JP2000061723A - Deburring cuter, device, and method for long size ingot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the deburring cutter, device, and method capacitated to be used continuously by only rotating the cutter without replacing the whole cutter, in the cutter for deburring the shoulder part of a long size ingot needed to replace the whole cutter when a knife edge is broken. SOLUTION: A cutter 2, performing deburring by pressedly abutting to the shoulder part 1a of a long size ingot 1 having the cross section shape of a rectangle or a trapezoid moving from a casting machine to a mill, is nearly a columnar body, composed of ceramic and having a knife edge 2a composed of a circular ridge line part on the end part of a column side surface 2b. A part of the knife edge 2a of the cutter 2 is pressed to the shoulder part 1a of the ingot 1 moving in a longitudinal direction, to cut the shoulder part 1a of the ingot 1, while keeping a relative position so as to tilt the column spindle X of the cutter 2 and the longitudinal direction axis Y of the ingot 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring cutter and apparatus for a long ingot and a deburring method in continuous casting and rolling in which a belt-and-wheel type continuous casting machine and a rolling mill are connected in series.

[0002]

2. Description of the Related Art Rough drawn wires of copper, copper alloys, aluminum, aluminum alloys, etc., are continuously cast by a belt-and-wheel type continuous casting machine and a rolling machine, and hot rolled into a continuous ingot. In addition, it is manufactured. FIG. 9 is a view for explaining the continuous casting and rolling equipment, in which 21 is a melting furnace, 22 is a holding furnace, 23 is a casting wheel, 24 is a casting belt, and 25 is a casting belt.
Is a continuous casting machine, 26 is a long ingot, 27 is a roll, 28 is a deburring device, 29 is a rolling mill, 30 is a rough drawing wire, and 31 is a winding device.

The continuous casting machine 25 mainly comprises a casting wheel 23 and a casting belt 24, and holds a metal such as copper, copper alloy, aluminum and aluminum alloy melted in the melting furnace 21 in a holding furnace 22 for a while. After that, the molten metal is poured between the groove of the casting wheel 23 and the casting belt 24. The molten metal is cooled during the rotation of the casting wheel 23 and the casting belt 24, and the long ingot 26 in the solid state is cooled.
And is withdrawn from the continuous casting machine 25.

The long ingot 29 has a trapezoidal or rectangular cross section and a size of approximately 70 to 100 mm square.
It is in a state of being heated to 800 to 1000 ° C. afterwards,
The long ingot 26 passes through a roll 27 and a deburring device 28, is hot-rolled by a rolling mill 29, and becomes a rough drawing wire 30 having a diameter of about 10 mm, and is wound by a winding device 31.

FIG. 10 (A) is a cross-sectional view showing a state where molten metal is held in the groove of the casting wheel, FIG.
10B is a cross-sectional view of the long ingot before deburring, FIG.
(C) is a cross-sectional view of the long ingot after deburring. Figure 1
0, the same symbols as those in FIG. 9 indicate the same components. Figure 10
As shown in (A), the molten metal 26c poured into the groove of the casting wheel 23 is held by the casting belt 24 so as not to flow out, and is cooled to a solid state while the casting wheel 23 is rotating. Then, it becomes a long ingot.

During the continuous casting, a part of the molten metal 26c enters between the outer peripheral surface of the casting wheel 23 and the casting belt 24, so that the long ingot 26 exiting the continuous casting machine has a structure shown in FIG.
As shown in 0 (B), laterally sharp burrs 26a are formed on both shoulders. If a long ingot is rolled with the burr 26a attached, defects such as scratches will be generated on the surface of the rough drawing line. Therefore, place a deburring device before the long ingot enters the rolling mill. Cut off parts. FIG. 10 (C) is a cross-sectional view of the long ingot after deburring, and 26b is a scraped portion.

[0007]

In the deburring device, the blades of the cutter are pressed against both shoulders of the long ingot to scrape the shoulders with a width of several mm in the longitudinal direction. FIG. 11 is a diagram showing an example of a cutter in a conventional deburring device, FIG. 11 (A) is a plan view, and FIG. 11 (B) is a side view. 60 is a cutter, 60a is a cutting edge, 60b, 60
c is a cutter fixing hole.

The cutter 60 is made of a super steel alloy, but since the object to be ground is at a high temperature close to 1000 ° C.,
The cutter itself easily becomes brittle, and the cutting edge 60a may be chipped. If the cutting edge is chipped, it becomes necessary to replace the entire cutter. The long ingot cast during the time required for the replacement still has burrs, and if it is rolled as it is, the rough drawing line will be scratched, so it must be treated as a defective product. Further, the cutter is a super-steel alloy, and if the cutting edge is chipped, it is necessary to replace the whole, which is expensive. Therefore, there is a demand for a cutter that is inexpensive and easy to replace.

The present invention is a deburring device equipped with a cutter made of an inexpensive material, which can be used many times by rotating the cutter even if the cutting edge of the cutter is partly broken, without replacing the entire cutter, and by rotating the cutter a little. And a deburring method.

[0010]

DISCLOSURE OF THE INVENTION A deburring cutter for a long ingot according to the present invention presses against a shoulder portion of a long ingot having a rectangular or trapezoidal cross section which is transferred from a casting machine to a rolling mill to remove burrs. The cutter is a shaving cutter, and the cutter is a substantially cylindrical object made of ceramic, and has a cutting edge made of a circular ridge at the end of the side surface of the cylinder.

The deburring device includes the cutter, a support shaft which is inserted into a shaft hole provided in a cylindrical shaft of the cutter to support the cutter, and a tilt adjusting means for adjusting a vertical tilt angle of the cutter support shaft. , Equipped with a cutter rotating means for rotating the cutter around the cylindrical axis and a cutter moving means for pressing the cutter against the long ingot, so that the cylindrical axis of the cutter and the longitudinal axis of the long ingot are inclined so as to be inclined. While maintaining the position, a part of the blade edge of the cutter is pressed against the shoulder portion of the long ingot that moves in the longitudinal direction to scrape the shoulder portion of the long ingot.

Further, by providing a concave portion on the bottom surface side of the cylinder along the blade edge of the cutter, it is possible to facilitate escape of the shavings scraped off. Further, by providing one or a plurality of annular grooves in the circumferential direction on the cylindrical side surface of the cutter, the annular groove serves as a passage for the cutter cooling water, so that the cooling effect of the cutter can be enhanced.

Further, two cutters are arranged in tandem in the transition direction of the long ingot, and the rear cutter is moved up and down at a constant cycle in the transition direction of the long ingot to form the long ingot. Alternately deburring with the rear cutter when the rear cutter is pressed against the long ingot, and the front cutter when the rear cutter is released. By performing the above, the length of the shavings can be reduced, and the shavings can be easily processed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing a deburring cutter for a long ingot according to the present invention, which is pressed against the long ingot to scrape a shoulder portion, and FIG. Is a rear side view in the longitudinal direction, FIG. 1 (B) is a side view, FIG. 1 (C) is a front side view in the longitudinal direction, and FIG. 1 (D) is a top view. In FIG. 1, 1
Is a long ingot, 1a is a shoulder portion before deburring, 1b is a shoulder portion after deburring, 2 is a cutter, 2a is a cutting edge, 2b is a cylindrical side surface, 2c is a cylindrical bottom surface, 3 is shavings, and an arrow is long. This is the transition direction of the ingot.

A long ingot 1 made of copper, copper alloy, aluminum, aluminum alloy, etc., exits from a continuous casting machine and moves horizontally toward a rolling mill in the direction of the arrow, and its cross-sectional shape is rectangular. Alternatively, it is trapezoidal and has a size of about 70 to 100 mm square. Further, in a continuous casting machine, it has just come out from a molten metal state to a solid state, and its temperature is in a high temperature state of 800 to 1000 ° C.

2A and 2B show the shape of the embodiment of the deburring cutter. 2 (A) is a side view, and FIG. 2 (B).
Is a bottom view. The cutter 2 is a cylindrical object made of ceramic, and has a cutting edge 2a having a circular ridge portion at the end of the cylindrical side surface 2b. Since the cutter is made of ceramic, it is unlikely that the blade will be softened even at a high temperature of 800 ° C. or higher and the blade edge will be soft or brittle.

Although FIG. 2 shows an example in which the cutting edge 2a is provided at both ends of the cylindrical side surface 2b, the cutting edge may be only one end. In the case of FIG. 2, the cutting edge 2a is composed of a ridge line portion where the side surface 2b of the cylinder and the bottom surface 2c of the cylinder intersect, and the cross section thereof is a right angle. Moreover, if an example of the size of the cutter is shown, the diameter of the bottom surface 2c of the cylinder is about 200 mm,
The height of the cylindrical side surface 2b is about 70 mm.

In deburring, as shown in FIG. 1, a part of the cutting edge 2a of the cutter 2 is a shoulder portion 1a of the long ingot 1.
Press against. When pressing the cutter 2,
The cylinder axis X of the cutter 2 is slightly inclined with respect to the longitudinal axis Y of the long ingot 1. The horizontal inclination angle α when viewed from the top surface direction (vertical direction) is about 5 °, and the vertical inclination angle β when viewed from the side surface direction (horizontal direction) is about 15 °.

Therefore, the cylindrical bottom surface 2c on the side of the cutting edge 2a with which the cutter 2 abuts is slightly facing the outside of the long ingot toward the side opposite to the transition direction of the long ingot 1, and slightly. You are looking down. Since it is necessary to move or tilt the cutter 2 in the vertical direction, the cutter is supported by an appropriate supporting member including a traveling screw, a rotating screw, etc., as described later.

The blade portion 2a of the cutter 2 scrapes off the shoulder of the long ingot 1 with a width of about 10 mm. Since the long ingot 1 is in a high temperature state of 800 to 1000 ° C., the cutting edge 2a of the cutter 2 at a right angle to the cross section is used as the shoulder 1a of the long ingot 1.
The shoulder portion 1a is scraped off only by pressing it against. By this scraping off of the shoulder part, the burr generated on the shoulder part is also scraped off together. Then, the shavings 3 spirally extend toward the center of the bottom surface of the cylinder along the bottom surface 2c of the used cutting edge 2a, and the tip end thereof hangs down by its own weight.

Since the cutting edge 2a of the cutter 2 is a circular ridge line portion at the end of the cylindrical side surface 2b, all of the circular ridge line portion has a function as a cutting edge, but only a part of the cutting edge 2a is actually used. Is pressed against the shoulder of the long ingot 1. If the cutting edge during pressing is broken for any reason, simply press the cutter against the long ingot and rotate the cutter around the cylinder axis. It can be brought into contact with the part, and deburring can be performed subsequently.

When the cutting edge 2a is located on the circular ridges at both ends of the cylindrical side surface 2b, the front and back sides of the cylindrical body should be reversed even if the cutting edge on one end side is cut off and cannot be used. The cutter can be used without replacement.

Although FIG. 1 shows that the cutter 2 is pressed against one shoulder of the long ingot 1, burrs are generated on both shoulders of the long ingot, so that the other Place similar cutters in symmetrical positions on the shoulders of
Similarly, deburring is performed.

Although the cutter having a cylindrical shape has been described with reference to FIGS. 1 and 2, the safety of shavings treatment can be improved by providing a concave portion on the bottom surface of the cylinder along the cutting edge. 3, 4, and 5 are views showing various examples thereof, and FIGS. 3A, 3B, and 3C show a side view, a bottom view, and an enlarged sectional view of a cutting edge portion of the example. In addition, FIG. 4 shows a portion of the cutter of FIG. 3 where deburring is performed, and FIGS. 5A and 5B are cross-sectional views of the cutting edge portions of various cutters.

The cutter 4 shown in FIG. 3 has a recess 4b on the bottom surface 4d of the cylinder along the blade edge 4a at the end of the side surface 4c of the cylinder. The size of the recess 4b is about 0.5 mm in width in the side surface of the cylinder and about 10 mm in width in the radial direction of the bottom surface of the cylinder, and is recessed in a circular ring shape.

When this cutter is used, as shown in FIG. 4, the shavings 3 scraped off by the cutting edge 4a tend to spiral toward the center along the bottom of the cylinder, but the recess 4b Since it hits the wall surface 4e, it is guided in a direction away from the bottom surface of the cylinder without soaring up, and easily falls due to its own weight. The width of the recess 4b in the radial direction of the bottom surface of the cylinder is preferably about 10 mm. If this width is made too large, the shavings will less likely hit the 4e, the function of guiding the shavings away from the bottom surface of the cylinder will be weakened, and it will be difficult to suppress the rising of the shavings.

The cutter 5 or 6 shown in FIG. 5 has a cutting edge 5a or 6a at the end of a cylindrical side surface 5c or 6c, and a recess 5b or 6b at the cylindrical bottom surface 5d or 6d. The edge of the concave portion 5b on the side of the bottom surface 5d of the column is a curved concave surface. In the case of the concave portion 6b, the height of the cutting edge 6a at the end of the cylindrical side surface 6c is the same as the height of the cylindrical bottom surface 6d,
Both edges of d are curved concave surfaces. These cutters 5,
Similarly to the cutter 4, the cutter 6 can smoothly guide the shavings to the outside of the cutter by the concave portion, so that the safety of the person near the deburring device can be improved.

Further, since the temperature of the long ingot 1 is a high temperature close to 1000 ° C., in order to maintain the strength of the cutter, deburring is performed while cooling the cutter with water.
The direction of the cylindrical axis of the substantially cylindrical cutter is inclined with respect to the longitudinal axis of the long ingot, but since the inclination is slight, the cylindrical axis is laid horizontally.

Therefore, if one or a plurality of circumferential annular grooves are provided on the side surface of the cylindrical body, the water hung on the side surface of the cutter flows along the annular groove, so that the cooling effect of the cutter is enhanced. You can The cutter 7 shown in FIG.
Along with the cutting edge 7a, the two annular grooves 7b are provided on the side surface of the cylinder, so that the water cooling effect can be enhanced.

Further, two cutters are arranged in tandem in the transition direction of the long ingot, and the rear cutter is moved up and down at a constant cycle in the transition direction of the long ingot. 7A and 7B are views showing the state, in which FIG. 7A shows the rear cutter lowered, and FIG. 7B shows the rear cutter raised.

In the case of FIG. 7 (A), the rear cutter 8 descends toward the transition direction of the long ingot 1 and is pressed against the shoulder portion of the long ingot 1, so that the shoulder The scraping of the portion is performed by the rear cutter 8, and the shavings 10 drop below the rear cutter 8. The front cutter is also pressed against the shoulder of the long ingot, but when the shoulder moves to the position of the front cutter 9, the shoulder has already been scraped off. Do not scrape off parts.

Further, in the case of FIG. 7 (B), since the rear cutter 8 is lifted and released from the pressing against the long ingot, only the front cutter 9 is pressed against the long ingot 1. . Therefore, the shoulder is scraped off by the front cutter 9, and the shavings 11 fall below the front cutter 9. By alternately repeating the states of FIGS. 7 (A) and 7 (B) at a constant cycle, the shavings are divided into the rear cutter side and the front cutter side, and the short shavings fall respectively. .

The time in the state of FIG. 7A and the time in the state of FIG. 7B do not necessarily have to be the same. Even if the times are slightly different, the lengths of the shavings 10 and 11 are only slightly different.

When the number of cutters is one, the shavings are spiral and are connected for a long time. Therefore, it is necessary to cut the shavings to an appropriate length in order to process the shavings. If the shavings are arranged in a slab and the shavings are alternately scraped off, the shavings are already short in length when dropped, so that the shavings can be easily treated.

Next, an embodiment of a deburring device equipped with the deburring cutter of the present invention will be described. FIG. 8 is a side view thereof, and the same reference numerals as those in FIG. 1 indicate the same parts. 1
Reference numeral 2 is a support shaft, 13 is an inclination adjusting means, 14 is a cutter rotating means, 15 is a cutter vertical moving screw which is an example of a cutter moving means, and 16 is a support base.

The cutter 2 is supported by a support shaft 12 which is inserted into a shaft hole of a cylindrical shaft, and extends from the axis of the long ingot 1 by a horizontal inclination angle α toward the side opposite to the transition direction of the long ingot 1. It faces outward and faces downward by a vertical tilt angle β. The left-right inclination angle α is fixed by arranging the support base 16 in an inclined manner. Further, the vertical inclination angle β can be adjusted by rotating the nut that is the inclination adjusting means of 13 and advancing the screw.

The small vertical movement of the cutter 2 is carried out by rotating the cutter vertical movement screw 15. Further, in the large vertical movement like the rear cutter in FIGS. 7A and 7B, the cutter is vertically moved together with the support base 16 by using a motor or the like not shown.

When it becomes necessary to rotate the cutter around the cylinder axis in order to bring a new blade portion into contact with the cutter blade 2a due to chipping of the blade edge 2a of the cutter 2 or the like, by turning the screw which is the cutter rotating means 14, The cutter 2 is rotated around its cylindrical axis together with the support shaft 12 so that the new cutting edge is brought into contact with the shoulder 1a of the elongated ingot 1. The tilt adjusting means, cutter moving means, and cutter rotating means are
The screw is not limited to the combination and size shown in the figure as long as it can adjust the tilt angle, position and rotation of the cutter.

[0039]

In the deburring cutter and apparatus for a long ingot according to the present invention, the cutter is a substantially cylindrical object made of ceramic, and the edge of the cylindrical side surface has a cutting edge made of a circular ridge, A part of the blade edge of the cutter is pressed against the shoulder portion of a long ingot that moves in the longitudinal direction to scrape the shoulder portion, so even if the portion in use of the blade edge is missing, just rotate it to create a new blade edge portion. Can be used. Therefore, it is easy to deal with the cutting edge of the cutter, and the need to replace the entire cutter is extremely reduced, so that the yield rate of the rough drawn line can be improved.

Further, by providing a recess on the bottom side of the cylinder along the blade edge of the cutter, it is possible to facilitate the escape of the shavings that have been scraped off, and the shavings are less likely to fly up. It is possible to improve the safety of people. Furthermore, by providing one or more annular grooves in the circumferential direction on the cylindrical side surface of the cutter,
Since the annular groove serves as a passage for the cutter cooling water, the cooling effect of the cutter can be enhanced and the life of the cutter can be extended.

Further, two cutters are arranged in tandem in the transition direction of the long ingot, and the rear cutter is moved up and down at a constant cycle toward the transition direction of the long ingot to make a rear cutter and a front cutter. If you can deburr alternately with the cutter of
The length of the shavings can be reduced, cutting of the shavings is not required, and the processing becomes easier.

Further, in the deburring apparatus of the present invention, a cylindrical cutter made of ceramic is used, but a large number of rolling rollers are already provided with grooves on the cylindrical side surface of an object made of cylindrical ceramic. . Therefore, it is possible to divert the rolling roller groove, which cannot be used as a rolling roller, to the cutter of the deburring device, and it is possible to reduce the cost of the device from the viewpoint of waste material utilization.

[Brief description of drawings]

FIG. 1 is a view showing a state where a deburring cutter for a long ingot according to the present invention is pressed against the long ingot, in which (A) is a longitudinal rear side view, (B) is a side view, C) is a front view in the longitudinal direction, and (D) is a top view.

2A and 2B are diagrams showing an embodiment of a deburring cutter for a long ingot according to the present invention, in which FIG. 2A is a side view and FIG. 2B is a bottom view.

3A and 3B are views showing another embodiment of a deburring cutter for a long ingot according to the present invention, in which FIG. 3A is a side view, FIG. 3B is a bottom view, and FIG. It is a figure.

FIG. 4 is a diagram showing deburring using the cutter shown in FIG.

5 (A) and 5 (B) are cross-sectional views of a cutting edge portion showing various embodiments of a deburring cutter for a long ingot according to the present invention.

6A and 6B are diagrams showing another embodiment of a deburring cutter for a long ingot according to the present invention, in which FIG. 6A is a side view and FIG. 6B is a bottom view.

FIG. 7 is a view for explaining an example of a deburring device in which two cutters are arranged in a row in the transfer direction of a long ingot in the present invention, and (A) shows a rear cutter lowered. (B) shows the rear cutter raised.

FIG. 8 is a side view illustrating an embodiment of a deburring device for a long ingot according to the present invention.

FIG. 9 is a diagram illustrating continuous casting and rolling equipment.

10A is a cross-sectional view showing a state where molten metal is held in a groove of a casting wheel, FIG. 10B is a cross-sectional view of a long ingot before deburring, and FIG. It is a cross-sectional view of the long ingot after deburring.

11A is a diagram showing a cutter relating to a deburring device according to the prior art, FIG. 11A is a plan view, and FIG. 11B is a side view.

[Explanation of symbols] 1: Long ingot 1a: Shoulder before deburring 1b: shoulder after deburring 2, 4, 5, 6, 7: Cutter 2a, 4a, 5a, 6a, 7a: cutting edge 2b, 4c, 5c, 6c: cylindrical side surface 2c, 4d, 5d, 6d: bottom of cylinder 3, 10, 11: Shavings 4b, 5b, 6b: concave portions 4e: Wall surface 7b: annular groove 8: Rear cutter 9: Front cutter 10, 11: Shavings 12: Support shaft 13: Tilt adjusting means 14: Cutter rotating means 15: Cutter vertical movement screw 16: Support substrate Arrow: Transition direction of long ingot

Claims (6)

[Claims] 1. A cutter for scraping burrs by pressing against a shoulder portion of a long ingot having a rectangular or trapezoidal cross section which is transferred from a casting machine to a rolling machine in continuous casting and rolling, and the cutter is made of a ceramic material. A deburring cutter for a long ingot, which is a columnar object and has a cutting edge formed of a circular ridge portion at the end of the side surface of the column. 2. The deburring of a long ingot according to claim 1, wherein the cutter is provided with a recessed portion on the bottom surface side of the cylinder along the blade edge to facilitate escape of the burr scraped off by the recessed portion. cutter. 3. The deburring cutter for a long ingot according to claim 1, wherein the cutter is provided with one or a plurality of circumferential annular grooves on a side surface of a cylinder. 4. A device for scraping off burrs on a shoulder of a long ingot having a rectangular or trapezoidal cross section which is transferred from a casting machine to a rolling machine in continuous casting and rolling, and which is made of substantially cylindrical ceramic end portion of a cylindrical side surface. A cutter having a cutting edge formed of a circular ridge, a support shaft that supports the cutter by inserting it into a shaft hole provided in a cylindrical shaft of the cutter, and a tilt adjustment that adjusts a vertical tilt angle of the support shaft of the cutter. A deburring device for a long ingot, comprising: a means, a cutter rotating means for rotating the cutter around its cylindrical axis, and a cutter moving means for pressing the cutter against the long ingot. 5. A long ingot is provided by arranging two cutters in a row in the transition direction of the long ingot, and raising and lowering a rear cutter toward the transition direction of the long ingot at a constant cycle. To the long ingot, and when the rear cutter is pressed against the long ingot, the rear cutter alternately releases the long cutter. The deburring device for a long ingot according to claim 4, wherein the shoulder portion of the long ingot is shaved. 6. A method of scraping off burrs on a shoulder portion of a long ingot having a rectangular or trapezoidal cross section which is transferred from a casting machine to a rolling machine in continuous casting and rolling, wherein the end portion of a side surface of the cylinder is made of ceramics having a substantially cylindrical shape. A cutter having a cutting edge made of a circular ridge portion, while maintaining a relative position such that the cylindrical axis of the cutter and the longitudinal axis of the long ingot are inclined, part of the cutting edge of the cutter is in the longitudinal direction. A deburring method for a continuous casting and rolling ingot, which comprises pressing the shoulder portion of the long ingot to be transferred to scrape the shoulder portion of the long ingot.