JPS62255008A - Method and device for removing burr - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for removing flash from metal workpieces such as slabs, blooms, billets, etc.

When making steel, for example, by continuous casting, it is necessary to cut the continuously cast steel that comes out of the casting machine into metal pieces of a predetermined length.
This metal workpiece is commonly referred to as a slab, bloom or billet. Each workpiece is then rolled into the final steel product.

The cutting is typically performed with an oxygen torch that directs high purity oxygen onto the workpiece and heats it to the oxygen ignition temperature. Therefore, an exothermic reaction between iron and oxygen produces a slag composed of iron oxide and other alloying elements. This slag is displaced in a molten state during cutting, and a portion of it forms a bulge along the lower edge of the cut end of the workpiece.
When it cools and hardens, it becomes what is called a "cast flash."

This flash causes subsequent processing of the workpiece.

For example, since the flash falls in the reheating furnace, it is necessary to remove and wipe it, which adds extra work. Furthermore, if the workpiece is reheated with flash attached, the flash will be stacked on the steel product during rolling of the workpiece, resulting in the production of defective products.

In the past, flash produced during torch cutting was typically removed by inverting the work piece and using a scarfing torch. However, this requires extra handling of the workpiece and requires additional equipment and labor. In view of this problem, mechanical chippers and chisels have been used, but these require strenuous labor.

U.S. Patent No. 2.301. ．． No. 923 proposes a flash removal technique in which the slag produced during cutting of a workpiece is rapidly cooled and immediately hardened so that it can be easily removed mechanically. This US patent states that it has previously been proposed to remove such slag from the uncooled workpiece by shearing, but this prior proposal is not sufficient because the slab is sheared in a heated state.

U.S. Pat. No. 4,390,167 also discloses removing slag of the type described above with a rotating metal cutter during movement of the workpiece; A type of cutter is also shown in which the tool is mounted on a vertically movable mount.

However, such cutters can only remove flints at one end of the workpiece and can clog and require general maintenance.

In view of these facts, it is an object of the present invention to provide a flash removal method and apparatus that can efficiently remove flash formed on a workpiece while being cut with a torch and that do not cause the above-mentioned conventional problems.

That is, an object of the present invention is to provide a flash removal method and apparatus that do not require complicated operations such as reversing a workpiece.

Another object of the present invention is to provide a flash removal method and apparatus that can be applied to a conventional workpiece conveyance line with only slight modifications.

Still another object of the present invention is to provide a simple and reliable flash removal method and apparatus.

Still another object of the present invention is to provide a flash removal method that can be applied regardless of the heated or cooled state of the work piece, and that can be applied to flash flashes not only at the ends but also at the side edges of the work piece. The aim is to provide equipment.

For these purposes, the present invention uses a cutting blade having an outer surface and at least one longitudinally extending side surface, with a longitudinally extending cutting edge defined at their juncture. The cutting blade is rotatable about its longitudinal axis and mounted directly adjacent to the path of movement of the metal workpieces supported on the conveyor, with the cutting blade being mounted transversely to the path of movement of the metal workpieces supported on the conveyor. Extend.

Means are provided for pivoting the cutting blade about a longitudinal axis, thereby bringing the cutting blade into contact with an adjacent surface of the workpiece being moved along the path of travel. Thus, flash on the adjacent surface of the workpiece can be cut and removed by the cutting edges during movement of the workpiece.

In a preferred embodiment of the invention, the outer surface of the cutting blade is flat and the cutting blade is provided with a second longitudinally extending side surface parallel to and opposite said first longitudinally extending side surface.

A second longitudinally extending cutting edge is also provided at the confluence of the second side surface and the outer surface. In this example, the cutting blade rotation means is such that the cutting blade can be selectively rotated about the longitudinal axis from a neutral position into a first tilted position or a second tilted position in both directions. In the neutral position, the outer surface of the cutting blade is parallel to and spaced apart from the surface of the moving workpiece, in the first tilting position one cutting edge is machined on the adjacent surface of the workpiece, and in the second tilting position the other cutting edge is machined. Engage the adjacent surfaces of the pieces. As a result, each cut Wr.
The edge can cut and remove flash at the corresponding end of its adjacent surface during movement of the workpiece. Furthermore, the workpiece moving means is such that the workpiece is moved in both directions,
It is possible to remove flash at both ends of the work piece.

The apparatus of the present invention is placed in a metal work piece conveyance line,
Can be attached to an existing conveyor roll base or a separate base. At this time, the cutting blade is positioned at a neutral position slightly below the movement path on the lower surface of the work piece. In a preferred embodiment of the method of the invention, a workpiece having flashing on both ends of the underside is passed over the cutting blade in its neutral position. The cutting blade is then tilted to bring the cutting edge into contact with the surface of the workpiece, and the flash at one end is sheared and removed by the cutting edge. Next, the workpiece is moved in the opposite direction and the cutting blade is tilted in the opposite direction to cut and remove the flash at the other end of the workpiece. In another embodiment of the method of the invention, the movement of the workpiece may be terminated once the end of the workpiece has passed the cutting blade. The workpiece is then moved back and the cutting blade is tilted so that one cutting edge engages the face of the workpiece to remove the flash at one end. The workpiece is moved backward again to return to the initial position, and the cutting blade is tilted to the reverse position to cut and remove the flash at the other end using the other cutting edge.

In another embodiment of the device according to the invention, a workpiece support means is provided which is elongated by its ends and side edges. Furthermore, workpiece transport means are provided for moving the workpiece supported on the support means in both lateral directions. Cutting blade means are provided extending along both side edges of the support means, each cutting blade means having an outer surface and a longitudinally extending side surface, and a longitudinally extending cutting edge is provided at the confluence of these cutting edges. Means are also provided for individually pivoting each cutting edge means about a longitudinal axis remote from the cutting edge so that the cutting edge faces outwardly from the support means. Additionally, means are provided for individually rotationally biasing each cutting blade means to bring the cutting edge into contact with an adjacent surface of the workpiece;
During the transverse movement of the work piece, the flash on its side edges can be cut and removed by the cutting edge.

In this example, the workpiece transport means may be provided with means for longitudinally moving the metal workpiece in both directions along the support means. Further, transverse cutting blades are provided near both ends of the support means and extending transversely thereto, and these are smaller than the cutting blade means to enable removal of flash at both ends of the work piece.

It will be appreciated that the method and apparatus of the present invention can remove flash from a metal workpiece whether the metal workpiece is heated to casting or rolling temperatures or cooled to room temperature. In addition, the flash removed from the work piece is dropped,
These do not accumulate on the cutting blade, and even when the cutting blade is working on a heated workpiece, the contact area between the cutting blade and the workpiece is small, so the temperature can be maintained at a relatively low temperature.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 shows a known steel casting machine of the type adapted to make two parallel continuous castings. An oxygen cutting torch 13 is mounted at the downstream end of each output line to allow the casting to be cut into individual slabs, blooms or billets, referred to herein as workpieces 14. As shown in FIG. 5, each workpiece 14 has an upper surface 15, a lower surface 16, a leading end 18, and a trailing end 18'. Also, on the lower surface of the work piece, there is a flash 17 adjacent to the leading end 18 and the trailing end 18'.
．． 17' is formed.

The apparatus of the invention is provided with conveying means in the form of a series of driven conveyor rolls 19, by means of which each workpiece is advanced along a horizontal movement path, the opposite ends 18, 18' of the forwardly directed workpiece being The flashes 17, 17' are made perpendicular to the path of movement.

However, this forward direction does not have to be exactly at right angles;
This is because the torch 13 may be set to cut the workpiece at an angle, and the workpiece may move on the rolls 19. Furthermore, conveyor roll 19
As will be described later, each workpiece is selectively moved in the opposite direction along the horizontal movement path.

The apparatus of the present invention is further provided with a cutting blade 20, which is attached to extend laterally below the movement path of each workpiece 14.

Each cutting blade 20 has a flat outer or top surface 21 that is rectangular in plan, with opposing side surfaces 22.23 and end surfaces 25.2.
It has 6. The length of the cutting blade 20 is made slightly longer than the width of the work piece to be processed. The angle A formed by each side surface 22, 23 and the top surface 21 is an acute angle, and this angle is preferably about 25 degrees to
The angle shall be 60°. Thus, a straight first cutting edge 28 extending in the longitudinal direction is formed at the junction of the side surface 22 and the top surface 21, and a longitudinal longitudinal edge opposite to the first cutting edge is formed at the junction of the side surface 23 and the top surface 21. A straight second cutting edge 29 is formed that extends in the direction.

The cutting blade 20' is pivotably mounted about a longitudinal axis remote from and parallel to the cutting edges 28,29.

Further, the cutting blade 20 is disposed in the immediate vicinity of and below the workpiece movement path, with the longitudinal axis of rotation of the cutting blade extending transversely to the workpiece movement path. In order to attach such a cutting blade, a support member 30 is disposed below almost the entire area of the cutting blade, and this support member is provided with stub shafts 31 and 31' projecting from both ends thereof, and these are used to rotate the cutting blade. Coaxially arranged along the moving axis.

As shown in FIGS. 1 to 3, the stub shaft 3
1 is supported by a bearing 32, and a similar bearing 32' is provided for the stub shaft 31'. The stub shaft 31 is made to protrude from the corresponding bearing, a lever arm 34 is attached, and the arm 34 is wedged with a key (not shown) so as to rotate together with the shaft 31. A pin may be used instead of a key to prevent damage to the device or workpiece in the event of a collision with the device. A movable piston robed end of a hydraulic cylinder 36 is connected to the tip of the lever arm 34. The base of the cylinder 36 is connected by means of a pin to a suitable base, to which the bearings 32, 32' are also mounted.

The apparatus of the present invention is further provided with means for selectively rotating the cutting blade about an axis set by 3111', thereby selectively rotating the cutting blade to the neutral position shown in FIG. Do what you can. In this neutral position, the top surface 21 of the cutting blade 20 is away from and parallel to the adjacent surface 16 of the workpiece 14 during movement along the path of travel. Cutting blade 2
0 can also be pivoted into a first tilted position (see FIG. 3) and an opposite second tilted position (see FIG. 2), in which the cutting edge 28 is aligned with the adjacent surface 16 of the workpiece. Also, 2nd P
In the IJ motion position, the cutting edges 29 respectively engage the adjacent surfaces 16 of the workpiece.

This cutting blade rotation means is diagrammatically shown in FIG. That is, a hydraulic pump 40 driven by the morph 41 is provided, which supplies working fluid to a solenoid-type four-way switching valve 44 for the hydraulic cylinder 36 via a safety valve 42 .

A holding valve 45 is provided between the four-way switching valve 44 and the cylinder 36, and a first switch 47 for driving the pump motor 41 is provided.
A second switch 48 is provided to energize the solenoid valve control circuit. Preferably, the switches 47, 48 also control the indicator light sources 49, 50. The solenoid valve 44 is controlled by a switch 52, which is connected to a central control unit 53. Alternatively, the switches 47, 48, 52 can be manually operated.

In order to provide automatic operation of the apparatus, the control system is further provided with a pair of workpiece position sensors, indicated at 54.55 in FIGS. 2, 3 and 4, which sensors 54.5.
5 is placed adjacent to the workpiece movement path. Also mounted on the shaft 31 of the cutting blade is a position indicator 56, with two sensors 58, 59 affixed adjacent to the indicator 56 for monitoring the rotational position of the cutting blade. These four sensors 54, 55, 58, 59 are connected to a central control unit 53, which controls the roll 19 in response to signals from the four sensors as diagrammatically shown in FIG. Assume that the workpiece drive unit 60 is operated.

The cutting blade 20 is mounted so that its axis of rotation extends transversely to the path of movement of the workpiece 14. The cutting blade 20 can extend in such a way that its axis of rotation, and therefore the cut 1!28.29, is exactly at right angles to the workpiece travel path;
Preferably, the cutting edge is connected to the workpiece movement path, thus the end face 18,
18' and flash 17, 17' by at least about 1 degree relative to a line perpendicular to it. The angle of inclination of the cut edges 28 and 29 is approximately 1° to 1° as shown in the middle part of FIG.
It is best to keep it within a range of 15°. In the neutral position of the cutting blade, its surface 21 is located slightly below the upper tangent surface of the conveyor roll 19, ie, the lower surface 16 of the workpiece, with a gap of approximately 2 inches (1.27 cm) therebetween. Also cutting blade 2
0, the top surface is at least about 1° relative to the adjacent surface 16 of the workpiece at each tilt position of the cutting blade, as shown at C in FIG.
Make it have an angle of °. If the tilting of the cutting blade 20 is too large, the cutting edge will dig or scrape the bottom surface of the work piece, and if the tilting of the cutting blade 20 is too small,
This does not engage with the flash of the workpiece and may jump over it or shear the flash, both of which are undesirable.

1 to 3 show an example of the method of the present invention.

In this example, the work piece 14 is advanced by the conveyor roll 19, and after its tip passes the cutting blade 20, the cutting blade is
The cutting edge 29 is tilted so as to face the flash 17' at the rear end of the workpiece and contact the lower surface of the workpiece. As the workpiece continues to advance, the cutting edge 29 engages and removes the flash 17'. Thereafter, the workpiece is moved in the opposite direction, and the cutting blade 20 is rotated back to the neutral position. Next, the cutting blade 20 is tilted in the opposite direction to cut the cutting edge 2.
8 into engagement with the lower surface of the workpiece. During this reverse movement of the workpiece, the cutting edge 29 engages and removes the flash 17. Next, the workpiece is stopped and moved forward again, and the cutting blade is rotated back to the neutral position to wait for the next workpiece.

FIG. 4 shows another example of the method of the invention. In this example, the work piece 14 is advanced until it reaches above the cutting blade 20 (first step and second step). When the sensor 55 is activated by this,
The central control unit 53 stops the workpiece and the hydraulic sill 36
The cutting blade is rotated by the operation of , and the front cutting edge 28 is brought into contact with the lower surface of the workpiece (third step). Next, the conveyor drive unit is reversely driven to move the work piece in the opposite direction (fourth
process). As a result, the cutting edge 28 engages with the flash 17 at the front end 18 of the workpiece and cuts it (fifth step)
.

After the front trace burr 17 is removed (sixth step), when the cutting blade further rotates as it passes the lower surface 16 of the workpiece and the front end of the workpiece, the sensor 59 detects this and stops the conveyor drive section. At the same time, the cutting blade is rotated back to the neutral position determined by the sensors 58 and 59 (seventh stroke). Next, the workpiece is moved forward again (eighth step) and positioned above the cutting blade. When the sensor 54 detects the rear edge 18', the cutting blade is rotated so that the rear cutting edge 29 contacts the lower surface of the workpiece (9th
Step), this cutting edge 29 can engage and remove the rear flash 17' (step 10). Next, the cutting blade rotates back to the neutral position determined by the sensors 58, 59 (11th and 12th steps).

Five positions of the cutting blade: (1) neutral position, (2) plane 16
(3) Maximum forward tilt position, (4
Additional cutting blade monic sensors may be provided to more accurately detect the position of a) rearward tilt in contact with surface 16, and (5) the position of maximum rearward tilt.

As is clear from the foregoing, the flash removal device of the present invention can be used to remove flash from torch-cut workpieces of a wide range of sizes and shapes, and the cutting blade can be used to remove flash from torch-cut workpieces of a wide range of sizes and shapes. It can be modified to suit the work piece. FIG. 5 shows a modification of the present invention. In this example, pinch rolls 62 and 63 are provided to support the workpiece against the cutting blade 20, and to prevent the workpiece from colliding with the cutting edge of the cutting blade. Make sure that the work piece does not lift up. The pinch rolls are of a well-known structure, and the driving means for the pinch rolls is also well-known, so that the work piece in motion will not be stopped even when the cutting blade comes into contact with the flash.

FIG. 6 shows yet another example of the present invention, in which the cutting blade is provided with an idler support roller 64 to support the work piece. The idler support roller 64 is rotatably attached to the support member 30 so that the top surface of the roller 64 is at the same level as the top surface of the roll 19 when the cutting blade 20 is in the neutral position shown in FIG. As shown in the figure, this embodiment is particularly useful when the work piece is too short to be supported by the roll 19 alone when advancing onto the cutting blade 20.

The axis of the idler support roller 64 extends perpendicular to the workpiece travel road. In other words, when the rotational axis of the cutting blade 20 is inclined at an angle B' with respect to a line perpendicular to the workpiece moving path as shown in FIG. 7A, the axis of the roller 64 is
is inclined by the same angle B' with respect to the axis of . FIG. 6 further shows a modification of the cutting blade, in this example the cutting blade is provided with separate elements 20', 20' with cutting edges 28, 29, these elements being removably attached to the support member 30. and exchangeable.

In the present invention, a well-known "skid" or the like can be used as a supporting and conveying device for the metal workpiece, and a well-known driven roll, slab shifter, push rod, etc. can be used to advance the workpiece. The flash removal device of the present invention can also be used to remove flash on the upper surface of a workpiece by inverting the workpiece or attaching the cutting blade 20 above the workpiece. Furthermore, the apparatus of the present invention can remove flash from the cut side surface in addition to the cut end of the workpiece by arranging the cutting blade in front of or at an angle with respect to the flash along the cut side surface of the workpiece.

When the well-known automatic braking means and detection means are used in the flash removal apparatus of the present invention, the cutting blade is rotated from a horizontal neutral position to a tilted position so as to engage the end of the moving work piece therewith. The cutting blade can act as a positioning means for the end of the new workpiece. In this case, the cutting blade is then returned to the neutral position to allow the flash on the lower surface of the workpiece to pass through the cutting blade, thereby moving the workpiece above the cutting blade, similar to the action of the device of the present invention described above. I will bring it to you and make it possible.

Next, an example of flash removal based on the above will be explained.

EXAMPLE A series of flash removal tests were carried out on low carbon steel plate workpieces in the following manner. In particular, the cutting blade is similar to that shown in Figures 1-3, and its thickness is 1 inch (2,54
cm), width 6 inches (15,24 cm), length 32
inch (81.28cm). The cutting blade was installed so that when tilted, the top surface formed an angle C=10° with respect to the lower surface of the workpiece, and the cutting edge angle A was about 38°.

Also, the work piece was 10 inches thick (25.4 cm) at ambient temperature.
m), width 22 inches (55,88 cm) length 3
0 inches (76.2 cm) in the width direction using a well-known oxyacetylene cutting torch. Accumulated flash deposited along the underside of each end of the workpiece after cutting is typically about 1 inch (2,54 cm) wide by about 21% inch (54,61 cm) long - about 7,716 inches (1,716 cm) thick.
11 cm). The workpiece during each test was supported on a roller conveyor table, and the workpiece was pushed transversely to the cutting blade by a hydraulic cylinder mounted perpendicular to the cutting edge. The hydraulic cylinder bore was approximately 2z inches <6.35 cm) and a pressure gauge was attached to it.

In the first series of tests, the cutting edge was mounted with its cutting edge parallel to the torch cut edge of the workpiece, and in the second series of tests, the cutting edge was mounted at a 5 degree angle to the torch cut edge.

The force applied to the cutting blade to remove flash from the work piece during the test is shown in Table 1 below.

Table 1 As shown in this table, the flash removal device of the present invention can remove flash from the torch cut end of a metal workpiece using a cutting blade that is parallel or inclined to the torch cut end of the workpiece. However, as is clear from Table 1, the force required to remove typical accumulated flash with the apparatus of the present invention can be greatly reduced by tilting the cutting blade relative to the cutting end of the torch.

9 and 10 show another example of the flash removal apparatus of the present invention at 110. This apparatus 110 was designed to be used in conjunction with a well-known steel casting machine as shown in FIG. Thus, the oxygen cutting torch not only cuts the continuous casting into individual slabs, blooms or billets, but also cuts the continuous casting in its longitudinal direction, so that the workpiece is cut not only at both ends but also at the side edges. It shall have cast flash.

In the illustrated example, the workpiece is assumed to have a rectangular block shape as indicated by 112, and has parallel upper and lower surfaces 113, 114, both end surfaces 115, 116, and opposing side surfaces 117, 118. Flashes are formed along both end faces as shown at 115' and 116' (see Figure 15), and at 11
7' and 118' are also formed along both sides (see Fig. 14).

The apparatus 110 of this example includes a horizontal workpiece support table 120 that receives a workpiece 112 from a casting machine, and the workpiece is placed onto the support table 120 by an overhead crane or the like. The workpiece support table 120 has opposite ends 122, 123 and opposite side edges 124, 125 so that the apparatus is configured in an elongated shape defined by these.

The support table 120 includes a frame formed by vertical plates 128 interconnected by guide rails 129 on both sides.

The horizontal upper end surface 130 of the vertical plate 128 then provides a horizontal flat support surface for the workpiece.

The device 110 is further provided with transfer devices 132, 133 adjacent to its ends 122, 123, which allow the workpiece to be moved in both longitudinal directions and also in both lateral directions. Each workpiece transfer device 132.13
3 is provided with a frame 135, which is mounted so as to be movable in the longitudinal direction of the device, and whose wheels 136 are received in the guide rails 129. Individual drives are provided for longitudinally moving the transfer device. The drive for the transfer device 132 includes a drive motor 138 at the device end 122, as shown in FIGS.
9 to rotate a pair of drive screws 140. These screws 140 extend approximately half the length along both sides of the device. Each drive screw 140 is threaded into a drive nut 141, which is secured to the transfer device 132 to ensure that both sides of the transfer device 132 are driven. Of course, a similar drive motor and transmission is mounted at the other end 123 of the device to enable rotation of a drive screw 142 similarly provided in connection with the other transfer device 133. According to such a configuration, two transfer devices 132.1
33 can be selectively moved toward or away from each other in the longitudinal direction, or can be moved simultaneously.

Each transfer device 132, 133 is further provided with a pair of laterally movable gripping arms 144, 145 which can be moved toward and away from each other so as to grip either side of the workpiece 112 as shown in FIG. so that they can be engaged as appropriate.

The gripping arms 144, 145 are also integrally movable laterally to allow the workpiece to be moved in both lateral directions. The drive mechanism for the gripping arms 144 and 145 for this purpose is well known and is not shown here. - by way of example, the drive mechanism comprises a first drive screw for opening and closing the gripping arm and a second drive for laterally driving the carriage on which the gripping arm and the first drive screw are attached; It is possible.

The exemplary device 110 is further provided with longitudinal cutting blade devices 148 , 149 extending along both side edges of the support table 120 . Each of these cutting blade devices 148, 149 comprises a plurality of cutting blades 150, which are aligned along the relevant side edge of the support table. Each cutting blade 150 has a flat top surface 151
and an outer surface 152 , and their confluence forms a longitudinal cutting edge 153 . The cutting blades 150 on each side of the device are individually mounted for rotation about a common longitudinal axis 155 or 156 (see FIG. 13) inboard of the cutting edge 153. Each cutting blade 150 is also biased by a spring 158 to provide an upward pivoting habit. Further, an abutment piece 128 is fixed to the vertical plate 128 adjacent to each cutting blade, thereby restricting the rotation of the cutting blade by the spring to a predetermined position, and the top surface 151 of the cutting blade is processed at this predetermined position. The cutting edge 153 is made to intersect with one support surface, and the cutting edge 153 is located on the Φ side opposite to the cutting blade rotation axis with respect to the work piece support surface. The angle A between the flat top surface 151 of the cutting blade and the workpiece support surface (see FIG. 14) is approximately 0 to 30 degrees at the above-mentioned planned position of the cutting blade, and preferably this angle A is 3 to 4 degrees. It's good.

The device 110 of this embodiment further includes an end portion 1 of the work piece support table.
A first lateral cutting blade 162 extending along the workpiece support table 122 and a second lateral cutting blade 163 extending along the other end 123 of the workpiece support table are provided. Since these first and second horizontal cutting blades have the same configuration, the second cutting blade 16
3 will be described in detail with reference to FIGS. 15 and 16. This second cutting blade 163 has a flat top surface 163 and a flat side surface 166, and the confluence of these surfaces creates a straight cutting edge 16.
form 7.

The cutting blade 163 is rotatably mounted around a horizontal shaft 168,
Means in the form of a spring 169 is provided to extend this transverse axis away from and parallel to the cutting edge and to give the cutting blade 163 a pivoting habit about the transverse axis 168. In the normal position of the cutting blade 163 shown by the dotted line in FIG.
Preferably, the angle A' formed by the work piece support surface is the same as the angle A mentioned above. Such a cutting blade 163
is thereby rotated downwardly to the solid line position in FIG. Also, as the workpiece moves in the direction toward the cutting edge as shown in FIG. 16, the cutting edge engages and removes flash on the lower surface of the workpiece.

To explain in detail the operation of the apparatus shown in FIGS. 9 to 16, it is assumed that the work piece 112 is being transported by an overhead crane to the position shown in FIG. 9 on the support table. The transfer devices 132, 133 are now brought closer to each other and the gripping arms 144. 145 to grip both ends of the workpiece. The arm 14 grips the work piece in this normal state.
4. The integral lateral movement of 145 moves the support table laterally toward one side as shown in FIG. This causes the sides of the workpiece to engage the flat surface of the cutting blade 150 and push the cutting blade downward against the spring 158, causing the cutting edge of the cutting blade to engage the flash of the workpiece. This can be removed using This action is also carried out on the other side of the workpiece support table as shown by the broken line in FIG. 13, and flash on the other side of the workpiece can also be removed.

The workpiece is then moved in its longitudinal direction by integral movement of the transfer devices 132, 133, causing the end of the workpiece to pass through the cut piece 163, as shown in FIG. Next, by moving the work piece in the opposite direction, the cutting edge 167 of the cutting blade 163 can cut and remove the flash 116' at the end portion 116 of the work piece, as shown in FIG. After that, the transfer device 13
2.133 moves the workpiece toward the other end 122 of the support table, and the cutting blade 162 similarly cuts and removes the flash 115' at the end 115 of the workpiece.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a continuous steel casting machine equipped with the flash removal device of the present invention, Fig. 2 is a perspective view for explaining the operating state of the device of the present invention shown in Fig. 1, and Fig. 3 is the same, but other operations thereof. 6 is a perspective view similar to FIG. 2 showing the state; FIG. 4 is a route diagram for explaining the process of the flash removal method of the present invention; FIG. 5 is a side view showing a modification of the device of the present invention in FIG. 1; The figures are a side view showing another modification of the device of the present invention in FIG. 1, FIG. 7 is an enlarged plan view of the essential parts of the device of the present invention, and FIG. A similar enlarged plan view of essential parts, FIG. 8 is a control system diagram of the device of the present invention, FIG. 9 is a perspective view showing still another example of the flash removal device of the present invention, and FIG. 10 similarly shows its operating state. FIG. 11 is a perspective view of the side cutting blade on the same side, FIG. 12 is a side view of one end of the same side device, and FIG. 13 is a side view of the side cutting blade on the same side.
13-13 sectional view in the figure, FIG. 14 is an enlarged sectional view of the main part showing the same side device in the state of horizontal movement of the workpiece, and FIGS. 15 and 16 are main parts showing the same side device in the state of vertical movement of the workpiece. It is an enlarged sectional view. 13...Oxygen cutting torch 14...Work piece 17.
17'... Casting edge 19... Conveyor roll 20... Cutting blade 28... Cutting edge 30
...Support member 31.31'...Stub shaft 32.32'...M receiver 34...Lever arm 36...Hydraulic cylinder 40...Hydraulic pump 41...Motor 44. ...Switching valve 45
...Holding valve 47...First switch 48
...Second switch 53...Central control section 54,
55... Workpiece position sensor 58, 59... Cutting blade position sensor 60... Workpiece drive unit 62.63... Pinch roll 64... Idler support roller 112... Workpiece 115', 116', 117', 118
'... Cast flash 120... Work piece support table 128... Vertical plate 129... Guide rails 132, 133... Transfer device 136... Wheels 138... Drive motor 139... Transmission Motive 14
0, 142... Drive screw 141... Drive nut 144.145... Gripping arm 148, 149... Longitudinal cutting blade device 15
0... Cutting blade 153... Cutting edge 158.
・・Spring

Claims (1)

[Scope of Claims] 1. Cutting the edge of a metal workpiece using a cutting blade having an outer surface and at least one longitudinally extending side surface, and at the confluence of which a longitudinally extending cutting edge is present. In removing flash formed on the surface of the metal workpiece along the edge, the outer surface of the cutting blade is moved against it in a direction substantially transverse to the longitudinal direction of the cutting blade and perpendicular to the edge of the workpiece. moving the workpieces across facing each other, tilting the cutting blade to engage the cutting edge with an adjacent surface of the workpiece, and moving the workpiece to move the flash in a direction toward the cutting edge of the tilting cutting blade; A flash removal method characterized in that the flash is cut and removed by the cutting edge. 2. The adjacent surface of the workpiece and the outer surface of the cutting blade are flat, the cutting edge is straight, and the cutting blade is tilted by rotating around an axis parallel to the cutting edge of the workpiece. Detailed flash removal method. 3. The flash removal method according to claim 2, wherein the rotational axis and the cutting edge of the cutting blade are inclined by at least about 1 degree with respect to a line perpendicular to the work piece movement direction. 4. Cutting a flat metal workpiece using a cutting blade having a substantially flat outer surface and a pair of opposing side surfaces extending in the longitudinal direction of the cutting blade, and a cutting edge extending in the longitudinal direction at the confluence of these sides. When removing the flash formed during torch cutting on the underside of the metal workpiece along both ends, in an initial direction substantially transverse to the longitudinal direction of the cutting blade, and in such a way that the flash is approximately perpendicular to the direction of workpiece movement. Passing the workpiece over the outer surface of the cutting blade to pass the flash at one end of the workpiece through the cutting blade, tilting the cutting blade so that the cutting edge faces the flash at one end of the workpiece, and moving the workpiece in the opposite direction. A method for removing flash by moving the workpiece to a cutting edge of a tilting cutting blade so that the flash at one end of the workpiece is cut and removed by the cutting edge. 5. Tilt the cutting blade in the opposite direction so that the other cutting edge engages the adjacent surface of the workpiece, and move the workpiece in the initial direction to remove the other flash from the other cutting edge of the reverse tilting cutting blade. 5. The flash flash removal method according to claim 4, wherein said other flash is cut and removed by said other cutting edge. 6. The flash removal method according to claim 4, wherein the cutting edge of the cutting blade is inclined at about 1 to 15 degrees with respect to a line perpendicular to the direction of movement of the workpiece during movement of the workpiece. 7. The flash removal method according to claim 4, wherein during the tilting of the cutting blade, its outer surface is inclined at least about 1° with respect to the adjacent surface of the work piece. 8. A device for removing flash formed along the edge of a metal workpiece during torch cutting, having an outer surface and at least one longitudinally extending side surface, and having a longitudinally extending surface at the confluence thereof; a cutting blade having an extending cutting edge, the cutting blade being rotatable about a longitudinal axis remote from the cutting edge and extending in a direction transverse to the metal workpiece travel path; means for attaching to a metal workpiece travel path supported by the system; and means for rotating the cutting blade to bring the cutting edge into contact with an adjacent surface of the moving workpiece, thereby cutting the workpiece at an adjacent surface of the moving workpiece. 1. A flash removal device comprising means for cutting and removing flash extending in a direction substantially perpendicular to a moving path. 9. A second blade facing the cutting blade in parallel with the side surface thereof.
9. The flash removal device according to claim 8, further comprising a longitudinal side surface and a second longitudinal cutting edge formed at a confluence of the second side surface and the outer surface. 10. The cutting blade rotating means is provided with a means for selectively rotating the cutting blade to bring one cutting edge into contact with an adjacent surface of a moving work piece. flash removal equipment. 11. The flash removal device according to claim 8, wherein the cutting blade has a flat outer surface and a straight cutting edge. 12. The casting flash according to claim 8, wherein the cutting blade is rotatably provided with an idler support roller means, thereby supporting the workpiece during movement of the workpiece along a movement path that traverses the cutting blade. removal device. 13. An apparatus for removing flash formed along an edge of a metal workpiece during torch cutting, comprising conveyor means for supporting and moving the workpiece selectively in both directions along a horizontal movement path; , a cutting blade having a substantially flat outer surface and a pair of opposing side surfaces extending in the longitudinal direction of the cutting blade, and forming a straight cutting edge in the longitudinal direction at the confluence of these side surfaces and the outer surface, respectively; means for pivotally mounting the cutting blade about a longitudinal axis extending transversely of the workpiece travel path in the immediate vicinity of the travel path; a tilted position, means for pivoting to a second tilted position, the neutral position spacing said outer surface parallel to an adjacent surface of the workpiece along the travel path, and the first tilted position machining one cutting edge; the other cutting edge is engaged with the adjacent surface of the workpiece in a second tilted position, and in these tilted positions the cutting edge is substantially perpendicular to the path of workpiece travel on the adjacent surface during movement of the workpiece. A flash removal device characterized by cutting and removing flash using a cutting edge. 14. said cutting edges are at least about 1.0 mm relative to each other and to a line parallel to the longitudinal axis of rotation and perpendicular to the workpiece travel path;
14. The flash removal device according to claim 13, wherein the flash removal device is of a type having a high precision. 15, the cutting edge is about 1 to
The flash removal device according to claim 14, which is inclined by 15 degrees. 16. A patent in which the cutting blade is mounted apart from the workpiece movement path, and the outer surface of the cutting blade forms an angle of about 1 degree with respect to the adjacent surface of the workpiece in the first and second tilted positions. A flash removal device according to claim 13. 17. The conveyor means comprises means for detecting the position of a moving workpiece and means for moving the workpiece in the opposite direction in response to the sensing means. The flash removal device according to scope item 13. 18. The cutting blade attachment means includes a support member fixed to the cutting blade, and an attachment shaft coaxially protruding from both ends of the support member with the longitudinal axis, and the cutting blade rotation means includes 18. The flash removal apparatus of claim 17, further comprising a hydraulic cylinder coupled to said sensing means for rotating said mounting shaft about said longitudinal axis in response to said sensing means. 19. An idler support roller is rotatably attached to the support member, and the roller extends in the longitudinal direction of the cutting blade and in a direction perpendicular to the work piece movement path, and the top of the roller is set at the neutral position of the cutting blade. 19. A flash removal device as claimed in claim 18, which is located on the same level as the conveyor means and is capable of supporting the work piece auxiliary during movement. 20. The flash removal device according to claim 18, wherein the cutting blade is provided with two elements to set a cutting edge, and these elements are detachably attached to a support member so as to be replaceable. 21. Pinch roll means is provided on a side of the workpiece moving path remote from the conveyor means to prevent the workpiece from being lifted from the conveyor means.
The flash removal device described in Section 1. 22. The flash removal device according to claim 13, wherein the control means is provided with another detection means for monitoring the rotational position of the cutting blade. 23. A device for removing flash formed on both side edges of a metal workpiece during torch cutting, comprising a workpiece support means having an elongated shape having both ends and both side edges, and a metal workpiece supported on the means. workpiece transport means for moving the workpiece in both lateral directions; provided along both side edges of the workpiece support means, having an outer surface and a longitudinal side surface, and having a cutting edge set at the confluence thereof; cutting blade means; and cutting blade mounting means for each cutting blade being pivotally mounted about a longitudinal axis remote from the cutting edge so that the cutting edge faces outwardly from the workpiece support means; cutting blade rotation means for individually rotating the cutting blade means about an associated longitudinal axis to bring the cutting edge into contact with an adjacent surface of the moving workpiece; A flash removal device characterized by cutting and removing flash on an adjacent surface of a piece while it is moving. 24. The flash removal device according to claim 23, wherein the cutting blade rotation means is provided with means for rotationally biasing each cutting blade toward the adjacent surface of the work piece on the support means. 25. The flash removal device according to claim 24, wherein the outer surface of each cutting blade means is substantially flat and the cutting edge is straight. 26. The workpiece support means provides a flat support surface, and the cutting blade rotation means is provided with an abutting means for restricting the rotation of the cutting blade by the biasing means to a predetermined position, and each Claim 25, wherein the flat outer surface of the cutting blade means intersects the support surface and the associated cutting edge is located on the side of the support surface remote from the longitudinal axis.
The flash removal device described in Section 1. 27. A patent claim in which each cutting blade means is constituted by a plurality of cutting blades, which cutting blades are aligned along corresponding side edges of said workpiece support means and are individually rotatable about a common longitudinal axis. The flash removal device according to item 26. 28. The flash removal device according to claim 26, wherein the angle between the flat outer surface of each cutting blade means and the support surface is about 3 to 4 degrees at the predetermined position of the cutting blade means. 29. The workpiece transfer means includes means for moving the metal workpiece in both longitudinal directions along the support means, and includes first and second lateral cutting blades extending transversely to the support means. each of the cutting blades having an outer surface and at least one side surface having a straight cutting edge at their juncture, each of said lateral cutting blades having a transverse axis spaced apart from and parallel to the cutting edge; means for pivotally mounting each transverse cutting blade about a transverse axis, the cutting edge extending longitudinally of the cutting edge; and means for pivotally mounting each transverse cutting blade about a transverse axis; is brought into contact with the adjacent surface of the workpiece that is moving along the support means, and the flash on the adjacent surface is cut and removed by the cutting edge while the workpiece is moving. Flash removal equipment. 30. The flash removal device according to claim 29, wherein the first and second lateral cutting blades are arranged near both ends of the work piece support means. 31. In an apparatus for removing flash formed on both sides and both ends of a metal workpiece during cutting with a torch, the workpiece support means is formed into an elongated shape by both end edges and both side edges and has a horizontal flat support surface. and workpiece transport means for laterally and longitudinally moving a metal workpiece supported on said means, extending longitudinally at both edges of said support means, and extending along said outer surface and at least one longitudinal side. longitudinal cutting blade means having directionally extending sides and having a longitudinal cutting edge set at their juncture; first and second transverse cutting blades having side surfaces and having a straight cutting edge at their confluence; and each longitudinal cutting blade means individually disposed about a longitudinal axis spaced from the cutting edge. means pivotally mounted to permit the cutting edge to face outwardly from the support member; and means for individually pivoting the first and second transverse cutting blades about transverse axes spaced apart from the cutting edge; each longitudinal cutting blade means and the first and second lateral cutting blades are individually pivotally biased for each cut; and means for bringing the edges into contact with an adjacent surface of the moving workpiece, each cutting edge being configured to cut and remove flash on the adjacent surface of the workpiece during movement of the workpiece. Deburring device. 32. The outer surface of each cutting blade means and the lateral cutting blade is substantially flat and the cutting edge is straight, and the cutting blade rotation biasing means restrains each cutting blade means and the lateral cutting blade in a predetermined position; 32. The flash removal device according to claim 31, wherein the flat outer surface intersects the support surface at a predetermined position, and the cutting edge is located on a side of the surface remote from the rotation axis. 33. each said longitudinal cutting blade means comprising a plurality of individual cutting blades, said cutting blades being aligned along associated lateral edges of said support means and individually arranged about a common longitudinal pivot axis; Claim 32: Rotatable
The flash removal device described in Section 1. 34. The angle between the flat outer surface of each of the longitudinal cutting blade means and the surface of the support means is 3 to 4 degrees at the predetermined position;
33. The flash removal device according to claim 32, wherein the angle between the flat outer surface of each of the lateral cutting blades and the surface of the support member is 3 to 4 degrees at the predetermined position.