KR950009145B1 - Punch die set - Google Patents

Abstract

No content.

Description

[Name of invention]

Punch die set

[Brief Description of Drawings]

1 is a block diagram of an embodiment of the present invention.

2 is a cross-sectional view taken along arrow A-A of FIG.

3 is a cross-sectional view taken along arrow B-B in FIG. 1.

4 is a perspective view for explaining the positioning means in the present invention.

5 is a configuration diagram of a conventional example.

Detailed description of the invention

[Technical Field]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch die set mounted on a punching press or the like and used for punching or blanking a sheet, and particularly, a punch die set capable of facilitating the exchange of punches and dies and at the same time improving processing accuracy. It is about.

[Background]

Conventionally, a punch die set shown in FIG. 5 is known as a punch die set for performing punching, blanking, or the like of a plate material (hereinafter referred to as a workpiece).

5 is a principal longitudinal sectional view showing an example of a conventional punch die set. In the figures, 41 is a punch, 42 is a die, 43 is a die fixing screw, 44 is an anti-rotation pin, 45 is a work piece, 46 is a set holder, 47 is a sleeve, 48 is a stripper, 49 is a punch-through hole, 50 is a stripper Spring, 51 is punch body, 52 is punch holder part, 53 is parallel reference plane, 54 is punch body screw connection part, 55 is parallel reference jig plate, 56 is punch pressing part, 57 is punch pressing part screw connection part, 58 is a punch head, 59 is a punch pad 60 is a spring for a punch body.

In FIG. 5, the spring 48 is formed in a hollow hollow cylinder shape with a bottom, and is configured to be slidably inserted up and down in the sleeve 47 secured to the set holder 46 by an adhesive, and at the same time, for a stripper. It is supported on the set holder 46 via the spring 50. Further, a punch through hole 49 through which the punch 41 penetrates is formed at the bottom of the stripper 48.

The punch body 51 is formed in a hollow cylindrical shape with a bottom and is configured to be slidably inserted into the stripper 48, and the punch 41 is fixed by fixing means such as adhesion or caulking at the bottom. The punch folder 52 to be mounted is formed. Further, the punch main body 51 has a parallel reference plane 53 formed by cutting a part of the outer circumferential surface, and this parallel reference plane 53 is an end face of the parallel reference jig plate 55 provided on the set holder 46. Since it is comprised so that it may contact with slidingly, rotation of this punch main body 51, ie, rotation of the said punch 41 can be regulated. And the punch main body 51 is provided with the punch main body screw engaging part 54 in the inner periphery of the upper end part. The punch main body screw engaging portion 54 is a so-called female screw, and is screwed with the punch pressing portion screw engaging portion 57 described later.

The punch pressing portion 56 has a punch pressing portion screw engaging portion 57 that is screwed with the punch body screw engaging portion 54. The punch pressing portion screw engaging portion 57 is a so-called male screw, and is screwed with the punch main body screw engaging portion 54 so that the punch pressing portion 56 and the punch main body 51 are integrally coupled to each other. In addition, the punch pressing portion 56 is coupled to the punch body 51 in the form of pressing the punch pad 59. The punch pad 59 can prevent the punch 41 from escaping upward and set the thickness appropriately to adjust the punching stroke. In addition, a punch body spring 60 is interposed between the punch tooth portion 56 and the stripper 48.

The die 42 is mounted at a position opposite to the punch 41 of the set holder 46. Therefore, the die 42 is fixed by the die fixing screw 43 and the rotation is prevented by the die rotation preventing pin 44.

As mentioned above, although the structure of the conventional punch die set shown in FIG. 5 was demonstrated, the operation | movement of this conventional punch die set is demonstrated below. This punch die set is set on a table of a press, for example, and the punch head 58 is pressed downward by a ram (not shown) of a press or cylinder. When the punch head 58 is pressed, the elasticity of the stripper spring 50 is smaller than the elasticity of the punch body spring 60, so that the stripper spring 50 is first contracted so that the stripper 48 This stripper 48 is pushed down until the bottom surface contacts the workpiece 45. Thereafter, the punch body spring 60 is contracted so that the punch pressurizing portion 56 and the punch body 51 are pushed down by a predetermined stroke to the punch 41 against the work piece 45 placed on the die 42. Perforation processing, blanking processing and the like.

Generally, in punching, blanking, etc. by a punch die set, a process shape does not have a constant shape and it is common to change suitably. The punches and dies used in the punch die set need not only be replaced with those in the shape corresponding to the above processing shape, but also the shape of the punch through hole provided in the stripper needs to be changed.

In the conventional example shown in FIG. 5, the punch 41 and the die 42 must be replaced as well as the stripper 48 having the through-hole 49 corresponding to the change of the processing shape. Although it is difficult to replace the punch 41 and the die 42, the exchange of the stripper 48 is very difficult and the amount of work required for the replacement becomes large. Therefore, since the stripper 48 requires a considerable amount of work for exchange, and is formed in a hollow cylindrical shape with a bottom, the punch through hole 49 formed in the bottom of the stripper 48 is used to determine the position of the punch 41 and Machining is not easy because it must be formed corresponding to the shape.

In addition, in order to improve the processing accuracy, the vertical position of the punch 41, the punch through hole 41, the punch through hole 49, and the die 42 coincides with each other and the angle position in each horizontal direction is used. You can't match exactly. By the way, in the conventional example shown in FIG. 5, in particular, the die 42 sets the angular position in the horizontal direction by the rotary anti-rotation pin 44, and the set holder 46 by the die fixing screw 43. Since the setting of the vertical position and the angular position in the horizontal direction seems to be correct at first glance, it is minutely spaced between the die 42 and the die fixing screw 43 and the set holder 46, It is difficult to accurately set the vertical position and the angular position in the horizontal direction only by pressing by the fixing screw 43. Therefore, since fine adjustment is required, there is a problem in that the labor of the replacement work is increased, which is undesirable.

[Initiation of invention]

An object of the present invention is to provide a pinch die set that can facilitate the exchange of punches and dies, and can also improve processing accuracy.

The punch die set of the present invention comprises a stripper formed in a hollow shape with a bottom and configured to be able to slide up and down with respect to the set holder, a punch body configured to be able to slide up and down with respect to the inner surface of the stripper, and this punch A punch die set having a punch mounted at a lower end of the main body to penetrate the bottom of the stripper, and a die provided to the set holder at a interval for inserting a workpiece, the die being provided in the set holder, wherein the stripper is formed in a hollow form. A stripper main body and a stripper plate detachably attached to the lower opening end of the stripper main body, wherein the stripper plate is configured to have punch through holes through which punches pass.

Best Mode for Carrying Out the Invention

1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is a sectional view taken along arrow AA of FIG. 1, FIG. 3 is a sectional view taken on arrow BB of FIG. 1, and FIG. 4 is a positioning means in the present invention. The perspective view for demonstrating is shown.

In Fig. 1, reference numeral 1 denotes a punch, 2 die, 3 workpiece, 4 set holder, 5 sleeve, 6 stripper body, 7 stripper plate, 8 punch through hole, 9 stripper parallel reference plane, 10 and 11 are springs, 12 is punch body, 13 is punch holder, 14 is punch plate, 15 is punch parallel reference plane, 16 is punch head, 17 and 18 is stroke adjusting screw, 19 is parallel reference jig plate, 20 is The die holder 21 denotes a die pad.

In the embodiment of FIG. 1, the stripper body 6 is formed in a hollow cylindrical shape and is configured to be slidable up and down in the sleeve 5 secured to the set holder 4 with an adhesive. The stripper plate 7 in which the punch through hole 8 through which the punch 1 penetrates is formed in the lower opening end of 6) is detachably attached. Moreover, the stripper main body 6 has the stripper parallel reference plane 9 formed by cutting | disconnecting a part of stripper main body 6 corresponding to the parallel reference jig board 19 mentioned later, and this stripper parallel reference plane 9 is the said The rotation of the stripper main body 6 is regulated by being configured to slidably adhere to the end face of the parallel reference jig plate 19 provided on the set holder 4. The rotation restriction of the stripper main body 6 will be described later with reference to FIG. 3, and the mounting state of the stripper plate 7 will be described later in detail with reference to FIGS. In addition, the stripper main body 6 is supported on the set holder 4 via the stripper spring 10.

The punch main body 12 is configured to be slidable up and down in the stripper main body 6, and at the same time, the punch holder 13 in which the punch 1 is detachably mounted by fixing means such as adhesion or caulking at the bottom is provided. The punch holder 13 is built in and is detachably held while being pressed by the punch plate 14. In addition, the punch main body 12 has a parallel reference plane 15 formed by cutting a part of the outer circumferential surface, and this parallel reference plane 15 is an end face of the parallel reference jig plate 19 provided on the set holder 4. Since it is comprised so that it may contact with slidingly, it is comprised so that rotation of this punch main body 12, ie, rotation of the said punch 1, can be regulated. The rotation control aspect of this punch body 12 will be described later in detail with reference to FIG.

The punch body 12 has a punch head 16 protruding from the upper end, and is provided with stroke adjusting screws 17 and 18 screwed to the punch head 16 to adjust the punching stroke.

The punch main body 12 and the stripper main body 6 are interposed between the punch main body springs 11. The die 2 is detachably mounted to face the punch 1 and the stripper plate 7 via the die pad 21 on the die holder 20 embedded in the set holder 4. The mounting state of the die 2 will be described later in detail.

As mentioned above, although the structure of the punch die set of this invention shown in FIG. 1 was demonstrated, the main part structure which is a characteristic of this invention is demonstrated in detail with reference to FIGS.

FIG. 2 is a cross-sectional view taken along arrow A-A in FIG. 1 for explaining the mounting state of the stripper plate 7. 4 is a perspective view for explaining positioning means (positioning protrusions, positioning recesses described later). In the drawings, reference numeral 22 denotes each positioning protrusion, 23 positioning recesses, 24 each fixing screw, and 25 a fixing screw insertion hole, and the remaining symbols correspond to FIG.

As shown in FIG. 2 in FIG. 2, the positioning projections 22 are formed so as to protrude from the joining surface of the stripper plate 7 with respect to the stripper main body 6, respectively. The positioning recesses 23 are formed on the bottom surface of the stripper body 6 so as to correspond to the positioning protrusions 22, respectively. The positioning projection 22 and the positioning recess 23 have a Y axis parallel to the stripper parallel reference plane 9 and the punch parallel reference plane 15 (shown in FIG. 3) and this Y axis. It is formed with respect to the orthogonal X axis. In addition, the punch through hole 8 formed in the stripper plate 7 is also processed based on the X and Y axes. Therefore, when attaching the stripper plate 7 to the stripper main body 6, the positioning projection 22 is inserted into the positioning recess 23 and fixed with the fixing screw 24. As shown in FIG.

In this way, since the punch through hole 8, the positioning projection 22, and the positioning recess 23 are all processed based on the X and Y axes, when the stripper plate 7 is replaced, The positioning of the punch through hole 8 corresponding to the punch 1 is so automatic. In FIG. 2 and FIG. 4, although the positioning projection part was provided in the stripper board 7, and the positioning recessed part was provided in the stripper main body 6, the positioning projection part was provided in the stripper main body 6. The recess for positioning may be provided in the stripper plate 7. Therefore, these positioning protrusions and positioning recesses are called positioning means in the future.

Although not shown, the positioning means is also provided between the die holders 20 of the die 2 and between the lower end face of the punch body 12 and the punch plate 14. Therefore, as described above, the die 2 and the punch plate 14 can be easily replaced with high accuracy.

FIG. 3 is a cross-sectional view taken along arrow B-B in FIG. 1 for explaining the rotation regulating aspects of the stripper main body 6 and the punch main body 12. Reference numerals in the figures correspond to the first diagrams, respectively.

In FIG. 3, the stripper parallel reference plane 9 formed on the stripper main body 6 and the punch parallel reference plane 15 formed on the punch main body 12 are parallel reference jig plates 19 installed on the set holder 4. It is configured to be in contact with the end face of the slide. Therefore, the stripper main body 6 or the punch main body 12 cannot be rotated even when it operates up and down.

Here, the fixing method of the sleeve 5 and the die holder 20 is demonstrated. The sleeve 5 and the die holder 20 are fixed to the set holder 4. If the fixing positions of the sleeve 5 and the die holder 20 are not correct, high precision machining cannot be performed. Therefore, in the present invention, the fixing jig is used as follows so that the fixing position of the sleeve 5 and the die holder 20 is accurate.

The fixing jig has a cylindrical shape having an outer diameter that can be inserted into the inner circumferential surface of the sleeve 5 so as to be slidably movable, and having positioning means installed on the die holder 20 on a lower surface thereof, and a corresponding positioning means. Phase or columnar. Therefore, in a state where other than the sleeve 5 and the die holder 20 are not attached, the fixing jig is inserted into the sleeve 5 until it reaches the die holder 20 from above, and the fixing The positioning means of the tool jig and the positioning means of the die holder 20 are matched. In this state, the sleeve 5 and the die holder 20 are brought into the correct position by filling and solidifying the adhesive material at a predetermined distance between the outer circumferential surfaces of the sleeve 5 and the die holder 20 and the set holder 4. It is fixed.

As mentioned above, although the structure of the punch die set of this invention was demonstrated, operation | movement of the Example shown in FIG. 1 is demonstrated from now on. This punch die set is set on a table of a press, for example, and presses the punch main body 12 downward by applying pressure to the stroke adjusting screws 17 and 18 by a press or a cylinder ram (not shown). When the punch body 12 is pressurized, since the elasticity of the stripper spring 10 is smaller than that of the punch body spring 11, first, the stripper spring 10 is contracted and the stripper plate 17 is prevented. The entire punch mechanism is pushed out until it comes into contact with the workpiece 3. Thereafter, the spring 11 for the punch main body is contracted, so that the punch 1 is pushed out by a predetermined stroke together with the punch main body 12. After that, the spring 11 for the punch main body is contracted, so that the punch 1 with the punch main body 12 is pushed out by a predetermined stroke, and the punch 1 is pressed against the workpiece 3 placed on the die 2. Drilling, blanking, and the like are performed.

In addition, when there is a change in the processing shape or the like, as described above, the punch 1, the stripper plate 7 and the die 2 together with the punch holder 13 and the punch plate 14 are replaced with high precision. Can also be processed. In addition, it goes without saying that the punch stroke is adjusted by the stroke adjustment screws 17 and 18 as needed.

In the present invention, the stripper is composed of a stripper body formed in a hollow cylindrical shape and a stripper plate detachably mounted to the lower opening end of the stripper body and having a punch through hole through which the punch penetrates. There is no need to replace the stripper body to facilitate punch replacement.

Moreover, since positioning means are provided between the stripper main body and the stripper plate, between the die and the die holder, and between the punch main body and the punch plate, it is possible to facilitate positioning in the circumferential direction when replacing the punch and the die. At the same time, the processing accuracy can be improved. As described above, according to the present invention, it is possible to provide a punch die set capable of facilitating the exchange of punches and dies in accordance with changes in the machining shape and the like, and at the same time improving the processing accuracy.

[Industrial use]

As described above, the punch die set according to the present invention is useful as a punch die set which is mounted on a punching press or the like and is used for sheet metal working, blanking, and the like. Suitable for use as a set of punch dies.

Claims (5)

A stripper formed in a hollow shape with a bottom and configured to be able to slide up and down with respect to the set holder 4, a punch body 12 configured to be able to slide up and down with respect to the inner surface of the stripper, and the punch body A punch die set having a lower end portion of (12) mounted to penetrate the bottom of the stripper and a die (2) provided in the set holder (4) so as to face the punches at intervals for inserting the workpiece. The stripper is composed of a stripper body 6 formed in a hollow shape, and a stripper plate 7 detachably mounted to a lower opening end of the stripper body 6, wherein the stripper body 6 and the stripper plate ( 7) has positioning means for determining a position in the circumferential direction, through which the stripper plate 7 is detachably attached to the stripper body 6; The stripper plate 7 has a punch-through hole 8 through which the punch penetrates, and the circumferential direction (first) positioning means includes a plurality of positioning projections formed on the surface of the stripper plate 7. 22) and a plurality of positioning recesses (23) formed in the lower end surface of the stripper body (6) corresponding to the protrusions (22). 2. A die according to claim 1, further comprising a die holder (20) on which the die (2) is placed below an installation position of the die (2), wherein the die (2) and the die holder (20) have a circumferential direction with respect to the circumferential direction thereof. And a positioning means for determining a position, through which the die (2) is removably fixed onto the die holder (20). The punch plate (12) according to claim 1, wherein the punch body (12) and the punch plate (14) provided on the lower end surface of the punch body have positioning means for determining a position with respect to the circumferential direction thereof. A punch die set, characterized in that (14) is detachably fixed to the punch body (12). 3. The method according to claim 2, wherein the positioning means for positioning the die (2) and the die holder (20) correspond to a plurality of positioning protrusions formed on the surface of the die holder (20) and the protrusions. A punch die set comprising a plurality of positioning recesses formed on the die (2) surface. 4. The (third) positioning means for positioning the punch body 12 and the punch plate 14 corresponds to a plurality of positioning projections formed on the surface of the punch plate 14 and the projections. And a plurality of positioning recesses formed on the surface of the punch body (12).