DE10041660A1 - Grinding device for vibrating grinder has swing arm with thin grinding plate at vibrating end and with centre bearing to enable swivel movement out from swing plane - Google Patents

Abstract

The vibrating grinder (9) has a swing arm provided at its vibrating end with a thin grinding plate (4) for holding grinding paper. The grinding plate which is aligned in the swing plane has in the centre a bearing to allow the plate to swivel out from the swing plane. The swivel bearing is formed on the swing arm by a rubber elastic releasable push-fit connection. The end of the arm is round or angular and fits sufficiently secure in a corresponding socket in the centre of the grinding plate.

Description

It is known that ceramic edges on automotive glazing, which is built in Are difficult to access due to labor-intensive, manual grinding with Pretreat sandpaper in order to coat the Automotive glazing with transparent film better adhesion and better optical Achieve clarity (Sun-Gard Newsletter, number 15, March 2000). A there is currently no successful mechanical grinding process.

The invention specified in claim 1 is based on the problem that the well-known grinding attachments for hand grinders, for example cylindrical grinders, Orbital sander and belt sander, based on the arrangement of the grinding attachments unsuitable, small, difficult to access areas, such as glass edges Car windows, clean and even to process, or at Scale down of the known grinding machines a constant flatness of the Abrasives, as well as the exact positioning on the small to be processed Area, and therefore exact handling, is not guaranteed.

This problem is solved by the features listed in claim 1 is characterized in that a swing arm of an orbital sander on the swinging end with a thin aligned in the vibration plane Sanding plate is provided for receiving sandpaper, the sanding plate is provided approximately in the middle with a bearing which pivots the Grinding plate from the swing plane of the swing arm allows, solved. The advantages achieved by the invention are, in particular, that the Handling the grinder even in poorly accessible places Sanding plate remains on the surface to be sanded and that for the  Grinding process necessary pressure is evenly distributed. This ensures the necessary, uniform and localized cut, as well as a high Service life of the abrasives.

An advantageous embodiment of the invention is in claims 2 and 3 specified. The development according to claim 2 or 3 enables the sanding plate provided with sanding paper due to the rubber-elastic bearing each grinding process goes back to the original position, which is a simplified Allows beginning of a new grinding process. In addition, the sanding plate can be easily replaced at any time, for example for the grinding task choose the optimal size and geometry (for example from circular to oval) can.

An embodiment of the invention is shown in the drawing and is in following described in more detail.

Show it

Fig. 1 plan view from the direction of the swing axis

Fig. 2 left side view

The swing arm consists of a sheet ( 1 ) with a hole and a steel wire ( 2 ) which is attached to the sheet by means of a soldered seam ( 3 ) and which is bent at the free end by approximately 90 degrees to the swinging plane. The swing arm is attached to a commercially available orbital sander ( 9 ) using the existing hole.

The sanding plate consists of a shaped piece ( 4 ) made of steel, on the flat end of which a rubber plate ( 6 ) is glued, which is intended to hold self-adhesive sanding paper. The other side of the fitting ( 4 ) is designed as a sleeve, in the cavity of which two rubber rings ( 5 ) are glued. Now, when assembled, the sanding plate can swing on the swing arm in accordance with the deflection of the orbital sander ( 9 ) and continue to swing ( 7 ) through the rubber-elastic bearing from the swing plane of the swing arm, so that the sanding plate lies flat on the surface to be sanded during the sanding process to ensure.

Claims (3)

1. Grinding device on an orbital sander, characterized in that an oscillating arm of an orbital sander is provided at the oscillating end thereof with a thin abrasive plate oriented in the oscillating plane for receiving sanding paper, the abrasive plate being provided approximately in the center with a bearing which pivots the abrasive plate allows out of the swing plane of the swing arm. 2. Grinding device according to claim 1
Characterized in that the pivotable mounting of the sanding plate on the swing arm is realized by a rubber-elastic and detachable plug connection, the end piece of the swing arm can be round or angular and in a center of the sanding plate attached round or square sleeve with sufficient accuracy of fit, which is either itself is rubber-elastic or can be lined with rubber-elastic. 3. Grinding device according to claim 1
Characterized in that the pivotable mounting of the grinding plate on the swing arm is realized by a rubber-elastic and detachable plug connection, the end piece of the swing arm can be round or square and is covered with rubber-elastic and inserted into a round or square sleeve fastened approximately in the middle of the grinding plate with sufficient fit becomes.