JPH1034266A - Method and device for grooving of wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a groove on the outer peripheral face of a wire in middle of a route to send the wire by forming a groove with traveling a tool table inward in the radial direction while rotating a rotating main body around its axis and pushing a tool on the outer peripheral face of the wire in working the wire. SOLUTION: A rotating body 2 is rotated around its axis by actuating a power rotating means 11. Further, by actuating a power reciprocating means 10, a cutting in sleeve 5 is slid forward in the wire rod sending direction, by traveling a tool table 7b inward in the radial direction and traveling a tool 8 up to a wire, a groove is formed. At this time, because one of the cutting tool 8a cuts V groove on periphery, the other discoid cutter 8b, which is pushing on the wire A, revolves around the wire A while rotating, a peripheral groove, which is further/sharply cut-in to V shape in cross section, is formed to the bottom of formed V groove by plastic deformation, that is, a double stepped V shape peripheral groove is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method and an apparatus for processing a groove in a wire rod.

[0002]

2. Description of the Related Art An example of a conventional wire bending machine disclosed in Japanese Patent Publication No. 1-56853 is as follows as shown in FIG. That is, a cylindrical material guide 24 having a guide hole through which a long processing material passes in the axial direction of the central portion, and a rotatably provided outer peripheral portion of the material guide and set at an arbitrary rotation position. Bending direction determining body 3
0, a bending operation which is provided at a front portion of the bending direction determining body so as to be rotatable around a support shaft in a direction orthogonal to the guide hole, and has a material insertion portion facing the tip of the material guide. It has a body 43 and a cutting blade 66 slidably provided on the front surface of the bending operation body.

A bending drum 57 is provided on the outer periphery of the bending direction determining body 30 so as to be slidable in the axial direction, and is connected to the bending operating body to rotate the bending operating body 43 by sliding. A cutting drum 87 slidably provided on the outer peripheral portion of the bending direction determining body 30 in the axial direction, and connected to the cutting blade 66 to move the cutting blade by sliding. Was.

[0004]

However, sharp ends and "burrs" remain on the cut end surfaces of the cut wires, and there is a risk of injury to humans due to the sharp corners and "burrs".
For this reason, the chamfering process was manually performed on the cut end face by a separate process.

[0005] Thus, the present invention, in the wire rod processing,
It is an object of the present invention to provide a method and an apparatus capable of forming a groove on the outer peripheral surface of a wire in the middle of a route for feeding the wire.

[0006]

Means for Solving the Problems To solve the above problems, the configuration of the present invention is as follows. That is, the method of the first configuration is to rotatably support a cylindrical rotating body having an introduction hole for allowing the introduction of the wire on the rotation axis to the mounting frame, and to introduce the wire in the length direction thereof. Into the hole, and fixed at the outlet side, a tool base is slidably supported on one end surface of the rotating body in the radial direction, and the tool base is radiused while rotating the rotating body about its axis. Sending the tool inward in the direction and pressing the tool against the outer peripheral surface of the wire to form a groove.

[0007] The device of the second configuration comprises a mounting frame, a cylindrical rotary body rotatably mounted on the mounting frame and having an introduction hole for allowing introduction of a wire on a rotation axis, and an outer periphery of the rotary body. A cutting sleeve which is non-rotatably mounted on the surface and is slidably mounted in the axial direction, and a tool which is slidably mounted in the radial direction on a radial slit provided on one end surface of the rotary body. A holder, a groove forming tool removably mounted on the tool holder, and provided between the cutting sleeve and the tool holder, wherein the tool holder is inserted into the slit in accordance with sliding of the cutting sleeve. A cutting lever for moving back and forth in a radial direction along with the power reciprocating means for moving the cutting sleeve back and forth in an axial direction along the rotating body;
Power rotating means connected to the other end of the rotating body.

[0008]

Embodiments of the present invention will be described below based on one embodiment shown in the drawings. In FIG. 1, the apparatus B is provided in a wire bending machine C so as to form a circumferential groove on the outer peripheral surface of the wire in the course of feeding the wire A.

In FIGS. 2, 3, and 4, a wire bending machine C
The mounting frame 1 is fixed to the main body, and the columnar rotating body 2 is rotatably mounted on the main body via the first bearing 3a. The rotating main body 2 includes a small-diameter portion 2a into which the first bearing 3a is fitted, and a large-diameter portion 2b integrally formed at one end thereof. A slit 2c extending in the radial direction is provided on one end surface of the large-diameter portion 2b so as to be diametrically opposed.
A guide cylinder 4 for guiding the introduction of the wire A through a second bearing 3b is provided in a center hole penetrating the rotation center of the rotating main body 2.
Is rotatably inserted. The guide cylinder 4 has an introduction hole for introducing and guiding the wire A on its central axis.

The cutting sleeve 5 is attached to the outer peripheral surface of the rotating main body 2 via a key 6 so as to be slidable in the axial direction. The sleeve is formed by two annular rings 5a concentrically facing each other with a gap G therebetween and connected by a short cylindrical body 5b at the outer periphery.

A pair of tool holders 7 are slidably mounted in a radial direction on a slit 2c provided on one end surface of the rotary body 2 along the radial direction. The tool holder 7 is
A tool post 7b is attached to one end of a rectangular parallelepiped main body 7a, a guide member 7c fitted in a slit of the rotating main body is integrally formed at the other end side, and an engaging member 7d having a concave portion protrudes at the other end surface. Is established.

The tool holder 7 is provided with groove forming tools 8a and 8b.
Are detachably mounted. On the other hand, the groove forming tool 8a is a cutting tool having a small radius as shown in FIG. 5, and the groove forming tool 8b is a free-rotating disc cutter (rolling tool) for free rotation as shown in FIG. is there.

A cutting lever 9 is provided between the cutting sleeve 5 and the tool holder 7, and moves the tool holder 7 in the radial direction along the slit in accordance with the sliding of the cutting sleeve 5. Let it. The cutting lever 9 is an L-shaped member 9
a and a pin 9b for rotatably supporting the same at an intermediate portion thereof.
And movably fitted to the engaging member 7d.

The power reciprocating means 10 for moving the cutting sleeve 5 in the axial direction along the rotating main body includes a frame 1
, Which faces the upper and lower outer peripheral surfaces with the rotation axis of the cutting sleeve 5 interposed therebetween. Then, a third bearing 3c is interposed between the sleeve 5 and the inner ring also serving as the short cylinder 5b of the sleeve 5, the outer ring is fixed to the piston cylinder 10 side, and the ball rolls as the sleeve 5 rotates.

The power rotating means 11 connected to the other end of the rotating body 2 comprises a driven pulley 11a fixed to the other end of the rotating body 2 and a belt 11b engaged with the driven pulley 11a.

A clamp 12 for gripping and fixing the wire from above and below is provided on the wire outlet side of the rotary body 2 and forward of the tool holder 7 in the wire feed direction. The clamp includes a frame 12a that stands upright from the body of the wire bending machine C,
It comprises an upper holding piece 12b fixed thereto and a lower holding piece 12c raised and lowered by a piston cylinder 12d.

In the above, an embodiment of the method of the present invention will be described together with the operating state of the device. The wire A is sent in the longitudinal direction, and is passed between the upper and lower holding pieces 12b and 12c of the clamp 12 through the introduction hole of the guide tube 4 of the apparatus B of the present invention.
Further, the wire rod is introduced into a bending portion and a cutting portion of the wire rod bending machine C. Then, it is fixed by the clamp 12 at that position.

Next, the power rotating means 11 is activated to rotate the rotating body 2 about its axis. Further, the power reciprocating means 10 is activated, the cutting sleeve 5 is slid forward in the wire feeding direction, the tool table 7b is fed inward in the radial direction, the tool 8 is fed to the wire, and a groove is formed. At this time, one of the cutting tools 8a cuts the V-shaped groove around the circumference, and the other disk cutter 8b revolves around the wire A while rotating while being pressed against the wire A. A circumferential groove having a V-shaped cross section that is more sharply penetrated is formed by plastic deformation at the bottom of the V groove. That is, a two-stage V-shaped circumferential groove is formed.

Next, while stopping the rotation of the rotating body 2,
The cutting sleeve 5 is returned backward in the wire feed direction. The wire A on which the groove has been formed is sent to the cut portion in its length direction. And
The wire A is cut at the bottom of the formed groove. Thereby, the cut surface of the wire A is in a chamfered state.

The tool 8 is moved in the radial direction of the rotating body 2 by one.
Although a pair (a total of two pairs) is provided, one pair may be sufficient in the radial direction. For example, when using a very sharp pointed tool with little rounded tip. Also, only cutting tools or only rolling tools may be used.

As another embodiment for feeding the tool 8 in the radial direction of the rotary body 2, a known wedge-shaped power chuck, collet chuck or scroll chuck is used.

The present invention is not limited to the examples and embodiments described above, but includes various modifications without departing from the spirit and scope of the claims.

[0023]

According to the configuration of the present invention, a groove can be formed on the outer peripheral surface of the wire in the middle of the route for feeding the wire in the length direction.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a wire rod processing line including an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of one embodiment of the present invention.

FIG. 3 is a right side view of FIG. 2;

FIG. 4 is an exploded perspective view of FIG.

FIG. 5 is an enlarged view of a main part of FIG. 2 and is a front view of a cutting tool.

FIG. 6 is an enlarged view of a main part of FIG. 2 and is a front view of a rolling tool.

[Explanation of symbols]

 Reference Signs List A wire rod B device of the present invention C wire rod bending machine 1 mounting frame 2 rotating body 2a small diameter section 2b large diameter section 2c radial groove 3a first bearing 3b second bearing 3c third bearing 4 guide cylinder 5 cutting sleeve 5a ring 5b Short cylindrical body 6 Key 7 Tool holder 7a Main body 7b Tool post 7c Guide member 7d Engaging member 8 Groove forming tool 9 Cutting lever 9a L-shaped member 9b Pin 10 Power reciprocating means 11 Power rotating means 11a Driven pulley 11b Belt 12 Clamp 12a Frame 12b Upper holding piece 12c Lower holding piece 12d Piston cylinder

Claims (2)

[Claims] 1. A mounting body for rotatably supporting a cylindrical rotating body having an introduction hole for allowing introduction of a wire on a rotation axis, and introducing a wire into the introduction hole of the rotating body in a length direction thereof. ,
By fixing at the outlet side, a tool table is slidably supported on one end surface of the rotating body in the radial direction, and the tool table is fed radially inward while rotating the rotating body about its axis. Forming a groove by pressing a tool against an outer peripheral surface of the wire. 2. A mounting frame, a columnar rotating body rotatably mounted on the mounting frame and having an introduction hole for allowing introduction of a wire on a rotation axis, and a rotation-stopped outer peripheral surface of the rotating body. A cutting sleeve slidably mounted in the axial direction, a tool holder slidably mounted in a radial direction with respect to a radial slit provided on one end surface of the rotating body, and a tool. A groove forming tool detachably mounted on a holder, provided between the cutting sleeve and the tool holder,
A cutting lever for moving the tool holder in the radial direction along the slit in response to sliding of the cutting sleeve, a power reciprocating means for moving the cutting sleeve in the axial direction along the rotating body, A grooving device for a wire rod, comprising: a power rotating means connected to the other end of the rotating main body.