JPH0482666A - Flaw removing device for rod - Google Patents

Abstract

PURPOSE:To surely cut only the part of this flaw, even in case of the flaw being located at any position on the circumference of a rod, by composing it so as to cut the specified circumferential directional part on the circumference of the rod by an edge, with a rotary shaft being moved in the plane by the movement of a holding member and/or support member. CONSTITUTION:The shaft center of a rotating shaft 3 becomes in the position eccentric to the shaft center of a rod 2, by moving a holding member 5 in the specified quantity along an (x) axis and moving a support member 7 in the specified quantity along (y) axis, from the state of the shaft center of the rotating shaft 3 coinciding with the shaft center of the rod 2 in the case of the shaft center of the rod 2 coinciding with the origin of an xy coordinate, yet, the holding member 5 being enabled at its movement along the (x) axis and the support member 7 being enabled at its movement along (y) axis. Therefor, the shaft center of the rotating shaft 3 can be moved in any direction of the peripheral direction from the origin, by changing the respective moving direction and moving quantity of the holding member 5 and support member 7. The edge 4 of the rotating shaft 3 is made corresponding to the flaw of the rod by this movement of the rotating shaft 3.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a bar material flaw removal device.

[Problems to be solved by conventional technology and inventions] When manufacturing raw steel, etc., it has long been desired to produce materials without defects, and in recent years melting and rolling equipment has been improved, making it possible to Although the quality improved dramatically, it was not possible to make all products free from defects.

Therefore, conventionally, a so-called full-periphery peeling operation is performed in which the entire circumference of the material is cut regardless of the presence or absence of flaws.

Alternatively, a method has been used in which the flawed part is visually confirmed and the flawed part is removed by manual polishing.

However, full-periphery peeling work results in large material losses, takes a long time, and is inefficient. In addition, when visual inspection is performed, there is a risk that the inspection may be overlooked, resulting in many defective products. Furthermore, manual polishing work has been a difficult task for the operator.

In addition, with the development of advanced cold heading technology, bending, cracking, etc. due to defects during processing have become more frequent, and the need for concentric materials to be free of defects has increased.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a bar flaw removal device that can reliably and easily remove flaws from a bar (having a diameter of about 50 to 100 m).

[Means to solve the problem]

In order to achieve the above-mentioned object, a bar material flaw removal device according to the present invention is provided with a rotating shaft into which a bar material running along the longitudinal direction is loosely inserted, and a rotating shaft between the bar material and the rotating shaft. The rotating shaft is provided with a blade portion that forms a gap between the shaft and the rod when the blade is disposed concentrically with the rod, and the rotating shaft is rotatably supported on a holding member. At the same time, a moving mechanism for supporting the holding member on the supporting member and moving the holding member and the supporting member in directions orthogonal to each other within a plane orthogonal to the running direction of the bar is attached, The rotary shaft is moved within the plane by movement of the holding member and/or the support member, and the cutting portion is configured to cut a predetermined circumferential portion on the circumference of the bar material. Yes, in that case,
It is preferable to provide a guide body near the downstream side of the blade portion for slidingly contacting the running bar and preventing the bar from swinging.

[For production]

When the bar and the rotating shaft are arranged concentrically, the blade provided on the rotating shaft does not come into contact with the bar, and the bar is not cut. From this state, by moving the holding member and/or the supporting member using the moving mechanism, the rotating shaft can be moved in any direction within a plane orthogonal to the running direction of the bar. That is, for example, when the axis of the bar is aligned with the origin of the xy coordinates, the holding member is movable along the y-axis, and the supporting member is movable along the y-axis. If the holding member is moved by a predetermined amount along the y-axis and the support member is moved by a predetermined amount along the y-axis from a state where the axis of the rotating shaft is aligned with the axis of the bar, the rotating shaft The axial center of the bar is eccentric to the axial center of the bar, so that the respective moving directions of the holding member and the supporting member,
By changing the amount of movement, the fine point of the rotating shaft can be moved from the origin to any direction in the circumferential direction.

Therefore, no matter where the flaw on the bar is located on the circumference, the rotating shaft can be moved to make the blade portion correspond to the flaw.

Furthermore, in the case of a guide having a guide body, swinging of the bar near the blade portion is prevented, and cutting of the end of the bar is also possible.

〔Example〕

Hereinafter, the present invention will be explained in detail based on drawings showing examples.

1, 2, and 3 show a bar material flaw removal device according to the present invention, which comprises a bar material whose running along its longitudinal direction is guided by a feed roller... The bar 2 is loosely inserted into a cylindrical rotating shaft 3, and a blade 4 provided on the rotating shaft 3 cuts the bar 2.
is cut.

The rotating shaft 3 is rotatably supported by a holding member 5, and the holding member 5 is supported by a supporting member 7 erected on a base 6.
is supported by

That is, the holding member 5 has upper and lower walls 8a, 8b, front and rear walls 8c,
8d and side walls 8e and 8f, and a cylindrical portion 5b protruding from the rear wall 8d of the main body 5a. is rotatably supported.

Further, a large through hole 29 is provided through the front wall 8c.

The lower end of the main body 5a is inserted into the base 6 through a through hole 10 provided in the upper wall 6a, and the motor II housed in the base 6 is inserted into the lower end. It is attached. The output shaft of this motor 1 is inserted into the main body 5a through a through hole 40 provided in the rear wall 8d, and a pulley 12 is attached to the output shaft. A pulley 14 is attached to the pulley 13.
A transmission member 34 such as a toothed heald is locked to 2.14. Therefore, when the motor 11 is driven and the output shaft rotates, the rotating shaft 3 rotates around its axis 01 (see FIG. 5). 15 are the lower wall 8b of the main body 5a and the lower wall 6b of the base 6
It is a resilient member interposed between the holding member 5 and supports the holding member 5.

Thus, the support member 7 has an upper wall 16a and a side wall 16e16.
An outer flange 17.17 is connected to the lower ends of the side walls 16e and 16f, and the outer flange 17.17 is connected to the base 6.
It is slidably fitted into a groove 18.18 provided in the upper wall 6a of the holder. That is, this support member 7 supports the bar 2
In a plane perpendicular to the running direction (direction of arrow A),
Slide in the directions of arrows B and C shown in FIG. Note that the groove 18.18 is formed by integrally providing a groove forming piece 19.19 having a cross-sectional shape of a curved line on the upper wall 6a of the base 6.
9 and an upper wall 6a.

Further, as shown in FIG. 3, the side wall 16 of this support member 7
A groove 20.20 is provided on the inner surface of the groove 20.e, 16f.
0.20, the side walls 8e and 8f of the main body portion 5a of the holding member 5
are fitted so that they can freely slide vertically. That is, the holding member 5 slides in the direction of the arrow E shown in FIG. 2 within a plane perpendicular to the traveling direction of the bar 2 (direction of the arrow A).

Therefore, the holding member 5 and the supporting member 7 move in directions perpendicular to each other within a plane perpendicular to the traveling direction of the bar 2, and the movement of the holding member 5 is performed by the moving mechanism M1. , the movement of the support member 7 is performed by a movement mechanism M2.

Here, the moving mechanism M1 includes a motor 21 fixed to the upper wall 16a of the support member 7, a vertical screw shaft 22 fixed to the output shaft of the motor 21, and a screw screw attached to the screw shaft 22. A nut member 23 to be fitted, the nut member 23 comprising:
It is fixed to the upper wall 8a of the holding member 5. Therefore, when the motor 21 is driven and the screw shaft 22 rotates, the cough shaft 2
The NAND member 23 screwed into the screw shaft 22 is
In other words, the holding member 5 moves along the vertical axis), and as a result, the holding member 5 moves along the grooves 20, 20 of the supporting member 7 as shown by the arrow E.

The moving mechanism M2 also includes a motor 25 attached to the base 6 via a mounting plate 24, a horizontal screw shaft 26 fixed to the output shaft of the motor 25, and a screw shaft 26 that is screwed into the screw shaft 26. The nut member 27 is fixed to the side wall 16e of the support member 7.

That is, a through hole 28 is provided in the side wall 16e, and a nut member 27 is attached to the through hole 28. Therefore, motor 25
is driven and the screw shaft 26 rotates, the NAND member 27 screwed onto the screw shaft 26 moves along the axis (that is, the horizontal axis) of the screw shaft 26. This results in
The support member 7 moves along the groove 18.18 as shown by arrows B, C. In this case, as the support member 7 moves in the directions of arrows B and C, the holding member 5 is moved simultaneously.

As shown in FIG.
6 Four cutting bodies 4a such as hides arranged at pitches.
It is formed from... In addition, the cutting edge 31 of each cutting body 4a
... protrudes inward from the inner circumferential surface 32 of the ring body 30, but the axis 0 of the bar 2 and the axis 01 of the rotating shaft 3 are aligned (that is, the bar 2 and the rotating shaft 3 are arranged concentrically), a gap 33 is formed between the blade part 4 (specifically, the cutting edge 31... of each cutting body 4a), and the rotating shaft 3 Even when rotating around the axis 01, the bar 2 is not cut by the blade portion 4.

Therefore, by moving the support member 7 in the direction of arrow C in the state shown in FIG. 2 (the state in which the bar 2 and the rotating shaft 3 are arranged concentrically), the As shown in FIG. 5 (II), the bar 2 can be cut by the cutting body 4d, and by moving the support member 7 in the direction of arrow B from the state shown in FIG. By moving the holding member 5 in the direction of arrow E from the state shown in FIG.
As shown in Figure (I [[), cutting of the bar 2 by the cutting body 4a becomes possible, and by moving the holding member 7 in the direction of the arrow from the state shown in Figure 2, the state shown in Figure 5 (IV) is achieved. As shown, the bar 2 can be cut by the cutting body 4C.

That is, as shown in FIG. 6, the moving direction of the support member 7 is
When the moving direction of the holding member 5 is set as the y-axis, by moving the supporting member 7 and the holding member 5, respectively, the axis of the rotating shaft 3 is set to 0. can be set to a position eccentric to the origin of the xy coordinates. In other words, by positioning the axis 0 of the bar 2 at the origin, the axis ◯ of the rotating shaft 3 can be positioned eccentrically with respect to the axis ◯ of the bar 2. By changing the moving direction and moving amount of the supporting member 7 and the holding member 5, the position of the axis 01 of the rotating shaft 3 can be set to various positions. In addition, in the sixth time, the supporting member 7 is moved by a predetermined amount in the positive direction, and the holding member 5 is
The figure shows the case where the support member 7 is moved by the same predetermined amount as the support member 7 in the positive direction.

Therefore, in this case, the cutting body may be provided at the position shown by the imaginary line.

Next, a method of using the flaw removing apparatus configured as described above will be explained.

The bar 2 is run inside the rotating shaft 3 with the bar 2 and the rotating shaft 3 being arranged concentrically. Then, the position of the flaw is detected by a flaw detector or the like provided on the upstream side of this device, and based on this position, the holding member 5 and/or the support member 7 are moved to enable cutting of the flaw. The axial center OI of the rotating shaft 3 is set at a position eccentric to the axial center ○ of the bar 2, as shown in FIG.
Cut out the flawed part. Thereafter, the holding member 5 and the supporting member 7 are moved to return the bar 2 and the rotary shaft 3 to a concentric arrangement in preparation for cutting the next flaw.

Therefore, it is possible to cut out the flaw in the bar 2 in accordance with the position of the flaw.

The movement of the holding member 5 and the support member 7 is controlled by marking the bar 2 on another line, reading the marking with a reader on the line according to the present invention, and controlling the movement based on the reading. You are free to do as you please.

Next, FIG. 7 and FIG. 8 show another embodiment, in which case,
A guide body 35 that slides on the running bar 2 is provided near the downstream side of the blade part 4. That is, the guide body 35 is a ring body made of cemented carbide, and includes the support member 7 and the holding member 5.
The inner circumferential surface 37 of the guide body 35 is fixed to the upstream end of the cylindrical body 36 inserted into the rotating shaft 3 , and the inner circumferential surface 38 of the guide body 35 is in sliding contact with the bar 2 . An outer flange portion 39 is provided at the downstream end of the cylindrical body 36.
The outer nuclear flange 39 is fixed to a mounting plate 41 integrally erected from one groove forming piece 19 via a fixing member 42 such as a bolt, and the cylindrical body 36 is attached to the base 6. It is considered to be in one piece.

In this case, the outer circumferential surface 2c of the bar 2 and the inner circumferential surface 37 of the cylindrical body 36 do not come into sliding contact, and the inner circumferential surface 43 of the rotating shaft 3 and the outer circumferential surface 44 of the cylindrical body 36 do not come into sliding contact. Configure it so that it does not.

Therefore, in the flaw removing apparatus shown in FIGS. 7 and 8, even when the upstream end 2a of the bar 2 passes through this apparatus as shown in FIG. 7, as shown in FIG. Even when the downstream end 2b of the bar 2 passes through this device, the bar 2 is held near the downstream side of the blade 4, preventing the bar 2 from swinging and cutting by the blade 4. It becomes certain.

Note that the present invention is not limited to the above-described embodiments, and the design may be changed without changing the gist of the present invention. It is also preferable to use the same circumference, and if provided in this way, all the flaws can be removed even if there are two or more flaws on the same circumference. Moreover, the cutting body 4a of the blade part 4
You can freely increase or decrease the number of . The moving direction of the holding member 5 is not limited to the vertical direction, and the moving direction of the supporting member 7 is not limited to the horizontal direction.

[Effects of the Invention] Since the present invention is configured as described above, it produces the following effects.

No matter where the flaw is located on the circumference of the bar 2, only the flawed part can be reliably cut, which greatly reduces the working time compared to cutting the entire circumference. , material loss is also reduced. Moreover, since it is mechanical cutting,
This eliminates harsh work for workers.

In addition, in the case where the guide body 35 is provided, the end portion 2 of the bar material 2
Even when cutting a and 2b, the bar 2 does not swing, so cutting can be carried out reliably.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a plan view, Fig. 4 is an enlarged side view of the main part, and Fig. 5 is an enlarged main part showing the cutting state. A side view, FIG. 6 is an explanatory view showing the relationship between the axial center of the bar and the fine center of the rotating shaft, FIG. 7 is a sectional view of another embodiment, and FIG. 8 is a sectional view of the main part. 2... Bar material, 3... Rotating shaft, 4... Blade part, 5...
- Holding member, 7... Supporting member, 33... Gap part, 3
5...Guide body, Ml, MZ...Movement mechanism. Patent applicant Takano Kikai Co., Ltd.

Claims (1)

[Claims] 1. A rotary shaft 3 is provided, into which a bar 2 running along the longitudinal direction is loosely inserted, and the bar 2 and the rotary shaft 3 are disposed concentrically. There is a gap 3 between the bar 2 and the bar 2.
3 is formed on the rotating shaft 3, and the rotating shaft 3 is rotatably supported on the holding member 5,
A moving mechanism M that supports the holding member 5 on the supporting member 7 and further moves the holding member 5 and the supporting member 7 in mutually orthogonal directions within a plane orthogonal to the running direction of the bar 2.
_1 and M_2 are attached, and by moving the holding member 5 and/or the supporting member 7, the rotating shaft 3 is moved within the plane, and the blade part 4 is moved to a predetermined position on the circumference of the bar 2. A bar material flaw removal device characterized in that it is configured to cut a circumferential portion. 2. The bar material flaw removal device according to claim 1, further comprising a guide body 35 provided near the downstream side of the blade portion 4 for slidingly contacting the traveling bar material 2 to prevent the bar material 2 from swinging.