DE7600085U1 - GRINDING TOOL - Google Patents

Description

G 76 OO 085.6

Ks 345a, b / 75 ¹⁹ ' ^Febr '

Applicant:

"Grinding tool"

The present innovation relates to a grinding tool for wet grinding of workpieces.

In body shops, workpieces, in particular components of car bodies or entire bodies, are sanded before painting or repainting, for which purpose waterproof sandpaper is used. During this process there is always the risk that the workpiece to be processed is not moistened enough and that this creates undesirable grinding marks «,

The present innovation is based on the task of creating a grinding tool for wet grinding of workpieces, which is extremely easy to manufacture and use and which guarantees perfect wet grinding.

G 76 OO 085.6 · · ... ._ _,, ", / '"'

Ks 345a, b / 75 j '■ ^ ² "■''' ¹⁹ ' ^Febr « ¹⁹⁷⁶ Z

The solution to this problem is characterized according to the innovation
by a porous, absorbent base body, on which at least in parts of the surface area granular abrasive material is attached. This ensures that water from the
absorbent, porous base body can pass between the individual grains of the abrasive material at any time in order to give the workpiece the necessary moisture.

iThe grains of the abrasive material are preferably by means of a waterproof adhesive in the outer layer of the base

'attached to the body, according to an advantageous development
the innovation consists of a sponge. Particularly advantageous;

is to cover the entire surface of the tool with abrasive materialj

ι to provide. This ensures that W & aoci. iü d ^ n basic body

can penetrate into or out of this. i

The base body is provided with an adhesive and then, while the adhesive is still plastic, the grains of the abrasive material applied to the sponge pretreated in this way.

The adhesive can be applied to the base body in any desired manner, for example by means of a brush
or expediently d-arch spraying on.

The abrasive material grains are advantageously on the with

Adhesive-pretreated base is applied by blowing, e.g. using compressed air. The transport medium, e.g. compressed air, can be preheated.

The accompanying drawing shows a grinding tool for wet grinding of workpieces according to the innovation.

The workpiece consists of a base body in the form of a porous, absorbent sponge 1. In the outer surface area of the sponge 1, that is to say on the surface itself and in the directly adjoining pores, is granular abrasive material 2 applied. The grinding material 2 consists in the usual way

j e.g. from medium to fine-grained rock made from corundum grains or!

similar minerals.

Any suitable one can be used to secure the abrasive grains Adhesive can be used, which can in particular consist of a waterproof synthetic resin.

The abrasive tool shown is in spite of the glued-on abrasive material grains able to absorb and release the desired amount of water. This water can be used during the work process get directly to the work site by pressing more or less forcefully during grinding. This creates an ideal wet sanding effect. Since the base body is made of porous,

G 76 OO 085.6 / ·

Ks 345a, b / 75 ' ⁴ " ^{19 February} " ¹⁹⁷⁶

absorbent, i.e. elastic material can do that Binders do not form a closed layer that is impermeable to water (as is the case with known cleaning tools, for example is the case where the abrasive grains on a waterproof Underlay are attached, which in turn carries a sponge-like body on the back).

The grinding tool is manufactured, for example, in that a sponge is provided with an adhesive, for example by spraying, and thereafter the abrasive grains, e.g. by means of

Compressed air to be blown onto the surface. The! Abrasive material grains more or less deep into the at the top;

surface pores of the sponge penetrate and through the j

'' Adhesive stick to the sponge. j

Protection claims

7600085 06/24/76

Claims (5)

19. Fab ,. 1.76 tf Protection claims | 1. Grinding tool for wet grinding of workpieces, characterized by a porous, absorbent one Base body (1) on which at least in parts of the surface area granular abrasive material (2) is attached is. 2. Grinding tool according to claim 1, characterized in that the grains of the grinding material (2) are attached to the outer layer of the base body by means of a waterproof adhesive. 3. Grinding tool according to claim 1, characterized in that the base body (1) is a Sponge is. 7600085 06/24/76 G 76 OO 085.6 '■, _1Ο _. _{αΊ (} Α Ks 345a, b / 75 " ⁶ " ¹⁹ * ^Febr * ¹⁹⁷⁶ Λ 4. The abrasive tool according to at least claim 1, ^{characterized:} in that the basic body (l) is provided on its outer layer with a sprayed adhesive, and then inflated with abrasive grains (2). 5. Grinding tool at least according to claims 1 and 2, characterized in that the grains (2) of the abrasive material from medium to fine-grained rock consist of corundum grains and the adhesive consist of a waterproof synthetic resin.