WO2012045399A1

WO2012045399A1 - Abrasive cutting-off device with dust extraction

Info

Publication number: WO2012045399A1
Application number: PCT/EP2011/004752
Authority: WO
Inventors: Alfred Rettenweber; Jennifer Mau
Original assignee: Wacker Neuson Produktion GmbH & Co. KG
Priority date: 2010-10-05
Filing date: 2011-09-22
Publication date: 2012-04-12
Also published as: DE102010047529A1

Abstract

An abrasive cutting-off device has a tool holding fixture (2) for rotatably holding a cutting wheel (3) in a receiving space. Also provided is a deflecting element (5), which is arranged in an area around the receiving space, wherein a width of the deflecting element (5) is substantially no wider than a thickness of the cutting wheel (3). Therefore, during operation of the abrasive cutting-off device, the deflecting element (5) can be let into a groove produced by the cutting wheel (3). The abrasive cutting-off device also has a suction extraction device (6), arranged in an area around the deflecting element (5). Particles produced during operation of the abrasive cutting-off device can be deflected by the deflecting element (5) in such a way that they are extracted by the suction extraction device (6).

Description

TRANSFER GRINDER WITH DUST EXTRACTION

The invention relates according to claim 1, a Trennschleifgerät.

Abrasive grinders can be used in construction, for example in road construction or rail construction, in order to achieve removal of material, for example when producing parting lines or when separating material sections. An abrasive cutter can be designed, for example, as a floor cutter. Cut-off grinders are used for various materials such as asphalt, concrete, metal or stone, such as granite or other natural and artificial stones.

The material removal is achieved in abrasive cutters by a rotating cutting disc (cut-off wheel), on the outer circumference cutting segments of a hard material such as diamond or boron nitride can be arranged.

Cutting the material during material removal can result in particles and dust, which are also referred to below as cutting dust. The cutting dust can lead to a strong contamination of the environment when using a cutting grinder. Is the resulting cutting dust not by a suitable measure such. As a sprinkling with water bound or collected, the work environment is heavily polluted by the dust. Hereby, an operator who inhales the cutting dust may be endangered. Furthermore, contamination may occur in a sprinkling with water through the water and the resulting in connection with the cutting dust sludge.

There are cut-off devices are known in which the cutting disc is partially enclosed by a protective hood, and in which a suction device is provided in the area of the protective hood. An interspersed with cutting dust air under the hood can be sucked in such devices.

For example, JP 10-076518 discloses a dust collecting mechanism for a portable sawing machine in which the circular rotatably mounted saw blade is covered at the rear by a fixed cover. The cover has a lateral dust outlet opening. In DE 196 30 022 AI a cutting grinder with a rotating driven cutting tool and a surrounding the cutting tool, two-piece protective hood is shown. A first protective hood section of the protective hood is mounted fixed to the device, while a second protective hood section is pivotable relative to the first protective hood section. By a blow stream emerging from a blow duct, guided into the kerf a dust and dirt jet is introduced into the protective hood and sucked from there. The blowing stream is branched off by a suction fan, which is arranged on the protective hood for sucking away the cutting dust. The disadvantage of this is that the vacuumed, dust-laden air can be reintroduced into the kerf with the blowing flow. Furthermore, a movable part of the protective hood can jam and thereby no longer reliably rest on a working surface, so that the blowing current is no longer reliably introduced into the kerf and dust and dirt can escape under the protective hood.

In the known arrangements for extracting the cutting dust in abrasive cutters, the cutting dust is insufficiently bound or collected and discharged. Thus, the cutting dust can escape from the protective hood wherever it is not in direct contact with the machined material. At these points, the cutting dust may enter an environment of the abrasive sharpener, soiling it, possibly endangering the operator.

The invention is therefore based on the object to provide a cutting-off device which prevents propagation of the cutting dust in the environment such that it can be removed by a suction device.

This object is achieved by a cutting-off device according to claim 1. Further developments of the invention can be found in the dependent claims.

An abrasive cutter has a tool holder for rotatably holding a cutting wheel in a receiving space. The tool holder may be suitable for receiving various types of cutting discs, such as synthetic resin-bonded cutting discs or diamond cutting discs. Furthermore, cutting disks of different spatial extent, such as different thickness (corresponding to a joint width of a gap produced by the cutting disk), ie different expansion in the direction of a rotation axis of the cutting disk, and / or different radial extent can be recorded. The receiving space is used to define a virtual recording volume for the cutting disc and can be designed as a space for the cutting disc with suitable spatial dimensions. For example, a circular cylindrical shape for receiving the rotating cutting disc be kept free by the receiving space, wherein the height of the circular cylindrical shape may be greater than a thickness of the male cutting disc and a radius of the circular cylindrical shape is greater than a radius of a male cutting disc. If the cutting disc is placed on the tool holder, it is enclosed by the (virtual) receiving space.

The tool holder may have a drive shaft, which transmits a drive torque of a rotary drive to the cutting wheel. In this way, the cutting disc can be set in rotation, the spatial extent can be described by a rotational envelope surface.

The rotating cutting disk can be brought into contact with a material to be machined in an operation of the abrasive cutter, resulting in a machining active area in a region of the rotary envelope surface. In this cutting-active region of the rotary envelope surface, which is also referred to below as the cutting location, it is possible for example to produce a joint in the material to be separated.

Furthermore, the cutting-off device has a deflecting element arranged in an environment of the receiving space as well as a suction device arranged in an environment of the deflecting element.

The deflecting element can be designed like a sword, for example with a smaller width than height. It may have a width which is substantially not wider than the thickness of the insertable into the tool holder cutting disc. For example, the width of the deflecting element can not exceed the thickness of the cutting disk by more than 1 mm. Furthermore, the deflecting element may have a width which is selected to be substantially the same width or narrower than the thickness of the cutting disk insertable into the tool holder. By means of this design, it can be achieved that the deflecting element can be inserted into the joint produced in the material to be separated.

A width of the cutting disc (insignificant, ie, for example, less than 1 mm) exceeding the width of the deflecting, for example, then makes sense be when the deflector is elastically deformable in its width, for example, compressible. By a corresponding compression of the deflecting can be achieved that the deflecting element is einlassbar in the parting line and this fills in its width. For example, the deflecting element may be made of a flexible material, for example of spring steel, elastic plastic or rubber. In this case, the width of the deflecting element can be adapted to the width of the gap which can be generated by the cut-off wheel. For this purpose, the deflecting element, for example, have a V-shaped cross-section in a plane parallel to a surface of the material to be separated, which allows flexible adaptation of the width of the deflecting element. In such a configuration, the deflecting element may have a width which is not substantially wider than the width of the cutting disc, which does not exceed the width of the cutting disc by more than 1 mm, for example. The deflecting element may in particular be designed and / or arranged such that the particles of the machined material which can be generated during the rotation of the cutting disk can be deflected and can be sucked out by the suction device. Thus, the deflecting element and the suction device can allow extraction of the cutting dust and prevent propagation of the cutting dust in the environment.

The deflecting element can be arranged downstream of the cutting location and / or the tool holder with respect to a direction of rotation of the cutting disk. The direction of rotation of the cutting disc corresponds to a direction of rotation determined by the tool holder, for example the direction of rotation of the drive shaft of the tool holder. An arrangement of the deflecting element downstream of the cutting location relative to the direction of rotation of the cutting disk can cause the cutting dust ejected and thrown out according to the direction of rotation to be braked by the deflecting element and deflected in such a way that it is largely or completely sucked out by the suction device can be. For example, can be largely or completely blocked by the deflecting the ejection area in the vicinity of the rotating cutting disc in which an ejection of cutting dust is to be expected. In particular, the generated joint can be obstructed by the deflection element in the direction of the ejection, so that escape of the cutting dust can be prevented. As a result, a large amount of the cutting dust resulting from the cutting can be braked, deflected and sucked off. Furthermore, the deflecting element can be arranged behind the cutting location with respect to a main working direction of the abrasive cutting device. Thus, the deflection behind the tool holder and thus come behind a mounted cutting disc with respect to the main working direction, so the main feed direction of the abrasive cutter. Thus, the diverting element can redirect ejection of cutting dust directed backwards in the main working direction, and the generated joint can be locked or closed by the diverting element. An escape of cutting dust from the open parting line can therefore be prevented. Furthermore, it is thus possible to select a direction of rotation of the cutting disc so that it supports a feed of the abrasive cutter in the direction of the main working direction.

In one embodiment, the deflecting element may have a groove-like end face or groove, which has at least one opening in the direction of the cutting disk or the cutting location, and which also extends in the direction of the suction device, for example in the form of a groove. Through the opening in the direction of the cutting location, the cutting dust produced during operation can be absorbed or transported or thrown into the channel. Due to the course of the channel-like end side in the direction of the suction device, it can be achieved that the picked-up cutting dust is deflected in the direction of the suction device, so that it can be sucked away from it.

In a further embodiment, the deflecting element can have a suction channel extending in the direction of the suction device, for example a suction nozzle or a suction tube, through which the cutting dust can be transported to the suction device. Through the suction pipe, a strong suction can be generated, through which, for example, can be sucked on the bottom of the joint produced particles lying. A use of a deflecting element, which has both a channel and a suction channel, for example, arranged behind the channel, is likewise possible. Thus, on the one hand a deflection and suction of the ejected cutting dust and on the other hand, a suction of particles on the bottom of the produced parting line can be made possible.

In addition to the suction channel and / or the suction tube, the suction device may have a suction fan which can be connected to the suction channel or the suction tube and serves as a suction drive. Furthermore, the deflecting element can be integrated into the suction device. For example, a one-piece design of deflection and parts of the suction device is possible. This can be designed according to fluid mechanics principles in such a way that it is possible to block the ejection region with suction initiation.

In one embodiment, the deflecting element is movable. This makes it possible to adapt the position of the deflecting element to the ejection region of the rotating cutting disk in such a way that the cutting dust thrown away by the rotating cutting disk can be completely deflected.

In such an embodiment, during the operation of the cutting-off device, the deflecting element can be let into the joint produced relative to the tool receptacle, whereby leakage of the cutting dust from the joint can be prevented. For this purpose, the deflecting element can be movable, for example, perpendicular to a rotational axis of the cutting disk in order to block the ejection area to a great extent. Alternatively or additionally, the deflecting element may be movable on a circular path about the axis of rotation of the cutting disk, for example in the direction of the cutting location. Alternatively or additionally, the deflecting element can be moved perpendicular to the main working direction of the abrasive cutter and thereby be admitted, for example, from above into the generated joint. As a result, leakage of the cutting dust from the joint can be prevented.

In a further embodiment, the deflecting element can be movable against the action of a spring device. Thus, it is possible to move the deflecting element by the spring force according to the directions of movement described above. For example, the deflecting element can be moved by the spring force in the direction of the bottom of the parting line such that the vertical cross section of the parting line is blocked largely independently of any inclination or position of the parting grinder in the main working direction. The spring force can be adjusted so that the deflecting slides away during a step of the abrasive cutter on possible bumps on the bottom of the joint produced, without hindering the movement of the abrasive cutter in the main working direction or to cause a significant opening of the obstruction of the parting line.

Instead of spring force, the deflecting element can also be moved by its own weight and / or by the operator, for example by means of a control lever in the direction of the bottom of the parting line. In one embodiment, the cutting-off device further comprises a separating disk protection which partially surrounds the cutting disk. This blade guard can be formed, for example, as part of a housing or separately from this. For example, the blade guard may surround the blade over a circumferential angle and have side walls adjacent the blade which are interconnected across the circumferential angle. The blade guard can enclose the rotating blade in the manner of a protective hood and thus prevent air exchange with introduction of the cutting dust in the ambient air in a region of the blade protection.

In this embodiment, the deflecting element can be held rigidly or relatively movably on the blade guard and deflect the cutting dust in such a way that the cutting dust is directed under the blade guard. Alternatively, in this embodiment, the deflecting element may also be held rigidly or relatively movably on another part of the abrasive cutting device, but not on the blade guard. For example, the deflecting element can be held on the housing of the cutting-off grinder. In one embodiment, the deflecting element is movable relative to the blade guard. It can therefore be moved relative to the blade guard so that a not covered by the blade protection ejection area of the rotating blade is largely blocked. For example, the deflecting element can be positioned such that a rearward opening of the joint produced in the main working direction of the cutting-off device is largely blocked by the deflecting element.

Furthermore, the suction device may be coupled to the blade guard. Thus, the blade guard may have an outlet to which a suction nozzle, for example, an external suction device may be connected. The suction device may be positioned near the deflection device in order to be able to suck the deflected cutting dust directly. But it is also possible to couple the suction device, in particular the suction fan, at another point of the blade guard to suck the dust-laden, collected under the blade protection air. Both aspects of ergonomics and fluid mechanics can be considered here.

In a further embodiment, the separating disk protection can be formed in two parts and have a first part and a second part. The second Part may be radially movable along the circumference of the rotary envelope surface relative to the first part or pivotable, which allows an adjustment of the positioning of the blade protection depending on a working position of the abrasive cutter and a surface of a material to be machined. By way of example, this makes it possible to achieve extensive enclosure of the cutting disk in different working positions of the abrasive cutter.

In one embodiment, the deflecting element and / or the suction device may be coupled to the second part of the blade guard. This can be positioned so that it rests in the region of the joint produced behind the cutting location on a surface of the material to be machined, i. For example, be by its weight or a spring force in the lowest possible position. The coupling of the deflecting element and / or the suction device with the second part of the blade protection then allows positioning of the deflecting element and / or the suction as deep as possible in the joint produced, for example, resting on the bottom of the joint. As a result, the resulting cutting dust can be effectively deflected and largely sucked completely. In a variant of this embodiment, the second part of the blade guard can be coupled by a spring means with the first part. Thus, the second part of the blade guard relative to the first part by a spring force of the spring means, for example, in the direction of the cutting location or in the direction of the joint produced be movable. As a result, the second part can be kept in the vicinity of the cutting location or the joint regardless of a working position or vertical inclination of the cutting-off device. If the deflecting element is coupled to the second part in such an embodiment, it can be positioned by the spring force of the spring device, for example on or in the joint, and block it.

The deflecting element can be designed such that it substantially fills and thus blocks a horizontal cross section and / or a vertical cross section of the parting line produced. In this case, the width of the deflecting element can not be selected substantially greater than the width of the joint produced during operation.

Alternatively, the deflecting element may also have flexible edge regions which, when guided through the parting line, slide along the joint edge. This can be done, for example, by means of rubbers arranged on one or both sides of the sword. Uppen or brush can be achieved. As already described, the deflecting element or the suction nozzle can alternatively or additionally be made of a flexible material, for example of spring steel, elastic plastic or rubber, and thus be adaptable to the width of a gap which can be generated by the cut-off wheel. Accordingly, it can also be achieved by a design of the deflecting element that the vertical cross section of the parting line can be substantially filled.

Since a cut-off device can be operated with different cutting discs of different thickness and / or different diameters, it is possible to make the deflection element interchangeable. In a corresponding embodiment, adapted to the dimensions of the cutting disc, a suitable deflecting element can be selected and coupled to the cutting-off device. The deflection element may have dimensions such that it substantially fills a parting line that can be generated by the used separating disk in its horizontal and / or vertical cross section, so that an undesired escape of the cutting dust from the parting line can be substantially prevented.

In one embodiment, the suction device may have a suction drive which can be operated separately from a drive of the cutting disk. Thus, regardless of whether the drive is realized by an electric or a gasoline engine, for example, an electric motor for the suction device can be used. Furthermore, it is possible to choose an adapted to the material to be machined and thus to the properties of the expected cutting dust suction device.

These and other features of the invention are explained in more detail below by means of examples and with the aid of the accompanying figures. Show it:

1 shows a cutting-off device with deflection, suction and one-piece blade protection, wherein the deflecting element is coupled by a spring means with the blade guard;

2 shows a cutting-off device with deflection element, suction device and one-piece blade protection, the suction device being arranged above the blade protection; 3 shows a cutting-off device with one-piece deflecting and suction device and one-piece blade protection;

4 shows a cutting-off device with one-piece deflecting and suction device and two-part blade protection;

5 shows a cutting-off device with deflecting element, suction device and two-part cutting-disk protection, wherein the deflecting element and the suction device are coupled to a second part of the cutting-disk protection;

6 shows a cutting-off device with deflection element, suction device and two-part cutting-disk protection, wherein the suction device is laterally coupled to the cutting-edge protection;

Fig. 7 front view of a deflecting element with introduction into a suction device;

Fig. 8 rear view of the deflecting element with introduction into a suction device;

9a shows a cutting-off device with raised deflecting element in one

Side view; FIG. 9b the cutting-off device from FIG. 9a in a perspective view; FIG.

FIG. 10a shows the cutting-off device from FIG. 9a with lowered deflecting element in a side view; FIG. and

10b, the cutting-off device of Fig. 10a in a perspective view.

The following figures show variants of abrasive cutters with elements that may partially match in design and function. For the same or similar elements, the same reference numerals will be used below. A description of such elements is given only once and not repeated in relation to other figures. Other combinations of arrangement and connection of the deflection, execution of the disc protection and Absaugort are possible.

1 shows a cutting-off device with a drive block 1, on which holding handles 1A and 1B are provided, which enable an operator to hold the cutting-off device in a main working position. Furthermore, the cutting-off device has a tool holder 2 with a drive shaft for transmitting a drive torque of a motor arranged in the drive block 1 to a cutting disk 3 positioned in the tool holder.

The cutting disk 3 is partially surrounded by a blade guard 4, wherein the blade guard 4 is arranged substantially on a side of the cutting disk 3 facing an operator workstation on the drive block 1 and leaves open a side of the cutting disk 3 facing away from the operator workstation.

Furthermore, a deflecting element 5 and a suction device 6 arranged in an environment of the deflecting element are provided. The deflecting element 5 has a concave curvature K directed toward the cutting disk or to a receiving space provided for the cutting disk.

The deflecting element 5 is elastically coupled by a spring device 7 with a spring 7 A with the blade guard 4. By a spring force of the spring 7A, the deflecting element 5 can be pushed out perpendicular to a rotational axis of the cutting disc 3 and on a substantially circular path along a circumference of the cutting disc 3 from the blade guard 4 in the direction of a cutting location O.

If a drive torque of the drive block 1 is transmitted to the cutting wheel 3 via the tool holder 2 in an operating state of the cutting-off device, the cutting wheel 3 can be set in rotation with the direction of rotation R. In a circumferential portion not enclosed by the blade guard 4, the rotating blade 3 can be brought into contact with a material M and this can be machined at the cutting location O of the rotational envelope surface of the blade 3. The cutting dust produced by cutting at the cutting location O can be ejected or thrown downstream by the rotation of the cutting disk with respect to the direction of rotation R. Cutting can occur when the cutter is moved by the operator in a main working direction A in the material M a parting line F with the vertical cross-section of the parting line F bounding bottom FB are generated.

Due to the elastic coupling of the deflecting element 5 with the separating disk contactor 4, the deflecting element 5 can be introduced into the parting line F and moved in the direction of the bottom FB of the parting line F in such a way that the parting line F is essentially blocked from the rear to the main working direction A. If the width of the deflecting element 5 is selected such that the horizontal cross section of the parting line F is also substantially blocked, the ejected cutting dust can be braked by the deflecting element 5 blocking the parting line F so that a rearward escape of the cutting dust from the parting line F is prevented can be. For this purpose, a width of the deflecting element 5 can not be selected to be substantially greater than a thickness of the cutting disk used. It is also conceivable that the deflection element 5 has a width of the parting line F only insignificant, for example, by less than 1 mm, exceeding width and by a flexible example, elastic design in the parting line F is einlassbar.

Furthermore, the cutting dust can be deflected in the direction of the suction device 6 and sucked by the suction device 6. This results in a main direction of movement of the cutting dust S, which allows effective extraction of the cutting dust and thus prevents propagation of the cutting dust in an environment of the abrasive cutter. In Fig. 2, the deflecting element 5 is fixedly connected to the blade guard 4. It can be aligned by a suitable orientation of the abrasive cutter or the blade guard 4 by the operator so that it can be inserted into the parting line F and thereby block the horizontal and vertical cross-section of the parting line substantially.

Furthermore, in this embodiment, the suction device 6 is not arranged directly adjacent to the deflection element 5, but in an upper, easily accessible to the operator area of the blade guard. In the operating state of the abrasive cutter results in a rotation of the blade 3 in the direction of rotation R by the directed removal and ejection of the particles of the material M in the direction of the deflecting 5, by the subsequent deflection of the particles by the deflecting. 5 and by a suction effect of the suction device 6 a main movement direction of the cutting dust S as shown in Fig. 2.

Fig. 3 shows a further embodiment of a cutting-off device, in which the deflecting element is integrated into the suction device. The suction device is formed in this embodiment by a suction channel, which is coupled to the one-piece blade protection and in the parting line F is einlassbar. The removal of the particles in the direction of rotation R results in the main movement direction S of the cutting dust shown in the figure.

The embodiment of a cutting-off device shown in FIG. 4 largely corresponds to that shown in FIG. In Fig. 4, however, the blade guard is formed in two parts with a first part 4A and a second part 4B. The second part 4B may be movable or pivotable relative to the first part 4A radially along a circumference of the cutting disk. In the embodiment, the suction device 6 is integrated with integrated deflecting element 5 with the second part 4B of the blade guard 4 and can therefore be moved by a movement of the second part 4B of the blade guard 4 on a circular path about the axis of rotation of the cutting disc in the direction of the cutting location o.

By means of the second part 4B, which is movable relative to the first part 4A of the separating disk protection 4, a further peripheral portion of the rotating cutting disk 3 can be surrounded, so that an uncontrolled discharge of particles and cutting dust into the environment, in particular in the direction of the operator, can be largely avoided. At the same time, the arrangement of the suction device 6 allows effective blocking of the parting line F and suction of the cutting dust.

FIG. 5 shows a further embodiment of a cut-off sharpener with a cut-off wheel guard 4 formed in two parts, in which, however, the deflecting element 5 is not integrated into the suction device 6. It is coupled to the second part 4B of the blade guard 4 and radially in the direction of the cutting location O in the parting line F by a movement of the second part 4B einlassbar. The embodiment shown in FIG. 6 essentially corresponds to the suction device 6 shown in FIG. 5, but attached laterally to the first part 4A of the protective disk guard 4 by the directed removal of the particles at the cutting location O, by deflecting the particles on the deflecting element 5 and by the suction effect of the suction device 6, the main movement direction S of the cutting dust can be as shown.

FIGS. 7 and 8 show in perspective an embodiment of the deflection element 5 with a device for positioning and mounting in a front and a rear view.

In the front view shown in FIG. 7, the deflecting element 5 can be seen as a narrow channel with supporting webs 5A, 5B, 5C and openings located therebetween. The channel runs in the direction of a connecting piece 8 to the suction device 6 (not shown). For example, a suction pipe can be connected to the connecting piece 8, in which a suction can be generated by a suction fan.

Because of its narrow design, the deflecting element 5 can be inserted into a parting line in such a way that its horizontal cross-section is substantially filled. The particles thrown by the rotating cutting disc can enter the channel through the openings between the supporting webs 5A, 5B and 5C, where they can be decelerated, deflected by the suction and transported through the connecting piece 8 to the suction device.

Furthermore, the component has a slider 9 which can be positioned within or outside the blade guard 4 such that movement of the slider 9 on a circular path along an inner or outer periphery of the blade guard is enabled.

In order to enable a movement of the component by the operator, an operating lever 10 is provided, which can be arranged outstanding when installing the component from the blade guard 4. A radial position of the component relative to the blade guard 4 is thus adjustable for the operator.

Fig. 8 shows the component shown in Fig. 7 in a rear view, in which the rearward configuration of the deflecting element 5 and in particular of the channel is shown. In the embodiment, the groove is formed by side surfaces 5D which adjoin one another at a rear seam 5E.

9a shows a further embodiment of a cutting-off device in a side view, wherein the cutting-off device has a component according to FIGS. 7 and 8, respectively. From the illustration, the arrangement of the deflection element 5, of the operating lever 10 and the connecting piece 8 can be seen. Furthermore, it is clear how the slider 9 can be arranged on an outer periphery of the blade guard 4 and a relative mobility of the deflecting element 5 allows the blade guard 4. In the illustration, the component is in a raised position, in which the deflecting element 5 protrudes only to a slight extent beyond the blade guard in the direction of the cutting location.

FIG. 9b shows the cutting-off device from FIG. 9a in a corresponding position in a perspective view.

FIG. 10a shows the cutting-off device from FIG. 9a again in a side view. In this figure, however, the deflecting element 5 is displaced relative to the blade guard 4 in a lowered position. In the illustrated position, the deflecting element 5 can be admitted, for example, into the partition F produced by the separating disk 3 up to its bottom FB and thus obstruct the parting line F at the rear to the main working direction A.

FIG. 10b shows the cutting-off device shown in FIG. 10a in a perspective view.

Claims

claims

1 . Cutting grinder, with:

a tool holder (2) for rotatably holding a cutting disc (3) in a receiving space;

a deflecting element (5) arranged in an environment of the receiving space, wherein a width of the deflecting element (5) is substantially not wider than a thickness of the separating disk (3); and

a suction device (6) arranged in an environment of the deflection element (5).

2. Abrasive cutting device according to claim 1, wherein the width of the deflecting element (5) is substantially narrower or the same width as a thickness of the cutting disc (3).

3. Abrasive cutting device according to one of the preceding claims, wherein the deflecting element (5) with respect to a direction of rotation (R) of the cutting disc (3) downstream of a resulting in operation cutting location (O) is arranged.

4. Abrasive cutting device according to one of the preceding claims, wherein the deflecting element (5) with respect to a main working direction (A) of the abrasive cutting device behind the cutting location (O) is arranged.

5. Abrasive cutting device according to one of the preceding claims, wherein the deflection element (5) has a groove-like end face, which has at least one opening in the direction of the cutting disc and in the direction of Absaugvorrich- device (6) extending.

6. abrasive cutting device according to one of the preceding claims, wherein the deflecting element (5) in the direction of the suction device (6) extending suction channel.

7. Abrasive cutting device according to one of the preceding claims, wherein the deflecting element (5) in the suction device (6) is integrated.

8. Abrasive cutting device according to one of the preceding claims, wherein the deflecting element (5) relative to the tool holder (2) and / or perpendicular to a

Rotary axis of the cutting disc (3) and / or on a circular path about the axis of rotation the cutting disc (3) and / or in the direction of the cutting location (O) and / or perpendicular to a main working direction (A) of the abrasive cutter is movable.

9. Abrasive cutting device according to one of the preceding claims, wherein the deflecting element (5) is movable against the action of a spring device (7).

10. Abrasive cutting device according to one of the preceding claims, wherein during the rotation of the cutting disc producible particles of the material to be cut by the deflecting element (5) are deflected such that they can be sucked through the suction device (6).

1 1. An abrasive cutting machine according to any one of the preceding claims, further comprising: a blade guard (4) partially surrounding the blade (3), the deflector (5) being retained on the blade guard (4).

12. Abrasive cutting device according to one of the preceding claims, wherein the deflecting element (5) relative to the blade guard (4) is movable.

13. Cutting machine according to one of the preceding claims, wherein the suction device (6) is coupled to the blade guard (4).

14. Abrasive cutting device according to one of the preceding claims, wherein

the blade guard (4) has a first part (4A) and a second part (4B),

the second part (4B) is movable radially along a circumference of the receiving space and / or vertically to the main working direction relative to the first part (4A), and wherein

the deflecting element (5) and / or the suction device (6) is coupled to the second part (4B) of the separating disk guard (4).

15. Cutting machine according to claim 13, wherein

the second part (4B) is coupled to the first part (4A) by spring means, and wherein

the second part (4B) is movable relative to the first part (4A) in the direction of the cutting location (O) by a spring force of the spring device.

16. Abrasive cutting device according to one of the preceding claims, wherein

during a rotation of the cutting disc (3) a parting line (F) in a material (M) can be generated; and where the deflection element (5) substantially fills a horizontal cross section and / or a vertical cross section of the parting line (F).

1 7. Abrasive cutter according to one of the preceding claims, wherein

the deflecting element (5) is elastically deformable in the direction of a width of the parting line (F), and

the deflecting element (5) can be introduced into the parting line (F) by elastic deformation when the parting line (F) is produced.

18. Cutting machine according to one of the preceding claims, wherein

the suction device (6) has a suction drive, and wherein

the suction drive can be operated separately from a drive of the cutting disc (3) and / or by the drive of the cutting disc (3).