DE102005062739B3 - Sawing fixture, has electromagnetic drive exhibiting stator for generating electromagnetic field, where ring circular saw blade is formed as rotor that is displaceable in rotary motion by electromagnetic field of stator - Google Patents

Abstract

The fixture has an electromagnetic drive for driving a ring circular saw blade (1), where the electromagnetic drive exhibits a stator (2) for generating an electromagnetic field. The ring circular saw blade is formed as a rotor that is displaceable in rotary motion by the electromagnetic field of the stator. The electromagnetic drive is formed as an asynchronous drive and/or as three-phase linear drive or as reluctance drive.

Description

The The invention relates to a sawing device according to the Oberbe handle of claim 1 and a circular saw blade for use with such a sawing device according to claim 31st

It are known from the prior art circular circular saws, which instead of a discoid saw blade conventional boaters a ring-shaped sawblade exhibit. The circular saw blades such Ring saws i.a. by one on the circumference of the circular circular saw blade attacking drive in rotational movement, i. the drive is waveless. this makes possible great cutting depths, there to be sawn sawing material due to the non-existent wave also in height of the central axis of the circular saw blade through the circular circle saw blade passed can be.

There are various variants of a drive for driving a circular saw blade known. For example, this describes AT 213 042 a transmission with a drive pulley having structures that engage from the outside in the gaps between the teeth of the circular saw blade. As a result, the rotational movement of the drive pulley is transmitted like a gear on the circular circular saw blade. The drive pulley itself is driven by an electric motor.

A chain drive for driving a circular saw blade describes the AT 316 848 , The circular saw blade is driven along its outer periphery by a link chain whose members engage between the teeth of the circular saw blade.

Furthermore, from the document US 3,221,783 a sawing device is known, the circular saw blade is driven by a friction roller device. This friction roller device is arranged in sections along the circumference of the circular saw blade.

Indeed condition the previously known drives for a circular saw blade, that this are made relatively thick compared to other types of saws needs to face the attacking drive mechanism to be stable. This results comparatively wide cutting lines and rougher cutting edges.

The problem to be solved by the present invention is the drive of a circular saw blade to simplify and the cut quality to improve.

This Problem is caused by a sawing device with the features according to claim 1 and a circular saw blade with the features according to claim 31 solved. Preferred and advantageous embodiments of the invention are in the dependent claims specified.

After that becomes a sawing device to disposal provided, which has at least one circular saw blade. The circular saw blade is powered by an electromagnetic drive that drives a stator for generating an electromagnetic field and a rotor which is displaceable by the electromagnetic field of the stator in rotary motion is. The circular saw blade itself forms the rotor of the electromagnetic drive.

Of the Stator is a fixed part of the drive, which generates an electromagnetic field acting on the circular saw blade and exerts on it a torque, making it in rotary motion is offset. The stator generally consists of several electromagnetic components, which are arranged around the rotor of the drive around.

in the Case of the sawing device according to the invention could For example, along the electromagnetic components of the stator the outer circumference of the circular saw blade be arranged. It would the arrangement of the electromagnetic components of the stator then done so that the cutting area of the circular saw blade remains free. Another possibility for the arrangement of the stator components, these along the inner circumference of the circular saw blade to order, d. H. inside the circular saw blade. Again, the Arrangement then be made so that in the intersection of the circular ring saw blade no stator components are arranged, so the sawing process is not is hampered.

The the ring of the drive forming annular circular saw blade is formed so that it interacts with the electromagnetic field of the stator can. You can do this For example, magnetic materials with the circular saw blade be connected or integrated into this.

The Ring circular saw blade may further be formed of a conductive material or a conductive one Have material, so that a current in the ring circular saw blade from the outside is inducible. The magnetic field created by this induction interacts with the electromagnetic field of the stator, creating a torque on the circular saw blade exercised becomes.

In general, many embodiments are possible for an electromagnetic drive, which is based on the stator-rotor principle, which are known per se and therefore not at this point in Off should be considered.

Basically it is possible the electromagnetic drive both as a synchronous drive and form as an asynchronous drive. In a synchronous execution would like already mentioned above, the circular saw blade have magnetic or magnetizable materials or with be connected to such materials, so that from the stator of the electromagnetic Drive a torque applied to the circular saw blade can.

Of the electromagnetic drive, in which the circular saw blade itself forms the rotor, offers over those from the state of the art known drive variants have the advantage that the drive substantially contactless he follows. As a result, the ring circular saw blade can be made narrow because no gear parts mechanically attack him to get it moving to move.

It is about it In addition, not required, the geometry of the cutting edge, d. H. of the Saw teeth of the circular saw blade, a transmission, such as a drive chain to adapt. Therefore, can the geometry of the saw teeth with regard to optimized for cut edge quality be without any consideration must be taken on the design of the transmission. Consequently allows the present invention a narrow cutting line high quality cut.

The Saw device according to the invention has a further advantage: The sawing material to be sawed can be at the height of the central axis of the circular saw blade guided by this be, d. H. along a radius of the circular saw blade.

The Peripheral speed of the saw blade The cutting edge is thus oriented perpendicular to the feed direction of the sawed material. When performing horizontally of the sawmill through the circular saw transmits the circular saw blade at the cutting edge thus an almost vertically downward force on the sawmill. This means that when sawing generated material splitter (splitter) substantially downwards be accelerated and thus no danger to the operator of the saw or others nearby the saw represent persons present.

at a conventional one circular saw must the sawmill in the outer area of the circular saw blade this passed become. Here owns the saw blade a big horizontal velocity component, allowing splinters in a horizontal direction can be thrown away (Non-return). This represents a big one danger for an operator of the saw or one possibly near the saw other person.

By discarded sawdust can become serious accidents happen; in particular in that splitter between the saw blade and another part of the circular saw or between two saw blades and then accelerated with the horizontal peripheral speed of the saw blade towards a nearby the saw Person to be hurled. This is done with the present sawing device avoided.

It It should be noted that a main field of application of the sawing device according to the invention the woodworking is. However, the use of the sawing device not on the Zusägen limited by wood materials. The saw can also be used for sawing other materials, such as metal, be formed.

The Lack of a mechanical drive device also allows that the circular saw blades of the sawing can be exchanged in a simple and fast way. This is made possible in particular by that no transmission elements are present, with the ring circular saw blade are connected and when changing the ring circular saw blade first must be removed.

It is also within the scope of the invention that the sawing device has a plurality of circular saw blades. It can be provided that each ring circular saw blade an individual stator is assigned. However, it is also possible that several circular sawblades one own common stator and driven by the field together become.

It is also possible that the sawing device according to the invention additionally has conventional saw blades in addition to electromagnetically driven annular circular saw blades, So hybrid is designed.

The Absence of transmission elements in the sawing device according to the present invention Invention that - like known from the prior art - such as peripherally or laterally on the circular saw blade are arranged, allows that two adjacent ring saw blades with be aligned with each other at a small lateral distance can. Hereby are minimum distances of a few millimeters between adjacent saw blades possible. With the sawing device according to the invention are thus very close to each other cutting lines produced, for example Production of strips or thin Boards.

In the preferred asynchronous variant of the electromagnetic drive, the circular saw blade is, as mentioned above, designed such that a current can be induced therein. As drive variant In addition, a three-phase linear drive comes into consideration. In this embodiment, the circular saw blade represents the anchor of the drive. Additional variants are traveling wave or eddy current drives.

A Another preferred variant of the electromagnetic drive, that this as reluctance, in particular as a switched Reluctance drive, is formed. In a reluctance drive is it is a particularly simple embodiment of an electromagnetic Drive.

Of the Rotor of a reluctance drive consists only of a magnetizable or magnetic material, in particular iron. Such a Rotor depends in the electro-magnetic field of the stator in certain Way out. The arranged around the rotor of the drive components of the Stators are activated one after another, with the rotor at realigns each activation and eventually goes into a rotational movement.

For example can be formed from iron or a ferrous material Ring circular saw blade form the rotor of a reluctance drive. It may also be enough if the circular saw blade having iron-containing segments and not continuously from a ferrous Material exists.

alternative can be provided that the circular circular saw blade, for example, along Its inner circumference is ferrous or other magnetic Material, such as by a coating or by a along the inner circumference arranged ring.

Of Further, the ring circular saw blade can be regular or irregularly arranged Have recesses that are made with a non-magnetic material are shed, for example, with a plastic. This increases the effect of the reluctance motor, since the magnetic flux in the circular saw blade a "detour" around the non-magnetic Must do areas.

moreover would be too a composite version of the circular saw blade possible, in the case of a basic body of the circular saw blade made of plastic or a fiber-reinforced plastic. In this body are magnetic or magnetizable zones (coils, anchor plates, etc.).

It It should be noted that several drive variants also in Combination can be used. Indicates the sawing device several circular saw blades on, can ver different saw blades of sawing be driven with different drive variants.

It is furthermore advantageous if the sawing device according to the invention Has at least one support member through which the circular circular saw blade held rotatable about its central axis and guided laterally. Such a support member may for example be arranged so that the circular saw blade held on its inner edge and guided.

advantageously, In this case, the support member to an element that has a magnetic or electromagnetic support and lateral guidance of the circular saw blade enable. Such an element may, for example, permanent magnets or Electromagnets include and connected to the support member or be integrated into this.

Additionally or Alternatively, the support member also for air storage of a Ring circular saw blade be educated.

A safe and precise lateral guidance of the saw blade is ensured by that the support member saddle-shaped or U-shaped is. Here, the inner edge of the circular saw blade is through the saddle area held by the support member and by the side surfaces of the saddle-shaped holding member guided sideways.

A Particularly preferred embodiment sees at least two a ring circular saw blade associated holding elements before, each additionally an Have means for generating an electromagnetic field. Together, these support elements form the stator of the electromagnetic Form drive. This is a particularly compact design the electromagnetic drive possible.

Of Furthermore, a particularly efficient power transmission from the stator elements, which either connected to support elements or integrated into this are on the circular saw blade allows. Means for generating the electromagnetic field may e.g. Permanent magnets or electromagnets. The support elements a circular saw blade are advantageously arranged opposite each other, which a usual one Arrangement of stator elements of an electromagnetic drive equivalent.

The arranged in the support elements means for generating the electromagnetic field can also be designed to be used as inductors, in particular a three-phase linear motor Act.

Of Further, the sawing device according to the invention advantageously at least one blade arm for receiving support elements, the circular circle saw blade engages and is connected to the at least one support member. At least one leaf arm is preferably designed as a half cylinder. Retaining elements are in this embodiment on the curved outer side of the semi-cylindrical blade arm connected thereto. A leaf arm thus forms together with the support members a mounting device for the Ring circular saw blade. Preferably, the leaf arm itself is vertically displaceable over a column guide held.

It can be provided with advantage at least two leaf arms, which are spaced to each other the ring circular saw blade succeed. The leaf arms are still preferred over the Column guide held, that they are vertically displaceable both against each other and with each other are. It can in particular by the joint movement of the Blattar me be achieved that a sawing material always to be sawed in the amount of the central axis of the circular saw blade guided by this can be, independent for example, on the thickness of Sägeguts.

By the possibility, the leaf arms also independent move one another, a simple change of the circular saw blades is possible; for example, by having one leaf arm on another leaf arm is shifted to, whereby the distance of the blade arms is reduced and the circular saw blade can be easily removed from the support elements.

Of Furthermore, at least one holding element is displaceable with a Connected leaf arm, so that, for example, in several existing support elements these are aligned against each other or shifted together can be around the position of the circular saw blade and thus to change the cutting line.

preferably, the displacement of the support elements via an additional Adjusting device, in turn, via a control device can be designed controllable. In addition, sensors may be provided which control the position of the support elements and a signal deliver to the controller. This is an exact alignment the support elements possible. This allows, in particular, two retaining elements holding a circular circular saw blade align exactly with each other, for example, exactly opposite.

advantageously, over such a control device at the same time also a driving the column guide, so that both the position of the support members and the position the leaf arms over the control device is adjustable.

Especially Preferably, the leaf arms are arranged so that a sawing material height of Central axis of the circular saw blade be guided by this can. This is z. B. achieved by two by the circular circular saw blade guided Leaf arms appropriately spaced from each other the ring circular saw blade succeed. The performing of the sawmill at height the central axis of the circular saw blade offers the already mentioned above Advantage, that of the ring circular saw blade transferred to the sawing material Force component substantially perpendicular to the sawed material, d. H. at the horizontal Respectively of the sawmill essentially in the vertical direction, acts. This z. For example, when sawing resulting splits essentially accelerated vertically downwards.

Farther has the sawing device preferably a conveyor on, who saw the saw sawing through the ring circular saw blade leads. This is a transport mechanism known per se, for example a Conveyor belt, which will not be discussed in detail at this point.

Of Further is the sawing device Advantageously equipped with a pressure device, the the one to be sawn sawing material on the conveyor suppressed.

In A second aspect of the present invention is a ring-saw blade for use with the sawing device provided. The circular saw blade is characterized by the fact that it is due to the electromagnetic Field of a stator of the sawing device is displaceable in rotary motion. Advantageously, it has this magnetic or magnetizable structures.

According to one particularly preferred embodiment of the circular circular saw blade has this non-magnetic and / or non-magnetizable areas on. This improves the coupling to the electromagnetic field of the stator, since the magnetic flux in the circular saw blade runs around the non-magnetic areas and thus the ring circular saw blade uniformly interspersed.

The Invention will be described below with reference to exemplary embodiments with reference to the figures described in more detail. Show it:

1 a perspective view of an embodiment of the sawing device,

2 a perspective view of an Ab conversion of the sawing device,

3 a sectional view of the sawing device according to the 2 .

4 a sectional view of a detail of an embodiment of the sawing device according to the invention,

5 the perspective view of a detail of an embodiment of the sawing device,

6a a perspective view of a further modification of the sawing device,

6b the sawing device of 6a with opened housing,

7a - 7d further views of the sawing the 6a and 6b .

8a - 8d Steps when changing a circular saw blade.

The 1 shows a sawing device 10 with two adjacent ring circular saw blades 1 (see also 5 ). As support elements for the ring circular saw blades 1 are drive saddles 2 present in which the circular saw blades 1 are stored. Through the parallel to the outer surfaces of the circular saw blades 1 trained side surfaces 24 the drive calipers 2 become the circular saw blades 1 guided sideways.

The drive saddles 2 at the same time set the stator of the electromagnetic drive to drive the circular saw blades 1 dar. The drive calipers 2 have for this purpose to generate an electromagnetic field integrated electromagnetic elements 25 on. These elements may be, for example, permanent magnets or current-carrying coils.

The circular saw blades 1 are designed to be characterized by that of the drive calipers 2 generated electromagnetic field can be set in rotary motion; ie act as a rotor of the electromagnetic drive. The drive saddles 2 as well as the ring circular saw blades 1 Together they form the main components of the electromagnetic drive, over which the circular saw blades 1 the sawing device 10 be set in rotary motion.

The drive saddles 2 in turn are with an upper or lower leaf arm 5a . 5b connected to the two circular saw blades 1 succeed. The drive saddles 2 are movable on the leaf arms 5a . 5b arranged. For this purpose, a connecting portion (not shown) of a drive caliper protrudes 2 in one along the longitudinal axis of a blade arm 5a . 5b extending longitudinal groove 51 ,

The connecting portion of the drive calipers 2 is inside a leaf arm 5a . 5b with a component (not shown) of an adjusting device 4 connected. With the help of the adjustment 4 may be a shifting of the drive calipers 2 along the longitudinal axis of the leaf arms 5a . 5b respectively. The adjusting device 4 is in the detail in the 3 and will be described in more detail below.

The leaf arms 5a . 5b be from a column guide 6 held. Here are the leaf arms 5a . 5b movable with the column guide 6 connected so that the vertical position of the leaf arms 5a . 5b by means of the column guide 6 is adjustable. The two leaf arms can do this 5a . 5b the sawing device 10 be moved both together and independently.

Furthermore, the sawing device 10 in the embodiment of 1 one in the ring circular saw blades 1 and the leaf arms 5a . 5b surrounding frame 7 on. The frame 7 has vertical struts 71 , which serve to receive a protective cover (not shown). A protective cover serves to at least partially close the cutting area of the circular circular saw in order to retain sawing waste and splinters produced during sawing. An embodiment of a sawing device with protective cover is in the 7a and 7c shown.

The frame 7 also has bearing surfaces 72 on top of which a board to be sawn 3 put on and through the circular circle saw blade 2 the sawing device 10 can be performed.

The leaf arms 5a . 5b the sawing device 10 are so within the inner circumference of the circular saw blade 2 arranged so that their plane side surfaces face each other. The leaf arms 5a . 5b are arranged with such a distance to each other that the board 3 between the two leaf arms 5a . 5b can be passed.

Furthermore, the height of the two leaf arms 5a . 5b over the column guide 6 adjusted so that the board 3 at the level of the central axis of a circular saw blade 1 is passed through this. This will take place when sawing the board 3 the saw teeth 11 of the circular saw blade 1 almost perpendicular to the board 3 on, which are thrown during sawing possibly generated splitter vertically vertically downwards. As a result, the risk of injury is significantly reduced by thrown away splitter.

The in the 2 Sawing device shown substantially corresponds to the embodiment according to the 1 , The sawing device 10 unlike 1 but no frame on. Two adjacent circular circular saw blades 1 are again via drive calipers 2 stored and guided, the drive saddles 2 slidable with an upper or lower leaf arm 5a . 5b are connected. It can be seen that the drive calipers 2 connecting sections 21 have, in the longitudinal grooves 51 the leaf arms 5a . 5b intervention.

A detailed view of the adjustment 4 for adjusting the drive saddles 2 according to the 1 and 2 show the 3 , From this sectional view, it is apparent that both the upper and the lower blade arm 5a . 5b is designed as a hollow element. Inside the leaf arms 5a . 5b run in the longitudinal direction of the leaf arms 5a . 5b guide rods 41 the adjustment 4 ,

connecting sections 21 the drive calipers 2 protrude through longitudinal grooves 51 the leaf arms 5a . 5b into the interior of the leaf arms 5a . 5b into it and are there with the guide rods 41 the adjustment 4 connected. For this purpose, the connecting sections 21 drilling 22 on, through which the guide rods 41 guided and with the connecting sections 21 are connected. The guide rods 41 represent components of a spindle drive, with which a rotational movement can be converted into a linear movement. The guide rods 41 are with servomotors 42 coupled. By activating the servomotors 42 can the guide rods 41 be rotated, reducing the position of the drive saddles connected to you 2 in the longitudinal direction of the leaf arms 5a . 5b is adjustable.

In the embodiment of 3 is every drive saddle 2 exactly one guide rod 41 assigned, so that the positions of the drive calipers 2 and thus the ring circular saw blades assigned to them 1 can be adjusted individually.

It but it is also possible that, for example, several drive saddles one behind the other on a guide rod are arranged so that they can only be moved together. This can be sufficient if only the position of the circular saw blade be changed in relation to a saw good should, the desired Cutting width, i. the distance between two adjacent cutting lines, however should remain constant.

Furthermore, the 3 be taken that the column guide 6 from vertically arranged support rods 61 which passes through at the leaf arms 5a . 5b arranged connecting flanges 52 are guided. This arrangement made light a vertical displacement of the leaf arms 5a . 5b so that the cutting position is adjustable with respect to a sawing material to be sawn.

The 4 shows a detail of an embodiment of the sawing device in a side sectional view. On a leaf arm 5 are two circular sawblades 1a . 1b arranged. The circular saw blade 1b is in a holder 2 is held rotatable about its central axis and passes through the side surfaces 2a of the drive saddle 2 guided laterally to ensure an exact cutting edge. That too in the 4 Circular circular saw blade shown 1a is also held in a drive saddle, which is not visible in this illustration.

The drive saddle 2 has a connection area 21 on, in a longitudinal groove 51 of the leaf arm 5 engages and inside the leaf arm 5 with a guide rod 41 an adjustment 4 connected is. By turning the threaded rod 41 can change the position of the drive caliper 2 and thus the position of the circular saw blade 1b to be changed. This is the drive saddle 2 along the longitudinal groove 51 postponed.

The guide rod 41 passes through the connecting section 21 of the drive saddle 2 through a hole 22 , To the longitudinal adjustment of the drive caliper 2 to reach is the threaded rod 41 executed spindle-like. For example, it has an external thread inside of the bore 22 of the drive saddle 2 arranged structures engages. This will cause a rotational movement of the guide rod 41 in a longitudinal adjustment of the drive caliper 2 implemented. A rotary drive of the threaded rod 41 can be realized by a servomotor.

A perspective detail view of two circular saw blades 1a . 1b show the 5 , The circular saw blades 1a . 1b are here in drive calipers 2a . 2 B held. Here are the drive saddles 2a . 2 B for adjusting the circular saw blades 1a . 1b slidable on a blade arm 5 arranged. For this purpose, a connecting portion (not shown) of the drive calipers engages 2a . 2 B in a longitudinal groove 51 of the leaf arm 5 one.

One recognizes further in 5 in that very small blade clearances can be realized with the sawing device according to the invention. The minimum possible distance is essentially the width of the drive calipers 2a . 2 B limited. The width of the drive saddles 2a . 2 B However, it is significantly less than the width dimension of conventional drive devices for driving a circular saw blade. Therefore, with the sawing device according to the invention narrow Sägeprodukte be produced, such as thin boards or strips.

A development of the sawing device show the 6a and 6b , Here is the Sägevorrich tung 10 from a housing 8th surround. The housing 8th has a lower panel 82 on, which surrounds the lower portion of the sawing device. Furthermore, the housing includes 8th a hinged protective cover 81 covering the top of the sawing device 10 covers.

The inside of the case 8th arranged elements of the sawing device 10 correspond substantially to an embodiment of the sawing device according to the 1 , The protective cover 81 points in the area of the ring circular saw blades 1 a viewing window 83 through which the sawing process can be observed. Furthermore, the protective hood has 81 at its lateral ends openings 84 . 85 , for introducing ei nes Sägegutes (not shown) in the sawing device or for leading out the Sägeguts from the sawing device 10 serve. In addition, on the protective hood 81 a handle 86 attached, with the help of the protective hood 81 can be opened.

The sawing device 10 of the 6a with open protective cover 81 show the 6b , It can be seen that the protective cover 81 in the closed state of Holmen 71 is supported. It is also applied to the embodiment of 1 referenced, which also has spars, which are connected to a frame surrounding the saw.

Further views of the execution of the sawing device according to the 6a and 6b show the 7a to 7d , In these figures, unlike in the illustrations 6a and 6b in addition a board 3 shown in the sawing device 10 is introduced.

The board 3 is here on before or behind the circular circular saw blade 1 attached bearing surfaces 9a . 9b put on and on this by the circular circle saw blade 1 pushed. In this case, it is also possible in particular for the bearing surfaces 9a . 9b are each designed as transport devices, for example as a revolving conveyor belt. This would mean advancing the board 3 in the sawing device 10 facilitated. At the same time, the board would 3 with an adjustable and constant speed through the circular saw blade 1 led, whereby the quality of the cutting edge would be improved.

The 7b and 7d show partial views of the sawing device 10 , with protective cover removed. In 7b It can be seen that two ring circular saw blades 1a . 1b are arranged closely adjacent. Due to the small distance between the circular saw blades 1a . 1b to each other also closely adjacent cut lines 31a . 31b ,

The 7c shows the sawing of the 7a with closed protective cover 81 , A board to be sawn 3 is over a receiving opening 84 placed in a side surface of the protective cover 81 is introduced into the sawing device 10 introduced. To remove or remove the sawing products is on the receiving opening 84 opposite side of the protective cover 81 an outlet opening 85 arranged. The sawing process can be done via the viewing window 83 centrally in the area of the circular saw blade in the protective cover 81 integrated, controlled.

The 8a to 8d show four steps in a change of a circular saw blade of the sawing device according to the invention. In this case, the configuration corresponds to the illustrated sawing device 10 the Indian 2 shown embodiment, so that the individual elements of the sawing device 10 will not be discussed again.

To change the ring circular saw blade 1 will, as in 8b shown, the lower leaf arm 5b the sawing device 10 about the column adjustment 6 moved upwards and thereby the upper leaf arm 5a approximated. This will be a lower drive saddle 2 in which a lower portion of the circular saw blade was guided, from the ring circular saw blade 1 led away, creating a lower portion of the circular saw blade 1 is released.

The circular saw blade 1 can now by the small distance between the two leaf arms 5a . 5b to each other also from the upper drive saddle 2 removed and in a simple way from the leaf arms 5a . 5b be taken down. The attachment of a new circular saw blade is done in the reverse order.

1, 1a, 1b

Ring circular saw blade

10

sawing

11

Side surface of a Ring circular saw blade

2, 2a, 2b

drive saddle

24

Side surface of a drive saddle

21

connecting portion

22

drilling

24

side surface

25

electromagnetic element

3

board

4

adjustment

41

guide rod

42

servomotor

5, 5a, 5b

pitch arm

51

longitudinal groove

52

connecting flange

6

column guide

61

supporting rod

7

frame

71

Holm

72

bearing surface

8th

casing

81

protective cover

82

paneling

83

window

84

receiving opening

85

outlet opening

86

Handle

9a 9b

bearing surface

Claims (35)

Sawing device comprising at least one circular saw blade and an electromagnetic drive for driving the at least one circular saw blade having at least one stator for generating an electromagnetic field, characterized in that the at least one annular circular saw blade ( 1 . 1a . 1b ) is formed as a rotor, by the electromagnetic field of the stator ( 2 . 2a . 2 B ) is displaceable in rotary motion. sawing according to claim 1, characterized in that the electromagnetic Drive as an asynchronous drive and / or as a three-phase linear drive is trained. sawing according to one of the claims 1 or 2, characterized in that the electromagnetic drive is designed as a traveling wave or eddy current drive. sawing according to one of the preceding claims, characterized that the electromagnetic drive is designed as a reluctance drive is. Sawing device according to one of the preceding claims, characterized by at least one holding element ( 2 . 2a . 2 B ) for the rotatable mounting of the at least one annular circular saw blade ( 1 . 1a . 1b ) about its central axis and to its lateral guidance. Sawing device according to claim 5, characterized by at least two circular ring saw blade ( 1 . 1a . 1b ) associated support elements ( 2 . 2a . 2 B ), each one ( 25 ) for generating an electromagnetic field and together form the stator of the electromagnetic drive. Sawing device according to claim 6, characterized in that the means ( 25 ) comprise a permanent magnet or an electromagnet for generating an electromagnetic field Sawing device according to one of claims 6 or 7, characterized in that the support elements ( 2 . 2a . 2 B ) each of a circular circular saw blade ( 1 . 1a . 1b ) are arranged opposite one another. Sawing device according to one of claims 5 to 8, characterized in that at least one support element ( 2 . 2a . 2 B ) an element for magnetic or electromagnetic support and lateral guidance of the at least one circular saw blade (US Pat. 1 . 1a . 1b ) having. Sawing device according to one of claims 5 to 9, characterized in that at least one support element ( 2 . 2a . 2 B ) means for air storage and guidance of the at least one circular saw blade ( 1 . 1a . 1b ) having. Sawing device according to one of claims 5 to 10, characterized in that at least one support element ( 2 . 2a . 2 B ) is formed saddle-shaped or U-shaped. Sawing device according to one of claims 5 to 11, characterized by at least one blade arm ( 5 . 5a . 5b ) for receiving support elements, which holds the at least one circular circular saw blade ( 1 . 1a . 1b ) and with the at least one support element ( 2 . 2a . 2 B ) connected is. Sawing device according to claim 12, characterized in that at least one leaf arm ( 5 . 5a . 5b ) is formed as a half-cylinder and at least one holding element ( 2 . 2a . 2 B ) is connected to it on its curved outer side. Sawing device according to one of claims 12 or 13, characterized by two leaf arms ( 5 . 5a . 5b ) spaced apart from each other the ring circular saw blade (FIG. 1 . 1a . 1b ). Sawing device according to one of claims 12 to 14, characterized in that at least one support element ( 2 . 2a . 2 B ) parallel to the central axis of the circular ring saw blade ( 1 . 1a . 1b ) displaceable with a blade arm ( 5 . 5a . 5b ) connected is. Sawing device according to one of claims 4 to 15, characterized by an adjusting device for displacing at least one holding element ( 2 . 2a . 2 B ). Sawing device according to one of claims 14 to 16, characterized in that the leaf arms ( 5 . 5a . 5b ) via a column guide ( 6 ) are held vertically against each other and to each other displaceable. Sawing device according to one of claims 16 or 17, characterized by a control device for controlling the column guide ( 6 ) and / or the adjusting device ( 4 ) to move the support elements. Sawing device according to one of claims 14 to 18, characterized in that the leaf arms ( 5 . 5a . 5b ) are arranged so that a sawing material ( 3 ) at the level of the central axis of the circular circular saw blade ( 1 . 1a . 1b ) can be guided by this. Sawing device according to one of the preceding claims, characterized in that a sawing material ( 3 ) at the level of the central axis of the circular circular saw blade ( 1 . 1a . 1b ) can be guided by this. sawing according to one of the preceding claims, characterized that this is undulating. Sawing device according to one of the preceding claims, characterized by at least one conveying device for advancing a sawing material ( 3 ) during the sawing process. Sawing device according to claim 22, characterized in that the conveying device through the inner circumference of at least one annular circular saw blade ( 1 . 1a . 1b ) is guided. Sawing device according to one of claims 22 or 23, characterized by at least one pressing device for pressing the sawing material ( 3 ) to the conveyor. Sawing device according to one of claims 22 to 24, characterized by at least one catch by the inner order of at least one ring circular saw blade ( 1 . 1a . 1b ) guided recording device for receiving at least one conveyor and / or a pressure device. Sawing device according to claim 12, characterized in that at least one conveyor device for advancing a Sägeguts ( 3 ) during the sawing process and / or at least one pressure device on a blade arm ( 5 . 5a . 5b ) is arranged or integrated in this. Sawing device according to claim 12, characterized in that at least one conveyor device for advancing a Sägeguts ( 3 ) during the sawing process, wherein the conveyor through the inner circumference of at least one circular saw blade ( 1 . 1a . 1b ), and / or at least one pressure device on a blade arm ( 5 . 5a . 5b ) is arranged or integrated in this. Sawing device according to claim 12, characterized in that at least one conveyor device for advancing a Sägeguts ( 3 ) during the sawing process and / or at least one pressure device for pressing on the sawing material ( 3 ) to the conveyor on a blade arm ( 5 . 5a . 5b ) is arranged or integrated in this. Sawing device according to claim 12, characterized in that at least one conveyor device for advancing a Sägeguts ( 3 ) during the sawing process, wherein the conveyor through the inner circumference of at least one circular saw blade ( 1 . 1a . 1b ) is guided, and / or at least one pressure device for pressing the Sägeguts ( 3 ) to the conveyor on a blade arm ( 5 . 5a . 5b ) is arranged or integrated in this. Sawing device according to claim 12, characterized by at least one through the inner periphery of at least one annular circular saw blade ( 1 . 1a . 1b ) guided receiving device for receiving at least one conveyor and / or a pressure device, wherein at least one conveyor and / or at least one pressure device on a blade arm ( 5 . 5a . 5b ) is arranged or integrated in this. Ring circular saw blade for use with a sawing device according to one of the preceding claims, which has structures over it by the electromagnetic field of a stator of the sawing device is displaceable in rotary motion. Ring circular saw blade according to claim 31, characterized by magnetic or magnetizable Structures. Ring circular saw blade according to one of the claims 31 or 32, characterized by non-magnetic and / or not magnetizable structures. Ring circular saw blade according to one of the claims 31 to 33, characterized by a formed of a plastic Body. Ring circular saw blade according to claim 34, characterized in that the basic body magnetic or magnetizable areas.