ES1074171U - Sanding head adaptable to an angular grinding machine (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Sanding head adaptable to an angle grinder, having a plate-shaped configuration, which is provided on its rear face with a termination (11) that integrates an internal threaded area (15) in which it bolts and is fixed to the shaft (21) of the grinding machine (2), characterized in that said head (1) presents on its rear face, facing the grinder, a discoidal extension (12), on the flat front side of which a sanding disk is fixed ( 13-17), which has a frustoconical active exterior surface, with an angle of conicity comprised between 3º and 5º, which in the center has an orifice (14) in which the threaded shaft (21) of the grinder when this head is mounted on it. (Machine-translation by Google Translate, not legally binding)

Description

Sanding head adaptable to a grinder angular.

Object of the invention

The present invention relates to a head for a grinder machine of the type comprising an engine electric that drives a threaded shaft on which it is mounted, or a radial disc that can be used to cut various materials (iron, stone, wood, etc.) and also as a sanding disc Enough. Any of these discs fits on the drive shaft and is immobilizes by means of an outer nut that is tightened with a wrench special. It is also possible to mount a spindle on said drive shaft conical plate mode, rubber or plastic, screwed by the base minor on said axis of the machine and presents at its major base, located towards the outside, a disk of sandpaper, to adapt the machine grinder as an angle sander.

Specifically, the head of the invention is refers to a head for sanding or polishing with a grinder machine conventional, which has a plate-shaped configuration, which it is provided by its rear face with a termination that integrates an internal threaded area in which it is screwed and fixed to the axis of the grinder machine, while on the front side presents the sanding disc

Background of the invention

Currently there are sandpaper plates that are mounted in a grinder formed by a single body in the form of plate, which is threaded into an existing termination on the shaft of the grinder. Another solution consists of a disk that fits into the machine shaft being fixed externally by means of a nut special that is pressed from the back or outside area.

Both individual sanding discs, such as sandpaper plates require the use of special keys or intermediate couplings, which in many cases do not remain centered correctly and therefore produce vibrations of the same. This sanding head is intended to solve all these problems.

Description of the invention

The present invention aims at a sander head adaptable to an orbital grinder, which presents its rear face a cylindrical termination, provided with two or more flat cuts that define parallel faces that constitute a medium of actuation by means of a conventional key applied on those flat faces. Inwardly it includes a nut, or defines a threaded cavity, in which it is screwed and fixed to the machine shaft grinder. On the front side, opposite to that through the which is fixed to the grinder, this dish has a surface discoid, substantially flat, on which a crown or sandpaper disc, or a disk formed by several sheets of sandpaper attached each other according to inclined diametral planes. Optionally They can adhere felt discs for polishing, as well as any type abrasive sheet or compact.

This disc presents in its active face, the opposite to the grinder, a certain taper on which the major base coincides with the front face facing the machine. In the middle from the sanding disc there is a hole in which the axis is located threading the grinder when mounted on it this head, chief, engine head.

Description of the figures

To complement the description that is being performing and in order to facilitate the understanding of characteristics of the invention, is attached herein descriptive a set of drawings in which, for illustrative purposes and not limiting, the following has been represented:

Figure 1 shows a sectional view transverse of the sanding head adapted in a grinder machine (2).

Figure 2 shows in a sectional view transversal a sanding head formed in this case by multiple sheets of sandpaper attached and inclined with respect to a plane diametral.

Preferred Embodiment of the Invention

As can be seen in the figures referenced the sanding head of the invention allows mounting discs of an abrasive material, preferably sandpaper, felt or any other compact abrasive material, consisting of a single element (13) as shown in figure 1, or constituted by several sheets (17) joined together according to diametral planes inclined, as seen in figure 2, to a grinder machine of Quick and easy way.

The head (1) presents a central emergency (11) on the face facing the grinder (2), which includes internally a threaded surface or an embedded nut (15) to through which this piece is immobilized on the threaded shaft (21) of machine. On its front face this head has a discoidal extension (12) in which a sanding disc adheres (13-17), made of abrasive material, sandpaper, similar to any conventional disk.

The sanding disc (13-17) it has an active truncated conical outer surface, with an angle of conicity between 3º and 5º, whose minor base constitutes the active front face. This form allows work on surfaces with more uniform sanding disc wear (13-17)), since this form is best suited for any surface without the tool vibrating with it use, as with conventional discs.

The anterior surface of this head (1) is formed by a single abrasive body (13), or formed by several plates (17) located inclined with respect to the plane that defines the operating face of the head, as shown in the figure 2.

The head (1) presents externally, in the termination (11) around the threaded area (15), at least one pair of cuts (16) that make up a polygonal surface on which optionally fits a key to tighten and loosen the head in the grinder

Once nature is sufficiently described of the invention, as well as a preferred embodiment, for the appropriate purposes that the materials, form, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential features of the invention claimed in continuation.

Claims (3)

1. Sanding head adaptable to an angle grinder, which has a plate-shaped configuration, which is provided by its rear face with a termination (11) that integrates an internal threaded area (15) in which it is screwed and fixed to the shaft (21) of the grinder machine (2), characterized in that said head (1) has a discoidal extension (12) on its rear face, facing the grinder, on whose front, flat face, a sanding disc is fixed adhered (13-17), which has an active truncated conical outer surface, with an angle of conicity between 3º and 5º, which in the center has a hole (14) in which the threaded shaft (21) of the grinder is located when this head is mounted on it. 2. Sanding head according to claim 1, characterized in that the active face of the sanding disc is constituted by an abrasive surface (13), or formed by sandpaper sheets (17) joined together and inclined with respect to the plane defining said sanding disc 3. Sanding head, according to the preceding claims, characterized in that the plate (1) externally presents, at the end (11) around the threaded area (15), at least one pair of cuts (16) forming a polygonal surface which optionally fits a key to tighten and loosen the head on the grinder.