DE8803247U1 - Sanding disc - Google Patents

Description

Dipl.- Ing. Dipl.- Oek. Niemannsweg JACK G. TÖNNIES 23OO MONTHLY Attorney and Patent Attorney Tel. 0431/84075 U J. 6. Tönnies, liennnsief 133, MO« liel 1 BiBk:H 8* 214 BLZ 210 900

To the

German Patent Office Two bridges tr. 12

Little Girls 2

Your reference Your letter No reference Kiel, Q New registration F 5013

Detlef Foullois
Dorfstrasse 12, 2301 Achterwehr

Sanding disc

The invention relates to a sanding disc for holding sandpaper or abrasive cloth, consisting of a circular carrier disc which is provided with a central hole and a polishing disc glued to the carrier disc, which receives the sandpaper or abrasive cloth on the surface facing away from the carrier disc and is provided with a central recess for receiving a bolt head.

For sanding, sanding discs are used in the industrial and craft sectors, which hold the sandpaper or sanding cloth. These sanding discs consist of a circular support disc to which a padding disc is glued, which in turn holds the sandpaper - for example, using a Velcro connection.

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- 2 or the abrasive cloth.

The upholstery disk is provided with a central recess that accommodates the head of a bolt that extends through a central recess with a small diameter through the carrier disk. The shaft of this bolt is then inserted into the chuck of the grinding machine.

The previously known grinding wheels can only be used with the corresponding grinding machine. In particular, grinding wheels that do not have a corresponding profile cannot be used with machines that can be operated in both directions and are provided with a corresponding mounting profile for this purpose.

The invention is based on the object of creating a grinding disc of the type mentioned at the beginning, which can be used with various machines, in particular with grinding machines that can be operated in both directions.

According to the invention, this object is achieved by an adapter disc which is removably mounted on the surface of the carrier disc facing away from the cushion disc and which is provided with eccentric recesses in the carrier disc corresponding to elevations pointing towards it and with at least one further elevation pointing away from the carrier disc and extending parallel to the tangent.

In particular, it is proposed that the at least one further elevation be designed as a pair of parallel webs made of&mdash;

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is formed.

It is further proposed that the carrier plate is provided with at least one further recess corresponding to the at least one elevation.

The invention is explained below with reference to a drawing.

Fig. 1 is a plan view of a correspondingly designed grinding disc; and

Fig. 2 is a sectional view along the line H-II of Fig. 1.

The sanding disc used to hold sandpaper or abrasive cloth (not shown) consists of a circular carrier plate 10 which is provided with a central hole 12. A padding disc 14 is glued to the carrier disc 10, which holds the sandpaper or abrasive cloth on the surface facing away from the carrier disc 10. This padding disc 14 is provided with a central recess 16 which is designed to hold a bolt head (not shown).

An adapter disk 18 is placed on the surface of the carrier disk 10 facing away from the cushion disk 14. This adapter disk 16 is provided with eccentrically arranged elevations 22, which correspond to corresponding eccentrically arranged recesses 20 in the carrier plate 10. On the surface facing away from the carrier disk 10, the adapter disk 18 is provided with webs 24 extending parallel to the tangent.

In the example shown, the carrier disk 10 is provided with recesses 26 corresponding to the webs 24.

When using the grinding disc with a grinding machine that can be operated in both directions, the adapter disk 18 is arranged so that the webs 24 point away from the carrier disk 10 and thus engage in the correspondingly designed receiving profile of the grinding machine. The webs 24 ensure that rotation is secure in both directions of rotation.

When using the grinding wheel with a "normal" grinding machine (or a conventional drill), the adapter disk 1Θ is placed the other way round on the carrier disk 10, with the elevations 24 designed as tangentially parallel webs engaging in the corresponding further recesses 26 of the carrier disk 10.

When using the grinding disc with a "normal" grinding machine, a flat carrier disk can be used instead of the adapter disk with ridges 24 suggested here. This other adapter disk intended for use with a normal grinding machine must also be provided with eccentric elevations 22 that correspond with recesses 20 in the carrier disk so that rotation is prevented between the carrier disk 10 and the adapter disk 18.

Claims (3)

- 1 claims 1. Sanding disc for holding sandpaper or abrasive fabric, consisting of a circular carrier plate (10) which is provided with a central hole (12) and a cushion disk (14) glued to the carrier disk (10), which receives the sandpaper or abrasive fabric on the surface facing away from the carrier disk (10) and is provided with a central recess (16) for receiving a bolt head, characterized by an adapter disk (18) which is removably placed on the surface of the carrier disk (10) facing away from the cushion disk (14), which adapter disk is provided with eccentric recesses (20) in the carrier disk (10) corresponding to elevations (22) pointing towards it and with at least one further elevation (2«0) pointing away from the carrier disk (10) and extending parallel to the tangent. 2. Grinding disc according to claim 1, characterized in that the at least one further elevation (24) is designed as a pair of parallel webs. 3. Grinding disc according to claim 1 and claim 2, characterized in that the carrier plate (10) is provided with at least one further recess (26) corresponding to the at least one elevation (24).