JP3551097B2 - Punch for press working - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a punch for press working, such as a turret punch press or a punch press, used for press working of various materials.
[0002]
[Prior art]
A conventional punch press die is constituted by a combination of a punch and a die, and the structure of the punch for press working is disclosed in, for example, Japanese Patent Application Laid-Open No. 9-103829. That is, a predetermined punch is formed by inserting and engaging an engaging portion corresponding to the engaging groove formed in the punch chip into an engaging groove formed in the punch body and engaging the same.
[0003]
[Problems to be solved by the invention]
However, in the press working punch according to the conventional configuration described above, the position is determined in the X direction, that is, the direction perpendicular to the direction of insertion engagement, but the position is determined by sliding or the like in the Y direction, that is, the insertion engagement direction. However, there is a problem that it is difficult to perform high-precision press working due to mounting accuracy to a press working machine and a relative relationship with a die.
[0004]
An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a punch for press working in which the punch position can be easily adjusted and the press working accuracy is improved.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, a punch for press working according to the present invention is a punch tip having a working portion for performing a predetermined working at a leading end at a cut portion of a mounting piece protruding from a leading end of a punch body. A configuration in which the other end is inserted, and a punch chip and a punch body are fixed at right angles to a depth direction of the cutout portion by a fixing bolt via a holding plate mounted on a cutout provided on both sides of the mounting piece. It was done.
[0006]
ADVANTAGE OF THE INVENTION According to this invention, a punch chip and a punch body can be assembled and connected with high precision and firmness, and the effect of the press punch which improved the press processing accuracy becomes possible.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 of the present invention is characterized in that a mounting piece having a notch in the axial direction is protruded at the tip, a first cutout is provided on one side of the mounting piece, and the other of the mounting piece is provided. A punch body provided with a second notch on the side surface of the punch body, a punch chip mounted in a cutout provided in a mounting piece of the punch body, and provided with a processing portion for performing predetermined processing at a tip thereof; a first holding plate which was charged wearing first notch of the punch body, and a second pressing plate mounted on the second notch of the punch body, the first notch of the punch body and the The first and second holding plates attached to the notches 2 are fixed by a fixing member, so that the punch chip is attached to the notches of the mounting pieces of the punch body . Pressing punches configured to be clamped between presser plates There, an effect that positioning and fixation of the punch chip and the punch body can be reliably.
[0008]
According to a second aspect of the present invention, there is provided the punch for press working according to the first aspect, wherein a backing plate is provided between the other end of the punch chip and the bottom of the cut portion. In addition to the actions described above, it has the effect of dispersing the load at the time of press working and buffering impact.
[0011]
(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an assembly perspective view of a main part of a punch for press working according to Embodiment 1 of the present invention.
[0012]
In FIG. 1, reference numeral 1 denotes a punch tip, which is made of a super-steel material, a ceramic material, a steel material coated with diamond, or the like. Oval hole 4 through which the fixing bolt 9 is inserted.
[0013]
Reference numeral 13 denotes a second holding plate made of a plate-shaped steel material, and a holding hole 14 formed by combining concentric holes having different diameters into which the second fixing bolts 9 are inserted with a step is provided at the center. Reference numeral 10 denotes a first holding plate made of a plate-like steel material or the like. The first holding plate 10 has a screw hole 11 into which a screw portion of the second fixing bolt 9 is screwed at one end, and a first fixing bolt 8 at the other end. A hole 12 is provided.
[0014]
Reference numeral 2 denotes a punch body made of a steel material in the shape of a round bar or a square bar, and a mounting piece 16 having an axial cutout 7 into which a main body of the punch chip 1 is inserted is provided at a tip end thereof. A first notch 6 is provided on one side of the mounting piece 16, and a second notch 5 having a dimension shorter than the notch 6 is provided on the other side.
[0015]
The height of the notch 7 is substantially the same as the height of the main body of the punch chip 1, and the width thereof is also substantially the same as the thickness of the main body of the punch chip 1. The first cutout 6 is provided with a screw hole (not shown) into which the screw portion of the first fixing bolt 8 is screwed.
[0016]
The punch for press working to be mounted on the press working machine is such that the rear part of the main body of the punch chip 1 is inserted to the rear end of the notch 7 and the second holding plate 13 is inserted into the second notch 5 and the first holding plate is inserted. 10 is placed in the first cutout 6. Then, the first fixing bolt 8 is inserted into the insertion hole 12 of the first holding plate 10, and the second fixing bolt 9 is inserted into the holding hole 14 of the second holding plate 13 and the elliptical hole 4 of the punch chip 1. The punch chip 1 is inserted and screwed into the screw portion provided in the cutout portion 6 and the screw hole 11, thereby completing the punch chip 1 by clamping it between the first holding plate 10 and the second holding plate 13 with a predetermined torque. To make it happen.
[0017]
The punch for press working to be mounted on the press working machine is such that the rear part of the main body of the punch chip 1 is inserted to the rear end of the notch 7 and the second holding plate 13 is inserted into the second notch 5 and the first holding plate is inserted. 10 is placed in the first cutout 6. Then, the first fixing bolt 8 is inserted into the insertion hole 12 of the first holding plate 10, and the second fixing bolt 9 is inserted into the holding hole 14 of the second holding plate 13 and the elliptical hole 4 of the punch chip 1. The punch chip 1 is inserted and screwed into a screw portion provided in the cutout portion 6 and a screw hole 11, thereby clamping the punch chip 1 between a pair of the first holding plate 10 and the second holding plate 13 with a predetermined torque. It is completed by doing.
[0022]
【The invention's effect】
As described above, the punch for press working according to the present invention has an effect that the punch tip and the punch body can be positioned and fixed in all directions, the punch position can be easily adjusted, and the press working accuracy is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a main part of a press punch according to a first embodiment of the present invention; FIG. 2 is a perspective view of a main part of a press punch to which the backing plate is mounted;
1, 24 Punch tip 2, 30 Punch body 3 Working part 4, 28 Oval hole 5 Second notch 6 First notch 7 Notch 8 First fixing bolt 9 Second fixing bolt 10 First Holding plate 11, 29 Screw hole 12 Insertion hole 13 Second holding plate 14, 27 Holding hole 15 Backing plate 16 Mounting piece

Claims (2)

A punch having a mounting piece having a notch in the axial direction protruding at a tip thereof, a first notch provided on one side of the mounting piece, and a second notch provided on the other side of the mounting piece. A body, a punch tip mounted in a notch provided in a mounting piece of the punch body, and a tip provided with a processing portion for performing predetermined processing at a tip thereof, and a punch tip mounted in a first notch of the punch body. 1 press plate, a second press plate mounted on the second cutout of the punch body, and the first and second mounts mounted on the first cutout and the second cutout of the punch body. The punch chip is clamped between a pair of the first and second pressing plates in a state where the punch chip is mounted in the cut portion of the mounting piece of the punch body by fixing the pressing plate with a fixing member. Punch for stamping. The punch for press working according to claim 1, wherein a backing plate is provided between the other end of the punch chip and the bottom of the cut portion.

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