JP2601400B2 - Automatic punch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to clarify the position of the center of a circle or a marking line at a predetermined position on the surface of a workpiece, for example.
The present invention relates to an automatic punch for stamping a so-called punch mark in order to form a center hole for drilling.

[0002]

2. Description of the Related Art Conventionally, as an automatic punch of this type, for example, Japanese Utility Model Publication No. 63-34861 or Japanese Utility Model Publication No. 56-540 has been proposed.
As disclosed in JP-A-63-63, there has been known a configuration in which a workpiece is hit with a tip end of a punching rod provided in a punch body, and a punch mark is formed on the workpiece by the hitting force. .

[0003]

However, in the case of these conventional structures, for example, operations such as a hole transfer operation for newly manufacturing the same press punching die and an operation for transferring the center of a hole marked by a hinge to an object to be mounted. There is a disadvantage that the hole transfer operation cannot be performed.

[0004]

SUMMARY OF THE INVENTION The present invention aims to solve such problems and has as its gist, Po
It is provided on the main body of the
Locked in the retracted position by a mooring mechanism that can be released and released
A stamping rod to be held is provided, and the stamping rod is moved from the retracted position of the stamping rod.
In an automatic punch capable of stamping a punch mark on the surface of an object to be stamped by a striking force , the punch
The positioning member can be moved in the body in the axial direction of the punch body
And the stamping rod is moved concentrically to the positioning member.
The positioning member is tapered at the tip of the positioning member.
A bullet that forms a positioning surface and is capable of urging the positioning member
A pressure spring is provided, and the tip of the punch body is
An automatic punch formed on a pressing surface orthogonal to an axis .

[0006]

The striking rod is locked and held in the retracted position by the mooring mechanism.
When the mooring mechanism is released, the embossing rod is pulled by the embossing spring.
Jumps out of the moving position, and
The stamping rod stamps a punch mark on the surface of the workpiece
In other words, this punch body has the axial direction of the punch body
The positioning member is movably provided on the
The spring is urged by the spring and the stamping rod is
Are installed so that they can move freely in a concentric manner.
For example, a profile with an existing hole to be transferred to the surface of the workpiece
The taper formed at the tip of the positioning member by polymerizing the material
Abut the peripheral surface of the existing hole
Pressing surface perpendicular to the axis of the punching rod formed on the tip surface of the body
By contacting the stamping member with the surface of the copying member, the stamping position by the stamping rod is determined following the center of the existing hole.

[0007]

1 to 7 show an embodiment of the present invention. Reference numeral 1 denotes a punch main body, which is formed by screwing a lid-shaped main body 3 on a cylindrical main body 2 and having a sharp tip in the punch main body 1. The stamping rod 4 formed on the punch body 4 is movably disposed, and a stamping spring 5 for projecting the stamping rod 4 is provided.
Is formed on the pressing surface 1a orthogonal to the axis of the arrow.

Reference numeral 6 denotes a position setting mechanism. In this case, a positioning member 7 is movably inserted into the cylindrical main body 2, and a tapered positioning surface 8 is formed at the tip of the positioning member 7. An elastic spring 9 capable of urging the elastic member is interposed between the rear surface of the step portion 7a of the positioning member 7 and the inner surface of the lid-shaped main body 3, and is applied to the cylindrical main body 2 against the rear surface of the step portion 7a of the positioning member 7. A stopper portion 2a that can be contacted is formed, and the stamping rod 4 is concentrically movably mounted on the positioning member 7,
A base hole 7b is formed on the rear side of the positioning member 7, and
Is formed in the large-diameter portion 4a, the bottom surface of the base hole 7b is a stopper portion 7c that can abut on the front side of the large-diameter portion 4a, and the spring receiving ring 10 is fixed to the large-diameter portion 4a. The stamping spring 5 is interposed between the ring 10 and the inner surface of the lid-shaped main body 3.

In this case, a mooring mechanism is provided. In this case, a sliding hole 12 is formed in the lid-shaped main body 3 at right angles to the axis of the punching rod 4 and is displaced.
3 is slidably inserted, one end of the trigger pin 13 protrudes from the outer peripheral surface of the lid-shaped main body 3, and a plug screw 14 is screwed into the slide hole 12. A pressing spring 15 is interposed between the sliding pin 12 and the trigger pin 1.
3, a stopper portion 12a is formed, a narrow neck portion 13a is formed in the middle of the trigger pin 13, and a narrow neck portion 4b is formed in the embossing rod 4. A non-slip groove 4c is formed in a rear end portion of the embossing rod 4. It is formed and configured.

In this embodiment, as shown in FIG. 1, in the state shown in FIG. 1, the stamping rod 4 is gripped at its base end and pulled against the stamping spring 5 as shown in FIG. When the narrow neck portion 4b of the engraved rod 4 reaches the trigger pin 13, the trigger pin 13 is pushed by the pressing spring 15 from the state of FIG. 2 to the outer circumferential surface of the trigger pin 13 as shown in FIG. A part is locked, so that the embossing rod 4 is moored and held in that state as shown in FIG.

In this state, for example, in the case of a hole transfer operation of a press die, the copying member M, which is an old die plate, is overlapped and fixed on the upper surface of a workpiece W, which is a new die plate. Body 1
When the positioning member 7 is inserted into the existing hole N of the copying member M with the positioning, the positioning surface 8 abuts on the peripheral edge of the existing hole N as shown in FIG. , Pressing surface 1 orthogonal to the axis of punching rod 4 of punch body 1
By making a a close contact with the surface of the copying member M, the stamping position P of the stamping rod 4 is determined following the center of the existing hole N.

When the stamping position P of the stamping rod 4 is determined in this manner, when the trigger pin 13 is pushed in against the pressing spring 15, the thin neck portion 13a of the trigger pin 13 is thinned. The locking action is released in opposition to the neck 4b, and the embossing rod 4 jumps out vigorously by the embossing spring 9, and the tip end H of the embossing rod 4 hits the workpiece W by striking. A punch mark will be added to the engraving position P.

[0013] In this manner, the hole transfer operation to the surface of the workpiece W is performed.
Is performed, the existing hole N to be transferred to the surface of the workpiece W is
The scanning member M is superimposed and formed on the tip of the positioning member 7.
The formed tapered positioning surface 8 abuts on the periphery of the existing hole N
And at the end face of the cylindrical body 2 as the punch body 1
Following the pressing surface 1a perpendicular to the axis of the formed punching rod 4
Stamping with a stamping rod by bringing it into close contact with the surface of the member M
Position P can be determined following the center of existing hole N.
Therefore, the structure can be simplified and
The scribing work is not performed on the carved object W, the embossing position P of the embossing rod 4 can be easily determined according to the center of the existing hole N, and the efficiency of punching work can be significantly improved.

Also, as shown in FIG. 7, for example, when punching a punch mark on a workpiece W to be mounted, following the center of an existing hole N defined in a copying member M which is a hinge. Similarly, punching can be performed simply by performing a so-called current transfer.

The present invention is not limited to the above embodiment. For example, the present invention is applicable not only to the case where the existing hole N is a countersunk hole as in the above embodiment but also to a hole without a countersink. Can be.

[0018]

As described above, according to the present invention, the punching rod is a mooring mechanism.
When the mooring mechanism is released
The stamping rod pops out of the retracted position by the stamping spring,
Due to the striking force of the pop-out, the punching rod
The punch mark will be stamped on the surface, this punch book
A positioning member is movable on the body in the axial direction of the punch body
And is urged by an elastic spring.
The stamping rod moves concentrically on the positioning member
When the work is transferred to the surface of the object to be stamped
Is a copying member with existing holes to be transferred to the surface of the workpiece
Polymerized to form a taper at the tip of the positioning member.
The positioning surface contacts the periphery of the existing hole and the punch body
Pressing surface orthogonal to the axis of the punching rod formed on the tip surface of
By making close contact with the surface of the copying member, the stamping position by the stamping rod can be determined in accordance with the center of the existing hole, so that the structure can be simplified and the work to be stamped on the object to be stamped again can be performed. Is not performed, the stamping position of the stamping rod can be easily determined according to the center of the existing hole, and the efficiency of punching work can be significantly improved.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of the drawings]

FIG. 1 is an overall sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the embodiment shown in FIG.

FIG. 3 is an overall sectional view of an operation state of the embodiment shown in FIG. 1;

FIG. 4 is a cross-sectional view of the embodiment shown in FIG. 1 in an operating state.

FIG. 5 is an overall sectional view of an operation state of the embodiment shown in FIG. 1;

FIG. 6 is a perspective view of a use state of the embodiment shown in FIG. 1;

FIG. 7 is a cross-sectional view of another embodiment of the embodiment shown in FIG.

[Explanation of symbols]

 W Workpiece N N Existing hole P Stamping position M Copying member 1 Punch body 1a Pressing surface 4 Stamping rod 5 Stamping spring 7 Positioning member 8 Positioning surface 9 Resilient pressure spring 11 Mooring mechanism 15 Pressing spring

Claims (1)

(57) [Claims] (1) The punch body is elastically protruded by a stamping spring.
With a mooring mechanism that is provided so that it can be biased and that can be released
An embossing rod that is locked and held at a retracted position is provided;
An automatic punch capable of stamping a punch mark on the surface of an object to be stamped by a striking force caused by popping out of a pulling position of the punch body, wherein a positioning member is provided in the punch body,
It is provided so as to be movable in the line direction, and the embossing rod is attached to the positioning member.
Concentrically movably penetratingly arranged, the tip of the positioning member
A tapered positioning surface is formed at the end, and the positioning member is
A spring for repression that can be pressed
An automatic punch having a front end surface formed on a pressing surface orthogonal to the axis of the punching rod .