DE102017123662A1 - Separator blade for material-removing processing - Google Patents

Abstract

Separating blade for the material-removing machining of a mineral-containing material, comprising at least one to a central blade axis radially outwardly processing member for material removal of the material, wherein the separator sheet is adapted to be set with a drivable flange in rotation, and wherein the release blade for a machining operation Coolant is supplied. The separator sheet is characterized in that the separator sheet has a single master sheet and two outer sheets, wherein the master sheet is present in the axial direction of the separator sheet between the two outer sheets, wherein the processing member is arranged only on the master sheet.

Description

State of the art

Dividing sheets such as saw blades or joint cutting disks for, in particular, separating machining of materials such as concrete, asphalt or stone are known, as are corresponding machine tools, for example mobile floor cutters, to which a dividing sheet can be arranged. The separator sheet is driven by means of an attacking flange assembly of the machine tool spinning fast.

For example, in road or airport construction, the material of the traffic areas is edited or cut with joint cutters in order to get to areas below the traffic area, for example, to lay cables underground. The mechanical and thermal stresses occurring on the separating blade, in particular in the case of an uneven processing surface and the resulting tilting of the separating blade, are comparatively strong in continuous operation.

The technical and economic requirements of the separator sheets and associated tools are becoming increasingly complex in practice. So far, it is not possible to find a practical solution or a solution that meets all requirements for all applications.

Objects and advantages of the invention

Object of the present invention is to provide a release sheet of the aforementioned type, which is technically and economically advantageous for a variety of machining tasks for material-removing processing of mineral-containing hard materials used. In particular, a joint cutting separator blade or a saw blade for construction machinery for large construction site use, in particular for opening installation channels for cables, pipes or the like should be provided.

This object is solved by the independent claim.

The dependent claims relate to advantageous variants of the invention.

The invention is based on a separating blade for the material-removing machining of a mineral-containing material, wherein the separating blade comprises at least one to a central separating blade axis radially outward processing member for material removal of the material, wherein the separating blade is adapted to be set with a drivable flange in rotation , and wherein the separating blade for a machining operation, a coolant is supplied.

The flange assembly is connectable to the disk-shaped separator sheet in the region around the separator blade axis, in particular comprising a flange portion on both sides of the separator sheet, in particular on both sides of the separator sheet being joined by clamping or screwing means. The processing element comprises, for example, hard materials, preferably a diamond material and / or an ultra-hard metal.

Hereinafter, the terms "axial" and "radial" refer to the blade axis.

The essential aspect of the invention is now to be seen in the fact that the separator sheet has a single master sheet and in particular exactly two outer sheets, the master sheet being present in the axial direction of the separating sheet between the two outer sheets and wherein the processing member only, especially exclusively, on the master sheet is arranged.

In addition, it is advantageous that an inner structure is present in an inner volume of the separating sheet enclosed by parts of the separating sheet, the inner structure providing a coolant flow-through flow path between an inlet point of the coolant supply separating blade and an outlet point of the separating sheet for a Outlet of the coolant is formed, wherein the outlet point is present in the region of an outer periphery of the release sheet. The inner structure is present, for example, as a cavity of the inner volume.

Only the master blade has a processing element, but the outer leaves are not. Thus, the release sheet can be provided economically, in particular cost and technically advantageous. Preferably, the release sheet according to the invention is constructed in multi-layer construction. In particular, the master blade and the outer leaves are aligned parallel to each other. For example, the master sheet and the outer leaves are detachably connected to each other firmly, for example screwed. The firmly interconnected in particular exactly three leaves are, for example, each disc-shaped with opposite flat sides available. In the axial direction, the leaves are present side by side and form a sandwich structure with the axially central master blade, which has the processing member, and the two outer leaves without processing member. On each side of the stem sheet there is accordingly an outer leaf aligned parallel to the master leaf. Between the respective outer sheet and the master sheet an axial distance is present, which is a respective Part of the hollow inner volume or the flow path forms, which can be traversed by the coolant.

Preferably, the master sheet and / or the outer sheet is formed as a full-surface, uninterrupted disk. For example, the outer sheet and / or the master sheet is formed as a continuous disk, with a particular closed, uninterrupted circular area. A circular surface of the outer leaf and / or the stem leaf advantageously comprises no passages, Aussparrungen and / or holes for in particular the coolant. The outer leaf and / or the master blade has at the circular surface mounting means for mounting the outer leaf and / or the stem blade to the flange assembly. Also, the outer sheet and / or the master sheet mounting means for mounting an outer sheet with the master sheet, so that the master sheet is fixed to the outer sheet, in particular rotationally fixed. Advantageously, the outer sheet and the master sheet are connected to each other by the mounting means such that the outer sheet is fixed in the axial direction fixedly connected to the master sheet.

By the exit of the coolant in the region of the outer circumference of the release sheet, for example in the radial direction on the outer periphery of the release sheet, the cooling of the release sheet is comparatively improved. For example, it is thereby possible to cool and / or lubricate the processing member. This also makes it possible to cool an outer side of the separating sheet with the coolant. Also, this does not provide a coolant return device on a machine tool, e.g. a joint cutter, necessary.

Hereinafter, instead of coolant, the same applies to cooling fluid.

Advantageously, at least one processing member is provided on the master sheet, in particular, several processing members are provided. The processing members are, for example, arranged evenly distributed along a circumference of the stem sheet on the master sheet. Preferably, a plurality of processing elements spaced from each other are arranged circumferentially on the master sheet.

The master sheet may also be present in two or more parts. For example, the master sheet may be made up of two parallel juxtaposed sheets, e.g. Discs exist. Advantageously, the two sheets in the arranged state as a master sheet abutting one another, or abutting each other available. This has the advantage that stability of the stem leaf is increased. The two discs of the stem sheet are, for example, firmly screwed together and / or in particular non-detachably riveted together and / or welded. Due to the multi-part of the master sheet this is relatively inexpensive to produce.

It is also conceivable that an axial distance exists between the two master blade leaves. Advantageously, an internal structure is thereby present between the master blade leaves, through which cooling liquid can flow. If the master sheet comprises two or more master blade leaves, then the processing element is fastened in particular to all master leaf leaves. Advantageously, a cutting length of the processing member extends in the axial direction from an outer side of a first master sheet to an outer side of a second master sheet, wherein the two outer sides are formed opposite each other and in particular form the outer sides of the stem.

The outer leaves of the release sheet are advantageously designed like a disk. In particular, the outer leaves are the same or symmetrical to each other. Preferably, the outer leaves have an outer diameter or an outer radius, which is equal to or smaller than an outer diameter or an outer radius of the stem sheet.

On the outer circumference of the stem blade, the processing member is arranged in particular projecting, wherein the processing member projects radially beyond an outer radius of the outer leaves. The larger radius or diameter of the stem relative to the radius of the outer leaves is preferably determined solely by the processing member. As a result, at the outer peripheral region of the release sheet, e.g. a circular or annular outlet point and / or inlet point present in the radial direction, which is advantageously interrupted exclusively by the processing member and / or by the mounting means. The coolant can thus emerge from the separator sheet in the radial direction at the outlet point out of the internal structure of the separator sheet and / or enter the internal structure of the separator sheet in the separator sheet at the inlet location.

Advantageously, the inlet site is present at a peripheral region of the release sheet. It is conceivable that, for example, there is a circular or annular outlet point and / or inlet point in the axial direction on the outer circumferential region of the separating blade, which advantageously extends continuously, without interruptions. The coolant can thus emerge from the separator sheet in the axial direction at the outlet point out of the internal structure of the separator sheet. The coolant can thus be in axial direction at the point of entry into the internal structure of the release sheet into the release sheet.

The internal volume advantageously extends between the master blade and an outer blade. In particular, therefore, there are two inner volumes, a first inner volume between the master blade and a first outer blade and a second inner volume between the blade and a second outer blade. The two inner volumes can advantageously communicate with each other. For example, For this purpose corresponding axial holes are provided on the master sheet. Advantageously, each interior volume has an inlet site and an outlet site. The two inner volumes may be the same or symmetrical to each other. In the following, only one internal volume is spoken of.

In the release sheet according to the invention, an advantageous compared to an air cooling liquid cooling with a relatively high thermal conductivity of the cooling liquid such. Used water and thus a comparatively effective heat dissipation from the release sheet is possible. For this purpose, the components of the release sheet are formed of a good thermal conductivity metal material, so that there is sufficient cooling on the relevant in practice material thicknesses of the components. An internal wetting or flushing of the flow path limiting areas or areas with cooling liquid is e.g. sufficient for a highly effective continuous cooling of the release sheet and possibly also adjacent machine parts. In addition, the cooling liquid is kept flowing through or constantly mixed, e.g. due to the centrifugal forces occurring in the processing mode, and at the same time recirculated cooler coolant. The inner structure is tuned so that the cooling liquid comes into contact with all of the areas that are relevant to the heating during operation to a sufficient extent, in particular flows past. In addition, the cooling capacity of the cooling liquid can also be increased or influenced by the fact that the volume flow is changed or increased and / or the inlet temperature of the cooling liquid is lowered into the internal volume. In addition, the cooling liquid is conveyed through, in particular, a conveying arrangement on the machine tool, such as a pumping device, for supplying the cooling liquid through the internal volume.

The inner structure is preferably selected such that in a structurally simple manner, a comparatively large inner surface adjoins or borders the flow path. This overall high heat dissipation is achieved by the wetted by the coolant inner surface of the release sheet. The inner surface is in particular very good heat-conducting with the region of the processing member in heat-conducting connection. The heat-conducting connection of the processing member with the master blade is advantageously a metal material which has a high thermal conductivity. Thus, for example, a comparatively strong heat dissipation is achieved by the processing member to the inner surfaces of the inner structure along the flow path. The inner structure is formed, for example, in particular exclusively by the master sheet, the outer sheet, the Flanschanordung and / or the mounting means.

The release sheet according to the invention is advantageous for applications in which the material to be cut or the bottom surface, when processing ground or traffic surfaces, has a thickness to e.g. Has over 20 centimeters and / or larger distances of many hundred meters at a time or in continuous operation must be processed or covered. The release sheet according to the invention preferably has a corresponding larger release blade diameter of about 300 millimeters, in particular over 400 millimeters, in particular over 600 millimeters, in particular over 800 millimeters, in particular up to over 1000 millimeters. In addition, the separating blade is preferably designed to transmit a comparatively strong drive power to the separating blade in order to drive the separating blade uniformly with rotational speeds of up to more than 2500 revolutions per minute in continuous working operation. Thus, the release sheet according to the invention for comparatively large processing depths in continuous operation can be used advantageously. The separator sheet is particularly practical in civil engineering, on large construction sites or in outdoor areas and for comparatively long processing lines used. The separator sheet according to the invention is preferably designed for use on driven mobile construction machines such as floor cutters for road construction.

It proves to be advantageous that the processing member has a cutting width, wherein the cutting width corresponds to at least a distance between outer sides of the outer sheets, in particular a distance from outer sides of the separating sheet, a separator sheet width.

Advantageously, the processing member along its longitudinal axis has a length, the cut length, which corresponds at least to the width of the release sheet, wherein the width of the release sheet is defined by the distance between the outer sides of the outer sheets.

Due to the design of the processing member on the master sheet a variable cutting width of the release sheet can be realized. The cutting length of the processing member is formed, for example, greater than the distance between the outer sides of the outer sheets. The Machining member is axially preferably so long that the cutting width projects axially slightly beyond the respective outer side of the two outer sheets, eg in the millimeter range. In order for a frictional contact of the outer leaves is avoided with the opposite walls of the gap formed by the separating blade in the separation operation in the mineral-containing hard material. Because the width of the joint advantageously corresponds to the axial length of the processing member, which is advantageously greater than the axial distance between the opposite outer sides of the outer sheets.

Furthermore, it is conceivable that one or more processing members, in particular all processing members, along their longitudinal axis have a length, in particular cut length, which is smaller than the cutting width of the release sheet, in particular smaller than the axial distance of the outer sides of the outer sheets. It is also conceivable that these processing elements are circumferentially positioned on the master sheet, in particular offset in the radial direction of the separator sheet, e.g. side by side, or seen in the axial direction of the release sheet are formed one behind the other on the master sheet, that the length of the processing members, in particular the cutting length of the processing members together form the cutting width of the release sheet in a revolution of the release sheet. Wherein the cutting width is at least equal to the width, the distance of the outer sides of the outer sheets, the release sheet. The cutting lengths of the processing elements can also be formed along one revolution in the axial direction overlapping the master blade.

Moreover, it is advantageous that the separating blade comprises a hub for mounting on the flange arrangement, wherein the inlet point of the separating blade is present for inlet of the coolant, for example in the region of the hub, wherein the inlet point is formed such that the coolant in the radial direction of the separating blade as seen in the separator sheet.

It is further proposed that the inlet point is located in a surface region which extends circumferentially and in the axial direction of the separating sheet between the outer sheet and the master sheet, in particular in a hub region.

In an advantageous variant, the inlet point extends in the radial direction of the separating sheet seen circumferentially, in particular full circumference, at the hub region of the release sheet.

The inlet point is in particular ring-shaped. Advantageously, the inlet point is formed as an open surface in the form of a cylinder jacket, wherein the coolant enters the inner volume of the release sheet in the radial direction through the cylinder jacket surface. The length of the cylinder jacket, for example, corresponds to a distance of one side of the main blade to an inner side of an outer blade. As a result, a particular radial flow direction is predetermined even when the cooling liquid enters the interior volume of the separating sheet.

It is also conceivable that the inlet point is located in a surface region which extends circumferentially and in the axial direction of the separating sheet between an outer side and / or an inner side of a first outer leaf and an outer side and / or an inner side of a second outer leaf.

It proves to be advantageous that the flow path between the master sheet and an outer sheet is present.

In principle, two or more axially spaced walls may be present in the inner volume of the release sheet. Thus, a plurality of hollow sub-volumes are formed in the inner volume of the release sheet, which are radially inwardly or outwardly connected by corresponding passages in the walls, in particular all partial volumes of the cooling liquid in the axial and / or radial direction can be flowed through. The inner structure is preferably designed such that a meandering flow path for the cooling liquid is provided in the radial direction. The flow paths are predetermined such that in the radial direction, each partial volume extends as far as possible in the separating blade.

Flow dead zones in the internal volume of the separating sheet are avoided by the internal structure, ie those regions in which the coolant is standing or flowing in an undirected manner, for example, or does not specifically flow to the outlet point. The heat transfer from the inner surfaces of the inner volume of the release sheet to the coolant is advantageously always on the flowing coolant, whereby a local overheating of the release sheet or heat esters are excluded. Heated coolant is always discharged in the flow direction from the inlet to the outlet. The amount of coolant discharged via the outlet point is replaced or replenished by the corresponding quantity of coolant supplied via the inlet point. The inlet temperature of the coolant supplied at the inlet location is selected such that it lies below the outlet temperature of the coolant discharged at the outlet location, in particular during operation of the separator sheet. The flow path is predetermined with the internal structure such that preferably at the regions of the separating sheet which heat up very strongly during operation or close to them lie the processing member, the coolant flows past on inside adjacent or nearby inner surfaces. Therefore, the flow path is advantageously designed so that the coolant flows radially outward to at least on inner surfaces of the release sheet, which are adjacent to the processing member.

As a result, a maximum possible and in particular adapted to the conditions of the release sheet heat dissipation is realized.

It is also advantageous that the flow path extends in the radial direction of the separating blade, from the inlet point to the outlet point.

Advantageously, the flow path extends only in the radial direction, thereby forming an axial flow path and thus e.g. Holes in the master sheet avoided. This increases the stability of the release sheet and advantageously reduces manufacturing costs of the base sheet.

It is further proposed that a spacer element is present between the master blade and an outer leaf. It proves to be advantageous that the outer leaves are spaced by the spacer element from the stem sheet arranged on the stem sheet, so that the separating sheet between the master sheet and the outer leaves has the inner volume. Advantageously, the mounting means comprise the spacer element.

With a spacer or a spacer, for example, a spacer, an exact positioning and spacing of the discs of the release sheet to each other can be made possible. With the distance formed between the respective sheets of the release sheet, e.g. provided the hollow internal volume and thus the flow path for the coolant. The spacer element is advantageously provided in the region around an axially continuous screw opening of the separating blade for attaching the separating blade to a flange arrangement. The preferably several spacer elements also cause a mechanical stabilization or stiffening of the release blade under mechanical stress by forces and moments. Preferably, a plurality of spacer elements distributed on a radius of the release sheet are present. It is also conceivable that the spacer element is formed like an annular disk and in the arranged state between the master sheet and outer leaf, the inner volume in the radial direction in particular completely completes and / or limited. The spacer element is exemplified as a flat ring, e.g. as a flat ring available.

It also proves to be advantageous that an intermediate sheet is present between the master sheet and an outer sheet.

The following are to be understood as master data sheet, outer sheet and intermediate sheet such sheets or disks which extend in the radial direction over the essential radius of the separating sheet or have a common central sheet axis. In particular spacer spacers, such as washers or spacers, are used as spacer spacers around screwing means of threaded fasteners which interconnect and firmly connect the blades, the spacer discs being present between said blades, not as stem, outer - And to understand interleaf. The spacer discs have a much smaller diameter than a stem, outer and intermediate blade.

The intermediate sheet has a comparatively smaller diameter than the advantageously equal in diameter stem and outer leaves. Advantageously, the intermediate sheet is arranged between the master sheet and the outer sheet such that the three sheets lie directly against each other in particular. As a result, the release sheet is additionally stabilized and reinforced.

The intermediate sheet advantageously comprises at least part of the internal structure of the separator sheet with a hollow interior volume. Preferably, the inner structure of the intermediate sheet is provided so as to define the flow path of the cooling liquid in the release sheet. The intermediate sheet is preferably present like a wheel. For example, the intermediate sheet has spokes which form the internal structure and between which the flow path exists.

It proves to be advantageous that the inlet point and the outlet point are formed in the radial direction of the separating sheet seen opposite and / or spaced from each other.

It is also advantageous that in the inner volume guide sections for specifying a flow direction of the coolant through the separator sheet are present.

The inner structure comprises, for example, the guide sections. Advantageously, the guide sections limit the flow path of the coolant. Wherein the flow path preferably has no guide portion seen in the axial direction of the release sheet.

The guide portions, such as flat or contoured inner surfaces, are Preferably designed so that all inner regions or inner surfaces of the release sheet can be reached by the cooling liquid and wetted or streamable. In particular, the guide sections cause the coolant to be directed in the radial direction from the inside to the outside. In addition, it is achieved with the flow path that the coolant always flows in the flow direction from the inlet point to the outlet point, that is, there is always an effective heat dissipation away from the separating sheet.

The invention also extends to a machine tool having a flange arrangement for a rotationally drivable release sheet, in particular a joint cutter with a release sheet, wherein a release sheet according to one of the above embodiments is present. The cooling liquid is preferably fed to the separating blade via an externally tightly closed or internal line in the flange arrangement, that is, without coolant being able to escape or escape to the outside in the area of the flange arrangement.

In particular, the machine tool is provided with a liquid cooling device, in particular with a water cooling device, e.g. as a powered, mobile construction machine for large construction site use with a continuously operating liquid cooling device. The liquid cooling device supplies the coolant to the coolant inlet point of the release sheet, for example through a corresponding liquid pumping device. In all modes of operation, the coolant or the coolant is supplied to the outside of the liquid-tight flange assembly and the separator sheet.

Description of an embodiment

Further features and advantages of the invention are explained in more detail with reference to a schematic embodiment according to the invention.

• 1 eine seitliche Ansicht, in axialer Richtung betrachtet, auf ein erfindungsgemäßes Trennblatt,
• 2 eine Ansicht auf einen Querschnitt in axialer Richtung durch das Trennblatt und
• 3 eine seitliche Ansicht, in axialer Richtung betrachtet auf eine weitere Ausführungsform des Trennblatts.

In detail shows:

• 1 a side view, viewed in the axial direction, on an inventive release sheet,
• 2 a view of a cross section in the axial direction through the separating blade and
• 3 a side view, viewed in the axial direction of a further embodiment of the release sheet.

An inventive release sheet 1 includes an internal log 2 and two outer sheets outside 3 . 4 , At the extent 5 of the stem leaf 2 is in particular circumferentially a processing member 6 eg arranged in the form of an annular diamond segment ( 1 and 2 ).

The master sheet 2 is eg by means of spacer elements 7 to 14 of the two outer leaves 3 . 4 spaced available. This is in each case between the master sheet 2 and one of the outer leaves 3 . 4 an internal volume 15 . 16 available. The internal volume 15 . 16 forms a flow path for a coolant, which the release sheet 1 for cooling the release sheet 1 can flow through. The internal volume 15 . 16 is thus disc-like. In particular, the internal volume 15 . 16 hollow and advantageously interrupted only by the spacer element 7 to 14. Advantageously, the spacer elements 8, 9, 12, 13 are disk-like, in particular disc-like. The spacer elements 7, 10, 11, 14 may be formed like a disk and / or ring segment. Advantageously, a plurality of spacer holding elements 7, 10 and 11, 14 along a circular path spaced from each other on the separator sheet 1 available.

The separator sheet 1 has a width b, which by a distance of an outer side 17 of the first outer sheet 3 and an outside 18 the second outdoor space 4 is formed. The processing organ 6 has a cut length 1 which advantageously a cutting width of the release sheet 1 equivalent. Preferably, the cutting width, in the embodiment shown, the cutting length 1 , greater than the width b of the release sheet 1 ,

The separator sheet 1 includes mounting means in the form of holes 19 to 24, which are in particular formed as through holes, by means of which the release blade 1 can be arranged on a flange assembly of a processing machine. For example, threaded rods of the flange arrangement pass through the separating blade 1 at the holes 19 to 24 such that the separator sheet 1 can be screwed to the flange.

The separator sheet 1 also has a hub 25 , where the separator sheet 1 at the hub 25 is configured attachable to a drive axle of the flange assembly.

In the area of the hub 25 are each cylinder jacket-shaped inlet points 26 . 27 between the master sheet 2 and the first outer leaf 3 or the second outer sheet 4 educated. The intake points 26 . 27 are present such that cooling liquid, starting from the drive axis, in the state mounted to the processing machine of the separating blade 1 , in the radial direction at the inlet points 26 . 27 in the interior volume 15 . 16 of the dividing sheet 1 can flow in. At the extent 5 of the release sheet 1 are outlet points 28 . 29 provided, from which the cooling liquid from the release sheet 1 can escape. In the exemplary embodiment, the cooling liquid first emerges in the radial direction from the internal volume 15 . 16 if necessary, due to the centrifugal forces acting on the cooling liquid to the processing device 6 , As a result, the processing organ 6 advantageously cooled. Subsequently, the cooling liquid occurs in the axial direction between the processing member 6 and the outer leaf 3 or the outer sheet 4 from the separator sheet 1 out.

In a further variant of the release sheet 1 it is also conceivable that inlet sites 45, 46 along a circumference of the release sheet 1 are present, so that coolant in the radial direction in the internal volume 15 . 16 of the dividing sheet 1 can flow in. It is also conceivable that in an alternative variant of the release sheet 1 Inlet sites 47, 48 are provided along a peripheral region of the separating blade, so that cooling liquid in the axial direction in the internal volume 15 . 16 of the dividing sheet 1 can flow in ( 2 ).

3 shows a further embodiment of a release sheet according to the invention 30 with a hub 31 , a circumferentially existing processing element 6 and mounting means in the form of holes 19 to 24. Wherein the holes 19 to 24 are provided to the separator sheet 30 to arrange on a flange assembly of a processing machine.

Furthermore, the separator sheet includes 30 Inlets 32 to 43 on an outer leaf 44 to which cooling liquid in the state mounted on the processing machine of the release sheet 30 in an inner volume of the release sheet 30 can flow in. Advantageously, the inlet locations are 32 to 43, in the radial direction of the release sheet 30 seen, further from the hub 31 spaced as the holes 19 to 24. This is in particular exclusively a cooling of a processing or engagement region of the release sheet 30 realized. Whereas a radially inner region, for the arrangement of the release sheet 30 to a drive of the processing machine, in particular the bores 19 to 24 or the hub 31 , advantageously to the internal volume of the release sheet 30 sealed exists. For example, the inner volume in a region between the inlet points 32 to 43 and the bores 19 to 24 is circumferentially on the separator sheet 30 to the radially inner region of the release sheet 30 sealed.

LIST OF REFERENCE NUMBERS

1

Interleave

2

trunk leaf

3, 4

outer sheet

5

scope

6

treatment member

7 - 14

Distance retaining element

15, 16

internal volume

17, 18

outside

19-24

drilling

25

hub

26, 27

port of entry

28, 29

outlet location

30

Interleave

31

hub

32 - 43

port of entry

44

outer sheet

45 - 48

port of entry

Claims (15)

Separating blade (1) for the material-removing machining of a mineral-containing material, comprising at least one to a central separating blade axis radially outward machining member (6) for material removal of the material, wherein the separating blade (1) is adapted to be set with a drivable flange in rotation wherein the separating sheet (1) for a processing operation, a coolant is fed, characterized in that the separating sheet (1) has a single master sheet (2) and two outer leaves (3, 4), wherein the master sheet (2) in the axial direction of Separation sheet (1) seen between the two outer leaves (3, 4) is present, wherein the processing member (6) is arranged only on the master sheet (2). Dividing sheet (1) after the previous Claim 1 characterized in that an inner structure is present in an inner volume (15, 16) of the separating sheet (1) enclosed by parts of the dividing sheet (1), the inner structure being provided between an inlet point (26, 27) for providing a flow path through which the coolant can flow. of the separating sheet (1) for the supply of the coolant and an outlet point (28, 29) of the separating sheet (1) for an outlet of the coolant, wherein the outlet point (28, 29) in the region of an outer periphery (5) of the separating sheet ( 1) is present. Dividing sheet (1) according to one of the preceding claims, characterized in that the processing member (6) has a cutting width, wherein the cutting width corresponds to at least one distance between outer sides (17, 18) of the outer sheets (3, 4). Dividing sheet (1) according to one of the preceding claims, characterized in that a plurality of processing members (6) spaced from each other are arranged circumferentially on the master sheet (2). Dividing sheet (1) according to one of the preceding claims, characterized in that the master sheet (2) and / or the outer sheet (3, 4) is formed as a full-surface, uninterrupted disk. Separating blade (1) according to one of the preceding claims, characterized in that the outer leaves (3, 4) by a spacer element from the stem sheet (2) spaced from the stem sheet (2) are arranged, so that the separating sheet (1) between the master sheet (2) and the outer leaves (3, 4) having the inner volume (15, 16). Dividing sheet (1) according to one of the preceding claims, characterized in that the separating sheet (1) and / or the outer sheet (3, 4) comprises a hub (25) for placement on the flange assembly. Separator blade (1) according to one of the preceding claims, characterized in that the flow path between the master blade (2) and an outer blade (3, 4) is present. Dividing sheet (1) according to one of the preceding claims, characterized in that the flow path extends from the inlet point (26, 27) to the outlet point (28, 29) in the radial direction of the separating sheet (1). Dividing sheet (1) according to one of the preceding claims, characterized in that the inlet point is present at a peripheral region of the dividing sheet. Separator blade (1) according to one of the preceding claims, characterized in that between the master blade (2) and an outer blade (3, 4) a spacer element (7-14) is present. Dividing sheet (1) according to one of the preceding claims, characterized in that an intermediate sheet is present between the master sheet (2) and an outer sheet (3, 4). Dividing sheet (1) according to one of the preceding claims, characterized in that the inlet point (26, 27) and the outlet point (28, 29) seen in the radial direction of the separating sheet (1) are formed opposite and / or spaced apart. Separator blade (1) according to one of the preceding claims, characterized in that in the inner volume (15, 16) guide portions for specifying a flow direction of the coolant through the separating blade (1) are present. Machine tool having a flange arrangement for a rotationally drivable dividing sheet (1), in particular a joint cutter with a dividing sheet (1) according to one of the preceding claims.

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