SU1230805A1 - Finishing tool - Google Patents

Description

The invention relates to metal working, in particular, tools for finishing materials with a free abrasive.

The purpose of the invention is to increase the productivity of the tool by ensuring an even distribution of the abrasive slurry on the working surface of the finishing disc.

FIG. 1 schematically shows the proposed device, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a section of YYD in FIG. 2

The tool contains a removable finishing disk 1 connected coaxially with the housing 2 mounted on the mandrel 3. The tool is fixed by a central screw 4 on the upper spindle 5 of the finishing machine.

Concentric grooves 6 and 7 of a rectangular profile are connected at both ends of the finishing disc, which are connected by uniformly spaced through axial holes 8. The depth of the grooves 7 at the working end is greater than the depth of the grooves at the end, adjacent to the housing, and is 2.5-5 mm In the grooves 6 of the non-working end of the finishing disc there are concentric reflectors 9, made in the form of protruding annular surfaces at the end of the housing, in contact with the finishing disc. In the housing there are through channels 10 connecting an annular concentric groove 11 made on its upper side with through axial holes 8 of the finishing disc. The channels 10 are evenly spaced at different angles, and their outlets at the end of the housing in contact with the trimming disc lie on concentric circles on the inner sides of the reflectors. The tubes 12 serve to feed the slurry into the instrument. For a more uniform distribution of the suspension, straight grooves 13 are made at the working end of the finishing disc.

In the process of finalizing the suspension with a given flow rate is fed through tubes 12 into an annular concentric groove 11 of the body and is uniformly supplied through channels 10 to all reflectors 9. On the reflectors, suspensions are evenly distributed around their perimeter due to centrifugal force and gravity and enters into the grooves 6. The reflectors also serve to direct the suspension into the corresponding groove and prevent the suspension from entering the gap between the casing and the adjusting disk. From the grooves b, the suspension passes through the through axial holes 8. The holes 8 sometimes come out at some distance from the outside

 grooves b, in this place the abrasive accumulates and under the action of centrifugal forces it is possible to get into the gap between the casing and the finishing disk, therefore the grooves 6 from above to the depth of 1 mm have a depth of 30 ° to the vertical. The angle of inclination and the depth of the undercuts are established from experience, with a smaller value, the abrasive gets into the gap, which later makes it difficult to change the finishing disc and shortens the service life of the housing.

5 The exit from the holes 8, the suspension falls on the outer surface of the groove 7. Under the action of gravity and centrifugal forces of the suspension, reaching the working surface of the finishing disc, is evenly distributed along it.

When the depth of the grooves is less than 2.5 mm, the slurry does not have time to evenly spread over the entire working surface of the finishing disc.

The limitation of the upper limit is due to technological considerations due to the difficulty of making narrow grooves of greater depth. In addition, a further increase in depth does not lead to a dramatic increase in productivity, although it prolongs the service life of the tool.

The proposed tooling tool improves processing performance and reduces slurry consumption.

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Editor A. Lezhnin Order 2308/17

VNIIPI USSR State Committee

for inventions and 01kryty

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Compiled by T. Petukhova Tehred I. VeresKorrektor L. Patay

Circulation 740 Subscription

Claims (1)

FINISHING TOOL, comprising a housing, on one end of which an annular concentric groove is made, and on the other end there is a finishing disk with through holes connected to the housing groove through the channels in it, characterized in that, in order to increase productivity by ensuring uniform distribution of abrasive suspensions along the working surface of the lapping disk; concentric annular grooves of a rectangular profile are made on two end surfaces of the latter, the depth of which is on the working th surface from above the depth of their side adjacent to the housing, wherein on the end face on the housing side, the mating with the lapping disc to the channel outlet area formed concentric reflectors disposed in said concentric annular grooves. bullshit SU 1230805 A1