WO2016026699A1

WO2016026699A1 - Colour-coded system of abrasive tools

Info

Publication number: WO2016026699A1
Application number: PCT/EP2015/068030
Authority: WO
Inventors: Thomas Wolf; Sebastian AHLHELM; Thomas ABBT
Original assignee: Robert Bosch Gmbh
Priority date: 2014-08-21
Filing date: 2015-08-05
Publication date: 2016-02-25
Also published as: DE102014216650A1

Abstract

The invention describes a system of at least two abrasive tools, wherein each abrasive tool is configured for the abrasive and/or polishing machining of surfaces and comprises at least one carrier element, an abrasive and at least one working side, and each abrasive tool has at least one identification colour for indicating abrasive tool. According to the invention, it is proposed that the identification colour of the first abrasive tool and the identification colour of the second abrasive tool are different and are coordinated with one another such that the identification colours follow a logical colour system in order to indicate the sanding property of the abrasive tools.

Description

description

title

COLOR-CODED SYSTEM OF GRINDING TOOLS

The invention relates to a system of at least two

Abrasive tools, each grinding tool being designed for grinding and / or polishing machining of surfaces and comprising at least one carrier element, an abrasive and at least one working side and each grinding tool having at least one identification color for characterizing a grinding property of the grinding tool.

State of the art

In DE 20 2004 004 436 Ul a nonwoven abrasive is disclosed, which is integrally formed as a fiber composite, with fibers having abrasive, wherein the fiber composite has abrasive grinding surfaces. The fiber composite has at least two differently abrasive grinding surfaces. The grinding surfaces can have a different color, whereby the grinding surfaces differ not only in an abrasive effect, but also in their visual appearance. The coloring thus makes it possible to characterize an abrasive surface without the need for further labeling of the abrasive surface structure.

Revelation of the Indo

He indung the task is based on simple measures to form a system of grinding tools, which has an improved identification of the grinding tools. The object is achieved by a system of at least two grinding tools, each grinding tool being designed for grinding and / or polishing machining of surfaces. Each grinding tool comprises at least one carrier element, an abrasive and at least one working side. Each grinding tool has at least one identification color for identifying a grinding property of the grinding tool. Here, the color code of the first grinding tool and the color code of the second

Abrasive tool different and coordinated so that the identification colors of a color logic to identify the grinding property of the grinding tools.

The invention allows a user to easily or intuitively

Select the grinding tool based on the color, allowing the user to choose the appropriate grinding tool with one for the machining operation

appropriate looping property quickly finds. In conventional

Identification elements in the form of printed labels and / or markings can be illegible or no longer exactly recognizable with increasing degree of wear or with increasing wear. This is prevented by the color code of the grinding tool according to the invention. In particular, eliminates the time-consuming search for a

Identification element in the form of a marker and / or a

Labeling. The user can intuitively on the basis of the marking element according to the invention or the color range of the marking element a suitable and appropriate selection of the next

Make machining process necessary grinding tool. In addition, even with used or worn abrasive tools, the user can assign the property of the grinding tool, in particular the abrasive, to the grinding tool on the basis of the marking element formed as a color. By "intuitive" it should be understood here that a selection of suitable grinding tools is based on a logical order of the colors of the grinding tools, so that the user of the color of the

Abrasive tool can take which Schleifenigenschaft the

Grinding tool is assigned. The color logic of the identification colors is obvious to the person skilled in the art. The color logic opens up to the expert without Further, in particular without the need for instructions or instructions for the interpretation or interpretation of the identification colors.

The grinding tools of the system according to the invention comprise at least one carrier element and at least one abrasive. Each grinding tool, in particular each abrasive, has a working side. The working side is thereby brought into contact during the machining process with a workpiece and moved relative to the surface of the workpiece to be machined. In this case, the abrasive material adjoins the carrier element, in particular on a side of the abrasive article facing away from the working side. On a holding side opposite the working side or fastening side of the grinding tool, the carrier element can be a holder element or a

Have fastening element for holding or attaching the grinding tool. The fastener or holder element can be used as

Thread be formed. The holding or fastening element can be designed as a hook and loop fastener. In this case, the grinding tool, in particular the carrier element of the grinding tool, can have at least one holding or fastening area which is used to hold or fasten the

Abrasive tool is formed. In particular, the fastening region or holding region may be formed as an area which is provided for grasping a hand of the user.

In this context, a "grinding agent" should be understood to mean a means which is suitable for grinding and / or polishing work of

Workpieces is formed. The abrasive may at least one

Having abrasive element, the abrasive and / or polishing

Machining of the workpiece is formed. In particular, it is also possible that the grinding elements are formed as abrasive grains, which in the

Abrasives are introduced. Alternatively or additionally, the abrasive may be formed of a foam. In particular, the foam may be porous and / or permeable to air. Preferably, the foam may be in the form of a closed cell, an open cell or a mixed cell

Foam be formed. Preferably, the foam can be flexible and in particular elastically deformable. Under a "Schlepfelemenf should be understood in this context, an element that has a deforming and / or erosive effect on the workpiece to be machined. A grinding element can be formed by an abrasive grain, which in particular is formed from a mineral and / or ceramic workpiece, such as, for example, diamond, corundum, silicon carbide

Boron nitride, etc. Here, the abrasive grain may have any, to a professional appear appropriate sense geometric design. Likewise, the grinding element may be formed at least as an edge, a corner or a taper of a surface structure, in particular a cellular surface structure of the abrasive, which causes an increased friction and temperature development on the workpiece to be machined, which has a deforming and / or erosive effect on or . in the workpiece to be machined. The surface structure may be formed as a microstructure and / or as a macrostructure. The microstructure may have a structure which is characterized by microscopically small unevenness of the surface height, for example a roughness or a porosity of the surface. The macrostructure may have a structure that is incorporated in the surface of the abrasive and may result in particularly advantageous grinding results. The macrostructure can be formed by slots, elevations or by curvatures, such as, for example, a dimpled, a slotted and / or a waffled surface. The subclaims give

appropriate training.

By "Trägerelemenf to be understood an element that connects to the abrasive. In particular, the carrier element of a

Plastic, a metal, a resin, a foam or a paper may be formed. Alternatively or additionally, the carrier element as

Adhesive for the at least one abrasive element or the abrasive be formed.

A "grinding property" is to be understood as meaning a property of the grinding agent which is designed to have a grinding effect

Property, in particular the loop property, is intended as

Property area can be formed, which divides the property into levels, classes or clusters of properties. The system of Abrasive tools have a plurality of grinding tools, which are subdivided into several stages or classes of properties to allow a stepwise machining of the workpiece. The property may characterize a roughness or a grinding performance of the abrasive. The property may be a dimension, in particular a grain size, of

Characterize abrasive elements of the abrasive. Alternatively or additionally, the properties may be useful to others as well

characterize appearing properties of a grinding tool. A grinding property is assigned to exactly one abrasive of a grinding tool. The grinding tool can use several abrasives

have different grinding properties.

A "marking color code" is to be understood as meaning a color, in particular a spectral color, for identifying grinding properties which corresponds to a wavelength range of visible light

Embodiment, the identification color as a hue, in particular to a reference identification color, be formed. The reference identification color can be a color that is characterized as the basic color code of the system of abrasive tools. The color code can have a darker or a lighter shade to the reference color and thus very easy to allow assignment of the grinding properties of the system of grinding tools. For example, the reference identifier color may be a blue one

Identification color be formed and corresponding shades be divided into light blue or dark blue color codes. In an alternative embodiment, the identification colors may be exactly in a certain wavelength range and differ, for example, by the colors red, orange, yellow, green, blue, indigo or violet.

The dependent claims indicate expedient developments.

Furthermore, it may be expedient that the system has at least three or more, in particular at least four, five or six, preferably at least seven, eight or nine, grinding tools. Likewise, systems may have more than nine abrasive tools. An embodiment with four, five or six is optimal because it allows the grinding tools can be classified in a simple way in identifying colors that can be advantageously distinguished from each other.

Preferably, the abrasive property of the abrasive is a degree of roughness, grain or grinding performance. This allows the user to

Abrasive property of the abrasive fast and reliable through the

Recognize color code.

It may be expedient that the carrier element has at least one holding side for holding or for fastening the grinding tool. Alternatively, the support member may have at least two holding sides, which are opposite to each other. The holding side may be formed as a holding area. The at least one holding side can have at least one form-locking element which is at least partially adapted to a hand of the operator and results in a positive connection between the hand and the operator. Furthermore, the holding side may be formed on a side opposite the working side. The

Holding side may have a fastening element, which for fixing the grinding tool with a machine tool, in particular a

Hand tool, is formed. The fastener may be formed as a screw, which is releasably connectable to a power tool. The fastener may as well

Attachment be formed, such as a

Velcro fastener, which is releasably connectable to the machine tool. In particular, a connection may be formed, such as a connection for a grinding wheel from the description of US 4,609,581, US 5,505,747 and US 5,254,194. The connection, which is formed in particular on the attachment side of the grinding wheel, will therefore not be discussed further. This allows a simple and convenient operation of the grinding tool by, for example, a hand of an operator or a receiving unit of a machine tool, in particular a

Hand tool.

The carrier element preferably has the characteristic color. Preferably, the abrasive on the color code. The color code may be formed on a surface of the support member and / or the abrasive. The color code can be used as a staining of the support element and / or the

Abrasive be formed. In particular, the color code characterizes the property, in particular the abrasive property, of the grinding tool and / or of the abrasive. This allows the user to recognize and select the appropriate for a next step grinding tool without significant expenditure of time. The color code allows an easy and intuitive assignment of the grinding property of the grinding tool. Furthermore, the color code is very easily visible and thus omitted, for example, the search for a number that could identify the property of the abrasive. In this context, the color code is to be understood as a coloration of at least one part or a region of the grinding tool, in particular the carrier element and / or the abrasive, of the grinding tool, which is designed for identification. The carrier element and / or the abrasive may be colored in the color code, so that even with wear or abrasion of a surface of the support member and / or the abrasive color code is recognizable. In addition to

Identification color, the support element and / or the abrasive may have a number or another one of those skilled appear useful information element, which allows in combination with the color code rapid identification of the grinding property of the grinding tool.

Preferably, the grinding tools are assigned to the grinding characteristics of the color logic with increasing wavelength of the light with increasing loop property. Alternatively, the grinding tools are associated with decreasing abrasive property characteristic colors of the color logic with increasing wavelength of the light. This allows an advantageous assignment of the identification colors to the respective grinding properties of the grinding tools. In this case, the looper properties of the respective grinding tools are arranged in a logical sequence of a color logic of mutually adjacent characteristic colors, in particular wavelength ranges of the light. This allows the sanding properties of the

Abrasive tools are clearly demarcated from each other. Furthermore, the abrasive can be optimally and intuitively assigned to the color code. In particular, the abrasive tools with changing loop characteristics are colored,

especially brightness levels, assigned to the color logic. This can Advantageously, based on brightness levels of a color code of the grinding tools, in particular the abrasive, are closed to an increasing or decreasing Abschleißschaft the grinding tools.

The grinding properties of the grinding wheels can be subdivided such that the grinding properties of the grinding wheels are arranged from coarse to fine or from fine to coarse. The grinding properties can be divided into coarse, medium, fine, superfine, ultrafine and microfine. The

Abrasive properties are e.g. divided into six classes or levels. Alternatively, the sweep properties may also be divided into less than six, such as three, four, or five, or more than six, such as seven, eight, nine, or n classes, where the number n is a natural integer. "Coarse" may be a first loop characteristic, in particular a first roughness, which in particular represents a first property range of the loop property. "Medium" may have a second loop property, in particular a second roughness grade "Fine" may be a third sweep property, in particular a third degree of roughness, which in particular represents a third property range of the sweep property. "Superfine" may be a fourth sweep property, in particular a fourth degree of roughness Specifically, it represents a fourth property range of the loop property. "Ultrafine" may be a fifth loop property, in particular a fifth degree of roughness, which in particular represents a fifth property range of the loop property. "Microfine" may be a sixth loop property, in particular a sixth roughness level, which in particular represents a sixth property range of the loop property. The

Abrasive properties or the property ranges, in particular the respective first to sixth property ranges, can be determined by the color code of the grinding tool, in particular the carrier element and / or the

Abrasive, easily distinguishable from each other. Each color property is assigned a color code. For example, six loop properties can have six color codes

be assigned. In this case, a first loop characteristic can be characterized by a first color code, such as a red color or a reddish color. The first color code is by a

Wavelength range of the light in a range of 700 to 630 nm, in particular in a frequency range of light in a range of 430 to 480 THz defined. A second loop characteristic may be characterized by a second color code, such as an orange color or an orange color. The second color code is by a

Wavelength range of the light in a range of 630 to 590 nm, in particular in a frequency range of light in a range of 480 to 510 THz defined. A third loop property can be replaced by a third one

Characteristic color, such as a yellow color or a yellow color, be characterized. The third color code is by a

Wavelength range of the light in a range of 590 to 560 nm, in particular in a frequency range of light in a range of 510 to 540 THz defined. A fourth loop property can be replaced by a fourth

Character color, such as a green color or a green hue, be characterized. The fourth color code is by a

Wavelength range of the light in a range of 560 to 490 nm, in particular in a frequency range of light in a range of 540 to 610 THz defined. A fifth loop feature can be replaced by a fifth

Characteristic color, such as a blue or indigo color or a blue or indigo hue, be characterized. The fifth color code is defined by a wavelength range of the light in a range from 490 to 450 nm, in particular in a frequency range of the light in a range from 610 to 670 THz. A sixth sweep characteristic may be characterized by a sixth characteristic color, such as a purple color or a violet hue. The sixth color code is by a

Wavelength range of the light in a range of 450 to 400 nm, in particular in a frequency range of light in a range of 670 to 750 THz defined. Thus, the grinding properties can be assigned to the color codes in a color logic, in particular in a logical order ascending or descending. This can be a versed in the color theory Users clearly recognize which grinding property of the grinding tools is necessary for the machining process.

Furthermore, the identification colors of the grinding tools with decreasing

Divide the wavelength range in a first order from a red, orange, yellow, green, blue / indigo to a purple color and

according to the first order of increasing or decreasing grinding property of the grinding tools. Furthermore, the identification colors with decreasing wavelength range in a second

Order should be divided into six, five, four or less identification colors corresponding to the second order in six, five, four or less

Abrasive properties of the grinding tools the rising or

associated with decreasing grinding properties. Preferably, a grinding tool has exactly one abrasive and one

A looping property that has the color code associated with it. Alternatively, the grinding tool may include two or more abrasives and two or more

Have looping properties. For example, the abrasive may be on the grinding tool opposite. Thus, an advantageous simple assignment of the grinding properties of the respective abrasive is possible.

Furthermore, an assignment of the grinding property of the abrasive to the color code can be made from a table. The table can be a list of abrasive properties of the abrasive with associated color codes.

In a development, the grinding tools of the system as

Grinding wheels, designed as abrasive papers, as abrasive blocks or as abrasive foams. Brief description of the drawings

Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawings, the description and the claims contain numerous features

Combination. The person skilled in the art expediently also the features individually consider and summarize to meaningful further combinations. This shows

FIG. 1 is a perspective view of a first embodiment of a system of abrasive tools;

Figure 2 is a perspective view of a second embodiment of a system of abrasive tools, Figure 3 is a perspective view of a third embodiment of a

Systems of abrasive tools and

Figure 4 is a perspective view of a fourth embodiment of a system of abrasive tools.

In the figures, the same components are provided with the same reference numerals. The following figures each relate to a grinding tool 1 of a system of grinding tools 1 for polishing and / or grinding machining of workpieces to be machined. The grinding tool 1 is preferably to be operated by the hand of an operator. In an alternative embodiment, however, the grinding tool 1 can be detachably connectable to a machine tool, in particular to a handheld power tool. The grinding tool 1 is suitable for processing,

in particular for grinding or polishing of surfaces, such as. A body in the automotive industry, surfaces in areas of

Shipping industry, the leisure industry or the furniture industry.

The grinding tools 1, the respective embodiments of systems of grinding tools 1, are constructed at least substantially analogously within the embodiments and differ at least in the

Essentially by the respective grinding properties and the respective color code. Thus, in the description of the drawings, respectively

Describe grinding tool of a system of grinding tools. The perspective view of the grinding tools la, lb, lc, ld of FIG. 1 shows a system of four parallelepiped sanding tools la, ld. The respective grinding tool 1a, ld has a carrier element 3a, 3b, 3c, 3d and two abrasives 5. The grinding tool la, ld is limited by six sides, in particular surfaces. At least two sides, in particular opposite each other, preferably at least in

Substantially parallel sides are designed as working sides 10, 11, 13, in particular as work surfaces. A first working page 10, 11 of

Abrasive tool la, ld in this case has a first abrasive 6. A second working side 10, 13 of the grinding tool la, ld in this case has a second abrasive 7. In this embodiment, the grinding tool 1a, ld comprises three layers 15, 17, 19. A first layer 15 is formed by the first abrasive 6 on the first working side 11. A second layer 17 is formed by the support element 3a, 3d. A third layer 19 is formed by the second abrasive 7 on the second working side 13 opposite the first working side 10, 11. Alternatively, the grinding tool la, ld but also only one abrasive 6 and a

Working side 10, 11, 13 have. The four other sides are transverse, in particular at least substantially orthogonal, to the two

Working pages 10, 11, 13 and restrict an extension of the

Grinding tool. The four further sides have, in particular at least substantially, no abrasive 5. The four other sides can be designed as side surfaces, which are for gripping the

Abrasive tool la, ld can be provided with a user's hand.

The abrasive 5 closes on the two working sides 10, 11, 13 of the

Grinding tool la, ld on. The first layer 15 of the first abrasive 6 extends along the first working side 10, 11. The third layer 19 of the second abrasive 7 extends along the second working side 13. The first layer 15 and / or third layer 19 have a first layer thickness 16 and / or a third layer thickness 20 which is less than 40%, in particular less than 30%, preferably less than 20%, preferably less than 10%, particularly preferably less than 5%, such as 3% or 2%, of a second Layer thickness 18 of the second layer 17 is. The support element 3a, 3d is also cuboidal. The support element 3a, 3d also has six sides. The support element 3a, 3d is by two abrasives 7 of the working sides 10, 11, 13 of the

Grinding tool la, ld limited. In particular, the two close

Abrasive 5 to the support element 3a, 3d at. The support element 3a, 3d is formed from a foam. The carrier element 3a, 3d has an identification color 21a, 21d, which is associated with the grinding property of the abrasive 5. In particular, the support element 3a, 3d with the

Identification color 21a, 21d be colored so that the color of one of the

Abrasive 5 exposed side is always visible. The abrasive 6 extends along the at least two working sides 10, 11, 13 of the grinding tool la, ld.

In Fig. 1 is also a system of four grinding tools la, ld to see. The four grinding tools la, lf differ essentially by the grinding properties, in particular a degree of roughness, of

Abrasive 5. The grinding properties of the grinding tools la, ld of the abrasive 5 is associated with a color code 21a, 21b, 21c, 21d. In this embodiment, the abrasive properties of the four abrasive tools 1 a, 1 d, in particular of the abrasives 5, are divided into coarse, medium, fine and super fine abrasive properties. The color code 21a, 21d is through the

Carrier element 3a, 3d, in particular the exposed, preferably not covered by the abrasives 5, visible sides, in particular side surfaces of the support element 3a, 3d, formed.

The identification color 21a, 21d of the first grinding tool la has a first color 23, such as a white or a red color, in particular a white or a red hue on. The identification color 21a, 21d of the second grinding tool 1a, ld in this case has a second color 25, such as an orange or a yellow color, in particular an orange or a yellow hue on. The identification color 21a, 21d of the third grinding tool 1a, ld in this case has a third color 27, such as a green or a blue color, in particular a green or a blue hue on. The color code 21a, 21d of the fourth Abrasive tool la, ld in this case has a fourth color 29, such as a purple color, in particular a purple hue on. The identification colors 21a, 21d and the colors follow a logical order of spectral colors of the light. The logical order of the spectral colors of the light follows in this embodiment a decreasing wavelength range or a rising frequency range of the light. This embodiment has a logical order, wherein the first grinding tool la has a coarse grinding property, which is associated with the first color 23. The second grinding tool 1b has a mean looping property associated with the second color 25. The third grinding tool 1 c has a fine grinding property associated with the third color 27. The fourth

Abrasive tool ld has a superfine abrasive property associated with the fourth color 29. In this logical order, the

Abrasive property from coarse to superfine and is assigned to the identification colors 21a, 21d whose wavelength ranges decrease. Thus, the respective grinding properties of a system of grinding tools 1a, 1d, with, for example, increasing or decreasing grinding properties, may be assigned a logical order of the identification colors 21a, 21d with a decreasing or increasing wavelength range of the light. Alternatively, the system may have five, six, seven, eight, or more abrasive tools la, ld that increase or decrease

Distinguish grinding properties and a logical order of spectral colors are assigned to each other.

In Fig. 2 is a second embodiment of a system of six

Grinding tools la, lb, lc, ld, le, lf can be seen from Fig. 1. The respective grinding tool la, lf is also formed cuboid here. The structure of the grinding tool 1a, lf is also at least substantially analogous to the grinding tool la, lf of FIG. 1 is formed. The

Abrasive tool la, lf is formed in this embodiment, however, as a sanding block. Alternatively, however, the Schleifkotz can also be formed cuboid. In this case, the sanding block can have corners or edges which are rounded. Similarly, the sanding block sides, in particular

Side surfaces, have, which are arranged transversely, in particular obliquely, to other sides, in particular side surfaces. It is possible for each other adjacent sides, in particular side surfaces, be arranged at an acute or an obtuse angle to each other. Side surfaces may be rectangular or trapezoidal. In contrast to FIG. 1, the abrasive 5 of FIG. 2 covers four sides of the grinding tool 1a, lf. The abrasive 5 thus surrounds the carrier element 3a, 3b, 3c, 3d, 3e, 3f to four sides, in particular working sides 10. The grinding tool 1a, lf the second embodiment thus has four working sides 10, in particular processing surfaces on.

Likewise, also in the second embodiment, as already described in FIG. 1, the identification color 21a, 21b, 21c, 21d, 21e, 21f on the carrier element 3a,

3f trained. The identification colors 21a, 21f are assigned to the grinding properties of the respective abrasive 5 of the grinding tool 1a, 1f. The second embodiment has a system of six grinding tools la, lf, in particular with six identification colors 21a, 21f. Like the system of FIG. 1, the grinding properties of the grinding tools are also in a logical order with respect to the identification colors 21a, 21f with decreasing or

associated with increasing wavelength ranges of light. Only the grinding tools are more divided, so that the grinding properties of the respective grinding tools of coarse, medium, fine, superfine, ultrafine to microfine are divided and with a corresponding subdivision of

Identification colors 21a, 21f of a first color 23 are red, a second color 25 orange, a third color 27 yellow, a fourth color 29 green, a fifth color 31 blue / indigo and a sixth color 33 purple assigned.

Fig. 3 shows a third embodiment of a system of five

Grinding tools la, lb, lc, ld, le according to Fig. 1 and Fig. 2. The respective grinding tool la, le is designed as abrasive papers. The

Grinding tool la, le is just trained. The grinding tool la, le is square. Alternatively, the grinding tool la, le but also polygonal, angular, in particular rectangular or round be formed. The grinding tool la, le has a working side 10, in particular working surface, and one of the working side 10 opposite

Attachment side up. The grinding tool la, le may have holes. The holes can be designed to accumulate abrasive dust from one to to promote processing surface. The holes can be arranged in a certain pattern to each other. The pattern may include spirals extending radially outward from a center of the grinding tool 1a, le. The spirals can be arranged in the form of a Fibonacci spiral. The abrasive 5 has a carrier element 3a, 3b, 3c, 3d, 3e, which may be formed as paper. The abrasive element 5, in particular in the form of a layer, adjoins the carrier element 3a, 3e. In this embodiment, the carrier element 3a, 3e, analogous to the first and second

Embodiment, an identification color 21a, 21b, 21c, 21d, 21e, which is formed as a color or spectral color. The third embodiment comprises a system of five grinding tools la, le, in particular with five identification colors 21a, 21e. The abrasives 5 of the grinding tools la, le,

in particular the grinding properties, are also like the system of Fig. 1 and Fig. 2 in a logical order to the color areas with

associated with decreasing or increasing wavelength range of the light. Alternatively or additionally, the abrasive 5 may have the identification color 21a, 21e.

In Fig. 4 is a fourth embodiment of a system of five

Grinding tools la, le to see. The respective grinding tool la, lb, lc, ld, le is circular. The grinding tool la, le in this case has a support element 3a, 3b, 3c, 3d, 3e, which is designed as a fastening element and for attachment to, for example, a machine tool, in particular a hand tool, may be formed. The grinding tool la, le has holes 35 which may be designed to promote accumulating sanding dust from a surface to be machined. In this case, a hole 35 is arranged in my center of the grinding tool. Further holes 35 are arranged radially distributed around the center in two groups. A first group is with a first radius to the

Center arranged. A second group is arranged with a second radius to the center. The holes 35 may be arranged in a certain pattern to each other, as already described in the third embodiment. In this embodiment, the abrasive 5 has a color code 21 a, 21 b, 21 c, 21 d, 21 e, which is formed as a color area or as a color. Alternatively, the carrier element 3a, 3e, analogous to the first and second embodiments, a color code 21a, 21e have. The fourth

Embodiment comprises a system of five grinding tools la, le, in particular with five color codes 21a, 21e, on. The abrasive means 5 of the grinding tools 1a, le, in particular the grinding properties, are also like the system of FIGS. 1 to 3 in a logical order to the identification colors 21a, 21e with decreasing or increasing

Wavelength range of the light assigned. Alternatively, the carrier element

5 have the color code 21a, 21e.

Claims

claims

1. System of at least two grinding tools (la, lf), each one

Abrasive tool (la, lf) is designed for grinding and / or polishing machining of surfaces and at least one support element (3a, lf), an abrasive (5) and at least one working side (11, 13) comprises and each

Grinding tool (la, lf) at least one identification color (21a, 21f) for

Characterized in that the identification color (21a, 21f) of the first grinding tool (la, lf) and the identification color (21a, 21f) of the second grinding tool (la, lf) are different and are coordinated with each other, that the identification colors (21a,

21f) of a color logic for characterizing the looping property of

Grinding tools (la, lf) follow.

2. System according to claim 1, characterized in that the system has at least three or more, in particular at least four, five or six, preferably at least seven, eight or nine, grinding tools (la, lf).

3. System according to any one of the preceding claims, characterized in that the grinding property of the abrasive means (5) has a degree of roughness or a

Grinding power is.

4. System according to one of the preceding claims, characterized in that the carrier element (3a, 3f) has at least one holding side for holding or for fastening the grinding tool (la, lf).

5. System according to one of the preceding claims, characterized in that the carrier element (3a, 3f) has the identification color (21a, 21f).

6. System according to any one of the preceding claims, characterized in that the abrasive means (5) has the identification color (21a, 21f).

7. System according to one of the preceding claims, characterized in that the grinding tools (la, lf) are assigned to the color logic with increasing wavelength of the light with increasing grating characteristic identification colors (21a, 21f).

System according to one of the preceding claims, characterized in that the grinding tools (la, lf) are associated with decreasing abrasive property characteristic colors (21a, 21f) of the color logic with increasing wavelength of the light.

System according to one of the preceding claims, characterized in that the grinding tools (la, lf) with changing loop property color tones, in particular brightness levels, the color logic are assigned.

10. System according to any one of the preceding claims, characterized in that the grinding tools is designed as grinding wheels, as abrasive papers, as abrasive blocks or as abrasive foams.