as a pushing device. 5a is deformed inward. By this, one side frame 5a
It is possible to apply an appropriate internal stress to. A second frame shorter than the first rib 21 is provided on the one side frame 5a.
One end of the rib 25 is welded.

Similarly, by appropriately operating the hydraulic jack 27 to press the other side frame 5b inward from the outside of the other side frame 5b, the other side frame 5b can be deformed inward. .. This makes it possible to apply an appropriate internal stress to the other side frame 5b. Then, the second rib 2 is provided on the other side frame 5b.
Weld the other end of 5.

The above-mentioned operation is performed by the pair of side frames 5a,
5b is performed in the upper part and the lower part.

The body frame 5 can be manufactured as described above.

According to the present embodiment as described above, in the process of manufacturing the body frame 5, the pair of side frames 5a, 5a
By imparting an appropriate internal stress to b, the body frame 5 can be set to an appropriate natural frequency. Therefore, the frequency that is forcibly applied to the body frame 5 by the punching process does not approach the proper natural frequency of the body frame 5, and the resonance of the body frame 5 can be suppressed as much as possible. Therefore, the noise caused by the vibration of the main body frame 5 can be suppressed as much as possible, and the working environment can be improved.

Next, another method for manufacturing the body frame 5 will be described with reference to FIG.

One end of the first rib 29 is welded to the one side frame 5a, and the other end of the first rib 29 is welded to the other side frame 5b.

After the above welding work is completed, one side frame 5a is pushed outward from the inside of one side frame 5a by appropriately operating, for example, a hydraulic jack 31 as a pushing device. 5a is deformed outward. By this, one side frame 5a
It is possible to apply an appropriate internal stress to. Then, one end of the second rib 33 longer than the first rib is welded to the one side frame 5a.

Similarly, by appropriately operating the hydraulic jack 35 to push the other side frame 5b outward from the inside of the other side frame 5b, the other side frame 5b can be deformed outward. .. This makes it possible to apply an appropriate internal stress to the other side frame 5b. Then, the second rib 3 is formed on the other side frame 5b.
Weld the other end of 3.

In addition, the above-mentioned operation is performed by the pair of side frames 5a,
5b is performed in the upper part and the lower part.

The main body frame 5 can be manufactured as described above.

The second manufacturing method of the main body frame also has the same effect as the first manufacturing method.

The present invention is not limited to the description of the embodiment as described above, but can be carried out in various other modes by making appropriate changes.

[0027]

As will be understood from the above description of the embodiments, according to the present invention, the main body frame is formed by applying an appropriate internal stress to the pair of side frames in the process of manufacturing the main body frame. It can be set to an appropriate natural frequency. Therefore, the frequency that is forcibly applied to the main body frame by the plate material processing does not approach the proper natural frequency of the main body frame, and it is possible to suppress the resonance of the main body frame as much as possible. Therefore, it is possible to suppress the increase in noise caused by the vibration of the main body frame as much as possible, and it is possible to improve the working environment.

[Brief description of drawings]

FIG. 1 is a side view of the main body frame in FIG. 3, showing an outline of a first manufacturing method of the main body frame.

FIG. 2 is a diagram showing an outline of a second manufacturing method of the main body frame.

FIG. 3 is a side view of a turret punch press.

[Explanation of symbols]

 1 Turret Punch Press 5 Main Frame 5a, 5b Side Frame 21 First Rib 25 Second Rib 29 First Rib 33 Second Rib

Claims (1)

[Claims] 1. A method for manufacturing a main body frame comprising a pair of side frames in a plate material processing machine, wherein one end of a first rib is welded to one side frame and the other end of the first rib is attached to the other side frame. Welding the first step, and after the first step is completed, one side frame is forcibly deformed and one end of the second rib having a different length from the first rib is welded to the one side frame. And a second step of forcibly deforming the other side frame and welding the other end of the second rib to the other side frame. Method.