RU40239U1 - END GRINDING CIRCLE (OPTIONS) - Google Patents

Abstract

Usage: abrasive industry, the design of the abrasive tool on a flexible basis.

Objective: expanding technological capabilities by processing embossed surfaces.

The inventive circle contains a sandpaper rolled up into a bobbin 1. According to the first embodiment, on a part of the width of the circle, the coils of the bobbin are fixed with an adhesive composition. There is a gap between the working end of the circle between the turns. In the second embodiment, the skin 1 is mounted from the non-working end on the cushioning tape 7 and docked with the non-working end with the processing tape 6.

Positive effect: ensuring ventilation between the layers of the grinding skins, preservation of the coolant, the exclusion of burns on the treated surface.

Description

The utility model relates to the abrasive industry, namely to the design of abrasive tools on a flexible basis.

Known petal circle containing the mandrel and attached to it with glue the petals from the grinding skin [1].

The disadvantage of this circle is the insufficient reliable attachment of the petals to the mandrel.

The closest in technical essence and the achieved effect to the proposed one is a face grinding wheel containing a working element in the form of petals from a grinding skin, fixed in the housing using an epoxy composition [2]. The loose ends of the petals are mounted in a ferrule in the form of a cylindrical spring, which acts as a guide whose axis is parallel to the axis of the device. The mechanism for extending the working element in the axial direction (departure of the petals) consists of a rod, a ring and a flexible rope.

The disadvantage of the closest analogue is the limited technological capabilities. The circle does not allow to process embossed end surfaces, such as the surfaces of trays, plates, where processing of inclined, and sometimes perpendicular to the end surface, sections is required.

The objective of the utility model is to expand technological capabilities by processing embossed surfaces.

The task is achieved in that the end grinding wheel containing the working element fixed in the body in the form of a grinding skin, according to the utility model according to the first embodiment, it is made in the form of a grinding skin rolled into a bobbin in a spiral with gaps between the turns, while the coil turns are fixed on a part of the width between each other with an adhesive composition, and according to the second variant, it is made in the form of a spiral-rolled sandpaper mounted from a non-working end on a cushioning tape, while the sandpaper is not Static preparation inoperative end face docked installed also on the release tape ribbon technology.

Such a design of the end grinding wheel will allow in the process to clearly take the shape of the surface being machined, which will ensure high-quality processing of embossed surfaces, that is, it will expand the technological capabilities of the wheel.

The bobbin can be installed by means of clamps on a mandrel made with a threaded hole in which a screw is installed with a conical tip interacting with the conical surface of the crackers. Rusks are mounted with the possibility of radial movement and are in contact with the inner surface of the bobbin.

The proposed wheel can be used both for grinding and polishing the machined surfaces. Between the working layers ventilation is provided, and also between the layers the coolant is well preserved, eliminating burns on the treated surface.

The proposed end grinding wheels are shown in FIGS. 1-4, where FIG. 1 shows a general view of the wheel according to the first embodiment, FIG. 2 shows a section AA of FIG. 1, and FIG. 3 shows a general view of the wheel according to the second embodiment.

The end face grinding wheel according to the first embodiment contains a spiral skin rolled up in a spiral into a bobbin 1. The turns of the bobbin are folded with a gap 2. On the part of the width (approximately 1/3 of the bobbin width), the coils are fixed together by adhesive composition 3. The bobbin from the grinding skin 1 is installed in the case 4 on the mandrel 5. The width of the grinding skins is determined by the necessary rigidity of the tool.

The end face grinding wheel according to the second embodiment contains a grinding sand 1, a work belt 6 and a cushion tape 7. In this case, one end of the work belt 6 rests against the washer 8, and the second end is joined to the end of the grinding sand 1. On the part of the width of the circle between the grinding sand 1 and the work tape 6 is located cushioning tape 7. From the inoperative end of the bobbin is fixed by a washer 8. A spring clip 9 is installed along the outer diameter of the bobbin.

The circle can be equipped with a mandrel 10, in the hole of which a screw 11 is installed with a conical tip in contact with the crackers 12, mounted on

the mandrel using the pins 13. The bobbin with the grinding sand 1 is fixed to the mandrel 10 by means of the clamps 14.

End grinding wheel works as follows. Turn on the machine drive (not shown in the drawing). The mandrel 5 begins to rotate and rotates the bobbin from the grinding skin 1 with the adhesive composition 3 installed in the housing 4. With its end, the sanding belt processes the surface of the parts, choosing the gaps 2 between the turns, acquiring the shape of the surface to be processed.

The circle made in the second embodiment works similarly. When the mandrel 5 rotates, the bobbin rotates from the grinding skin 1, the processing tape 6 and the cushioning tape 7, relying on the washer 8.

When supplying the circle with a mandrel 10, the screw 11 with its conical tip acts on the cracker 12, mounted on the mandrel with the help of pins 13, which bursts the bobbin in the radial direction. The outer diameter of the bobbin is held by a spring clip 9. The clips 14 prevent axial displacement of the bobbin.

In the process, ventilation is provided between the layers of the grinding skin, coolant is well preserved, excluding burns on the treated surface.

After wear of the wheel, the remaining sandpaper of small width can be used on turning and locksmith sections, for cleaning paint, rust, scale and other purposes.

In the manufacture of a new circle cushioning and technological tape can be used repeatedly.

The proposed end grinding wheel will find wide application in various workshops for grinding and polishing surfaces, in workshops for repairing automobile bodies for cleaning paint before straightening and cleaning the primer before painting.

Sources of information

1 GOST 22777-77. Products from a sandpaper, p. 2, fig. 2.

2 USSR author's certificate No. 1481048 “End face polishing wheel, MKI 4 V 24 D 13/04 of 05/23/89.

Claims (3)

1. End grinding wheel containing a working element fixed in the body in the form of a grinding skin, characterized in that it is made in the form of a sanding cloth rolled up into a bobbin with gaps between the turns, while the adhesive composition is fixed to each other on the width of the turn of the bobbin. 2. Face grinding wheel containing a working element fixed in the housing in the form of a grinding skin, characterized in that it is made in the form of a sanding cloth rolled up into a bobbin mounted from a non-working end on a cushioning tape, and docked with a non-working end with a processing tape also installed on the cushioning tape tape. 3. End grinding wheel according to claim 2, characterized in that the bobbin is mounted by means of clamps on a mandrel made with a threaded hole, in which a screw is installed with a conical tip interacting with the conical surface of crackers mounted with the possibility of radial movement and in contact with the inner surface of the bobbin .