JP3376061B2 - Punch / die set - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch and die set for punching and / or recessing a plate or other structural workpiece. Punch and die set that is useful in processing holes with different dimensions and / or recesses, including the processing of workpieces with complex cross-sectional shapes, such as extruded profiles made of aluminum alloys, lightweight steel profiles, etc. It is about. 2. Description of the Related Art FIG. 5 is a longitudinal sectional side view of a main part showing a conventional general-purpose punch / die set, which is used, for example, when drilling a flat plate. In FIG. 5, reference numeral 1 denotes a frame formed of, for example, a steel material so as to have a substantially U-shaped space 2 in a longitudinal sectional shape, and a pair of punches and dies can be disengaged from an open end of the frame 1. Provide coaxially. [0003] That is, reference numeral 3 denotes a die, which is formed of, for example, tool steel in the form of a short cylinder having a through hole 4 in the center, and fitted below the open end of the frame 1. Next, reference numeral 5 denotes a stripper, which is formed in a hollow cylindrical shape and is slidably fitted in a vertical direction into a bush 6 fitted above the open end of the frame 1. A spring 7 urges the stripper 5 upward through a snap ring 8 provided on the stripper 5. Reference numeral 9 denotes a punch, which is formed in a solid columnar shape from, for example, tool steel, and is inserted into the stripper 5 so as to be relatively movable in the vertical direction. The punch 9 is urged upward by a spring 12 interposed between a punch head 10 fixed to an upper end thereof and a seat ring 11 provided at an upper end of the stripper 5. A key stopper 13 is fixed to the upper surface of the open end of the frame 1 via a set screw 14 and has a function of preventing the stripper 5 and the punch 9 from rotating. Reference numeral 15 denotes a positioning pin for positioning the frame 1. With the above structure, the frame 1 is mounted on a press table (not shown) via the positioning pins 15 and mounting members (not shown), and the workpiece 1 is mounted on the die 3.
If the punch 9 is lowered via a press ram (not shown) while the workpiece 6 is placed, the workpiece 16 can be drilled. In this case, the stripper 5 presses the workpiece 16 until the punch 9 descends, performs the drilling, and then rises.
6 prevents displacement and jumping. The above-mentioned conventional punch and die set is useful when the workpiece 16 is a flat plate, but has a complicated cross-sectional shape such as an aluminum sash. At the same time, in the case of a work material having a relatively large cross-sectional contour space, the work material interferes with each of the constituent members, so that a predetermined drilling process and other forming processes cannot be performed. is there. For this reason, it is necessary to prepare a dedicated molding die corresponding to the cross-sectional shape of each workpiece, which causes a problem that the manufacturing cost increases and the manufacturing period is long. In the case of a workpiece having a complicated cross-sectional shape such as the aluminum sash, the means for supporting the workpiece during drilling is also complicated, and a dedicated supporting means must be provided. There is also. Therefore, the size of the molding die is increased, and not only is safety unsatisfactory, but also the working efficiency is reduced. Further, since most of the conventional molding dies are dedicated dies as described above, for example, when the diameter of a hole to be processed is changed, is it necessary to significantly modify the dedicated dies? , A separate dedicated mold must be re-manufactured,
There is a problem that the soaring mold manufacturing cost is further spurred. The present invention solves the problems existing in the prior art described above, and is a punch / die set that can be flexibly adapted even in forming a workpiece having a complicated cross-sectional shape, and can be manufactured at a short delivery time and at low cost. The purpose is to provide. [0010] To achieve the above object, according to an aspect of, the present invention, detachably to the open end of the frame formed in a substantially U-shaped in longitudinal section through the steel material One side of a frame in a punch and die set in which a formed forming punch and die are provided coaxially and opposed to each other, and holes and / or recesses are formed in a workpiece.
At least a part of the surface and the inner surface on the die side of the space in the frame
And the inner surface parallel to the axis of the punch and die, respectively.
The planar reference surface is provided, comprising a die on the top and one side, a die holder formed by providing a reference surface on the bottom surface and the inner side an upright surface, through the respective reference plane between the sky of the frame The technical means of positioning and fixing was adopted. In the present invention, a pair of punches and dies can be formed not only for punching but also for forming concave portions, drawing and other forming processes. Further, a plurality of pairs of punches and dies may be provided, and the pairs may be operated simultaneously or in time series, or a driving means for operating the punches and / or dies may be incorporated. [0012] The die holder may be provided with or support means for supporting the workpiece. According to the above-mentioned structure, it is possible to universally cope with a workpiece having a complicated cross-sectional shape, and it is possible to manufacture the same at a short delivery time and at a low cost. FIGS. 1 and 2 are a longitudinal sectional view and a plan view, respectively, showing a main part of an embodiment of the present invention.
Are indicated by the same reference numerals. 1 and 2, 2
Reference numeral 1 denotes a die holder, which is formed in a substantially rectangular parallelepiped shape by a metal material having good workability such as soft iron, and a die button 22 forming a die is fitted on an upper portion thereof, and a space formed in a substantially U-shape. 2 Reference numeral 23 denotes a discharge hole, which is provided coaxially below the die button 22 to discharge the punched pieces. The lower surface 24 and the upright surface 25 on the rear side of the space 2 of the frame 1 and a part of one side surface 26 of the frame 1 near the space 2 are formed as reference surfaces. On the other hand, a lower surface 27, a rear upright surface 28, and one side surface 29 of the die holder 21 are formed as reference surfaces, and these reference surfaces are brought into close contact with and matched with the reference surface of the frame 1 so that the die holder 2
Positioning 1 is performed. Reference numeral 30 denotes a clamp plate. That is, by mounting the die holder 21 in the space 2 as described above, the axes of the punch 9 and the die button 22 can be maintained the same. After positioning, the die holder 21 is fixed to the frame 1 by mounting bolts (not shown). 31 is a mounting bolt hole. Reference numeral 32 denotes a jig for supporting a part of the edge of the workpiece 16 which is, for example, an aluminum sash, and is fixed to the die holder 21 by an appropriate means. That is, the column 34 is erected on the substrate 33 and a part of the edge of the workpiece 16 is supported at the upper end of the column 34. Reference numeral 35 denotes an escape portion, which is formed by cutting a part of the die holder 21 to avoid interference with the workpiece 16. Reference numeral 36a denotes an abutting portion, which is provided above the die holder 21 and is used for positioning the workpiece 16 by abutting a part of the edge of the workpiece 16. With the above structure, the frame 1 is mounted on a press table (not shown) via the positioning pins 15 and the mounting members in the same manner as shown in FIG.
2 and the workpiece 16 is placed on the die holder 21;
If a part of the edge is brought into contact with the abutting portion 36a and positioned, and the punch 9 is lowered via a press ram (not shown), the workpiece 16 can be drilled. In the case of processing a workpiece 16 having another cross-sectional shape, it is only necessary to prepare a die holder 21 corresponding to the cross-sectional shape, and most of the other components are shared. Can be Note that the die holder 21 is detachable, and the punch 9 and the die button 2 are only required to match the three reference planes as described above.
Since the coaxiality of No. 2 can be ensured, the exchange of the die holder 21 can be completed easily in a short time. Even when the hole diameter for the same workpiece 16 is changed, only the punch 9 and the die button 22 need to be replaced, and other components can be shared, so that tool management is extremely easy. . FIGS. 3 and 4 are a longitudinal sectional side view and a plan view, respectively, of a main part showing another embodiment of the present invention, and the same parts are denoted by the same reference numerals as in FIGS. 1 and 2. 3 and 4, reference numeral 36 denotes a sheet member.
And the seat ring 11 in FIG. FIG.
4 and FIG. 4, since the width of the frame 1 is small, the punch head 10 and the sheet
6 are formed in a strip shape, and two springs 12 for urging the punch head 10 upward are used. A guide pin 37 is provided near the end of the punch head 10 and penetrates the sheet member 36 so as to slidably engage with a guide hole 38 provided in the frame 1. The operation of the above configuration is the same as that shown in FIGS. 1 and 2, and it is possible to perform drilling on a workpiece 16 having a complicated cross section such as an aluminum sash. The same applies to the mode of attachment / detachment / replacement of the die holder 21, and the sharing of the constituent members and other advantages are also common. In this embodiment, the case where the material to be processed is an aluminum sash has been described. However, the present invention is not limited to this, and the present invention can be applied to a light-weight steel material or the like.
In addition, as a processing mode, not only drilling but also concave forming, drawing, and other forming can be performed. In addition, by installing a plurality of punch and die sets of the present invention,
The workpiece can be sequentially fed or processed simultaneously. For example, instantaneous processing of a long workpiece can be performed by using a long press in combination. Further, a configuration in which a die is integrally provided on the upper portion of the die holder may be adopted. In this case, a predetermined heat treatment may be performed after the die holder having the die is processed into a predetermined shape. As described above, the present invention has the following configuration and operation, and can provide the following effects. (1) The frame mounting space and the die holder are each provided with three reference surfaces, and a die button is fitted or a die is provided based on these, so that the die holder can be easily mounted, Coaxiality between the punch and the die button can be ensured. (2) In the case of changing the hole diameter, the die holder can be shared by merely replacing the die button or the die holder. (3) The production cost can be reduced by 40 to 50% as compared with the conventional dedicated molding die. (4) It takes only 10 to 15 days to design and manufacture the punch and die set, which can be halved compared to 20 to 30 days in the case of the conventional dedicated mold. (5) The size and weight are reduced to 1/2 to 1/3 and the size to 1/3 to 1/4 as compared with the conventional one, so that safety and work efficiency can be greatly improved. (6) Since the die holder is easy to process, even a workpiece having a complicated cross-sectional shape such as an aluminum sash can be easily and promptly handled.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a main part showing an embodiment of the present invention. FIG. 2 is a plan view showing an embodiment of the present invention. FIG. 3 is a longitudinal sectional side view of a main part showing another embodiment of the present invention. FIG. 4 is a plan view showing another embodiment of the present invention. FIG. 5 is a vertical sectional side view of a main part showing a conventional general-purpose punch / die set. [Description of Signs] 1 frame 9 punch 21 die holder 22 die button

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B21D 28/00-28/36 B21D 22/00-26/14 B21D 37/00-37/20 B21D 47/00-49 / 00

Claims (1)

(57) [Claims] [Claim 1] The steel material has a substantially U-shaped section.
Provided a punch and die for molding which is detachably configured on the open end of the frame formed in shape shape and coaxially opposite,
In a punch and die set for forming a hole and / or a concave portion in a workpiece , at least a part of one side surface of a frame and the
Parallel to the inner surface of the die side of the space and the axis of the punch and die
The respective flat reference surface provided on an inner surface, comprising a die on the top and on one side, a die holder formed by providing a reference surface on the bottom surface and the inner side an upright surface, said each of between empty the frame A punch and die set characterized by being positioned and fixed via a reference surface.