JP3832678B2 - Method and apparatus for grooving wire rod - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wire groove processing method and apparatus.
[0002]
[Prior art]
What is shown in Japanese Patent Publication No. 1-56853 as an example of a conventional wire bending machine is as shown in FIG. In other words, a cylindrical material guide 24 having a guide hole through which a long work material passes in the axial direction of the central portion, and an outer peripheral portion of the material guide are rotatably provided and set at an arbitrary rotation position. A bending direction determining body 30 and a front portion of the bending direction determining body provided so as to be rotatable about a support shaft orthogonal to the guide hole, and through the material guide facing the tip of the material guide. And a cutting blade 66 slidably provided on the front surface of the bending operation body.
[0003]
Further, 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 operation body and rotates the bending operation body 43 by sliding, and the bending A cutting drum 87 is provided on the outer periphery of the directional body 30 so as to be slidable in the axial direction, and is connected to the cutting blade 66 and moves the cutting blade by sliding.
[0004]
[Problems to be solved by the invention]
However, sharp edges and “burrs” remain on the end face of the cut wire, and there is a risk of injury to human hands. For this reason, the cut end face was manually chamfered by a separate process.
[0005]
Thus, the present invention has an object to provide a method and an apparatus capable of forming a groove on the outer peripheral surface of a wire in the course of a wire feeding path in wire processing.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the configuration of the present invention is as follows. That is, a mounting frame, a columnar rotating body that is rotatably mounted on the mounting frame and has an introduction hole that allows the introduction of a wire on the rotation axis, and an axial direction that is prevented from rotating on the outer peripheral surface of the rotating body A tool sleeve that is slidably mounted in a radial direction with respect to a slit along the radial direction provided on one end surface of the rotary body, and a detachable attachment to the tool holder. A groove forming tool that is freely mounted, and a notch that is provided between the notch sleeve and the tool holder, and advances and retracts the tool holder in the radial direction along the slit according to the sliding of the notch sleeve. A lever, a power reciprocating means for moving the cutting sleeve back and forth in the axial direction along the rotating body, a power rotating means connected to the other end of the rotating body, and a wire installed on the outlet side of the rotating body Gripping solid It is to include a clamp that.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on an 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 middle of the path for feeding the wire A.
[0009]
2, 3, and 4, the mounting frame 1 is fixed to the main body of the wire bending machine C, and the columnar rotary body 2 is rotatably mounted via the first bearing 3 a. The rotary body 2 includes a small-diameter portion 2a to which the first bearing 3a is fitted, and a large-diameter portion 2b integrally formed on one end side thereof. And the slit 2c along a radial direction is provided in the one end surface of this large diameter part 2b facing on a diameter. A guide tube 4 that guides the introduction of the wire A is rotatably inserted into the center hole that passes through the rotation center of the rotary body 2 via the second bearing 3b. The guide tube 4 has an introduction hole for introducing and guiding the wire A on the central axis.
[0010]
The cutting sleeve 5 is attached to the outer peripheral surface of the rotary 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 coupled by a short cylindrical body 5b on the outer periphery.
[0011]
A pair of tool holders 7 is attached to a slit 2c along the radial direction provided on one end surface of the rotary body 2 so as to be slidable in the radial direction. The tool holder 7 has a tool post 7b attached to one end of a rectangular parallelepiped main body 7a, a guide member 7c that fits into a slit of the rotating main body formed integrally with the other end, and a recess formed on the other end face. The engaging member 7d is protruded.
[0012]
Groove forming tools 8 a and 8 b are detachably mounted on the tool holder 7. On the other hand, the groove forming tool 8a is a cutting tool having a rounded tip with a small radius as shown in FIG. 5, and the groove forming tool 8b is a free-cutting rotary disk cutter (rolling tool) as shown in FIG. is there.
[0013]
A cutting lever 9 is provided between the cutting sleeve 5 and the tool holder 7, and the tool holder 7 is advanced and retracted in the radial direction along the slit in accordance with the sliding of the cutting sleeve 5. The incision lever 9 is composed of an L-shaped member 9a and a pin 9b that rotatably supports the L-shaped member 9a at its intermediate portion. Fits freely.
[0014]
The power reciprocating means 10 for moving the cutting sleeve 5 back and forth in the axial direction along the rotary body is an air piston cylinder attached to the frame 1 and faces the upper and lower outer peripheral surfaces with the rotation axis of the cutting sleeve 5 interposed therebetween. . The third bearing 3 c is interposed between the sleeve 5 and the inner ring also serving as the short cylinder 5 b of the sleeve 5, the outer ring is fixed to the piston cylinder 10, and the ball rolls as the sleeve 5 rotates.
[0015]
The power rotating means 11 connected to the other end of the rotating body 2 includes a driven pulley 11a fixed to the other end of the rotating body 2 and a belt 11b engaged therewith.
[0016]
A clamp 12 that holds and fixes the wire from above and below is provided on the wire exit side of the rotating body 2 and on the front side in the wire feed direction from the tool holder 7. The clamp is composed of a frame 12a upright from the main body of the wire bending machine C, an upper clamping piece 12b fixed to the frame 12a, and a lower clamping piece 12c which is moved up and down by a piston cylinder 12d.
[0017]
In the above, embodiments of the method of the present invention are described along with the operating state of the apparatus. The wire A is fed in its length direction, passed between the upper and lower clamping 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, and further the bending portion of the wire bending machine C And introduced into the cutting part. And it fixes with the clamp 12 in the position.
[0018]
Next, the power rotating means 11 is activated to rotate the rotating body 2 around its axis. Further, the power reciprocating means 10 is activated, the cutting sleeve 5 is slid forward in the wire feed direction, the tool base 7b is sent inward in the radial direction, and the tool 8 is sent to the wire to form a groove. At this time, one of the cutting tools 8a cuts the V-groove around the circumference, and the other disk cutter 8b revolves around the wire A while rotating while being pressed against the wire A, so that the formed A circumferential groove having a V-shaped cross-section that is further sharply cut into the bottom of the V-groove is formed by plastic deformation. That is, a two-stage V-shaped circumferential groove is formed.
[0019]
Next, the rotation of the rotary body 2 is stopped and the cutting sleeve 5 is returned backward in the wire feed direction. The wire A after the groove formation is sent to the cutting part in the length direction. Then, 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.
[0020]
One pair (two sets in total) of the tool 8 is provided in the radial direction of the rotary body 2, but one set 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.
[0021]
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.
[0022]
The present invention is not limited to the above-described embodiments and embodiments, but includes various modifications without departing from the spirit and scope of the claims.
[0023]
【The invention's effect】
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 path for feeding the wire in the length direction.
[Brief description of the drawings]
FIG. 1 is a schematic front view showing a wire processing line including an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of an embodiment of the present invention.
FIG. 3 is a right side view of FIG. 2;
4 is an exploded perspective view of FIG. 2. FIG.
FIG. 5 is an enlarged view of a main part of FIG. 2 and a front view of the cutting tool.
6 is an enlarged view of a main part of FIG. 2 and a front view of the rolling tool.
[Explanation of symbols]
A Wire rod B Invention device C Wire bending machine 1 Mounting frame 2 Rotating body 2a Small diameter portion 2b Large diameter portion 2c Radial groove 3a First bearing 3b Second bearing 3c Third bearing 4 Guide cylinder 5 Cutting sleeve 5a Annulus 5b Short cylinder 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 Drive pulley 11b Belt 12 Clamp 12a Frame 12b Upper clamping piece 12c Lower clamping piece 12d Piston cylinder

Claims (1)

A mounting frame;
A cylindrical rotating body that is rotatably mounted on the mounting frame and has an introduction hole that allows introduction of a wire rod on the rotation axis;
A cutting sleeve that is prevented from rotating on the outer peripheral surface of the rotating body and is slidably attached in the axial direction;
A tool holder that is slidably mounted in a radial direction with respect to a slit along the radial direction provided on one end surface of the rotating body;
A groove forming tool detachably attached to the tool holder;
A cutting lever that is provided between the cutting sleeve and the tool holder and moves the tool holder in a radial direction along the slit in accordance with the sliding of the cutting sleeve;
Power reciprocating means for advancing and retracting the cutting sleeve in the axial direction along the rotary body;
Power rotating means connected to the other end of the rotating body;
A wire grooving apparatus comprising: a clamp for gripping and fixing a wire installed on the outlet side of the rotating body.

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