DE1502740A1 - Rotating cutting device for metallurgical rolled products - Google Patents

Description

PATENT LAWYERS DIPL-ING. H. LEINWEBER dipl-ing. H. ZIM

OLD J Ul \

.ing. H. ZIMM & MM

Pofftchadc-Konio: Bank account: Telephone Tel.-Adr.

Munich 22045 Dresdner Sank AG. 'MMüdmi (Mil) 297 ·! ·

Munich 2, Marlenplatz, account no. 927 »

z / we 1502740. W ^ ,, Ro,. »I..7,, au ,,.

(Ku * t »rmann-PaMage)

^the 9 March 1965

DEMTTHE-IEVIVIER, Courbevoie (Seine) / France

and
SECIm, Courbevoie (Seine) / France

Rotating cutting device for rolled metallurgical products

When cutting rolled products according to their flow from the rolling mill, there have been many Years of great problems, the solution of which was often sought by experts without 100% success,

Such are numerous types of rotary cutters known that at relatively low Vialzgeschätze work almost satisfactorily, however, these difficulties decrease with constant speed increase to a large extent, at least when workpieces with a relatively large profile are to be cut. the kinetic energy that must be imparted to such rotary cutters then becomes very high. If now aleo in the extreme, such a kinetic energy at low

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Rolling speeds can be achieved because you have the necessary time, but this must be at high speeds can be achieved in a very short period of time and thus requires the use of a very powerful motor, at least if a cutting operation is to be carried out with every revolution of the drive shaft. Besides, in such a thing arises Case a considerable inertia, which quickly becomes an obstacle.

It follows that a rotating cutting device, which is sufficient, for example, for billets of medium size, which with a maximum speed of approx. 5 m / sec: ,, from a rolling mill exit, cannot be used for cutting products with the same profile at a higher speed «

In addition, the performance of those necessary to operate these cutters and overcome their inertia Motors use very large couplings, which therefore do not provide satisfactory precision with small tolerances (e.g. + 15 mm) allow o

It follows that at the rolling speeds currently achieved of approx. 12 m / sec »the conventional cutting devices can only be used for products with a small profile.

The application of the known devices to rotating Cutting devices for cutting profiles with large cross-sections at speeds over 5 m / sec. would have such a Enlargement of the engine power and accordingly the

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Volume of the couplings means that 'this solution cannot be taken into account _o

Consequently ii.it the aim of the invention to provide a rotating

To manufacture cutting device for v / alz products whose working

en
speed / _e or range from 12 m / sec dariber and intersecting at these speeds products whose profile has a surface which can reach up to about 150C mm *

These objects can be achieved in that the rotary cutting device according to the invention comprises a kinematic device with senr low inertia, which is characterized in particular by the fact that the clamping jaws of the cutting device only nsch are at least two revolutions of the drive shaft in the cutting position, after at least one time Rotation of the drive shaft a so-called "approach position" run through, in which the cutting blade edge of the jaw is exactly in the plane in which it is when the jaw is in the cutting position, but it only approaches the product without cutting it.

This arrangement makes the Ein-kützüö ues Lesrjer very flexible, because it enables both the starting ; _; 1e .Micii the jtillr.tilt times can be increased.

In the kinematic Ein_ rioüturig of the device according to the invention, the speed of the cutting head is superimposed on the actual drive speed, so that the following possibilities exist: '

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- To significantly reduce the drive motor power of the cutting device;

- to start the engines every time you cut;

- omit the clutches and the inertia flywheels;

- A very high cutting force with reduced driving force compared to the previously known cutting devices achieve*.

According to a preferred embodiment of the invention Cutting device comprises the kinematic device in combination with one another: a clamping jaw consisting of one horizontal swing arm with a head comprising a cutting blade, the ends of which are fixed on two eccentric shafts which are in turn firmly connected with two large-diameter pinions, which form planetary gears, which are attached to the crank pin two parallel, synchronized in their rotation crank arms are applied, the satellite wheels each with one non-rotating planetary gear with a smaller diameter, which are arranged coaxially to the axis of each crank arm, and a mating device opposite this clamping jaw.

Due to this device, the cutting blade describes an epicycloid, elongated path and becomes parallel to the Axis of the track of the product held.

According to another Mferkmal the invention, the vertex of this path is the time of cutting close to the running plane of the product, on a perpendicular to

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this plane, with this vertical line being the axes of the planetary gear, of the satellite wheel and the Senneidblade edge connected

According to a further feature of the invention is the relationship between the planetary and satellite gears 1/2 to 1/5 · and preferably 1/3 «

According to a preferred embodiment, corresponds to the counteracting device representing the second clamping jaw of the cutting device to that of the first clamping jaw *

Further advantages, details and features of the invention emerge from the following description. On he ä drawing the invention is shown, for example, and although the drawings:

Fig. 1 is a side view of the rotary cutting device according to the invention;

Figure 2 is a sectional view taken along line 2-2 of Figure 1; 3 is a schematic view showing the swing arm carrying the cutting head in the so-called "starting position"

reproduces;
Fig. 4 is a schematic view of the swing arm in the so-called.

"Approach position";
Fig. 5 is a schematic view of the head in the "Sehneid-

position";
Fig. 6 is a schematic view of the head in the so-called,

"Standstill";
7 is a side view of a second embodiment of the rotary cutting device according to the invention;

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Fig. 8 is a sectional view taken along line Ft-8 of Fig. 7;

and
Figo 9 and 10 Schemstische Ansicntsn, o.ie jev. ^ Ils the .4r: - Milling and cutting position de? the Schsingams carrying the cutting blade in the cutting device according to FIGS. 7 and 8.

In Figures 1 and 2, the cutting device comprises two counteracting Klenrbacken devices I and II, which on the one hand a horizontal plane X-X are arranged, the other the product to be cut runs from left to right in these figures.

Since these two facilities I and II are shown in e'en Embodiments correspond, is in the description only on the glue jaw device lying above the plane X-X I referenced «

The cutting device comprises a housing consisting of a base plate 1 on which two parallel, vertical, front and rear flanges 2 and 3 are attached, a strut 4 on the upper part, and at least one surface angle or another reinforcing part , such as 5, which connects the front flange 3 to the base 1, bcw _{e is supported} on this.

Two crank arms 6, 7 rotate in the flanges 2, 3, with their arms and crank pins protruding beyond the front flange 2.

The barrel taps of the kurtie arms 6.7 are over their entire length

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Length, provided with an Axidbonrung and run p ^ r ^ llel to each other, with their axes in a likewise parallel to Plane X-X extending plane are located.

Two drive wheels 8, 8a with the same diameter and the same number Z urns are between the flanges 2, 3 on the barrel the crank arms 6,7 attached.

These 8,8_a drive dogs are both available with a third one Drive wheel 9 in engagement, which is firmly connected to a shaft 10 is driven by a motor (not shown) νerden can «

An axis 11 (11si) (Fig.2) passes through the axial bore of each of the journals of the crank arms 6 _{ 7, one of the ends of each of these axes 11 C11a_) on the rear flange 3 by means of any suitable device shown schematically at 12 against Rotation are secured (Figure 2), and its opposite end 13 (13a,) protrudes over the pin 6 or 7 of the crank arm and a pinion 14 (14a) attached thereon, which consequently ge _; ^r _, en rotation is secured, whereby the training is such _? that each crank arm 6,7 in the flanges 2,3 revolves around each axis 11 (11a), the crank pin d'jr crank arms each describing a circle around their immovable pinion 14 (14 ^) and the pinion 14 (14jj) each jich.'re 11 (11a_) have the same number of Z ^ 'hne,

The crank pin of each crank arm 6,7 carries a freely movable Säellitenrad 15 (15a), which with the planet wheel 14 (14a)

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is in mesh and the ratio of the teeth of the planetary gears to those of the satellite wheels is 1/3 »

Each satellite wheel 15,15a_ comprises an eccentric axis 1b, i6a ^ and these axes 16, 16s ^ are via a swing arm 17 connected with each other; the latter comprises a head 18 with a cutting blade 19 and thus constitutes a jaw of the Cutting device is, the training being such that the swing arm 17 is horizontal in its lowest position is located in the vicinity of the plane X-X (this position is hereinafter referred to as the "cutting position") when the axis 13, the axis of the satellite wheel 15 and the axis 16 on the one hand and the axis 13a_, the axis of the Sstellitenraöes 15a. and the axis 16 ^ on the other hand, two straight lines running perpendicular to the running plane X-X of the product to be cut are aligned.

In this way, a kinematic device is created, with the help of which the forces resulting from inertia are significantly reduced and in which the axes 16,16a_ each describe an elongated epicycloid, and it can be seen that the airspeed of the satellite wheels of those the crank arms superimposed

Since the cutting force is mainly directed to the blade 19 carried by the head 18 of the swing arm 17, it can be seen that the crank arm 7, the planet gear 14a and dos satellites 15a. with its pivot 16a_ comprehensive device mainly serves to end the ^ u. the head 18 opposite

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To support swing arm 17 and this swing arm in the horizontal position ' to hold «- ■

It follows that the crank arm 7, the planetary gear 14 a, and the satellite wheel can 15a_ have a smaller mass than the corresponding elements that carry and carry "result, the inertia of the whole is further reducible the head 18 of the swing arm 17 _e

The counter device II opposite the head 18 corresponds in a preferred embodiment of the invention to the device described above. It is arranged below the running plane XX of the product, also includes two crank arms driven by drive wheels and carries planetary gears and satellite gears whose axes are supported by a swing arm 17 ^f a head 18 'and a blade 19' are connected to one another, the entirety being driven synchronously in the opposite direction »

If the skins 10 turn clockwise (as shown in FIG. 1) in Rotation is offset, the pinion 9 takes the pinions 8 and 8a_ counterclockwise and the crank pins of the crank arms 6 and 7 cause the satellite gears 15 »15a to form a circle to describe the planet gears 14,14a, the satellites 15 and 15a both counterclockwise, i.e. in the running direction of the product circulate.

The axes 16,16a_ shift synchronously and describe an elongated epicycloid, in that they hold the swing arm 17 in a horizontal position over its entire circumference

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when the axes 16,16a_ supporting the clamping jaw are at the apex of the epicycloids in the cave of the plane X-X, the epicycloid path forms the edge of the blade a tangent to it. of this axis, as well as the core 19 'of the Ge-eneinrichtung II. The cutting device then assumes its cutting position (Fig.5).

Because the ratio of the number of teeth between the drive wheels 14 and 15 on the one hand and 14a; and 15a, on the other hand 1/3 the axes 16, i6_a are angularly adjusted by 120 ° in With respect to their starting position, when the crank pins of the crank arms 6,7 make a complete revolution about the axes of the Carry out planet gears 14,14a_.

The mode of operation is as follows: the drive motors are started so that they pin the crank arms of the crank arms Drive counterclockwise when the machine is up in the position shown in Fig. 3, the so-called "Aus ^ ongslage" in which a straight line Y connecting the axes of the drive wheels 14 and 15 is perpendicular to the plane X-X and the angle ABC is equal to 12u °, where the point A denotes the axis 16, Point B is the axis of the satellite wheel 15 and point C is the point of intersection the straight line Y with the running plane X-X of the product to be cut.

After the clamping jaw, starting from the starting position according to FIG. 3, described a little more than one complete revolution has, i.e. around 390 °, it reaches the position shown in Fig. 4, in which the axes I6 »16a_ (and consequently the

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Purist A) located on the verticals, such as e.g. I, towards level XX starting from the scythes of the planetary gears 14,14a_ approximated «'.

In this, the so-called "approach division", the blade 19 of the head 18 is exactly in the plane in which it comes when the clamping jaw is in the cutting position, ad «, on a perpendicular I to the plane XX starting from the axis of the planetary gear Nevertheless, the axis of the satellite rudder 15 is then ^{offset by around ^ u 0} after it has exceeded this vertical - as shown in FIG : the crank arm continues and consequently the blade 19 does not cut the product (this position could be referred to as the "blind cutting position").

The rotation takes its course and after the crank performed its second revolution, d, "h _e after erpich has turned to the" Ann Uierungsüteliung "to 39Ü °, it performs the S-gtellitenrtd 15 and its pivot pin 1h in the in Figo 5 d arge & to-lite "Sc Ί \ ια id"-St> llung. The product is then cut jiA the Un; ^r lrOiIUiTg the i urbelarme can be stopped after another complete .Ur -. 'rotation ;: ubgon. because the jaw is in FJ ^. 6 .1 -,! - set "standstill position is ·

This position is analogous and symmetrical to that in Fig. shown, where the angle ABC is also equal to 120 ° ict, however, the point A is then on the opposite side with respect to the vertical Y, - τ

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Now the Kurte can rattle around a full turn be rotated in reverse to bring the jaw into the "home" position. Then a new cycle can begin «,

It can be seen that with this device it is possible to keep the blades perfectly below one another and perpendicular to the running axis of the product, whereby free cuts can be achieved without deforming or "fraying" the end of the bars or other rolled products _e

Since the inertial forces are further reduced un6 the speed of the satellite wheels of those rier crank poor superimposed, whose speed and the power of the motors can be reduced so that the start time can be extended, in order to start the motors with every scanid operation and to omit the clutches and the inertia wheels.

With this cutting device, rolled products can be included Working speeds of approx. 1 2 m / sec. get cut,

whose profile has a surface area of approx »70c mm, whereby it the low acceleration necessary to start the assembly allows very easily the high rolling speeds currently in use to reach·

In FIGS. 7 and 8, a further embodiment is shown Cutting device according to the * invention shown with their Help malt products can be cut that as a profile

have a surface area of about 15C0 mm, with working speeds that are much higher than those of the

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hitherto known rotating slide devices.,

In this embodiment, the satellites are loosely applied to the crank pins of two parallel and synchronously rotating double crank arms or crankshafts, with the eccentric axles firmly connected to the satellite wheels surrounding the axes of the latter, and two vertical housings arranged side by side in parallel , v / o at one of the size ^; ! ^: -vuse the driving organs and the other the active organs of the sciineide device deceives, d..h. The crankshafts and the linen table planetary and satellite device are connected, the crankshafts being connected to the output shafts protruding from the first G-eMuse by means of a detachable coupling device ο

In FIGS. 7 and 8, two separate cfelruses A ₁ B are provided, each arranged side by side, std and jsf'eil-s. consist of two parallel flanges 2, 3 and 2a_, 3_a, ■ · ie vertically b.ii bases 1 and 1_a_ are arranged «.

The Ge.v.ius9 A supports the drive orgf-me of the cutting position from, namely two horizontal and parallel shafts 6 ^, which rotate by means of suitable bearings in the flanges 2,3.

The shafts 6u (only one of which is shown in FIG. 7) each carry a pinion 80 (80a _- ), both of which have the same number of teeth and each work together with a pinion 90, which is arranged between them and also the has the same number of teeth.

Because of this arrangement (FIG. 8), the waves are 60

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synchronized in their rotation and isufen in the same direction around.

One of the ./eilen 60 is ei. Pinion 1υϋ with grc ^! em diameter applied · ,, that, for example, π it the 'Light of a (dargestsj-ites not) Mitriebsniotors fe ^r -'t is connected to a pinion 1ü1 π it impeded diameter, total? rn? NENv / irkt *

It is seen that the cutting device according to the invention as described at z ^T "ei snologe includes Klenrr.-bake G egeneinrichtungen" Consequently, reference is made in e'er description only one of these facilities, "

The ends of the "/ rush oil fries, as shown in Fi g ^ via the flange 2 ₀ 7 is also seen εν to their connection. Permit the sktiven organs of the cutting device (kinetic ^r i ^c che means) G- Housing B are carried by means of a suitable connection ₀

In case B, two horizontal and p '? R ^fl llele crank arms 61 run (and 61a ,, the crank arm 6i_a from Fig. 7 is not visible) in the flange 3a_ to and project beyond this in the direction towards the flange 2 of the casing addition, sodeß they can be connected to the shafts of the drive device. Two horizontal, parallel, rigid axes 110 (and 1.töa_, the axis 11Ua_ cannot be seen in FIG. 7) penetrate the flange 2a in the vertical plane of the axes of the crank arms 61 (61a) rotating in the flange 3a_.

The outer ends of the axles 110 (110a _- ) each comprise an enlarged head 120 which is firmly connected to the flange 2a_ in order to secure the axles 110 (110a) against rotation «,

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The inner ends of the axles 110 (110a) carry each a planet pinion 140, which is fixed on them and consequently cannot revolve »

An organ or a hollow axis 111 (Figo7) coaxially surrounds each of the axes 11 O (110a) and k-mn around the latter in the FL-UxBCIi 2a_ dr- ^ en. This urgan 111 surrounds a part 112 of the same piece, which runs radially in relation to the axis 110 and is penetrated by a bore into which the crank pin 21 (21a_) of the iuiroelarm 61 (o1a_) protrudes _o

A satellite pinion which can be operated with the planet pinion 140 1! Ρυ (15t-a_) is loosely attached to the crank pin 21 (21a_), and zivar by means of a hub 113, which the crank pin 21 (21a_) surrounds almost its entire length; the have 11;) runs from the inside of the satellite pinion 150 (Fig. 7) from sideways ο

The outer circumference of the hub 113 (113a.) Is circular, its axis is parallel to, but offset from that of the crank pin 21 <, with other locations, the outer circumference of the IkDe 113 is eccentric with respect to the axis of the crank pin 21 adjusted and is concentric from head 180 of the cutting blade 1 ^ 0 trageric he, ochwin / arms 170 surrounded.,

iii.fi Formation of the other endec of the ochwiu.jarm 170 opposite the Klin'-e 190 corresponds to that described above.

further in a Geiriuse 22 is provided that the -Kitzel 14υ and 15υ surrounds and an opening · includes that of the honeycomb of the satellite 150 is penetrated

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It can be seen that the arrangement of the crank arms 61, the axes 110 and the organs 111 represents two crankshafts arranged horizontally and parallel to each other »

Any suitable releasable coupling 23 is provided for connecting the crank arms 61 to the shafts 60. This makes it possible to separate the kinematic device from the drive elements, which makes maintenance and repairs of the Cutting device facilitated

It follows from this that the swing arm 170 is supported between two holding points lying on either side of it and is not self-supporting is arranged ο This means that the distance "which the Eccentric axes with the ends of the swing arm separates from the axes of the satellite wheels, are shortened »-

In this embodiment the ver; / ^; ltnis between the planet-satellite system 140,150 1/2, but is variable up to 1/5 »

The mode of operation of the kinematic device described above is the same as that of the embodiment according to FIGS. 150 revolve around the planetary gears 140 are thereby engaged therewith and in turn drive the Exzenternaben, which support the ends of the rocker arm ^17t; driven by the crank pin 21 Satellitenr.

Folglicii passes through the one consisting of the swing arm 170 >. ■ - -.'-- ■■

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Clamping jaw a so-called "approach position" (Fig. 9), in which the blade 19u, the axes of the crank pin, the hub 113, the satellite gears 15u and the planet gears 14ü at the same time one and the same vertical are aligned with respect to the running axis X-X of the product at each end of the swing arm » Nevertheless, the axis D of the hub 113 lies between the axis of the Satellite wheel 150 and that of the planet wheel 140. The clamping jaws therefore approach each other, but without the product to cut up,

When the drainage continues, the clamping jaw passes through the "cutting" position shown in FIG. 1u Position corresponds to that according to FIG. 9 with regard to the alignment of the axes of the different irgane on one Perpendicular to the X-X axis, but is in this position the acuse of the satellite gear 150 between that of the planet gear 140 and the axis D of the hub 113 and the clamping jaws cut the product *

Of course, the invention is not limited to the above embodiment, but there are numerous Modifications are possible without deviating from the basic concept of the invention. For example, the clamping jaw mating device can be replaced by any other suitable means can be replaced, for example by a simple rolling which forms an amboi and with the tangential speed of the product circulates »

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Claims (1)

-18- 15027A0 Patent claims: Rotating cutter for cutting! Y oproducts at high speeds, characterized by a kinematic device, with the help of which from the Tragneit resulting forces are significantly changeable, where the clamping jaws of the cutting device are only n:; .- cb at least zv; ei tours of the drive shaft are in cutting pitch, and after at least one rotation of the drive shaft these pass through a so-called "approach position" in which the cutting blade edge the jaw is exactly in the plane it occupies when this jaw is in the cutting position is, but only approximates the product without admitting it cut, 2. 'Rotating cutting device according to claim 1, characterized in that the kinematic device in combination comprises the following parts: a clamping jaw consisting of a horizontal swing arm with a head having a cutting blade, which is fastened with its ends on zv-ei eccentric axes, which are firmly connected to two pinions of large diameter, which form satellite wheels loosely mounted on diß crank pins of two parallel, in their rotation synchronized crank arms, the satellite wheels each meshing with a non-rotatable planetary pinion of smaller diameter, which is coaxial with the Axis of each crank arm arranged 909839/0482 are, as well as a counter-device lying opposite the clamping jaw. 3ο Schrieidevorrichtung according to claim 1 and 2, characterized in that d.ea the cutting blade describes an elongated, epicycloid spell, the apex of which at the time of cutting in the Sfahe the running plane of the product on e. ^: It is perpendicular to this plane, said vertical connecting the axes of the planet wheel, of the satellite wheel and the edge of the cutting blade with each other, 4o cutting device according to claim 1 to 3, characterized in that dal? the satellite pinions loosely on the crank pins two double crank arms or crankshafts are applied, the are synchronized in rotation and arranged parallel to each other, and there the eccentric collars firmly connected to the satellite arms surround the axes of the sutelliters. 5. Cutting device according to claim 4, characterized by two vertical, parallel side-by-side Ge ^ iuce, of the ^ n one the drive elements and the other the ü-itiv-cii urgaje of the cutting device, from rl ie crankshafts and aie liinematiscn-j Planetary wheel and satellite wheel device tr. ^ T _t v / uuüi the crankshafts are connected by means of a detachable coupling to output shafts that protrude beyond the first housing -2ο-909839/0482 -20- 15027AQ 6o cutting device according to claim 4 and 5, characterized characterized in that the planetary pinions are rigidly mounted on axles that are fixed to one of the flanges of the kinematic Device supporting housing are connected, the'axles each coaxially enforce an organ that protrudes from the side Part comprises into which the crank pin of the corresponding crank arm extending in the opposite flange protrudes. 7. Cutting device according to claim 4 to 6, characterized in that that the satellite pinions are each firmly connected to a coaxially extending hub to the crank pin, and that the circumference of the hub is adjusted eccentrically with respect to the axis of the crank pin. 8. Cutting device according to claim 4 to 7 »characterized in that the ends of the crank pins of the crankshafts interconnecting swing arm rotatably around the hub and are mounted coaxially with respect to their circumference. 9. Cutting device according to claim 4 to 8, characterized in that that a housing encloses the planetary and satellite pinion and includes a side opening through which the labe of the satellite pinion extends. 10. Cutting device according to claim 1 to 9, characterized in that the ratio between the planetary and the BATH 9098 3 9/0482 - 15Q274G -dl ** Satellite pinions are 1/2 to 1/5 and preferably 1/3 « 11. Cutting device according to claim 1 to 1ü, characterized in that the daö the second jaw of the cutting device forming counter-device corresponds to the device of the first clamping jaw * 12 · Cutting device according to claims 1 to 1U _9, characterized in that the counter device · consists of a ViFaIze which rotates at the tangential speed of the product to be cut ο 909839/0482