JPH089066B2 - Flanging machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flanging apparatus, and is particularly preferably applied to a work in which ends of a work are bent in different directions to form a flange.

(Prior Art) A side member or a cross member W, which is a component of an underbody forming an automobile body, is drawn in a U-shaped cross section as shown in FIG.
Further, welding flanges F1, F2, F3 for joining other components by spot welding are formed at both ends thereof.
Then, as shown in FIG. 8, the flange F1 is
Is formed by bending the end portion f1 formed in the direction "A", and similarly, the flange F2 and the flange F3 have the end portions f2 and f3 respectively "B" and "F" as shown in FIG. It is formed by bending the member body in the “C” direction at a substantially right angle.

Usually, when the flanges F1, F2, F3 are formed by bending such three end portions f1, f2, f3, first, a flat plate-shaped blank cut into a predetermined shape is drawn. , Shape its cross section into a U shape, and then
The ends f1, f2, f3 are bent in two convenient steps using the flanging apparatus shown in FIGS. 5 and 6.

The conventional flanging apparatus shown in FIG. 5 is an apparatus for bending only the end portion f1 of the work W shown in FIG. 7 to form a flange F1, and the work W is placed on the upper surface of the lower holder 101. The punch 102 to be held is fixed, and the punch 1 is also fixed.
Above the 02, an upper holder 103 that moves up and down with respect to the punch 102 is provided. A pad 104 for holding the work W in cooperation with the punch 102 is attached to the upper holder 103 via a spring 109. Further, the end of the work W is attached to a side portion of the upper holder 103. A die 108 for bending the portion f1 in cooperation with the punch 102 is fixed. The punch 10 of the flanging apparatus configured in this way
After the work W is installed at 2, the upper holder 103 is lowered and the end portion f1 is bent to form the flange F1.

On the other hand, the flanging apparatus for the next step shown in FIG. 6 is an apparatus for forming the flanges F2 and F3 by bending the ends f2, f3 of the work W shown in FIG.
A punch 152 for holding the work W is fixed on the upper surface of 151,
An upper holder 153 that moves up and down with respect to the punch 152 is provided above the punch 152. A pad 154 for holding the work W in cooperation with the punch 152 is attached to the upper holder 153 via a spring 159. Further, on the upper surface of the lower holder 151, a slide cam 155 that reciprocates left and right in FIG.
155 are provided via springs 160, 160 respectively, and the pressing surface of the driver 161 fixed to the upper holder 153.
The slide cams 155, 155 are brought close to each other by pressing the pressed surface 163 of the slide cam 155 by the 162. Dies 164 and 164 for forming flanges F2 and F3 by bending the ends f2 and f3 of the work W in cooperation with the punch 152 are fixed to the tip of the slide cam 155, and the work W is attached to the punch 152. After installation, upper holder 1
When 53 is lowered, the drivers 161, 161 slide the slide cam 15
The slide cam 15 is pressed by pressing the pressed surfaces 163, 163 of 5,155.
5,155 is advanced in the direction of the punch 152 so that the end f
It is designed to bend 2, f3.

(Problems to be Solved by the Invention) As described above, in the conventional flanging apparatus, when the end portion f1 and the end portions f2, f3 are bent, the dies 108, 164 move between the end portions of the work W ( In the portion "200" shown in FIG. 7), since they interfere with each other, two steps are required as described above. Therefore, the productivity is lowered and the equipment cost such as the die cost is also great.

The present invention has been made in view of the above problems of the prior art, and is capable of forming a flange by bending a plurality of end portions formed on a workpiece in different directions in one step. The purpose is to provide a device.

(Means for Solving the Problem) The present invention for achieving the above object is a flanging apparatus that forms a flange by bending a plurality of end portions formed on a work in different directions,
The other holder is provided so as to be able to move closer to and away from the punch that is fixed to one holder and holds the work, and the slide cam is provided at the one holder so as to be able to move closer to and away from the punch, and the slide cam , A position at which the end portions are pre-bent with respect to the slide cam and a position separated from the end portions of the plurality of sectional dies that pre-bend the respective end portions when the slide cam approaches the punch And a reciprocating movable member, and a flange processing device for forming a flange on the slide cam by final bending an end part pre-bent by the sectional die.

(Operation) In the present invention configured as described above, first, when the other holder is brought close to one holder in a state where the work is installed on the upper surface of the punch so that the end portion projects, the slide cam is moved. The end portion is pre-bent at a position close to the work and pre-bent by a sectional die provided on the slide cam.

Then, when the slide cam further approaches the work,
The sectional die moves to a position away from the work, and the pre-bent end is subjected to final bending by the processing surface formed on the slide cam to form a flange.

As described above, the flange can be formed by bending the ends having different bending directions by only moving the holder once.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention, and FIG.
The drawing is a view taken in the direction of the arrow D in FIG. 1, and FIGS. 3 and 4 are sectional views taken along the same line as FIG.

First, as shown in FIG. 1, in the flanging apparatus of the present embodiment, the punch 2 holding the work W is fixed to the upper surface of the lower holder 1, and above the punch 2,
An upper holder 3 that moves up and down with respect to the punch 2 is provided. A pad 4 that holds the work W in cooperation with the punch 2 is attached to the upper holder 3 via a spring 10.

Further, on the upper surface of the lower holder 1, a slide cam 5 that reciprocates between a position close to and three positions away from the three ends f1, f2, f3 formed on the work W is spring-loaded.
The pressing surface 17 of the driver 13 fixed to the upper holder 3 presses the pressing surface 18 of the slide cam 5 to move the slide cam 5. There is. That is, the slide cam 5 is biased by the spring 12 in a direction in which the slide cam 5 is separated from the punch 2, and when the upper holder 3 is lowered, the pressing surface 17 of the driver 13 and the pressed surface of the slide cam 5 are pressed. Sliding with 18 causes the slide cam 5 to move in the punch direction. On the other hand, when the upper holder 3 rises, the slide cam 5 moves in a direction away from the punch 2 due to the elastic force of the spring 12.

On the surface of the slide cam 5 facing the punch 2, as shown in the view of the arrow D in FIG.
Three sectioning dies 6,8,9 for pre-bending 1, f2, f3 are mounted via springs 14,15,16, respectively. The sectional die 6 is held by a keeper (not shown) or the like so that it can move only up and down with respect to the slide cam 5, and likewise, the sectional dies 8 and 9 can move only left and right with respect to the slide cam. It is held by a keeper (not shown).

The sectional dies 6, 8 and 9 are biased by respective springs 14, 15 and 16 in the direction of approaching the work W shown in FIG. That is, regarding the sectional die 6 shown in FIG. 1, the position of the sectional die 6 shown in the figure is such that the spring 14 is fully extended, and unless an external force is applied upward in the figure, It is designed to stop at a position. In addition,
Similarly, the sectional dies 8 and 9 shown in FIG. 2 are also spring-biased.

On the surface of each of the sectional dies 6, 8 and 9 facing the work W, a pre-machined surface 11 is formed by cutting off the lower end surface of the sectional dies 6, 8 and 9 at a predetermined angle. When the cam 5 is moved forward with respect to the workpiece W, the end portions f1, f2, f3 contact the pre-machined surfaces 11, 11, 11 and then the end portions along the pre-machined surfaces 11, 11, 11. f1, f2,
The f3 is bent by the scraping angle of the pre-machined surface.

Here, when the slide cam 5 is advanced in the work W direction by the driver 13, the end portions f1, f2, f3 are bent by a predetermined angle by the pre-machined surfaces 11 of the sectional dies 6, 8, 9. , At this time, sectional die 6,8,9
The pre-processed surface 11 comes into contact with the slide surface 19 formed on the side portion of the pad 4 (see FIG. 3), and when the slide cam 5 further advances from this state, the slide surface 19 causes the spring 14 to move. It moves upward with respect to the slide cam 5 against the elastic force (see FIG. 4). Further, when the sectional dies 6, 8 and 9 are moved upward with respect to the slide cam 5 as described above, the slide cam 5 facing the end portions f1, f2 and f3 pre-bent by the predetermined angle is not attached to the slide cam 5. , This end f
A processing surface 7 for finally bending 1, f2, f3 at a right angle to the work W main body to form flanges F1, F2, F3 is provided.

That is, as shown in FIG. 2, the three sectional dies 6, 8 and 9 are in contact with each other as shown by the chain double-dashed line in the figure, together with the slide cam 5 in the end portions f1, f2 and f3 directions. After moving and preliminarily bending each end portion f1, f2, f3 by a predetermined angle, when the slide cam 5 further advances, it moves in a direction away from each end portion f1, f2, f3 as shown by the solid line in the figure. However, at this time, the pre-bent end portions f1, f2, f3 are simultaneously bent by the one processing surface 7 formed on the slide cam 5 to form the flanges F1, F2, F3.

 Next, the operation will be described.

First, a blank W that has been cut into a predetermined shape is formed into a U-shaped cross section by drawing, and a work W in which three end portions f1, f2, and f3 are formed is raised by the upper holder 3. And set it on the upper surface of punch 2. At this time, each of the end portions f1, f2, f3 is in a state of protruding from the side portion of the punch 2 (see FIG. 1).

Then, when the upper holder 3 is lowered, first the pad 4 comes into contact with the main body of the work W and the space between the punch 2 and the work W concerned.
Sandwich. When the upper holder 3 is further lowered, the pressing surface 17 of the driver 13 presses the pressed surface 18 of the slide cam 5, whereby the slide cam 5 resists the elastic force of the spring 12 and the work W direction. Move to. Then, the pre-machined surfaces 11 of the sectional dies 6, 8, 9 attached to the slide cam 5 come into contact with the ends f1, f2, f3,
The three ends f1, f2, f3 are simultaneously bent at a predetermined angle along the pre-processed surface 11. At this time, the pre-processed surface 11 is in contact with the slide surface 19 formed on the pad. From this slide surface 19, in the sectional die 6 in FIG. In this case, the force is applied in the left direction, and in the sectional die 9, the force is applied in the right direction.

When the upper holder 3 further descends, the slide cam 5 further advances with respect to the work W, and the sectional die 6 moves upward with respect to the cam slide 5 by the slide surface 19. Then, the processed surface 7 formed on the slide cam 5 comes into contact with the pre-bent end portion f1 and the final bending process is performed to form the flange F1. Similarly, even in the sectional dies 8 and 9, the slide surface separates from the work W, and the processed surface 7 of the slide cam 5 finally bends the ends f2 and f3 to form the flanges F2 and F3. It will be.

After the bending process is completed in this way, the upper holder 3 is raised, but the slide cam 5 is released from the pressing force of the driver 13.
Move away from. At the same time, the force applied from the slide surface 19 of the pad 4 to the sectional dies 6, 8 and 9 is also released, and the elastic repellency of the springs 14, 15 and 16 restores the original position. When the upper holder 3 further rises, the pad 4
Also, with this, the work W is lifted and the grip of the work W is released. The workpiece W flanged in this way is taken out from the punch 2 and conveyed to the next step.

As described above, in the present embodiment, it is possible to mold a work conventionally molded in two steps in one step, and it is possible to improve productivity and reduce equipment costs.

(Effect of the Invention) As described above, according to the present invention, it is possible to perform flange processing in which one end is bent at a bending direction and the other end is bent to form a flange in one step, and productivity is improved, and the equipment is improved. The cost can be reduced.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a view taken in the direction of arrow D of FIG. 1, and FIGS. 3 and 4 are the same as FIG. 1 for explaining the operation of the embodiment. Sectional views along the line, fifth and sixth
FIG. 7 is a longitudinal sectional view of a main part showing a conventional flanging device,
The drawing is a perspective view showing the work, and FIGS. 8 and 9 are sectional views taken along the lines VIII-VIII and IX-IX in FIG. 7, respectively. A, B, C ... Bending direction, f1, f2, f3 ... End, F1, F2, F3 ... Flange, W ... Work (side member), 1 ... Lower holder (one holder), 2 ... Punch, 3 ... Upper holder (other holder), 4 ... Pad, 5 ... Slide cam, 6 ... Sectional die, 7 ... Processing surface.

Claims (1)

[Claims] 1. A flanging apparatus for forming a flange by bending a plurality of end portions formed on a work piece in different directions, and moving the proximately away from a punch which is fixed to one holder and holds the work piece. The other holder is freely provided, and a slide cam is provided to the one holder so as to be movable toward and away from the punch. When the slide cam comes close to the punch, the end portion of each slide cam is provided. A plurality of sectional dies for pre-bending are provided so as to be reciprocally movable between a position for pre-bending an end of the slide cam and a position separated from the end, and the sectioning die is attached to the slide cam. A flange processing device provided with a processing surface for forming a flange by finally bending the end portion preliminarily bent by.