JP3211974B2 - Burring mold - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention, folding et al L-shape
The present invention relates to a burring die for performing burring on a vertical portion of a formed work from a horizontal direction .

[0002]

2. Description of the Related Art Conventionally, a two-step burring die used for vertically performing a burring process on a work placed on a die by vertically moving a punch is a die having the same structure as a one-step burring die. And two types of dies incorporating a pilot hole guide pin are generally known.

[0003]

The above-mentioned conventional burring die is also used for performing a one-step burring process. However, in the latter burring die, a scrap is left on the upper surface of the die. Since the work of performing the processing occurs, it is usual to replace the burring die with the former, and in the present situation, the one-step burring process with the latter burring die is avoided in terms of work.

[0004]

Means for Solving the Problems Conventional problems as described above
In view of the above, the present invention provides a die holding press fixed on a base.
A burring die is mounted horizontally on the plate, and
To the die holding plate
Provide a cam that can reciprocate horizontally in the direction
Of the workpiece in cooperation with the burring die
Barry for performing burring on the part from the horizontal direction
Burring die with horizontal mounting of punching punch
In the through hole provided horizontally in the burring die,
And a tapered plan that can be engaged with a pilot hole
Guide pin support member with inner pin at the tip is slidable
The guide pin is inserted through the through hole
Insert the guide pin into the projected state and into the through hole.
The guide pin is provided in the through hole
When communicating with the through hole when the
A hole under the burring die; and
Close the top of the holding plate and the top of the burring die.
This is a configuration provided at approximately the same height .

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings.

[0006] Referring to FIGS. 5 and 6, the burring
The processing die 1 includes a base 3, and a portal frame 5 is provided upright on the rear side (the right side in FIGS. 5 and 6) of the base 3. That is, a back frame 5B is mounted on the base 3 with a plurality of bolts 7 and the like.
R and 5L are integrated with a plurality of bolts or the like. A front frame 5F is mounted on a front upper portion (left side in FIGS. 5 and 6) of the side frames 5R and 5L with a plurality of bolts 9.

An opening 11 which opens upward is formed in the portal frame 5 composed of the back frame 5B, the side frames 5R and 5L, and the front frame 5F. A striker 13 that is hit by a ram drive (not shown) is mounted in the opening 11.

At the rear of the striker 13, there is formed a keyway 15 extending vertically. This keyway 15
A key 17 fitted to the back frame 5B is mounted on the upper portion of the back frame 5B, and serves to position and fix the top dead center of the striker 13.

A guide member 19 is integrated on the base 3 from the inside of the gate-shaped frame 5 to the front (left side in FIG. 6). A U-shaped groove 21 is formed in the upper part of the guide member 19 and the guide member 19 is formed.
The plate 23 is attached with a plurality of bolts 25 on both sides of the upper portion of the front part of the plate.

A cam 27 is provided in the groove 21 of the guide member 19.
Are slidably provided in the front-rear direction (the left-right direction in FIGS. 5 and 6). The rear end of the cam 27 has a slope 2
7S, and an inclined surface 13S formed at the lower end of the striker 13 is in contact with the inclined surface 27S. In this abutted state, the cam 27 has a bolt 29 inserted through the back frame 5B.
Are protrudingly mounted. Further, a spring 31 is interposed between the rear end face of the back frame 5B and the head 29T of the bolt 29 on the outer peripheral portion of the bolt 29, and the cam 27 is moved by the urging force of the spring 31 in FIG. Biased to the right . A punch holding plate 33 on which a burring punch P is horizontally mounted is mounted on a front portion of the cam 27 with a plurality of bolts 35. A plate holder 37 is provided on the outer peripheral portion of the burring punch P. An elastic member 3 such as urethane is provided between flanges provided before and after the plate holder 37.
9 are interposed.

With the above configuration, when the striker 13 is pressed downward by a ram drive (not shown), the striker 13 is guided by the key groove 15 and descends. Striker 1
When 3 is lowered, the cam 27 is guided and moved forward by the guide member 19 in the front-rear direction (the left-right direction in FIG. 5). With the movement of the cam 27, the punch holding plate 3
3, the plate holder 37, the elastic member 39, and the burring punch P are also moved forward together.

The front side on the base 3 (FIGS. 5 and 6)
(Left side in FIG. 3), a die holding plate 41 is attached with a plurality of bolts 43. On both sides of the upper part on the rear side (the right side in FIGS. 5 and 6) of the die holding plate 41, gripping portions 45R for holding the burring die D therebetween and gripping them
45L are integrated. It can be understood from FIGS. 5 and 6.
The upper surface of the die plate 41 and the burring
The upper part of the outer peripheral surface of the die D is provided at substantially the same height.
You .

A work support 47 is provided on the die holding plate 41 side. This work support 47
Is an L-shaped front frame 47F and a side frame 47.
R, 47L. In addition, the work support 47 can be adjusted vertically.

That is, a lock handle 49 is provided on the work support 47, and a scale 51 is mounted on the right side surface of the die holding plate 41. Therefore, after the lock handle 49 is loosened, the work support 47 is adjusted in the height direction in accordance with the height of the work W, the scale of the scale 51 is adjusted to a position to be set in advance, and then the work support 47 is tightened. 47 is positioned and fixed. Thus, the work W
Will be adjusted.

The burring die D is shown in FIGS.
As shown in FIG. 1, a stepped through hole 51 is formed in the horizontal direction, and a guide pin support member 55 having a tapered guide pin 53 at the tip is provided on the right side of the through hole 51 in FIG. Is installed. A female screw 57 is formed on the inner peripheral surface on the left side of the through hole 51 in FIG. 1, and an adjusting screw member 59 is screwed to the female screw 57. The left and right ends of a spring 61 as an elastic member are attached to the right end in FIG. 1 of the adjusting screw member 59 and the left end in FIG. 1 of the guide pin support member 55, respectively.

In the lower right part of the burring die D in FIG. 1, a scum hole 63 communicating with the through hole 51 is formed. Further, a spring operating pin 6 is provided on the outer peripheral surface of the rear large diameter portion of the guide pin support member 55 in FIG.
5 are protrudingly provided. As shown in FIG. 3, a groove 67 is formed on the surface of the burring die D. The groove 67 has a straight portion 67S parallel to the axis of the burring die D, and the straight portion 67S shown in FIG.
At the left end and a bent portion 67B communicating downward at a right angle . The spring for operating the pin 65 is slid from the position B of the straight portion 67S of the groove 67
And can you to positioning and fixing the position A of the bent portion 67B. At this time, as shown in FIG. 4, the guide pin 53 is retracted into the through hole 51, Kas hole 63 through
It is opened to communicate with the hole 51 .

When the workpiece W is placed on the work support 47 and burring is performed on a portion where a pilot hole is formed (burring in two steps), the spring operation pin 65 is moved to the position B in FIG. To be located in
The guide pin 53 is set to the state shown in FIG.
That is, the pilot hole formed in the workpiece W is the guide pin 5
3 and are set so that their axes coincide . In this state, the burring punch P is moved to the left in FIG.

When burring is performed by placing a work W having no prepared hole on the work support 47 (burring in one step), the spring operating pin 65 is moved to the position B in FIG. Is moved from position A to position A and fixed by positioning.
The guide pin support member 55 provided with 3 is set as shown in FIG. In this state, the burring process is performed on the workpiece W by moving the burring punch P to the left in FIGS. In addition, the scraps generated in this case fall from the scrap holes 63 and are removed.

By the cooperation of the burn ring punch P and the bur ring die D configured as above, the burn ring punch P is folded into an L-shape.
Work W with a pilot hole drilled in the bent vertical part
In addition , burring can be easily performed from a horizontal direction on both the workpiece W and the workpiece W having no prepared hole. Even when a burring process is performed on a workpiece W on which a pilot hole has not been drilled, the scrap can be removed from the scrap hole 63 without leaving the scrap on the upper surface of the burring die D. Moreover, the urging force of the guide pin support member 55 can be easily achieved by adjusting the adjusting screw member 59.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes.

[0021]

The present invention can be understood from the above description of the embodiments.
As described above, in the present invention, the burring die D
The guide pin support member 55 slides into the horizontal through hole 51.
The guide pin support member 55
The part has a tapered shape that can be engaged with a prepared hole provided in the work W in advance.
Since the guide pin 53 is provided,
Plan so that when the pilot hole of the work W engages, the axes coincide.
For accurate positioning of the workpiece W
It can be done .

The lower part of the burring die D is
When the guide pin 53 is immersed in the through hole 51,
Since a waste hole 63 communicating with the hole 51 is provided,
When a scrap is generated when machining horizontally on W
Even with this, it is possible to easily remove the above scraps.
There is .

Further, the upper surface of the die holding plate 41 is
The upper part of the rolling die D is provided at almost the same height
As shown in FIG. 5, the vertical
When performing burring from the horizontal direction to the part, L-shaped
Burring as close as possible to the bent part
Things .

[Brief description of the drawings]

FIG. 1 is a sectional view of a burring die showing a main part of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a front view of the burring die shown in FIG. 1;

FIG. 4 is a sectional view of a burring die in use when performing burring processing on a work having no holes.

FIG. 5 is an enlarged sectional view taken along line VV in FIG. 6;

FIG. 6 is a perspective view of a punch press according to an embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 punch press 3 base 13 striker 27 cam 33 punch holding plate 39 elastic member 41 die holding plate 47 work support 49 lock handle 51 through hole 53 guide pin 55 guide pin support member 59 adjustment screw member (adjustment member) 61 spring 63 waste hole 65 Operating pin for spring (positioning pin) 67 Groove

Claims (1)

(57) [Claims] 1. A die holding press fixed on a base (3).
The burring die (D) is mounted horizontally on the plate (41)
And a guide member (19) provided on the base (3).
One that approaches or separates from the die holding plate (41)
And a cam (27) that can reciprocate horizontally in the direction
In (27), the work is performed in cooperation with the burring die (D).
Burring is performed on the vertical part of
Burring punch (P) for horizontal mounting
The burring die of
The work is inserted into the through hole (51) provided horizontally in (D).
(W) A tapered guide pin which can be engaged with a pilot hole provided in advance.
Guide pin support member (55) having a pin (53) at its tip
Are slidably fitted and provided, and the guide pins (5
3) is projected from the through hole (51) and
The guide pin (53) is immersed in the through hole (51).
The guide is provided in the through hole (51) so that it can be positioned freely.
When the pin (53) is immersed, the
The burring hole (63) communicating with (51)
(D), and the die holding plate (4
The upper surface of 1) and the upper portion of the burring die (D) are substantially
A burring mold that is provided at the same height .