JPH0623434A - Method and device for bending metal base stock - Google Patents

Abstract

PURPOSE:To make a working opration efficient and to hold high working precision by making the bending head of a press machine turnable by a prescribed turning angle. CONSTITUTION:By energizing a heater 33, a heating part is heated and by revolving a motor 15, the press machine is shifted with the engagement of a pinion 16 and a rack 17 and reversely rotating a motor 36, a pinion 37 is reversely turned, and by engaging with the rack 17, the heating device 33 is retracted. Since a bending head 18 is further engaged with an open string 26, the ram 22 of a fluid pressure cylinder 21 is lowered and by lowering a presser head 20 to the same direction as the ram, the open string 26 is bent to a prescribed shape with the cooperation of the presser head 20 and a receiving die 23. Successively, the press machine 1 is retracted and by advancing the open string 26, the heating device 33 is again advanced to the open string direction 26. On the other hand, the main shaft 3 in the press machine 1 is turned by 180 deg. by revolving a motor 8 through gears 5, 7. In such manner, the press machine 1 is advanced and the heater 33 is retracted and hot working is executed and the open string 26 can be bent to a reverse direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for bending a metal material for bending the metal material in different directions.

[0002]

2. Description of the Related Art Conventionally, in order to bend a metal material (for example, a long plate, a long bar) at a plurality of right angles or other arbitrary angles,
The metal material was moved to match the bending direction. In this case, the position of the press die of the press machine and the position of the pressure head were always the same (Actual Publication No. 2-81717).

[0003]

According to the above-mentioned conventional bending device, the fixing direction of the metal material is changed every time bending is completed.
Not only does it take a long time to prepare, but when the weight of the metal material becomes large (for example, about 300 kg of sasara girder), the worker becomes hard labor, and when using the power machine to change the position of the metal material, the time and labor increase further. There was a problem.

[0004]

SUMMARY OF THE INVENTION However, according to the present invention, the bending head of the press machine is rotated so that the metal material is moved only in the longitudinal direction thereof. This made it possible to improve accuracy.

That is, the invention of the method is such that a metal material is a receiving die,
In the method of bending by sandwiching and pressing with a pressure head, the metal material characterized by changing the relative angle between the metal mold and the pressure head with respect to the metal material each time the bending direction of the metal material changes. The bending method is a long metal plate made of a metal material. Further, the relative angle between the metal mold and the pressure head with respect to the metal material is changed stepwise or steplessly. Next, the invention of the apparatus is such that a main shaft is rotatably mounted on a drive housing of a press machine, a rotating means is attached to a base end side of the main shaft, and a press main body is fixed to a tip end of the main shaft. Mainly a pressure head,
Install a receiving die to configure a press machine. A bending device for a metal material, characterized in that a feeding means and a fixing means for the metal material are installed so as to face the press main body of the press machine, and a drive housing of the press machine is rotatably provided with a main shaft. A rotating means is attached to the base end side of the main shaft, a press main body is fixed to the front end of the main shaft, and a pressure head and a receiving die are installed on the press main body to form a press machine. A bending device for a metal material, comprising a metal material feeding means, a fixing means, a positioning means, and a heating means, which are opposed to the main body of the pressing machine. Further, the press machine is installed so as to be able to separate and contact the metal material fixing means in a straight line, and the heating means is a high frequency heating device, and this high frequency heating device is separated from the metal material fixing means. It is installed so that it can be contacted. Further, the fixing means of the metal material is a clamping and fixing device, a width determining device and a positioning device, the press machine is supported movably along the rails, and the moving means of the press machine is a combination of a rack and a pinion. It is a thing.

In the above description, since the press machine can be linearly reciprocated, not only the bending head can be easily rotated, but also the bending position can be easily adjusted.
In addition, since the heating means for the metal material can be separated from and contacted with the metal material, a predetermined temperature (for example, 700
Since it can be heated to ℃) and pressed immediately after that, processing at a specified temperature is easy, and processing that is easy to process and that matches the material of the metal material can be performed.

[0007]

According to the present invention, the press head is moved in and out of contact with the metal material, and the bending head is rotated, so that the bending head can be rotated at a predetermined angle regardless of the metal material. Further, since the heating means can be reciprocally moved, it is possible to heat the processed portion of the metal material to a desired temperature and perform the press work quickly near the temperature.

[0008]

Embodiment 1 An embodiment of the present invention will be described with reference to the drawings.

In the drive housing 2 of the press machine 1, a main shaft 3 is rotatably installed horizontally on bearings 4 and 4, and the main shaft 3
The gear 5 is fixed to the base end of the clutch 6, the gear 5 is engaged with the gear 7 fixed to the output side of the clutch 6, and the input side of the clutch 6 is connected to the output shaft of the motor 8. A detection plate 9 is fixed to the side surface of the gear 5, and the detection plate 9 faces the encoder 10. Wheels 11 and 11 are attached to the lower portion of the drive housing 2, and the wheels 11 and 11 are mounted on rails 12, and the rails 12 are sandwiched in cooperation with auxiliary wheels 13. A motor 15 is fixed to the lower part of one side of the drive housing 2 via a bracket 14, and a pinion 16 fixed to the shaft of the motor 15 meshes with a rack 17 fixed to the rail 12.

A bending head 18 (mainly a press) is fixed to the tip of the main shaft 3. The bending head 18 has a notch 19 having an inverted U-shape on the side surface (FIG. 1). The metal mold 23 corresponding to the pressure head 20 is fixed on the bed 24. The rail 12 is installed on a machine base 25.

On the machine stand 25, a fixed stand 27 of a sasara girder 26 (metal material) is installed at a predetermined distance from the bending head 18 and in front of the machine stand (FIG. 1). On 27, sandwiching rollers 28 and 29 and width determining rollers 30 and 31 of the sasara girder 26 are provided, respectively (FIG. 1).
On the rear side (FIG. 1) of the fixed base 27, a roller receiving roller 32 is slidably installed at a right angle to the rail 12.
A high frequency heating device 33 is installed on the rail 12 on the right side of the fixed base 28 so as to be detachable from and contactable with the sasara girder 26. A motor 36 is fixed to a frame 34 of the heating device 33 via a bracket 35, and a pinion 37 fixed to the shaft of the motor 36 is attached to the rack 17.
Bite into. 38 in the figure is laser marking, 3
Reference numeral 9 is an operation panel.

The bending of the sassar girder 26 will be described in the above embodiment.

First, the sasara girder 26 is placed on the sarusa receiving roller 32, the rod 41 of the fluid pressure cylinder 40 is projected as shown by an arrow 50, and the feeding roller 4 is mounted.
2, 42a, the motor 43 is started, the feed rollers 42, 42a are rotated, and the sassar girder 26 is advanced in the direction of an arrow 44 by a predetermined distance.

In this case, if the mark on the sasara girder 26 is detected by detecting the laser marking 38, the rotation of the motor 43 is immediately stopped to determine the position of the sasara girder. Then, the rod of the fluid pressure cylinder 45 is moved to lower the nip roller 28, and the nip roller 2
The sassar girder 26 is fixed at the present position by the cooperation of 8 and 29.

Next, the motor 36 is rotated and the pinion 37 fixed to the shaft thereof is rotated to move the heating device 33 in the direction of the arrow 46 in FIG. 2 so that the high frequency electrode is applied to the heating portion of the sasara girder. The heating part is rapidly heated by making it correspond and energizing. Then, when the temperature of the heating part reaches 700 ° C, the motor 15 is rotated to fix the pinion 1 to the shaft.
6 and the rack 17 bite together to show the press machine 4
7 (FIG. 3), the motor 36 is rotated in the reverse direction so that the pinion 37 is rotated in the reverse direction.
By engaging with 7, the heating device 33 is retracted in the direction of the arrow 48 (opposite to the above). Immediately after this, the bending head 18 comes to sandwich the sasara girder 26, so if the ram 22 of the fluid pressure cylinder 21 is lowered in the direction of arrow 49 and the pressure head 20 is lowered in the same direction, the pressure is increased. Head 20
And the receiving die 23, the sasara girder 26 is bent into a predetermined shape (FIG. 6, 26a). Next, the motor 15 is rotated in the reverse direction to retract the press machine 1, the motor 43 is rotated to move the sasara girder forward in the direction of the arrow 51, and the motor 36 is rotated to move the heating device 33 to the sasara girder 26 again. Forward in the direction.

On the other hand, the retreated press machine 1 rotates the motor 8 to rotate the main shaft 3 through 180 degrees through the gears 5 and 7.
This rotation angle is accurately regulated by the encoder 10.

In this way, as described above, the press 1
Is moved forward, the heating device 33 is moved backward, and hot press working is performed, so that the sasara girder 26 can be bent in the opposite direction (26b in FIG. 6).

The embodiments of the present invention have been described with respect to pressing sasara girders. The sasara girder is installed and used, for example, as shown in FIG. 5, such as a central portion of the stairs 52 and both side portions 53, 54 and 36. In this case the pillars 55 of the building,
The sasers 26 must be bent along 56, which is easily accomplished with the present invention.

In the above embodiment, the rod 5 of the fluid pressure cylinder 57 is provided on one side of the top portion of the drive housing 2 (FIG. 2).
A hooking rod 59 connected to the bending head 18 is provided, and is hooked with a hooking tool 60 provided on both sides of the bending head 18 to fix the position of the bending head 18.

[0020]

According to the present invention, since the bending head of the press can be rotated by a predetermined rotation angle, even when the metal material is bent a plurality of times at different angles,
There is an effect that the processing work can be made efficient and high processing accuracy can be maintained without rotating the metal material.

[Brief description of drawings]

FIG. 1 is a front view in which a part of an embodiment of the present invention is omitted.

FIG. 2 is a plan view similarly omitting a part.

FIG. 3 is a front view showing a moving state of the pressing machine.

FIG. 4A is an enlarged side view of the same bending head. (B)
Similarly, an enlarged side view when the bending head is rotated.

FIG. 5 is a partial plan view of the stairs.

FIG. 6 is a perspective view of the sasara girder that has also been bent.

[Explanation of symbols]

 1 Press Machine 2 Drive Housing 3 Spindle 9 Detecting Plate 10 Encoder 12 Rail 16, 37 Pinion 17 Rack 18 Bending Head 20 Pressurizing Head 21 Fluid Pressure Cylinder 22 Ram 23 Receiving Mold 25 Machine Stand 26 Sasage Girder 27 Fixing Stand 32 Roller 33 Heating device 28 Laser marking

Claims (9)

[Claims] 1. In a method of bending a metal material by sandwiching and pressing between a metal mold and a pressure head, the metal of the metal mold and the pressure head is changed every time the bending direction of the metal material changes. A method of bending a metal material, characterized by changing the relative angle to the material. 2. The method for bending a metal material according to claim 1, wherein the metal material is a long metal plate. 3. The method for bending a metal material according to claim 1, wherein a relative angle between the metal mold and the pressure head with respect to the metal material is changed stepwise or steplessly. 4. A main body of a press machine is rotatably mounted on a drive housing of a press machine, a rotating means is attached to the base end side of the main shaft, and a main body of the press is fixed to a tip end of the main shaft to form a main body of the press. A press machine is constructed by installing a pressure head and a die. A bending device for a metal material, comprising a feeding means and a fixing means for the metal material, which are opposed to the main body of the press of the pressing machine. 5. A main body of a press machine is rotatably mounted on a drive housing of the press machine, a rotating means is attached to the base end side of the main shaft, and a main body of the press is fixed to a tip of the main shaft to form a main body of the press. A press machine is constructed by installing a pressure head and a die. A bending device for a metal material, comprising a feeding means, a fixing means, a positioning means and a heating means for the metal material, which are opposed to the main body of the pressing machine. 6. The bending apparatus for a metal material according to claim 4, wherein the press machine is installed so as to be able to come into contact with and separate from the fixing means of the metal material in a straight line. 7. The bending apparatus for a metal material according to claim 5, wherein the heating means is a high-frequency heating apparatus, and the high-frequency heating apparatus is installed so as to be able to come into contact with and separate from the fixing means for the metal material. 8. The bending device for a metal material according to claim 4, wherein the fixing means for the metal material is a sandwich fixing device, a width determining device, and a positioning device. 9. The bending apparatus for a metal material according to claim 4, wherein the press machine is movably supported along a rail, and the moving means of the press machine is a combination of a rack and a pinion.