EP1172159A1 - Mechanical burr remover for oxygen cutting burrs and cutting pearls after the transversal and longitudinal thermomechanical cutting of slabs, blooms and billets - Google Patents

Abstract

Device for removing oxygen whiskers (2) from steel workpieces such as slabs, ingots and billets comprises a whisker-removing roller (1), a whisker-removing roller segment on its horizontal axle journal, or a whisker-removing plate on its vertical axle journal (5) which can be rotated using an electromotor or hydraulic drive. The casing of the roller or roller segment coils partially or completely with a circulating knife (4). The knife interacts at an angle of 10-80 degrees to the whiskers.

Description

In connection with the worldwide increase in continuous steel casting plants, the predominant use of oxygen torches for dividing or slitting and the rationalization and improvement of existing plants, machine or even automatic debinding or debulking, i.e. the removal of the oxygen cutting beards, usually occurs on the lower edges of slabs and blocks and bludgeoning and the removal of the oxygen cutting beads, usually on the upper edges thereof, if possible after the flame-cutting transverse parts or such longitudinal parts, are becoming increasingly important. In particular, inexpensive, safe, low-maintenance and easy to schedule deburring agents with a high deburring rate are essential for the high production output of modern systems.
There are now a large number of well-working debaters, but the costs, deburring rates, maintenance costs, advantageous installation locations (in the production process) and, above all, risk of injury and high noise levels leave much to be desired.
The following deburring principles with associated essential components and the deficiencies and disadvantages that have now been complained about apply to all known versions of burrowers, which are also used in the attached bibliography, and which are successfully used.

Deburring principles:

The workpieces are stationary with the front or rear cutting bit above the deburrer for debarking and are debarred by moving them with a roller table, driving rollers or sliding device.
The workpieces lie stationary with the front or rear oxygen cutting bit above the deburrer for debarking out of the workpiece and are freed from the oxygen cutting bit by moving the deburrer or by rotating its drum against the fixed workpiece.
The workpieces are moved on a roller table at working or transport speed, the front and rear oxygen cutting bits are removed from the workpiece by overtaking and then by moving the debinding machine in opposite directions.
The workpieces are moved at work or transport speed on a roller table, the front and rear oxygen cutting bits are knocked out of the workpiece by overturning or counter-rotating a disc rotor.

For this purpose, the standing or moving embrasures of the first three systems are equipped with straight, horizontal shear bars or with juxtaposed, perhaps also elastic, liftable and lowerable, square or round shear blocks.
The deburrers of the fourth system use small hammers which are articulated and distributed over the entire circumference and along the entire length of the rotor, which raise themselves at high speeds of the rotor by centrifugal force and thus knock off the oxygen cutting bit running over it in many small pieces.

A version of a debinder, which is also successful but deviates from the above systems, is a machine that travels longitudinally to the oxygen cutting bit at a feed rate, which presses a plate-like shearing tool on a lever against the undersurface of the workpiece from below and swings the cutting bit by swinging back and forth Lever in the wagon right knocks off or shears off. Due to the limited size of the shearing tool, this version, mainly used on workpieces lying still, is only of limited production, and can only be used under certain, restricting circumstances, such as high time requirements, large space requirements and particularly high installation costs.
The three most successful Entbarts from today's perspective are briefly explained below.
A stationary or displaceable inserted bearer with a piston body, from which adjacent compressed air-operated pistons, which use shear caps as tools, push up and press against the undersurface of the workpieces and shear or press off the oxygen cutting bar depending on the material composition and temperature when the bearer or the workpiece is moved become. The main disadvantage of this debinder is its limited or cumbersome use with constantly moving workpieces, its many moving parts and the temporarily low deburring rate (below 99%), which means that after the deburring, small remnants of the oxygen bit remain on the workpiece or they only become folded up. Small pieces of the oxygen bit can also get stuck between adjacent pistons and shaving caps and greatly reduce the effectiveness of the bearer. This also reduces the rate of deburring. Accessibility, security, availability and low work noise are among the advantages of this embarrassment.

A drum debonder or works stationary and with a workpiece positioned exactly above it also rotation emitter, on the drum side by side and distributed around the circumference ring-shaped or round and also spring-loaded shear tools can be found. The The drum is raised hydraulically and rotated slowly, and it is exactly above it located oxygen cutting bit sheared or pressed. The robust and powerful The operation of this ember allows safe work even with larger ones Cutting oxygen beards but noise and time requirements (standstill and positioning) as well Bad deburring rates are the disadvantages of this in addition to the high effort Entbarters.

A tiltable embarrasser with front and rear, straight continuous scraper bar is the simplest and most cost-effective version of an ember. Although with the respective Tilt a shear bar well against the bottom surface of the workpiece the bad deburring rate with inclined, convex or concave surface and that unavoidable back and forth the unforgivably big downsides of this debacher, too when the deburring forces are attacked by an oblique, evenly increasing The shear bar and thus the working noise are kept very low.

The least expensive cheapest for a time-independent, quick debinding For example, without stopping through the workpiece with the smallest space requirement in the roller table behind a continuous steel caster in a roller table gap is the rotary debitter with the fast rotating rotor equipped with hammers. Of course, effort and System costs very high, but inclined position of the workpiece, convex and concave There are no under surfaces and different speeds of movement Difficulties for this bearer, if the narrow tolerance gap to the lower surface is observed.

But other problems are very outstanding:

Because the oxygen bit often and unevenly with the many small hammers great force and high speed is broken, there is a very large noise. The wear is disproportionately high and often it is destroyed Hammers, just as often or more often it comes up and thus Do not remove beard parts.

The maintenance effort is due to the exchange or replacement of the small hammers and the necessary removal and reassembly of mudguards particularly high, especially the latter very carefully attached to beard remnants or hammer parts flying away with high energy Need to become. Otherwise, serious injuries or damage may result metal parts flying far away.

Much quieter and safer is a bearer who is slower, for example at most with Roller table speed works. For this purpose, a bar-shaped piston body, under which Workpiece arranged and equipped with compressed air operated deburring pistons, according to Press against the lower surface against the resting or only slowly moving Cutting bit moved to debarking. The workpiece can also be used with the Oxygen cutting beard to be moved against the fixed embarrassment and that happens twice per workpiece at each end out of the workpiece to the respective one End there and beyond. No metal parts fly around dangerously, either if there is no cumbersome protective covering, but the workpiece must time consuming and taking up more space. But also with this Execution, parts of the oxygen cutting bit are folded up.

New version of the bearer registered for protection:

The novelty described below and claimed above as worthy of protection Execution of a peel pear (1) as in pictures 1, 1a, 1b and 1c is fundamentally characterized by a construction and an operation that a peeler or correspond to a peeling; that is, an oxygen bit (2) or Cutting beads (2) on a workpiece (3) are peeled off in a uniform manner continuous, fairly slow movement from about 3m / min to about 150m / min above the Beard speed of a beard as long as possible, albeit from paring knife pieces of 20 mm to 500 mm composite cutting edge of the so-called peeling knife (4) continuously, pressing along the workpiece (3) against the oxygen cutting bit (2). The peeling knife (4) is at 15 ° to the oxygen bit (2) and at 75 ° to the forward movement direction of the peeling knife (4). This paring knife (4) with a Cutting angle = chisel angle = working angle from 30 to 90 ° is as a paring knife spiral (4) or as a double peeling knife helix (4) with a distance to the bar inlet, that is, as a longitudinal spiral with a large diameter and a large pitch on Jacket of a de-barking roller (1) or a de-barking roller segment (1), as in Figure 3 shown.

This means that only one point of the peeling knife (4) comes into contact during rotation the workpiece (3) and the oxygen bit (2), both in forward and in Upward direction, the latter by an elastic damped pushing up At least one side arises when the other is set to the level of the sub-surface and is rotatably mounted. This pushing up or an associated turning on the other side can of course also be constructive in the area of the supports on the foundation be provided.

The peeling beater (1 to 18) proposed for this consists of the following components with the associated tasks (Figures 1 to 1d): The barking roller (1) carries a peeling knife helix (4) for peeling off the oxygen cutting bit (2) from the workpiece (3) Several 20 mm to 500 mm long peeling knife pieces (4) are bent and twisted in a helical shape and are with their stub axles (5) in sliding bearings (6) which are adjustable in height in corresponding bearing blocks (7) and via gears (8) of motors ( 9) can be rotated. A height adjustment for pressing the embedding roller (1) with the part of the peeling knife helix (4) located at the top against the workpiece (3) traveling on a roller table (12) is carried out from below by bellows cylinders (10) under the sliding bearings (6) in the bearing blocks (7). Torque supports (11) are provided between the gears (8) and the bearing blocks (7) and the sliding bearings (6) to prevent rotation of the drive. It makes sense to set the one sliding bearing (6) according to the normal position of the lower surface of the workpiece (3), to fix it and only to work with a constantly adapting sliding bearing (6).
Also shown in Figures 1 to 1d is the embodiment of the peeling knife (4) according to the invention, as a peeling knife helix (4) in T or dovetail grooves in the jacket of the embedding roller (1) from peeling blocks (4) inserted one behind the other with easily insertable and removable clamping pieces (13) with a clamping spring (14) recognizable. After inserting the peeling blocks (4) into the groove machined as a helix with a suitable pitch, as suggested at 15 °, around the de-barking roller (1), a fittingly closing clamping piece (14) is provided, which is provided with a clamping spring, pushed. To remove the clamping piece (13) and peeling blocks (4) for quick and easy replacement, only the former has to be levered out with a simple tool, for example a screwdriver, with the help of the ramp worked into the jacket of the embedding roller.

• trotz der durch das Schälen vollständigen Entbartung werden besser zu entsorgende Bartstücke erzeugt
• der erforderliche Walzenbereich zum Überholen des Sauerstoffschneidbartes (2) ist kleiner und die Bewegungsverhältnisse sind leichter anzupassen
• im Reparaturfall sind einzelne Schälklötze (4) schneller auszuwechseln
• bei breiten Werkstücken (3) wie Brammen werden keine zu großen Entbarterwalzen (1)Durchmesser erforderlich.

While Fig. 1 (to 1d) shows the peeling beard (1 -18) with a peeling knife helix (4), which has been continuously wrapped around the jacket of the debarking roller (1) depending on the pitch and diameter and length of the latter, you can in the invention Execution according to Figures 2 to 2d easily recognize that instead of a revolving peeling knife helix, several of them are now arranged as sections but completely with clamping pieces and alternating in the opposite direction. There are mutliple reasons for this:

• despite the complete deburring due to the peeling, beard pieces that are easier to dispose of are produced
• the roller area required to overtake the oxygen cutting bit (2) is smaller and the movement conditions are easier to adapt
• in the event of repairs, individual peeling blocks (4) can be replaced more quickly
• in the case of wide workpieces (3) such as slabs, there is no need for excessively large deburring rollers (1) in diameter.

These considerations ultimately led to the execution of a peeling softener (1-20) as shown in Fig. 3 (to 3d). Instead of a cylindrical roller with a large diameter, only one Entbarter roller segment (1) with a large radius of the base cylinder is used and arranged in a height-displaceable manner in the Entbarter lever frame (15). The lever frame (15) is arranged in rotary bearings (16) on a base plate (17) and is driven by a drive cylinder (18) from a starting position X to a central position Y to an end position Z, the head of the incoming workpiece (3) with the oxygen cutting bit ( 2) overtaking and disempowering. An opposite, debarking movement takes place when the foot of the workpiece (3) comes into the deburring area. The Entbarter roller segment (1) is designed to be height-adjustable by means of lifting cylinders (19) and lifting carriages (20) in slot-like guides on the upper ends of the Entbarter lever frame so that height movements and concave or convex shapes of the lower surface of the workpieces (3) can be compensated.
Further design information can be derived from the above and following parts of the description.

The option proposed in Figure 4 as a possibility within the scope of the protection request has a similar effect Shell peeler for narrower workpieces (3) for example blocks or billets for the one Duckling lever (15) with stub axles (5) rotates in bearing blocks (7) and the one at the upper end in a T- or dovetail groove, which can be pressed on by means of a lifting spring (21) Paring knife with the ideal cutting edge roller.

The depth of the peeling knife groove allows the peeling knife (4) to be pressed in in a guided manner. On the side, the peeling knife groove is delimited by retaining plates (23) cut into wedges and fitted into suitable clicks (24), and the lifting springs (21) seated in guide bores carry a pressure plate (22), which makes it easier to push the peeling knife (4) sideways after it has been pressed down.
A drive pinion (26), which meshes with the rack portion of the push / pull rod (27), runs in the push rod guide (28) on the bearing plate (18) and from the drive cylinder (17) in accordance with an elongated axle stub (5) the respective movement of the oxygen cutting bit (2) is moved. An articulated drive cylinder could also act directly on the duckling lever.

According to the claims in Figure 5 (to 5f), a peeling debarker (1 - 30) is shown, which uses the basic features of peeling debarking for endless use, in practice for long, longitudinally cut workpieces (3).
On a base plate (18) which is only slightly inclined to the vertical in the direction of transport of the workpiece (3) is a deburring plate (30) connected by means of an axle stub (5) to a gear (8) and a drive (9). This is tapered on its top according to the selected inclination of the bearing plate (18) so that it is parallel to the lower surface of the workpiece (3) in its central axis and thus also the cutting edge of a peeling knife (4). In these conical surfaces, the peeling knives (4) sit alternately and laterally offset parallel next to a pair of central axes, so that when turning against the oxygen cutting bit (2), the sharp-edged part of the peeling knife (4), which is located towards the center of the cutting plate, is first gripped and broken through ; this part of an oxygen cutting bit (2) is then peeled off with the cutting edge of the peeling knife (4). With the opposite direction of rotation of the bearer plate (30), arrangements of peeling knives on the central axes are also possible, a piece by piece continuous peeling of a possibly uninterrupted oxygen cutting bit would take place.
In addition to the known design of placing shear caps against the lower surface of the workpiece by means of pistons pushing upwards in compressed air cylinders, the rotating lifting of the peeling knife (4) also allows a spring-mounted version of the peeling knife installation due to the inclined arrangement of the debarking plate (30). As described above, the peeling knife (4) sits in a T or dovetail groove (turned upside down) on a pressure plate (22) above the push-in lifting springs (21). The groove, which is only open on one side, is closed with a penetrable pin (29) for easy replacement.

The execution of the peeling knife (4) can increase the penetration effect the oxygen cutting bit (2) for partial peeling for better disposal Widening of the inner part, i.e. to a parallelogram-shaped peeling block (4) can be added. Also the special design of the inner corners that attack first chisel-like projections are possible if they are at an angle of 90 ° to 150 ° are attached. Round-shaped peeling blocks (4) similar to shaving caps are also possible for peeling, however, only in the peripheral quarter facing the oxygen cutting bit (2) should work and still have vertical blades over the round, chisel-like edge, As shown in Figure 5e, for breaking the oxygen cutting bit to be peeled off are provided. Such peeling blocks (4) with round cutting edges and protruding vertical ones Cutting edges to break the beard are also close together as shown in Figure 5f can be used so that the tooth-like, vertical cutting edges mesh with each other and no remnants can get stuck between the peeling blocks (4); above all this applies to Cross oxygen bit after cross cutting.

Based on the explanations according to Figures 1, 2, 3, 4 and the corresponding ones below, there is also the option, which is also claimed as an industrial property right, of building a peel peeler (1-37) for cross-divided workpieces (3) that does not have a motorized, pneumatic one or hydraulic externally supplied and controlled drive, but is only operated by the pushing force and the movements of the workpiece. This is only sensible and possible because depending on the material quality and temperature of the workpiece (3), peeling deburring together with the oxygen cutting nozzle used, i.e. under normal operating conditions, only a fraction of the deburring force as with debinding by pressing or chipping or simultaneous shearing with several shear blades , Of course, the workpiece must also be long, thick, wide and therefore heavy enough to take on enough friction from the roller table and convert it into deburring energy.
Such a self-acting and self-controlling, strand-driven peeling beard (1-38) consists of a pair of drive levers (31) with a drive roller (32) rotatably mounted in it in the starting position at the level of the workpiece (3), which at the lower end in bearing blocks (7) is rotatably arranged on a bearing plate (18) and has at this end a gear (33) which, when moving through the workpiece (3), also has a pair of gears (34) rotatably mounted on an axle stub (5) in the bearing block (18) for reversing the direction of rotation and to increase the speed, which in turn drives a further gear wheel (35) on the debarker lever (15) for overtaking the oxygen cutting bit (2) on the head of the workpiece (3) and thus for debarking by means of a roller-shaped peeling knife (4) at the upper end of the debarker lever ( 15) turns. This latter embodiment with lifting spring (21), pressure plate (22) and holding plate (23) with holding clicks (24) on a degenerate roller segment (1) has already been described above.
A spring-loaded element (35) is articulated on the drive lever (31) and pulls a second pair of drive levers (31) pivoted against the transport direction when the first is moved by the workpiece (3), namely until it is below the lower surface of the workpiece (3) presses from where the spring-loaded element is tensioned until the end of the workpiece (3) runs over the drive roller (32) and releases the pair of drive levers (31). With the force of the spring-loaded element, supported by the first pair of drive levers (31), which presses against the lower surface of the workpiece on the outlet side, the second pair of drive levers (31) rises up on the inlet side and pulls a properly adjusted and properly adjusted debarring lever ( 15) in a well-known configuration in a working position for the opposing debating. The pair of drive levers (31) and the bearer lever are connected in a suitable position to one another by the bolt (36) and the pulling weight (37) pulls the entire machine back into the starting position when the workpiece (3) has completely overflowed the deburring area.

In addition to the above-described machines and devices for removing Oxygen cutting beards are still the following depending on the material composition of the each workpiece (3) and, depending on the type of deburring, the following for protection Facilities without a role model can be used sensibly:

In the case of tough steels and the longitudinal debarking after a workpiece has been divided lengthways (3), in spite of all other known and proposed measures, there can be unlimited long, at least indefinitely long pieces of peeled oxygen cutting bit that are difficult to remove, and may even clog and jam the system can.
Therefore, as provided in Fig. 7 (to 7c), a notch chisel (38), which is accompanied by two anvil discs (39) and sits with it on a notch lever rotatably mounted at one end, is placed on a common one by means of an impact cylinder (17) attached below Knocking the bearing plate (18) at regular intervals from below against the oxygen cutting bit (2), the anvil disks preventing damage to the undersurface of the workpiece (3) by the notch chisel, see also Figure 7a.

An automatic and uncontrolled version according to Figures 7, 7b and 7c shows one Air cylinder (17) (or a coil spring). The compressed air cylinder (17) sits under one Notch lever (40) and presses one of the two notch wheels (41) next to the notch chisel (38) against the lower surface of the workpiece (3). The notch wheel (41) is taken and rotated so that the notch lever (40) and the Drive cylinder (17) or a coil spring are depressed, and this Preload is then jumped up and notched when the highest point on Notched wheel (41) is run over by the workpiece (3) and the notched lever (40) through the shoulder can go up on the notch wheel (41).

If the workpiece (3) is made of hard, i.e. higher carbon steel, it can also happen that small remnants of the oxygen cutting beard after the The deburring process adheres more or less firmly to the base material. As in picture 8 shown, these residues with a scraper blade (44) according to the invention Hardened spring steel, which with the help of a scraper block (45) and a clamping plate (46) and some screws are fastened to a holder (42) which carries a guide roller (43), which in turn is always pressed against the oxygen cutting surface, for example in that this device sits on the deburring machine for longitudinal debinding.

Legend 1 - 13 skin peelers, - 20 skin peelers with roller segment, - 28 skin peelers for narrow workpieces, - 30 peeling debarkers with debarking plates, - 37 strand driven Schälentbarter

1

Entbarter roller or Entbarter roller segment

2

Oxygen cutting bit or oxygen cutting pearl

3

Workpiece (billet, block, slab, heavy plate)

4

Peeling knife, peeling block or peeling knife helix

5

stub axle

6

sliding bearings

7

bearing block

8th

transmission

9

drive

10

Air Actuators

11

torque arm

12

roller table

13

clamp

14

clamping spring

15

De-barter lever or de-barter lever frame

16

pivot bearing

17

Drive cylinder, impact cylinder

18

bearing plate

19

lifting cylinder

20

lifting

21

lifting spring

22

printing plate

23

Halteblech

24

holding Crack

25

mudguard

26

pinion

27

Push / pull rod

28

Rod-guide

29

pen

30

Entbarterteller

31

drive lever

32

drive sprocket

33

gear

34

gear pair

35

Federzugelement

36

bolt

37

Draw weight

38

notch Meisel

39

Amboßscheiben

40

notch lever

41

notched wheel

42

holder

43

leadership

44

scraper blade

45

scraper block

46

clamp

Claims (14)

Mechanical peeling pear to remove oxygen cutting beards and cutting pearls after the thermochemical cross cutting or longitudinal cutting of steel workpieces such as slabs, blocks and billets in hot and cold condition, at rest or moving on a roller table, characterized in that a horizontally mounted deburring roller or a deburring roller segment on her or on his horizontal stub axles or a bearer plate, slightly inclined to the horizontal, with its stub axle slightly inclined to the vertical are rotatable by means of an electric motor or hydraulic drive or driven by the moving workpiece via drive lever and gear, their bearing blocks, their holder for the peeling knife or the peeling knife itself can be raised resiliently and the jacket of the ducking roller or the ducking roller segment with a wholly or partially rotating peeling knife or the embedding plate on its surface is like a peeling knife strip, or like an eccentric one, arranged obliquely or in parallel, also assembled into rectangular or parallelogram-shaped peeling blocks or also has round peeling blocks, whereby the peeling knife or peeling blocks can attack the oxygen cutting bit at an angle of about 10 ° to 80 ° and can peel it off continuously or in parts. The round peeling block is used only with a quarter facing the oxygen cutting bit to be peeled out for peeling it out of the lower surface of the workpiece.
A special notch wheel is located close to or on the peeling bark for notching the beards on workpieces made of tough material and rotates in a pivotable notch lever mounted under the cutting bit and consists of one or more step wheels lying next to a multi-edged notch chisel for carrying the notch chisel and due to friction from the workpiece or by a special drive.
The notch lever rests with the end that carries the stepped wheel on the piston rod of a compressed air cylinder, which is pressed in when the stepped wheel is turned and can jump up after its step.
In a disc roller table, shells are clamped onto the axis in the gaps between the discs, which roll the oxygen cutting beards passing between the discs up to a maximum of 3 mm above the lower surface of the workpiece for better notching before the deburring. The tapered bowls have higher beards of more than 10 mm when rolled together on one side, thus improving the indentation and thus the interruption of the entire beard of oxygen when debinding. The shells are also equipped with chisel blades, which can be used for direct notching of the cutting oxygen bit.
For scraping small remnants of the cutting bit folded up from the bearer, a spring scraper is provided after the bearer, which consists of a leaf spring or spiral spring, a spring holder and a scraper and which can yield against the scraping direction or at a right angle or another similar. Mechanical peeling torch according to claim 1, characterized in that the peeling knife helix completely or partially wraps around the deburring roller, uniform or non-uniform distances being provided between the spirals, and in such a way that the oxygen cutting bit to be peeled off in full width or length over the deburring roller or can run in over the cutting edge plate without touching the peeling knife helix or the peeling knife spokes and afterwards they can peel off or cut off the oxygen cutting bit. The peeling knife helix can also be arranged in opposite directions, that is to say also crossing one or more times, wholly or repeatedly winding. Mechanical peeling pear according to one of claims 1) and 2), characterized in that at the end of a peeling knife helix or a peeling knife spoke a part similar to a peeling knife piece, a so-called separating chisel, is attached at an angle of 90 ° to 150 ° around the oxygen cutting bit before complete peeling for better removal. Mechanical peeling cutter according to one of claims 1) to 3), characterized in that the peeling knife helix or peeling knife spokes consist of peeling knife pieces which are inserted in dovetail or T-slots in the peeling roller jacket or in the peeling plate surface and are between 20 mm and 500 mm long and have a cross-section like an upside-down T or like a trapezoid or a combination of both. For this purpose, they are twisted or bent in their longitudinal direction. Mechanical peeling pate according to one of claims 1) to 4), characterized in that the round peeling block in the round cross section is equipped with a chisel-like horizontal cutting edge for touching the lower surface of the workpiece, above which the peeling block is formed as a polygon with vertical cutting edges at a short distance , Mechanical peeling pate according to one of claims 1) to 5), characterized in that the round peeling block, due to the speed ratios of workpiece and thus oxygen cutting bit throughput speed to cutting edge plate circulating speed in the area of the peeling blocks, always only with the quarter of its round cutting edge facing the oxygen cutting bit works to achieve the peeling effect. Mechanical peeling pear according to one of claims 1) to 6), characterized in that the debarking speed revealed as the difference between the necessary speed of movement of the peeling knife helix or the peeling knife spokes compared to the respective speed of movement of the oxygen cutting bit to be separated on slab, block or billet between 3 and 150 m / min, this difference being as small as possible, namely only two to five times the speed of movement of the oxygen cutting bit or the oxygen cutting beads to avoid noise and flying, dangerous beard, pearl or tool parts. Mechanical peeling beard according to one of claims 1) to 7), characterized in that the peeling beard roller rests in two independently height-adjustable bearing blocks, which in turn allows different oblique positions of the peeling beard roller on the lower surface of the workpiece to be compensated both in angular position and in height change, and that the bearing blocks are rotatably mounted.
These height-adjustable pedestals, at least one, sit on spring-loaded, pneumatic lifting cylinders, which can lift the peeling beard roller against the surface of the slab, block or billet to be exposed and press it in the vicinity of the oxygen beard, and this just before or while the peeling beard roller rotates. Mechanical peeling pear according to one of claims 1) to 8), characterized in that a pegging lever with a pegging roller segment and a peeling knife helix at the upper end is slightly inclined to the vertical under the workpiece, namely in a bearing where there is a decelerating gear is connected to a drive lever seated on the same axis, which projects vertically upwards into the roller table gap and carries a rotatably mounted roller at the level of the workpiece for pushing, pushing further and pushing down the drive lever. The oxygen cutting bit can be peeled off at the front end of the workpiece.
In the same bearing block, a second drive lever 2 with a draw weight is arranged horizontally in front of the drive lever 1 and firmly connected to a peeling knife helix which rotates obliquely in front of and above it. A spring tension element is provided between the drive levers 1 and 2, which enables the drive lever 2 to be in a horizontal position with the drive lever 1 in a vertical position by means of a pulling weight on the drive lever 1. This means that the drive lever 2 can also be pulled under the workpiece with its deburring lever, where it rolls up to the end of the workpiece, where it springs up under spring force and places the debarker lever with its peeling knife helix in front of the rear oxygen cutting bit and the latter with the energy of the workpiece that is running off can peel off. Mechanical peeling pear according to one of claims 1) to 8), characterized in that the or part of the peeling knife rests in at least two places, if not over its entire length, and thus compensates for height differences and inclined positions of the lower surface of the workpiece. Mechanical peeling pear according to one of claims 1) to 9), characterized in that the stub axles of the devil roller segment are flattened and are arranged in a height-displaceable manner in the segment levers corresponding to the end faces of the devil roller and rest on lifting cylinders for pressing against the workpiece lower surface. Mechanical peeling beard according to one of claims 1) to 10), characterized in that the peeling beard plate rests on axially and radially acting bearing blocks, the support housing of which is adjustable in height on resiliently acting pneumatic lifting cylinders which the peeled beard plate with the rectangular, parallelogram-shaped or round Can lift and press peeling blocks against the exposed surface of the workpiece in the vicinity of the oxygen cutting bit, and this just before or during the peeling cake plate rotates. Mechanical peeling torch according to one of claims 1) to 11), characterized in that a notched chisel is used for notching and thus for the peeling piece by piece of an otherwise long, peeled oxygen cutting bit of tough materials, and that this notched chisel is centered and with anvil disks on a powerful notch lever stored and carried by a striking cylinder under the workpiece running over it until a sudden striking of the striking cylinder causes the notch lever and notch blade to flip up. In addition to its cutting edge, the notched chisel has one or two anvil disks, which serve to prevent notching in the lower surface of the workpiece located next to the oxygen cutting bit. The anvil disks can also be spiral-shaped notch wheels that turn against the workpiece surface by friction, press a compressed air cylinder or a spring through the spiral shape, which jump up when the shoulder overflows and cause the notch impact at regular intervals. Mechanical peeling beard according to one of claims 1) to 12), characterized in that a beard scraper which resiliently presses against the workpiece is used to scrape off residues of the oxygen cutting beards after the debarking, the scraper is bent forwards and otherwise backwards in a scraper direction at its ends Spring leaf as a scraper blade, a beveled scraper bracket and a clamping plate with clamping screws. The ends of the scraper blade that serve as scraper blades are hardened or reinforced with hard blades that protect the scraper blade against mechanical and thermal loads and point from bottom to top in the direction of the scraper due to the bevel of the scraper frame.
Another version of the beard scraper consists of a compression spring as a scraper spring with an attached scraper blade mounted in a clamp-like scraper block.

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